diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7ea8989..c3a62fd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,14 @@
+##
+
+### Tool Changes
+
+#### Analyzer
+
+* Support for `declarations-casts` has been removed and the `implicit-casts`
+  option now has the combined semantics of both options. This means that users
+  that disable `implicit-casts` might now see errors that were not previously
+  being reported.
+
 ## 2.2.0-dev.XX.0
 (Add new changes here, and they will be copied to the change section for the
   next dev version)
diff --git a/pkg/analysis_server/lib/lsp_protocol/protocol_generated.dart b/pkg/analysis_server/lib/lsp_protocol/protocol_generated.dart
index e1e4b90..200607c 100644
--- a/pkg/analysis_server/lib/lsp_protocol/protocol_generated.dart
+++ b/pkg/analysis_server/lib/lsp_protocol/protocol_generated.dart
@@ -6,9 +6,18 @@
 // To regenerate the file, use the script
 // "pkg/analysis_server/tool/lsp_spec/generate_all.dart".
 
+// ignore_for_file: deprecated_member_use
+// ignore_for_file: unnecessary_brace_in_string_interps
+
 import 'dart:core' hide deprecated;
 import 'dart:core' as core show deprecated;
+import 'dart:convert' show JsonEncoder;
 import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/protocol/protocol_internal.dart'
+    show listEqual, mapEqual;
+import 'package:analyzer/src/generated/utilities_general.dart';
+
+const jsonEncoder = const JsonEncoder.withIndent('    ');
 
 class ApplyWorkspaceEditParams implements ToJsonable {
   ApplyWorkspaceEditParams(this.label, this.edit) {
@@ -16,10 +25,10 @@
       throw 'edit is required but was not provided';
     }
   }
-  factory ApplyWorkspaceEditParams.fromJson(Map<String, dynamic> json) {
+  static ApplyWorkspaceEditParams fromJson(Map<String, dynamic> json) {
     final label = json['label'];
     final edit =
-        json['edit'] != null ? new WorkspaceEdit.fromJson(json['edit']) : null;
+        json['edit'] != null ? WorkspaceEdit.fromJson(json['edit']) : null;
     return new ApplyWorkspaceEditParams(label, edit);
   }
 
@@ -44,6 +53,25 @@
         obj.containsKey('edit') &&
         WorkspaceEdit.canParse(obj['edit']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ApplyWorkspaceEditParams) {
+      return label == other.label && edit == other.edit && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, label.hashCode);
+    hash = JenkinsSmiHash.combine(hash, edit.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ApplyWorkspaceEditResponse implements ToJsonable {
@@ -52,7 +80,7 @@
       throw 'applied is required but was not provided';
     }
   }
-  factory ApplyWorkspaceEditResponse.fromJson(Map<String, dynamic> json) {
+  static ApplyWorkspaceEditResponse fromJson(Map<String, dynamic> json) {
     final applied = json['applied'];
     return new ApplyWorkspaceEditResponse(applied);
   }
@@ -72,6 +100,24 @@
         obj.containsKey('applied') &&
         obj['applied'] is bool;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ApplyWorkspaceEditResponse) {
+      return applied == other.applied && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, applied.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class CancelParams implements ToJsonable {
@@ -80,12 +126,12 @@
       throw 'id is required but was not provided';
     }
   }
-  factory CancelParams.fromJson(Map<String, dynamic> json) {
+  static CancelParams fromJson(Map<String, dynamic> json) {
     final id = json['id'] is num
         ? new Either2<num, String>.t1(json['id'])
         : (json['id'] is String
             ? new Either2<num, String>.t2(json['id'])
-            : (throw '''${json['id']} was not one of (number, string)'''));
+            : (throw '''${json['id']} was not one of (num, String)'''));
     return new CancelParams(id);
   }
 
@@ -103,16 +149,34 @@
         obj.containsKey('id') &&
         (obj['id'] is num || obj['id'] is String);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CancelParams) {
+      return id == other.id && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, id.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ClientCapabilities implements ToJsonable {
   ClientCapabilities(this.workspace, this.textDocument, this.experimental);
-  factory ClientCapabilities.fromJson(Map<String, dynamic> json) {
+  static ClientCapabilities fromJson(Map<String, dynamic> json) {
     final workspace = json['workspace'] != null
-        ? new WorkspaceClientCapabilities.fromJson(json['workspace'])
+        ? WorkspaceClientCapabilities.fromJson(json['workspace'])
         : null;
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentClientCapabilities.fromJson(json['textDocument'])
+        ? TextDocumentClientCapabilities.fromJson(json['textDocument'])
         : null;
     final experimental = json['experimental'];
     return new ClientCapabilities(workspace, textDocument, experimental);
@@ -144,6 +208,29 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ClientCapabilities) {
+      return workspace == other.workspace &&
+          textDocument == other.textDocument &&
+          experimental == other.experimental &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, workspace.hashCode);
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, experimental.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// A code action represents a change that can be performed in code, e.g. to fix
@@ -157,17 +244,18 @@
       throw 'title is required but was not provided';
     }
   }
-  factory CodeAction.fromJson(Map<String, dynamic> json) {
+  static CodeAction fromJson(Map<String, dynamic> json) {
     final title = json['title'];
-    final kind = json['kind'];
+    final kind =
+        json['kind'] != null ? CodeActionKind.fromJson(json['kind']) : null;
     final diagnostics = json['diagnostics']
-        ?.map((item) => item != null ? new Diagnostic.fromJson(item) : null)
+        ?.map((item) => item != null ? Diagnostic.fromJson(item) : null)
         ?.cast<Diagnostic>()
         ?.toList();
     final edit =
-        json['edit'] != null ? new WorkspaceEdit.fromJson(json['edit']) : null;
+        json['edit'] != null ? WorkspaceEdit.fromJson(json['edit']) : null;
     final command =
-        json['command'] != null ? new Command.fromJson(json['command']) : null;
+        json['command'] != null ? Command.fromJson(json['command']) : null;
     return new CodeAction(title, kind, diagnostics, edit, command);
   }
 
@@ -184,7 +272,7 @@
   /// The kind of the code action.
   ///
   /// Used to filter code actions.
-  final String kind;
+  final CodeActionKind kind;
 
   /// A short, human-readable, title for this code action.
   final String title;
@@ -212,6 +300,34 @@
         obj.containsKey('title') &&
         obj['title'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CodeAction) {
+      return title == other.title &&
+          kind == other.kind &&
+          listEqual(diagnostics, other.diagnostics,
+              (Diagnostic a, Diagnostic b) => a == b) &&
+          edit == other.edit &&
+          command == other.command &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, title.hashCode);
+    hash = JenkinsSmiHash.combine(hash, kind.hashCode);
+    hash = JenkinsSmiHash.combine(hash, diagnostics.hashCode);
+    hash = JenkinsSmiHash.combine(hash, edit.hashCode);
+    hash = JenkinsSmiHash.combine(hash, command.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Contains additional diagnostic information about the context in which a code
@@ -222,12 +338,15 @@
       throw 'diagnostics is required but was not provided';
     }
   }
-  factory CodeActionContext.fromJson(Map<String, dynamic> json) {
+  static CodeActionContext fromJson(Map<String, dynamic> json) {
     final diagnostics = json['diagnostics']
-        ?.map((item) => item != null ? new Diagnostic.fromJson(item) : null)
+        ?.map((item) => item != null ? Diagnostic.fromJson(item) : null)
         ?.cast<Diagnostic>()
         ?.toList();
-    final only = json['only']?.map((item) => item)?.cast<String>()?.toList();
+    final only = json['only']
+        ?.map((item) => item != null ? CodeActionKind.fromJson(item) : null)
+        ?.cast<CodeActionKind>()
+        ?.toList();
     return new CodeActionContext(diagnostics, only);
   }
 
@@ -238,7 +357,7 @@
   ///
   /// Actions not of this kind are filtered out by the client before being
   /// shown. So servers can omit computing them.
-  final List<String> only;
+  final List<CodeActionKind> only;
 
   Map<String, dynamic> toJson() {
     Map<String, dynamic> __result = {};
@@ -257,15 +376,47 @@
             (obj['diagnostics'].length == 0 ||
                 obj['diagnostics'].every((item) => Diagnostic.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CodeActionContext) {
+      return listEqual(diagnostics, other.diagnostics,
+              (Diagnostic a, Diagnostic b) => a == b) &&
+          listEqual(only, other.only,
+              (CodeActionKind a, CodeActionKind b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, diagnostics.hashCode);
+    hash = JenkinsSmiHash.combine(hash, only.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// A set of predefined code action kinds
-abstract class CodeActionKind {
+class CodeActionKind {
+  const CodeActionKind(this._value);
+  const CodeActionKind.fromJson(this._value);
+
+  final String _value;
+
+  static bool canParse(Object obj) {
+    return obj is String;
+  }
+
   /// Base kind for quickfix actions: 'quickfix'
-  static const QuickFix = 'quickfix';
+  static const QuickFix = const CodeActionKind('quickfix');
 
   /// Base kind for refactoring actions: 'refactor'
-  static const Refactor = 'refactor';
+  static const Refactor = const CodeActionKind('refactor');
 
   /// Base kind for refactoring extraction actions: 'refactor.extract'
   ///
@@ -276,7 +427,7 @@
   /// - Extract variable
   /// - Extract interface from class
   /// - ...
-  static const RefactorExtract = 'refactor.extract';
+  static const RefactorExtract = const CodeActionKind('refactor.extract');
 
   /// Base kind for refactoring inline actions: 'refactor.inline'
   ///
@@ -286,7 +437,7 @@
   /// - Inline variable
   /// - Inline constant
   /// - ...
-  static const RefactorInline = 'refactor.inline';
+  static const RefactorInline = const CodeActionKind('refactor.inline');
 
   /// Base kind for refactoring rewrite actions: 'refactor.rewrite'
   ///
@@ -298,23 +449,36 @@
   /// - Make method static
   /// - Move method to base class
   /// - ...
-  static const RefactorRewrite = 'refactor.rewrite';
+  static const RefactorRewrite = const CodeActionKind('refactor.rewrite');
 
   /// Base kind for source actions: `source`
   ///
   /// Source code actions apply to the entire file.
-  static const Source = 'source';
+  static const Source = const CodeActionKind('source');
 
   /// Base kind for an organize imports source action: `source.organizeImports`
-  static const SourceOrganizeImports = 'source.organizeImports';
+  static const SourceOrganizeImports =
+      const CodeActionKind('source.organizeImports');
+
+  Object toJson() => _value;
+
+  @override
+  String toString() => _value.toString();
+
+  @override
+  get hashCode => _value.hashCode;
+
+  bool operator ==(o) => o is CodeActionKind && o._value == _value;
 }
 
 /// Code Action options.
 class CodeActionOptions implements ToJsonable {
   CodeActionOptions(this.codeActionKinds);
-  factory CodeActionOptions.fromJson(Map<String, dynamic> json) {
-    final codeActionKinds =
-        json['codeActionKinds']?.map((item) => item)?.cast<String>()?.toList();
+  static CodeActionOptions fromJson(Map<String, dynamic> json) {
+    final codeActionKinds = json['codeActionKinds']
+        ?.map((item) => item != null ? CodeActionKind.fromJson(item) : null)
+        ?.cast<CodeActionKind>()
+        ?.toList();
     return new CodeActionOptions(codeActionKinds);
   }
 
@@ -322,7 +486,7 @@
   ///
   /// The list of kinds may be generic, such as `CodeActionKind.Refactor`, or
   /// the server may list out every specific kind they provide.
-  final List<String> codeActionKinds;
+  final List<CodeActionKind> codeActionKinds;
 
   Map<String, dynamic> toJson() {
     Map<String, dynamic> __result = {};
@@ -335,6 +499,26 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CodeActionOptions) {
+      return listEqual(codeActionKinds, other.codeActionKinds,
+              (CodeActionKind a, CodeActionKind b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, codeActionKinds.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Params for the CodeActionRequest
@@ -350,14 +534,13 @@
       throw 'context is required but was not provided';
     }
   }
-  factory CodeActionParams.fromJson(Map<String, dynamic> json) {
+  static CodeActionParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
-    final range =
-        json['range'] != null ? new Range.fromJson(json['range']) : null;
+    final range = json['range'] != null ? Range.fromJson(json['range']) : null;
     final context = json['context'] != null
-        ? new CodeActionContext.fromJson(json['context'])
+        ? CodeActionContext.fromJson(json['context'])
         : null;
     return new CodeActionParams(textDocument, range, context);
   }
@@ -390,18 +573,43 @@
         obj.containsKey('context') &&
         CodeActionContext.canParse(obj['context']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CodeActionParams) {
+      return textDocument == other.textDocument &&
+          range == other.range &&
+          context == other.context &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, range.hashCode);
+    hash = JenkinsSmiHash.combine(hash, context.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class CodeActionRegistrationOptions
     implements TextDocumentRegistrationOptions, CodeActionOptions, ToJsonable {
   CodeActionRegistrationOptions(this.documentSelector, this.codeActionKinds);
-  factory CodeActionRegistrationOptions.fromJson(Map<String, dynamic> json) {
+  static CodeActionRegistrationOptions fromJson(Map<String, dynamic> json) {
     final documentSelector = json['documentSelector']
-        ?.map((item) => item != null ? new DocumentFilter.fromJson(item) : null)
+        ?.map((item) => item != null ? DocumentFilter.fromJson(item) : null)
         ?.cast<DocumentFilter>()
         ?.toList();
-    final codeActionKinds =
-        json['codeActionKinds']?.map((item) => item)?.cast<String>()?.toList();
+    final codeActionKinds = json['codeActionKinds']
+        ?.map((item) => item != null ? CodeActionKind.fromJson(item) : null)
+        ?.cast<CodeActionKind>()
+        ?.toList();
     return new CodeActionRegistrationOptions(documentSelector, codeActionKinds);
   }
 
@@ -409,7 +617,7 @@
   ///
   /// The list of kinds may be generic, such as `CodeActionKind.Refactor`, or
   /// the server may list out every specific kind they provide.
-  final List<String> codeActionKinds;
+  final List<CodeActionKind> codeActionKinds;
 
   /// A document selector to identify the scope of the registration. If set to
   /// null the document selector provided on the client side will be used.
@@ -432,6 +640,28 @@
                 obj['documentSelector']
                     .every((item) => DocumentFilter.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CodeActionRegistrationOptions) {
+      return documentSelector == other.documentSelector &&
+          listEqual(codeActionKinds, other.codeActionKinds,
+              (CodeActionKind a, CodeActionKind b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, documentSelector.hashCode);
+    hash = JenkinsSmiHash.combine(hash, codeActionKinds.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// A code lens represents a command that should be shown along with source
@@ -446,11 +676,10 @@
       throw 'range is required but was not provided';
     }
   }
-  factory CodeLens.fromJson(Map<String, dynamic> json) {
-    final range =
-        json['range'] != null ? new Range.fromJson(json['range']) : null;
+  static CodeLens fromJson(Map<String, dynamic> json) {
+    final range = json['range'] != null ? Range.fromJson(json['range']) : null;
     final command =
-        json['command'] != null ? new Command.fromJson(json['command']) : null;
+        json['command'] != null ? Command.fromJson(json['command']) : null;
     final data = json['data'];
     return new CodeLens(range, command, data);
   }
@@ -483,12 +712,35 @@
         obj.containsKey('range') &&
         Range.canParse(obj['range']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CodeLens) {
+      return range == other.range &&
+          command == other.command &&
+          data == other.data &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, range.hashCode);
+    hash = JenkinsSmiHash.combine(hash, command.hashCode);
+    hash = JenkinsSmiHash.combine(hash, data.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Code Lens options.
 class CodeLensOptions implements ToJsonable {
   CodeLensOptions(this.resolveProvider);
-  factory CodeLensOptions.fromJson(Map<String, dynamic> json) {
+  static CodeLensOptions fromJson(Map<String, dynamic> json) {
     final resolveProvider = json['resolveProvider'];
     return new CodeLensOptions(resolveProvider);
   }
@@ -507,6 +759,24 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CodeLensOptions) {
+      return resolveProvider == other.resolveProvider && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, resolveProvider.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class CodeLensParams implements ToJsonable {
@@ -515,9 +785,9 @@
       throw 'textDocument is required but was not provided';
     }
   }
-  factory CodeLensParams.fromJson(Map<String, dynamic> json) {
+  static CodeLensParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
     return new CodeLensParams(textDocument);
   }
@@ -537,15 +807,33 @@
         obj.containsKey('textDocument') &&
         TextDocumentIdentifier.canParse(obj['textDocument']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CodeLensParams) {
+      return textDocument == other.textDocument && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class CodeLensRegistrationOptions
     implements TextDocumentRegistrationOptions, ToJsonable {
   CodeLensRegistrationOptions(this.resolveProvider, this.documentSelector);
-  factory CodeLensRegistrationOptions.fromJson(Map<String, dynamic> json) {
+  static CodeLensRegistrationOptions fromJson(Map<String, dynamic> json) {
     final resolveProvider = json['resolveProvider'];
     final documentSelector = json['documentSelector']
-        ?.map((item) => item != null ? new DocumentFilter.fromJson(item) : null)
+        ?.map((item) => item != null ? DocumentFilter.fromJson(item) : null)
         ?.cast<DocumentFilter>()
         ?.toList();
     return new CodeLensRegistrationOptions(resolveProvider, documentSelector);
@@ -575,6 +863,27 @@
                 obj['documentSelector']
                     .every((item) => DocumentFilter.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CodeLensRegistrationOptions) {
+      return resolveProvider == other.resolveProvider &&
+          documentSelector == other.documentSelector &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, resolveProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentSelector.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Represents a color in RGBA space.
@@ -593,7 +902,7 @@
       throw 'alpha is required but was not provided';
     }
   }
-  factory Color.fromJson(Map<String, dynamic> json) {
+  static Color fromJson(Map<String, dynamic> json) {
     final red = json['red'];
     final green = json['green'];
     final blue = json['blue'];
@@ -601,9 +910,16 @@
     return new Color(red, green, blue, alpha);
   }
 
+  /// The alpha component of this color in the range [0-1].
   final num alpha;
+
+  /// The blue component of this color in the range [0-1].
   final num blue;
+
+  /// The green component of this color in the range [0-1].
   final num green;
+
+  /// The red component of this color in the range [0-1].
   final num red;
 
   Map<String, dynamic> toJson() {
@@ -626,6 +942,31 @@
         obj.containsKey('alpha') &&
         obj['alpha'] is num;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is Color) {
+      return red == other.red &&
+          green == other.green &&
+          blue == other.blue &&
+          alpha == other.alpha &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, red.hashCode);
+    hash = JenkinsSmiHash.combine(hash, green.hashCode);
+    hash = JenkinsSmiHash.combine(hash, blue.hashCode);
+    hash = JenkinsSmiHash.combine(hash, alpha.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ColorInformation implements ToJsonable {
@@ -637,11 +978,9 @@
       throw 'color is required but was not provided';
     }
   }
-  factory ColorInformation.fromJson(Map<String, dynamic> json) {
-    final range =
-        json['range'] != null ? new Range.fromJson(json['range']) : null;
-    final color =
-        json['color'] != null ? new Color.fromJson(json['color']) : null;
+  static ColorInformation fromJson(Map<String, dynamic> json) {
+    final range = json['range'] != null ? Range.fromJson(json['range']) : null;
+    final color = json['color'] != null ? Color.fromJson(json['color']) : null;
     return new ColorInformation(range, color);
   }
 
@@ -665,6 +1004,25 @@
         obj.containsKey('color') &&
         Color.canParse(obj['color']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ColorInformation) {
+      return range == other.range && color == other.color && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, range.hashCode);
+    hash = JenkinsSmiHash.combine(hash, color.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ColorPresentation implements ToJsonable {
@@ -673,13 +1031,12 @@
       throw 'label is required but was not provided';
     }
   }
-  factory ColorPresentation.fromJson(Map<String, dynamic> json) {
+  static ColorPresentation fromJson(Map<String, dynamic> json) {
     final label = json['label'];
-    final textEdit = json['textEdit'] != null
-        ? new TextEdit.fromJson(json['textEdit'])
-        : null;
+    final textEdit =
+        json['textEdit'] != null ? TextEdit.fromJson(json['textEdit']) : null;
     final additionalTextEdits = json['additionalTextEdits']
-        ?.map((item) => item != null ? new TextEdit.fromJson(item) : null)
+        ?.map((item) => item != null ? TextEdit.fromJson(item) : null)
         ?.cast<TextEdit>()
         ?.toList();
     return new ColorPresentation(label, textEdit, additionalTextEdits);
@@ -717,6 +1074,30 @@
         obj.containsKey('label') &&
         obj['label'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ColorPresentation) {
+      return label == other.label &&
+          textEdit == other.textEdit &&
+          listEqual(additionalTextEdits, other.additionalTextEdits,
+              (TextEdit a, TextEdit b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, label.hashCode);
+    hash = JenkinsSmiHash.combine(hash, textEdit.hashCode);
+    hash = JenkinsSmiHash.combine(hash, additionalTextEdits.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ColorPresentationParams implements ToJsonable {
@@ -731,14 +1112,12 @@
       throw 'range is required but was not provided';
     }
   }
-  factory ColorPresentationParams.fromJson(Map<String, dynamic> json) {
+  static ColorPresentationParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
-    final color =
-        json['color'] != null ? new Color.fromJson(json['color']) : null;
-    final range =
-        json['range'] != null ? new Range.fromJson(json['range']) : null;
+    final color = json['color'] != null ? Color.fromJson(json['color']) : null;
+    final range = json['range'] != null ? Range.fromJson(json['range']) : null;
     return new ColorPresentationParams(textDocument, color, range);
   }
 
@@ -769,10 +1148,37 @@
         obj.containsKey('range') &&
         Range.canParse(obj['range']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ColorPresentationParams) {
+      return textDocument == other.textDocument &&
+          color == other.color &&
+          range == other.range &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, color.hashCode);
+    hash = JenkinsSmiHash.combine(hash, range.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Color provider options.
 class ColorProviderOptions implements ToJsonable {
+  static ColorProviderOptions fromJson(Map<String, dynamic> json) {
+    return new ColorProviderOptions();
+  }
+
   Map<String, dynamic> toJson() {
     Map<String, dynamic> __result = {};
     return __result;
@@ -781,6 +1187,23 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ColorProviderOptions) {
+      return true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class Command implements ToJsonable {
@@ -792,7 +1215,7 @@
       throw 'command is required but was not provided';
     }
   }
-  factory Command.fromJson(Map<String, dynamic> json) {
+  static Command fromJson(Map<String, dynamic> json) {
     final title = json['title'];
     final command = json['command'];
     final arguments =
@@ -827,6 +1250,30 @@
         obj.containsKey('command') &&
         obj['command'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is Command) {
+      return title == other.title &&
+          command == other.command &&
+          listEqual(
+              arguments, other.arguments, (dynamic a, dynamic b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, title.hashCode);
+    hash = JenkinsSmiHash.combine(hash, command.hashCode);
+    hash = JenkinsSmiHash.combine(hash, arguments.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Contains additional information about the context in which a completion
@@ -837,9 +1284,9 @@
       throw 'triggerKind is required but was not provided';
     }
   }
-  factory CompletionContext.fromJson(Map<String, dynamic> json) {
+  static CompletionContext fromJson(Map<String, dynamic> json) {
     final triggerKind = json['triggerKind'] != null
-        ? new CompletionTriggerKind.fromJson(json['triggerKind'])
+        ? CompletionTriggerKind.fromJson(json['triggerKind'])
         : null;
     final triggerCharacter = json['triggerCharacter'];
     return new CompletionContext(triggerKind, triggerCharacter);
@@ -865,8 +1312,29 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic> &&
         obj.containsKey('triggerKind') &&
-        CompletionTriggerKind.canParse(obj['triggerKind']);
+        obj['triggerKind'] is num;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CompletionContext) {
+      return triggerKind == other.triggerKind &&
+          triggerCharacter == other.triggerCharacter &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, triggerKind.hashCode);
+    hash = JenkinsSmiHash.combine(hash, triggerCharacter.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class CompletionItem implements ToJsonable {
@@ -890,39 +1358,39 @@
       throw 'label is required but was not provided';
     }
   }
-  factory CompletionItem.fromJson(Map<String, dynamic> json) {
+  static CompletionItem fromJson(Map<String, dynamic> json) {
     final label = json['label'];
-    final kind = json['kind'] != null
-        ? new CompletionItemKind.fromJson(json['kind'])
-        : null;
+    final kind =
+        json['kind'] != null ? CompletionItemKind.fromJson(json['kind']) : null;
     final detail = json['detail'];
     final documentation = json['documentation'] is String
         ? new Either2<String, MarkupContent>.t1(json['documentation'])
         : (MarkupContent.canParse(json['documentation'])
             ? new Either2<String, MarkupContent>.t2(
                 json['documentation'] != null
-                    ? new MarkupContent.fromJson(json['documentation'])
+                    ? MarkupContent.fromJson(json['documentation'])
                     : null)
-            : (throw '''${json['documentation']} was not one of (string, MarkupContent)'''));
+            : (json['documentation'] == null
+                ? null
+                : (throw '''${json['documentation']} was not one of (String, MarkupContent)''')));
     final deprecated = json['deprecated'];
     final preselect = json['preselect'];
     final sortText = json['sortText'];
     final filterText = json['filterText'];
     final insertText = json['insertText'];
     final insertTextFormat = json['insertTextFormat'] != null
-        ? new InsertTextFormat.fromJson(json['insertTextFormat'])
+        ? InsertTextFormat.fromJson(json['insertTextFormat'])
         : null;
-    final textEdit = json['textEdit'] != null
-        ? new TextEdit.fromJson(json['textEdit'])
-        : null;
+    final textEdit =
+        json['textEdit'] != null ? TextEdit.fromJson(json['textEdit']) : null;
     final additionalTextEdits = json['additionalTextEdits']
-        ?.map((item) => item != null ? new TextEdit.fromJson(item) : null)
+        ?.map((item) => item != null ? TextEdit.fromJson(item) : null)
         ?.cast<TextEdit>()
         ?.toList();
     final commitCharacters =
         json['commitCharacters']?.map((item) => item)?.cast<String>()?.toList();
     final command =
-        json['command'] != null ? new Command.fromJson(json['command']) : null;
+        json['command'] != null ? Command.fromJson(json['command']) : null;
     final data = json['data'];
     return new CompletionItem(
         label,
@@ -1047,9 +1515,7 @@
     if (filterText != null) {
       __result['filterText'] = filterText;
     }
-    // ignore: deprecated_member_use
     if (insertText != null) {
-      // ignore: deprecated_member_use
       __result['insertText'] = insertText;
     }
     if (insertTextFormat != null) {
@@ -1078,6 +1544,55 @@
         obj.containsKey('label') &&
         obj['label'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CompletionItem) {
+      return label == other.label &&
+          kind == other.kind &&
+          detail == other.detail &&
+          documentation == other.documentation &&
+          deprecated == other.deprecated &&
+          preselect == other.preselect &&
+          sortText == other.sortText &&
+          filterText == other.filterText &&
+          insertText == other.insertText &&
+          insertTextFormat == other.insertTextFormat &&
+          textEdit == other.textEdit &&
+          listEqual(additionalTextEdits, other.additionalTextEdits,
+              (TextEdit a, TextEdit b) => a == b) &&
+          listEqual(commitCharacters, other.commitCharacters,
+              (String a, String b) => a == b) &&
+          command == other.command &&
+          data == other.data &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, label.hashCode);
+    hash = JenkinsSmiHash.combine(hash, kind.hashCode);
+    hash = JenkinsSmiHash.combine(hash, detail.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentation.hashCode);
+    hash = JenkinsSmiHash.combine(hash, deprecated.hashCode);
+    hash = JenkinsSmiHash.combine(hash, preselect.hashCode);
+    hash = JenkinsSmiHash.combine(hash, sortText.hashCode);
+    hash = JenkinsSmiHash.combine(hash, filterText.hashCode);
+    hash = JenkinsSmiHash.combine(hash, insertText.hashCode);
+    hash = JenkinsSmiHash.combine(hash, insertTextFormat.hashCode);
+    hash = JenkinsSmiHash.combine(hash, textEdit.hashCode);
+    hash = JenkinsSmiHash.combine(hash, additionalTextEdits.hashCode);
+    hash = JenkinsSmiHash.combine(hash, commitCharacters.hashCode);
+    hash = JenkinsSmiHash.combine(hash, command.hashCode);
+    hash = JenkinsSmiHash.combine(hash, data.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// The kind of a completion entry.
@@ -1085,7 +1600,7 @@
   const CompletionItemKind._(this._value);
   const CompletionItemKind.fromJson(this._value);
 
-  final Object _value;
+  final num _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
@@ -1167,10 +1682,10 @@
       throw 'items is required but was not provided';
     }
   }
-  factory CompletionList.fromJson(Map<String, dynamic> json) {
+  static CompletionList fromJson(Map<String, dynamic> json) {
     final isIncomplete = json['isIncomplete'];
     final items = json['items']
-        ?.map((item) => item != null ? new CompletionItem.fromJson(item) : null)
+        ?.map((item) => item != null ? CompletionItem.fromJson(item) : null)
         ?.cast<CompletionItem>()
         ?.toList();
     return new CompletionList(isIncomplete, items);
@@ -1200,12 +1715,34 @@
             (obj['items'].length == 0 ||
                 obj['items'].every((item) => CompletionItem.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CompletionList) {
+      return isIncomplete == other.isIncomplete &&
+          listEqual(items, other.items,
+              (CompletionItem a, CompletionItem b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, isIncomplete.hashCode);
+    hash = JenkinsSmiHash.combine(hash, items.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Completion options.
 class CompletionOptions implements ToJsonable {
   CompletionOptions(this.resolveProvider, this.triggerCharacters);
-  factory CompletionOptions.fromJson(Map<String, dynamic> json) {
+  static CompletionOptions fromJson(Map<String, dynamic> json) {
     final resolveProvider = json['resolveProvider'];
     final triggerCharacters = json['triggerCharacters']
         ?.map((item) => item)
@@ -1235,6 +1772,28 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CompletionOptions) {
+      return resolveProvider == other.resolveProvider &&
+          listEqual(triggerCharacters, other.triggerCharacters,
+              (String a, String b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, resolveProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, triggerCharacters.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class CompletionParams implements TextDocumentPositionParams, ToJsonable {
@@ -1246,22 +1805,21 @@
       throw 'position is required but was not provided';
     }
   }
-  factory CompletionParams.fromJson(Map<String, dynamic> json) {
+  static CompletionParams fromJson(Map<String, dynamic> json) {
     final context = json['context'] != null
-        ? new CompletionContext.fromJson(json['context'])
+        ? CompletionContext.fromJson(json['context'])
         : null;
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
-    final position = json['position'] != null
-        ? new Position.fromJson(json['position'])
-        : null;
+    final position =
+        json['position'] != null ? Position.fromJson(json['position']) : null;
     return new CompletionParams(context, textDocument, position);
   }
 
-  /// The completion context. This is only available if the client specifies
-  /// to send this using
-  /// `ClientCapabilities.textDocument.completion.contextSupport === true`
+  /// The completion context. This is only available if the client specifies to
+  /// send this using `ClientCapabilities.textDocument.completion.contextSupport
+  /// === true`
   final CompletionContext context;
 
   /// The position inside the text document.
@@ -1289,20 +1847,43 @@
         obj.containsKey('position') &&
         Position.canParse(obj['position']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CompletionParams) {
+      return context == other.context &&
+          textDocument == other.textDocument &&
+          position == other.position &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, context.hashCode);
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, position.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class CompletionRegistrationOptions
     implements TextDocumentRegistrationOptions, ToJsonable {
   CompletionRegistrationOptions(
       this.triggerCharacters, this.resolveProvider, this.documentSelector);
-  factory CompletionRegistrationOptions.fromJson(Map<String, dynamic> json) {
+  static CompletionRegistrationOptions fromJson(Map<String, dynamic> json) {
     final triggerCharacters = json['triggerCharacters']
         ?.map((item) => item)
         ?.cast<String>()
         ?.toList();
     final resolveProvider = json['resolveProvider'];
     final documentSelector = json['documentSelector']
-        ?.map((item) => item != null ? new DocumentFilter.fromJson(item) : null)
+        ?.map((item) => item != null ? DocumentFilter.fromJson(item) : null)
         ?.cast<DocumentFilter>()
         ?.toList();
     return new CompletionRegistrationOptions(
@@ -1318,11 +1899,11 @@
   final bool resolveProvider;
 
   /// Most tools trigger completion request automatically without explicitly
-  /// requesting it using a keyboard shortcut (e.g. Ctrl+Space). Typically
-  /// they do so when the user starts to type an identifier. For example if
-  /// the user types `c` in a JavaScript file code complete will automatically
-  /// pop up present `console` besides others as a completion item. Characters
-  /// that make up identifiers don't need to be listed here.
+  /// requesting it using a keyboard shortcut (e.g. Ctrl+Space). Typically they
+  /// do so when the user starts to type an identifier. For example if the user
+  /// types `c` in a JavaScript file code complete will automatically pop up
+  /// present `console` besides others as a completion item. Characters that
+  /// make up identifiers don't need to be listed here.
   ///
   /// If code complete should automatically be trigger on characters not being
   /// valid inside an identifier (for example `.` in JavaScript) list them in
@@ -1349,6 +1930,30 @@
                 obj['documentSelector']
                     .every((item) => DocumentFilter.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CompletionRegistrationOptions) {
+      return listEqual(triggerCharacters, other.triggerCharacters,
+              (String a, String b) => a == b) &&
+          resolveProvider == other.resolveProvider &&
+          documentSelector == other.documentSelector &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, triggerCharacters.hashCode);
+    hash = JenkinsSmiHash.combine(hash, resolveProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentSelector.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// How a completion was triggered
@@ -1356,7 +1961,7 @@
   const CompletionTriggerKind._(this._value);
   const CompletionTriggerKind.fromJson(this._value);
 
-  final Object _value;
+  final num _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
@@ -1376,8 +1981,7 @@
   /// `triggerCharacters` properties of the `CompletionRegistrationOptions`.
   static const TriggerCharacter = const CompletionTriggerKind._(2);
 
-  /// Completion was re-triggered as the current completion list is
-  /// incomplete.
+  /// Completion was re-triggered as the current completion list is incomplete.
   static const TriggerForIncompleteCompletions =
       const CompletionTriggerKind._(3);
 
@@ -1394,7 +1998,7 @@
 
 class ConfigurationItem implements ToJsonable {
   ConfigurationItem(this.scopeUri, this.section);
-  factory ConfigurationItem.fromJson(Map<String, dynamic> json) {
+  static ConfigurationItem fromJson(Map<String, dynamic> json) {
     final scopeUri = json['scopeUri'];
     final section = json['section'];
     return new ConfigurationItem(scopeUri, section);
@@ -1420,6 +2024,25 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ConfigurationItem) {
+      return scopeUri == other.scopeUri && section == other.section && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, scopeUri.hashCode);
+    hash = JenkinsSmiHash.combine(hash, section.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ConfigurationParams implements ToJsonable {
@@ -1428,10 +2051,9 @@
       throw 'items is required but was not provided';
     }
   }
-  factory ConfigurationParams.fromJson(Map<String, dynamic> json) {
+  static ConfigurationParams fromJson(Map<String, dynamic> json) {
     final items = json['items']
-        ?.map((item) =>
-            item != null ? new ConfigurationItem.fromJson(item) : null)
+        ?.map((item) => item != null ? ConfigurationItem.fromJson(item) : null)
         ?.cast<ConfigurationItem>()
         ?.toList();
     return new ConfigurationParams(items);
@@ -1453,23 +2075,50 @@
                 obj['items']
                     .every((item) => ConfigurationItem.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ConfigurationParams) {
+      return listEqual(items, other.items,
+              (ConfigurationItem a, ConfigurationItem b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, items.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Create file operation
-class CreateFile implements FileOperation, ToJsonable {
-  CreateFile(this.uri, this.options) {
+class CreateFile implements ToJsonable {
+  CreateFile(this.kind, this.uri, this.options) {
+    if (kind == null) {
+      throw 'kind is required but was not provided';
+    }
     if (uri == null) {
       throw 'uri is required but was not provided';
     }
   }
-  factory CreateFile.fromJson(Map<String, dynamic> json) {
+  static CreateFile fromJson(Map<String, dynamic> json) {
+    final kind = json['kind'];
     final uri = json['uri'];
     final options = json['options'] != null
-        ? new CreateFileOptions.fromJson(json['options'])
+        ? CreateFileOptions.fromJson(json['options'])
         : null;
-    return new CreateFile(uri, options);
+    return new CreateFile(kind, uri, options);
   }
 
+  /// A create
+  final String kind;
+
   /// Additional options
   final CreateFileOptions options;
 
@@ -1478,6 +2127,7 @@
 
   Map<String, dynamic> toJson() {
     Map<String, dynamic> __result = {};
+    __result['kind'] = kind ?? (throw 'kind is required but was not set');
     __result['uri'] = uri ?? (throw 'uri is required but was not set');
     if (options != null) {
       __result['options'] = options;
@@ -1487,15 +2137,40 @@
 
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic> &&
+        obj.containsKey('kind') &&
+        obj['kind'] is String &&
         obj.containsKey('uri') &&
         obj['uri'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CreateFile) {
+      return kind == other.kind &&
+          uri == other.uri &&
+          options == other.options &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, kind.hashCode);
+    hash = JenkinsSmiHash.combine(hash, uri.hashCode);
+    hash = JenkinsSmiHash.combine(hash, options.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Options to create a file.
 class CreateFileOptions implements ToJsonable {
   CreateFileOptions(this.overwrite, this.ignoreIfExists);
-  factory CreateFileOptions.fromJson(Map<String, dynamic> json) {
+  static CreateFileOptions fromJson(Map<String, dynamic> json) {
     final overwrite = json['overwrite'];
     final ignoreIfExists = json['ignoreIfExists'];
     return new CreateFileOptions(overwrite, ignoreIfExists);
@@ -1521,23 +2196,51 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is CreateFileOptions) {
+      return overwrite == other.overwrite &&
+          ignoreIfExists == other.ignoreIfExists &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, overwrite.hashCode);
+    hash = JenkinsSmiHash.combine(hash, ignoreIfExists.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Delete file operation
-class DeleteFile implements FileOperation, ToJsonable {
-  DeleteFile(this.uri, this.options) {
+class DeleteFile implements ToJsonable {
+  DeleteFile(this.kind, this.uri, this.options) {
+    if (kind == null) {
+      throw 'kind is required but was not provided';
+    }
     if (uri == null) {
       throw 'uri is required but was not provided';
     }
   }
-  factory DeleteFile.fromJson(Map<String, dynamic> json) {
+  static DeleteFile fromJson(Map<String, dynamic> json) {
+    final kind = json['kind'];
     final uri = json['uri'];
     final options = json['options'] != null
-        ? new DeleteFileOptions.fromJson(json['options'])
+        ? DeleteFileOptions.fromJson(json['options'])
         : null;
-    return new DeleteFile(uri, options);
+    return new DeleteFile(kind, uri, options);
   }
 
+  /// A delete
+  final String kind;
+
   /// Delete options.
   final DeleteFileOptions options;
 
@@ -1546,6 +2249,7 @@
 
   Map<String, dynamic> toJson() {
     Map<String, dynamic> __result = {};
+    __result['kind'] = kind ?? (throw 'kind is required but was not set');
     __result['uri'] = uri ?? (throw 'uri is required but was not set');
     if (options != null) {
       __result['options'] = options;
@@ -1555,15 +2259,40 @@
 
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic> &&
+        obj.containsKey('kind') &&
+        obj['kind'] is String &&
         obj.containsKey('uri') &&
         obj['uri'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DeleteFile) {
+      return kind == other.kind &&
+          uri == other.uri &&
+          options == other.options &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, kind.hashCode);
+    hash = JenkinsSmiHash.combine(hash, uri.hashCode);
+    hash = JenkinsSmiHash.combine(hash, options.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Delete file options
 class DeleteFileOptions implements ToJsonable {
   DeleteFileOptions(this.recursive, this.ignoreIfNotExists);
-  factory DeleteFileOptions.fromJson(Map<String, dynamic> json) {
+  static DeleteFileOptions fromJson(Map<String, dynamic> json) {
     final recursive = json['recursive'];
     final ignoreIfNotExists = json['ignoreIfNotExists'];
     return new DeleteFileOptions(recursive, ignoreIfNotExists);
@@ -1589,6 +2318,27 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DeleteFileOptions) {
+      return recursive == other.recursive &&
+          ignoreIfNotExists == other.ignoreIfNotExists &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, recursive.hashCode);
+    hash = JenkinsSmiHash.combine(hash, ignoreIfNotExists.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class Diagnostic implements ToJsonable {
@@ -1601,23 +2351,17 @@
       throw 'message is required but was not provided';
     }
   }
-  factory Diagnostic.fromJson(Map<String, dynamic> json) {
-    final range =
-        json['range'] != null ? new Range.fromJson(json['range']) : null;
+  static Diagnostic fromJson(Map<String, dynamic> json) {
+    final range = json['range'] != null ? Range.fromJson(json['range']) : null;
     final severity = json['severity'] != null
-        ? new DiagnosticSeverity.fromJson(json['severity'])
+        ? DiagnosticSeverity.fromJson(json['severity'])
         : null;
-    final code = json['code'] is num
-        ? new Either2<num, String>.t1(json['code'])
-        : (json['code'] is String
-            ? new Either2<num, String>.t2(json['code'])
-            : (throw '''${json['code']} was not one of (number, string)'''));
+    final code = json['code'];
     final source = json['source'];
     final message = json['message'];
     final relatedInformation = json['relatedInformation']
-        ?.map((item) => item != null
-            ? new DiagnosticRelatedInformation.fromJson(item)
-            : null)
+        ?.map((item) =>
+            item != null ? DiagnosticRelatedInformation.fromJson(item) : null)
         ?.cast<DiagnosticRelatedInformation>()
         ?.toList();
     return new Diagnostic(
@@ -1625,7 +2369,7 @@
   }
 
   /// The diagnostic's code, which might appear in the user interface.
-  final Either2<num, String> code;
+  final String code;
 
   /// The diagnostic's message.
   final String message;
@@ -1633,9 +2377,8 @@
   /// The range at which the message applies.
   final Range range;
 
-  /// An array of related diagnostic information, e.g. when symbol-names
-  /// within a scope collide all definitions can be marked via this
-  /// property.
+  /// An array of related diagnostic information, e.g. when symbol-names within
+  /// a scope collide all definitions can be marked via this property.
   final List<DiagnosticRelatedInformation> relatedInformation;
 
   /// The diagnostic's severity. Can be omitted. If omitted it is up to the
@@ -1673,11 +2416,45 @@
         obj.containsKey('message') &&
         obj['message'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is Diagnostic) {
+      return range == other.range &&
+          severity == other.severity &&
+          code == other.code &&
+          source == other.source &&
+          message == other.message &&
+          listEqual(
+              relatedInformation,
+              other.relatedInformation,
+              (DiagnosticRelatedInformation a,
+                      DiagnosticRelatedInformation b) =>
+                  a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, range.hashCode);
+    hash = JenkinsSmiHash.combine(hash, severity.hashCode);
+    hash = JenkinsSmiHash.combine(hash, code.hashCode);
+    hash = JenkinsSmiHash.combine(hash, source.hashCode);
+    hash = JenkinsSmiHash.combine(hash, message.hashCode);
+    hash = JenkinsSmiHash.combine(hash, relatedInformation.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-/// Represents a related message and source code location for a diagnostic.
-/// This should be used to point to code locations that cause or related to
-/// a diagnostics, e.g when duplicating a symbol in a scope.
+/// Represents a related message and source code location for a diagnostic. This
+/// should be used to point to code locations that cause or related to a
+/// diagnostics, e.g when duplicating a symbol in a scope.
 class DiagnosticRelatedInformation implements ToJsonable {
   DiagnosticRelatedInformation(this.location, this.message) {
     if (location == null) {
@@ -1687,10 +2464,9 @@
       throw 'message is required but was not provided';
     }
   }
-  factory DiagnosticRelatedInformation.fromJson(Map<String, dynamic> json) {
-    final location = json['location'] != null
-        ? new Location.fromJson(json['location'])
-        : null;
+  static DiagnosticRelatedInformation fromJson(Map<String, dynamic> json) {
+    final location =
+        json['location'] != null ? Location.fromJson(json['location']) : null;
     final message = json['message'];
     return new DiagnosticRelatedInformation(location, message);
   }
@@ -1717,13 +2493,32 @@
         obj.containsKey('message') &&
         obj['message'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DiagnosticRelatedInformation) {
+      return location == other.location && message == other.message && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, location.hashCode);
+    hash = JenkinsSmiHash.combine(hash, message.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DiagnosticSeverity {
   const DiagnosticSeverity._(this._value);
   const DiagnosticSeverity.fromJson(this._value);
 
-  final Object _value;
+  final num _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
@@ -1765,7 +2560,7 @@
       throw 'settings is required but was not provided';
     }
   }
-  factory DidChangeConfigurationParams.fromJson(Map<String, dynamic> json) {
+  static DidChangeConfigurationParams fromJson(Map<String, dynamic> json) {
     final settings = json['settings'];
     return new DidChangeConfigurationParams(settings);
   }
@@ -1783,6 +2578,24 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic> && obj.containsKey('settings') && true;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DidChangeConfigurationParams) {
+      return settings == other.settings && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, settings.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DidChangeTextDocumentParams implements ToJsonable {
@@ -1794,27 +2607,25 @@
       throw 'contentChanges is required but was not provided';
     }
   }
-  factory DidChangeTextDocumentParams.fromJson(Map<String, dynamic> json) {
+  static DidChangeTextDocumentParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new VersionedTextDocumentIdentifier.fromJson(json['textDocument'])
+        ? VersionedTextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
     final contentChanges = json['contentChanges']
-        ?.map((item) => item != null
-            ? new TextDocumentContentChangeEvent.fromJson(item)
-            : null)
+        ?.map((item) =>
+            item != null ? TextDocumentContentChangeEvent.fromJson(item) : null)
         ?.cast<TextDocumentContentChangeEvent>()
         ?.toList();
     return new DidChangeTextDocumentParams(textDocument, contentChanges);
   }
 
-  /// The actual content changes. The content changes describe single
-  /// state changes to the document. So if there are two content changes
-  /// c1 and c2 for a document in state S then c1 move the document to S'
-  /// and c2 to S''.
+  /// The actual content changes. The content changes describe single state
+  /// changes to the document. So if there are two content changes c1 and c2 for
+  /// a document in state S then c1 move the document to S' and c2 to S''.
   final List<TextDocumentContentChangeEvent> contentChanges;
 
-  /// The document that did change. The version number points to the
-  /// version after all provided content changes have been applied.
+  /// The document that did change. The version number points to the version
+  /// after all provided content changes have been applied.
   final VersionedTextDocumentIdentifier textDocument;
 
   Map<String, dynamic> toJson() {
@@ -1836,6 +2647,32 @@
                 obj['contentChanges'].every(
                     (item) => TextDocumentContentChangeEvent.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DidChangeTextDocumentParams) {
+      return textDocument == other.textDocument &&
+          listEqual(
+              contentChanges,
+              other.contentChanges,
+              (TextDocumentContentChangeEvent a,
+                      TextDocumentContentChangeEvent b) =>
+                  a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, contentChanges.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DidChangeWatchedFilesParams implements ToJsonable {
@@ -1844,9 +2681,9 @@
       throw 'changes is required but was not provided';
     }
   }
-  factory DidChangeWatchedFilesParams.fromJson(Map<String, dynamic> json) {
+  static DidChangeWatchedFilesParams fromJson(Map<String, dynamic> json) {
     final changes = json['changes']
-        ?.map((item) => item != null ? new FileEvent.fromJson(item) : null)
+        ?.map((item) => item != null ? FileEvent.fromJson(item) : null)
         ?.cast<FileEvent>()
         ?.toList();
     return new DidChangeWatchedFilesParams(changes);
@@ -1869,6 +2706,26 @@
             (obj['changes'].length == 0 ||
                 obj['changes'].every((item) => FileEvent.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DidChangeWatchedFilesParams) {
+      return listEqual(
+              changes, other.changes, (FileEvent a, FileEvent b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, changes.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Describe options to be used when registering for text document change
@@ -1879,11 +2736,10 @@
       throw 'watchers is required but was not provided';
     }
   }
-  factory DidChangeWatchedFilesRegistrationOptions.fromJson(
+  static DidChangeWatchedFilesRegistrationOptions fromJson(
       Map<String, dynamic> json) {
     final watchers = json['watchers']
-        ?.map((item) =>
-            item != null ? new FileSystemWatcher.fromJson(item) : null)
+        ?.map((item) => item != null ? FileSystemWatcher.fromJson(item) : null)
         ?.cast<FileSystemWatcher>()
         ?.toList();
     return new DidChangeWatchedFilesRegistrationOptions(watchers);
@@ -1907,6 +2763,26 @@
                 obj['watchers']
                     .every((item) => FileSystemWatcher.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DidChangeWatchedFilesRegistrationOptions) {
+      return listEqual(watchers, other.watchers,
+              (FileSystemWatcher a, FileSystemWatcher b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, watchers.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DidChangeWorkspaceFoldersParams implements ToJsonable {
@@ -1915,9 +2791,9 @@
       throw 'event is required but was not provided';
     }
   }
-  factory DidChangeWorkspaceFoldersParams.fromJson(Map<String, dynamic> json) {
+  static DidChangeWorkspaceFoldersParams fromJson(Map<String, dynamic> json) {
     final event = json['event'] != null
-        ? new WorkspaceFoldersChangeEvent.fromJson(json['event'])
+        ? WorkspaceFoldersChangeEvent.fromJson(json['event'])
         : null;
     return new DidChangeWorkspaceFoldersParams(event);
   }
@@ -1936,6 +2812,24 @@
         obj.containsKey('event') &&
         WorkspaceFoldersChangeEvent.canParse(obj['event']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DidChangeWorkspaceFoldersParams) {
+      return event == other.event && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, event.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DidCloseTextDocumentParams implements ToJsonable {
@@ -1944,9 +2838,9 @@
       throw 'textDocument is required but was not provided';
     }
   }
-  factory DidCloseTextDocumentParams.fromJson(Map<String, dynamic> json) {
+  static DidCloseTextDocumentParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
     return new DidCloseTextDocumentParams(textDocument);
   }
@@ -1966,6 +2860,24 @@
         obj.containsKey('textDocument') &&
         TextDocumentIdentifier.canParse(obj['textDocument']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DidCloseTextDocumentParams) {
+      return textDocument == other.textDocument && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DidOpenTextDocumentParams implements ToJsonable {
@@ -1974,9 +2886,9 @@
       throw 'textDocument is required but was not provided';
     }
   }
-  factory DidOpenTextDocumentParams.fromJson(Map<String, dynamic> json) {
+  static DidOpenTextDocumentParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentItem.fromJson(json['textDocument'])
+        ? TextDocumentItem.fromJson(json['textDocument'])
         : null;
     return new DidOpenTextDocumentParams(textDocument);
   }
@@ -1996,6 +2908,24 @@
         obj.containsKey('textDocument') &&
         TextDocumentItem.canParse(obj['textDocument']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DidOpenTextDocumentParams) {
+      return textDocument == other.textDocument && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DidSaveTextDocumentParams implements ToJsonable {
@@ -2004,16 +2934,16 @@
       throw 'textDocument is required but was not provided';
     }
   }
-  factory DidSaveTextDocumentParams.fromJson(Map<String, dynamic> json) {
+  static DidSaveTextDocumentParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
     final text = json['text'];
     return new DidSaveTextDocumentParams(textDocument, text);
   }
 
-  /// Optional the content when saved. Depends on the includeText value
-  /// when the save notification was requested.
+  /// Optional the content when saved. Depends on the includeText value when the
+  /// save notification was requested.
   final String text;
 
   /// The document that was saved.
@@ -2034,11 +2964,30 @@
         obj.containsKey('textDocument') &&
         TextDocumentIdentifier.canParse(obj['textDocument']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DidSaveTextDocumentParams) {
+      return textDocument == other.textDocument && text == other.text && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, text.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DocumentFilter implements ToJsonable {
   DocumentFilter(this.language, this.scheme, this.pattern);
-  factory DocumentFilter.fromJson(Map<String, dynamic> json) {
+  static DocumentFilter fromJson(Map<String, dynamic> json) {
     final language = json['language'];
     final scheme = json['scheme'];
     final pattern = json['pattern'];
@@ -2071,6 +3020,29 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DocumentFilter) {
+      return language == other.language &&
+          scheme == other.scheme &&
+          pattern == other.pattern &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, language.hashCode);
+    hash = JenkinsSmiHash.combine(hash, scheme.hashCode);
+    hash = JenkinsSmiHash.combine(hash, pattern.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DocumentFormattingParams implements ToJsonable {
@@ -2082,12 +3054,12 @@
       throw 'options is required but was not provided';
     }
   }
-  factory DocumentFormattingParams.fromJson(Map<String, dynamic> json) {
+  static DocumentFormattingParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
     final options = json['options'] != null
-        ? new FormattingOptions.fromJson(json['options'])
+        ? FormattingOptions.fromJson(json['options'])
         : null;
     return new DocumentFormattingParams(textDocument, options);
   }
@@ -2114,22 +3086,42 @@
         obj.containsKey('options') &&
         FormattingOptions.canParse(obj['options']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DocumentFormattingParams) {
+      return textDocument == other.textDocument &&
+          options == other.options &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, options.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// A document highlight is a range inside a text document which deserves
-/// special attention. Usually a document highlight is visualized by
-/// changing the background color of its range.
+/// special attention. Usually a document highlight is visualized by changing
+/// the background color of its range.
 class DocumentHighlight implements ToJsonable {
   DocumentHighlight(this.range, this.kind) {
     if (range == null) {
       throw 'range is required but was not provided';
     }
   }
-  factory DocumentHighlight.fromJson(Map<String, dynamic> json) {
-    final range =
-        json['range'] != null ? new Range.fromJson(json['range']) : null;
+  static DocumentHighlight fromJson(Map<String, dynamic> json) {
+    final range = json['range'] != null ? Range.fromJson(json['range']) : null;
     final kind = json['kind'] != null
-        ? new DocumentHighlightKind.fromJson(json['kind'])
+        ? DocumentHighlightKind.fromJson(json['kind'])
         : null;
     return new DocumentHighlight(range, kind);
   }
@@ -2154,6 +3146,25 @@
         obj.containsKey('range') &&
         Range.canParse(obj['range']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DocumentHighlight) {
+      return range == other.range && kind == other.kind && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, range.hashCode);
+    hash = JenkinsSmiHash.combine(hash, kind.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// A document highlight kind.
@@ -2161,7 +3172,7 @@
   const DocumentHighlightKind._(this._value);
   const DocumentHighlightKind.fromJson(this._value);
 
-  final Object _value;
+  final num _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
@@ -2193,18 +3204,16 @@
   bool operator ==(o) => o is DocumentHighlightKind && o._value == _value;
 }
 
-/// A document link is a range in a text document that links to an
-/// internal or external resource, like another text document or a web
-/// site.
+/// A document link is a range in a text document that links to an internal or
+/// external resource, like another text document or a web site.
 class DocumentLink implements ToJsonable {
   DocumentLink(this.range, this.target, this.data) {
     if (range == null) {
       throw 'range is required but was not provided';
     }
   }
-  factory DocumentLink.fromJson(Map<String, dynamic> json) {
-    final range =
-        json['range'] != null ? new Range.fromJson(json['range']) : null;
+  static DocumentLink fromJson(Map<String, dynamic> json) {
+    final range = json['range'] != null ? Range.fromJson(json['range']) : null;
     final target = json['target'];
     final data = json['data'];
     return new DocumentLink(range, target, data);
@@ -2217,8 +3226,7 @@
   /// The range this link applies to.
   final Range range;
 
-  /// The uri this link points to. If missing a resolve request is sent
-  /// later.
+  /// The uri this link points to. If missing a resolve request is sent later.
   final String target;
 
   Map<String, dynamic> toJson() {
@@ -2238,12 +3246,35 @@
         obj.containsKey('range') &&
         Range.canParse(obj['range']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DocumentLink) {
+      return range == other.range &&
+          target == other.target &&
+          data == other.data &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, range.hashCode);
+    hash = JenkinsSmiHash.combine(hash, target.hashCode);
+    hash = JenkinsSmiHash.combine(hash, data.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Document link options.
 class DocumentLinkOptions implements ToJsonable {
   DocumentLinkOptions(this.resolveProvider);
-  factory DocumentLinkOptions.fromJson(Map<String, dynamic> json) {
+  static DocumentLinkOptions fromJson(Map<String, dynamic> json) {
     final resolveProvider = json['resolveProvider'];
     return new DocumentLinkOptions(resolveProvider);
   }
@@ -2262,6 +3293,24 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DocumentLinkOptions) {
+      return resolveProvider == other.resolveProvider && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, resolveProvider.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DocumentLinkParams implements ToJsonable {
@@ -2270,9 +3319,9 @@
       throw 'textDocument is required but was not provided';
     }
   }
-  factory DocumentLinkParams.fromJson(Map<String, dynamic> json) {
+  static DocumentLinkParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
     return new DocumentLinkParams(textDocument);
   }
@@ -2292,24 +3341,41 @@
         obj.containsKey('textDocument') &&
         TextDocumentIdentifier.canParse(obj['textDocument']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DocumentLinkParams) {
+      return textDocument == other.textDocument && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DocumentLinkRegistrationOptions
     implements TextDocumentRegistrationOptions, ToJsonable {
   DocumentLinkRegistrationOptions(this.resolveProvider, this.documentSelector);
-  factory DocumentLinkRegistrationOptions.fromJson(Map<String, dynamic> json) {
+  static DocumentLinkRegistrationOptions fromJson(Map<String, dynamic> json) {
     final resolveProvider = json['resolveProvider'];
     final documentSelector = json['documentSelector']
-        ?.map((item) => item != null ? new DocumentFilter.fromJson(item) : null)
+        ?.map((item) => item != null ? DocumentFilter.fromJson(item) : null)
         ?.cast<DocumentFilter>()
         ?.toList();
     return new DocumentLinkRegistrationOptions(
         resolveProvider, documentSelector);
   }
 
-  /// A document selector to identify the scope of the registration. If
-  /// set to null the document selector provided on the client side will
-  /// be used.
+  /// A document selector to identify the scope of the registration. If set to
+  /// null the document selector provided on the client side will be used.
   final List<DocumentFilter> documentSelector;
 
   /// Document links have a resolve provider as well.
@@ -2332,6 +3398,27 @@
                 obj['documentSelector']
                     .every((item) => DocumentFilter.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DocumentLinkRegistrationOptions) {
+      return resolveProvider == other.resolveProvider &&
+          documentSelector == other.documentSelector &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, resolveProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentSelector.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Format document on type options.
@@ -2342,7 +3429,7 @@
       throw 'firstTriggerCharacter is required but was not provided';
     }
   }
-  factory DocumentOnTypeFormattingOptions.fromJson(Map<String, dynamic> json) {
+  static DocumentOnTypeFormattingOptions fromJson(Map<String, dynamic> json) {
     final firstTriggerCharacter = json['firstTriggerCharacter'];
     final moreTriggerCharacter = json['moreTriggerCharacter']
         ?.map((item) => item)
@@ -2373,6 +3460,28 @@
         obj.containsKey('firstTriggerCharacter') &&
         obj['firstTriggerCharacter'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DocumentOnTypeFormattingOptions) {
+      return firstTriggerCharacter == other.firstTriggerCharacter &&
+          listEqual(moreTriggerCharacter, other.moreTriggerCharacter,
+              (String a, String b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, firstTriggerCharacter.hashCode);
+    hash = JenkinsSmiHash.combine(hash, moreTriggerCharacter.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DocumentOnTypeFormattingParams implements ToJsonable {
@@ -2391,16 +3500,15 @@
       throw 'options is required but was not provided';
     }
   }
-  factory DocumentOnTypeFormattingParams.fromJson(Map<String, dynamic> json) {
+  static DocumentOnTypeFormattingParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
-    final position = json['position'] != null
-        ? new Position.fromJson(json['position'])
-        : null;
+    final position =
+        json['position'] != null ? Position.fromJson(json['position']) : null;
     final ch = json['ch'];
     final options = json['options'] != null
-        ? new FormattingOptions.fromJson(json['options'])
+        ? FormattingOptions.fromJson(json['options'])
         : null;
     return new DocumentOnTypeFormattingParams(
         textDocument, position, ch, options);
@@ -2441,6 +3549,31 @@
         obj.containsKey('options') &&
         FormattingOptions.canParse(obj['options']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DocumentOnTypeFormattingParams) {
+      return textDocument == other.textDocument &&
+          position == other.position &&
+          ch == other.ch &&
+          options == other.options &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, position.hashCode);
+    hash = JenkinsSmiHash.combine(hash, ch.hashCode);
+    hash = JenkinsSmiHash.combine(hash, options.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DocumentOnTypeFormattingRegistrationOptions
@@ -2451,7 +3584,7 @@
       throw 'firstTriggerCharacter is required but was not provided';
     }
   }
-  factory DocumentOnTypeFormattingRegistrationOptions.fromJson(
+  static DocumentOnTypeFormattingRegistrationOptions fromJson(
       Map<String, dynamic> json) {
     final firstTriggerCharacter = json['firstTriggerCharacter'];
     final moreTriggerCharacter = json['moreTriggerCharacter']
@@ -2459,16 +3592,15 @@
         ?.cast<String>()
         ?.toList();
     final documentSelector = json['documentSelector']
-        ?.map((item) => item != null ? new DocumentFilter.fromJson(item) : null)
+        ?.map((item) => item != null ? DocumentFilter.fromJson(item) : null)
         ?.cast<DocumentFilter>()
         ?.toList();
     return new DocumentOnTypeFormattingRegistrationOptions(
         firstTriggerCharacter, moreTriggerCharacter, documentSelector);
   }
 
-  /// A document selector to identify the scope of the registration. If
-  /// set to null the document selector provided on the client side will
-  /// be used.
+  /// A document selector to identify the scope of the registration. If set to
+  /// null the document selector provided on the client side will be used.
   final List<DocumentFilter> documentSelector;
 
   /// A character on which formatting should be triggered, like `}`.
@@ -2498,6 +3630,30 @@
                 obj['documentSelector']
                     .every((item) => DocumentFilter.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DocumentOnTypeFormattingRegistrationOptions) {
+      return firstTriggerCharacter == other.firstTriggerCharacter &&
+          listEqual(moreTriggerCharacter, other.moreTriggerCharacter,
+              (String a, String b) => a == b) &&
+          documentSelector == other.documentSelector &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, firstTriggerCharacter.hashCode);
+    hash = JenkinsSmiHash.combine(hash, moreTriggerCharacter.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentSelector.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DocumentRangeFormattingParams implements ToJsonable {
@@ -2512,14 +3668,13 @@
       throw 'options is required but was not provided';
     }
   }
-  factory DocumentRangeFormattingParams.fromJson(Map<String, dynamic> json) {
+  static DocumentRangeFormattingParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
-    final range =
-        json['range'] != null ? new Range.fromJson(json['range']) : null;
+    final range = json['range'] != null ? Range.fromJson(json['range']) : null;
     final options = json['options'] != null
-        ? new FormattingOptions.fromJson(json['options'])
+        ? FormattingOptions.fromJson(json['options'])
         : null;
     return new DocumentRangeFormattingParams(textDocument, range, options);
   }
@@ -2552,13 +3707,35 @@
         obj.containsKey('options') &&
         FormattingOptions.canParse(obj['options']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DocumentRangeFormattingParams) {
+      return textDocument == other.textDocument &&
+          range == other.range &&
+          options == other.options &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, range.hashCode);
+    hash = JenkinsSmiHash.combine(hash, options.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-/// Represents programming constructs like variables, classes,
-/// interfaces etc. that appear in a document. Document symbols can be
-/// hierarchical and they have two ranges: one that encloses its
-/// definition and one that points to its most interesting range, e.g.
-/// the range of an identifier.
+/// Represents programming constructs like variables, classes, interfaces etc.
+/// that appear in a document. Document symbols can be hierarchical and they
+/// have two ranges: one that encloses its definition and one that points to its
+/// most interesting range, e.g. the range of an identifier.
 class DocumentSymbol implements ToJsonable {
   DocumentSymbol(this.name, this.detail, this.kind, this.deprecated, this.range,
       this.selectionRange, this.children) {
@@ -2575,19 +3752,18 @@
       throw 'selectionRange is required but was not provided';
     }
   }
-  factory DocumentSymbol.fromJson(Map<String, dynamic> json) {
+  static DocumentSymbol fromJson(Map<String, dynamic> json) {
     final name = json['name'];
     final detail = json['detail'];
     final kind =
-        json['kind'] != null ? new SymbolKind.fromJson(json['kind']) : null;
+        json['kind'] != null ? SymbolKind.fromJson(json['kind']) : null;
     final deprecated = json['deprecated'];
-    final range =
-        json['range'] != null ? new Range.fromJson(json['range']) : null;
+    final range = json['range'] != null ? Range.fromJson(json['range']) : null;
     final selectionRange = json['selectionRange'] != null
-        ? new Range.fromJson(json['selectionRange'])
+        ? Range.fromJson(json['selectionRange'])
         : null;
     final children = json['children']
-        ?.map((item) => item != null ? new DocumentSymbol.fromJson(item) : null)
+        ?.map((item) => item != null ? DocumentSymbol.fromJson(item) : null)
         ?.cast<DocumentSymbol>()
         ?.toList();
     return new DocumentSymbol(
@@ -2609,15 +3785,14 @@
   /// The name of this symbol.
   final String name;
 
-  /// The range enclosing this symbol not including leading/trailing
-  /// whitespace but everything else like comments. This information is
-  /// typically used to determine if the clients cursor is inside the
-  /// symbol to reveal in the symbol in the UI.
+  /// The range enclosing this symbol not including leading/trailing whitespace
+  /// but everything else like comments. This information is typically used to
+  /// determine if the clients cursor is inside the symbol to reveal in the
+  /// symbol in the UI.
   final Range range;
 
-  /// The range that should be selected and revealed when this symbol is
-  /// being picked, e.g the name of a function. Must be contained by the
-  /// `range`.
+  /// The range that should be selected and revealed when this symbol is being
+  /// picked, e.g the name of a function. Must be contained by the `range`.
   final Range selectionRange;
 
   Map<String, dynamic> toJson() {
@@ -2650,6 +3825,38 @@
         obj.containsKey('selectionRange') &&
         Range.canParse(obj['selectionRange']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DocumentSymbol) {
+      return name == other.name &&
+          detail == other.detail &&
+          kind == other.kind &&
+          deprecated == other.deprecated &&
+          range == other.range &&
+          selectionRange == other.selectionRange &&
+          listEqual(children, other.children,
+              (DocumentSymbol a, DocumentSymbol b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, name.hashCode);
+    hash = JenkinsSmiHash.combine(hash, detail.hashCode);
+    hash = JenkinsSmiHash.combine(hash, kind.hashCode);
+    hash = JenkinsSmiHash.combine(hash, deprecated.hashCode);
+    hash = JenkinsSmiHash.combine(hash, range.hashCode);
+    hash = JenkinsSmiHash.combine(hash, selectionRange.hashCode);
+    hash = JenkinsSmiHash.combine(hash, children.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class DocumentSymbolParams implements ToJsonable {
@@ -2658,9 +3865,9 @@
       throw 'textDocument is required but was not provided';
     }
   }
-  factory DocumentSymbolParams.fromJson(Map<String, dynamic> json) {
+  static DocumentSymbolParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
     return new DocumentSymbolParams(textDocument);
   }
@@ -2680,19 +3887,59 @@
         obj.containsKey('textDocument') &&
         TextDocumentIdentifier.canParse(obj['textDocument']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is DocumentSymbolParams) {
+      return textDocument == other.textDocument && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-abstract class ErrorCodes {
-  static const InternalError = -32603;
-  static const InvalidParams = -32602;
-  static const InvalidRequest = -32600;
-  static const MethodNotFound = -32601;
-  static const ParseError = -32700;
-  static const RequestCancelled = -32800;
-  static const ServerNotInitialized = -32002;
-  static const UnknownErrorCode = -32001;
-  static const serverErrorEnd = -32000;
-  static const serverErrorStart = -32099;
+class ErrorCodes {
+  const ErrorCodes(this._value);
+  const ErrorCodes.fromJson(this._value);
+
+  final num _value;
+
+  static bool canParse(Object obj) {
+    return obj is num;
+  }
+
+  /// Defined by JSON RPC
+  static const ParseError = const ErrorCodes(-32700);
+  static const InvalidRequest = const ErrorCodes(-32600);
+  static const MethodNotFound = const ErrorCodes(-32601);
+  static const InvalidParams = const ErrorCodes(-32602);
+  static const InternalError = const ErrorCodes(-32603);
+  static const serverErrorStart = const ErrorCodes(-32099);
+  static const serverErrorEnd = const ErrorCodes(-32000);
+  static const ServerNotInitialized = const ErrorCodes(-32002);
+  static const UnknownErrorCode = const ErrorCodes(-32001);
+
+  /// Defined by the protocol.
+  static const RequestCancelled = const ErrorCodes(-32800);
+
+  Object toJson() => _value;
+
+  @override
+  String toString() => _value.toString();
+
+  @override
+  get hashCode => _value.hashCode;
+
+  bool operator ==(o) => o is ErrorCodes && o._value == _value;
 }
 
 /// Execute command options.
@@ -2702,7 +3949,7 @@
       throw 'commands is required but was not provided';
     }
   }
-  factory ExecuteCommandOptions.fromJson(Map<String, dynamic> json) {
+  static ExecuteCommandOptions fromJson(Map<String, dynamic> json) {
     final commands =
         json['commands']?.map((item) => item)?.cast<String>()?.toList();
     return new ExecuteCommandOptions(commands);
@@ -2725,6 +3972,26 @@
             (obj['commands'].length == 0 ||
                 obj['commands'].every((item) => item is String)));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ExecuteCommandOptions) {
+      return listEqual(
+              commands, other.commands, (String a, String b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, commands.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ExecuteCommandParams implements ToJsonable {
@@ -2733,7 +4000,7 @@
       throw 'command is required but was not provided';
     }
   }
-  factory ExecuteCommandParams.fromJson(Map<String, dynamic> json) {
+  static ExecuteCommandParams fromJson(Map<String, dynamic> json) {
     final command = json['command'];
     final arguments =
         json['arguments']?.map((item) => item)?.cast<dynamic>()?.toList();
@@ -2761,6 +4028,28 @@
         obj.containsKey('command') &&
         obj['command'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ExecuteCommandParams) {
+      return command == other.command &&
+          listEqual(
+              arguments, other.arguments, (dynamic a, dynamic b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, command.hashCode);
+    hash = JenkinsSmiHash.combine(hash, arguments.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Execute command registration options.
@@ -2770,8 +4059,7 @@
       throw 'commands is required but was not provided';
     }
   }
-  factory ExecuteCommandRegistrationOptions.fromJson(
-      Map<String, dynamic> json) {
+  static ExecuteCommandRegistrationOptions fromJson(Map<String, dynamic> json) {
     final commands =
         json['commands']?.map((item) => item)?.cast<String>()?.toList();
     return new ExecuteCommandRegistrationOptions(commands);
@@ -2794,13 +4082,33 @@
             (obj['commands'].length == 0 ||
                 obj['commands'].every((item) => item is String)));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ExecuteCommandRegistrationOptions) {
+      return listEqual(
+              commands, other.commands, (String a, String b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, commands.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class FailureHandlingKind {
   const FailureHandlingKind._(this._value);
   const FailureHandlingKind.fromJson(this._value);
 
-  final Object _value;
+  final String _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
@@ -2813,25 +4121,23 @@
     return false;
   }
 
-  /// Applying the workspace change is simply aborted if one of the
-  /// changes provided fails. All operations executed before the
-  /// failing operation stay executed.
+  /// Applying the workspace change is simply aborted if one of the changes
+  /// provided fails. All operations executed before the failing operation stay
+  /// executed.
   static const Abort = const FailureHandlingKind._('abort');
 
-  /// All operations are executed transactional. That means they
-  /// either all succeed or no changes at all are applied to the
-  /// workspace.
+  /// All operations are executed transactional. That means they either all
+  /// succeed or no changes at all are applied to the workspace.
   static const Transactional = const FailureHandlingKind._('transactional');
 
-  /// If the workspace edit contains only textual file changes they
-  /// are executed transactional. If resource changes (create, rename
-  /// or delete file) are part of the change the failure handling
-  /// startegy is abort.
+  /// If the workspace edit contains only textual file changes they are executed
+  /// transactional. If resource changes (create, rename or delete file) are
+  /// part of the change the failure handling strategy is abort.
   static const TextOnlyTransactional =
       const FailureHandlingKind._('textOnlyTransactional');
 
-  /// The client tries to undo the operations already executed. But
-  /// there is no guaruntee that this is succeeding.
+  /// The client tries to undo the operations already executed. But there is no
+  /// guarantee that this is succeeding.
   static const Undo = const FailureHandlingKind._('undo');
 
   Object toJson() => _value;
@@ -2850,7 +4156,7 @@
   const FileChangeType._(this._value);
   const FileChangeType.fromJson(this._value);
 
-  final Object _value;
+  final num _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
@@ -2892,7 +4198,7 @@
       throw 'type is required but was not provided';
     }
   }
-  factory FileEvent.fromJson(Map<String, dynamic> json) {
+  static FileEvent fromJson(Map<String, dynamic> json) {
     final uri = json['uri'];
     final type = json['type'];
     return new FileEvent(uri, type);
@@ -2918,6 +4224,25 @@
         obj.containsKey('type') &&
         obj['type'] is num;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is FileEvent) {
+      return uri == other.uri && type == other.type && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, uri.hashCode);
+    hash = JenkinsSmiHash.combine(hash, type.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class FileSystemWatcher implements ToJsonable {
@@ -2926,19 +4251,17 @@
       throw 'globPattern is required but was not provided';
     }
   }
-  factory FileSystemWatcher.fromJson(Map<String, dynamic> json) {
+  static FileSystemWatcher fromJson(Map<String, dynamic> json) {
     final globPattern = json['globPattern'];
-    final kind =
-        json['kind'] != null ? new WatchKind.fromJson(json['kind']) : null;
+    final kind = json['kind'] != null ? WatchKind.fromJson(json['kind']) : null;
     return new FileSystemWatcher(globPattern, kind);
   }
 
   /// The  glob pattern to watch
   final String globPattern;
 
-  /// The kind of events of interest. If omitted it defaults to
-  /// WatchKind.Create | WatchKind.Change | WatchKind.Delete which
-  /// is 7.
+  /// The kind of events of interest. If omitted it defaults to WatchKind.Create
+  /// | WatchKind.Change | WatchKind.Delete which is 7.
   final WatchKind kind;
 
   Map<String, dynamic> toJson() {
@@ -2956,6 +4279,25 @@
         obj.containsKey('globPattern') &&
         obj['globPattern'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is FileSystemWatcher) {
+      return globPattern == other.globPattern && kind == other.kind && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, globPattern.hashCode);
+    hash = JenkinsSmiHash.combine(hash, kind.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Represents a folding range.
@@ -2969,34 +4311,32 @@
       throw 'endLine is required but was not provided';
     }
   }
-  factory FoldingRange.fromJson(Map<String, dynamic> json) {
+  static FoldingRange fromJson(Map<String, dynamic> json) {
     final startLine = json['startLine'];
     final startCharacter = json['startCharacter'];
     final endLine = json['endLine'];
     final endCharacter = json['endCharacter'];
-    final kind = json['kind'] != null
-        ? new FoldingRangeKind.fromJson(json['kind'])
-        : null;
+    final kind =
+        json['kind'] != null ? FoldingRangeKind.fromJson(json['kind']) : null;
     return new FoldingRange(
         startLine, startCharacter, endLine, endCharacter, kind);
   }
 
-  /// The zero-based character offset before the folded range ends.
-  /// If not defined, defaults to the length of the end line.
+  /// The zero-based character offset before the folded range ends. If not
+  /// defined, defaults to the length of the end line.
   final num endCharacter;
 
   /// The zero-based line number where the folded range ends.
   final num endLine;
 
-  /// Describes the kind of the folding range such as `comment' or
-  /// 'region'. The kind is used to categorize folding ranges and
-  /// used by commands like 'Fold all comments'. See
-  /// [FoldingRangeKind] for an enumeration of standardized kinds.
+  /// Describes the kind of the folding range such as `comment' or 'region'. The
+  /// kind is used to categorize folding ranges and used by commands like 'Fold
+  /// all comments'. See [FoldingRangeKind] for an enumeration of standardized
+  /// kinds.
   final FoldingRangeKind kind;
 
-  /// The zero-based character offset from where the folded range
-  /// starts. If not defined, defaults to the length of the start
-  /// line.
+  /// The zero-based character offset from where the folded range starts. If not
+  /// defined, defaults to the length of the start line.
   final num startCharacter;
 
   /// The zero-based line number from where the folded range starts.
@@ -3027,6 +4367,33 @@
         obj.containsKey('endLine') &&
         obj['endLine'] is num;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is FoldingRange) {
+      return startLine == other.startLine &&
+          startCharacter == other.startCharacter &&
+          endLine == other.endLine &&
+          endCharacter == other.endCharacter &&
+          kind == other.kind &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, startLine.hashCode);
+    hash = JenkinsSmiHash.combine(hash, startCharacter.hashCode);
+    hash = JenkinsSmiHash.combine(hash, endLine.hashCode);
+    hash = JenkinsSmiHash.combine(hash, endCharacter.hashCode);
+    hash = JenkinsSmiHash.combine(hash, kind.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Enum of known range kinds
@@ -3034,26 +4401,26 @@
   const FoldingRangeKind._(this._value);
   const FoldingRangeKind.fromJson(this._value);
 
-  final Object _value;
+  final String _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
-      case 'comment':
-      case 'imports':
-      case 'region':
+      case r'comment':
+      case r'imports':
+      case r'region':
         return true;
     }
     return false;
   }
 
   /// Folding range for a comment
-  static const Comment = const FoldingRangeKind._('comment');
+  static const Comment = const FoldingRangeKind._(r'comment');
 
   /// Folding range for a imports or includes
-  static const Imports = const FoldingRangeKind._('imports');
+  static const Imports = const FoldingRangeKind._(r'imports');
 
   /// Folding range for a region (e.g. `#region`)
-  static const Region = const FoldingRangeKind._('region');
+  static const Region = const FoldingRangeKind._(r'region');
 
   Object toJson() => _value;
 
@@ -3072,9 +4439,9 @@
       throw 'textDocument is required but was not provided';
     }
   }
-  factory FoldingRangeParams.fromJson(Map<String, dynamic> json) {
+  static FoldingRangeParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
     return new FoldingRangeParams(textDocument);
   }
@@ -3094,10 +4461,32 @@
         obj.containsKey('textDocument') &&
         TextDocumentIdentifier.canParse(obj['textDocument']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is FoldingRangeParams) {
+      return textDocument == other.textDocument && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Folding range provider options.
 class FoldingRangeProviderOptions implements ToJsonable {
+  static FoldingRangeProviderOptions fromJson(Map<String, dynamic> json) {
+    return new FoldingRangeProviderOptions();
+  }
+
   Map<String, dynamic> toJson() {
     Map<String, dynamic> __result = {};
     return __result;
@@ -3106,6 +4495,23 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is FoldingRangeProviderOptions) {
+      return true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Value-object describing what options formatting should use.
@@ -3118,7 +4524,7 @@
       throw 'insertSpaces is required but was not provided';
     }
   }
-  factory FormattingOptions.fromJson(Map<String, dynamic> json) {
+  static FormattingOptions fromJson(Map<String, dynamic> json) {
     final tabSize = json['tabSize'];
     final insertSpaces = json['insertSpaces'];
     return new FormattingOptions(tabSize, insertSpaces);
@@ -3146,6 +4552,27 @@
         obj.containsKey('insertSpaces') &&
         obj['insertSpaces'] is bool;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is FormattingOptions) {
+      return tabSize == other.tabSize &&
+          insertSpaces == other.insertSpaces &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, tabSize.hashCode);
+    hash = JenkinsSmiHash.combine(hash, insertSpaces.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// The result of a hover request.
@@ -3155,38 +4582,23 @@
       throw 'contents is required but was not provided';
     }
   }
-  factory Hover.fromJson(Map<String, dynamic> json) {
-    final contents = MarkedString.canParse(json['contents'])
-        ? new Either3<MarkedString, List<MarkedString>, MarkupContent>.t1(
-            json['contents'] != null
-                ? new MarkedString.fromJson(json['contents'])
+  static Hover fromJson(Map<String, dynamic> json) {
+    final contents = json['contents'] is String
+        ? new Either2<String, MarkupContent>.t1(json['contents'])
+        : (MarkupContent.canParse(json['contents'])
+            ? new Either2<String, MarkupContent>.t2(json['contents'] != null
+                ? MarkupContent.fromJson(json['contents'])
                 : null)
-        : ((json['contents'] is List &&
-                (json['contents'].length == 0 ||
-                    json['contents']
-                        .every((item) => MarkedString.canParse(item))))
-            ? new Either3<MarkedString, List<MarkedString>, MarkupContent>.t2(json['contents']
-                ?.map((item) =>
-                    item != null ? new MarkedString.fromJson(item) : null)
-                ?.cast<MarkedString>()
-                ?.toList())
-            : (MarkupContent.canParse(json['contents'])
-                ? new Either3<MarkedString, List<MarkedString>, MarkupContent>.t3(
-                    json['contents'] != null
-                        ? new MarkupContent.fromJson(json['contents'])
-                        : null)
-                : (throw '''${json['contents']} was not one of (MarkedString, MarkedString[], MarkupContent)''')));
-    final range =
-        json['range'] != null ? new Range.fromJson(json['range']) : null;
+            : (throw '''${json['contents']} was not one of (String, MarkupContent)'''));
+    final range = json['range'] != null ? Range.fromJson(json['range']) : null;
     return new Hover(contents, range);
   }
 
   /// The hover's content
-  final Either3<MarkedString, List<MarkedString>, MarkupContent> contents;
+  final Either2<String, MarkupContent> contents;
 
-  /// An optional range is a range inside a text document that is
-  /// used to visualize a hover, e.g. by changing the background
-  /// color.
+  /// An optional range is a range inside a text document that is used to
+  /// visualize a hover, e.g. by changing the background color.
   final Range range;
 
   Map<String, dynamic> toJson() {
@@ -3202,37 +4614,57 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic> &&
         obj.containsKey('contents') &&
-        (MarkedString.canParse(obj['contents']) ||
-            (obj['contents'] is List &&
-                (obj['contents'].length == 0 ||
-                    obj['contents']
-                        .every((item) => MarkedString.canParse(item)))) ||
-            MarkupContent.canParse(obj['contents']));
+        (obj['contents'] is String || MarkupContent.canParse(obj['contents']));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is Hover) {
+      return contents == other.contents && range == other.range && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, contents.hashCode);
+    hash = JenkinsSmiHash.combine(hash, range.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class InitializeParams implements ToJsonable {
-  InitializeParams(this.processId, this.rootPath, this.rootUri,
-      this.initializationOptions, this.capabilities, this.workspaceFolders) {
+  InitializeParams(
+      this.processId,
+      this.rootPath,
+      this.rootUri,
+      this.initializationOptions,
+      this.capabilities,
+      this.trace,
+      this.workspaceFolders) {
     if (capabilities == null) {
       throw 'capabilities is required but was not provided';
     }
   }
-  factory InitializeParams.fromJson(Map<String, dynamic> json) {
+  static InitializeParams fromJson(Map<String, dynamic> json) {
     final processId = json['processId'];
     final rootPath = json['rootPath'];
     final rootUri = json['rootUri'];
     final initializationOptions = json['initializationOptions'];
     final capabilities = json['capabilities'] != null
-        ? new ClientCapabilities.fromJson(json['capabilities'])
+        ? ClientCapabilities.fromJson(json['capabilities'])
         : null;
+    final trace = json['trace'];
     final workspaceFolders = json['workspaceFolders']
-        ?.map(
-            (item) => item != null ? new WorkspaceFolder.fromJson(item) : null)
+        ?.map((item) => item != null ? WorkspaceFolder.fromJson(item) : null)
         ?.cast<WorkspaceFolder>()
         ?.toList();
     return new InitializeParams(processId, rootPath, rootUri,
-        initializationOptions, capabilities, workspaceFolders);
+        initializationOptions, capabilities, trace, workspaceFolders);
   }
 
   /// The capabilities provided by the client (editor or tool)
@@ -3241,10 +4673,10 @@
   /// User provided initialization options.
   final dynamic initializationOptions;
 
-  /// The process Id of the parent process that started the
-  /// server. Is null if the process has not been started by
-  /// another process. If the parent process is not alive then the
-  /// server should exit (see exit notification) its process.
+  /// The process Id of the parent process that started the server. Is null if
+  /// the process has not been started by another process. If the parent process
+  /// is not alive then the server should exit (see exit notification) its
+  /// process.
   final num processId;
 
   /// The rootPath of the workspace. Is null if no folder is open.
@@ -3252,14 +4684,17 @@
   @core.deprecated
   final String rootPath;
 
-  /// The rootUri of the workspace. Is null if no folder is open.
-  /// If both `rootPath` and `rootUri` are set `rootUri` wins.
+  /// The rootUri of the workspace. Is null if no folder is open. If both
+  /// `rootPath` and `rootUri` are set `rootUri` wins.
   final String rootUri;
 
-  /// The workspace folders configured in the client when the
-  /// server starts. This property is only available if the client
-  /// supports workspace folders. It can be `null` if the client
-  /// supports workspace folders but none are configured.
+  /// The initial trace setting. If omitted trace is disabled ('off').
+  final String trace;
+
+  /// The workspace folders configured in the client when the server starts.
+  /// This property is only available if the client supports workspace folders.
+  /// It can be `null` if the client supports workspace folders but none are
+  /// configured.
   ///
   /// Since 3.6.0
   final List<WorkspaceFolder> workspaceFolders;
@@ -3267,9 +4702,7 @@
   Map<String, dynamic> toJson() {
     Map<String, dynamic> __result = {};
     __result['processId'] = processId;
-    // ignore: deprecated_member_use
     if (rootPath != null) {
-      // ignore: deprecated_member_use
       __result['rootPath'] = rootPath;
     }
     __result['rootUri'] = rootUri;
@@ -3278,6 +4711,9 @@
     }
     __result['capabilities'] =
         capabilities ?? (throw 'capabilities is required but was not set');
+    if (trace != null) {
+      __result['trace'] = trace;
+    }
     if (workspaceFolders != null) {
       __result['workspaceFolders'] = workspaceFolders;
     }
@@ -3293,6 +4729,38 @@
         obj.containsKey('capabilities') &&
         ClientCapabilities.canParse(obj['capabilities']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is InitializeParams) {
+      return processId == other.processId &&
+          rootPath == other.rootPath &&
+          rootUri == other.rootUri &&
+          initializationOptions == other.initializationOptions &&
+          capabilities == other.capabilities &&
+          trace == other.trace &&
+          listEqual(workspaceFolders, other.workspaceFolders,
+              (WorkspaceFolder a, WorkspaceFolder b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, processId.hashCode);
+    hash = JenkinsSmiHash.combine(hash, rootPath.hashCode);
+    hash = JenkinsSmiHash.combine(hash, rootUri.hashCode);
+    hash = JenkinsSmiHash.combine(hash, initializationOptions.hashCode);
+    hash = JenkinsSmiHash.combine(hash, capabilities.hashCode);
+    hash = JenkinsSmiHash.combine(hash, trace.hashCode);
+    hash = JenkinsSmiHash.combine(hash, workspaceFolders.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class InitializeResult implements ToJsonable {
@@ -3301,9 +4769,9 @@
       throw 'capabilities is required but was not provided';
     }
   }
-  factory InitializeResult.fromJson(Map<String, dynamic> json) {
+  static InitializeResult fromJson(Map<String, dynamic> json) {
     final capabilities = json['capabilities'] != null
-        ? new ServerCapabilities.fromJson(json['capabilities'])
+        ? ServerCapabilities.fromJson(json['capabilities'])
         : null;
     return new InitializeResult(capabilities);
   }
@@ -3323,9 +4791,31 @@
         obj.containsKey('capabilities') &&
         ServerCapabilities.canParse(obj['capabilities']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is InitializeResult) {
+      return capabilities == other.capabilities && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, capabilities.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class InitializedParams implements ToJsonable {
+  static InitializedParams fromJson(Map<String, dynamic> json) {
+    return new InitializedParams();
+  }
+
   Map<String, dynamic> toJson() {
     Map<String, dynamic> __result = {};
     return __result;
@@ -3334,15 +4824,32 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is InitializedParams) {
+      return true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-/// Defines whether the insert text in a completion item should be
-/// interpreted as plain text or a snippet.
+/// Defines whether the insert text in a completion item should be interpreted
+/// as plain text or a snippet.
 class InsertTextFormat {
   const InsertTextFormat._(this._value);
   const InsertTextFormat.fromJson(this._value);
 
-  final Object _value;
+  final num _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
@@ -3353,17 +4860,15 @@
     return false;
   }
 
-  /// The primary text to be inserted is treated as a plain
-  /// string.
+  /// The primary text to be inserted is treated as a plain string.
   static const PlainText = const InsertTextFormat._(1);
 
   /// The primary text to be inserted is treated as a snippet.
   ///
-  /// A snippet can define tab stops and placeholders with `$1`,
-  /// `$2` and `${3:foo}`. `$0` defines the final tab stop, it
-  /// defaults to the end of the snippet. Placeholders with
-  /// equal identifiers are linked, that is typing in one will
-  /// update others too.
+  /// A snippet can define tab stops and placeholders with `$1`, `$2` and
+  /// `${3:foo}`. `$0` defines the final tab stop, it defaults to the end of the
+  /// snippet. Placeholders with equal identifiers are linked, that is typing in
+  /// one will update others too.
   static const Snippet = const InsertTextFormat._(2);
 
   Object toJson() => _value;
@@ -3386,10 +4891,9 @@
       throw 'range is required but was not provided';
     }
   }
-  factory Location.fromJson(Map<String, dynamic> json) {
+  static Location fromJson(Map<String, dynamic> json) {
     final uri = json['uri'];
-    final range =
-        json['range'] != null ? new Range.fromJson(json['range']) : null;
+    final range = json['range'] != null ? Range.fromJson(json['range']) : null;
     return new Location(uri, range);
   }
 
@@ -3410,6 +4914,25 @@
         obj.containsKey('range') &&
         Range.canParse(obj['range']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is Location) {
+      return uri == other.uri && range == other.range && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, uri.hashCode);
+    hash = JenkinsSmiHash.combine(hash, range.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class LogMessageParams implements ToJsonable {
@@ -3421,9 +4944,9 @@
       throw 'message is required but was not provided';
     }
   }
-  factory LogMessageParams.fromJson(Map<String, dynamic> json) {
+  static LogMessageParams fromJson(Map<String, dynamic> json) {
     final type =
-        json['type'] != null ? new MessageType.fromJson(json['type']) : null;
+        json['type'] != null ? MessageType.fromJson(json['type']) : null;
     final message = json['message'];
     return new LogMessageParams(type, message);
   }
@@ -3449,55 +4972,37 @@
         obj.containsKey('message') &&
         obj['message'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is LogMessageParams) {
+      return type == other.type && message == other.message && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, type.hashCode);
+    hash = JenkinsSmiHash.combine(hash, message.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-class MarkedString implements ToJsonable {
-  MarkedString(this.language, this.value) {
-    if (language == null) {
-      throw 'language is required but was not provided';
-    }
-    if (value == null) {
-      throw 'value is required but was not provided';
-    }
-  }
-  factory MarkedString.fromJson(Map<String, dynamic> json) {
-    final language = json['language'];
-    final value = json['value'];
-    return new MarkedString(language, value);
-  }
-
-  final String language;
-  final String value;
-
-  Map<String, dynamic> toJson() {
-    Map<String, dynamic> __result = {};
-    __result['language'] =
-        language ?? (throw 'language is required but was not set');
-    __result['value'] = value ?? (throw 'value is required but was not set');
-    return __result;
-  }
-
-  static bool canParse(Object obj) {
-    return obj is Map<String, dynamic> &&
-        obj.containsKey('language') &&
-        obj['language'] is String &&
-        obj.containsKey('value') &&
-        obj['value'] is String;
-  }
-}
-
-/// A `MarkupContent` literal represents a string value which
-/// content is interpreted base on its kind flag. Currently the
-/// protocol supports `plaintext` and `markdown` as markup
-/// kinds.
+/// A `MarkupContent` literal represents a string value which content is
+/// interpreted base on its kind flag. Currently the protocol supports
+/// `plaintext` and `markdown` as markup kinds.
 ///
-/// If the kind is `markdown` then the value can contain fenced
-/// code blocks like in GitHub issues. See
+/// If the kind is `markdown` then the value can contain fenced code blocks like
+/// in GitHub issues. See
 /// https://help.github.com/articles/creating-and-highlighting-code-blocks/#syntax-highlighting
 ///
-/// Here is an example how such a string can be constructed
-/// using JavaScript / TypeScript: ```ts let markdown:
-/// MarkdownContent = {
+/// Here is an example how such a string can be constructed using JavaScript /
+/// TypeScript: ```ts let markdown: MarkdownContent = {
 ///
 /// kind: MarkupKind.Markdown,
 /// 	value: [
@@ -3508,9 +5013,8 @@
 /// 		'```'
 /// 	].join('\n') }; ```
 ///
-/// *Please Note* that clients might sanitize the return
-/// markdown. A client could decide to remove HTML from the
-/// markdown to avoid script execution.
+/// *Please Note* that clients might sanitize the return markdown. A client
+/// could decide to remove HTML from the markdown to avoid script execution.
 class MarkupContent implements ToJsonable {
   MarkupContent(this.kind, this.value) {
     if (kind == null) {
@@ -3520,9 +5024,9 @@
       throw 'value is required but was not provided';
     }
   }
-  factory MarkupContent.fromJson(Map<String, dynamic> json) {
+  static MarkupContent fromJson(Map<String, dynamic> json) {
     final kind =
-        json['kind'] != null ? new MarkupKind.fromJson(json['kind']) : null;
+        json['kind'] != null ? MarkupKind.fromJson(json['kind']) : null;
     final value = json['value'];
     return new MarkupContent(kind, value);
   }
@@ -3543,38 +5047,56 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic> &&
         obj.containsKey('kind') &&
-        MarkupKind.canParse(obj['kind']) &&
+        obj['kind'] is String &&
         obj.containsKey('value') &&
         obj['value'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is MarkupContent) {
+      return kind == other.kind && value == other.value && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, kind.hashCode);
+    hash = JenkinsSmiHash.combine(hash, value.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-/// Describes the content type that a client supports in various
-/// result literals like `Hover`, `ParameterInfo` or
-/// `CompletionItem`.
+/// Describes the content type that a client supports in various result literals
+/// like `Hover`, `ParameterInfo` or `CompletionItem`.
 ///
-/// Please note that `MarkupKinds` must not start with a `$`.
-/// This kinds are reserved for internal usage.
+/// Please note that `MarkupKinds` must not start with a `$`. This kinds are
+/// reserved for internal usage.
 class MarkupKind {
   const MarkupKind._(this._value);
   const MarkupKind.fromJson(this._value);
 
-  final Object _value;
+  final String _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
-      case 'plaintext':
-      case 'markdown':
+      case r'plaintext':
+      case r'markdown':
         return true;
     }
     return false;
   }
 
   /// Plain text is supported as a content format
-  static const PlainText = const MarkupKind._('plaintext');
+  static const PlainText = const MarkupKind._(r'plaintext');
 
   /// Markdown is supported as a content format
-  static const Markdown = const MarkupKind._('markdown');
+  static const Markdown = const MarkupKind._(r'markdown');
 
   Object toJson() => _value;
 
@@ -3593,7 +5115,7 @@
       throw 'jsonrpc is required but was not provided';
     }
   }
-  factory Message.fromJson(Map<String, dynamic> json) {
+  static Message fromJson(Map<String, dynamic> json) {
     final jsonrpc = json['jsonrpc'];
     return new Message(jsonrpc);
   }
@@ -3612,6 +5134,24 @@
         obj.containsKey('jsonrpc') &&
         obj['jsonrpc'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is Message) {
+      return jsonrpc == other.jsonrpc && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, jsonrpc.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class MessageActionItem implements ToJsonable {
@@ -3620,7 +5160,7 @@
       throw 'title is required but was not provided';
     }
   }
-  factory MessageActionItem.fromJson(Map<String, dynamic> json) {
+  static MessageActionItem fromJson(Map<String, dynamic> json) {
     final title = json['title'];
     return new MessageActionItem(title);
   }
@@ -3639,13 +5179,31 @@
         obj.containsKey('title') &&
         obj['title'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is MessageActionItem) {
+      return title == other.title && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, title.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class MessageType {
   const MessageType._(this._value);
   const MessageType.fromJson(this._value);
 
-  final Object _value;
+  final num _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
@@ -3681,7 +5239,214 @@
   bool operator ==(o) => o is MessageType && o._value == _value;
 }
 
-class NotificationMessage implements Message, ToJsonable {
+/// Valid LSP methods known at the time of code generation from the spec.
+class Method {
+  const Method._(this._value);
+  const Method.fromJson(this._value);
+
+  final String _value;
+
+  static bool canParse(Object obj) {
+    switch (obj) {
+      case r'$/cancelRequest':
+      case r'initialize':
+      case r'initialized':
+      case r'shutdown':
+      case r'exit':
+      case r'window/showMessage':
+      case r'window/showMessageRequest':
+      case r'window/logMessage':
+      case r'telemetry/event':
+      case r'client/registerCapability':
+      case r'client/unregisterCapability':
+      case r'workspace/didChangeWatchedFiles':
+      case r'workspace/symbol':
+      case r'workspace/executeCommand':
+      case r'workspace/applyEdit':
+      case r'textDocument/didOpen':
+      case r'textDocument/didChange':
+      case r'textDocument/willSave':
+      case r'textDocument/willSaveWaitUntil':
+      case r'textDocument/didClose':
+      case r'textDocument/publishDiagnostics':
+      case r'textDocument/completion':
+      case r'completionItem/resolve':
+      case r'textDocument/hover':
+      case r'textDocument/signatureHelp':
+      case r'textDocument/definition':
+      case r'textDocument/typeDefinition':
+      case r'textDocument/implementation':
+      case r'textDocument/references':
+      case r'textDocument/documentHighlight':
+      case r'textDocument/documentSymbol':
+      case r'textDocument/codeAction':
+      case r'textDocument/codeLens':
+      case r'codeLens/resolve':
+      case r'textDocument/documentLink':
+      case r'documentLink/resolve':
+      case r'textDocument/formatting':
+      case r'textDocument/onTypeFormatting':
+      case r'textDocument/rename':
+      case r'textDocument/prepareRename':
+        return true;
+    }
+    return false;
+  }
+
+  /// Constant for the '$/cancelRequest' method.
+  static const cancelRequest = const Method._(r'$/cancelRequest');
+
+  /// Constant for the 'initialize' method.
+  static const initialize = const Method._(r'initialize');
+
+  /// Constant for the 'initialized' method.
+  static const initialized = const Method._(r'initialized');
+
+  /// Constant for the 'shutdown' method.
+  static const shutdown = const Method._(r'shutdown');
+
+  /// Constant for the 'exit' method.
+  static const exit = const Method._(r'exit');
+
+  /// Constant for the 'window/showMessage' method.
+  static const window_showMessage = const Method._(r'window/showMessage');
+
+  /// Constant for the 'window/showMessageRequest' method.
+  static const window_showMessageRequest =
+      const Method._(r'window/showMessageRequest');
+
+  /// Constant for the 'window/logMessage' method.
+  static const window_logMessage = const Method._(r'window/logMessage');
+
+  /// Constant for the 'telemetry/event' method.
+  static const telemetry_event = const Method._(r'telemetry/event');
+
+  /// Constant for the 'client/registerCapability' method.
+  static const client_registerCapability =
+      const Method._(r'client/registerCapability');
+
+  /// Constant for the 'client/unregisterCapability' method.
+  static const client_unregisterCapability =
+      const Method._(r'client/unregisterCapability');
+
+  /// Constant for the 'workspace/didChangeWatchedFiles' method.
+  static const workspace_didChangeWatchedFiles =
+      const Method._(r'workspace/didChangeWatchedFiles');
+
+  /// Constant for the 'workspace/symbol' method.
+  static const workspace_symbol = const Method._(r'workspace/symbol');
+
+  /// Constant for the 'workspace/executeCommand' method.
+  static const workspace_executeCommand =
+      const Method._(r'workspace/executeCommand');
+
+  /// Constant for the 'workspace/applyEdit' method.
+  static const workspace_applyEdit = const Method._(r'workspace/applyEdit');
+
+  /// Constant for the 'textDocument/didOpen' method.
+  static const textDocument_didOpen = const Method._(r'textDocument/didOpen');
+
+  /// Constant for the 'textDocument/didChange' method.
+  static const textDocument_didChange =
+      const Method._(r'textDocument/didChange');
+
+  /// Constant for the 'textDocument/willSave' method.
+  static const textDocument_willSave = const Method._(r'textDocument/willSave');
+
+  /// Constant for the 'textDocument/willSaveWaitUntil' method.
+  static const textDocument_willSaveWaitUntil =
+      const Method._(r'textDocument/willSaveWaitUntil');
+
+  /// Constant for the 'textDocument/didClose' method.
+  static const textDocument_didClose = const Method._(r'textDocument/didClose');
+
+  /// Constant for the 'textDocument/publishDiagnostics' method.
+  static const textDocument_publishDiagnostics =
+      const Method._(r'textDocument/publishDiagnostics');
+
+  /// Constant for the 'textDocument/completion' method.
+  static const textDocument_completion =
+      const Method._(r'textDocument/completion');
+
+  /// Constant for the 'completionItem/resolve' method.
+  static const completionItem_resolve =
+      const Method._(r'completionItem/resolve');
+
+  /// Constant for the 'textDocument/hover' method.
+  static const textDocument_hover = const Method._(r'textDocument/hover');
+
+  /// Constant for the 'textDocument/signatureHelp' method.
+  static const textDocument_signatureHelp =
+      const Method._(r'textDocument/signatureHelp');
+
+  /// Constant for the 'textDocument/definition' method.
+  static const textDocument_definition =
+      const Method._(r'textDocument/definition');
+
+  /// Constant for the 'textDocument/typeDefinition' method.
+  static const textDocument_typeDefinition =
+      const Method._(r'textDocument/typeDefinition');
+
+  /// Constant for the 'textDocument/implementation' method.
+  static const textDocument_implementation =
+      const Method._(r'textDocument/implementation');
+
+  /// Constant for the 'textDocument/references' method.
+  static const textDocument_references =
+      const Method._(r'textDocument/references');
+
+  /// Constant for the 'textDocument/documentHighlight' method.
+  static const textDocument_documentHighlight =
+      const Method._(r'textDocument/documentHighlight');
+
+  /// Constant for the 'textDocument/documentSymbol' method.
+  static const textDocument_documentSymbol =
+      const Method._(r'textDocument/documentSymbol');
+
+  /// Constant for the 'textDocument/codeAction' method.
+  static const textDocument_codeAction =
+      const Method._(r'textDocument/codeAction');
+
+  /// Constant for the 'textDocument/codeLens' method.
+  static const textDocument_codeLens = const Method._(r'textDocument/codeLens');
+
+  /// Constant for the 'codeLens/resolve' method.
+  static const codeLens_resolve = const Method._(r'codeLens/resolve');
+
+  /// Constant for the 'textDocument/documentLink' method.
+  static const textDocument_documentLink =
+      const Method._(r'textDocument/documentLink');
+
+  /// Constant for the 'documentLink/resolve' method.
+  static const documentLink_resolve = const Method._(r'documentLink/resolve');
+
+  /// Constant for the 'textDocument/formatting' method.
+  static const textDocument_formatting =
+      const Method._(r'textDocument/formatting');
+
+  /// Constant for the 'textDocument/onTypeFormatting' method.
+  static const textDocument_onTypeFormatting =
+      const Method._(r'textDocument/onTypeFormatting');
+
+  /// Constant for the 'textDocument/rename' method.
+  static const textDocument_rename = const Method._(r'textDocument/rename');
+
+  /// Constant for the 'textDocument/prepareRename' method.
+  static const textDocument_prepareRename =
+      const Method._(r'textDocument/prepareRename');
+
+  Object toJson() => _value;
+
+  @override
+  String toString() => _value.toString();
+
+  @override
+  get hashCode => _value.hashCode;
+
+  bool operator ==(o) => o is Method && o._value == _value;
+}
+
+class NotificationMessage implements Message, IncomingMessage, ToJsonable {
   NotificationMessage(this.method, this.params, this.jsonrpc) {
     if (method == null) {
       throw 'method is required but was not provided';
@@ -3690,14 +5455,10 @@
       throw 'jsonrpc is required but was not provided';
     }
   }
-  factory NotificationMessage.fromJson(Map<String, dynamic> json) {
-    final method = json['method'];
-    final params = (json['params'] is List &&
-            (json['params'].length == 0 ||
-                json['params'].every((item) => true)))
-        ? new Either2<List<dynamic>, dynamic>.t1(
-            json['params']?.map((item) => item)?.cast<dynamic>()?.toList())
-        : (new Either2<List<dynamic>, dynamic>.t2(json['params']));
+  static NotificationMessage fromJson(Map<String, dynamic> json) {
+    final method =
+        json['method'] != null ? Method.fromJson(json['method']) : null;
+    final params = json['params'];
     final jsonrpc = json['jsonrpc'];
     return new NotificationMessage(method, params, jsonrpc);
   }
@@ -3705,10 +5466,10 @@
   final String jsonrpc;
 
   /// The method to be invoked.
-  final String method;
+  final Method method;
 
   /// The notification's params.
-  final Either2<List<dynamic>, dynamic> params;
+  final dynamic params;
 
   Map<String, dynamic> toJson() {
     Map<String, dynamic> __result = {};
@@ -3724,35 +5485,60 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic> &&
         obj.containsKey('method') &&
-        obj['method'] is String &&
+        Method.canParse(obj['method']) &&
         obj.containsKey('jsonrpc') &&
         obj['jsonrpc'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is NotificationMessage) {
+      return method == other.method &&
+          params == other.params &&
+          jsonrpc == other.jsonrpc &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, method.hashCode);
+    hash = JenkinsSmiHash.combine(hash, params.hashCode);
+    hash = JenkinsSmiHash.combine(hash, jsonrpc.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-/// Represents a parameter of a callable-signature. A
-/// parameter can have a label and a doc-comment.
+/// Represents a parameter of a callable-signature. A parameter can have a label
+/// and a doc-comment.
 class ParameterInformation implements ToJsonable {
   ParameterInformation(this.label, this.documentation) {
     if (label == null) {
       throw 'label is required but was not provided';
     }
   }
-  factory ParameterInformation.fromJson(Map<String, dynamic> json) {
+  static ParameterInformation fromJson(Map<String, dynamic> json) {
     final label = json['label'];
     final documentation = json['documentation'] is String
         ? new Either2<String, MarkupContent>.t1(json['documentation'])
         : (MarkupContent.canParse(json['documentation'])
             ? new Either2<String, MarkupContent>.t2(
                 json['documentation'] != null
-                    ? new MarkupContent.fromJson(json['documentation'])
+                    ? MarkupContent.fromJson(json['documentation'])
                     : null)
-            : (throw '''${json['documentation']} was not one of (string, MarkupContent)'''));
+            : (json['documentation'] == null
+                ? null
+                : (throw '''${json['documentation']} was not one of (String, MarkupContent)''')));
     return new ParameterInformation(label, documentation);
   }
 
-  /// The human-readable doc-comment of this parameter. Will
-  /// be shown in the UI but can be omitted.
+  /// The human-readable doc-comment of this parameter. Will be shown in the UI
+  /// but can be omitted.
   final Either2<String, MarkupContent> documentation;
 
   /// The label of this parameter. Will be shown in the UI.
@@ -3772,6 +5558,27 @@
         obj.containsKey('label') &&
         obj['label'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ParameterInformation) {
+      return label == other.label &&
+          documentation == other.documentation &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, label.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentation.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class Position implements ToJsonable {
@@ -3783,19 +5590,18 @@
       throw 'character is required but was not provided';
     }
   }
-  factory Position.fromJson(Map<String, dynamic> json) {
+  static Position fromJson(Map<String, dynamic> json) {
     final line = json['line'];
     final character = json['character'];
     return new Position(line, character);
   }
 
-  /// Character offset on a line in a document (zero-based).
-  /// Assuming that the line is represented as a string, the
-  /// `character` value represents the gap between the
-  /// `character` and `character + 1`.
+  /// Character offset on a line in a document (zero-based). Assuming that the
+  /// line is represented as a string, the `character` value represents the gap
+  /// between the `character` and `character + 1`.
   ///
-  /// If the character value is greater than the line length
-  /// it defaults back to the line length.
+  /// If the character value is greater than the line length it defaults back to
+  /// the line length.
   final num character;
 
   /// Line position in a document (zero-based).
@@ -3816,6 +5622,25 @@
         obj.containsKey('character') &&
         obj['character'] is num;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is Position) {
+      return line == other.line && character == other.character && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, line.hashCode);
+    hash = JenkinsSmiHash.combine(hash, character.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class PublishDiagnosticsParams implements ToJsonable {
@@ -3827,10 +5652,10 @@
       throw 'diagnostics is required but was not provided';
     }
   }
-  factory PublishDiagnosticsParams.fromJson(Map<String, dynamic> json) {
+  static PublishDiagnosticsParams fromJson(Map<String, dynamic> json) {
     final uri = json['uri'];
     final diagnostics = json['diagnostics']
-        ?.map((item) => item != null ? new Diagnostic.fromJson(item) : null)
+        ?.map((item) => item != null ? Diagnostic.fromJson(item) : null)
         ?.cast<Diagnostic>()
         ?.toList();
     return new PublishDiagnosticsParams(uri, diagnostics);
@@ -3859,6 +5684,28 @@
             (obj['diagnostics'].length == 0 ||
                 obj['diagnostics'].every((item) => Diagnostic.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is PublishDiagnosticsParams) {
+      return uri == other.uri &&
+          listEqual(diagnostics, other.diagnostics,
+              (Diagnostic a, Diagnostic b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, uri.hashCode);
+    hash = JenkinsSmiHash.combine(hash, diagnostics.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class Range implements ToJsonable {
@@ -3870,10 +5717,10 @@
       throw 'end is required but was not provided';
     }
   }
-  factory Range.fromJson(Map<String, dynamic> json) {
+  static Range fromJson(Map<String, dynamic> json) {
     final start =
-        json['start'] != null ? new Position.fromJson(json['start']) : null;
-    final end = json['end'] != null ? new Position.fromJson(json['end']) : null;
+        json['start'] != null ? Position.fromJson(json['start']) : null;
+    final end = json['end'] != null ? Position.fromJson(json['end']) : null;
     return new Range(start, end);
   }
 
@@ -3897,6 +5744,25 @@
         obj.containsKey('end') &&
         Position.canParse(obj['end']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is Range) {
+      return start == other.start && end == other.end && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, start.hashCode);
+    hash = JenkinsSmiHash.combine(hash, end.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ReferenceContext implements ToJsonable {
@@ -3905,7 +5771,7 @@
       throw 'includeDeclaration is required but was not provided';
     }
   }
-  factory ReferenceContext.fromJson(Map<String, dynamic> json) {
+  static ReferenceContext fromJson(Map<String, dynamic> json) {
     final includeDeclaration = json['includeDeclaration'];
     return new ReferenceContext(includeDeclaration);
   }
@@ -3925,6 +5791,24 @@
         obj.containsKey('includeDeclaration') &&
         obj['includeDeclaration'] is bool;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ReferenceContext) {
+      return includeDeclaration == other.includeDeclaration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, includeDeclaration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ReferenceParams implements TextDocumentPositionParams, ToJsonable {
@@ -3939,16 +5823,15 @@
       throw 'position is required but was not provided';
     }
   }
-  factory ReferenceParams.fromJson(Map<String, dynamic> json) {
+  static ReferenceParams fromJson(Map<String, dynamic> json) {
     final context = json['context'] != null
-        ? new ReferenceContext.fromJson(json['context'])
+        ? ReferenceContext.fromJson(json['context'])
         : null;
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
-    final position = json['position'] != null
-        ? new Position.fromJson(json['position'])
-        : null;
+    final position =
+        json['position'] != null ? Position.fromJson(json['position']) : null;
     return new ReferenceParams(context, textDocument, position);
   }
 
@@ -3980,6 +5863,29 @@
         obj.containsKey('position') &&
         Position.canParse(obj['position']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ReferenceParams) {
+      return context == other.context &&
+          textDocument == other.textDocument &&
+          position == other.position &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, context.hashCode);
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, position.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// General parameters to register for a capability.
@@ -3992,15 +5898,15 @@
       throw 'method is required but was not provided';
     }
   }
-  factory Registration.fromJson(Map<String, dynamic> json) {
+  static Registration fromJson(Map<String, dynamic> json) {
     final id = json['id'];
     final method = json['method'];
     final registerOptions = json['registerOptions'];
     return new Registration(id, method, registerOptions);
   }
 
-  /// The id used to register the request. The id can be
-  /// used to deregister the request again.
+  /// The id used to register the request. The id can be used to deregister the
+  /// request again.
   final String id;
 
   /// The method / capability to register for.
@@ -4026,6 +5932,29 @@
         obj.containsKey('method') &&
         obj['method'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is Registration) {
+      return id == other.id &&
+          method == other.method &&
+          registerOptions == other.registerOptions &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, id.hashCode);
+    hash = JenkinsSmiHash.combine(hash, method.hashCode);
+    hash = JenkinsSmiHash.combine(hash, registerOptions.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class RegistrationParams implements ToJsonable {
@@ -4034,9 +5963,9 @@
       throw 'registrations is required but was not provided';
     }
   }
-  factory RegistrationParams.fromJson(Map<String, dynamic> json) {
+  static RegistrationParams fromJson(Map<String, dynamic> json) {
     final registrations = json['registrations']
-        ?.map((item) => item != null ? new Registration.fromJson(item) : null)
+        ?.map((item) => item != null ? Registration.fromJson(item) : null)
         ?.cast<Registration>()
         ?.toList();
     return new RegistrationParams(registrations);
@@ -4059,11 +5988,34 @@
                 obj['registrations']
                     .every((item) => Registration.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is RegistrationParams) {
+      return listEqual(registrations, other.registrations,
+              (Registration a, Registration b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, registrations.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Rename file operation
-class RenameFile implements FileOperation, ToJsonable {
-  RenameFile(this.oldUri, this.newUri, this.options) {
+class RenameFile implements ToJsonable {
+  RenameFile(this.kind, this.oldUri, this.newUri, this.options) {
+    if (kind == null) {
+      throw 'kind is required but was not provided';
+    }
     if (oldUri == null) {
       throw 'oldUri is required but was not provided';
     }
@@ -4071,15 +6023,19 @@
       throw 'newUri is required but was not provided';
     }
   }
-  factory RenameFile.fromJson(Map<String, dynamic> json) {
+  static RenameFile fromJson(Map<String, dynamic> json) {
+    final kind = json['kind'];
     final oldUri = json['oldUri'];
     final newUri = json['newUri'];
     final options = json['options'] != null
-        ? new RenameFileOptions.fromJson(json['options'])
+        ? RenameFileOptions.fromJson(json['options'])
         : null;
-    return new RenameFile(oldUri, newUri, options);
+    return new RenameFile(kind, oldUri, newUri, options);
   }
 
+  /// A rename
+  final String kind;
+
   /// The new location.
   final String newUri;
 
@@ -4091,6 +6047,7 @@
 
   Map<String, dynamic> toJson() {
     Map<String, dynamic> __result = {};
+    __result['kind'] = kind ?? (throw 'kind is required but was not set');
     __result['oldUri'] = oldUri ?? (throw 'oldUri is required but was not set');
     __result['newUri'] = newUri ?? (throw 'newUri is required but was not set');
     if (options != null) {
@@ -4101,17 +6058,44 @@
 
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic> &&
+        obj.containsKey('kind') &&
+        obj['kind'] is String &&
         obj.containsKey('oldUri') &&
         obj['oldUri'] is String &&
         obj.containsKey('newUri') &&
         obj['newUri'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is RenameFile) {
+      return kind == other.kind &&
+          oldUri == other.oldUri &&
+          newUri == other.newUri &&
+          options == other.options &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, kind.hashCode);
+    hash = JenkinsSmiHash.combine(hash, oldUri.hashCode);
+    hash = JenkinsSmiHash.combine(hash, newUri.hashCode);
+    hash = JenkinsSmiHash.combine(hash, options.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Rename file options
 class RenameFileOptions implements ToJsonable {
   RenameFileOptions(this.overwrite, this.ignoreIfExists);
-  factory RenameFileOptions.fromJson(Map<String, dynamic> json) {
+  static RenameFileOptions fromJson(Map<String, dynamic> json) {
     final overwrite = json['overwrite'];
     final ignoreIfExists = json['ignoreIfExists'];
     return new RenameFileOptions(overwrite, ignoreIfExists);
@@ -4120,8 +6104,7 @@
   /// Ignores if target exists.
   final bool ignoreIfExists;
 
-  /// Overwrite target if existing. Overwrite wins over
-  /// `ignoreIfExists`
+  /// Overwrite target if existing. Overwrite wins over `ignoreIfExists`
   final bool overwrite;
 
   Map<String, dynamic> toJson() {
@@ -4138,18 +6121,38 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is RenameFileOptions) {
+      return overwrite == other.overwrite &&
+          ignoreIfExists == other.ignoreIfExists &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, overwrite.hashCode);
+    hash = JenkinsSmiHash.combine(hash, ignoreIfExists.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Rename options
 class RenameOptions implements ToJsonable {
   RenameOptions(this.prepareProvider);
-  factory RenameOptions.fromJson(Map<String, dynamic> json) {
+  static RenameOptions fromJson(Map<String, dynamic> json) {
     final prepareProvider = json['prepareProvider'];
     return new RenameOptions(prepareProvider);
   }
 
-  /// Renames should be checked and tested before being
-  /// executed.
+  /// Renames should be checked and tested before being executed.
   final bool prepareProvider;
 
   Map<String, dynamic> toJson() {
@@ -4163,6 +6166,24 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is RenameOptions) {
+      return prepareProvider == other.prepareProvider && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, prepareProvider.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class RenameParams implements ToJsonable {
@@ -4177,20 +6198,18 @@
       throw 'newName is required but was not provided';
     }
   }
-  factory RenameParams.fromJson(Map<String, dynamic> json) {
+  static RenameParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
-    final position = json['position'] != null
-        ? new Position.fromJson(json['position'])
-        : null;
+    final position =
+        json['position'] != null ? Position.fromJson(json['position']) : null;
     final newName = json['newName'];
     return new RenameParams(textDocument, position, newName);
   }
 
-  /// The new name of the symbol. If the given name is not
-  /// valid the request must return a [ResponseError] with
-  /// an appropriate message set.
+  /// The new name of the symbol. If the given name is not valid the request
+  /// must return a [ResponseError] with an appropriate message set.
   final String newName;
 
   /// The position at which this request was sent.
@@ -4219,27 +6238,48 @@
         obj.containsKey('newName') &&
         obj['newName'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is RenameParams) {
+      return textDocument == other.textDocument &&
+          position == other.position &&
+          newName == other.newName &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, position.hashCode);
+    hash = JenkinsSmiHash.combine(hash, newName.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class RenameRegistrationOptions
     implements TextDocumentRegistrationOptions, ToJsonable {
   RenameRegistrationOptions(this.prepareProvider, this.documentSelector);
-  factory RenameRegistrationOptions.fromJson(Map<String, dynamic> json) {
+  static RenameRegistrationOptions fromJson(Map<String, dynamic> json) {
     final prepareProvider = json['prepareProvider'];
     final documentSelector = json['documentSelector']
-        ?.map((item) => item != null ? new DocumentFilter.fromJson(item) : null)
+        ?.map((item) => item != null ? DocumentFilter.fromJson(item) : null)
         ?.cast<DocumentFilter>()
         ?.toList();
     return new RenameRegistrationOptions(prepareProvider, documentSelector);
   }
 
-  /// A document selector to identify the scope of the
-  /// registration. If set to null the document selector
-  /// provided on the client side will be used.
+  /// A document selector to identify the scope of the registration. If set to
+  /// null the document selector provided on the client side will be used.
   final List<DocumentFilter> documentSelector;
 
-  /// Renames should be checked and tested for validity
-  /// before being executed.
+  /// Renames should be checked and tested for validity before being executed.
   final bool prepareProvider;
 
   Map<String, dynamic> toJson() {
@@ -4259,9 +6299,30 @@
                 obj['documentSelector']
                     .every((item) => DocumentFilter.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is RenameRegistrationOptions) {
+      return prepareProvider == other.prepareProvider &&
+          documentSelector == other.documentSelector &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, prepareProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentSelector.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-class RequestMessage implements Message, ToJsonable {
+class RequestMessage implements Message, IncomingMessage, ToJsonable {
   RequestMessage(this.id, this.method, this.params, this.jsonrpc) {
     if (id == null) {
       throw 'id is required but was not provided';
@@ -4273,19 +6334,15 @@
       throw 'jsonrpc is required but was not provided';
     }
   }
-  factory RequestMessage.fromJson(Map<String, dynamic> json) {
+  static RequestMessage fromJson(Map<String, dynamic> json) {
     final id = json['id'] is num
         ? new Either2<num, String>.t1(json['id'])
         : (json['id'] is String
             ? new Either2<num, String>.t2(json['id'])
-            : (throw '''${json['id']} was not one of (number, string)'''));
-    final method = json['method'];
-    final params = (json['params'] is List &&
-            (json['params'].length == 0 ||
-                json['params'].every((item) => true)))
-        ? new Either2<List<dynamic>, dynamic>.t1(
-            json['params']?.map((item) => item)?.cast<dynamic>()?.toList())
-        : (new Either2<List<dynamic>, dynamic>.t2(json['params']));
+            : (throw '''${json['id']} was not one of (num, String)'''));
+    final method =
+        json['method'] != null ? Method.fromJson(json['method']) : null;
+    final params = json['params'];
     final jsonrpc = json['jsonrpc'];
     return new RequestMessage(id, method, params, jsonrpc);
   }
@@ -4295,10 +6352,10 @@
   final String jsonrpc;
 
   /// The method to be invoked.
-  final String method;
+  final Method method;
 
   /// The method's params.
-  final Either2<List<dynamic>, dynamic> params;
+  final dynamic params;
 
   Map<String, dynamic> toJson() {
     Map<String, dynamic> __result = {};
@@ -4317,17 +6374,42 @@
         obj.containsKey('id') &&
         (obj['id'] is num || obj['id'] is String) &&
         obj.containsKey('method') &&
-        obj['method'] is String &&
+        Method.canParse(obj['method']) &&
         obj.containsKey('jsonrpc') &&
         obj['jsonrpc'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is RequestMessage) {
+      return id == other.id &&
+          method == other.method &&
+          params == other.params &&
+          jsonrpc == other.jsonrpc &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, id.hashCode);
+    hash = JenkinsSmiHash.combine(hash, method.hashCode);
+    hash = JenkinsSmiHash.combine(hash, params.hashCode);
+    hash = JenkinsSmiHash.combine(hash, jsonrpc.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ResourceOperationKind {
   const ResourceOperationKind._(this._value);
   const ResourceOperationKind.fromJson(this._value);
 
-  final Object _value;
+  final String _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
@@ -4368,19 +6450,19 @@
       throw 'message is required but was not provided';
     }
   }
-  factory ResponseError.fromJson(Map<String, dynamic> json) {
-    final code = json['code'];
+  static ResponseError<D> fromJson<D>(Map<String, dynamic> json) {
+    final code =
+        json['code'] != null ? ErrorCodes.fromJson(json['code']) : null;
     final message = json['message'];
     final data = json['data'];
     return new ResponseError<D>(code, message, data);
   }
 
   /// A number indicating the error type that occurred.
-  final num code;
+  final ErrorCodes code;
 
-  /// A Primitive or Structured value that contains
-  /// additional information about the error. Can be
-  /// omitted.
+  /// A Primitive or Structured value that contains additional information about
+  /// the error. Can be omitted.
   final D data;
 
   /// A string providing a short description of the error.
@@ -4400,10 +6482,33 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic> &&
         obj.containsKey('code') &&
-        obj['code'] is num &&
+        ErrorCodes.canParse(obj['code']) &&
         obj.containsKey('message') &&
         obj['message'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ResponseError) {
+      return code == other.code &&
+          message == other.message &&
+          data == other.data &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, code.hashCode);
+    hash = JenkinsSmiHash.combine(hash, message.hashCode);
+    hash = JenkinsSmiHash.combine(hash, data.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ResponseMessage implements Message, ToJsonable {
@@ -4412,14 +6517,18 @@
       throw 'jsonrpc is required but was not provided';
     }
   }
-  factory ResponseMessage.fromJson(Map<String, dynamic> json) {
+  static ResponseMessage fromJson(Map<String, dynamic> json) {
     final id = json['id'] is num
         ? new Either2<num, String>.t1(json['id'])
         : (json['id'] is String
             ? new Either2<num, String>.t2(json['id'])
-            : (throw '''${json['id']} was not one of (number, string)'''));
+            : (json['id'] == null
+                ? null
+                : (throw '''${json['id']} was not one of (num, String)''')));
     final result = json['result'];
-    final error = json['error'];
+    final error = json['error'] != null
+        ? ResponseError.fromJson<dynamic>(json['error'])
+        : null;
     final jsonrpc = json['jsonrpc'];
     return new ResponseMessage(id, result, error, jsonrpc);
   }
@@ -4431,8 +6540,7 @@
   final Either2<num, String> id;
   final String jsonrpc;
 
-  /// The result of a request. This can be omitted in the
-  /// case of an error.
+  /// The result of a request. This can be omitted in the case of an error.
   final dynamic result;
 
   Map<String, dynamic> toJson() {
@@ -4456,18 +6564,42 @@
         obj.containsKey('jsonrpc') &&
         obj['jsonrpc'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ResponseMessage) {
+      return id == other.id &&
+          result == other.result &&
+          error == other.error &&
+          jsonrpc == other.jsonrpc &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, id.hashCode);
+    hash = JenkinsSmiHash.combine(hash, result.hashCode);
+    hash = JenkinsSmiHash.combine(hash, error.hashCode);
+    hash = JenkinsSmiHash.combine(hash, jsonrpc.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Save options.
 class SaveOptions implements ToJsonable {
   SaveOptions(this.includeText);
-  factory SaveOptions.fromJson(Map<String, dynamic> json) {
+  static SaveOptions fromJson(Map<String, dynamic> json) {
     final includeText = json['includeText'];
     return new SaveOptions(includeText);
   }
 
-  /// The client is supposed to include the content on
-  /// save.
+  /// The client is supposed to include the content on save.
   final bool includeText;
 
   Map<String, dynamic> toJson() {
@@ -4481,6 +6613,24 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is SaveOptions) {
+      return includeText == other.includeText && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, includeText.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ServerCapabilities implements ToJsonable {
@@ -4490,6 +6640,8 @@
       this.completionProvider,
       this.signatureHelpProvider,
       this.definitionProvider,
+      this.typeDefinitionProvider,
+      this.implementationProvider,
       this.referencesProvider,
       this.documentHighlightProvider,
       this.documentSymbolProvider,
@@ -4501,28 +6653,38 @@
       this.documentOnTypeFormattingProvider,
       this.renameProvider,
       this.documentLinkProvider,
+      this.colorProvider,
+      this.foldingRangeProvider,
       this.executeCommandProvider,
-      this.supported,
-      this.changeNotifications);
-  factory ServerCapabilities.fromJson(Map<String, dynamic> json) {
+      this.workspace,
+      this.experimental);
+  static ServerCapabilities fromJson(Map<String, dynamic> json) {
     final textDocumentSync = TextDocumentSyncOptions.canParse(
             json['textDocumentSync'])
         ? new Either2<TextDocumentSyncOptions, num>.t1(
             json['textDocumentSync'] != null
-                ? new TextDocumentSyncOptions.fromJson(json['textDocumentSync'])
+                ? TextDocumentSyncOptions.fromJson(json['textDocumentSync'])
                 : null)
         : (json['textDocumentSync'] is num
             ? new Either2<TextDocumentSyncOptions, num>.t2(
                 json['textDocumentSync'])
-            : (throw '''${json['textDocumentSync']} was not one of (TextDocumentSyncOptions, number)'''));
+            : (json['textDocumentSync'] == null
+                ? null
+                : (throw '''${json['textDocumentSync']} was not one of (TextDocumentSyncOptions, num)''')));
     final hoverProvider = json['hoverProvider'];
     final completionProvider = json['completionProvider'] != null
-        ? new CompletionOptions.fromJson(json['completionProvider'])
+        ? CompletionOptions.fromJson(json['completionProvider'])
         : null;
     final signatureHelpProvider = json['signatureHelpProvider'] != null
-        ? new SignatureHelpOptions.fromJson(json['signatureHelpProvider'])
+        ? SignatureHelpOptions.fromJson(json['signatureHelpProvider'])
         : null;
     final definitionProvider = json['definitionProvider'];
+    final typeDefinitionProvider = json['typeDefinitionProvider'] is bool
+        ? new Either2<bool, dynamic>.t1(json['typeDefinitionProvider'])
+        : (new Either2<bool, dynamic>.t2(json['typeDefinitionProvider']));
+    final implementationProvider = json['implementationProvider'] is bool
+        ? new Either2<bool, dynamic>.t1(json['implementationProvider'])
+        : (new Either2<bool, dynamic>.t2(json['implementationProvider']));
     final referencesProvider = json['referencesProvider'];
     final documentHighlightProvider = json['documentHighlightProvider'];
     final documentSymbolProvider = json['documentSymbolProvider'];
@@ -4532,45 +6694,70 @@
         : (CodeActionOptions.canParse(json['codeActionProvider'])
             ? new Either2<bool, CodeActionOptions>.t2(
                 json['codeActionProvider'] != null
-                    ? new CodeActionOptions.fromJson(json['codeActionProvider'])
+                    ? CodeActionOptions.fromJson(json['codeActionProvider'])
                     : null)
-            : (throw '''${json['codeActionProvider']} was not one of (boolean, CodeActionOptions)'''));
+            : (json['codeActionProvider'] == null
+                ? null
+                : (throw '''${json['codeActionProvider']} was not one of (bool, CodeActionOptions)''')));
     final codeLensProvider = json['codeLensProvider'] != null
-        ? new CodeLensOptions.fromJson(json['codeLensProvider'])
+        ? CodeLensOptions.fromJson(json['codeLensProvider'])
         : null;
     final documentFormattingProvider = json['documentFormattingProvider'];
     final documentRangeFormattingProvider =
         json['documentRangeFormattingProvider'];
     final documentOnTypeFormattingProvider =
         json['documentOnTypeFormattingProvider'] != null
-            ? new DocumentOnTypeFormattingOptions.fromJson(
+            ? DocumentOnTypeFormattingOptions.fromJson(
                 json['documentOnTypeFormattingProvider'])
             : null;
     final renameProvider = json['renameProvider'] is bool
         ? new Either2<bool, RenameOptions>.t1(json['renameProvider'])
         : (RenameOptions.canParse(json['renameProvider'])
             ? new Either2<bool, RenameOptions>.t2(json['renameProvider'] != null
-                ? new RenameOptions.fromJson(json['renameProvider'])
+                ? RenameOptions.fromJson(json['renameProvider'])
                 : null)
-            : (throw '''${json['renameProvider']} was not one of (boolean, RenameOptions)'''));
+            : (json['renameProvider'] == null
+                ? null
+                : (throw '''${json['renameProvider']} was not one of (bool, RenameOptions)''')));
     final documentLinkProvider = json['documentLinkProvider'] != null
-        ? new DocumentLinkOptions.fromJson(json['documentLinkProvider'])
+        ? DocumentLinkOptions.fromJson(json['documentLinkProvider'])
         : null;
+    final colorProvider = json['colorProvider'] is bool
+        ? new Either3<bool, ColorProviderOptions, dynamic>.t1(
+            json['colorProvider'])
+        : (ColorProviderOptions.canParse(json['colorProvider'])
+            ? new Either3<bool, ColorProviderOptions, dynamic>.t2(
+                json['colorProvider'] != null
+                    ? ColorProviderOptions.fromJson(json['colorProvider'])
+                    : null)
+            : (new Either3<bool, ColorProviderOptions, dynamic>.t3(
+                json['colorProvider'])));
+    final foldingRangeProvider = json['foldingRangeProvider'] is bool
+        ? new Either3<bool, FoldingRangeProviderOptions, dynamic>.t1(
+            json['foldingRangeProvider'])
+        : (FoldingRangeProviderOptions.canParse(json['foldingRangeProvider'])
+            ? new Either3<bool, FoldingRangeProviderOptions, dynamic>.t2(
+                json['foldingRangeProvider'] != null
+                    ? FoldingRangeProviderOptions.fromJson(
+                        json['foldingRangeProvider'])
+                    : null)
+            : (new Either3<bool, FoldingRangeProviderOptions, dynamic>.t3(
+                json['foldingRangeProvider'])));
     final executeCommandProvider = json['executeCommandProvider'] != null
-        ? new ExecuteCommandOptions.fromJson(json['executeCommandProvider'])
+        ? ExecuteCommandOptions.fromJson(json['executeCommandProvider'])
         : null;
-    final supported = json['supported'];
-    final changeNotifications = json['changeNotifications'] is String
-        ? new Either2<String, bool>.t1(json['changeNotifications'])
-        : (json['changeNotifications'] is bool
-            ? new Either2<String, bool>.t2(json['changeNotifications'])
-            : (throw '''${json['changeNotifications']} was not one of (string, boolean)'''));
+    final workspace = json['workspace'] != null
+        ? ServerCapabilitiesWorkspace.fromJson(json['workspace'])
+        : null;
+    final experimental = json['experimental'];
     return new ServerCapabilities(
         textDocumentSync,
         hoverProvider,
         completionProvider,
         signatureHelpProvider,
         definitionProvider,
+        typeDefinitionProvider,
+        implementationProvider,
         referencesProvider,
         documentHighlightProvider,
         documentSymbolProvider,
@@ -4582,31 +6769,26 @@
         documentOnTypeFormattingProvider,
         renameProvider,
         documentLinkProvider,
+        colorProvider,
+        foldingRangeProvider,
         executeCommandProvider,
-        supported,
-        changeNotifications);
+        workspace,
+        experimental);
   }
 
-  /// Whether the server wants to receive workspace folder
-  /// change notifications.
-  ///
-  /// If a strings is provided the string is treated as a
-  /// ID under which the notification is registered on the
-  /// client side. The ID can be used to unregister for
-  /// these events using the `client/unregisterCapability`
-  /// request.
-  final Either2<String, bool> changeNotifications;
-
-  /// The server provides code actions. The
-  /// `CodeActionOptions` return type is only valid if the
-  /// client signals code action literal support via the
-  /// property
-  /// `textDocument.codeAction.codeActionLiteralSupport`.
+  /// The server provides code actions. The `CodeActionOptions` return type is
+  /// only valid if the client signals code action literal support via the
+  /// property `textDocument.codeAction.codeActionLiteralSupport`.
   final Either2<bool, CodeActionOptions> codeActionProvider;
 
   /// The server provides code lens.
   final CodeLensOptions codeLensProvider;
 
+  /// The server provides color provider support.
+  ///
+  /// Since 3.6.0
+  final Either3<bool, ColorProviderOptions, dynamic> colorProvider;
+
   /// The server provides completion support.
   final CompletionOptions completionProvider;
 
@@ -4634,31 +6816,48 @@
   /// The server provides execute command support.
   final ExecuteCommandOptions executeCommandProvider;
 
+  /// Experimental server capabilities.
+  final dynamic experimental;
+
+  /// The server provides folding provider support.
+  ///
+  /// Since 3.10.0
+  final Either3<bool, FoldingRangeProviderOptions, dynamic>
+      foldingRangeProvider;
+
   /// The server provides hover support.
   final bool hoverProvider;
 
+  /// The server provides Goto Implementation support.
+  ///
+  /// Since 3.6.0
+  final Either2<bool, dynamic> implementationProvider;
+
   /// The server provides find references support.
   final bool referencesProvider;
 
-  /// The server provides rename support. RenameOptions
-  /// may only be specified if the client states that it
-  /// supports `prepareSupport` in its initial
+  /// The server provides rename support. RenameOptions may only be specified if
+  /// the client states that it supports `prepareSupport` in its initial
   /// `initialize` request.
   final Either2<bool, RenameOptions> renameProvider;
 
   /// The server provides signature help support.
   final SignatureHelpOptions signatureHelpProvider;
 
-  /// The server has support for workspace folders
-  final bool supported;
-
-  /// Defines how text documents are synced. Is either a
-  /// detailed structure defining each notification or for
-  /// backwards compatibility the TextDocumentSyncKind
-  /// number. If omitted it defaults to
+  /// Defines how text documents are synced. Is either a detailed structure
+  /// defining each notification or for backwards compatibility the
+  /// TextDocumentSyncKind number. If omitted it defaults to
   /// `TextDocumentSyncKind.None`.
   final Either2<TextDocumentSyncOptions, num> textDocumentSync;
 
+  /// The server provides Goto Type Definition support.
+  ///
+  /// Since 3.6.0
+  final Either2<bool, dynamic> typeDefinitionProvider;
+
+  /// Workspace specific server capabilities
+  final ServerCapabilitiesWorkspace workspace;
+
   /// The server provides workspace symbol support.
   final bool workspaceSymbolProvider;
 
@@ -4679,6 +6878,12 @@
     if (definitionProvider != null) {
       __result['definitionProvider'] = definitionProvider;
     }
+    if (typeDefinitionProvider != null) {
+      __result['typeDefinitionProvider'] = typeDefinitionProvider;
+    }
+    if (implementationProvider != null) {
+      __result['implementationProvider'] = implementationProvider;
+    }
     if (referencesProvider != null) {
       __result['referencesProvider'] = referencesProvider;
     }
@@ -4714,9 +6919,170 @@
     if (documentLinkProvider != null) {
       __result['documentLinkProvider'] = documentLinkProvider;
     }
+    if (colorProvider != null) {
+      __result['colorProvider'] = colorProvider;
+    }
+    if (foldingRangeProvider != null) {
+      __result['foldingRangeProvider'] = foldingRangeProvider;
+    }
     if (executeCommandProvider != null) {
       __result['executeCommandProvider'] = executeCommandProvider;
     }
+    if (workspace != null) {
+      __result['workspace'] = workspace;
+    }
+    if (experimental != null) {
+      __result['experimental'] = experimental;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is ServerCapabilities) {
+      return textDocumentSync == other.textDocumentSync &&
+          hoverProvider == other.hoverProvider &&
+          completionProvider == other.completionProvider &&
+          signatureHelpProvider == other.signatureHelpProvider &&
+          definitionProvider == other.definitionProvider &&
+          typeDefinitionProvider == other.typeDefinitionProvider &&
+          implementationProvider == other.implementationProvider &&
+          referencesProvider == other.referencesProvider &&
+          documentHighlightProvider == other.documentHighlightProvider &&
+          documentSymbolProvider == other.documentSymbolProvider &&
+          workspaceSymbolProvider == other.workspaceSymbolProvider &&
+          codeActionProvider == other.codeActionProvider &&
+          codeLensProvider == other.codeLensProvider &&
+          documentFormattingProvider == other.documentFormattingProvider &&
+          documentRangeFormattingProvider ==
+              other.documentRangeFormattingProvider &&
+          documentOnTypeFormattingProvider ==
+              other.documentOnTypeFormattingProvider &&
+          renameProvider == other.renameProvider &&
+          documentLinkProvider == other.documentLinkProvider &&
+          colorProvider == other.colorProvider &&
+          foldingRangeProvider == other.foldingRangeProvider &&
+          executeCommandProvider == other.executeCommandProvider &&
+          workspace == other.workspace &&
+          experimental == other.experimental &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocumentSync.hashCode);
+    hash = JenkinsSmiHash.combine(hash, hoverProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, completionProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, signatureHelpProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, definitionProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, typeDefinitionProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, implementationProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, referencesProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentHighlightProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentSymbolProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, workspaceSymbolProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, codeActionProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, codeLensProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentFormattingProvider.hashCode);
+    hash =
+        JenkinsSmiHash.combine(hash, documentRangeFormattingProvider.hashCode);
+    hash =
+        JenkinsSmiHash.combine(hash, documentOnTypeFormattingProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, renameProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentLinkProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, colorProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, foldingRangeProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, executeCommandProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, workspace.hashCode);
+    hash = JenkinsSmiHash.combine(hash, experimental.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class ServerCapabilitiesWorkspace implements ToJsonable {
+  ServerCapabilitiesWorkspace(this.workspaceFolders);
+  static ServerCapabilitiesWorkspace fromJson(Map<String, dynamic> json) {
+    final workspaceFolders = json['workspaceFolders'] != null
+        ? ServerCapabilitiesWorkspaceFolders.fromJson(json['workspaceFolders'])
+        : null;
+    return new ServerCapabilitiesWorkspace(workspaceFolders);
+  }
+
+  /// The server supports workspace folder.
+  ///
+  /// Since 3.6.0
+  final ServerCapabilitiesWorkspaceFolders workspaceFolders;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (workspaceFolders != null) {
+      __result['workspaceFolders'] = workspaceFolders;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is ServerCapabilitiesWorkspace) {
+      return workspaceFolders == other.workspaceFolders && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, workspaceFolders.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class ServerCapabilitiesWorkspaceFolders implements ToJsonable {
+  ServerCapabilitiesWorkspaceFolders(this.supported, this.changeNotifications);
+  static ServerCapabilitiesWorkspaceFolders fromJson(
+      Map<String, dynamic> json) {
+    final supported = json['supported'];
+    final changeNotifications = json['changeNotifications'] is String
+        ? new Either2<String, bool>.t1(json['changeNotifications'])
+        : (json['changeNotifications'] is bool
+            ? new Either2<String, bool>.t2(json['changeNotifications'])
+            : (json['changeNotifications'] == null
+                ? null
+                : (throw '''${json['changeNotifications']} was not one of (String, bool)''')));
+    return new ServerCapabilitiesWorkspaceFolders(
+        supported, changeNotifications);
+  }
+
+  /// Whether the server wants to receive workspace folder change notifications.
+  ///
+  /// If a strings is provided the string is treated as a ID under which the
+  /// notification is registered on the client side. The ID can be used to
+  /// unregister for these events using the `client/unregisterCapability`
+  /// request.
+  final Either2<String, bool> changeNotifications;
+
+  /// The server has support for workspace folders
+  final bool supported;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
     if (supported != null) {
       __result['supported'] = supported;
     }
@@ -4729,6 +7095,27 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ServerCapabilitiesWorkspaceFolders) {
+      return supported == other.supported &&
+          changeNotifications == other.changeNotifications &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, supported.hashCode);
+    hash = JenkinsSmiHash.combine(hash, changeNotifications.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ShowMessageParams implements ToJsonable {
@@ -4740,9 +7127,9 @@
       throw 'message is required but was not provided';
     }
   }
-  factory ShowMessageParams.fromJson(Map<String, dynamic> json) {
+  static ShowMessageParams fromJson(Map<String, dynamic> json) {
     final type =
-        json['type'] != null ? new MessageType.fromJson(json['type']) : null;
+        json['type'] != null ? MessageType.fromJson(json['type']) : null;
     final message = json['message'];
     return new ShowMessageParams(type, message);
   }
@@ -4768,6 +7155,25 @@
         obj.containsKey('message') &&
         obj['message'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ShowMessageParams) {
+      return type == other.type && message == other.message && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, type.hashCode);
+    hash = JenkinsSmiHash.combine(hash, message.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class ShowMessageRequestParams implements ToJsonable {
@@ -4779,13 +7185,12 @@
       throw 'message is required but was not provided';
     }
   }
-  factory ShowMessageRequestParams.fromJson(Map<String, dynamic> json) {
+  static ShowMessageRequestParams fromJson(Map<String, dynamic> json) {
     final type =
-        json['type'] != null ? new MessageType.fromJson(json['type']) : null;
+        json['type'] != null ? MessageType.fromJson(json['type']) : null;
     final message = json['message'];
     final actions = json['actions']
-        ?.map((item) =>
-            item != null ? new MessageActionItem.fromJson(item) : null)
+        ?.map((item) => item != null ? MessageActionItem.fromJson(item) : null)
         ?.cast<MessageActionItem>()
         ?.toList();
     return new ShowMessageRequestParams(type, message, actions);
@@ -4818,21 +7223,44 @@
         obj.containsKey('message') &&
         obj['message'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is ShowMessageRequestParams) {
+      return type == other.type &&
+          message == other.message &&
+          listEqual(actions, other.actions,
+              (MessageActionItem a, MessageActionItem b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, type.hashCode);
+    hash = JenkinsSmiHash.combine(hash, message.hashCode);
+    hash = JenkinsSmiHash.combine(hash, actions.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-/// Signature help represents the signature of something
-/// callable. There can be multiple signature but only one
-/// active and only one active parameter.
+/// Signature help represents the signature of something callable. There can be
+/// multiple signature but only one active and only one active parameter.
 class SignatureHelp implements ToJsonable {
   SignatureHelp(this.signatures, this.activeSignature, this.activeParameter) {
     if (signatures == null) {
       throw 'signatures is required but was not provided';
     }
   }
-  factory SignatureHelp.fromJson(Map<String, dynamic> json) {
+  static SignatureHelp fromJson(Map<String, dynamic> json) {
     final signatures = json['signatures']
-        ?.map((item) =>
-            item != null ? new SignatureInformation.fromJson(item) : null)
+        ?.map(
+            (item) => item != null ? SignatureInformation.fromJson(item) : null)
         ?.cast<SignatureInformation>()
         ?.toList();
     final activeSignature = json['activeSignature'];
@@ -4840,24 +7268,20 @@
     return new SignatureHelp(signatures, activeSignature, activeParameter);
   }
 
-  /// The active parameter of the active signature. If
-  /// omitted or the value lies outside the range of
-  /// `signatures[activeSignature].parameters` defaults to
-  /// 0 if the active signature has parameters. If the
-  /// active signature has no parameters it is ignored. In
-  /// future version of the protocol this property might
-  /// become mandatory to better express the active
-  /// parameter if the active signature does have any.
+  /// The active parameter of the active signature. If omitted or the value lies
+  /// outside the range of `signatures[activeSignature].parameters` defaults to
+  /// 0 if the active signature has parameters. If the active signature has no
+  /// parameters it is ignored. In future version of the protocol this property
+  /// might become mandatory to better express the active parameter if the
+  /// active signature does have any.
   final num activeParameter;
 
-  /// The active signature. If omitted or the value lies
-  /// outside the range of `signatures` the value defaults
-  /// to zero or is ignored if `signatures.length === 0`.
-  /// Whenever possible implementors should make an active
-  /// decision about the active signature and shouldn't
-  /// rely on a default value. In future version of the
-  /// protocol this property might become mandatory to
-  /// better express this.
+  /// The active signature. If omitted or the value lies outside the range of
+  /// `signatures` the value defaults to zero or is ignored if
+  /// `signatures.length === 0`. Whenever possible implementors should make an
+  /// active decision about the active signature and shouldn't rely on a default
+  /// value. In future version of the protocol this property might become
+  /// mandatory to better express this.
   final num activeSignature;
 
   /// One or more signatures.
@@ -4884,12 +7308,36 @@
                 obj['signatures']
                     .every((item) => SignatureInformation.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is SignatureHelp) {
+      return listEqual(signatures, other.signatures,
+              (SignatureInformation a, SignatureInformation b) => a == b) &&
+          activeSignature == other.activeSignature &&
+          activeParameter == other.activeParameter &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, signatures.hashCode);
+    hash = JenkinsSmiHash.combine(hash, activeSignature.hashCode);
+    hash = JenkinsSmiHash.combine(hash, activeParameter.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Signature help options.
 class SignatureHelpOptions implements ToJsonable {
   SignatureHelpOptions(this.triggerCharacters);
-  factory SignatureHelpOptions.fromJson(Map<String, dynamic> json) {
+  static SignatureHelpOptions fromJson(Map<String, dynamic> json) {
     final triggerCharacters = json['triggerCharacters']
         ?.map((item) => item)
         ?.cast<String>()
@@ -4897,8 +7345,7 @@
     return new SignatureHelpOptions(triggerCharacters);
   }
 
-  /// The characters that trigger signature help
-  /// automatically.
+  /// The characters that trigger signature help automatically.
   final List<String> triggerCharacters;
 
   Map<String, dynamic> toJson() {
@@ -4912,32 +7359,50 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is SignatureHelpOptions) {
+      return listEqual(triggerCharacters, other.triggerCharacters,
+              (String a, String b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, triggerCharacters.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class SignatureHelpRegistrationOptions
     implements TextDocumentRegistrationOptions, ToJsonable {
   SignatureHelpRegistrationOptions(
       this.triggerCharacters, this.documentSelector);
-  factory SignatureHelpRegistrationOptions.fromJson(Map<String, dynamic> json) {
+  static SignatureHelpRegistrationOptions fromJson(Map<String, dynamic> json) {
     final triggerCharacters = json['triggerCharacters']
         ?.map((item) => item)
         ?.cast<String>()
         ?.toList();
     final documentSelector = json['documentSelector']
-        ?.map((item) => item != null ? new DocumentFilter.fromJson(item) : null)
+        ?.map((item) => item != null ? DocumentFilter.fromJson(item) : null)
         ?.cast<DocumentFilter>()
         ?.toList();
     return new SignatureHelpRegistrationOptions(
         triggerCharacters, documentSelector);
   }
 
-  /// A document selector to identify the scope of the
-  /// registration. If set to null the document selector
-  /// provided on the client side will be used.
+  /// A document selector to identify the scope of the registration. If set to
+  /// null the document selector provided on the client side will be used.
   final List<DocumentFilter> documentSelector;
 
-  /// The characters that trigger signature help
-  /// automatically.
+  /// The characters that trigger signature help automatically.
   final List<String> triggerCharacters;
 
   Map<String, dynamic> toJson() {
@@ -4957,41 +7422,63 @@
                 obj['documentSelector']
                     .every((item) => DocumentFilter.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is SignatureHelpRegistrationOptions) {
+      return listEqual(triggerCharacters, other.triggerCharacters,
+              (String a, String b) => a == b) &&
+          documentSelector == other.documentSelector &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, triggerCharacters.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentSelector.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-/// Represents the signature of something callable. A
-/// signature can have a label, like a function-name, a
-/// doc-comment, and a set of parameters.
+/// Represents the signature of something callable. A signature can have a
+/// label, like a function-name, a doc-comment, and a set of parameters.
 class SignatureInformation implements ToJsonable {
   SignatureInformation(this.label, this.documentation, this.parameters) {
     if (label == null) {
       throw 'label is required but was not provided';
     }
   }
-  factory SignatureInformation.fromJson(Map<String, dynamic> json) {
+  static SignatureInformation fromJson(Map<String, dynamic> json) {
     final label = json['label'];
     final documentation = json['documentation'] is String
         ? new Either2<String, MarkupContent>.t1(json['documentation'])
         : (MarkupContent.canParse(json['documentation'])
             ? new Either2<String, MarkupContent>.t2(
                 json['documentation'] != null
-                    ? new MarkupContent.fromJson(json['documentation'])
+                    ? MarkupContent.fromJson(json['documentation'])
                     : null)
-            : (throw '''${json['documentation']} was not one of (string, MarkupContent)'''));
+            : (json['documentation'] == null
+                ? null
+                : (throw '''${json['documentation']} was not one of (String, MarkupContent)''')));
     final parameters = json['parameters']
-        ?.map((item) =>
-            item != null ? new ParameterInformation.fromJson(item) : null)
+        ?.map(
+            (item) => item != null ? ParameterInformation.fromJson(item) : null)
         ?.cast<ParameterInformation>()
         ?.toList();
     return new SignatureInformation(label, documentation, parameters);
   }
 
-  /// The human-readable doc-comment of this signature.
-  /// Will be shown in the UI but can be omitted.
+  /// The human-readable doc-comment of this signature. Will be shown in the UI
+  /// but can be omitted.
   final Either2<String, MarkupContent> documentation;
 
-  /// The label of this signature. Will be shown in the
-  /// UI.
+  /// The label of this signature. Will be shown in the UI.
   final String label;
 
   /// The parameters of this signature.
@@ -5014,20 +7501,42 @@
         obj.containsKey('label') &&
         obj['label'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is SignatureInformation) {
+      return label == other.label &&
+          documentation == other.documentation &&
+          listEqual(parameters, other.parameters,
+              (ParameterInformation a, ParameterInformation b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, label.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentation.hashCode);
+    hash = JenkinsSmiHash.combine(hash, parameters.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-/// Static registration options to be returned in the
-/// initialize request.
+/// Static registration options to be returned in the initialize request.
 class StaticRegistrationOptions implements ToJsonable {
   StaticRegistrationOptions(this.id);
-  factory StaticRegistrationOptions.fromJson(Map<String, dynamic> json) {
+  static StaticRegistrationOptions fromJson(Map<String, dynamic> json) {
     final id = json['id'];
     return new StaticRegistrationOptions(id);
   }
 
-  /// The id used to register the request. The id can be
-  /// used to deregister the request again. See also
-  /// Registration#id.
+  /// The id used to register the request. The id can be used to deregister the
+  /// request again. See also Registration#id.
   final String id;
 
   Map<String, dynamic> toJson() {
@@ -5041,10 +7550,28 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is StaticRegistrationOptions) {
+      return id == other.id && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, id.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-/// Represents information about programming constructs
-/// like variables, classes, interfaces etc.
+/// Represents information about programming constructs like variables, classes,
+/// interfaces etc.
 class SymbolInformation implements ToJsonable {
   SymbolInformation(this.name, this.kind, this.deprecated, this.location,
       this.containerName) {
@@ -5058,43 +7585,39 @@
       throw 'location is required but was not provided';
     }
   }
-  factory SymbolInformation.fromJson(Map<String, dynamic> json) {
+  static SymbolInformation fromJson(Map<String, dynamic> json) {
     final name = json['name'];
-    final kind = json['kind'];
+    final kind =
+        json['kind'] != null ? SymbolKind.fromJson(json['kind']) : null;
     final deprecated = json['deprecated'];
-    final location = json['location'] != null
-        ? new Location.fromJson(json['location'])
-        : null;
+    final location =
+        json['location'] != null ? Location.fromJson(json['location']) : null;
     final containerName = json['containerName'];
     return new SymbolInformation(
         name, kind, deprecated, location, containerName);
   }
 
-  /// The name of the symbol containing this symbol. This
-  /// information is for user interface purposes (e.g. to
-  /// render a qualifier in the user interface if
-  /// necessary). It can't be used to re-infer a hierarchy
-  /// for the document symbols.
+  /// The name of the symbol containing this symbol. This information is for
+  /// user interface purposes (e.g. to render a qualifier in the user interface
+  /// if necessary). It can't be used to re-infer a hierarchy for the document
+  /// symbols.
   final String containerName;
 
   /// Indicates if this symbol is deprecated.
   final bool deprecated;
 
   /// The kind of this symbol.
-  final num kind;
+  final SymbolKind kind;
 
-  /// The location of this symbol. The location's range is
-  /// used by a tool to reveal the location in the editor.
-  /// If the symbol is selected in the tool the range's
-  /// start information is used to position the cursor. So
-  /// the range usually spans more then the actual
-  /// symbol's name and does normally include things like
-  /// visibility modifiers.
+  /// The location of this symbol. The location's range is used by a tool to
+  /// reveal the location in the editor. If the symbol is selected in the tool
+  /// the range's start information is used to position the cursor. So the range
+  /// usually spans more then the actual symbol's name and does normally include
+  /// things like visibility modifiers.
   ///
-  /// The range doesn't have to denote a node range in the
-  /// sense of a abstract syntax tree. It can therefore
-  /// not be used to re-construct a hierarchy of the
-  /// symbols.
+  /// The range doesn't have to denote a node range in the sense of a abstract
+  /// syntax tree. It can therefore not be used to re-construct a hierarchy of
+  /// the symbols.
   final Location location;
 
   /// The name of this symbol.
@@ -5120,10 +7643,37 @@
         obj.containsKey('name') &&
         obj['name'] is String &&
         obj.containsKey('kind') &&
-        obj['kind'] is num &&
+        SymbolKind.canParse(obj['kind']) &&
         obj.containsKey('location') &&
         Location.canParse(obj['location']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is SymbolInformation) {
+      return name == other.name &&
+          kind == other.kind &&
+          deprecated == other.deprecated &&
+          location == other.location &&
+          containerName == other.containerName &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, name.hashCode);
+    hash = JenkinsSmiHash.combine(hash, kind.hashCode);
+    hash = JenkinsSmiHash.combine(hash, deprecated.hashCode);
+    hash = JenkinsSmiHash.combine(hash, location.hashCode);
+    hash = JenkinsSmiHash.combine(hash, containerName.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// A symbol kind.
@@ -5131,7 +7681,7 @@
   const SymbolKind._(this._value);
   const SymbolKind.fromJson(this._value);
 
-  final Object _value;
+  final num _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
@@ -5204,8 +7754,8 @@
   bool operator ==(o) => o is SymbolKind && o._value == _value;
 }
 
-/// Describe options to be used when registering for
-/// text document change events.
+/// Describe options to be used when registering for text document change
+/// events.
 class TextDocumentChangeRegistrationOptions
     implements TextDocumentRegistrationOptions, ToJsonable {
   TextDocumentChangeRegistrationOptions(this.syncKind, this.documentSelector) {
@@ -5213,24 +7763,22 @@
       throw 'syncKind is required but was not provided';
     }
   }
-  factory TextDocumentChangeRegistrationOptions.fromJson(
+  static TextDocumentChangeRegistrationOptions fromJson(
       Map<String, dynamic> json) {
     final syncKind = json['syncKind'];
     final documentSelector = json['documentSelector']
-        ?.map((item) => item != null ? new DocumentFilter.fromJson(item) : null)
+        ?.map((item) => item != null ? DocumentFilter.fromJson(item) : null)
         ?.cast<DocumentFilter>()
         ?.toList();
     return new TextDocumentChangeRegistrationOptions(
         syncKind, documentSelector);
   }
 
-  /// A document selector to identify the scope of the
-  /// registration. If set to null the document selector
-  /// provided on the client side will be used.
+  /// A document selector to identify the scope of the registration. If set to
+  /// null the document selector provided on the client side will be used.
   final List<DocumentFilter> documentSelector;
 
-  /// How documents are synced to the server. See
-  /// TextDocumentSyncKind.Full and
+  /// How documents are synced to the server. See TextDocumentSyncKind.Full and
   /// TextDocumentSyncKind.Incremental.
   final num syncKind;
 
@@ -5252,35 +7800,1651 @@
                 obj['documentSelector']
                     .every((item) => DocumentFilter.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentChangeRegistrationOptions) {
+      return syncKind == other.syncKind &&
+          documentSelector == other.documentSelector &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, syncKind.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentSelector.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Text document specific client capabilities.
 class TextDocumentClientCapabilities implements ToJsonable {
-  TextDocumentClientCapabilities(this.dynamicRegistration, this.willSave,
-      this.willSaveWaitUntil, this.didSave);
-  factory TextDocumentClientCapabilities.fromJson(Map<String, dynamic> json) {
+  TextDocumentClientCapabilities(
+      this.synchronization,
+      this.completion,
+      this.hover,
+      this.signatureHelp,
+      this.references,
+      this.documentHighlight,
+      this.documentSymbol,
+      this.formatting,
+      this.rangeFormatting,
+      this.onTypeFormatting,
+      this.definition,
+      this.typeDefinition,
+      this.implementation,
+      this.codeAction,
+      this.codeLens,
+      this.documentLink,
+      this.colorProvider,
+      this.rename,
+      this.publishDiagnostics,
+      this.foldingRange);
+  static TextDocumentClientCapabilities fromJson(Map<String, dynamic> json) {
+    final synchronization = json['synchronization'] != null
+        ? TextDocumentClientCapabilitiesSynchronization.fromJson(
+            json['synchronization'])
+        : null;
+    final completion = json['completion'] != null
+        ? TextDocumentClientCapabilitiesCompletion.fromJson(json['completion'])
+        : null;
+    final hover = json['hover'] != null
+        ? TextDocumentClientCapabilitiesHover.fromJson(json['hover'])
+        : null;
+    final signatureHelp = json['signatureHelp'] != null
+        ? TextDocumentClientCapabilitiesSignatureHelp.fromJson(
+            json['signatureHelp'])
+        : null;
+    final references = json['references'] != null
+        ? TextDocumentClientCapabilitiesReferences.fromJson(json['references'])
+        : null;
+    final documentHighlight = json['documentHighlight'] != null
+        ? TextDocumentClientCapabilitiesDocumentHighlight.fromJson(
+            json['documentHighlight'])
+        : null;
+    final documentSymbol = json['documentSymbol'] != null
+        ? TextDocumentClientCapabilitiesDocumentSymbol.fromJson(
+            json['documentSymbol'])
+        : null;
+    final formatting = json['formatting'] != null
+        ? TextDocumentClientCapabilitiesFormatting.fromJson(json['formatting'])
+        : null;
+    final rangeFormatting = json['rangeFormatting'] != null
+        ? TextDocumentClientCapabilitiesRangeFormatting.fromJson(
+            json['rangeFormatting'])
+        : null;
+    final onTypeFormatting = json['onTypeFormatting'] != null
+        ? TextDocumentClientCapabilitiesOnTypeFormatting.fromJson(
+            json['onTypeFormatting'])
+        : null;
+    final definition = json['definition'] != null
+        ? TextDocumentClientCapabilitiesDefinition.fromJson(json['definition'])
+        : null;
+    final typeDefinition = json['typeDefinition'] != null
+        ? TextDocumentClientCapabilitiesTypeDefinition.fromJson(
+            json['typeDefinition'])
+        : null;
+    final implementation = json['implementation'] != null
+        ? TextDocumentClientCapabilitiesImplementation.fromJson(
+            json['implementation'])
+        : null;
+    final codeAction = json['codeAction'] != null
+        ? TextDocumentClientCapabilitiesCodeAction.fromJson(json['codeAction'])
+        : null;
+    final codeLens = json['codeLens'] != null
+        ? TextDocumentClientCapabilitiesCodeLens.fromJson(json['codeLens'])
+        : null;
+    final documentLink = json['documentLink'] != null
+        ? TextDocumentClientCapabilitiesDocumentLink.fromJson(
+            json['documentLink'])
+        : null;
+    final colorProvider = json['colorProvider'] != null
+        ? TextDocumentClientCapabilitiesColorProvider.fromJson(
+            json['colorProvider'])
+        : null;
+    final rename = json['rename'] != null
+        ? TextDocumentClientCapabilitiesRename.fromJson(json['rename'])
+        : null;
+    final publishDiagnostics = json['publishDiagnostics'] != null
+        ? TextDocumentClientCapabilitiesPublishDiagnostics.fromJson(
+            json['publishDiagnostics'])
+        : null;
+    final foldingRange = json['foldingRange'] != null
+        ? TextDocumentClientCapabilitiesFoldingRange.fromJson(
+            json['foldingRange'])
+        : null;
+    return new TextDocumentClientCapabilities(
+        synchronization,
+        completion,
+        hover,
+        signatureHelp,
+        references,
+        documentHighlight,
+        documentSymbol,
+        formatting,
+        rangeFormatting,
+        onTypeFormatting,
+        definition,
+        typeDefinition,
+        implementation,
+        codeAction,
+        codeLens,
+        documentLink,
+        colorProvider,
+        rename,
+        publishDiagnostics,
+        foldingRange);
+  }
+
+  /// Capabilities specific to the `textDocument/codeAction`
+  final TextDocumentClientCapabilitiesCodeAction codeAction;
+
+  /// Capabilities specific to the `textDocument/codeLens`
+  final TextDocumentClientCapabilitiesCodeLens codeLens;
+
+  /// Capabilities specific to the `textDocument/documentColor` and the
+  /// `textDocument/colorPresentation` request.
+  ///
+  /// Since 3.6.0
+  final TextDocumentClientCapabilitiesColorProvider colorProvider;
+
+  /// Capabilities specific to the `textDocument/completion`
+  final TextDocumentClientCapabilitiesCompletion completion;
+
+  /// Capabilities specific to the `textDocument/definition`
+  final TextDocumentClientCapabilitiesDefinition definition;
+
+  /// Capabilities specific to the `textDocument/documentHighlight`
+  final TextDocumentClientCapabilitiesDocumentHighlight documentHighlight;
+
+  /// Capabilities specific to the `textDocument/documentLink`
+  final TextDocumentClientCapabilitiesDocumentLink documentLink;
+
+  /// Capabilities specific to the `textDocument/documentSymbol`
+  final TextDocumentClientCapabilitiesDocumentSymbol documentSymbol;
+
+  /// Capabilities specific to `textDocument/foldingRange` requests.
+  ///
+  /// Since 3.10.0
+  final TextDocumentClientCapabilitiesFoldingRange foldingRange;
+
+  /// Capabilities specific to the `textDocument/formatting`
+  final TextDocumentClientCapabilitiesFormatting formatting;
+
+  /// Capabilities specific to the `textDocument/hover`
+  final TextDocumentClientCapabilitiesHover hover;
+
+  /// Capabilities specific to the `textDocument/implementation`.
+  ///
+  /// Since 3.6.0
+  final TextDocumentClientCapabilitiesImplementation implementation;
+
+  /// Capabilities specific to the `textDocument/onTypeFormatting`
+  final TextDocumentClientCapabilitiesOnTypeFormatting onTypeFormatting;
+
+  /// Capabilities specific to `textDocument/publishDiagnostics`.
+  final TextDocumentClientCapabilitiesPublishDiagnostics publishDiagnostics;
+
+  /// Capabilities specific to the `textDocument/rangeFormatting`
+  final TextDocumentClientCapabilitiesRangeFormatting rangeFormatting;
+
+  /// Capabilities specific to the `textDocument/references`
+  final TextDocumentClientCapabilitiesReferences references;
+
+  /// Capabilities specific to the `textDocument/rename`
+  final TextDocumentClientCapabilitiesRename rename;
+
+  /// Capabilities specific to the `textDocument/signatureHelp`
+  final TextDocumentClientCapabilitiesSignatureHelp signatureHelp;
+  final TextDocumentClientCapabilitiesSynchronization synchronization;
+
+  /// Capabilities specific to the `textDocument/typeDefinition`
+  ///
+  /// Since 3.6.0
+  final TextDocumentClientCapabilitiesTypeDefinition typeDefinition;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (synchronization != null) {
+      __result['synchronization'] = synchronization;
+    }
+    if (completion != null) {
+      __result['completion'] = completion;
+    }
+    if (hover != null) {
+      __result['hover'] = hover;
+    }
+    if (signatureHelp != null) {
+      __result['signatureHelp'] = signatureHelp;
+    }
+    if (references != null) {
+      __result['references'] = references;
+    }
+    if (documentHighlight != null) {
+      __result['documentHighlight'] = documentHighlight;
+    }
+    if (documentSymbol != null) {
+      __result['documentSymbol'] = documentSymbol;
+    }
+    if (formatting != null) {
+      __result['formatting'] = formatting;
+    }
+    if (rangeFormatting != null) {
+      __result['rangeFormatting'] = rangeFormatting;
+    }
+    if (onTypeFormatting != null) {
+      __result['onTypeFormatting'] = onTypeFormatting;
+    }
+    if (definition != null) {
+      __result['definition'] = definition;
+    }
+    if (typeDefinition != null) {
+      __result['typeDefinition'] = typeDefinition;
+    }
+    if (implementation != null) {
+      __result['implementation'] = implementation;
+    }
+    if (codeAction != null) {
+      __result['codeAction'] = codeAction;
+    }
+    if (codeLens != null) {
+      __result['codeLens'] = codeLens;
+    }
+    if (documentLink != null) {
+      __result['documentLink'] = documentLink;
+    }
+    if (colorProvider != null) {
+      __result['colorProvider'] = colorProvider;
+    }
+    if (rename != null) {
+      __result['rename'] = rename;
+    }
+    if (publishDiagnostics != null) {
+      __result['publishDiagnostics'] = publishDiagnostics;
+    }
+    if (foldingRange != null) {
+      __result['foldingRange'] = foldingRange;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilities) {
+      return synchronization == other.synchronization &&
+          completion == other.completion &&
+          hover == other.hover &&
+          signatureHelp == other.signatureHelp &&
+          references == other.references &&
+          documentHighlight == other.documentHighlight &&
+          documentSymbol == other.documentSymbol &&
+          formatting == other.formatting &&
+          rangeFormatting == other.rangeFormatting &&
+          onTypeFormatting == other.onTypeFormatting &&
+          definition == other.definition &&
+          typeDefinition == other.typeDefinition &&
+          implementation == other.implementation &&
+          codeAction == other.codeAction &&
+          codeLens == other.codeLens &&
+          documentLink == other.documentLink &&
+          colorProvider == other.colorProvider &&
+          rename == other.rename &&
+          publishDiagnostics == other.publishDiagnostics &&
+          foldingRange == other.foldingRange &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, synchronization.hashCode);
+    hash = JenkinsSmiHash.combine(hash, completion.hashCode);
+    hash = JenkinsSmiHash.combine(hash, hover.hashCode);
+    hash = JenkinsSmiHash.combine(hash, signatureHelp.hashCode);
+    hash = JenkinsSmiHash.combine(hash, references.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentHighlight.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentSymbol.hashCode);
+    hash = JenkinsSmiHash.combine(hash, formatting.hashCode);
+    hash = JenkinsSmiHash.combine(hash, rangeFormatting.hashCode);
+    hash = JenkinsSmiHash.combine(hash, onTypeFormatting.hashCode);
+    hash = JenkinsSmiHash.combine(hash, definition.hashCode);
+    hash = JenkinsSmiHash.combine(hash, typeDefinition.hashCode);
+    hash = JenkinsSmiHash.combine(hash, implementation.hashCode);
+    hash = JenkinsSmiHash.combine(hash, codeAction.hashCode);
+    hash = JenkinsSmiHash.combine(hash, codeLens.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentLink.hashCode);
+    hash = JenkinsSmiHash.combine(hash, colorProvider.hashCode);
+    hash = JenkinsSmiHash.combine(hash, rename.hashCode);
+    hash = JenkinsSmiHash.combine(hash, publishDiagnostics.hashCode);
+    hash = JenkinsSmiHash.combine(hash, foldingRange.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesCodeAction implements ToJsonable {
+  TextDocumentClientCapabilitiesCodeAction(
+      this.dynamicRegistration, this.codeActionLiteralSupport);
+  static TextDocumentClientCapabilitiesCodeAction fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    final codeActionLiteralSupport = json['codeActionLiteralSupport'] != null
+        ? TextDocumentClientCapabilitiesCodeActionLiteralSupport.fromJson(
+            json['codeActionLiteralSupport'])
+        : null;
+    return new TextDocumentClientCapabilitiesCodeAction(
+        dynamicRegistration, codeActionLiteralSupport);
+  }
+
+  /// The client support code action literals as a valid response of the
+  /// `textDocument/codeAction` request.
+  ///
+  /// Since 3.8.0
+  final TextDocumentClientCapabilitiesCodeActionLiteralSupport
+      codeActionLiteralSupport;
+
+  /// Whether code action supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    if (codeActionLiteralSupport != null) {
+      __result['codeActionLiteralSupport'] = codeActionLiteralSupport;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesCodeAction) {
+      return dynamicRegistration == other.dynamicRegistration &&
+          codeActionLiteralSupport == other.codeActionLiteralSupport &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    hash = JenkinsSmiHash.combine(hash, codeActionLiteralSupport.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesCodeActionKind implements ToJsonable {
+  TextDocumentClientCapabilitiesCodeActionKind(this.valueSet) {
+    if (valueSet == null) {
+      throw 'valueSet is required but was not provided';
+    }
+  }
+  static TextDocumentClientCapabilitiesCodeActionKind fromJson(
+      Map<String, dynamic> json) {
+    final valueSet = json['valueSet']
+        ?.map((item) => item != null ? CodeActionKind.fromJson(item) : null)
+        ?.cast<CodeActionKind>()
+        ?.toList();
+    return new TextDocumentClientCapabilitiesCodeActionKind(valueSet);
+  }
+
+  /// The code action kind values the client supports. When this property exists
+  /// the client also guarantees that it will handle values outside its set
+  /// gracefully and falls back to a default value when unknown.
+  final List<CodeActionKind> valueSet;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    __result['valueSet'] =
+        valueSet ?? (throw 'valueSet is required but was not set');
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic> &&
+        obj.containsKey('valueSet') &&
+        (obj['valueSet'] is List &&
+            (obj['valueSet'].length == 0 ||
+                obj['valueSet'].every((item) => item is String)));
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesCodeActionKind) {
+      return listEqual(valueSet, other.valueSet,
+              (CodeActionKind a, CodeActionKind b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, valueSet.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesCodeActionLiteralSupport
+    implements ToJsonable {
+  TextDocumentClientCapabilitiesCodeActionLiteralSupport(this.codeActionKind) {
+    if (codeActionKind == null) {
+      throw 'codeActionKind is required but was not provided';
+    }
+  }
+  static TextDocumentClientCapabilitiesCodeActionLiteralSupport fromJson(
+      Map<String, dynamic> json) {
+    final codeActionKind = json['codeActionKind'] != null
+        ? TextDocumentClientCapabilitiesCodeActionKind.fromJson(
+            json['codeActionKind'])
+        : null;
+    return new TextDocumentClientCapabilitiesCodeActionLiteralSupport(
+        codeActionKind);
+  }
+
+  /// The code action kind is support with the following value set.
+  final TextDocumentClientCapabilitiesCodeActionKind codeActionKind;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    __result['codeActionKind'] =
+        codeActionKind ?? (throw 'codeActionKind is required but was not set');
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic> &&
+        obj.containsKey('codeActionKind') &&
+        TextDocumentClientCapabilitiesCodeActionKind.canParse(
+            obj['codeActionKind']);
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesCodeActionLiteralSupport) {
+      return codeActionKind == other.codeActionKind && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, codeActionKind.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesCodeLens implements ToJsonable {
+  TextDocumentClientCapabilitiesCodeLens(this.dynamicRegistration);
+  static TextDocumentClientCapabilitiesCodeLens fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new TextDocumentClientCapabilitiesCodeLens(dynamicRegistration);
+  }
+
+  /// Whether code lens supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesCodeLens) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesColorProvider implements ToJsonable {
+  TextDocumentClientCapabilitiesColorProvider(this.dynamicRegistration);
+  static TextDocumentClientCapabilitiesColorProvider fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new TextDocumentClientCapabilitiesColorProvider(dynamicRegistration);
+  }
+
+  /// Whether colorProvider supports dynamic registration. If this is set to
+  /// `true` the client supports the new `(ColorProviderOptions &
+  /// TextDocumentRegistrationOptions & StaticRegistrationOptions)` return value
+  /// for the corresponding server capability as well.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesColorProvider) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesCompletion implements ToJsonable {
+  TextDocumentClientCapabilitiesCompletion(this.dynamicRegistration,
+      this.completionItem, this.completionItemKind, this.contextSupport);
+  static TextDocumentClientCapabilitiesCompletion fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    final completionItem = json['completionItem'] != null
+        ? TextDocumentClientCapabilitiesCompletionItem.fromJson(
+            json['completionItem'])
+        : null;
+    final completionItemKind = json['completionItemKind'] != null
+        ? TextDocumentClientCapabilitiesCompletionItemKind.fromJson(
+            json['completionItemKind'])
+        : null;
+    final contextSupport = json['contextSupport'];
+    return new TextDocumentClientCapabilitiesCompletion(dynamicRegistration,
+        completionItem, completionItemKind, contextSupport);
+  }
+
+  /// The client supports the following `CompletionItem` specific capabilities.
+  final TextDocumentClientCapabilitiesCompletionItem completionItem;
+  final TextDocumentClientCapabilitiesCompletionItemKind completionItemKind;
+
+  /// The client supports to send additional context information for a
+  /// `textDocument/completion` request.
+  final bool contextSupport;
+
+  /// Whether completion supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    if (completionItem != null) {
+      __result['completionItem'] = completionItem;
+    }
+    if (completionItemKind != null) {
+      __result['completionItemKind'] = completionItemKind;
+    }
+    if (contextSupport != null) {
+      __result['contextSupport'] = contextSupport;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesCompletion) {
+      return dynamicRegistration == other.dynamicRegistration &&
+          completionItem == other.completionItem &&
+          completionItemKind == other.completionItemKind &&
+          contextSupport == other.contextSupport &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    hash = JenkinsSmiHash.combine(hash, completionItem.hashCode);
+    hash = JenkinsSmiHash.combine(hash, completionItemKind.hashCode);
+    hash = JenkinsSmiHash.combine(hash, contextSupport.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesCompletionItem implements ToJsonable {
+  TextDocumentClientCapabilitiesCompletionItem(
+      this.snippetSupport,
+      this.commitCharactersSupport,
+      this.documentationFormat,
+      this.deprecatedSupport,
+      this.preselectSupport);
+  static TextDocumentClientCapabilitiesCompletionItem fromJson(
+      Map<String, dynamic> json) {
+    final snippetSupport = json['snippetSupport'];
+    final commitCharactersSupport = json['commitCharactersSupport'];
+    final documentationFormat = json['documentationFormat']
+        ?.map((item) => item != null ? MarkupKind.fromJson(item) : null)
+        ?.cast<MarkupKind>()
+        ?.toList();
+    final deprecatedSupport = json['deprecatedSupport'];
+    final preselectSupport = json['preselectSupport'];
+    return new TextDocumentClientCapabilitiesCompletionItem(
+        snippetSupport,
+        commitCharactersSupport,
+        documentationFormat,
+        deprecatedSupport,
+        preselectSupport);
+  }
+
+  /// The client supports commit characters on a completion item.
+  final bool commitCharactersSupport;
+
+  /// The client supports the deprecated property on a completion item.
+  final bool deprecatedSupport;
+
+  /// The client supports the following content formats for the documentation
+  /// property. The order describes the preferred format of the client.
+  final List<MarkupKind> documentationFormat;
+
+  /// The client supports the preselect property on a completion item.
+  final bool preselectSupport;
+
+  /// The client supports snippets as insert text.
+  ///
+  /// A snippet can define tab stops and placeholders with `$1`, `$2` and
+  /// `${3:foo}`. `$0` defines the final tab stop, it defaults to the end of the
+  /// snippet. Placeholders with equal identifiers are linked, that is typing in
+  /// one will update others too.
+  final bool snippetSupport;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (snippetSupport != null) {
+      __result['snippetSupport'] = snippetSupport;
+    }
+    if (commitCharactersSupport != null) {
+      __result['commitCharactersSupport'] = commitCharactersSupport;
+    }
+    if (documentationFormat != null) {
+      __result['documentationFormat'] = documentationFormat;
+    }
+    if (deprecatedSupport != null) {
+      __result['deprecatedSupport'] = deprecatedSupport;
+    }
+    if (preselectSupport != null) {
+      __result['preselectSupport'] = preselectSupport;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesCompletionItem) {
+      return snippetSupport == other.snippetSupport &&
+          commitCharactersSupport == other.commitCharactersSupport &&
+          listEqual(documentationFormat, other.documentationFormat,
+              (MarkupKind a, MarkupKind b) => a == b) &&
+          deprecatedSupport == other.deprecatedSupport &&
+          preselectSupport == other.preselectSupport &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, snippetSupport.hashCode);
+    hash = JenkinsSmiHash.combine(hash, commitCharactersSupport.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentationFormat.hashCode);
+    hash = JenkinsSmiHash.combine(hash, deprecatedSupport.hashCode);
+    hash = JenkinsSmiHash.combine(hash, preselectSupport.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesCompletionItemKind implements ToJsonable {
+  TextDocumentClientCapabilitiesCompletionItemKind(this.valueSet);
+  static TextDocumentClientCapabilitiesCompletionItemKind fromJson(
+      Map<String, dynamic> json) {
+    final valueSet = json['valueSet']
+        ?.map((item) => item != null ? CompletionItemKind.fromJson(item) : null)
+        ?.cast<CompletionItemKind>()
+        ?.toList();
+    return new TextDocumentClientCapabilitiesCompletionItemKind(valueSet);
+  }
+
+  /// The completion item kind values the client supports. When this property
+  /// exists the client also guarantees that it will handle values outside its
+  /// set gracefully and falls back to a default value when unknown.
+  ///
+  /// If this property is not present the client only supports the completion
+  /// items kinds from `Text` to `Reference` as defined in the initial version
+  /// of the protocol.
+  final List<CompletionItemKind> valueSet;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (valueSet != null) {
+      __result['valueSet'] = valueSet;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesCompletionItemKind) {
+      return listEqual(valueSet, other.valueSet,
+              (CompletionItemKind a, CompletionItemKind b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, valueSet.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesDefinition implements ToJsonable {
+  TextDocumentClientCapabilitiesDefinition(this.dynamicRegistration);
+  static TextDocumentClientCapabilitiesDefinition fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new TextDocumentClientCapabilitiesDefinition(dynamicRegistration);
+  }
+
+  /// Whether definition supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesDefinition) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesDocumentHighlight implements ToJsonable {
+  TextDocumentClientCapabilitiesDocumentHighlight(this.dynamicRegistration);
+  static TextDocumentClientCapabilitiesDocumentHighlight fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new TextDocumentClientCapabilitiesDocumentHighlight(
+        dynamicRegistration);
+  }
+
+  /// Whether document highlight supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesDocumentHighlight) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesDocumentLink implements ToJsonable {
+  TextDocumentClientCapabilitiesDocumentLink(this.dynamicRegistration);
+  static TextDocumentClientCapabilitiesDocumentLink fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new TextDocumentClientCapabilitiesDocumentLink(dynamicRegistration);
+  }
+
+  /// Whether document link supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesDocumentLink) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesDocumentSymbol implements ToJsonable {
+  TextDocumentClientCapabilitiesDocumentSymbol(this.dynamicRegistration,
+      this.symbolKind, this.hierarchicalDocumentSymbolSupport);
+  static TextDocumentClientCapabilitiesDocumentSymbol fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    final symbolKind = json['symbolKind'] != null
+        ? TextDocumentClientCapabilitiesSymbolKind.fromJson(json['symbolKind'])
+        : null;
+    final hierarchicalDocumentSymbolSupport =
+        json['hierarchicalDocumentSymbolSupport'];
+    return new TextDocumentClientCapabilitiesDocumentSymbol(
+        dynamicRegistration, symbolKind, hierarchicalDocumentSymbolSupport);
+  }
+
+  /// Whether document symbol supports dynamic registration.
+  final bool dynamicRegistration;
+
+  /// The client supports hierarchical document symbols.
+  final bool hierarchicalDocumentSymbolSupport;
+
+  /// Specific capabilities for the `SymbolKind`.
+  final TextDocumentClientCapabilitiesSymbolKind symbolKind;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    if (symbolKind != null) {
+      __result['symbolKind'] = symbolKind;
+    }
+    if (hierarchicalDocumentSymbolSupport != null) {
+      __result['hierarchicalDocumentSymbolSupport'] =
+          hierarchicalDocumentSymbolSupport;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesDocumentSymbol) {
+      return dynamicRegistration == other.dynamicRegistration &&
+          symbolKind == other.symbolKind &&
+          hierarchicalDocumentSymbolSupport ==
+              other.hierarchicalDocumentSymbolSupport &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    hash = JenkinsSmiHash.combine(hash, symbolKind.hashCode);
+    hash = JenkinsSmiHash.combine(
+        hash, hierarchicalDocumentSymbolSupport.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesFoldingRange implements ToJsonable {
+  TextDocumentClientCapabilitiesFoldingRange(
+      this.dynamicRegistration, this.rangeLimit, this.lineFoldingOnly);
+  static TextDocumentClientCapabilitiesFoldingRange fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    final rangeLimit = json['rangeLimit'];
+    final lineFoldingOnly = json['lineFoldingOnly'];
+    return new TextDocumentClientCapabilitiesFoldingRange(
+        dynamicRegistration, rangeLimit, lineFoldingOnly);
+  }
+
+  /// Whether implementation supports dynamic registration for folding range
+  /// providers. If this is set to `true` the client supports the new
+  /// `(FoldingRangeProviderOptions & TextDocumentRegistrationOptions &
+  /// StaticRegistrationOptions)` return value for the corresponding server
+  /// capability as well.
+  final bool dynamicRegistration;
+
+  /// If set, the client signals that it only supports folding complete lines.
+  /// If set, client will ignore specified `startCharacter` and `endCharacter`
+  /// properties in a FoldingRange.
+  final bool lineFoldingOnly;
+
+  /// The maximum number of folding ranges that the client prefers to receive
+  /// per document. The value serves as a hint, servers are free to follow the
+  /// limit.
+  final num rangeLimit;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    if (rangeLimit != null) {
+      __result['rangeLimit'] = rangeLimit;
+    }
+    if (lineFoldingOnly != null) {
+      __result['lineFoldingOnly'] = lineFoldingOnly;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesFoldingRange) {
+      return dynamicRegistration == other.dynamicRegistration &&
+          rangeLimit == other.rangeLimit &&
+          lineFoldingOnly == other.lineFoldingOnly &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    hash = JenkinsSmiHash.combine(hash, rangeLimit.hashCode);
+    hash = JenkinsSmiHash.combine(hash, lineFoldingOnly.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesFormatting implements ToJsonable {
+  TextDocumentClientCapabilitiesFormatting(this.dynamicRegistration);
+  static TextDocumentClientCapabilitiesFormatting fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new TextDocumentClientCapabilitiesFormatting(dynamicRegistration);
+  }
+
+  /// Whether formatting supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesFormatting) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesHover implements ToJsonable {
+  TextDocumentClientCapabilitiesHover(
+      this.dynamicRegistration, this.contentFormat);
+  static TextDocumentClientCapabilitiesHover fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    final contentFormat = json['contentFormat']
+        ?.map((item) => item != null ? MarkupKind.fromJson(item) : null)
+        ?.cast<MarkupKind>()
+        ?.toList();
+    return new TextDocumentClientCapabilitiesHover(
+        dynamicRegistration, contentFormat);
+  }
+
+  /// The client supports the follow content formats for the content property.
+  /// The order describes the preferred format of the client.
+  final List<MarkupKind> contentFormat;
+
+  /// Whether hover supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    if (contentFormat != null) {
+      __result['contentFormat'] = contentFormat;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesHover) {
+      return dynamicRegistration == other.dynamicRegistration &&
+          listEqual(contentFormat, other.contentFormat,
+              (MarkupKind a, MarkupKind b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    hash = JenkinsSmiHash.combine(hash, contentFormat.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesImplementation implements ToJsonable {
+  TextDocumentClientCapabilitiesImplementation(this.dynamicRegistration);
+  static TextDocumentClientCapabilitiesImplementation fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new TextDocumentClientCapabilitiesImplementation(
+        dynamicRegistration);
+  }
+
+  /// Whether implementation supports dynamic registration. If this is set to
+  /// `true` the client supports the new `(TextDocumentRegistrationOptions &
+  /// StaticRegistrationOptions)` return value for the corresponding server
+  /// capability as well.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesImplementation) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesOnTypeFormatting implements ToJsonable {
+  TextDocumentClientCapabilitiesOnTypeFormatting(this.dynamicRegistration);
+  static TextDocumentClientCapabilitiesOnTypeFormatting fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new TextDocumentClientCapabilitiesOnTypeFormatting(
+        dynamicRegistration);
+  }
+
+  /// Whether on type formatting supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesOnTypeFormatting) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesPublishDiagnostics implements ToJsonable {
+  TextDocumentClientCapabilitiesPublishDiagnostics(this.relatedInformation);
+  static TextDocumentClientCapabilitiesPublishDiagnostics fromJson(
+      Map<String, dynamic> json) {
+    final relatedInformation = json['relatedInformation'];
+    return new TextDocumentClientCapabilitiesPublishDiagnostics(
+        relatedInformation);
+  }
+
+  /// Whether the clients accepts diagnostics with related information.
+  final bool relatedInformation;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (relatedInformation != null) {
+      __result['relatedInformation'] = relatedInformation;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesPublishDiagnostics) {
+      return relatedInformation == other.relatedInformation && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, relatedInformation.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesRangeFormatting implements ToJsonable {
+  TextDocumentClientCapabilitiesRangeFormatting(this.dynamicRegistration);
+  static TextDocumentClientCapabilitiesRangeFormatting fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new TextDocumentClientCapabilitiesRangeFormatting(
+        dynamicRegistration);
+  }
+
+  /// Whether range formatting supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesRangeFormatting) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesReferences implements ToJsonable {
+  TextDocumentClientCapabilitiesReferences(this.dynamicRegistration);
+  static TextDocumentClientCapabilitiesReferences fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new TextDocumentClientCapabilitiesReferences(dynamicRegistration);
+  }
+
+  /// Whether references supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesReferences) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesRename implements ToJsonable {
+  TextDocumentClientCapabilitiesRename(
+      this.dynamicRegistration, this.prepareSupport);
+  static TextDocumentClientCapabilitiesRename fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    final prepareSupport = json['prepareSupport'];
+    return new TextDocumentClientCapabilitiesRename(
+        dynamicRegistration, prepareSupport);
+  }
+
+  /// Whether rename supports dynamic registration.
+  final bool dynamicRegistration;
+
+  /// The client supports testing for validity of rename operations before
+  /// execution.
+  final bool prepareSupport;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    if (prepareSupport != null) {
+      __result['prepareSupport'] = prepareSupport;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesRename) {
+      return dynamicRegistration == other.dynamicRegistration &&
+          prepareSupport == other.prepareSupport &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    hash = JenkinsSmiHash.combine(hash, prepareSupport.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesSignatureHelp implements ToJsonable {
+  TextDocumentClientCapabilitiesSignatureHelp(
+      this.dynamicRegistration, this.signatureInformation);
+  static TextDocumentClientCapabilitiesSignatureHelp fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    final signatureInformation = json['signatureInformation'] != null
+        ? TextDocumentClientCapabilitiesSignatureInformation.fromJson(
+            json['signatureInformation'])
+        : null;
+    return new TextDocumentClientCapabilitiesSignatureHelp(
+        dynamicRegistration, signatureInformation);
+  }
+
+  /// Whether signature help supports dynamic registration.
+  final bool dynamicRegistration;
+
+  /// The client supports the following `SignatureInformation` specific
+  /// properties.
+  final TextDocumentClientCapabilitiesSignatureInformation signatureInformation;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    if (signatureInformation != null) {
+      __result['signatureInformation'] = signatureInformation;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesSignatureHelp) {
+      return dynamicRegistration == other.dynamicRegistration &&
+          signatureInformation == other.signatureInformation &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    hash = JenkinsSmiHash.combine(hash, signatureInformation.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesSignatureInformation implements ToJsonable {
+  TextDocumentClientCapabilitiesSignatureInformation(this.documentationFormat);
+  static TextDocumentClientCapabilitiesSignatureInformation fromJson(
+      Map<String, dynamic> json) {
+    final documentationFormat = json['documentationFormat']
+        ?.map((item) => item != null ? MarkupKind.fromJson(item) : null)
+        ?.cast<MarkupKind>()
+        ?.toList();
+    return new TextDocumentClientCapabilitiesSignatureInformation(
+        documentationFormat);
+  }
+
+  /// The client supports the follow content formats for the documentation
+  /// property. The order describes the preferred format of the client.
+  final List<MarkupKind> documentationFormat;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (documentationFormat != null) {
+      __result['documentationFormat'] = documentationFormat;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesSignatureInformation) {
+      return listEqual(documentationFormat, other.documentationFormat,
+              (MarkupKind a, MarkupKind b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, documentationFormat.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesSymbolKind implements ToJsonable {
+  TextDocumentClientCapabilitiesSymbolKind(this.valueSet);
+  static TextDocumentClientCapabilitiesSymbolKind fromJson(
+      Map<String, dynamic> json) {
+    final valueSet = json['valueSet']
+        ?.map((item) => item != null ? SymbolKind.fromJson(item) : null)
+        ?.cast<SymbolKind>()
+        ?.toList();
+    return new TextDocumentClientCapabilitiesSymbolKind(valueSet);
+  }
+
+  /// The symbol kind values the client supports. When this property exists the
+  /// client also guarantees that it will handle values outside its set
+  /// gracefully and falls back to a default value when unknown.
+  ///
+  /// If this property is not present the client only supports the symbol kinds
+  /// from `File` to `Array` as defined in the initial version of the protocol.
+  final List<SymbolKind> valueSet;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (valueSet != null) {
+      __result['valueSet'] = valueSet;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesSymbolKind) {
+      return listEqual(valueSet, other.valueSet,
+              (SymbolKind a, SymbolKind b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, valueSet.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class TextDocumentClientCapabilitiesSynchronization implements ToJsonable {
+  TextDocumentClientCapabilitiesSynchronization(this.dynamicRegistration,
+      this.willSave, this.willSaveWaitUntil, this.didSave);
+  static TextDocumentClientCapabilitiesSynchronization fromJson(
+      Map<String, dynamic> json) {
     final dynamicRegistration = json['dynamicRegistration'];
     final willSave = json['willSave'];
     final willSaveWaitUntil = json['willSaveWaitUntil'];
     final didSave = json['didSave'];
-    return new TextDocumentClientCapabilities(
+    return new TextDocumentClientCapabilitiesSynchronization(
         dynamicRegistration, willSave, willSaveWaitUntil, didSave);
   }
 
   /// The client supports did save notifications.
   final bool didSave;
 
-  /// Whether text document synchronization supports
-  /// dynamic registration.
+  /// Whether text document synchronization supports dynamic registration.
   final bool dynamicRegistration;
 
-  /// The client supports sending will save
-  /// notifications.
+  /// The client supports sending will save notifications.
   final bool willSave;
 
-  /// The client supports sending a will save request
-  /// and waits for a response providing text edits
-  /// which will be applied to the document before it is
+  /// The client supports sending a will save request and waits for a response
+  /// providing text edits which will be applied to the document before it is
   /// saved.
   final bool willSaveWaitUntil;
 
@@ -5304,20 +9468,90 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesSynchronization) {
+      return dynamicRegistration == other.dynamicRegistration &&
+          willSave == other.willSave &&
+          willSaveWaitUntil == other.willSaveWaitUntil &&
+          didSave == other.didSave &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    hash = JenkinsSmiHash.combine(hash, willSave.hashCode);
+    hash = JenkinsSmiHash.combine(hash, willSaveWaitUntil.hashCode);
+    hash = JenkinsSmiHash.combine(hash, didSave.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-/// An event describing a change to a text document. If
-/// range and rangeLength are omitted the new text is
-/// considered to be the full content of the document.
+class TextDocumentClientCapabilitiesTypeDefinition implements ToJsonable {
+  TextDocumentClientCapabilitiesTypeDefinition(this.dynamicRegistration);
+  static TextDocumentClientCapabilitiesTypeDefinition fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new TextDocumentClientCapabilitiesTypeDefinition(
+        dynamicRegistration);
+  }
+
+  /// Whether typeDefinition supports dynamic registration. If this is set to
+  /// `true` the client supports the new `(TextDocumentRegistrationOptions &
+  /// StaticRegistrationOptions)` return value for the corresponding server
+  /// capability as well.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentClientCapabilitiesTypeDefinition) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+/// An event describing a change to a text document. If range and rangeLength
+/// are omitted the new text is considered to be the full content of the
+/// document.
 class TextDocumentContentChangeEvent implements ToJsonable {
   TextDocumentContentChangeEvent(this.range, this.rangeLength, this.text) {
     if (text == null) {
       throw 'text is required but was not provided';
     }
   }
-  factory TextDocumentContentChangeEvent.fromJson(Map<String, dynamic> json) {
-    final range =
-        json['range'] != null ? new Range.fromJson(json['range']) : null;
+  static TextDocumentContentChangeEvent fromJson(Map<String, dynamic> json) {
+    final range = json['range'] != null ? Range.fromJson(json['range']) : null;
     final rangeLength = json['rangeLength'];
     final text = json['text'];
     return new TextDocumentContentChangeEvent(range, rangeLength, text);
@@ -5349,9 +9583,32 @@
         obj.containsKey('text') &&
         obj['text'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentContentChangeEvent) {
+      return range == other.range &&
+          rangeLength == other.rangeLength &&
+          text == other.text &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, range.hashCode);
+    hash = JenkinsSmiHash.combine(hash, rangeLength.hashCode);
+    hash = JenkinsSmiHash.combine(hash, text.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-class TextDocumentEdit implements FileOperation, ToJsonable {
+class TextDocumentEdit implements ToJsonable {
   TextDocumentEdit(this.textDocument, this.edits) {
     if (textDocument == null) {
       throw 'textDocument is required but was not provided';
@@ -5360,12 +9617,12 @@
       throw 'edits is required but was not provided';
     }
   }
-  factory TextDocumentEdit.fromJson(Map<String, dynamic> json) {
+  static TextDocumentEdit fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new VersionedTextDocumentIdentifier.fromJson(json['textDocument'])
+        ? VersionedTextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
     final edits = json['edits']
-        ?.map((item) => item != null ? new TextEdit.fromJson(item) : null)
+        ?.map((item) => item != null ? TextEdit.fromJson(item) : null)
         ?.cast<TextEdit>()
         ?.toList();
     return new TextDocumentEdit(textDocument, edits);
@@ -5394,6 +9651,27 @@
             (obj['edits'].length == 0 ||
                 obj['edits'].every((item) => TextEdit.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentEdit) {
+      return textDocument == other.textDocument &&
+          listEqual(edits, other.edits, (TextEdit a, TextEdit b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, edits.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class TextDocumentIdentifier implements ToJsonable {
@@ -5402,7 +9680,7 @@
       throw 'uri is required but was not provided';
     }
   }
-  factory TextDocumentIdentifier.fromJson(Map<String, dynamic> json) {
+  static TextDocumentIdentifier fromJson(Map<String, dynamic> json) {
     final uri = json['uri'];
     return new TextDocumentIdentifier(uri);
   }
@@ -5421,6 +9699,24 @@
         obj.containsKey('uri') &&
         obj['uri'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentIdentifier) {
+      return uri == other.uri && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, uri.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class TextDocumentItem implements ToJsonable {
@@ -5438,7 +9734,7 @@
       throw 'text is required but was not provided';
     }
   }
-  factory TextDocumentItem.fromJson(Map<String, dynamic> json) {
+  static TextDocumentItem fromJson(Map<String, dynamic> json) {
     final uri = json['uri'];
     final languageId = json['languageId'];
     final version = json['version'];
@@ -5455,8 +9751,8 @@
   /// The text document's URI.
   final String uri;
 
-  /// The version number of this document (it will
-  /// increase after each change, including undo/redo).
+  /// The version number of this document (it will increase after each change,
+  /// including undo/redo).
   final num version;
 
   Map<String, dynamic> toJson() {
@@ -5481,6 +9777,31 @@
         obj.containsKey('text') &&
         obj['text'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentItem) {
+      return uri == other.uri &&
+          languageId == other.languageId &&
+          version == other.version &&
+          text == other.text &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, uri.hashCode);
+    hash = JenkinsSmiHash.combine(hash, languageId.hashCode);
+    hash = JenkinsSmiHash.combine(hash, version.hashCode);
+    hash = JenkinsSmiHash.combine(hash, text.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class TextDocumentPositionParams implements ToJsonable {
@@ -5492,13 +9813,12 @@
       throw 'position is required but was not provided';
     }
   }
-  factory TextDocumentPositionParams.fromJson(Map<String, dynamic> json) {
+  static TextDocumentPositionParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
-    final position = json['position'] != null
-        ? new Position.fromJson(json['position'])
-        : null;
+    final position =
+        json['position'] != null ? Position.fromJson(json['position']) : null;
     return new TextDocumentPositionParams(textDocument, position);
   }
 
@@ -5524,21 +9844,41 @@
         obj.containsKey('position') &&
         Position.canParse(obj['position']);
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentPositionParams) {
+      return textDocument == other.textDocument &&
+          position == other.position &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, position.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class TextDocumentRegistrationOptions implements ToJsonable {
   TextDocumentRegistrationOptions(this.documentSelector);
-  factory TextDocumentRegistrationOptions.fromJson(Map<String, dynamic> json) {
+  static TextDocumentRegistrationOptions fromJson(Map<String, dynamic> json) {
     final documentSelector = json['documentSelector']
-        ?.map((item) => item != null ? new DocumentFilter.fromJson(item) : null)
+        ?.map((item) => item != null ? DocumentFilter.fromJson(item) : null)
         ?.cast<DocumentFilter>()
         ?.toList();
     return new TextDocumentRegistrationOptions(documentSelector);
   }
 
-  /// A document selector to identify the scope of the
-  /// registration. If set to null the document selector
-  /// provided on the client side will be used.
+  /// A document selector to identify the scope of the registration. If set to
+  /// null the document selector provided on the client side will be used.
   final List<DocumentFilter> documentSelector;
 
   Map<String, dynamic> toJson() {
@@ -5555,6 +9895,24 @@
                 obj['documentSelector']
                     .every((item) => DocumentFilter.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentRegistrationOptions) {
+      return documentSelector == other.documentSelector && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, documentSelector.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Represents reasons why a text document is saved.
@@ -5562,7 +9920,7 @@
   const TextDocumentSaveReason._(this._value);
   const TextDocumentSaveReason.fromJson(this._value);
 
-  final Object _value;
+  final num _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
@@ -5574,8 +9932,8 @@
     return false;
   }
 
-  /// Manually triggered, e.g. by the user pressing
-  /// save, by starting debugging, or by an API call.
+  /// Manually triggered, e.g. by the user pressing save, by starting debugging,
+  /// or by an API call.
   static const Manual = const TextDocumentSaveReason._(1);
 
   /// Automatic after a delay.
@@ -5598,25 +9956,22 @@
 class TextDocumentSaveRegistrationOptions
     implements TextDocumentRegistrationOptions, ToJsonable {
   TextDocumentSaveRegistrationOptions(this.includeText, this.documentSelector);
-  factory TextDocumentSaveRegistrationOptions.fromJson(
+  static TextDocumentSaveRegistrationOptions fromJson(
       Map<String, dynamic> json) {
     final includeText = json['includeText'];
     final documentSelector = json['documentSelector']
-        ?.map((item) => item != null ? new DocumentFilter.fromJson(item) : null)
+        ?.map((item) => item != null ? DocumentFilter.fromJson(item) : null)
         ?.cast<DocumentFilter>()
         ?.toList();
     return new TextDocumentSaveRegistrationOptions(
         includeText, documentSelector);
   }
 
-  /// A document selector to identify the scope of the
-  /// registration. If set to null the document
-  /// selector provided on the client side will be
-  /// used.
+  /// A document selector to identify the scope of the registration. If set to
+  /// null the document selector provided on the client side will be used.
   final List<DocumentFilter> documentSelector;
 
-  /// The client is supposed to include the content on
-  /// save.
+  /// The client is supposed to include the content on save.
   final bool includeText;
 
   Map<String, dynamic> toJson() {
@@ -5636,15 +9991,36 @@
                 obj['documentSelector']
                     .every((item) => DocumentFilter.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentSaveRegistrationOptions) {
+      return includeText == other.includeText &&
+          documentSelector == other.documentSelector &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, includeText.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentSelector.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
-/// Defines how the host (editor) should sync document
-/// changes to the language server.
+/// Defines how the host (editor) should sync document changes to the language
+/// server.
 class TextDocumentSyncKind {
   const TextDocumentSyncKind._(this._value);
   const TextDocumentSyncKind.fromJson(this._value);
 
-  final Object _value;
+  final num _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
@@ -5659,13 +10035,11 @@
   /// Documents should not be synced at all.
   static const None = const TextDocumentSyncKind._(0);
 
-  /// Documents are synced by always sending the
-  /// full content of the document.
+  /// Documents are synced by always sending the full content of the document.
   static const Full = const TextDocumentSyncKind._(1);
 
-  /// Documents are synced by sending the full
-  /// content on open. After that only incremental
-  /// updates to the document are send.
+  /// Documents are synced by sending the full content on open. After that only
+  /// incremental updates to the document are send.
   static const Incremental = const TextDocumentSyncKind._(2);
 
   Object toJson() => _value;
@@ -5682,39 +10056,35 @@
 class TextDocumentSyncOptions implements ToJsonable {
   TextDocumentSyncOptions(this.openClose, this.change, this.willSave,
       this.willSaveWaitUntil, this.save);
-  factory TextDocumentSyncOptions.fromJson(Map<String, dynamic> json) {
+  static TextDocumentSyncOptions fromJson(Map<String, dynamic> json) {
     final openClose = json['openClose'];
     final change = json['change'] != null
-        ? new TextDocumentSyncKind.fromJson(json['change'])
+        ? TextDocumentSyncKind.fromJson(json['change'])
         : null;
     final willSave = json['willSave'];
     final willSaveWaitUntil = json['willSaveWaitUntil'];
     final save =
-        json['save'] != null ? new SaveOptions.fromJson(json['save']) : null;
+        json['save'] != null ? SaveOptions.fromJson(json['save']) : null;
     return new TextDocumentSyncOptions(
         openClose, change, willSave, willSaveWaitUntil, save);
   }
 
-  /// Change notifications are sent to the server.
-  /// See TextDocumentSyncKind.None,
-  /// TextDocumentSyncKind.Full and
-  /// TextDocumentSyncKind.Incremental. If omitted
-  /// it defaults to TextDocumentSyncKind.None.
+  /// Change notifications are sent to the server. See
+  /// TextDocumentSyncKind.None, TextDocumentSyncKind.Full and
+  /// TextDocumentSyncKind.Incremental. If omitted it defaults to
+  /// TextDocumentSyncKind.None.
   final TextDocumentSyncKind change;
 
-  /// Open and close notifications are sent to the
-  /// server.
+  /// Open and close notifications are sent to the server.
   final bool openClose;
 
   /// Save notifications are sent to the server.
   final SaveOptions save;
 
-  /// Will save notifications are sent to the
-  /// server.
+  /// Will save notifications are sent to the server.
   final bool willSave;
 
-  /// Will save wait until requests are sent to the
-  /// server.
+  /// Will save wait until requests are sent to the server.
   final bool willSaveWaitUntil;
 
   Map<String, dynamic> toJson() {
@@ -5740,6 +10110,33 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextDocumentSyncOptions) {
+      return openClose == other.openClose &&
+          change == other.change &&
+          willSave == other.willSave &&
+          willSaveWaitUntil == other.willSaveWaitUntil &&
+          save == other.save &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, openClose.hashCode);
+    hash = JenkinsSmiHash.combine(hash, change.hashCode);
+    hash = JenkinsSmiHash.combine(hash, willSave.hashCode);
+    hash = JenkinsSmiHash.combine(hash, willSaveWaitUntil.hashCode);
+    hash = JenkinsSmiHash.combine(hash, save.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class TextEdit implements ToJsonable {
@@ -5751,20 +10148,17 @@
       throw 'newText is required but was not provided';
     }
   }
-  factory TextEdit.fromJson(Map<String, dynamic> json) {
-    final range =
-        json['range'] != null ? new Range.fromJson(json['range']) : null;
+  static TextEdit fromJson(Map<String, dynamic> json) {
+    final range = json['range'] != null ? Range.fromJson(json['range']) : null;
     final newText = json['newText'];
     return new TextEdit(range, newText);
   }
 
-  /// The string to be inserted. For delete
-  /// operations use an empty string.
+  /// The string to be inserted. For delete operations use an empty string.
   final String newText;
 
-  /// The range of the text document to be
-  /// manipulated. To insert text into a document
-  /// create a range where start === end.
+  /// The range of the text document to be manipulated. To insert text into a
+  /// document create a range where start === end.
   final Range range;
 
   Map<String, dynamic> toJson() {
@@ -5782,6 +10176,25 @@
         obj.containsKey('newText') &&
         obj['newText'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is TextEdit) {
+      return range == other.range && newText == other.newText && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, range.hashCode);
+    hash = JenkinsSmiHash.combine(hash, newText.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// General parameters to unregister a capability.
@@ -5794,15 +10207,14 @@
       throw 'method is required but was not provided';
     }
   }
-  factory Unregistration.fromJson(Map<String, dynamic> json) {
+  static Unregistration fromJson(Map<String, dynamic> json) {
     final id = json['id'];
     final method = json['method'];
     return new Unregistration(id, method);
   }
 
-  /// The id used to unregister the request or
-  /// notification. Usually an id provided during
-  /// the register request.
+  /// The id used to unregister the request or notification. Usually an id
+  /// provided during the register request.
   final String id;
 
   /// The method / capability to unregister for.
@@ -5822,6 +10234,25 @@
         obj.containsKey('method') &&
         obj['method'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is Unregistration) {
+      return id == other.id && method == other.method && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, id.hashCode);
+    hash = JenkinsSmiHash.combine(hash, method.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class UnregistrationParams implements ToJsonable {
@@ -5830,9 +10261,9 @@
       throw 'unregisterations is required but was not provided';
     }
   }
-  factory UnregistrationParams.fromJson(Map<String, dynamic> json) {
+  static UnregistrationParams fromJson(Map<String, dynamic> json) {
     final unregisterations = json['unregisterations']
-        ?.map((item) => item != null ? new Unregistration.fromJson(item) : null)
+        ?.map((item) => item != null ? Unregistration.fromJson(item) : null)
         ?.cast<Unregistration>()
         ?.toList();
     return new UnregistrationParams(unregisterations);
@@ -5855,6 +10286,26 @@
                 obj['unregisterations']
                     .every((item) => Unregistration.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is UnregistrationParams) {
+      return listEqual(unregisterations, other.unregisterations,
+              (Unregistration a, Unregistration b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, unregisterations.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class VersionedTextDocumentIdentifier
@@ -5864,7 +10315,7 @@
       throw 'uri is required but was not provided';
     }
   }
-  factory VersionedTextDocumentIdentifier.fromJson(Map<String, dynamic> json) {
+  static VersionedTextDocumentIdentifier fromJson(Map<String, dynamic> json) {
     final version = json['version'];
     final uri = json['uri'];
     return new VersionedTextDocumentIdentifier(version, uri);
@@ -5873,19 +10324,14 @@
   /// The text document's URI.
   final String uri;
 
-  /// The version number of this document. If a
-  /// versioned text document identifier is sent
-  /// from the server to the client and the file is
-  /// not open in the editor (the server has not
-  /// received an open notification before) the
-  /// server can send `null` to indicate that the
-  /// version is known and the content on disk is
-  /// the truth (as speced with document content
-  /// ownership).
+  /// The version number of this document. If a versioned text document
+  /// identifier is sent from the server to the client and the file is not open
+  /// in the editor (the server has not received an open notification before)
+  /// the server can send `null` to indicate that the version is known and the
+  /// content on disk is the truth (as speced with document content ownership).
   ///
-  /// The version number of a document will increase
-  /// after each change, including undo/redo. The
-  /// number doesn't need to be consecutive.
+  /// The version number of a document will increase after each change,
+  /// including undo/redo. The number doesn't need to be consecutive.
   final num version;
 
   Map<String, dynamic> toJson() {
@@ -5902,13 +10348,32 @@
         obj.containsKey('uri') &&
         obj['uri'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is VersionedTextDocumentIdentifier) {
+      return version == other.version && uri == other.uri && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, version.hashCode);
+    hash = JenkinsSmiHash.combine(hash, uri.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class WatchKind {
   const WatchKind._(this._value);
   const WatchKind.fromJson(this._value);
 
-  final Object _value;
+  final num _value;
 
   static bool canParse(Object obj) {
     switch (obj) {
@@ -5940,8 +10405,7 @@
   bool operator ==(o) => o is WatchKind && o._value == _value;
 }
 
-/// The parameters send in a will save text
-/// document notification.
+/// The parameters send in a will save text document notification.
 class WillSaveTextDocumentParams implements ToJsonable {
   WillSaveTextDocumentParams(this.textDocument, this.reason) {
     if (textDocument == null) {
@@ -5951,9 +10415,9 @@
       throw 'reason is required but was not provided';
     }
   }
-  factory WillSaveTextDocumentParams.fromJson(Map<String, dynamic> json) {
+  static WillSaveTextDocumentParams fromJson(Map<String, dynamic> json) {
     final textDocument = json['textDocument'] != null
-        ? new TextDocumentIdentifier.fromJson(json['textDocument'])
+        ? TextDocumentIdentifier.fromJson(json['textDocument'])
         : null;
     final reason = json['reason'];
     return new WillSaveTextDocumentParams(textDocument, reason);
@@ -5980,50 +10444,439 @@
         obj.containsKey('reason') &&
         obj['reason'] is num;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is WillSaveTextDocumentParams) {
+      return textDocument == other.textDocument &&
+          reason == other.reason &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, textDocument.hashCode);
+    hash = JenkinsSmiHash.combine(hash, reason.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// Workspace specific client capabilities.
 class WorkspaceClientCapabilities implements ToJsonable {
-  WorkspaceClientCapabilities(this.applyEdit, this.documentChanges,
-      this.resourceOperations, this.failureHandling);
-  factory WorkspaceClientCapabilities.fromJson(Map<String, dynamic> json) {
+  WorkspaceClientCapabilities(
+      this.applyEdit,
+      this.workspaceEdit,
+      this.didChangeConfiguration,
+      this.didChangeWatchedFiles,
+      this.symbol,
+      this.executeCommand,
+      this.workspaceFolders,
+      this.configuration);
+  static WorkspaceClientCapabilities fromJson(Map<String, dynamic> json) {
     final applyEdit = json['applyEdit'];
-    final documentChanges = json['documentChanges'];
-    final resourceOperations = json['resourceOperations']
-        ?.map((item) =>
-            item != null ? new ResourceOperationKind.fromJson(item) : null)
-        ?.cast<ResourceOperationKind>()
-        ?.toList();
-    final failureHandling = json['failureHandling'] != null
-        ? new FailureHandlingKind.fromJson(json['failureHandling'])
+    final workspaceEdit = json['workspaceEdit'] != null
+        ? WorkspaceClientCapabilitiesWorkspaceEdit.fromJson(
+            json['workspaceEdit'])
         : null;
+    final didChangeConfiguration = json['didChangeConfiguration'] != null
+        ? WorkspaceClientCapabilitiesDidChangeConfiguration.fromJson(
+            json['didChangeConfiguration'])
+        : null;
+    final didChangeWatchedFiles = json['didChangeWatchedFiles'] != null
+        ? WorkspaceClientCapabilitiesDidChangeWatchedFiles.fromJson(
+            json['didChangeWatchedFiles'])
+        : null;
+    final symbol = json['symbol'] != null
+        ? WorkspaceClientCapabilitiesSymbol.fromJson(json['symbol'])
+        : null;
+    final executeCommand = json['executeCommand'] != null
+        ? WorkspaceClientCapabilitiesExecuteCommand.fromJson(
+            json['executeCommand'])
+        : null;
+    final workspaceFolders = json['workspaceFolders'];
+    final configuration = json['configuration'];
     return new WorkspaceClientCapabilities(
-        applyEdit, documentChanges, resourceOperations, failureHandling);
+        applyEdit,
+        workspaceEdit,
+        didChangeConfiguration,
+        didChangeWatchedFiles,
+        symbol,
+        executeCommand,
+        workspaceFolders,
+        configuration);
   }
 
-  /// The client supports applying batch edits to
-  /// the workspace by supporting the request
-  /// 'workspace/applyEdit'
+  /// The client supports applying batch edits to the workspace by supporting
+  /// the request 'workspace/applyEdit'
   final bool applyEdit;
 
-  /// The client supports versioned document
-  /// changes in `WorkspaceEdit`s
-  final bool documentChanges;
+  /// The client supports `workspace/configuration` requests.
+  ///
+  /// Since 3.6.0
+  final bool configuration;
 
-  /// The failure handling strategy of a client if
-  /// applying the workspace edit failes.
-  final FailureHandlingKind failureHandling;
+  /// Capabilities specific to the `workspace/didChangeConfiguration`
+  /// notification.
+  final WorkspaceClientCapabilitiesDidChangeConfiguration
+      didChangeConfiguration;
 
-  /// The resource operations the client supports.
-  /// Clients should at least support 'create',
-  /// 'rename' and 'delete' files and folders.
-  final List<ResourceOperationKind> resourceOperations;
+  /// Capabilities specific to the `workspace/didChangeWatchedFiles`
+  /// notification.
+  final WorkspaceClientCapabilitiesDidChangeWatchedFiles didChangeWatchedFiles;
+
+  /// Capabilities specific to the `workspace/executeCommand` request.
+  final WorkspaceClientCapabilitiesExecuteCommand executeCommand;
+
+  /// Capabilities specific to the `workspace/symbol` request.
+  final WorkspaceClientCapabilitiesSymbol symbol;
+
+  /// Capabilities specific to `WorkspaceEdit`s
+  final WorkspaceClientCapabilitiesWorkspaceEdit workspaceEdit;
+
+  /// The client has support for workspace folders.
+  ///
+  /// Since 3.6.0
+  final bool workspaceFolders;
 
   Map<String, dynamic> toJson() {
     Map<String, dynamic> __result = {};
     if (applyEdit != null) {
       __result['applyEdit'] = applyEdit;
     }
+    if (workspaceEdit != null) {
+      __result['workspaceEdit'] = workspaceEdit;
+    }
+    if (didChangeConfiguration != null) {
+      __result['didChangeConfiguration'] = didChangeConfiguration;
+    }
+    if (didChangeWatchedFiles != null) {
+      __result['didChangeWatchedFiles'] = didChangeWatchedFiles;
+    }
+    if (symbol != null) {
+      __result['symbol'] = symbol;
+    }
+    if (executeCommand != null) {
+      __result['executeCommand'] = executeCommand;
+    }
+    if (workspaceFolders != null) {
+      __result['workspaceFolders'] = workspaceFolders;
+    }
+    if (configuration != null) {
+      __result['configuration'] = configuration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is WorkspaceClientCapabilities) {
+      return applyEdit == other.applyEdit &&
+          workspaceEdit == other.workspaceEdit &&
+          didChangeConfiguration == other.didChangeConfiguration &&
+          didChangeWatchedFiles == other.didChangeWatchedFiles &&
+          symbol == other.symbol &&
+          executeCommand == other.executeCommand &&
+          workspaceFolders == other.workspaceFolders &&
+          configuration == other.configuration &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, applyEdit.hashCode);
+    hash = JenkinsSmiHash.combine(hash, workspaceEdit.hashCode);
+    hash = JenkinsSmiHash.combine(hash, didChangeConfiguration.hashCode);
+    hash = JenkinsSmiHash.combine(hash, didChangeWatchedFiles.hashCode);
+    hash = JenkinsSmiHash.combine(hash, symbol.hashCode);
+    hash = JenkinsSmiHash.combine(hash, executeCommand.hashCode);
+    hash = JenkinsSmiHash.combine(hash, workspaceFolders.hashCode);
+    hash = JenkinsSmiHash.combine(hash, configuration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class WorkspaceClientCapabilitiesDidChangeConfiguration implements ToJsonable {
+  WorkspaceClientCapabilitiesDidChangeConfiguration(this.dynamicRegistration);
+  static WorkspaceClientCapabilitiesDidChangeConfiguration fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new WorkspaceClientCapabilitiesDidChangeConfiguration(
+        dynamicRegistration);
+  }
+
+  /// Did change configuration notification supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is WorkspaceClientCapabilitiesDidChangeConfiguration) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class WorkspaceClientCapabilitiesDidChangeWatchedFiles implements ToJsonable {
+  WorkspaceClientCapabilitiesDidChangeWatchedFiles(this.dynamicRegistration);
+  static WorkspaceClientCapabilitiesDidChangeWatchedFiles fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new WorkspaceClientCapabilitiesDidChangeWatchedFiles(
+        dynamicRegistration);
+  }
+
+  /// Did change watched files notification supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is WorkspaceClientCapabilitiesDidChangeWatchedFiles) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class WorkspaceClientCapabilitiesExecuteCommand implements ToJsonable {
+  WorkspaceClientCapabilitiesExecuteCommand(this.dynamicRegistration);
+  static WorkspaceClientCapabilitiesExecuteCommand fromJson(
+      Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    return new WorkspaceClientCapabilitiesExecuteCommand(dynamicRegistration);
+  }
+
+  /// Execute command supports dynamic registration.
+  final bool dynamicRegistration;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is WorkspaceClientCapabilitiesExecuteCommand) {
+      return dynamicRegistration == other.dynamicRegistration && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class WorkspaceClientCapabilitiesSymbol implements ToJsonable {
+  WorkspaceClientCapabilitiesSymbol(this.dynamicRegistration, this.symbolKind);
+  static WorkspaceClientCapabilitiesSymbol fromJson(Map<String, dynamic> json) {
+    final dynamicRegistration = json['dynamicRegistration'];
+    final symbolKind = json['symbolKind'] != null
+        ? WorkspaceClientCapabilitiesSymbolKind.fromJson(json['symbolKind'])
+        : null;
+    return new WorkspaceClientCapabilitiesSymbol(
+        dynamicRegistration, symbolKind);
+  }
+
+  /// Symbol request supports dynamic registration.
+  final bool dynamicRegistration;
+
+  /// Specific capabilities for the `SymbolKind` in the `workspace/symbol`
+  /// request.
+  final WorkspaceClientCapabilitiesSymbolKind symbolKind;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (dynamicRegistration != null) {
+      __result['dynamicRegistration'] = dynamicRegistration;
+    }
+    if (symbolKind != null) {
+      __result['symbolKind'] = symbolKind;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is WorkspaceClientCapabilitiesSymbol) {
+      return dynamicRegistration == other.dynamicRegistration &&
+          symbolKind == other.symbolKind &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, dynamicRegistration.hashCode);
+    hash = JenkinsSmiHash.combine(hash, symbolKind.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class WorkspaceClientCapabilitiesSymbolKind implements ToJsonable {
+  WorkspaceClientCapabilitiesSymbolKind(this.valueSet);
+  static WorkspaceClientCapabilitiesSymbolKind fromJson(
+      Map<String, dynamic> json) {
+    final valueSet = json['valueSet']
+        ?.map((item) => item != null ? SymbolKind.fromJson(item) : null)
+        ?.cast<SymbolKind>()
+        ?.toList();
+    return new WorkspaceClientCapabilitiesSymbolKind(valueSet);
+  }
+
+  /// The symbol kind values the client supports. When this property exists the
+  /// client also guarantees that it will handle values outside its set
+  /// gracefully and falls back to a default value when unknown.
+  ///
+  /// If this property is not present the client only supports the symbol kinds
+  /// from `File` to `Array` as defined in the initial version of the protocol.
+  final List<SymbolKind> valueSet;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
+    if (valueSet != null) {
+      __result['valueSet'] = valueSet;
+    }
+    return __result;
+  }
+
+  static bool canParse(Object obj) {
+    return obj is Map<String, dynamic>;
+  }
+
+  @override
+  bool operator ==(other) {
+    if (other is WorkspaceClientCapabilitiesSymbolKind) {
+      return listEqual(valueSet, other.valueSet,
+              (SymbolKind a, SymbolKind b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, valueSet.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
+}
+
+class WorkspaceClientCapabilitiesWorkspaceEdit implements ToJsonable {
+  WorkspaceClientCapabilitiesWorkspaceEdit(
+      this.documentChanges, this.resourceOperations, this.failureHandling);
+  static WorkspaceClientCapabilitiesWorkspaceEdit fromJson(
+      Map<String, dynamic> json) {
+    final documentChanges = json['documentChanges'];
+    final resourceOperations = json['resourceOperations']
+        ?.map((item) =>
+            item != null ? ResourceOperationKind.fromJson(item) : null)
+        ?.cast<ResourceOperationKind>()
+        ?.toList();
+    final failureHandling = json['failureHandling'] != null
+        ? FailureHandlingKind.fromJson(json['failureHandling'])
+        : null;
+    return new WorkspaceClientCapabilitiesWorkspaceEdit(
+        documentChanges, resourceOperations, failureHandling);
+  }
+
+  /// The client supports versioned document changes in `WorkspaceEdit`s
+  final bool documentChanges;
+
+  /// The failure handling strategy of a client if applying the workspace edit
+  /// fails.
+  final FailureHandlingKind failureHandling;
+
+  /// The resource operations the client supports. Clients should at least
+  /// support 'create', 'rename' and 'delete' files and folders.
+  final List<ResourceOperationKind> resourceOperations;
+
+  Map<String, dynamic> toJson() {
+    Map<String, dynamic> __result = {};
     if (documentChanges != null) {
       __result['documentChanges'] = documentChanges;
     }
@@ -6039,16 +10892,61 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is WorkspaceClientCapabilitiesWorkspaceEdit) {
+      return documentChanges == other.documentChanges &&
+          listEqual(resourceOperations, other.resourceOperations,
+              (ResourceOperationKind a, ResourceOperationKind b) => a == b) &&
+          failureHandling == other.failureHandling &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, documentChanges.hashCode);
+    hash = JenkinsSmiHash.combine(hash, resourceOperations.hashCode);
+    hash = JenkinsSmiHash.combine(hash, failureHandling.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class WorkspaceEdit implements ToJsonable {
   WorkspaceEdit(this.changes, this.documentChanges);
-  factory WorkspaceEdit.fromJson(Map<String, dynamic> json) {
-    final changes = json['changes'];
-    final documentChanges = json['documentChanges']
-        ?.map((item) => item)
-        ?.cast<FileOperation>()
-        ?.toList();
+  static WorkspaceEdit fromJson(Map<String, dynamic> json) {
+    final changes = json['changes']
+        ?.map((key, value) => new MapEntry(
+            key,
+            value
+                ?.map((item) => item != null ? TextEdit.fromJson(item) : null)
+                ?.cast<TextEdit>()
+                ?.toList()))
+        ?.cast<String, List<TextEdit>>();
+    final documentChanges = (json['documentChanges'] is List && (json['documentChanges'].length == 0 || json['documentChanges'].every((item) => TextDocumentEdit.canParse(item))))
+        ? new Either2<List<TextDocumentEdit>, List<Either4<TextDocumentEdit, CreateFile, RenameFile, DeleteFile>>>.t1(json['documentChanges']
+            ?.map(
+                (item) => item != null ? TextDocumentEdit.fromJson(item) : null)
+            ?.cast<TextDocumentEdit>()
+            ?.toList())
+        : ((json['documentChanges'] is List && (json['documentChanges'].length == 0 || json['documentChanges'].every((item) => (TextDocumentEdit.canParse(item) || CreateFile.canParse(item) || RenameFile.canParse(item) || DeleteFile.canParse(item)))))
+            ? new Either2<List<TextDocumentEdit>, List<Either4<TextDocumentEdit, CreateFile, RenameFile, DeleteFile>>>.t2(json['documentChanges']
+                ?.map((item) => TextDocumentEdit.canParse(item)
+                    ? new Either4<TextDocumentEdit, CreateFile, RenameFile, DeleteFile>.t1(
+                        item != null ? TextDocumentEdit.fromJson(item) : null)
+                    : (CreateFile.canParse(item)
+                        ? new Either4<TextDocumentEdit, CreateFile, RenameFile, DeleteFile>.t2(
+                            item != null ? CreateFile.fromJson(item) : null)
+                        : (RenameFile.canParse(item) ? new Either4<TextDocumentEdit, CreateFile, RenameFile, DeleteFile>.t3(item != null ? RenameFile.fromJson(item) : null) : (DeleteFile.canParse(item) ? new Either4<TextDocumentEdit, CreateFile, RenameFile, DeleteFile>.t4(item != null ? DeleteFile.fromJson(item) : null) : (item == null ? null : (throw '''${item} was not one of (TextDocumentEdit, CreateFile, RenameFile, DeleteFile)'''))))))
+                ?.cast<Either4<TextDocumentEdit, CreateFile, RenameFile, DeleteFile>>()
+                ?.toList())
+            : (json['documentChanges'] == null ? null : (throw '''${json['documentChanges']} was not one of (List<TextDocumentEdit>, List<Either4<TextDocumentEdit, CreateFile, RenameFile, DeleteFile>>)''')));
     return new WorkspaceEdit(changes, documentChanges);
   }
 
@@ -6056,26 +10954,21 @@
   final Map<String, List<TextEdit>> changes;
 
   /// Depending on the client capability
-  /// `workspace.workspaceEdit.resourceOperations`
-  /// document changes are either an array of
-  /// `TextDocumentEdit`s to express changes to n
-  /// different text documents where each text
-  /// document edit addresses a specific version
-  /// of a text document. Or it can contain above
-  /// `TextDocumentEdit`s mixed with create,
-  /// rename and delete file / folder operations.
+  /// `workspace.workspaceEdit.resourceOperations` document changes are either
+  /// an array of `TextDocumentEdit`s to express changes to n different text
+  /// documents where each text document edit addresses a specific version of a
+  /// text document. Or it can contain above `TextDocumentEdit`s mixed with
+  /// create, rename and delete file / folder operations.
   ///
-  /// Whether a client supports versioned document
-  /// edits is expressed via
-  /// `workspace.workspaceEdit.documentChanges`
-  /// client capability.
+  /// Whether a client supports versioned document edits is expressed via
+  /// `workspace.workspaceEdit.documentChanges` client capability.
   ///
-  /// If a client neither supports
-  /// `documentChanges` nor
-  /// `workspace.workspaceEdit.resourceOperations`
-  /// then only plain `TextEdit`s using the
-  /// `changes` property are supported.
-  final List<FileOperation> documentChanges;
+  /// If a client neither supports `documentChanges` nor
+  /// `workspace.workspaceEdit.resourceOperations` then only plain `TextEdit`s
+  /// using the `changes` property are supported.
+  final Either2<List<TextDocumentEdit>,
+          List<Either4<TextDocumentEdit, CreateFile, RenameFile, DeleteFile>>>
+      documentChanges;
 
   Map<String, dynamic> toJson() {
     Map<String, dynamic> __result = {};
@@ -6091,6 +10984,28 @@
   static bool canParse(Object obj) {
     return obj is Map<String, dynamic>;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is WorkspaceEdit) {
+      return mapEqual(changes, other.changes,
+              (List<TextEdit> a, List<TextEdit> b) => a == b) &&
+          documentChanges == other.documentChanges &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, changes.hashCode);
+    hash = JenkinsSmiHash.combine(hash, documentChanges.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 class WorkspaceFolder implements ToJsonable {
@@ -6102,18 +11017,16 @@
       throw 'name is required but was not provided';
     }
   }
-  factory WorkspaceFolder.fromJson(Map<String, dynamic> json) {
+  static WorkspaceFolder fromJson(Map<String, dynamic> json) {
     final uri = json['uri'];
     final name = json['name'];
     return new WorkspaceFolder(uri, name);
   }
 
-  /// The name of the workspace folder. Defaults
-  /// to the uri's basename.
+  /// The name of the workspace folder. Defaults to the uri's basename.
   final String name;
 
-  /// The associated URI for this workspace
-  /// folder.
+  /// The associated URI for this workspace folder.
   final String uri;
 
   Map<String, dynamic> toJson() {
@@ -6130,6 +11043,25 @@
         obj.containsKey('name') &&
         obj['name'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is WorkspaceFolder) {
+      return uri == other.uri && name == other.name && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, uri.hashCode);
+    hash = JenkinsSmiHash.combine(hash, name.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// The workspace folder change event.
@@ -6142,15 +11074,13 @@
       throw 'removed is required but was not provided';
     }
   }
-  factory WorkspaceFoldersChangeEvent.fromJson(Map<String, dynamic> json) {
+  static WorkspaceFoldersChangeEvent fromJson(Map<String, dynamic> json) {
     final added = json['added']
-        ?.map(
-            (item) => item != null ? new WorkspaceFolder.fromJson(item) : null)
+        ?.map((item) => item != null ? WorkspaceFolder.fromJson(item) : null)
         ?.cast<WorkspaceFolder>()
         ?.toList();
     final removed = json['removed']
-        ?.map(
-            (item) => item != null ? new WorkspaceFolder.fromJson(item) : null)
+        ?.map((item) => item != null ? WorkspaceFolder.fromJson(item) : null)
         ?.cast<WorkspaceFolder>()
         ?.toList();
     return new WorkspaceFoldersChangeEvent(added, removed);
@@ -6183,6 +11113,29 @@
                 obj['removed']
                     .every((item) => WorkspaceFolder.canParse(item))));
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is WorkspaceFoldersChangeEvent) {
+      return listEqual(added, other.added,
+              (WorkspaceFolder a, WorkspaceFolder b) => a == b) &&
+          listEqual(removed, other.removed,
+              (WorkspaceFolder a, WorkspaceFolder b) => a == b) &&
+          true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, added.hashCode);
+    hash = JenkinsSmiHash.combine(hash, removed.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
 
 /// The parameters of a Workspace Symbol Request.
@@ -6192,7 +11145,7 @@
       throw 'query is required but was not provided';
     }
   }
-  factory WorkspaceSymbolParams.fromJson(Map<String, dynamic> json) {
+  static WorkspaceSymbolParams fromJson(Map<String, dynamic> json) {
     final query = json['query'];
     return new WorkspaceSymbolParams(query);
   }
@@ -6211,4 +11164,22 @@
         obj.containsKey('query') &&
         obj['query'] is String;
   }
+
+  @override
+  bool operator ==(other) {
+    if (other is WorkspaceSymbolParams) {
+      return query == other.query && true;
+    }
+    return false;
+  }
+
+  @override
+  int get hashCode {
+    int hash = 0;
+    hash = JenkinsSmiHash.combine(hash, query.hashCode);
+    return JenkinsSmiHash.finish(hash);
+  }
+
+  @override
+  String toString() => jsonEncoder.convert(toJson());
 }
diff --git a/pkg/analysis_server/lib/lsp_protocol/protocol_special.dart b/pkg/analysis_server/lib/lsp_protocol/protocol_special.dart
index 35ae774..fd526fe 100644
--- a/pkg/analysis_server/lib/lsp_protocol/protocol_special.dart
+++ b/pkg/analysis_server/lib/lsp_protocol/protocol_special.dart
@@ -2,6 +2,12 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'dart:async';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+
+const jsonRpcVersion = '2.0';
+
 Object id(Object obj) => obj;
 
 Object specToJson(Object obj) {
@@ -145,7 +151,54 @@
       map((t) => t == o, (t) => t == o, (t) => t == o, (t) => t == o);
 }
 
-class FileOperation {}
+class ErrorOr<T> extends Either2<ResponseError, T> {
+  ErrorOr.error(ResponseError error) : super.t1(error);
+  ErrorOr.success([T result]) : super.t2(result);
+
+  /// Returns the error or throws if object is not an error. Check [isError]
+  /// before accessing [error].
+  ResponseError get error {
+    return _which == 1 ? _t1 : (throw 'Value is not an error');
+  }
+
+  /// Returns true if this object is an error, false if it is a result. Prefer
+  /// [mapResult] instead of checking this flag if [errors] will simply be
+  /// propagated as-is.
+  bool get isError => _which == 1;
+
+  /// Returns the result or throws if this object is an error. Check [isError]
+  /// before accessing [result]. It is valid for this to return null is the
+  /// object does not represent an error but the resulting value was null.
+  T get result {
+    return _which == 2 ? _t2 : (throw 'Value is not a result');
+  }
+
+  /// If this object is a result, maps [result] through [f], otherwise returns
+  /// a new error object representing [error].
+  FutureOr<ErrorOr<N>> mapResult<N>(FutureOr<ErrorOr<N>> Function(T) f) {
+    return isError
+        // Re-wrap the error using our new type arg
+        ? new ErrorOr<N>.error(error)
+        // Otherwise call the map function
+        : f(result);
+  }
+}
+
+/// A base class containing the fields common to RequestMessage and
+/// NotificationMessage to simplify handling.
+abstract class IncomingMessage {
+  Method get method;
+  dynamic get params;
+}
+
+abstract class ServerErrorCodes {
+  // JSON-RPC reserves -32000 to -32099 for implementation-defined server-errors.
+  static const ServerAlreadyStarted = const ErrorCodes(-32000);
+  static const UnhandledError = const ErrorCodes(-32001);
+  static const ServerAlreadyInitialized = const ErrorCodes(-32002);
+  static const InvalidFilePath = const ErrorCodes(-32003);
+  static const InvalidFileLineCol = const ErrorCodes(-32004);
+}
 
 abstract class ToJsonable {
   Object toJson();
diff --git a/pkg/analysis_server/lib/plugin/edit/assist/assist_dart.dart b/pkg/analysis_server/lib/plugin/edit/assist/assist_dart.dart
index 6e7020e..f338cc5 100644
--- a/pkg/analysis_server/lib/plugin/edit/assist/assist_dart.dart
+++ b/pkg/analysis_server/lib/plugin/edit/assist/assist_dart.dart
@@ -2,9 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
-import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 
 /**
  * An object used to provide context information for Dart assist contributors.
@@ -13,9 +11,9 @@
  */
 abstract class DartAssistContext {
   /**
-   * The analysis driver used to access analysis results.
+   * The resolution result in which assist operates.
    */
-  AnalysisDriver get analysisDriver;
+  ResolvedUnitResult get resolveResult;
 
   /**
    * The length of the selection.
@@ -26,14 +24,4 @@
    * The start of the selection.
    */
   int get selectionOffset;
-
-  /**
-   * The source to get assists in.
-   */
-  Source get source;
-
-  /**
-   * The [CompilationUnit] to compute assists in.
-   */
-  CompilationUnit get unit;
 }
diff --git a/pkg/analysis_server/lib/plugin/edit/fix/fix_core.dart b/pkg/analysis_server/lib/plugin/edit/fix/fix_core.dart
index af303ec..ccc79a9 100644
--- a/pkg/analysis_server/lib/plugin/edit/fix/fix_core.dart
+++ b/pkg/analysis_server/lib/plugin/edit/fix/fix_core.dart
@@ -5,8 +5,6 @@
 import 'dart:async';
 
 import 'package:analyzer/error/error.dart';
-import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart'
     show SourceChange;
 import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
@@ -64,25 +62,9 @@
  */
 abstract class FixContext {
   /**
-   * The analysis driver used to access analysis results.
-   */
-  AnalysisDriver get analysisDriver;
-
-  /**
-   * The error to fix, should be reported by the given [analysisDriver].
+   * The error to fix.
    */
   AnalysisError get error;
-
-  /**
-   * All of the errors in the file. This is used to compute additional fixes
-   * such "Fix all instances in file."
-   */
-  List<AnalysisError> get errors;
-
-  /**
-   * The [ResourceProvider] to access files and folders.
-   */
-  ResourceProvider get resourceProvider;
 }
 
 /**
@@ -96,5 +78,5 @@
   /**
    * Return a list of fixes for the given [context].
    */
-  Future<List<Fix>> computeFixes(FixContext context);
+  Future<List<Fix>> computeFixes(covariant FixContext context);
 }
diff --git a/pkg/analysis_server/lib/plugin/edit/fix/fix_dart.dart b/pkg/analysis_server/lib/plugin/edit/fix/fix_dart.dart
index c4d54d1..2ac36c5 100644
--- a/pkg/analysis_server/lib/plugin/edit/fix/fix_dart.dart
+++ b/pkg/analysis_server/lib/plugin/edit/fix/fix_dart.dart
@@ -2,24 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'dart:async';
-
 import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
-import 'package:analysis_server/src/services/correction/fix_internal.dart'
-    show DartFixContextImpl;
-import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/src/dart/analysis/ast_provider_driver.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
-import 'package:analyzer/src/dart/analysis/top_level_declaration.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/source.dart';
-
-/**
- * Complete with top-level declarations with the given [name].
- */
-typedef Future<List<TopLevelDeclarationInSource>> GetTopLevelDeclarations(
-    String name);
+import 'package:analyzer/dart/analysis/results.dart';
 
 /**
  * An object used to provide context information for [DartFixContributor]s.
@@ -28,48 +12,7 @@
  */
 abstract class DartFixContext implements FixContext {
   /**
-   * The provider for parsed or resolved ASTs.
+   * The resolution result in which fix operates.
    */
-  AstProvider get astProvider;
-
-  /**
-   * The function to get top-level declarations from.
-   */
-  GetTopLevelDeclarations get getTopLevelDeclarations;
-
-  /**
-   * The [CompilationUnit] to compute fixes in.
-   */
-  CompilationUnit get unit;
-}
-
-/**
- * A [FixContributor] that can be used to contribute fixes for errors in Dart
- * files.
- *
- * Clients may extend this class when implementing plugins.
- */
-abstract class DartFixContributor implements FixContributor {
-  @override
-  Future<List<Fix>> computeFixes(FixContext context) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    AnalysisDriver driver = context.analysisDriver;
-    Source source = context.error.source;
-    if (!AnalysisEngine.isDartFileName(source.fullName)) {
-      return const <Fix>[];
-    }
-    CompilationUnit unit = (await driver.getResult(source.fullName)).unit;
-    if (unit == null) {
-      return const <Fix>[];
-    }
-    DartFixContext dartContext =
-        new DartFixContextImpl(context, new AstProviderForDriver(driver), unit);
-    return internalComputeFixes(dartContext);
-  }
-
-  /**
-   * Return a list of fixes for the given [context].
-   */
-  Future<List<Fix>> internalComputeFixes(DartFixContext context);
+  ResolvedUnitResult get resolveResult;
 }
diff --git a/pkg/analysis_server/lib/plugin/protocol/protocol_dart.dart b/pkg/analysis_server/lib/plugin/protocol/protocol_dart.dart
index e4ab6d5..cab3a80 100644
--- a/pkg/analysis_server/lib/plugin/protocol/protocol_dart.dart
+++ b/pkg/analysis_server/lib/plugin/protocol/protocol_dart.dart
@@ -64,6 +64,9 @@
   if (kind == engine.ElementKind.FUNCTION_TYPE_ALIAS) {
     return ElementKind.FUNCTION_TYPE_ALIAS;
   }
+  if (kind == engine.ElementKind.GENERIC_FUNCTION_TYPE) {
+    return ElementKind.FUNCTION_TYPE_ALIAS;
+  }
   if (kind == engine.ElementKind.GETTER) {
     return ElementKind.GETTER;
   }
diff --git a/pkg/analysis_server/lib/src/analysis_server.dart b/pkg/analysis_server/lib/src/analysis_server.dart
index ae93b77..ff16acf 100644
--- a/pkg/analysis_server/lib/src/analysis_server.dart
+++ b/pkg/analysis_server/lib/src/analysis_server.dart
@@ -14,6 +14,7 @@
 import 'package:analysis_server/protocol/protocol_generated.dart'
     hide AnalysisOptions;
 import 'package:analysis_server/src/analysis_logger.dart';
+import 'package:analysis_server/src/analysis_server_abstract.dart';
 import 'package:analysis_server/src/channel/channel.dart';
 import 'package:analysis_server/src/collections.dart';
 import 'package:analysis_server/src/computer/computer_highlights.dart';
@@ -42,36 +43,28 @@
 import 'package:analysis_server/src/search/search_domain.dart';
 import 'package:analysis_server/src/server/detachable_filesystem_manager.dart';
 import 'package:analysis_server/src/server/diagnostic_server.dart';
-import 'package:analysis_server/src/services/correction/namespace.dart';
-import 'package:analysis_server/src/services/search/element_visitors.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analysis_server/src/services/search/search_engine_internal.dart';
 import 'package:analysis_server/src/utilities/null_string_sink.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/exception/exception.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/physical_file_system.dart';
 import 'package:analyzer/instrumentation/instrumentation.dart';
 import 'package:analyzer/src/context/builder.dart';
 import 'package:analyzer/src/context/context_root.dart';
-import 'package:analyzer/src/dart/analysis/ast_provider_driver.dart';
 import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart' as nd;
-import 'package:analyzer/src/dart/analysis/file_byte_store.dart'
-    show EvictingFileByteStore;
 import 'package:analyzer/src/dart/analysis/file_state.dart' as nd;
 import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:analyzer/src/dart/analysis/status.dart' as nd;
-import 'package:analyzer/src/dart/ast/utilities.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/generated/utilities_general.dart';
 import 'package:analyzer/src/plugin/resolver_provider.dart';
-import 'package:analyzer/src/util/glob.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart' hide Element;
 import 'package:analyzer_plugin/src/utilities/navigation/navigation.dart';
 import 'package:telemetry/crash_reporting.dart';
@@ -80,179 +73,99 @@
 
 typedef void OptionUpdater(AnalysisOptionsImpl options);
 
-/**
- * Instances of the class [AnalysisServer] implement a server that listens on a
- * [CommunicationChannel] for analysis requests and process them.
- */
-class AnalysisServer {
-  /**
-   * The options of this server instance.
-   */
+/// Instances of the class [AnalysisServer] implement a server that listens on a
+/// [CommunicationChannel] for analysis requests and process them.
+class AnalysisServer extends AbstractAnalysisServer {
+  /// The options of this server instance.
   AnalysisServerOptions options;
 
-  /**
-   * The channel from which requests are received and to which responses should
-   * be sent.
-   */
+  /// The channel from which requests are received and to which responses should
+  /// be sent.
   final ServerCommunicationChannel channel;
 
-  /**
-   * The object used to manage sending a subset of notifications to the client.
-   * The subset of notifications are those to which plugins may contribute.
-   * This field is `null` when the new plugin support is disabled.
-   */
+  /// The object used to manage sending a subset of notifications to the client.
+  /// The subset of notifications are those to which plugins may contribute.
+  /// This field is `null` when the new plugin support is disabled.
   final NotificationManager notificationManager;
 
-  /**
-   * The object used to manage the execution of plugins.
-   */
+  /// The object used to manage the execution of plugins.
   PluginManager pluginManager;
 
-  /**
-   * The [ResourceProvider] using which paths are converted into [Resource]s.
-   */
-  final ResourceProvider resourceProvider;
-
-  /**
-   * The [SearchEngine] for this server, may be `null` if indexing is disabled.
-   */
+  /// The [SearchEngine] for this server, may be `null` if indexing is disabled.
   SearchEngine searchEngine;
 
-  /**
-   * A list of the globs used to determine which files should be analyzed. The
-   * list is lazily created and should be accessed using [analyzedFilesGlobs].
-   */
-  List<Glob> _analyzedFilesGlobs = null;
-
-  /**
-   * The [ContextManager] that handles the mapping from analysis roots to
-   * context directories.
-   */
-  ContextManager contextManager;
-
-  /**
-   * A flag indicating whether the server is running.  When false, contexts
-   * will no longer be added to [contextWorkQueue], and [performOperation] will
-   * discard any tasks it finds on [contextWorkQueue].
-   */
-  bool running;
-
-  /**
-   * A flag indicating the value of the 'analyzing' parameter sent in the last
-   * status message to the client.
-   */
+  /// A flag indicating the value of the 'analyzing' parameter sent in the last
+  /// status message to the client.
   bool statusAnalyzing = false;
 
-  /**
-   * A list of the request handlers used to handle the requests sent to this
-   * server.
-   */
+  /// A list of the request handlers used to handle the requests sent to this
+  /// server.
   List<RequestHandler> handlers;
 
-  /**
-   * The object used to manage the SDK's known to this server.
-   */
+  /// The object used to manage the SDK's known to this server.
   final DartSdkManager sdkManager;
 
-  /**
-   * The instrumentation service that is to be used by this analysis server.
-   */
+  /// The instrumentation service that is to be used by this analysis server.
   final InstrumentationService instrumentationService;
 
-  /**
-   * A set of the [ServerService]s to send notifications for.
-   */
+  /// A set of the [ServerService]s to send notifications for.
   Set<ServerService> serverServices = new HashSet<ServerService>();
 
-  /**
-   * A set of the [GeneralAnalysisService]s to send notifications for.
-   */
+  /// A set of the [GeneralAnalysisService]s to send notifications for.
   Set<GeneralAnalysisService> generalAnalysisServices =
       new HashSet<GeneralAnalysisService>();
 
-  /**
-   * A table mapping [AnalysisService]s to the file paths for which these
-   * notifications should be sent.
-   */
+  /// A table mapping [AnalysisService]s to the file paths for which these
+  /// notifications should be sent.
   Map<AnalysisService, Set<String>> analysisServices =
       new HashMap<AnalysisService, Set<String>>();
 
-  /**
-   * A table mapping [FlutterService]s to the file paths for which these
-   * notifications should be sent.
-   */
+  /// A table mapping [FlutterService]s to the file paths for which these
+  /// notifications should be sent.
   Map<FlutterService, Set<String>> flutterServices = {};
 
-  /**
-   * Performance information before initial analysis is complete.
-   */
+  /// Performance information before initial analysis is complete.
   final ServerPerformance performanceDuringStartup = new ServerPerformance();
 
-  /**
-   * Performance information after initial analysis is complete
-   * or `null` if the initial analysis is not yet complete
-   */
+  /// Performance information after initial analysis is complete
+  /// or `null` if the initial analysis is not yet complete
   ServerPerformance performanceAfterStartup;
 
-  /**
-   * A [RecentBuffer] of the most recent exceptions encountered by the analysis
-   * server.
-   */
+  /// A [RecentBuffer] of the most recent exceptions encountered by the analysis
+  /// server.
   final RecentBuffer<ServerException> exceptions = new RecentBuffer(10);
 
-  /**
-   * The class into which performance information is currently being recorded.
-   * During startup, this will be the same as [performanceDuringStartup]
-   * and after startup is complete, this switches to [performanceAfterStartup].
-   */
+  /// The class into which performance information is currently being recorded.
+  /// During startup, this will be the same as [performanceDuringStartup]
+  /// and after startup is complete, this switches to [performanceAfterStartup].
   ServerPerformance _performance;
 
-  /**
-   * The [Completer] that completes when analysis is complete.
-   */
+  /// The [Completer] that completes when analysis is complete.
   Completer _onAnalysisCompleteCompleter;
 
-  /**
-   * The controller that is notified when analysis is started.
-   */
+  /// The controller that is notified when analysis is started.
   StreamController<bool> _onAnalysisStartedController;
 
-  /**
-   * The content overlay for all analysis drivers.
-   */
+  /// The content overlay for all analysis drivers.
   final nd.FileContentOverlay fileContentOverlay = new nd.FileContentOverlay();
 
-  /**
-   * The current state of overlays from the client.  This is used as the
-   * content cache for all contexts.
-   */
-  final ContentCache overlayState = new ContentCache();
-
-  /**
-   * If the "analysis.analyzedFiles" notification is currently being subscribed
-   * to (see [generalAnalysisServices]), and at least one such notification has
-   * been sent since the subscription was enabled, the set of analyzed files
-   * that was delivered in the most recently sent notification.  Otherwise
-   * `null`.
-   */
+  /// If the "analysis.analyzedFiles" notification is currently being subscribed
+  /// to (see [generalAnalysisServices]), and at least one such notification has
+  /// been sent since the subscription was enabled, the set of analyzed files
+  /// that was delivered in the most recently sent notification.  Otherwise
+  /// `null`.
   Set<String> prevAnalyzedFiles;
 
-  /**
-   * The default options used to create new analysis contexts. This object is
-   * also referenced by the ContextManager.
-   */
+  /// The default options used to create new analysis contexts. This object is
+  /// also referenced by the ContextManager.
   final AnalysisOptionsImpl defaultContextOptions = new AnalysisOptionsImpl();
 
-  /**
-   * The file resolver provider used to override the way file URI's are
-   * resolved in some contexts.
-   */
+  /// The file resolver provider used to override the way file URI's are
+  /// resolved in some contexts.
   ResolverProvider fileResolverProvider;
 
-  /**
-   * The package resolver provider used to override the way package URI's are
-   * resolved in some contexts.
-   */
+  /// The package resolver provider used to override the way package URI's are
+  /// resolved in some contexts.
   ResolverProvider packageResolverProvider;
 
   PerformanceLog _analysisPerformanceLogger;
@@ -260,38 +173,27 @@
   ByteStore byteStore;
   nd.AnalysisDriverScheduler analysisDriverScheduler;
 
-  /**
-   * The controller for [onAnalysisSetChanged].
-   */
+  /// The controller for [onAnalysisSetChanged].
   final StreamController _onAnalysisSetChangedController =
       new StreamController.broadcast(sync: true);
 
-  /**
-   * The set of the files that are currently priority.
-   */
-  final Set<String> priorityFiles = new Set<String>();
-
-  /**
-   * The DiagnosticServer for this AnalysisServer. If available, it can be used
-   * to start an http diagnostics server or return the port for an existing
-   * server.
-   */
+  /// The DiagnosticServer for this AnalysisServer. If available, it can be used
+  /// to start an http diagnostics server or return the port for an existing
+  /// server.
   final DiagnosticServer diagnosticServer;
 
   final DetachableFileSystemManager detachableFileSystemManager;
 
-  /**
-   * Initialize a newly created server to receive requests from and send
-   * responses to the given [channel].
-   *
-   * If [rethrowExceptions] is true, then any exceptions thrown by analysis are
-   * propagated up the call stack.  The default is true to allow analysis
-   * exceptions to show up in unit tests, but it should be set to false when
-   * running a full analysis server.
-   */
+  /// Initialize a newly created server to receive requests from and send
+  /// responses to the given [channel].
+  ///
+  /// If [rethrowExceptions] is true, then any exceptions thrown by analysis are
+  /// propagated up the call stack.  The default is true to allow analysis
+  /// exceptions to show up in unit tests, but it should be set to false when
+  /// running a full analysis server.
   AnalysisServer(
     this.channel,
-    this.resourceProvider,
+    ResourceProvider resourceProvider,
     this.options,
     this.sdkManager,
     this.instrumentationService, {
@@ -299,8 +201,9 @@
     ResolverProvider fileResolverProvider: null,
     ResolverProvider packageResolverProvider: null,
     this.detachableFileSystemManager: null,
-  }) : notificationManager =
-            new NotificationManager(channel, resourceProvider) {
+  })  : notificationManager =
+            new NotificationManager(channel, resourceProvider),
+        super(resourceProvider) {
     _performance = performanceDuringStartup;
 
     pluginManager = new PluginManager(
@@ -328,7 +231,7 @@
       }
       _analysisPerformanceLogger = new PerformanceLog(sink);
     }
-    byteStore = _createByteStore();
+    byteStore = createByteStore(resourceProvider);
     analysisDriverScheduler = new nd.AnalysisDriverScheduler(
         _analysisPerformanceLogger,
         driverWatcher: pluginWatcher);
@@ -350,7 +253,6 @@
     contextManager.callbacks = contextManagerCallbacks;
     AnalysisEngine.instance.logger = new AnalysisLogger(this);
     _onAnalysisStartedController = new StreamController.broadcast();
-    running = true;
     onAnalysisStarted.first.then((_) {
       onAnalysisComplete.then((_) {
         performanceAfterStartup = new ServerPerformance();
@@ -378,47 +280,10 @@
     ];
   }
 
-  /**
-   * The analytics instance; note, this object can be `null`.
-   */
+  /// The analytics instance; note, this object can be `null`.
   telemetry.Analytics get analytics => options.analytics;
 
-  /**
-   * Return a list of the globs used to determine which files should be analyzed.
-   */
-  List<Glob> get analyzedFilesGlobs {
-    if (_analyzedFilesGlobs == null) {
-      _analyzedFilesGlobs = <Glob>[];
-      List<String> patterns = <String>[
-        '**/*.${AnalysisEngine.SUFFIX_DART}',
-        '**/*.${AnalysisEngine.SUFFIX_HTML}',
-        '**/*.${AnalysisEngine.SUFFIX_HTM}',
-        '**/${AnalysisEngine.ANALYSIS_OPTIONS_FILE}',
-        '**/${AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE}',
-        '**/${AnalysisEngine.PUBSPEC_YAML_FILE}'
-      ];
-      for (String pattern in patterns) {
-        try {
-          _analyzedFilesGlobs
-              .add(new Glob(resourceProvider.pathContext.separator, pattern));
-        } catch (exception, stackTrace) {
-          AnalysisEngine.instance.logger.logError(
-              'Invalid glob pattern: "$pattern"',
-              new CaughtException(exception, stackTrace));
-        }
-      }
-    }
-    return _analyzedFilesGlobs;
-  }
-
-  /**
-   * A table mapping [Folder]s to the [AnalysisDriver]s associated with them.
-   */
-  Map<Folder, nd.AnalysisDriver> get driverMap => contextManager.driverMap;
-
-  /**
-   * The [Future] that completes when analysis is complete.
-   */
+  /// The [Future] that completes when analysis is complete.
   Future get onAnalysisComplete {
     if (isAnalysisComplete()) {
       return new Future.value();
@@ -429,50 +294,34 @@
     return _onAnalysisCompleteCompleter.future;
   }
 
-  /**
-   * The stream that is notified when the analysis set is changed - this might
-   * be a change to a file, external via a watch event, or internal via
-   * overlay. This means that the resolved world might have changed.
-   *
-   * The type of produced elements is not specified and should not be used.
-   */
+  /// The stream that is notified when the analysis set is changed - this might
+  /// be a change to a file, external via a watch event, or internal via
+  /// overlay. This means that the resolved world might have changed.
+  ///
+  /// The type of produced elements is not specified and should not be used.
   Stream get onAnalysisSetChanged => _onAnalysisSetChangedController.stream;
 
-  /**
-   * The stream that is notified with `true` when analysis is started.
-   */
+  /// The stream that is notified with `true` when analysis is started.
   Stream<bool> get onAnalysisStarted {
     return _onAnalysisStartedController.stream;
   }
 
-  /**
-   * Return the total time the server's been alive.
-   */
+  /// Return the total time the server's been alive.
   Duration get uptime {
     DateTime start = new DateTime.fromMillisecondsSinceEpoch(
         performanceDuringStartup.startTime);
     return new DateTime.now().difference(start);
   }
 
-  /**
-   * The socket from which requests are being read has been closed.
-   */
-  void done() {
-    running = false;
-  }
+  /// The socket from which requests are being read has been closed.
+  void done() {}
 
-  /**
-   * There was an error related to the socket from which requests are being
-   * read.
-   */
-  void error(argument) {
-    running = false;
-  }
+  /// There was an error related to the socket from which requests are being
+  /// read.
+  void error(argument) {}
 
-  /**
-   * Return one of the SDKs that has been created, or `null` if no SDKs have
-   * been created yet.
-   */
+  /// Return one of the SDKs that has been created, or `null` if no SDKs have
+  /// been created yet.
   DartSdk findSdk() {
     DartSdk sdk = sdkManager.anySdk;
     if (sdk != null) {
@@ -482,64 +331,9 @@
     return null;
   }
 
-  /**
-   * Return an analysis driver to which the file with the given [path] is
-   * added if one exists, otherwise a driver in which the file was analyzed if
-   * one exists, otherwise the first driver, otherwise `null`.
-   */
-  nd.AnalysisDriver getAnalysisDriver(String path) {
-    List<nd.AnalysisDriver> drivers = driverMap.values.toList();
-    if (drivers.isNotEmpty) {
-      // Sort the drivers so that more deeply nested contexts will be checked
-      // before enclosing contexts.
-      drivers.sort((first, second) =>
-          second.contextRoot.root.length - first.contextRoot.root.length);
-      nd.AnalysisDriver driver = drivers.firstWhere(
-          (driver) => driver.contextRoot.containsFile(path),
-          orElse: () => null);
-      driver ??= drivers.firstWhere(
-          (driver) => driver.knownFiles.contains(path),
-          orElse: () => null);
-      driver ??= drivers.first;
-      return driver;
-    }
-    return null;
-  }
-
-  /**
-   * Return the analysis result for the file with the given [path]. The file is
-   * analyzed in one of the analysis drivers to which the file was added,
-   * otherwise in the first driver, otherwise `null` is returned.
-   */
-  Future<nd.AnalysisResult> getAnalysisResult(String path,
-      {bool sendCachedToStream: false}) {
-    if (!AnalysisEngine.isDartFileName(path)) {
-      return null;
-    }
-
-    nd.AnalysisDriver driver = getAnalysisDriver(path);
-    if (driver == null) {
-      return new Future.value();
-    }
-
-    return driver
-        .getResult(path, sendCachedToStream: sendCachedToStream)
-        .catchError((_) => null);
-  }
-
-  /**
-   * Return the [AstProvider] for the given [path].
-   */
-  AstProvider getAstProvider(String path) {
-    nd.AnalysisDriver analysisDriver = getAnalysisDriver(path);
-    return new AstProviderForDriver(analysisDriver);
-  }
-
-  /**
-   * Return the cached analysis result for the file with the given [path].
-   * If there is no cached result, return `null`.
-   */
-  nd.AnalysisResult getCachedAnalysisResult(String path) {
+  /// Return the cached analysis result for the file with the given [path].
+  /// If there is no cached result, return `null`.
+  ResolvedUnitResult getCachedResolvedUnit(String path) {
     if (!AnalysisEngine.isDartFileName(path)) {
       return null;
     }
@@ -548,90 +342,7 @@
     return driver?.getCachedResult(path);
   }
 
-  /**
-   * Return a [Future] that completes with the [Element] at the given
-   * [offset] of the given [file], or with `null` if there is no node at the
-   * [offset] or the node does not have an element.
-   */
-  Future<Element> getElementAtOffset(String file, int offset) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    if (!priorityFiles.contains(file)) {
-      var driver = getAnalysisDriver(file);
-      if (driver == null) {
-        return null;
-      }
-
-      var unitElementResult = await driver.getUnitElement(file);
-      if (unitElementResult == null) {
-        return null;
-      }
-
-      var element = findElementByNameOffset(unitElementResult.element, offset);
-      if (element != null) {
-        return element;
-      }
-    }
-
-    AstNode node = await getNodeAtOffset(file, offset);
-    return getElementOfNode(node);
-  }
-
-  /**
-   * Return the [Element] of the given [node], or `null` if [node] is `null` or
-   * does not have an element.
-   */
-  Element getElementOfNode(AstNode node) {
-    if (node == null) {
-      return null;
-    }
-    if (node is SimpleIdentifier && node.parent is LibraryIdentifier) {
-      node = node.parent;
-    }
-    if (node is LibraryIdentifier) {
-      node = node.parent;
-    }
-    if (node is StringLiteral && node.parent is UriBasedDirective) {
-      return null;
-    }
-    Element element = ElementLocator.locate(node);
-    if (node is SimpleIdentifier && element is PrefixElement) {
-      element = getImportElement(node);
-    }
-    return element;
-  }
-
-  /**
-   * Return a [Future] that completes with the resolved [AstNode] at the
-   * given [offset] of the given [file], or with `null` if there is no node as
-   * the [offset].
-   */
-  Future<AstNode> getNodeAtOffset(String file, int offset) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    nd.AnalysisResult result = await getAnalysisResult(file);
-    CompilationUnit unit = result?.unit;
-    if (unit != null) {
-      return new NodeLocator(offset).searchWithin(unit);
-    }
-    return null;
-  }
-
-  /**
-   * Return a [Future] that completes with the resolved [CompilationUnit] for
-   * the Dart file with the given [path], or with `null` if the file is not a
-   * Dart file or cannot be resolved.
-   */
-  Future<CompilationUnit> getResolvedCompilationUnit(String path) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    nd.AnalysisResult result = await getAnalysisResult(path);
-    return result?.unit;
-  }
-
-  /**
-   * Handle a [request] that was read from the communication channel.
-   */
+  /// Handle a [request] that was read from the communication channel.
   void handleRequest(Request request) {
     _performance.logRequest(request);
     runZoned(() {
@@ -672,50 +383,38 @@
     });
   }
 
-  /**
-   * Return `true` if analysis is complete.
-   */
+  /// Return `true` if analysis is complete.
   bool isAnalysisComplete() {
     return !analysisDriverScheduler.isAnalyzing;
   }
 
-  /**
-   * Return `true` if the given path is a valid `FilePath`.
-   *
-   * This means that it is absolute and normalized.
-   */
+  /// Return `true` if the given path is a valid `FilePath`.
+  ///
+  /// This means that it is absolute and normalized.
   bool isValidFilePath(String path) {
     return resourceProvider.pathContext.isAbsolute(path) &&
         resourceProvider.pathContext.normalize(path) == path;
   }
 
-  /**
-   * Trigger reanalysis of all files in the given list of analysis [roots], or
-   * everything if the analysis roots is `null`.
-   */
+  /// Trigger reanalysis of all files in the given list of analysis [roots], or
+  /// everything if the analysis roots is `null`.
   void reanalyze(List<Resource> roots) {
     // Instruct the contextDirectoryManager to rebuild all contexts from
     // scratch.
     contextManager.refresh(roots);
   }
 
-  /**
-   * Send the given [notification] to the client.
-   */
+  /// Send the given [notification] to the client.
   void sendNotification(Notification notification) {
     channel.sendNotification(notification);
   }
 
-  /**
-   * Send the given [response] to the client.
-   */
+  /// Send the given [response] to the client.
   void sendResponse(Response response) {
     channel.sendResponse(response);
   }
 
-  /**
-   * Sends a `server.error` notification.
-   */
+  /// Sends a `server.error` notification.
   void sendServerErrorNotification(
     String message,
     dynamic exception,
@@ -761,10 +460,8 @@
     ));
   }
 
-  /**
-   * Send status notification to the client. The state of analysis is given by
-   * the [status] information.
-   */
+  /// Send status notification to the client. The state of analysis is given by
+  /// the [status] information.
   void sendStatusNotificationNew(nd.AnalysisStatus status) {
     if (status.isAnalyzing) {
       _onAnalysisStartedController.add(true);
@@ -795,18 +492,16 @@
         new ServerStatusParams(analysis: analysis).toNotification());
   }
 
-  /**
-   * Implementation for `analysis.setAnalysisRoots`.
-   *
-   * TODO(scheglov) implement complete projects/contexts semantics.
-   *
-   * The current implementation is intentionally simplified and expected
-   * that only folders are given each given folder corresponds to the exactly
-   * one context.
-   *
-   * So, we can start working in parallel on adding services and improving
-   * projects/contexts support.
-   */
+  /// Implementation for `analysis.setAnalysisRoots`.
+  ///
+  /// TODO(scheglov) implement complete projects/contexts semantics.
+  ///
+  /// The current implementation is intentionally simplified and expected
+  /// that only folders are given each given folder corresponds to the exactly
+  /// one context.
+  ///
+  /// So, we can start working in parallel on adding services and improving
+  /// projects/contexts support.
   void setAnalysisRoots(String requestId, List<String> includedPaths,
       List<String> excludedPaths, Map<String, String> packageRoots) {
     if (notificationManager != null) {
@@ -820,9 +515,7 @@
     }
   }
 
-  /**
-   * Implementation for `analysis.setSubscriptions`.
-   */
+  /// Implementation for `analysis.setSubscriptions`.
   void setAnalysisSubscriptions(
       Map<AnalysisService, Set<String>> subscriptions) {
     if (notificationManager != null) {
@@ -836,14 +529,12 @@
       // the fully resolved unit, and processed with sending analysis
       // notifications as it happens after content changes.
       if (AnalysisEngine.isDartFileName(file)) {
-        getAnalysisResult(file, sendCachedToStream: true);
+        getResolvedUnit(file, sendCachedToStream: true);
       }
     }
   }
 
-  /**
-   * Implementation for `flutter.setSubscriptions`.
-   */
+  /// Implementation for `flutter.setSubscriptions`.
   void setFlutterSubscriptions(Map<FlutterService, Set<String>> subscriptions) {
     this.flutterServices = subscriptions;
     Set<String> allNewFiles =
@@ -853,14 +544,12 @@
       // the fully resolved unit, and processed with sending analysis
       // notifications as it happens after content changes.
       if (AnalysisEngine.isDartFileName(file)) {
-        getAnalysisResult(file, sendCachedToStream: true);
+        getResolvedUnit(file, sendCachedToStream: true);
       }
     }
   }
 
-  /**
-   * Implementation for `analysis.setGeneralSubscriptions`.
-   */
+  /// Implementation for `analysis.setGeneralSubscriptions`.
   void setGeneralAnalysisSubscriptions(
       List<GeneralAnalysisService> subscriptions) {
     Set<GeneralAnalysisService> newServices = subscriptions.toSet();
@@ -877,9 +566,7 @@
     generalAnalysisServices = newServices;
   }
 
-  /**
-   * Set the priority files to the given [files].
-   */
+  /// Set the priority files to the given [files].
   void setPriorityFiles(String requestId, List<String> files) {
     priorityFiles.clear();
     priorityFiles.addAll(files);
@@ -889,17 +576,13 @@
     });
   }
 
-  /**
-   * Returns `true` if errors should be reported for [file] with the given
-   * absolute path.
-   */
+  /// Returns `true` if errors should be reported for [file] with the given
+  /// absolute path.
   bool shouldSendErrorsNotificationFor(String file) {
     return contextManager.isInAnalysisRoot(file);
   }
 
   Future<void> shutdown() {
-    running = false;
-
     if (options.analytics != null) {
       options.analytics
           .waitForLastPing(timeout: new Duration(milliseconds: 200))
@@ -922,9 +605,7 @@
     return new Future.value();
   }
 
-  /**
-   * Implementation for `analysis.updateContent`.
-   */
+  /// Implementation for `analysis.updateContent`.
   void updateContent(String id, Map<String, dynamic> changes) {
     _onAnalysisSetChangedController.add(null);
     changes.forEach((file, change) {
@@ -969,10 +650,8 @@
     });
   }
 
-  /**
-   * Use the given updaters to update the values of the options in every
-   * existing analysis context.
-   */
+  /// Use the given updaters to update the values of the options in every
+  /// existing analysis context.
   void updateOptions(List<OptionUpdater> optionUpdaters) {
     // TODO(scheglov) implement for the new analysis driver
 //    //
@@ -996,32 +675,8 @@
 //    });
   }
 
-  /**
-   * If the state location can be accessed, return the file byte store,
-   * otherwise return the memory byte store.
-   */
-  ByteStore _createByteStore() {
-    const int M = 1024 * 1024 /*1 MiB*/;
-    const int G = 1024 * 1024 * 1024 /*1 GiB*/;
-
-    const int memoryCacheSize = 128 * M;
-
-    if (resourceProvider is PhysicalResourceProvider) {
-      Folder stateLocation =
-          resourceProvider.getStateLocation('.analysis-driver');
-      if (stateLocation != null) {
-        return new MemoryCachingByteStore(
-            new EvictingFileByteStore(stateLocation.path, G), memoryCacheSize);
-      }
-    }
-
-    return new MemoryCachingByteStore(new NullByteStore(), memoryCacheSize);
-  }
-
-  /**
-   * Return the path to the location of the byte store on disk, or `null` if
-   * there is no on-disk byte store.
-   */
+  /// Return the path to the location of the byte store on disk, or `null` if
+  /// there is no on-disk byte store.
   String _getByteStorePath() {
     if (resourceProvider is PhysicalResourceProvider) {
       Folder stateLocation =
@@ -1033,10 +688,8 @@
     return null;
   }
 
-  /**
-   * Returns `true` if there is a subscription for the given [service] and
-   * [file].
-   */
+  /// Returns `true` if there is a subscription for the given [service] and
+  /// [file].
   bool _hasAnalysisServiceSubscription(AnalysisService service, String file) {
     return analysisServices[service]?.contains(file) ?? false;
   }
@@ -1055,9 +708,7 @@
   }
 }
 
-/**
- * Various IDE options.
- */
+/// Various IDE options.
 class AnalysisServerOptions {
   bool useAnalysisHighlight2 = false;
 
@@ -1067,48 +718,37 @@
   String clientId;
   String clientVersion;
 
-  /**
-   * Base path where to cache data.
-   */
+  /// Base path where to cache data.
   String cacheFolder;
 
-  /**
-   * The analytics instance; note, this object can be `null`, and should be
-   * accessed via a null-aware operator.
-   */
+  /// The analytics instance; note, this object can be `null`, and should be
+  /// accessed via a null-aware operator.
   telemetry.Analytics analytics;
 
-  /**
-   * The crash report sender instance; note, this object can be `null`, and
-   * should be accessed via a null-aware operator.
-   */
+  /// The crash report sender instance; note, this object can be `null`, and
+  /// should be accessed via a null-aware operator.
   CrashReportSender crashReportSender;
 
-  /**
-   * Whether to enable parsing via the Fasta parser.
-   */
+  /// Whether to use the Language Server Protocol.
+  bool useLanguageServerProtocol = false;
+
+  /// Whether to enable parsing via the Fasta parser.
   bool useFastaParser = true;
 
-  /**
-   * User Experience, Experiment #1. This experiment changes the notion of
-   * what analysis roots are and priority files: the analysis root is set to be
-   * the priority files' containing directory.
-   */
+  /// User Experience, Experiment #1. This experiment changes the notion of
+  /// what analysis roots are and priority files: the analysis root is set to be
+  /// the priority files' containing directory.
   bool enableUXExperiment1 = false;
 
-  /**
-   * User Experience, Experiment #2. This experiment introduces the notion of an
-   * intermittent file system.
-   */
+  /// User Experience, Experiment #2. This experiment introduces the notion of
+  /// an intermittent file system.
   bool enableUXExperiment2 = false;
 }
 
 class ServerContextManagerCallbacks extends ContextManagerCallbacks {
   final AnalysisServer analysisServer;
 
-  /**
-   * The [ResourceProvider] by which paths are converted into [Resource]s.
-   */
+  /// The [ResourceProvider] by which paths are converted into [Resource]s.
   final ResourceProvider resourceProvider;
 
   ServerContextManagerCallbacks(this.analysisServer, this.resourceProvider);
@@ -1132,7 +772,7 @@
               NotificationManager.serverId,
               path,
               server.doAnalysisError_listFromEngine(
-                  result.driver.analysisOptions,
+                  result.session.analysisContext.analysisOptions,
                   result.lineInfo,
                   result.errors));
         } else {
@@ -1232,8 +872,8 @@
         if (analysisServer._hasFlutterServiceSubscription(
             FlutterService.OUTLINE, path)) {
           _runDelayed(() {
-            sendFlutterNotificationOutline(
-                analysisServer, path, result.content, result.lineInfo, unit);
+            sendFlutterNotificationOutline(analysisServer, path, result.content,
+                result.lineInfo, unit, result.typeProvider);
           });
         }
         // TODO(scheglov) Implement notifications for AnalysisService.IMPLEMENTED.
@@ -1303,14 +943,15 @@
     builderOptions.defaultOptions = options;
     builderOptions.defaultPackageFilePath = defaultPackageFilePath;
     builderOptions.defaultPackagesDirectoryPath = defaultPackagesDirectoryPath;
-    ContextBuilder builder = new ContextBuilder(resourceProvider,
-        analysisServer.sdkManager, analysisServer.overlayState,
+    ContextBuilder builder = new ContextBuilder(
+        resourceProvider, analysisServer.sdkManager, null,
         options: builderOptions);
     builder.fileResolverProvider = analysisServer.fileResolverProvider;
     builder.packageResolverProvider = analysisServer.packageResolverProvider;
     builder.analysisDriverScheduler = analysisServer.analysisDriverScheduler;
     builder.performanceLog = analysisServer._analysisPerformanceLogger;
     builder.byteStore = analysisServer.byteStore;
+    builder.enableIndex = true;
     builder.fileContentOverlay = analysisServer.fileContentOverlay;
     return builder;
   }
@@ -1347,7 +988,7 @@
   server.AnalysisNavigationParams _computeNavigationParams(
       String path, CompilationUnit unit) {
     NavigationCollectorImpl collector = new NavigationCollectorImpl();
-    computeDartNavigation(collector, unit, null, null);
+    computeDartNavigation(resourceProvider, collector, unit, null, null);
     collector.createRegions();
     return new server.AnalysisNavigationParams(
         path, collector.regions, collector.targets, collector.files);
@@ -1382,29 +1023,25 @@
         libraryName: libraryName);
   }
 
-  /**
-   * Run [f] in a new [Future].
-   *
-   * This method is used to delay sending notifications. If there is a more
-   * important consumer of an analysis results, specifically a code completion
-   * computer, we want it to run before spending time of sending notifications.
-   *
-   * TODO(scheglov) Consider replacing this with full priority based scheduler.
-   *
-   * TODO(scheglov) Alternatively, if code completion work in a way that does
-   * not produce (at first) fully resolved unit, but only part of it - a single
-   * method, or a top-level declaration, we would not have this problem - the
-   * completion computer would be the only consumer of the partial analysis
-   * result.
-   */
+  /// Run [f] in a new [Future].
+  ///
+  /// This method is used to delay sending notifications. If there is a more
+  /// important consumer of an analysis results, specifically a code completion
+  /// computer, we want it to run before spending time of sending notifications.
+  ///
+  /// TODO(scheglov) Consider replacing this with full priority based scheduler.
+  ///
+  /// TODO(scheglov) Alternatively, if code completion work in a way that does
+  /// not produce (at first) fully resolved unit, but only part of it - a single
+  /// method, or a top-level declaration, we would not have this problem - the
+  /// completion computer would be the only consumer of the partial analysis
+  /// result.
   void _runDelayed(f()) {
     new Future(f);
   }
 }
 
-/**
- * Used to record server exceptions.
- */
+/// Used to record server exceptions.
 class ServerException {
   final String message;
   final dynamic exception;
@@ -1417,40 +1054,26 @@
   String toString() => message;
 }
 
-/**
- * A class used by [AnalysisServer] to record performance information
- * such as request latency.
- */
+/// A class used by [AnalysisServer] to record performance information
+/// such as request latency.
 class ServerPerformance {
-  /**
-   * The creation time and the time when performance information
-   * started to be recorded here.
-   */
+  /// The creation time and the time when performance information
+  /// started to be recorded here.
   final int startTime = new DateTime.now().millisecondsSinceEpoch;
 
-  /**
-   * The number of requests.
-   */
+  /// The number of requests.
   int requestCount = 0;
 
-  /**
-   * The total latency (milliseconds) for all recorded requests.
-   */
+  /// The total latency (milliseconds) for all recorded requests.
   int requestLatency = 0;
 
-  /**
-   * The maximum latency (milliseconds) for all recorded requests.
-   */
+  /// The maximum latency (milliseconds) for all recorded requests.
   int maxLatency = 0;
 
-  /**
-   * The number of requests with latency > 150 milliseconds.
-   */
+  /// The number of requests with latency > 150 milliseconds.
   int slowRequestCount = 0;
 
-  /**
-   * Log performance information about the given request.
-   */
+  /// Log performance information about the given request.
   void logRequest(Request request) {
     ++requestCount;
     if (request.clientRequestTime != null) {
@@ -1465,34 +1088,22 @@
   }
 }
 
-/**
- * Container with global [AnalysisServer] performance statistics.
- */
+/// Container with global [AnalysisServer] performance statistics.
 class ServerPerformanceStatistics {
-  /**
-   * The [PerformanceTag] for `package:analysis_server`.
-   */
+  /// The [PerformanceTag] for `package:analysis_server`.
   static final PerformanceTag server = new PerformanceTag('server');
 
-  /**
-   * The [PerformanceTag] for time spent between calls to
-   * AnalysisServer.performOperation when the server is idle.
-   */
+  /// The [PerformanceTag] for time spent between calls to
+  /// AnalysisServer.performOperation when the server is idle.
   static final PerformanceTag idle = new PerformanceTag('idle');
 
-  /**
-   * The [PerformanceTag] for time spent in
-   * PerformAnalysisOperation._sendNotices.
-   */
+  /// The [PerformanceTag] for time spent in
+  /// PerformAnalysisOperation._sendNotices.
   static final PerformanceTag notices = server.createChild('notices');
 
-  /**
-   * The [PerformanceTag] for time spent in server communication channels.
-   */
+  /// The [PerformanceTag] for time spent in server communication channels.
   static final PerformanceTag serverChannel = server.createChild('channel');
 
-  /**
-   * The [PerformanceTag] for time spent in server request handlers.
-   */
+  /// The [PerformanceTag] for time spent in server request handlers.
   static final PerformanceTag serverRequests = server.createChild('requests');
 }
diff --git a/pkg/analysis_server/lib/src/analysis_server_abstract.dart b/pkg/analysis_server/lib/src/analysis_server_abstract.dart
new file mode 100644
index 0000000..20a6559
--- /dev/null
+++ b/pkg/analysis_server/lib/src/analysis_server_abstract.dart
@@ -0,0 +1,200 @@
+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+import 'dart:core';
+
+import 'package:analysis_server/src/context_manager.dart';
+import 'package:analysis_server/src/services/correction/namespace.dart';
+import 'package:analysis_server/src/services/search/element_visitors.dart';
+import 'package:analyzer/dart/analysis/results.dart';
+import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/exception/exception.dart';
+import 'package:analyzer/file_system/file_system.dart';
+import 'package:analyzer/file_system/physical_file_system.dart';
+import 'package:analyzer/src/dart/analysis/byte_store.dart';
+import 'package:analyzer/src/dart/analysis/driver.dart' as nd;
+import 'package:analyzer/src/dart/analysis/file_byte_store.dart'
+    show EvictingFileByteStore;
+import 'package:analyzer/src/dart/analysis/file_state.dart' as nd;
+import 'package:analyzer/src/dart/analysis/status.dart' as nd;
+import 'package:analyzer/src/dart/ast/utilities.dart';
+import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/util/glob.dart';
+
+/// Implementations of [AbstractAnalysisServer] implement a server that listens
+/// on a [CommunicationChannel] for analysis messages and process them.
+abstract class AbstractAnalysisServer {
+  /// The [ContextManager] that handles the mapping from analysis roots to
+  /// context directories.
+  ContextManager contextManager;
+
+  /// The set of the files that are currently priority.
+  final Set<String> priorityFiles = new Set<String>();
+
+  final List<String> analyzableFilePatterns = <String>[
+    '**/*.${AnalysisEngine.SUFFIX_DART}',
+    '**/*.${AnalysisEngine.SUFFIX_HTML}',
+    '**/*.${AnalysisEngine.SUFFIX_HTM}',
+    '**/${AnalysisEngine.ANALYSIS_OPTIONS_FILE}',
+    '**/${AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE}',
+    '**/${AnalysisEngine.PUBSPEC_YAML_FILE}'
+  ];
+
+  /// The [ResourceProvider] using which paths are converted into [Resource]s.
+  final ResourceProvider resourceProvider;
+
+  /// A list of the globs used to determine which files should be analyzed. The
+  /// list is lazily created and should be accessed using [analyzedFilesGlobs].
+  List<Glob> _analyzedFilesGlobs = null;
+
+  AbstractAnalysisServer(this.resourceProvider);
+
+  /// Return a list of the globs used to determine which files should be
+  /// analyzed.
+  List<Glob> get analyzedFilesGlobs {
+    if (_analyzedFilesGlobs == null) {
+      _analyzedFilesGlobs = <Glob>[];
+      for (String pattern in analyzableFilePatterns) {
+        try {
+          _analyzedFilesGlobs
+              .add(new Glob(resourceProvider.pathContext.separator, pattern));
+        } catch (exception, stackTrace) {
+          AnalysisEngine.instance.logger.logError(
+              'Invalid glob pattern: "$pattern"',
+              new CaughtException(exception, stackTrace));
+        }
+      }
+    }
+    return _analyzedFilesGlobs;
+  }
+
+  /// A table mapping [Folder]s to the [AnalysisDriver]s associated with them.
+  Map<Folder, nd.AnalysisDriver> get driverMap => contextManager.driverMap;
+
+  /// If the state location can be accessed, return the file byte store,
+  /// otherwise return the memory byte store.
+  ByteStore createByteStore(ResourceProvider resourceProvider) {
+    const int M = 1024 * 1024 /*1 MiB*/;
+    const int G = 1024 * 1024 * 1024 /*1 GiB*/;
+
+    const int memoryCacheSize = 128 * M;
+
+    if (resourceProvider is PhysicalResourceProvider) {
+      Folder stateLocation =
+          resourceProvider.getStateLocation('.analysis-driver');
+      if (stateLocation != null) {
+        return new MemoryCachingByteStore(
+            new EvictingFileByteStore(stateLocation.path, G), memoryCacheSize);
+      }
+    }
+
+    return new MemoryCachingByteStore(new NullByteStore(), memoryCacheSize);
+  }
+
+  /// Return an analysis driver to which the file with the given [path] is
+  /// added if one exists, otherwise a driver in which the file was analyzed if
+  /// one exists, otherwise the first driver, otherwise `null`.
+  nd.AnalysisDriver getAnalysisDriver(String path) {
+    List<nd.AnalysisDriver> drivers = driverMap.values.toList();
+    if (drivers.isNotEmpty) {
+      // Sort the drivers so that more deeply nested contexts will be checked
+      // before enclosing contexts.
+      drivers.sort((first, second) =>
+          second.contextRoot.root.length - first.contextRoot.root.length);
+      nd.AnalysisDriver driver = drivers.firstWhere(
+          (driver) => driver.contextRoot.containsFile(path),
+          orElse: () => null);
+      driver ??= drivers.firstWhere(
+          (driver) => driver.knownFiles.contains(path),
+          orElse: () => null);
+      driver ??= drivers.first;
+      return driver;
+    }
+    return null;
+  }
+
+  /// Return a [Future] that completes with the [Element] at the given
+  /// [offset] of the given [file], or with `null` if there is no node at the
+  /// [offset] or the node does not have an element.
+  Future<Element> getElementAtOffset(String file, int offset) async {
+    // TODO(brianwilkerson) Determine whether this await is necessary.
+    await null;
+    if (!priorityFiles.contains(file)) {
+      var driver = getAnalysisDriver(file);
+      if (driver == null) {
+        return null;
+      }
+
+      var unitElementResult = await driver.getUnitElement(file);
+      if (unitElementResult == null) {
+        return null;
+      }
+
+      var element = findElementByNameOffset(unitElementResult.element, offset);
+      if (element != null) {
+        return element;
+      }
+    }
+
+    AstNode node = await getNodeAtOffset(file, offset);
+    return getElementOfNode(node);
+  }
+
+  /// Return the [Element] of the given [node], or `null` if [node] is `null` or
+  /// does not have an element.
+  Element getElementOfNode(AstNode node) {
+    if (node == null) {
+      return null;
+    }
+    if (node is SimpleIdentifier && node.parent is LibraryIdentifier) {
+      node = node.parent;
+    }
+    if (node is LibraryIdentifier) {
+      node = node.parent;
+    }
+    if (node is StringLiteral && node.parent is UriBasedDirective) {
+      return null;
+    }
+    Element element = ElementLocator.locate(node);
+    if (node is SimpleIdentifier && element is PrefixElement) {
+      element = getImportElement(node);
+    }
+    return element;
+  }
+
+  /// Return a [Future] that completes with the resolved [AstNode] at the
+  /// given [offset] of the given [file], or with `null` if there is no node as
+  /// the [offset].
+  Future<AstNode> getNodeAtOffset(String file, int offset) async {
+    // TODO(brianwilkerson) Determine whether this await is necessary.
+    await null;
+    ResolvedUnitResult result = await getResolvedUnit(file);
+    CompilationUnit unit = result?.unit;
+    if (unit != null) {
+      return new NodeLocator(offset).searchWithin(unit);
+    }
+    return null;
+  }
+
+  /// Return the resolved unit for the file with the given [path]. The file is
+  /// analyzed in one of the analysis drivers to which the file was added,
+  /// otherwise in the first driver, otherwise `null` is returned.
+  Future<ResolvedUnitResult> getResolvedUnit(String path,
+      {bool sendCachedToStream: false}) {
+    if (!AnalysisEngine.isDartFileName(path)) {
+      return null;
+    }
+
+    nd.AnalysisDriver driver = getAnalysisDriver(path);
+    if (driver == null) {
+      return new Future.value();
+    }
+
+    return driver
+        .getResult(path, sendCachedToStream: sendCachedToStream)
+        .catchError((_) => null);
+  }
+}
diff --git a/pkg/analysis_server/lib/src/computer/computer_closingLabels.dart b/pkg/analysis_server/lib/src/computer/computer_closingLabels.dart
index d1fe2d4..19ff554 100644
--- a/pkg/analysis_server/lib/src/computer/computer_closingLabels.dart
+++ b/pkg/analysis_server/lib/src/computer/computer_closingLabels.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -45,8 +45,7 @@
 /**
  * An AST visitor for [DartUnitClosingLabelsComputer].
  */
-class _DartUnitClosingLabelsComputerVisitor
-    extends RecursiveAstVisitor<Object> {
+class _DartUnitClosingLabelsComputerVisitor extends RecursiveAstVisitor<void> {
   final DartUnitClosingLabelsComputer computer;
 
   int interpolatedStringsEntered = 0;
@@ -57,7 +56,7 @@
   ClosingLabel get _currentLabel => labelStack.isEmpty ? null : labelStack.last;
 
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     ClosingLabel label;
 
     if (node.argumentList != null) {
@@ -75,14 +74,14 @@
     if (label != null) _pushLabel(label);
 
     try {
-      return super.visitInstanceCreationExpression(node);
+      super.visitInstanceCreationExpression(node);
     } finally {
       if (label != null) _popLabel();
     }
   }
 
   @override
-  Object visitListLiteral(ListLiteral node) {
+  void visitListLiteral(ListLiteral node) {
     final NodeList<TypeAnnotation> args = node.typeArguments?.arguments;
     final String typeName = args != null ? args[0]?.toString() : null;
 
@@ -95,17 +94,17 @@
     if (label != null) _pushLabel(label);
 
     try {
-      return super.visitListLiteral(node);
+      super.visitListLiteral(node);
     } finally {
       if (label != null) _popLabel();
     }
   }
 
   @override
-  Object visitStringInterpolation(StringInterpolation node) {
+  void visitStringInterpolation(StringInterpolation node) {
     interpolatedStringsEntered++;
     try {
-      return super.visitStringInterpolation(node);
+      super.visitStringInterpolation(node);
     } finally {
       interpolatedStringsEntered--;
     }
diff --git a/pkg/analysis_server/lib/src/computer/computer_folding.dart b/pkg/analysis_server/lib/src/computer/computer_folding.dart
index 9488775..4edf2fc 100644
--- a/pkg/analysis_server/lib/src/computer/computer_folding.dart
+++ b/pkg/analysis_server/lib/src/computer/computer_folding.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -105,129 +105,129 @@
 /**
  * An AST visitor for [DartUnitFoldingComputer].
  */
-class _DartUnitFoldingComputerVisitor extends RecursiveAstVisitor<Object> {
+class _DartUnitFoldingComputerVisitor extends RecursiveAstVisitor<void> {
   final DartUnitFoldingComputer _computer;
   _DartUnitFoldingComputerVisitor(this._computer);
 
   @override
-  Object visitBlockFunctionBody(BlockFunctionBody node) {
+  void visitBlockFunctionBody(BlockFunctionBody node) {
     _computer._addRegion(node.block.leftBracket.end,
         node.block.rightBracket.offset, FoldingKind.FUNCTION_BODY);
-    return super.visitBlockFunctionBody(node);
+    super.visitBlockFunctionBody(node);
   }
 
   @override
-  Object visitClassDeclaration(ClassDeclaration node) {
+  void visitClassDeclaration(ClassDeclaration node) {
     _computer._addRegionForAnnotations(node.metadata);
     _computer._addRegion(
         node.leftBracket.end, node.rightBracket.offset, FoldingKind.CLASS_BODY);
-    return super.visitClassDeclaration(node);
+    super.visitClassDeclaration(node);
   }
 
   @override
-  Object visitComment(Comment node) {
+  void visitComment(Comment node) {
     if (node.isDocumentation) {
       _computer._addRegion(
           node.offset, node.end, FoldingKind.DOCUMENTATION_COMMENT);
     }
-    return super.visitComment(node);
+    super.visitComment(node);
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     _computer._addRegionForAnnotations(node.metadata);
-    return super.visitConstructorDeclaration(node);
+    super.visitConstructorDeclaration(node);
   }
 
   @override
-  Object visitExportDirective(ExportDirective node) {
+  void visitExportDirective(ExportDirective node) {
     _computer._recordDirective(node);
-    return super.visitExportDirective(node);
+    super.visitExportDirective(node);
   }
 
   @override
-  Object visitFieldDeclaration(FieldDeclaration node) {
+  void visitFieldDeclaration(FieldDeclaration node) {
     _computer._addRegionForAnnotations(node.metadata);
-    return super.visitFieldDeclaration(node);
+    super.visitFieldDeclaration(node);
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     _computer._addRegionForAnnotations(node.metadata);
-    return super.visitFunctionDeclaration(node);
+    super.visitFunctionDeclaration(node);
   }
 
   @override
-  Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
+  void visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     _computer._addRegion(node.argumentList.leftParenthesis.end,
         node.argumentList.rightParenthesis.offset, FoldingKind.INVOCATION);
-    return super.visitFunctionExpressionInvocation(node);
+    super.visitFunctionExpressionInvocation(node);
   }
 
   @override
-  visitImportDirective(ImportDirective node) {
+  void visitImportDirective(ImportDirective node) {
     _computer._recordDirective(node);
-    return super.visitImportDirective(node);
+    super.visitImportDirective(node);
   }
 
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     _computer._addRegion(node.argumentList.leftParenthesis.end,
         node.argumentList.rightParenthesis.offset, FoldingKind.INVOCATION);
-    return super.visitInstanceCreationExpression(node);
+    super.visitInstanceCreationExpression(node);
   }
 
   @override
-  Object visitLibraryDirective(LibraryDirective node) {
+  void visitLibraryDirective(LibraryDirective node) {
     _computer._recordDirective(node);
-    return super.visitLibraryDirective(node);
+    super.visitLibraryDirective(node);
   }
 
   @override
-  Object visitListLiteral(ListLiteral node) {
+  void visitListLiteral(ListLiteral node) {
     _computer._addRegion(
         node.leftBracket.end, node.rightBracket.offset, FoldingKind.LITERAL);
-    return super.visitListLiteral(node);
+    super.visitListLiteral(node);
   }
 
   @override
-  Object visitMapLiteral(MapLiteral node) {
+  void visitMapLiteral(MapLiteral node) {
     _computer._addRegion(
         node.leftBracket.end, node.rightBracket.offset, FoldingKind.LITERAL);
-    return super.visitMapLiteral(node);
+    super.visitMapLiteral(node);
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     _computer._addRegionForAnnotations(node.metadata);
-    return super.visitMethodDeclaration(node);
+    super.visitMethodDeclaration(node);
   }
 
   @override
-  Object visitMethodInvocation(MethodInvocation node) {
+  void visitMethodInvocation(MethodInvocation node) {
     _computer._addRegion(node.argumentList.leftParenthesis.end,
         node.argumentList.rightParenthesis.offset, FoldingKind.INVOCATION);
-    return super.visitMethodInvocation(node);
+    super.visitMethodInvocation(node);
   }
 
   @override
-  Object visitMixinDeclaration(MixinDeclaration node) {
+  void visitMixinDeclaration(MixinDeclaration node) {
     _computer._addRegionForAnnotations(node.metadata);
     // TODO(brianwilkerson) Define `FoldingKind.MIXIN_BODY`?
     _computer._addRegion(
         node.leftBracket.end, node.rightBracket.offset, FoldingKind.CLASS_BODY);
-    return super.visitMixinDeclaration(node);
+    super.visitMixinDeclaration(node);
   }
 
   @override
-  Object visitPartDirective(PartDirective node) {
+  void visitPartDirective(PartDirective node) {
     _computer._recordDirective(node);
-    return super.visitPartDirective(node);
+    super.visitPartDirective(node);
   }
 
   @override
-  Object visitPartOfDirective(PartOfDirective node) {
+  void visitPartOfDirective(PartOfDirective node) {
     _computer._recordDirective(node);
-    return super.visitPartOfDirective(node);
+    super.visitPartOfDirective(node);
   }
 }
diff --git a/pkg/analysis_server/lib/src/computer/computer_highlights.dart b/pkg/analysis_server/lib/src/computer/computer_highlights.dart
index b0b5d40..39c1e8e 100644
--- a/pkg/analysis_server/lib/src/computer/computer_highlights.dart
+++ b/pkg/analysis_server/lib/src/computer/computer_highlights.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -344,251 +344,251 @@
 /**
  * An AST visitor for [DartUnitHighlightsComputer].
  */
-class _DartUnitHighlightsComputerVisitor extends RecursiveAstVisitor<Object> {
+class _DartUnitHighlightsComputerVisitor extends RecursiveAstVisitor<void> {
   final DartUnitHighlightsComputer computer;
 
   _DartUnitHighlightsComputerVisitor(this.computer);
 
   @override
-  Object visitAnnotation(Annotation node) {
+  void visitAnnotation(Annotation node) {
     computer._addIdentifierRegion_annotation(node);
-    return super.visitAnnotation(node);
+    super.visitAnnotation(node);
   }
 
   @override
-  Object visitAsExpression(AsExpression node) {
+  void visitAsExpression(AsExpression node) {
     computer._addRegion_token(node.asOperator, HighlightRegionType.BUILT_IN);
-    return super.visitAsExpression(node);
+    super.visitAsExpression(node);
   }
 
   @override
-  Object visitAssertStatement(AssertStatement node) {
+  void visitAssertStatement(AssertStatement node) {
     computer._addRegion_token(node.assertKeyword, HighlightRegionType.KEYWORD);
-    return super.visitAssertStatement(node);
+    super.visitAssertStatement(node);
   }
 
   @override
-  Object visitAwaitExpression(AwaitExpression node) {
+  void visitAwaitExpression(AwaitExpression node) {
     computer._addRegion_token(node.awaitKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitAwaitExpression(node);
+    super.visitAwaitExpression(node);
   }
 
   @override
-  Object visitBlockFunctionBody(BlockFunctionBody node) {
+  void visitBlockFunctionBody(BlockFunctionBody node) {
     _addRegions_functionBody(node);
-    return super.visitBlockFunctionBody(node);
+    super.visitBlockFunctionBody(node);
   }
 
   @override
-  Object visitBooleanLiteral(BooleanLiteral node) {
+  void visitBooleanLiteral(BooleanLiteral node) {
     computer._addRegion_node(node, HighlightRegionType.KEYWORD);
     computer._addRegion_node(node, HighlightRegionType.LITERAL_BOOLEAN);
-    return super.visitBooleanLiteral(node);
+    super.visitBooleanLiteral(node);
   }
 
   @override
-  Object visitBreakStatement(BreakStatement node) {
+  void visitBreakStatement(BreakStatement node) {
     computer._addRegion_token(node.breakKeyword, HighlightRegionType.KEYWORD);
-    return super.visitBreakStatement(node);
+    super.visitBreakStatement(node);
   }
 
   @override
-  Object visitCatchClause(CatchClause node) {
+  void visitCatchClause(CatchClause node) {
     computer._addRegion_token(node.catchKeyword, HighlightRegionType.KEYWORD);
     computer._addRegion_token(node.onKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitCatchClause(node);
+    super.visitCatchClause(node);
   }
 
   @override
-  Object visitClassDeclaration(ClassDeclaration node) {
+  void visitClassDeclaration(ClassDeclaration node) {
     computer._addRegion_token(node.classKeyword, HighlightRegionType.KEYWORD);
     computer._addRegion_token(
         node.abstractKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitClassDeclaration(node);
+    super.visitClassDeclaration(node);
   }
 
   @override
-  Object visitClassTypeAlias(ClassTypeAlias node) {
+  void visitClassTypeAlias(ClassTypeAlias node) {
     computer._addRegion_token(
         node.abstractKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitClassTypeAlias(node);
+    super.visitClassTypeAlias(node);
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     computer._addRegion_token(
         node.externalKeyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(
         node.factoryKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitConstructorDeclaration(node);
+    super.visitConstructorDeclaration(node);
   }
 
   @override
-  Object visitContinueStatement(ContinueStatement node) {
+  void visitContinueStatement(ContinueStatement node) {
     computer._addRegion_token(
         node.continueKeyword, HighlightRegionType.KEYWORD);
-    return super.visitContinueStatement(node);
+    super.visitContinueStatement(node);
   }
 
   @override
-  Object visitDoStatement(DoStatement node) {
+  void visitDoStatement(DoStatement node) {
     computer._addRegion_token(node.doKeyword, HighlightRegionType.KEYWORD);
     computer._addRegion_token(node.whileKeyword, HighlightRegionType.KEYWORD);
-    return super.visitDoStatement(node);
+    super.visitDoStatement(node);
   }
 
   @override
-  Object visitDoubleLiteral(DoubleLiteral node) {
+  void visitDoubleLiteral(DoubleLiteral node) {
     computer._addRegion_node(node, HighlightRegionType.LITERAL_DOUBLE);
-    return super.visitDoubleLiteral(node);
+    super.visitDoubleLiteral(node);
   }
 
   @override
-  Object visitEnumDeclaration(EnumDeclaration node) {
+  void visitEnumDeclaration(EnumDeclaration node) {
     computer._addRegion_token(node.enumKeyword, HighlightRegionType.KEYWORD);
-    return super.visitEnumDeclaration(node);
+    super.visitEnumDeclaration(node);
   }
 
   @override
-  Object visitExportDirective(ExportDirective node) {
+  void visitExportDirective(ExportDirective node) {
     computer._addRegion_node(node, HighlightRegionType.DIRECTIVE);
     computer._addRegion_token(node.keyword, HighlightRegionType.BUILT_IN);
-    return super.visitExportDirective(node);
+    super.visitExportDirective(node);
   }
 
   @override
-  Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
+  void visitExpressionFunctionBody(ExpressionFunctionBody node) {
     _addRegions_functionBody(node);
-    return super.visitExpressionFunctionBody(node);
+    super.visitExpressionFunctionBody(node);
   }
 
   @override
-  Object visitExtendsClause(ExtendsClause node) {
+  void visitExtendsClause(ExtendsClause node) {
     computer._addRegion_token(node.extendsKeyword, HighlightRegionType.KEYWORD);
-    return super.visitExtendsClause(node);
+    super.visitExtendsClause(node);
   }
 
   @override
-  Object visitFieldDeclaration(FieldDeclaration node) {
+  void visitFieldDeclaration(FieldDeclaration node) {
     computer._addRegion_token(node.staticKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitFieldDeclaration(node);
+    super.visitFieldDeclaration(node);
   }
 
   @override
-  Object visitForEachStatement(ForEachStatement node) {
+  void visitForEachStatement(ForEachStatement node) {
     computer._addRegion_token(node.awaitKeyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(node.forKeyword, HighlightRegionType.KEYWORD);
     computer._addRegion_token(node.inKeyword, HighlightRegionType.KEYWORD);
-    return super.visitForEachStatement(node);
+    super.visitForEachStatement(node);
   }
 
   @override
-  Object visitForStatement(ForStatement node) {
+  void visitForStatement(ForStatement node) {
     computer._addRegion_token(node.forKeyword, HighlightRegionType.KEYWORD);
-    return super.visitForStatement(node);
+    super.visitForStatement(node);
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     computer._addRegion_token(
         node.externalKeyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(
         node.propertyKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitFunctionDeclaration(node);
+    super.visitFunctionDeclaration(node);
   }
 
   @override
-  Object visitFunctionTypeAlias(FunctionTypeAlias node) {
+  void visitFunctionTypeAlias(FunctionTypeAlias node) {
     computer._addRegion_token(
         node.typedefKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitFunctionTypeAlias(node);
+    super.visitFunctionTypeAlias(node);
   }
 
   @override
-  Object visitGenericFunctionType(GenericFunctionType node) {
+  void visitGenericFunctionType(GenericFunctionType node) {
     computer._addRegion_token(
         node.functionKeyword, HighlightRegionType.KEYWORD);
-    return super.visitGenericFunctionType(node);
+    super.visitGenericFunctionType(node);
   }
 
   @override
-  Object visitGenericTypeAlias(GenericTypeAlias node) {
+  void visitGenericTypeAlias(GenericTypeAlias node) {
     computer._addRegion_token(node.typedefKeyword, HighlightRegionType.KEYWORD);
-    return super.visitGenericTypeAlias(node);
+    super.visitGenericTypeAlias(node);
   }
 
   @override
-  Object visitHideCombinator(HideCombinator node) {
+  void visitHideCombinator(HideCombinator node) {
     computer._addRegion_token(node.keyword, HighlightRegionType.BUILT_IN);
-    return super.visitHideCombinator(node);
+    super.visitHideCombinator(node);
   }
 
   @override
-  Object visitIfStatement(IfStatement node) {
+  void visitIfStatement(IfStatement node) {
     computer._addRegion_token(node.ifKeyword, HighlightRegionType.KEYWORD);
-    return super.visitIfStatement(node);
+    super.visitIfStatement(node);
   }
 
   @override
-  Object visitImplementsClause(ImplementsClause node) {
+  void visitImplementsClause(ImplementsClause node) {
     computer._addRegion_token(
         node.implementsKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitImplementsClause(node);
+    super.visitImplementsClause(node);
   }
 
   @override
-  Object visitImportDirective(ImportDirective node) {
+  void visitImportDirective(ImportDirective node) {
     computer._addRegion_node(node, HighlightRegionType.DIRECTIVE);
     computer._addRegion_token(node.keyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(
         node.deferredKeyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(node.asKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitImportDirective(node);
+    super.visitImportDirective(node);
   }
 
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     if (node.keyword != null) {
       computer._addRegion_token(node.keyword, HighlightRegionType.KEYWORD);
     }
-    return super.visitInstanceCreationExpression(node);
+    super.visitInstanceCreationExpression(node);
   }
 
   @override
-  Object visitIntegerLiteral(IntegerLiteral node) {
+  void visitIntegerLiteral(IntegerLiteral node) {
     computer._addRegion_node(node, HighlightRegionType.LITERAL_INTEGER);
-    return super.visitIntegerLiteral(node);
+    super.visitIntegerLiteral(node);
   }
 
   @override
-  Object visitIsExpression(IsExpression node) {
+  void visitIsExpression(IsExpression node) {
     computer._addRegion_token(node.isOperator, HighlightRegionType.KEYWORD);
-    return super.visitIsExpression(node);
+    super.visitIsExpression(node);
   }
 
   @override
-  Object visitLibraryDirective(LibraryDirective node) {
+  void visitLibraryDirective(LibraryDirective node) {
     computer._addRegion_node(node, HighlightRegionType.DIRECTIVE);
     computer._addRegion_token(node.keyword, HighlightRegionType.BUILT_IN);
-    return super.visitLibraryDirective(node);
+    super.visitLibraryDirective(node);
   }
 
   @override
-  Object visitListLiteral(ListLiteral node) {
+  void visitListLiteral(ListLiteral node) {
     computer._addRegion_node(node, HighlightRegionType.LITERAL_LIST);
     computer._addRegion_token(node.constKeyword, HighlightRegionType.KEYWORD);
-    return super.visitListLiteral(node);
+    super.visitListLiteral(node);
   }
 
   @override
-  Object visitMapLiteral(MapLiteral node) {
+  void visitMapLiteral(MapLiteral node) {
     computer._addRegion_node(node, HighlightRegionType.LITERAL_MAP);
     computer._addRegion_token(node.constKeyword, HighlightRegionType.KEYWORD);
-    return super.visitMapLiteral(node);
+    super.visitMapLiteral(node);
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     computer._addRegion_token(
         node.externalKeyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(
@@ -597,117 +597,117 @@
         node.operatorKeyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(
         node.propertyKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitMethodDeclaration(node);
+    super.visitMethodDeclaration(node);
   }
 
   @override
-  Object visitMixinDeclaration(MixinDeclaration node) {
+  void visitMixinDeclaration(MixinDeclaration node) {
     computer._addRegion_token(node.mixinKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitMixinDeclaration(node);
+    super.visitMixinDeclaration(node);
   }
 
   @override
-  Object visitNativeClause(NativeClause node) {
+  void visitNativeClause(NativeClause node) {
     computer._addRegion_token(node.nativeKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitNativeClause(node);
+    super.visitNativeClause(node);
   }
 
   @override
-  Object visitNativeFunctionBody(NativeFunctionBody node) {
+  void visitNativeFunctionBody(NativeFunctionBody node) {
     computer._addRegion_token(node.nativeKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitNativeFunctionBody(node);
+    super.visitNativeFunctionBody(node);
   }
 
   @override
-  Object visitOnClause(OnClause node) {
+  void visitOnClause(OnClause node) {
     computer._addRegion_token(node.onKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitOnClause(node);
+    super.visitOnClause(node);
   }
 
   @override
-  Object visitPartDirective(PartDirective node) {
+  void visitPartDirective(PartDirective node) {
     computer._addRegion_node(node, HighlightRegionType.DIRECTIVE);
     computer._addRegion_token(node.keyword, HighlightRegionType.BUILT_IN);
-    return super.visitPartDirective(node);
+    super.visitPartDirective(node);
   }
 
   @override
-  Object visitPartOfDirective(PartOfDirective node) {
+  void visitPartOfDirective(PartOfDirective node) {
     computer._addRegion_node(node, HighlightRegionType.DIRECTIVE);
     computer._addRegion_tokenStart_tokenEnd(
         node.partKeyword, node.ofKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitPartOfDirective(node);
+    super.visitPartOfDirective(node);
   }
 
   @override
-  Object visitRethrowExpression(RethrowExpression node) {
+  void visitRethrowExpression(RethrowExpression node) {
     computer._addRegion_token(node.rethrowKeyword, HighlightRegionType.KEYWORD);
-    return super.visitRethrowExpression(node);
+    super.visitRethrowExpression(node);
   }
 
   @override
-  Object visitReturnStatement(ReturnStatement node) {
+  void visitReturnStatement(ReturnStatement node) {
     computer._addRegion_token(node.returnKeyword, HighlightRegionType.KEYWORD);
-    return super.visitReturnStatement(node);
+    super.visitReturnStatement(node);
   }
 
   @override
-  Object visitShowCombinator(ShowCombinator node) {
+  void visitShowCombinator(ShowCombinator node) {
     computer._addRegion_token(node.keyword, HighlightRegionType.BUILT_IN);
-    return super.visitShowCombinator(node);
+    super.visitShowCombinator(node);
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     computer._addIdentifierRegion(node);
-    return super.visitSimpleIdentifier(node);
+    super.visitSimpleIdentifier(node);
   }
 
   @override
-  Object visitSimpleStringLiteral(SimpleStringLiteral node) {
+  void visitSimpleStringLiteral(SimpleStringLiteral node) {
     computer._addRegion_node(node, HighlightRegionType.LITERAL_STRING);
-    return super.visitSimpleStringLiteral(node);
+    super.visitSimpleStringLiteral(node);
   }
 
   @override
-  Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
+  void visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     computer._addRegion_token(node.superKeyword, HighlightRegionType.KEYWORD);
-    return super.visitSuperConstructorInvocation(node);
+    super.visitSuperConstructorInvocation(node);
   }
 
   @override
-  Object visitSwitchCase(SwitchCase node) {
+  void visitSwitchCase(SwitchCase node) {
     computer._addRegion_token(node.keyword, HighlightRegionType.KEYWORD);
-    return super.visitSwitchCase(node);
+    super.visitSwitchCase(node);
   }
 
   @override
-  Object visitSwitchDefault(SwitchDefault node) {
+  void visitSwitchDefault(SwitchDefault node) {
     computer._addRegion_token(node.keyword, HighlightRegionType.KEYWORD);
-    return super.visitSwitchDefault(node);
+    super.visitSwitchDefault(node);
   }
 
   @override
-  Object visitSwitchStatement(SwitchStatement node) {
+  void visitSwitchStatement(SwitchStatement node) {
     computer._addRegion_token(node.switchKeyword, HighlightRegionType.KEYWORD);
-    return super.visitSwitchStatement(node);
+    super.visitSwitchStatement(node);
   }
 
   @override
-  Object visitThisExpression(ThisExpression node) {
+  void visitThisExpression(ThisExpression node) {
     computer._addRegion_token(node.thisKeyword, HighlightRegionType.KEYWORD);
-    return super.visitThisExpression(node);
+    super.visitThisExpression(node);
   }
 
   @override
-  Object visitTryStatement(TryStatement node) {
+  void visitTryStatement(TryStatement node) {
     computer._addRegion_token(node.tryKeyword, HighlightRegionType.KEYWORD);
     computer._addRegion_token(node.finallyKeyword, HighlightRegionType.KEYWORD);
-    return super.visitTryStatement(node);
+    super.visitTryStatement(node);
   }
 
   @override
-  Object visitTypeName(TypeName node) {
+  void visitTypeName(TypeName node) {
     DartType type = node.type;
     if (type != null) {
       if (type.isDynamic && node.name.name == "dynamic") {
@@ -715,35 +715,35 @@
         return null;
       }
     }
-    return super.visitTypeName(node);
+    super.visitTypeName(node);
   }
 
   @override
-  Object visitVariableDeclarationList(VariableDeclarationList node) {
+  void visitVariableDeclarationList(VariableDeclarationList node) {
     computer._addRegion_token(node.keyword, HighlightRegionType.KEYWORD);
-    return super.visitVariableDeclarationList(node);
+    super.visitVariableDeclarationList(node);
   }
 
   @override
-  Object visitWhileStatement(WhileStatement node) {
+  void visitWhileStatement(WhileStatement node) {
     computer._addRegion_token(node.whileKeyword, HighlightRegionType.KEYWORD);
-    return super.visitWhileStatement(node);
+    super.visitWhileStatement(node);
   }
 
   @override
-  Object visitWithClause(WithClause node) {
+  void visitWithClause(WithClause node) {
     computer._addRegion_token(node.withKeyword, HighlightRegionType.KEYWORD);
-    return super.visitWithClause(node);
+    super.visitWithClause(node);
   }
 
   @override
-  Object visitYieldStatement(YieldStatement node) {
+  void visitYieldStatement(YieldStatement node) {
     Token keyword = node.yieldKeyword;
     Token star = node.star;
     int offset = keyword.offset;
     int end = star != null ? star.end : keyword.end;
     computer._addRegion(offset, end - offset, HighlightRegionType.BUILT_IN);
-    return super.visitYieldStatement(node);
+    super.visitYieldStatement(node);
   }
 
   void _addRegions_functionBody(FunctionBody node) {
diff --git a/pkg/analysis_server/lib/src/computer/computer_highlights2.dart b/pkg/analysis_server/lib/src/computer/computer_highlights2.dart
index dad226c..6ae85e2 100644
--- a/pkg/analysis_server/lib/src/computer/computer_highlights2.dart
+++ b/pkg/analysis_server/lib/src/computer/computer_highlights2.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -435,257 +435,257 @@
 /**
  * An AST visitor for [DartUnitHighlightsComputer2].
  */
-class _DartUnitHighlightsComputerVisitor2 extends RecursiveAstVisitor<Object> {
+class _DartUnitHighlightsComputerVisitor2 extends RecursiveAstVisitor<void> {
   final DartUnitHighlightsComputer2 computer;
 
   _DartUnitHighlightsComputerVisitor2(this.computer);
 
   @override
-  Object visitAnnotation(Annotation node) {
+  void visitAnnotation(Annotation node) {
     computer._addIdentifierRegion_annotation(node);
-    return super.visitAnnotation(node);
+    super.visitAnnotation(node);
   }
 
   @override
-  Object visitAsExpression(AsExpression node) {
+  void visitAsExpression(AsExpression node) {
     computer._addRegion_token(node.asOperator, HighlightRegionType.BUILT_IN);
-    return super.visitAsExpression(node);
+    super.visitAsExpression(node);
   }
 
   @override
-  Object visitAssertStatement(AssertStatement node) {
+  void visitAssertStatement(AssertStatement node) {
     computer._addRegion_token(node.assertKeyword, HighlightRegionType.KEYWORD);
-    return super.visitAssertStatement(node);
+    super.visitAssertStatement(node);
   }
 
   @override
-  Object visitAwaitExpression(AwaitExpression node) {
+  void visitAwaitExpression(AwaitExpression node) {
     computer._addRegion_token(node.awaitKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitAwaitExpression(node);
+    super.visitAwaitExpression(node);
   }
 
   @override
-  Object visitBlockFunctionBody(BlockFunctionBody node) {
+  void visitBlockFunctionBody(BlockFunctionBody node) {
     _addRegions_functionBody(node);
-    return super.visitBlockFunctionBody(node);
+    super.visitBlockFunctionBody(node);
   }
 
   @override
-  Object visitBooleanLiteral(BooleanLiteral node) {
+  void visitBooleanLiteral(BooleanLiteral node) {
     computer._addRegion_node(node, HighlightRegionType.KEYWORD);
     computer._addRegion_node(node, HighlightRegionType.LITERAL_BOOLEAN);
-    return super.visitBooleanLiteral(node);
+    super.visitBooleanLiteral(node);
   }
 
   @override
-  Object visitBreakStatement(BreakStatement node) {
+  void visitBreakStatement(BreakStatement node) {
     computer._addRegion_token(node.breakKeyword, HighlightRegionType.KEYWORD);
-    return super.visitBreakStatement(node);
+    super.visitBreakStatement(node);
   }
 
   @override
-  Object visitCatchClause(CatchClause node) {
+  void visitCatchClause(CatchClause node) {
     computer._addRegion_token(node.catchKeyword, HighlightRegionType.KEYWORD);
     computer._addRegion_token(node.onKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitCatchClause(node);
+    super.visitCatchClause(node);
   }
 
   @override
-  Object visitClassDeclaration(ClassDeclaration node) {
+  void visitClassDeclaration(ClassDeclaration node) {
     computer._addRegion_token(node.classKeyword, HighlightRegionType.KEYWORD);
     computer._addRegion_token(
         node.abstractKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitClassDeclaration(node);
+    super.visitClassDeclaration(node);
   }
 
   @override
-  Object visitClassTypeAlias(ClassTypeAlias node) {
+  void visitClassTypeAlias(ClassTypeAlias node) {
     computer._addRegion_token(
         node.abstractKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitClassTypeAlias(node);
+    super.visitClassTypeAlias(node);
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     computer._addRegion_token(
         node.externalKeyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(
         node.factoryKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitConstructorDeclaration(node);
+    super.visitConstructorDeclaration(node);
   }
 
   @override
-  Object visitContinueStatement(ContinueStatement node) {
+  void visitContinueStatement(ContinueStatement node) {
     computer._addRegion_token(
         node.continueKeyword, HighlightRegionType.KEYWORD);
-    return super.visitContinueStatement(node);
+    super.visitContinueStatement(node);
   }
 
   @override
-  Object visitDoStatement(DoStatement node) {
+  void visitDoStatement(DoStatement node) {
     computer._addRegion_token(node.doKeyword, HighlightRegionType.KEYWORD);
     computer._addRegion_token(node.whileKeyword, HighlightRegionType.KEYWORD);
-    return super.visitDoStatement(node);
+    super.visitDoStatement(node);
   }
 
   @override
-  Object visitDoubleLiteral(DoubleLiteral node) {
+  void visitDoubleLiteral(DoubleLiteral node) {
     computer._addRegion_node(node, HighlightRegionType.LITERAL_DOUBLE);
-    return super.visitDoubleLiteral(node);
+    super.visitDoubleLiteral(node);
   }
 
   @override
-  Object visitEnumDeclaration(EnumDeclaration node) {
+  void visitEnumDeclaration(EnumDeclaration node) {
     computer._addRegion_token(node.enumKeyword, HighlightRegionType.KEYWORD);
-    return super.visitEnumDeclaration(node);
+    super.visitEnumDeclaration(node);
   }
 
   @override
-  Object visitExportDirective(ExportDirective node) {
+  void visitExportDirective(ExportDirective node) {
     computer._addRegion_node(node, HighlightRegionType.DIRECTIVE);
     computer._addRegion_token(node.keyword, HighlightRegionType.BUILT_IN);
-    return super.visitExportDirective(node);
+    super.visitExportDirective(node);
   }
 
   @override
-  Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
+  void visitExpressionFunctionBody(ExpressionFunctionBody node) {
     _addRegions_functionBody(node);
-    return super.visitExpressionFunctionBody(node);
+    super.visitExpressionFunctionBody(node);
   }
 
   @override
-  Object visitExtendsClause(ExtendsClause node) {
+  void visitExtendsClause(ExtendsClause node) {
     computer._addRegion_token(node.extendsKeyword, HighlightRegionType.KEYWORD);
-    return super.visitExtendsClause(node);
+    super.visitExtendsClause(node);
   }
 
   @override
-  Object visitFieldDeclaration(FieldDeclaration node) {
+  void visitFieldDeclaration(FieldDeclaration node) {
     computer._addRegion_token(node.staticKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitFieldDeclaration(node);
+    super.visitFieldDeclaration(node);
   }
 
   @override
-  Object visitForEachStatement(ForEachStatement node) {
+  void visitForEachStatement(ForEachStatement node) {
     computer._addRegion_token(node.awaitKeyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(node.forKeyword, HighlightRegionType.KEYWORD);
     computer._addRegion_token(node.inKeyword, HighlightRegionType.KEYWORD);
-    return super.visitForEachStatement(node);
+    super.visitForEachStatement(node);
   }
 
   @override
-  Object visitForStatement(ForStatement node) {
+  void visitForStatement(ForStatement node) {
     computer._addRegion_token(node.forKeyword, HighlightRegionType.KEYWORD);
-    return super.visitForStatement(node);
+    super.visitForStatement(node);
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     computer._addRegion_token(
         node.externalKeyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(
         node.propertyKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitFunctionDeclaration(node);
+    super.visitFunctionDeclaration(node);
   }
 
   @override
-  Object visitFunctionTypeAlias(FunctionTypeAlias node) {
+  void visitFunctionTypeAlias(FunctionTypeAlias node) {
     computer._addRegion_token(
         node.typedefKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitFunctionTypeAlias(node);
+    super.visitFunctionTypeAlias(node);
   }
 
   @override
-  Object visitGenericFunctionType(GenericFunctionType node) {
+  void visitGenericFunctionType(GenericFunctionType node) {
     computer._addRegion_token(
         node.functionKeyword, HighlightRegionType.KEYWORD);
-    return super.visitGenericFunctionType(node);
+    super.visitGenericFunctionType(node);
   }
 
   @override
-  Object visitGenericTypeAlias(GenericTypeAlias node) {
+  void visitGenericTypeAlias(GenericTypeAlias node) {
     computer._addRegion_token(node.typedefKeyword, HighlightRegionType.KEYWORD);
-    return super.visitGenericTypeAlias(node);
+    super.visitGenericTypeAlias(node);
   }
 
   @override
-  Object visitHideCombinator(HideCombinator node) {
+  void visitHideCombinator(HideCombinator node) {
     computer._addRegion_token(node.keyword, HighlightRegionType.BUILT_IN);
-    return super.visitHideCombinator(node);
+    super.visitHideCombinator(node);
   }
 
   @override
-  Object visitIfStatement(IfStatement node) {
+  void visitIfStatement(IfStatement node) {
     computer._addRegion_token(node.ifKeyword, HighlightRegionType.KEYWORD);
-    return super.visitIfStatement(node);
+    super.visitIfStatement(node);
   }
 
   @override
-  Object visitImplementsClause(ImplementsClause node) {
+  void visitImplementsClause(ImplementsClause node) {
     computer._addRegion_token(
         node.implementsKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitImplementsClause(node);
+    super.visitImplementsClause(node);
   }
 
   @override
-  Object visitImportDirective(ImportDirective node) {
+  void visitImportDirective(ImportDirective node) {
     computer._addRegion_node(node, HighlightRegionType.DIRECTIVE);
     computer._addRegion_token(node.keyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(
         node.deferredKeyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(node.asKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitImportDirective(node);
+    super.visitImportDirective(node);
   }
 
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     if (node.keyword != null) {
       computer._addRegion_token(node.keyword, HighlightRegionType.KEYWORD);
     }
-    return super.visitInstanceCreationExpression(node);
+    super.visitInstanceCreationExpression(node);
   }
 
   @override
-  Object visitIntegerLiteral(IntegerLiteral node) {
+  void visitIntegerLiteral(IntegerLiteral node) {
     computer._addRegion_node(node, HighlightRegionType.LITERAL_INTEGER);
-    return super.visitIntegerLiteral(node);
+    super.visitIntegerLiteral(node);
   }
 
   @override
-  Object visitIsExpression(IsExpression node) {
+  void visitIsExpression(IsExpression node) {
     computer._addRegion_token(node.isOperator, HighlightRegionType.KEYWORD);
-    return super.visitIsExpression(node);
+    super.visitIsExpression(node);
   }
 
   @override
-  Object visitLibraryDirective(LibraryDirective node) {
+  void visitLibraryDirective(LibraryDirective node) {
     computer._addRegion_node(node, HighlightRegionType.DIRECTIVE);
     computer._addRegion_token(node.keyword, HighlightRegionType.BUILT_IN);
-    return super.visitLibraryDirective(node);
+    super.visitLibraryDirective(node);
   }
 
   @override
-  Object visitLibraryIdentifier(LibraryIdentifier node) {
+  void visitLibraryIdentifier(LibraryIdentifier node) {
     computer._addRegion_node(node, HighlightRegionType.LIBRARY_NAME);
-    return null;
+    null;
   }
 
   @override
-  Object visitListLiteral(ListLiteral node) {
+  void visitListLiteral(ListLiteral node) {
     computer._addRegion_node(node, HighlightRegionType.LITERAL_LIST);
     computer._addRegion_token(node.constKeyword, HighlightRegionType.KEYWORD);
-    return super.visitListLiteral(node);
+    super.visitListLiteral(node);
   }
 
   @override
-  Object visitMapLiteral(MapLiteral node) {
+  void visitMapLiteral(MapLiteral node) {
     computer._addRegion_node(node, HighlightRegionType.LITERAL_MAP);
     computer._addRegion_token(node.constKeyword, HighlightRegionType.KEYWORD);
-    return super.visitMapLiteral(node);
+    super.visitMapLiteral(node);
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     computer._addRegion_token(
         node.externalKeyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(
@@ -694,117 +694,117 @@
         node.operatorKeyword, HighlightRegionType.BUILT_IN);
     computer._addRegion_token(
         node.propertyKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitMethodDeclaration(node);
+    super.visitMethodDeclaration(node);
   }
 
   @override
-  Object visitMixinDeclaration(MixinDeclaration node) {
+  void visitMixinDeclaration(MixinDeclaration node) {
     computer._addRegion_token(node.mixinKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitMixinDeclaration(node);
+    super.visitMixinDeclaration(node);
   }
 
   @override
-  Object visitNativeClause(NativeClause node) {
+  void visitNativeClause(NativeClause node) {
     computer._addRegion_token(node.nativeKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitNativeClause(node);
+    super.visitNativeClause(node);
   }
 
   @override
-  Object visitNativeFunctionBody(NativeFunctionBody node) {
+  void visitNativeFunctionBody(NativeFunctionBody node) {
     computer._addRegion_token(node.nativeKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitNativeFunctionBody(node);
+    super.visitNativeFunctionBody(node);
   }
 
   @override
-  Object visitOnClause(OnClause node) {
+  void visitOnClause(OnClause node) {
     computer._addRegion_token(node.onKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitOnClause(node);
+    super.visitOnClause(node);
   }
 
   @override
-  Object visitPartDirective(PartDirective node) {
+  void visitPartDirective(PartDirective node) {
     computer._addRegion_node(node, HighlightRegionType.DIRECTIVE);
     computer._addRegion_token(node.keyword, HighlightRegionType.BUILT_IN);
-    return super.visitPartDirective(node);
+    super.visitPartDirective(node);
   }
 
   @override
-  Object visitPartOfDirective(PartOfDirective node) {
+  void visitPartOfDirective(PartOfDirective node) {
     computer._addRegion_node(node, HighlightRegionType.DIRECTIVE);
     computer._addRegion_tokenStart_tokenEnd(
         node.partKeyword, node.ofKeyword, HighlightRegionType.BUILT_IN);
-    return super.visitPartOfDirective(node);
+    super.visitPartOfDirective(node);
   }
 
   @override
-  Object visitRethrowExpression(RethrowExpression node) {
+  void visitRethrowExpression(RethrowExpression node) {
     computer._addRegion_token(node.rethrowKeyword, HighlightRegionType.KEYWORD);
-    return super.visitRethrowExpression(node);
+    super.visitRethrowExpression(node);
   }
 
   @override
-  Object visitReturnStatement(ReturnStatement node) {
+  void visitReturnStatement(ReturnStatement node) {
     computer._addRegion_token(node.returnKeyword, HighlightRegionType.KEYWORD);
-    return super.visitReturnStatement(node);
+    super.visitReturnStatement(node);
   }
 
   @override
-  Object visitShowCombinator(ShowCombinator node) {
+  void visitShowCombinator(ShowCombinator node) {
     computer._addRegion_token(node.keyword, HighlightRegionType.BUILT_IN);
-    return super.visitShowCombinator(node);
+    super.visitShowCombinator(node);
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     computer._addIdentifierRegion(node);
-    return super.visitSimpleIdentifier(node);
+    super.visitSimpleIdentifier(node);
   }
 
   @override
-  Object visitSimpleStringLiteral(SimpleStringLiteral node) {
+  void visitSimpleStringLiteral(SimpleStringLiteral node) {
     computer._addRegion_node(node, HighlightRegionType.LITERAL_STRING);
-    return super.visitSimpleStringLiteral(node);
+    super.visitSimpleStringLiteral(node);
   }
 
   @override
-  Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
+  void visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     computer._addRegion_token(node.superKeyword, HighlightRegionType.KEYWORD);
-    return super.visitSuperConstructorInvocation(node);
+    super.visitSuperConstructorInvocation(node);
   }
 
   @override
-  Object visitSwitchCase(SwitchCase node) {
+  void visitSwitchCase(SwitchCase node) {
     computer._addRegion_token(node.keyword, HighlightRegionType.KEYWORD);
-    return super.visitSwitchCase(node);
+    super.visitSwitchCase(node);
   }
 
   @override
-  Object visitSwitchDefault(SwitchDefault node) {
+  void visitSwitchDefault(SwitchDefault node) {
     computer._addRegion_token(node.keyword, HighlightRegionType.KEYWORD);
-    return super.visitSwitchDefault(node);
+    super.visitSwitchDefault(node);
   }
 
   @override
-  Object visitSwitchStatement(SwitchStatement node) {
+  void visitSwitchStatement(SwitchStatement node) {
     computer._addRegion_token(node.switchKeyword, HighlightRegionType.KEYWORD);
-    return super.visitSwitchStatement(node);
+    super.visitSwitchStatement(node);
   }
 
   @override
-  Object visitThisExpression(ThisExpression node) {
+  void visitThisExpression(ThisExpression node) {
     computer._addRegion_token(node.thisKeyword, HighlightRegionType.KEYWORD);
-    return super.visitThisExpression(node);
+    super.visitThisExpression(node);
   }
 
   @override
-  Object visitTryStatement(TryStatement node) {
+  void visitTryStatement(TryStatement node) {
     computer._addRegion_token(node.tryKeyword, HighlightRegionType.KEYWORD);
     computer._addRegion_token(node.finallyKeyword, HighlightRegionType.KEYWORD);
-    return super.visitTryStatement(node);
+    super.visitTryStatement(node);
   }
 
   @override
-  Object visitTypeName(TypeName node) {
+  void visitTypeName(TypeName node) {
     DartType type = node.type;
     if (type != null) {
       if (type.isDynamic && node.name.name == "dynamic") {
@@ -812,35 +812,35 @@
         return null;
       }
     }
-    return super.visitTypeName(node);
+    super.visitTypeName(node);
   }
 
   @override
-  Object visitVariableDeclarationList(VariableDeclarationList node) {
+  void visitVariableDeclarationList(VariableDeclarationList node) {
     computer._addRegion_token(node.keyword, HighlightRegionType.KEYWORD);
-    return super.visitVariableDeclarationList(node);
+    super.visitVariableDeclarationList(node);
   }
 
   @override
-  Object visitWhileStatement(WhileStatement node) {
+  void visitWhileStatement(WhileStatement node) {
     computer._addRegion_token(node.whileKeyword, HighlightRegionType.KEYWORD);
-    return super.visitWhileStatement(node);
+    super.visitWhileStatement(node);
   }
 
   @override
-  Object visitWithClause(WithClause node) {
+  void visitWithClause(WithClause node) {
     computer._addRegion_token(node.withKeyword, HighlightRegionType.KEYWORD);
-    return super.visitWithClause(node);
+    super.visitWithClause(node);
   }
 
   @override
-  Object visitYieldStatement(YieldStatement node) {
+  void visitYieldStatement(YieldStatement node) {
     Token keyword = node.yieldKeyword;
     Token star = node.star;
     int offset = keyword.offset;
     int end = star != null ? star.end : keyword.end;
     computer._addRegion(offset, end - offset, HighlightRegionType.BUILT_IN);
-    return super.visitYieldStatement(node);
+    super.visitYieldStatement(node);
   }
 
   void _addRegions_functionBody(FunctionBody node) {
diff --git a/pkg/analysis_server/lib/src/computer/computer_outline.dart b/pkg/analysis_server/lib/src/computer/computer_outline.dart
index 490f5b5..24af9ba 100644
--- a/pkg/analysis_server/lib/src/computer/computer_outline.dart
+++ b/pkg/analysis_server/lib/src/computer/computer_outline.dart
@@ -63,6 +63,9 @@
       } else if (unitMember is FunctionTypeAlias) {
         FunctionTypeAlias alias = unitMember;
         unitContents.add(_newFunctionTypeAliasOutline(alias));
+      } else if (unitMember is GenericTypeAlias) {
+        GenericTypeAlias alias = unitMember;
+        unitContents.add(_newGenericTypeAliasOutline(alias));
       }
     }
     Outline unitOutline = _newUnitOutline(unitContents);
@@ -224,6 +227,27 @@
     return _nodeOutline(node, element);
   }
 
+  Outline _newGenericTypeAliasOutline(GenericTypeAlias node) {
+    var functionType = node.functionType;
+    TypeAnnotation returnType = functionType.returnType;
+    SimpleIdentifier nameNode = node.name;
+    String name = nameNode.name;
+    FormalParameterList parameters = functionType.parameters;
+    String parametersStr = _safeToSource(parameters);
+    String returnTypeStr = _safeToSource(returnType);
+    Element element = new Element(
+        ElementKind.FUNCTION_TYPE_ALIAS,
+        name,
+        Element.makeFlags(
+            isPrivate: Identifier.isPrivateName(name),
+            isDeprecated: _isDeprecated(node)),
+        location: _getLocationNode(nameNode),
+        parameters: parametersStr,
+        returnType: returnTypeStr,
+        typeParameters: _getTypeParametersStr(node.typeParameters));
+    return _nodeOutline(node, element);
+  }
+
   Outline _newMethodOutline(MethodDeclaration method) {
     TypeAnnotation returnType = method.returnType;
     SimpleIdentifier nameNode = method.name;
diff --git a/pkg/analysis_server/lib/src/computer/import_elements_computer.dart b/pkg/analysis_server/lib/src/computer/import_elements_computer.dart
index 292b748..7973eed 100644
--- a/pkg/analysis_server/lib/src/computer/import_elements_computer.dart
+++ b/pkg/analysis_server/lib/src/computer/import_elements_computer.dart
@@ -38,7 +38,7 @@
    * The resolution result associated with the defining compilation unit of the
    * library to which imports might be added.
    */
-  final ResolveResult libraryResult;
+  final ResolvedUnitResult libraryResult;
 
   /**
    * Initialize a newly created builder.
diff --git a/pkg/analysis_server/lib/src/computer/imported_elements_computer.dart b/pkg/analysis_server/lib/src/computer/imported_elements_computer.dart
index 6150a2c..a587098 100644
--- a/pkg/analysis_server/lib/src/computer/imported_elements_computer.dart
+++ b/pkg/analysis_server/lib/src/computer/imported_elements_computer.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -50,7 +50,7 @@
  * The visitor used by an [ImportedElementsComputer] to record the names of all
  * imported elements.
  */
-class _Visitor extends UnifyingAstVisitor<Object> {
+class _Visitor extends UnifyingAstVisitor<void> {
   /**
    * The element representing the library containing the code being visited.
    */
@@ -79,15 +79,14 @@
   _Visitor(this.containingLibrary, this.startOffset, this.endOffset);
 
   @override
-  Object visitNode(AstNode node) {
+  void visitNode(AstNode node) {
     if (node.offset <= endOffset && node.end >= startOffset) {
       node.visitChildren(this);
     }
-    return null;
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     if (!node.inDeclarationContext() &&
         node.offset <= endOffset &&
         node.end >= startOffset &&
@@ -119,7 +118,6 @@
         }
       }
     }
-    return null;
   }
 
   static bool _isConstructorDeclarationReturnType(SimpleIdentifier node) {
diff --git a/pkg/analysis_server/lib/src/computer/new_notifications.dart b/pkg/analysis_server/lib/src/computer/new_notifications.dart
index 0e11991..06aabc7 100644
--- a/pkg/analysis_server/lib/src/computer/new_notifications.dart
+++ b/pkg/analysis_server/lib/src/computer/new_notifications.dart
@@ -8,15 +8,16 @@
 import 'package:analysis_server/src/domains/analysis/occurrences.dart';
 import 'package:analysis_server/src/domains/analysis/occurrences_dart.dart';
 import 'package:analysis_server/src/protocol_server.dart' as protocol;
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer_plugin/src/utilities/navigation/navigation.dart';
 
 void new_sendDartNotificationNavigation(
-    AnalysisServer analysisServer, AnalysisResult result) {
+    AnalysisServer analysisServer, ResolvedUnitResult result) {
   var unit = result.unit;
   if (unit != null) {
     NavigationCollectorImpl collector = new NavigationCollectorImpl();
-    computeDartNavigation(collector, unit, null, null);
+    computeDartNavigation(
+        analysisServer.resourceProvider, collector, unit, null, null);
     collector.createRegions();
     var params = new protocol.AnalysisNavigationParams(
         result.path, collector.regions, collector.targets, collector.files);
@@ -25,7 +26,7 @@
 }
 
 void new_sendDartNotificationOccurrences(
-    AnalysisServer analysisServer, AnalysisResult result) {
+    AnalysisServer analysisServer, ResolvedUnitResult result) {
   var unit = result.unit;
   if (unit != null) {
     OccurrencesCollectorImpl collector = new OccurrencesCollectorImpl();
@@ -37,9 +38,12 @@
 }
 
 void new_sendErrorNotification(
-    AnalysisServer analysisServer, AnalysisResult result) {
+    AnalysisServer analysisServer, ResolvedUnitResult result) {
   var serverErrors = protocol.doAnalysisError_listFromEngine(
-      result.driver.analysisOptions, result.lineInfo, result.errors);
+    result.session.analysisContext.analysisOptions,
+    result.lineInfo,
+    result.errors,
+  );
   var params = new protocol.AnalysisErrorsParams(result.path, serverErrors);
   analysisServer.sendNotification(params.toNotification());
 }
diff --git a/pkg/analysis_server/lib/src/context_manager.dart b/pkg/analysis_server/lib/src/context_manager.dart
index 32c9e00..f38b989 100644
--- a/pkg/analysis_server/lib/src/context_manager.dart
+++ b/pkg/analysis_server/lib/src/context_manager.dart
@@ -899,8 +899,7 @@
         convertedErrors ?? <protocol.AnalysisError>[]);
   }
 
-  void _checkForAnalysisOptionsUpdate(
-      String path, ContextInfo info, ChangeType changeType) {
+  void _checkForAnalysisOptionsUpdate(String path, ContextInfo info) {
     if (AnalysisEngine.isAnalysisOptionsFileName(path, pathContext)) {
       AnalysisDriver driver = info.analysisDriver;
       if (driver == null) {
@@ -909,39 +908,29 @@
         // yet created a driver for that context.
         return;
       }
-      String contextRoot = info.folder.path;
-      ContextBuilder builder =
-          callbacks.createContextBuilder(info.folder, defaultContextOptions);
-      AnalysisOptions options = builder.getAnalysisOptions(contextRoot,
-          contextRoot: driver.contextRoot);
-      SourceFactory factory = builder.createSourceFactory(contextRoot, options);
-      driver.configure(analysisOptions: options, sourceFactory: factory);
       // TODO(brianwilkerson) Set exclusion patterns.
       _analyzeAnalysisOptionsFile(driver, path);
+      _updateAnalysisOptions(info);
     }
   }
 
-  void _checkForPackagespecUpdate(
-      String path, ContextInfo info, Folder folder) {
+  void _checkForPackagespecUpdate(String path, ContextInfo info) {
     // Check to see if this is the .packages file for this context and if so,
     // update the context's source factory.
     if (pathContext.basename(path) == PACKAGE_SPEC_NAME) {
-      String contextRoot = info.folder.path;
-      ContextBuilder builder =
-          callbacks.createContextBuilder(info.folder, defaultContextOptions);
       AnalysisDriver driver = info.analysisDriver;
-      if (driver != null) {
-        AnalysisOptions options = builder.getAnalysisOptions(contextRoot,
-            contextRoot: driver.contextRoot);
-        SourceFactory factory =
-            builder.createSourceFactory(contextRoot, options);
-        driver.configure(analysisOptions: options, sourceFactory: factory);
+      if (driver == null) {
+        // I suspect that this happens as a result of a race condition: server
+        // has determined that the file (at [path]) is in a context, but hasn't
+        // yet created a driver for that context.
+        return;
       }
+
+      _updateAnalysisOptions(info);
     }
   }
 
-  void _checkForPubspecUpdate(
-      String path, ContextInfo info, ChangeType changeType) {
+  void _checkForPubspecUpdate(String path, ContextInfo info) {
     if (_isPubspec(path)) {
       AnalysisDriver driver = info.analysisDriver;
       if (driver == null) {
@@ -951,6 +940,7 @@
         return;
       }
       _analyzePubspecFile(driver, path);
+      _updateAnalysisOptions(info);
     }
   }
 
@@ -1424,9 +1414,9 @@
           }
         }
     }
-    _checkForPackagespecUpdate(path, info, info.folder);
-    _checkForAnalysisOptionsUpdate(path, info, type);
-    _checkForPubspecUpdate(path, info, type);
+    _checkForPackagespecUpdate(path, info);
+    _checkForAnalysisOptionsUpdate(path, info);
+    _checkForPubspecUpdate(path, info);
   }
 
   /**
@@ -1555,6 +1545,17 @@
     return false;
   }
 
+  void _updateAnalysisOptions(ContextInfo info) {
+    AnalysisDriver driver = info.analysisDriver;
+    String contextRoot = info.folder.path;
+    ContextBuilder builder =
+        callbacks.createContextBuilder(info.folder, defaultContextOptions);
+    AnalysisOptions options = builder.getAnalysisOptions(contextRoot,
+        contextRoot: driver.contextRoot);
+    SourceFactory factory = builder.createSourceFactory(contextRoot, options);
+    driver.configure(analysisOptions: options, sourceFactory: factory);
+  }
+
   void _updateContextPackageUriResolver(Folder contextFolder) {
     ContextInfo info = getContextInfoFor(contextFolder);
     AnalysisDriver driver = info.analysisDriver;
diff --git a/pkg/analysis_server/lib/src/domain_analysis.dart b/pkg/analysis_server/lib/src/domain_analysis.dart
index a3e3257..d9d7164 100644
--- a/pkg/analysis_server/lib/src/domain_analysis.dart
+++ b/pkg/analysis_server/lib/src/domain_analysis.dart
@@ -17,12 +17,12 @@
 import 'package:analysis_server/src/plugin/result_merger.dart';
 import 'package:analysis_server/src/protocol/protocol_internal.dart';
 import 'package:analysis_server/src/protocol_server.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/error/error.dart' as engine;
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/generated/engine.dart' as engine;
-import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/protocol/protocol.dart' as plugin;
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:analyzer_plugin/protocol/protocol_constants.dart' as plugin;
@@ -47,24 +47,21 @@
    * Implement the `analysis.getErrors` request.
    */
   Future<void> getErrors(Request request) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
     String file = new AnalysisGetErrorsParams.fromRequest(request).file;
+    ResolvedUnitResult result = await server.getResolvedUnit(file);
 
-    void send(engine.AnalysisOptions analysisOptions, LineInfo lineInfo,
-        List<engine.AnalysisError> errors) {
-      if (lineInfo == null) {
-        server.sendResponse(new Response.getErrorsInvalidFile(request));
-      } else {
-        List<AnalysisError> protocolErrors =
-            doAnalysisError_listFromEngine(analysisOptions, lineInfo, errors);
-        server.sendResponse(
-            new AnalysisGetErrorsResult(protocolErrors).toResponse(request.id));
-      }
+    if (result?.state != ResultState.VALID) {
+      server.sendResponse(new Response.getErrorsInvalidFile(request));
+      return;
     }
 
-    AnalysisResult result = await server.getAnalysisResult(file);
-    send(result?.driver?.analysisOptions, result?.lineInfo, result?.errors);
+    List<AnalysisError> protocolErrors = doAnalysisError_listFromEngine(
+      result.session.analysisContext.analysisOptions,
+      result.lineInfo,
+      result.errors,
+    );
+    server.sendResponse(
+        new AnalysisGetErrorsResult(protocolErrors).toResponse(request.id));
   }
 
   /**
@@ -76,7 +73,7 @@
     var params = new AnalysisGetHoverParams.fromRequest(request);
 
     // Prepare the resolved units.
-    AnalysisResult result = await server.getAnalysisResult(params.file);
+    ResolvedUnitResult result = await server.getResolvedUnit(params.file);
     CompilationUnit unit = result?.unit;
 
     // Prepare the hovers.
@@ -105,9 +102,10 @@
     //
     // Prepare the resolved unit.
     //
-    AnalysisResult result = await server.getAnalysisResult(params.file);
-    if (result == null) {
+    ResolvedUnitResult result = await server.getResolvedUnit(params.file);
+    if (result?.state != ResultState.VALID) {
       server.sendResponse(new Response.getImportedElementsInvalidFile(request));
+      return;
     }
 
     List<ImportedElements> elements;
@@ -179,11 +177,12 @@
       // Compute navigation data generated by server.
       //
       List<AnalysisNavigationParams> allResults = <AnalysisNavigationParams>[];
-      AnalysisResult result = await server.getAnalysisResult(file);
-      CompilationUnit unit = result?.unit;
-      if (unit != null && result.exists) {
+      ResolvedUnitResult result = await server.getResolvedUnit(file);
+      if (result?.state == ResultState.VALID) {
+        CompilationUnit unit = result?.unit;
         NavigationCollectorImpl collector = new NavigationCollectorImpl();
-        computeDartNavigation(collector, unit, offset, length);
+        computeDartNavigation(
+            server.resourceProvider, collector, unit, offset, length);
         collector.createRegions();
         allResults.add(new AnalysisNavigationParams(
             file, collector.regions, collector.targets, collector.files));
@@ -246,14 +245,15 @@
     var params = new AnalysisGetSignatureParams.fromRequest(request);
 
     // Prepare the resolved units.
-    AnalysisResult result = await server.getAnalysisResult(params.file);
-    CompilationUnit unit = result?.unit;
-    if (unit == null) {
+    ResolvedUnitResult result = await server.getResolvedUnit(params.file);
+
+    if (result?.state != ResultState.VALID) {
       server.sendResponse(new Response.getSignatureInvalidFile(request));
       return;
     }
 
     // Ensure the offset provided is a valid location in the file.
+    final unit = result.unit;
     final computer = new DartUnitSignatureComputer(unit, params.offset);
     if (!computer.offsetIsValid) {
       server.sendResponse(new Response.getSignatureInvalidOffset(request));
diff --git a/pkg/analysis_server/lib/src/domain_completion.dart b/pkg/analysis_server/lib/src/domain_completion.dart
index 10597e3..ce73d98 100644
--- a/pkg/analysis_server/lib/src/domain_completion.dart
+++ b/pkg/analysis_server/lib/src/domain_completion.dart
@@ -15,6 +15,7 @@
 import 'package:analysis_server/src/services/completion/completion_core.dart';
 import 'package:analysis_server/src/services/completion/completion_performance.dart';
 import 'package:analysis_server/src/services/completion/dart/completion_manager.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer_plugin/protocol/protocol.dart' as plugin;
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
@@ -172,9 +173,9 @@
     String filePath = params.file;
     int offset = params.offset;
 
-    AnalysisResult result = await server.getAnalysisResult(filePath);
+    ResolvedUnitResult result = await server.getResolvedUnit(filePath);
 
-    if (result != null && result.exists) {
+    if (result?.state == ResultState.VALID) {
       if (offset < 0 || offset > result.content.length) {
         server.sendResponse(new Response.invalidParameter(
             request,
diff --git a/pkg/analysis_server/lib/src/domain_kythe.dart b/pkg/analysis_server/lib/src/domain_kythe.dart
index c4fceb6..2bfc8c0 100644
--- a/pkg/analysis_server/lib/src/domain_kythe.dart
+++ b/pkg/analysis_server/lib/src/domain_kythe.dart
@@ -13,7 +13,7 @@
 import 'package:analysis_server/src/plugin/plugin_manager.dart';
 import 'package:analysis_server/src/plugin/result_merger.dart';
 import 'package:analysis_server/src/services/kythe/kythe_visitors.dart';
-import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/element/inheritance_manager2.dart';
 import 'package:analyzer/src/generated/type_system.dart';
@@ -56,10 +56,9 @@
       //
       List<KytheGetKytheEntriesResult> allResults =
           <KytheGetKytheEntriesResult>[];
-      AnalysisResult result = await server.getAnalysisResult(file);
-      CompilationUnit unit = result?.unit;
-      TypeSystem typeSystem = result.libraryElement.context.typeSystem;
-      if (unit != null && result.exists) {
+      ResolvedUnitResult result = await server.getResolvedUnit(file);
+      if (result?.state == ResultState.VALID) {
+        TypeSystem typeSystem = await result.libraryElement.session.typeSystem;
         List<KytheEntry> entries = <KytheEntry>[];
         // TODO(brianwilkerson) Figure out how to get the list of files.
         List<String> files = <String>[];
diff --git a/pkg/analysis_server/lib/src/domains/analysis/navigation_dart.dart b/pkg/analysis_server/lib/src/domains/analysis/navigation_dart.dart
index 46a455e..74bbf87 100644
--- a/pkg/analysis_server/lib/src/domains/analysis/navigation_dart.dart
+++ b/pkg/analysis_server/lib/src/domains/analysis/navigation_dart.dart
@@ -8,17 +8,22 @@
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
+import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/utilities/navigation/navigation.dart';
 
-NavigationCollector computeDartNavigation(NavigationCollector collector,
-    CompilationUnit unit, int offset, int length) {
+NavigationCollector computeDartNavigation(
+    ResourceProvider resourceProvider,
+    NavigationCollector collector,
+    CompilationUnit unit,
+    int offset,
+    int length) {
   _DartNavigationCollector dartCollector =
       new _DartNavigationCollector(collector);
   _DartNavigationComputerVisitor visitor =
-      new _DartNavigationComputerVisitor(dartCollector);
+      new _DartNavigationComputerVisitor(resourceProvider, dartCollector);
   if (offset == null || length == null) {
     unit.accept(visitor);
   } else {
@@ -87,9 +92,10 @@
 }
 
 class _DartNavigationComputerVisitor extends RecursiveAstVisitor {
+  final ResourceProvider resourceProvider;
   final _DartNavigationCollector computer;
 
-  _DartNavigationComputerVisitor(this.computer);
+  _DartNavigationComputerVisitor(this.resourceProvider, this.computer);
 
   @override
   visitAnnotation(Annotation node) {
@@ -352,7 +358,7 @@
   void _addUriDirectiveRegion(UriBasedDirective node, Element element) {
     if (element != null) {
       Source source = element.source;
-      if (element.context.exists(source)) {
+      if (resourceProvider.getResource(source.fullName).exists) {
         computer._addRegionForNode(node.uri, element);
       }
     }
diff --git a/pkg/analysis_server/lib/src/domains/execution/completion.dart b/pkg/analysis_server/lib/src/domains/execution/completion.dart
index c3a218e..a8a55f1 100644
--- a/pkg/analysis_server/lib/src/domains/execution/completion.dart
+++ b/pkg/analysis_server/lib/src/domains/execution/completion.dart
@@ -14,6 +14,7 @@
 import 'package:analysis_server/src/services/completion/completion_core.dart';
 import 'package:analysis_server/src/services/completion/completion_performance.dart';
 import 'package:analysis_server/src/services/completion/dart/completion_manager.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
@@ -81,7 +82,7 @@
 
     // Update the context file content to include the code being completed.
     // Then resolve it, and restore the file to its initial state.
-    AnalysisResult targetResult;
+    ResolvedUnitResult targetResult;
     String contentFileOverlay = fileContentOverlay[contextFile];
     try {
       fileContentOverlay[contextFile] = targetCode;
diff --git a/pkg/analysis_server/lib/src/edit/edit_dartfix.dart b/pkg/analysis_server/lib/src/edit/edit_dartfix.dart
index 2dc141b..72b62a6 100644
--- a/pkg/analysis_server/lib/src/edit/edit_dartfix.dart
+++ b/pkg/analysis_server/lib/src/edit/edit_dartfix.dart
@@ -2,7 +2,6 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analysis_server/plugin/edit/assist/assist_dart.dart';
 import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
 import 'package:analysis_server/protocol/protocol.dart';
 import 'package:analysis_server/protocol/protocol_generated.dart';
@@ -11,13 +10,15 @@
 import 'package:analysis_server/src/edit/fix/prefer_mixin_fix.dart';
 import 'package:analysis_server/src/services/correction/fix.dart';
 import 'package:analysis_server/src/services/correction/fix_internal.dart';
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/error/error.dart';
+import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/dart/analysis/ast_provider_driver.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/dart/ast/utilities.dart';
+import 'package:analyzer/src/error/codes.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/lint/linter.dart';
 import 'package:analyzer/src/lint/linter_visitor.dart';
@@ -124,32 +125,52 @@
         }
         continue;
       }
-      AnalysisResult result = await server.getAnalysisResult(res.path);
-      CompilationUnit unit = result?.unit;
-      if (unit != null) {
-        if (!hasErrors) {
-          for (AnalysisError error in result.errors) {
-            if (!(await fixError(result, error))) {
-              if (error.errorCode.type == ErrorType.SYNTACTIC_ERROR) {
-                hasErrors = true;
+
+      const maxAttempts = 3;
+      int attempt = 0;
+      while (attempt < maxAttempts) {
+        ResolvedUnitResult result = await server.getResolvedUnit(res.path);
+
+        // TODO(danrubel): Investigate why InconsistentAnalysisException occurs
+        // and whether this is an appropriate way to handle the situation
+        ++attempt;
+        try {
+          CompilationUnit unit = result?.unit;
+          if (unit != null) {
+            if (!hasErrors) {
+              for (AnalysisError error in result.errors) {
+                if (!(await fixError(result, error))) {
+                  if (error.errorCode.type == ErrorType.SYNTACTIC_ERROR) {
+                    hasErrors = true;
+                  }
+                }
               }
             }
+            Source source = result.unit.declaredElement.source;
+            for (Linter linter in linters) {
+              if (linter != null) {
+                linter.reporter.source = source;
+              }
+            }
+            var lintVisitors = lintVisitorsBySession[result.session] ??=
+                await _setupLintVisitors(result, linters);
+            if (lintVisitors.astVisitor != null) {
+              unit.accept(lintVisitors.astVisitor);
+            }
+            unit.accept(lintVisitors.linterVisitor);
+            for (LinterFix fix in fixes) {
+              await fix.applyLocalFixes(result);
+            }
           }
-        }
-        Source source = result.sourceFactory.forUri2(result.uri);
-        for (Linter linter in linters) {
-          if (linter != null) {
-            linter.reporter.source = source;
+          break;
+        } on InconsistentAnalysisException catch (_) {
+          if (attempt == maxAttempts) {
+            // TODO(danrubel): Consider improving the edit.dartfix protocol
+            // to gracefully report inconsistent results for a particular
+            // file rather than aborting the entire operation.
+            rethrow;
           }
-        }
-        var lintVisitors = lintVisitorsBySession[result.session] ??=
-            await _setupLintVisitors(result, linters);
-        if (lintVisitors.astVisitor != null) {
-          unit.accept(lintVisitors.astVisitor);
-        }
-        unit.accept(lintVisitors.linterVisitor);
-        for (LinterFix fix in fixes) {
-          await fix.applyLocalFixes(result);
+          // try again
         }
       }
     }
@@ -177,7 +198,7 @@
         .toResponse(request.id);
   }
 
-  Future<bool> fixError(AnalysisResult result, AnalysisError error) async {
+  Future<bool> fixError(ResolvedUnitResult result, AnalysisError error) async {
     if (error.errorCode ==
         StaticTypeWarningCode.WRONG_NUMBER_OF_TYPE_ARGUMENTS_CONSTRUCTOR) {
       // TODO(danrubel): Rather than comparing the error codes individually,
@@ -190,11 +211,7 @@
       return false;
     }
 
-    final dartContext = new DartFixContextImpl(
-        new FixContextImpl(
-            server.resourceProvider, result.driver, error, result.errors),
-        new AstProviderForDriver(result.driver),
-        result.unit);
+    final dartContext = new DartFixContextImpl(result, error);
     final processor = new FixProcessor(dartContext);
     Fix fix = await processor.computeFix();
     final location = locationFor(result, error.offset, error.length);
@@ -226,7 +243,7 @@
     return false;
   }
 
-  Location locationFor(AnalysisResult result, int offset, int length) {
+  Location locationFor(ResolvedUnitResult result, int offset, int length) {
     final locInfo = result.unit.lineInfo.getLocation(offset);
     final location = new Location(
         result.path, offset, length, locInfo.lineNumber, locInfo.columnNumber);
@@ -234,7 +251,7 @@
   }
 
   Future<_LintVisitors> _setupLintVisitors(
-      AnalysisResult result, List<Linter> linters) async {
+      ResolvedUnitResult result, List<Linter> linters) async {
     final visitors = <AstVisitor>[];
     final registry = new NodeLintRegistry(false);
     // TODO(paulberry): use an API that provides this information more readily
@@ -246,7 +263,7 @@
       if (identical(cu, unitElement)) {
         allUnits.add(currentUnit);
       } else {
-        var result = await session.getResolvedAst(cu.source.fullName);
+        var result = await session.getResolvedUnit(cu.source.fullName);
         allUnits.add(LinterContextUnit(result.content, result.unit));
       }
     }
@@ -258,11 +275,8 @@
         if (visitor != null) {
           visitors.add(visitor);
         }
-        if (linter is NodeLintRuleWithContext) {
-          (linter as NodeLintRuleWithContext)
-              .registerNodeProcessors(registry, context);
-        } else if (linter is NodeLintRule) {
-          (linter as NodeLintRule).registerNodeProcessors(registry);
+        if (linter is NodeLintRule) {
+          (linter as NodeLintRule).registerNodeProcessors(registry, context);
         }
       }
     }
@@ -276,29 +290,6 @@
   }
 }
 
-class EditDartFixAssistContext implements DartAssistContext {
-  @override
-  final AnalysisDriver analysisDriver;
-
-  @override
-  final int selectionLength;
-
-  @override
-  final int selectionOffset;
-
-  @override
-  final Source source;
-
-  @override
-  final CompilationUnit unit;
-
-  EditDartFixAssistContext(
-      EditDartFix dartFix, this.source, this.unit, AstNode node)
-      : analysisDriver = dartFix.server.getAnalysisDriver(source.fullName),
-        selectionOffset = node.offset,
-        selectionLength = 0;
-}
-
 abstract class LinterFix implements ErrorReporter {
   final EditDartFix dartFix;
 
@@ -308,7 +299,7 @@
   LinterFix(this.dartFix);
 
   /// Apply fixes for the current compilation unit.
-  Future<void> applyLocalFixes(AnalysisResult result);
+  Future<void> applyLocalFixes(ResolvedUnitResult result);
 
   /// Apply any fixes remaining after analysis is complete.
   Future<void> applyRemainingFixes();
diff --git a/pkg/analysis_server/lib/src/edit/edit_domain.dart b/pkg/analysis_server/lib/src/edit/edit_domain.dart
index f7a28e7..8f3a144 100644
--- a/pkg/analysis_server/lib/src/edit/edit_domain.dart
+++ b/pkg/analysis_server/lib/src/edit/edit_domain.dart
@@ -5,9 +5,7 @@
 import 'dart:async';
 
 import 'package:analysis_server/plugin/edit/assist/assist_core.dart';
-import 'package:analysis_server/plugin/edit/assist/assist_dart.dart';
 import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
-import 'package:analysis_server/plugin/edit/fix/fix_dart.dart';
 import 'package:analysis_server/protocol/protocol_constants.dart';
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/collections.dart';
@@ -19,22 +17,21 @@
 import 'package:analysis_server/src/protocol_server.dart' hide Element;
 import 'package:analysis_server/src/services/completion/postfix/postfix_completion.dart';
 import 'package:analysis_server/src/services/completion/statement/statement_completion.dart';
+import 'package:analysis_server/src/services/correction/assist.dart';
 import 'package:analysis_server/src/services/correction/assist_internal.dart';
+import 'package:analysis_server/src/services/correction/fix.dart';
 import 'package:analysis_server/src/services/correction/fix_internal.dart';
 import 'package:analysis_server/src/services/correction/organize_directives.dart';
 import 'package:analysis_server/src/services/correction/sort_members.dart';
 import 'package:analysis_server/src/services/correction/status.dart';
 import 'package:analysis_server/src/services/refactoring/refactoring.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/error/error.dart' as engine;
-import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/dart/analysis/ast_provider_driver.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
+import 'package:analyzer/src/dart/ast/utilities.dart';
 import 'package:analyzer/src/dart/scanner/scanner.dart' as engine;
 import 'package:analyzer/src/error/codes.dart' as engine;
 import 'package:analyzer/src/generated/engine.dart' as engine;
@@ -175,7 +172,7 @@
     Map<PluginInfo, Future<plugin.Response>> pluginFutures;
     plugin.EditGetAssistsParams requestParams =
         new plugin.EditGetAssistsParams(file, offset, length);
-    AnalysisDriver driver = server.getAnalysisDriver(file);
+    var driver = server.getAnalysisDriver(file);
     if (driver == null) {
       pluginFutures = <PluginInfo, Future<plugin.Response>>{};
     } else {
@@ -185,15 +182,11 @@
     //
     // Compute fixes associated with server-generated errors.
     //
-    AnalysisResult result = await server.getAnalysisResult(file);
+    ResolvedUnitResult result = await server.getResolvedUnit(file);
     if (result != null) {
-      CompilationUnit unit = result.unit;
-      CompilationUnitElement compilationUnitElement =
-          resolutionMap.elementDeclaredByCompilationUnit(unit);
-      DartAssistContext dartAssistContext = new _DartAssistContextForValues(
-          compilationUnitElement.source, offset, length, driver, unit);
+      var context = new DartAssistContextImpl(result, offset, length);
       try {
-        AssistProcessor processor = new AssistProcessor(dartAssistContext);
+        AssistProcessor processor = new AssistProcessor(context);
         List<Assist> assists = await processor.compute();
         assists.sort(Assist.SORT_BY_RELEVANCE);
         for (Assist assist in assists) {
@@ -236,7 +229,7 @@
     Map<PluginInfo, Future<plugin.Response>> pluginFutures;
     plugin.EditGetFixesParams requestParams =
         new plugin.EditGetFixesParams(file, offset);
-    AnalysisDriver driver = server.getAnalysisDriver(file);
+    var driver = server.getAnalysisDriver(file);
     if (driver == null) {
       pluginFutures = <PluginInfo, Future<plugin.Response>>{};
     } else {
@@ -249,7 +242,7 @@
     List<AnalysisErrorFixes> errorFixesList = null;
     while (errorFixesList == null) {
       try {
-        errorFixesList = await _computeServerErrorFixes(driver, file, offset);
+        errorFixesList = await _computeServerErrorFixes(file, offset);
       } on InconsistentAnalysisException {
         // Loop around to try again to compute the fixes.
       }
@@ -281,26 +274,17 @@
     var params = new EditGetPostfixCompletionParams.fromRequest(request);
     SourceChange change;
 
-    AnalysisResult result = await server.getAnalysisResult(params.file);
+    ResolvedUnitResult result = await server.getResolvedUnit(params.file);
     if (result != null) {
-      CompilationUnit unit = result.unit;
-      CompilationUnitElement unitElement =
-          resolutionMap.elementDeclaredByCompilationUnit(unit);
-      if (unitElement.context != null) {
-        PostfixCompletionContext context = new PostfixCompletionContext(
-            params.file,
-            result.lineInfo,
-            params.offset,
-            params.key,
-            result.driver,
-            unit,
-            unitElement,
-            result.errors);
-        PostfixCompletionProcessor processor =
-            new PostfixCompletionProcessor(context);
-        PostfixCompletion completion = await processor.compute();
-        change = completion?.change;
-      }
+      PostfixCompletionContext context = new PostfixCompletionContext(
+        result,
+        params.offset,
+        params.key,
+      );
+      PostfixCompletionProcessor processor =
+          new PostfixCompletionProcessor(context);
+      PostfixCompletion completion = await processor.compute();
+      change = completion?.change;
     }
     if (change == null) {
       change = new SourceChange("", edits: []);
@@ -317,24 +301,13 @@
     var params = new EditGetStatementCompletionParams.fromRequest(request);
     SourceChange change;
 
-    AnalysisResult result = await server.getAnalysisResult(params.file);
+    ResolvedUnitResult result = await server.getResolvedUnit(params.file);
     if (result != null) {
-      CompilationUnit unit = result.unit;
-      CompilationUnitElement unitElement =
-          resolutionMap.elementDeclaredByCompilationUnit(unit);
-      if (unitElement.context != null) {
-        StatementCompletionContext context = new StatementCompletionContext(
-            params.file,
-            result.lineInfo,
-            params.offset,
-            unit,
-            unitElement,
-            result.errors);
-        StatementCompletionProcessor processor =
-            new StatementCompletionProcessor(context);
-        StatementCompletion completion = await processor.compute();
-        change = completion.change;
-      }
+      var context = new StatementCompletionContext(result, params.offset);
+      StatementCompletionProcessor processor =
+          new StatementCompletionProcessor(context);
+      StatementCompletion completion = await processor.compute();
+      change = completion.change;
     }
     if (change == null) {
       change = new SourceChange("", edits: []);
@@ -404,7 +377,7 @@
     //
     // Prepare the resolved unit.
     //
-    AnalysisResult result = await server.getAnalysisResult(params.file);
+    ResolvedUnitResult result = await server.getResolvedUnit(params.file);
     if (result == null) {
       server.sendResponse(new Response.importElementsInvalidFile(request));
     }
@@ -413,7 +386,7 @@
     if (libraryUnit != result.unit.declaredElement) {
       // The file in the request is a part of a library. We need to pass the
       // defining compilation unit to the computer, not the part.
-      result = await server.getAnalysisResult(libraryUnit.source.fullName);
+      result = await server.getResolvedUnit(libraryUnit.source.fullName);
       if (result == null) {
         server.sendResponse(new Response.importElementsInvalidFile(request));
       }
@@ -439,25 +412,15 @@
     var params = new EditGetPostfixCompletionParams.fromRequest(request);
     bool value = false;
 
-    AnalysisResult result = await server.getAnalysisResult(params.file);
+    ResolvedUnitResult result = await server.getResolvedUnit(params.file);
     if (result != null) {
-      CompilationUnit unit = result.unit;
-      CompilationUnitElement unitElement =
-          resolutionMap.elementDeclaredByCompilationUnit(unit);
-      if (unitElement.context != null) {
-        PostfixCompletionContext context = new PostfixCompletionContext(
-            params.file,
-            result.lineInfo,
-            params.offset,
-            params.key,
-            result.driver,
-            unit,
-            unitElement,
-            result.errors);
-        PostfixCompletionProcessor processor =
-            new PostfixCompletionProcessor(context);
-        value = await processor.isApplicable();
-      }
+      var context = new PostfixCompletionContext(
+        result,
+        params.offset,
+        params.key,
+      );
+      var processor = new PostfixCompletionProcessor(context);
+      value = await processor.isApplicable();
     }
 
     Response response = new EditIsPostfixCompletionApplicableResult(value)
@@ -491,7 +454,7 @@
       return;
     }
     // Prepare the file information.
-    AnalysisResult result = await server.getAnalysisResult(file);
+    ResolvedUnitResult result = await server.getResolvedUnit(file);
     if (result == null) {
       server.sendResponse(new Response.fileNotAnalyzed(request, file));
       return;
@@ -526,8 +489,8 @@
       return;
     }
     // Prepare the file information.
-    AnalysisDriver driver = server.getAnalysisDriver(file);
-    ParseResult result = await driver?.parseFile(file);
+    var driver = server.getAnalysisDriver(file);
+    ParsedUnitResult result = await driver?.parseFile(file);
     if (result == null) {
       server.sendResponse(new Response.fileNotAnalyzed(request, file));
       return;
@@ -555,29 +518,20 @@
    * Compute and return the fixes associated with server-generated errors.
    */
   Future<List<AnalysisErrorFixes>> _computeServerErrorFixes(
-      AnalysisDriver driver, String file, int offset) async {
+      String file, int offset) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     List<AnalysisErrorFixes> errorFixesList = <AnalysisErrorFixes>[];
-    AnalysisResult result = await server.getAnalysisResult(file);
+    var result = await server.getResolvedUnit(file);
     if (result != null) {
-      CompilationUnit unit = result.unit;
       LineInfo lineInfo = result.lineInfo;
       int requestLine = lineInfo.getLocation(offset).lineNumber;
-      List<engine.AnalysisError> errorsCopy = new List.from(result.errors);
       for (engine.AnalysisError error in result.errors) {
         int errorLine = lineInfo.getLocation(error.offset).lineNumber;
         if (errorLine == requestLine) {
-          AstProvider astProvider = new AstProviderForDriver(driver);
-          DartFixContext context = new _DartFixContextImpl(
-              server.resourceProvider,
-              result.driver,
-              astProvider,
-              unit,
-              error,
-              errorsCopy);
+          var context = new DartFixContextImpl(result, error);
           List<Fix> fixes =
-              await new DefaultFixContributor().internalComputeFixes(context);
+              await new DartFixContributor().computeFixes(context);
           if (fixes.isNotEmpty) {
             fixes.sort(Fix.SORT_BY_RELEVANCE);
             AnalysisError serverError =
@@ -611,22 +565,22 @@
     List<RefactoringKind> kinds = <RefactoringKind>[];
     // Check nodes.
     {
-      var analysisResult = await server.getAnalysisResult(file);
-      if (analysisResult != null) {
+      var resolvedUnit = await server.getResolvedUnit(file);
+      if (resolvedUnit != null) {
         // Try EXTRACT_LOCAL_VARIABLE.
-        if (new ExtractLocalRefactoring(analysisResult, offset, length)
+        if (new ExtractLocalRefactoring(resolvedUnit, offset, length)
             .isAvailable()) {
           kinds.add(RefactoringKind.EXTRACT_LOCAL_VARIABLE);
         }
         // Try EXTRACT_METHOD.
-        if (new ExtractMethodRefactoring(searchEngine,
-                server.getAstProvider(file), analysisResult, offset, length)
+        if (new ExtractMethodRefactoring(
+                searchEngine, resolvedUnit, offset, length)
             .isAvailable()) {
           kinds.add(RefactoringKind.EXTRACT_METHOD);
         }
         // Try EXTRACT_WIDGETS.
         if (new ExtractWidgetRefactoring(
-                searchEngine, analysisResult, offset, length)
+                searchEngine, resolvedUnit, offset, length)
             .isAvailable()) {
           kinds.add(RefactoringKind.EXTRACT_WIDGET);
         }
@@ -634,23 +588,28 @@
     }
     // check elements
     {
-      Element element = await server.getElementAtOffset(file, offset);
-      if (element != null) {
-        // try CONVERT_METHOD_TO_GETTER
-        if (element is ExecutableElement) {
-          Refactoring refactoring = new ConvertMethodToGetterRefactoring(
-              searchEngine, server.getAstProvider(file), element);
-          RefactoringStatus status = await refactoring.checkInitialConditions();
-          if (!status.hasFatalError) {
-            kinds.add(RefactoringKind.CONVERT_METHOD_TO_GETTER);
+      var resolvedUnit = await server.getResolvedUnit(file);
+      if (resolvedUnit != null) {
+        var node = new NodeLocator(offset).searchWithin(resolvedUnit.unit);
+        var element = server.getElementOfNode(node);
+        if (element != null) {
+          // try CONVERT_METHOD_TO_GETTER
+          if (element is ExecutableElement) {
+            Refactoring refactoring = new ConvertMethodToGetterRefactoring(
+                searchEngine, resolvedUnit.session, element);
+            RefactoringStatus status =
+                await refactoring.checkInitialConditions();
+            if (!status.hasFatalError) {
+              kinds.add(RefactoringKind.CONVERT_METHOD_TO_GETTER);
+            }
           }
-        }
-        // try RENAME
-        {
-          RenameRefactoring renameRefactoring = new RenameRefactoring(
-              refactoringWorkspace, server.getAstProvider(file), element);
-          if (renameRefactoring != null) {
-            kinds.add(RefactoringKind.RENAME);
+          // try RENAME
+          {
+            RenameRefactoring renameRefactoring = new RenameRefactoring(
+                refactoringWorkspace, resolvedUnit.session, element);
+            if (renameRefactoring != null) {
+              kinds.add(RefactoringKind.RENAME);
+            }
           }
         }
       }
@@ -689,60 +648,6 @@
 }
 
 /**
- * Implementation of [DartAssistContext] that is based on the values passed
- * in the constructor, as opposite to be partially based on [AssistContext].
- */
-class _DartAssistContextForValues implements DartAssistContext {
-  @override
-  final Source source;
-
-  @override
-  final int selectionOffset;
-
-  @override
-  final int selectionLength;
-
-  @override
-  final AnalysisDriver analysisDriver;
-
-  @override
-  final CompilationUnit unit;
-
-  _DartAssistContextForValues(this.source, this.selectionOffset,
-      this.selectionLength, this.analysisDriver, this.unit);
-}
-
-/**
- * And implementation of [DartFixContext].
- */
-class _DartFixContextImpl implements DartFixContext {
-  @override
-  final ResourceProvider resourceProvider;
-
-  @override
-  final AnalysisDriver analysisDriver;
-
-  @override
-  final AstProvider astProvider;
-
-  @override
-  final CompilationUnit unit;
-
-  @override
-  final engine.AnalysisError error;
-
-  @override
-  final List<engine.AnalysisError> errors;
-
-  _DartFixContextImpl(this.resourceProvider, this.analysisDriver,
-      this.astProvider, this.unit, this.error, this.errors);
-
-  @override
-  GetTopLevelDeclarations get getTopLevelDeclarations =>
-      analysisDriver.getTopLevelNameDeclarations;
-}
-
-/**
  * An object managing a single [Refactoring] instance.
  *
  * The instance is identified by its kind, file, offset and length.
@@ -940,28 +845,35 @@
     }
     // create a new Refactoring instance
     if (kind == RefactoringKind.CONVERT_GETTER_TO_METHOD) {
-      Element element = await server.getElementAtOffset(file, offset);
-      if (element != null) {
-        if (element is ExecutableElement) {
-          refactoring = new ConvertGetterToMethodRefactoring(
-              searchEngine, server.getAstProvider(file), element);
+      var resolvedUnit = await server.getResolvedUnit(file);
+      if (resolvedUnit != null) {
+        var node = new NodeLocator(offset).searchWithin(resolvedUnit.unit);
+        var element = server.getElementOfNode(node);
+        if (element != null) {
+          if (element is ExecutableElement) {
+            refactoring = new ConvertGetterToMethodRefactoring(
+                searchEngine, resolvedUnit.session, element);
+          }
         }
       }
     }
     if (kind == RefactoringKind.CONVERT_METHOD_TO_GETTER) {
-      Element element = await server.getElementAtOffset(file, offset);
-      if (element != null) {
-        if (element is ExecutableElement) {
-          refactoring = new ConvertMethodToGetterRefactoring(
-              searchEngine, server.getAstProvider(file), element);
+      var resolvedUnit = await server.getResolvedUnit(file);
+      if (resolvedUnit != null) {
+        var node = new NodeLocator(offset).searchWithin(resolvedUnit.unit);
+        var element = server.getElementOfNode(node);
+        if (element != null) {
+          if (element is ExecutableElement) {
+            refactoring = new ConvertMethodToGetterRefactoring(
+                searchEngine, resolvedUnit.session, element);
+          }
         }
       }
     }
     if (kind == RefactoringKind.EXTRACT_LOCAL_VARIABLE) {
-      var analysisResult = await server.getAnalysisResult(file);
-      if (analysisResult != null) {
-        refactoring =
-            new ExtractLocalRefactoring(analysisResult, offset, length);
+      var resolvedUnit = await server.getResolvedUnit(file);
+      if (resolvedUnit != null) {
+        refactoring = new ExtractLocalRefactoring(resolvedUnit, offset, length);
         feedback = new ExtractLocalVariableFeedback(
             <String>[], <int>[], <int>[],
             coveringExpressionOffsets: <int>[],
@@ -969,34 +881,40 @@
       }
     }
     if (kind == RefactoringKind.EXTRACT_METHOD) {
-      var analysisResult = await server.getAnalysisResult(file);
-      if (analysisResult != null) {
-        refactoring = new ExtractMethodRefactoring(searchEngine,
-            server.getAstProvider(file), analysisResult, offset, length);
+      var resolvedUnit = await server.getResolvedUnit(file);
+      if (resolvedUnit != null) {
+        refactoring = new ExtractMethodRefactoring(
+            searchEngine, resolvedUnit, offset, length);
         feedback = new ExtractMethodFeedback(offset, length, '', <String>[],
             false, <RefactoringMethodParameter>[], <int>[], <int>[]);
       }
     }
     if (kind == RefactoringKind.EXTRACT_WIDGET) {
-      var analysisResult = await server.getAnalysisResult(file);
-      if (analysisResult != null) {
+      var resolvedUnit = await server.getResolvedUnit(file);
+      if (resolvedUnit != null) {
         refactoring = new ExtractWidgetRefactoring(
-            searchEngine, analysisResult, offset, length);
+            searchEngine, resolvedUnit, offset, length);
         feedback = new ExtractWidgetFeedback();
       }
     }
     if (kind == RefactoringKind.INLINE_LOCAL_VARIABLE) {
-      var analysisResult = await server.getAnalysisResult(file);
-      if (analysisResult != null) {
+      var resolvedUnit = await server.getResolvedUnit(file);
+      if (resolvedUnit != null) {
         refactoring = new InlineLocalRefactoring(
-            searchEngine, server.getAstProvider(file), analysisResult, offset);
+          searchEngine,
+          resolvedUnit,
+          offset,
+        );
       }
     }
     if (kind == RefactoringKind.INLINE_METHOD) {
-      var analysisResult = await server.getAnalysisResult(file);
-      if (analysisResult != null) {
+      var resolvedUnit = await server.getResolvedUnit(file);
+      if (resolvedUnit != null) {
         refactoring = new InlineMethodRefactoring(
-            searchEngine, server.getAstProvider(file), analysisResult, offset);
+          searchEngine,
+          resolvedUnit,
+          offset,
+        );
       }
     }
     if (kind == RefactoringKind.MOVE_FILE) {
@@ -1009,41 +927,44 @@
 //          server.resourceProvider, searchEngine, context, source, file);
     }
     if (kind == RefactoringKind.RENAME) {
-      AstNode node = await server.getNodeAtOffset(file, offset);
-      Element element = server.getElementOfNode(node);
-      if (node != null && element != null) {
-        int feedbackOffset = node.offset;
-        int feedbackLength = node.length;
+      var resolvedUnit = await server.getResolvedUnit(file);
+      if (resolvedUnit != null) {
+        var node = new NodeLocator(offset).searchWithin(resolvedUnit.unit);
+        var element = server.getElementOfNode(node);
+        if (node != null && element != null) {
+          int feedbackOffset = node.offset;
+          int feedbackLength = node.length;
 
-        if (element is FieldFormalParameterElement) {
-          element = (element as FieldFormalParameterElement).field;
-        }
-
-        // Use the prefix offset/length when renaming an import directive.
-        if (node is ImportDirective && element is ImportElement) {
-          if (node.prefix != null) {
-            feedbackOffset = node.prefix.offset;
-            feedbackLength = node.prefix.length;
-          } else {
-            feedbackOffset = -1;
-            feedbackLength = 0;
+          if (element is FieldFormalParameterElement) {
+            element = (element as FieldFormalParameterElement).field;
           }
-        }
 
-        // Rename the class when on `new` in an instance creation.
-        if (node is InstanceCreationExpression) {
-          InstanceCreationExpression creation = node;
-          var typeIdentifier = creation.constructorName.type.name;
-          element = typeIdentifier.staticElement;
-          feedbackOffset = typeIdentifier.offset;
-          feedbackLength = typeIdentifier.length;
-        }
+          // Use the prefix offset/length when renaming an import directive.
+          if (node is ImportDirective && element is ImportElement) {
+            if (node.prefix != null) {
+              feedbackOffset = node.prefix.offset;
+              feedbackLength = node.prefix.length;
+            } else {
+              feedbackOffset = -1;
+              feedbackLength = 0;
+            }
+          }
 
-        // do create the refactoring
-        refactoring = new RenameRefactoring(
-            refactoringWorkspace, server.getAstProvider(file), element);
-        feedback = new RenameFeedback(
-            feedbackOffset, feedbackLength, 'kind', 'oldName');
+          // Rename the class when on `new` in an instance creation.
+          if (node is InstanceCreationExpression) {
+            InstanceCreationExpression creation = node;
+            var typeIdentifier = creation.constructorName.type.name;
+            element = typeIdentifier.staticElement;
+            feedbackOffset = typeIdentifier.offset;
+            feedbackLength = typeIdentifier.length;
+          }
+
+          // do create the refactoring
+          refactoring = new RenameRefactoring(
+              refactoringWorkspace, resolvedUnit.session, element);
+          feedback = new RenameFeedback(
+              feedbackOffset, feedbackLength, 'kind', 'oldName');
+        }
       }
     }
     if (refactoring == null) {
diff --git a/pkg/analysis_server/lib/src/edit/fix/prefer_int_literals_fix.dart b/pkg/analysis_server/lib/src/edit/fix/prefer_int_literals_fix.dart
index 52dda1f..fa2ba99 100644
--- a/pkg/analysis_server/lib/src/edit/fix/prefer_int_literals_fix.dart
+++ b/pkg/analysis_server/lib/src/edit/fix/prefer_int_literals_fix.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -6,9 +6,9 @@
 import 'package:analysis_server/src/edit/edit_dartfix.dart';
 import 'package:analysis_server/src/services/correction/assist.dart';
 import 'package:analysis_server/src/services/correction/assist_internal.dart';
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/error/error.dart';
 
 class PreferIntLiteralsFix extends LinterFix {
   final literalsToConvert = <DoubleLiteral>[];
@@ -16,11 +16,12 @@
   PreferIntLiteralsFix(EditDartFix dartFix) : super(dartFix);
 
   @override
-  Future<void> applyLocalFixes(AnalysisResult result) async {
+  Future<void> applyLocalFixes(ResolvedUnitResult result) async {
     while (literalsToConvert.isNotEmpty) {
       DoubleLiteral literal = literalsToConvert.removeLast();
       AssistProcessor processor = new AssistProcessor(
-          new EditDartFixAssistContext(dartFix, source, result.unit, literal));
+        new DartAssistContextImpl(result, literal.offset, 0),
+      );
       List<Assist> assists =
           await processor.computeAssist(DartAssistKind.CONVERT_TO_INT_LITERAL);
       final location =
diff --git a/pkg/analysis_server/lib/src/edit/fix/prefer_mixin_fix.dart b/pkg/analysis_server/lib/src/edit/fix/prefer_mixin_fix.dart
index 52f924a..c929ff1 100644
--- a/pkg/analysis_server/lib/src/edit/fix/prefer_mixin_fix.dart
+++ b/pkg/analysis_server/lib/src/edit/fix/prefer_mixin_fix.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -6,10 +6,10 @@
 import 'package:analysis_server/src/edit/edit_dartfix.dart';
 import 'package:analysis_server/src/services/correction/assist.dart';
 import 'package:analysis_server/src/services/correction/assist_internal.dart';
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/error/error.dart';
 
 class PreferMixinFix extends LinterFix {
   final classesToConvert = new Set<Element>();
@@ -17,7 +17,7 @@
   PreferMixinFix(EditDartFix dartFix) : super(dartFix);
 
   @override
-  Future<void> applyLocalFixes(AnalysisResult result) {
+  Future<void> applyLocalFixes(ResolvedUnitResult result) {
     // All fixes applied in [applyRemainingFixes]
     return null;
   }
@@ -30,15 +30,15 @@
   }
 
   Future<void> convertClassToMixin(Element elem) async {
-    AnalysisResult result =
-        await dartFix.server.getAnalysisResult(elem.source?.fullName);
+    ResolvedUnitResult result =
+        await dartFix.server.getResolvedUnit(elem.source?.fullName);
 
     for (CompilationUnitMember declaration in result.unit.declarations) {
       if (declaration is ClassOrMixinDeclaration &&
           declaration.name.name == elem.name) {
         AssistProcessor processor = new AssistProcessor(
-            new EditDartFixAssistContext(
-                dartFix, elem.source, result.unit, declaration.name));
+          new DartAssistContextImpl(result, declaration.name.offset, 0),
+        );
         List<Assist> assists = await processor
             .computeAssist(DartAssistKind.CONVERT_CLASS_TO_MIXIN);
         final location =
diff --git a/pkg/analysis_server/lib/src/flutter/flutter_correction.dart b/pkg/analysis_server/lib/src/flutter/flutter_correction.dart
index 459baf7..34e2864 100644
--- a/pkg/analysis_server/lib/src/flutter/flutter_correction.dart
+++ b/pkg/analysis_server/lib/src/flutter/flutter_correction.dart
@@ -5,46 +5,34 @@
 import 'dart:async';
 
 import 'package:analysis_server/src/services/correction/util.dart';
-import 'package:analyzer/dart/analysis/session.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
-import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart' hide Element;
 import 'package:analyzer_plugin/utilities/change_builder/change_builder_dart.dart';
 import 'package:meta/meta.dart';
 
 class FlutterCorrections {
-  final String file;
-  final String fileContent;
-
+  final ResolvedUnitResult resolveResult;
   final int selectionOffset;
   final int selectionLength;
   final int selectionEnd;
-  final SourceRange selectionRange;
 
-  final AnalysisSession session;
-  final CompilationUnit unit;
+  final CorrectionUtils utils;
 
   AstNode node;
-  CorrectionUtils utils;
 
   FlutterCorrections(
-      {@required this.file,
-      @required this.fileContent,
+      {@required this.resolveResult,
       @required this.selectionOffset,
-      @required this.selectionLength,
-      @required this.session,
-      @required this.unit})
-      : assert(file != null),
-        assert(fileContent != null),
+      @required this.selectionLength})
+      : assert(resolveResult != null),
         assert(selectionOffset != null),
         assert(selectionLength != null),
-        assert(session != null),
-        assert(unit != null),
         selectionEnd = selectionOffset + selectionLength,
-        selectionRange = new SourceRange(selectionOffset, selectionLength) {
-    node = new NodeLocator(selectionOffset, selectionEnd).searchWithin(unit);
-    utils = new CorrectionUtils(unit, buffer: fileContent);
+        utils = new CorrectionUtils(resolveResult) {
+    node = new NodeLocator(selectionOffset, selectionEnd)
+        .searchWithin(resolveResult.unit);
   }
 
   /**
@@ -59,8 +47,8 @@
     if (node is ClassDeclaration) {
       var className = node.name.name;
       var location = utils.prepareNewConstructorLocation(node);
-      var changeBuilder = new DartChangeBuilder(session);
-      await changeBuilder.addFileEdit(file, (builder) {
+      var changeBuilder = new DartChangeBuilder(resolveResult.session);
+      await changeBuilder.addFileEdit(resolveResult.path, (builder) {
         builder.addInsertion(location.offset, (builder) {
           builder.write(location.prefix);
 
diff --git a/pkg/analysis_server/lib/src/flutter/flutter_domain.dart b/pkg/analysis_server/lib/src/flutter/flutter_domain.dart
index 45698c4..7bc3713 100644
--- a/pkg/analysis_server/lib/src/flutter/flutter_domain.dart
+++ b/pkg/analysis_server/lib/src/flutter/flutter_domain.dart
@@ -33,15 +33,13 @@
     String file = params.file;
     int offset = params.offset;
 
-    ResolveResult result = await server.getAnalysisResult(file);
+    ResolvedUnitResult result = await server.getResolvedUnit(file);
     if (result != null) {
       var corrections = new FlutterCorrections(
-          file: file,
-          fileContent: result.content,
-          selectionOffset: offset,
-          selectionLength: 0,
-          session: result.session,
-          unit: result.unit);
+        resolveResult: result,
+        selectionOffset: offset,
+        selectionLength: 0,
+      );
       SourceChange change = await corrections.addForDesignTimeConstructor();
       if (change != null) {
         server.sendResponse(
diff --git a/pkg/analysis_server/lib/src/flutter/flutter_notifications.dart b/pkg/analysis_server/lib/src/flutter/flutter_notifications.dart
index a468fd4..b387156 100644
--- a/pkg/analysis_server/lib/src/flutter/flutter_notifications.dart
+++ b/pkg/analysis_server/lib/src/flutter/flutter_notifications.dart
@@ -6,13 +6,19 @@
 import 'package:analysis_server/src/flutter/flutter_outline_computer.dart';
 import 'package:analysis_server/src/protocol_server.dart' as protocol;
 import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/source.dart';
 
-void sendFlutterNotificationOutline(AnalysisServer server, String file,
-    String content, LineInfo lineInfo, CompilationUnit dartUnit) {
+void sendFlutterNotificationOutline(
+    AnalysisServer server,
+    String file,
+    String content,
+    LineInfo lineInfo,
+    CompilationUnit dartUnit,
+    TypeProvider typeProvider) {
   _sendNotification(server, () {
-    var computer =
-        new FlutterOutlineComputer(file, content, lineInfo, dartUnit);
+    var computer = new FlutterOutlineComputer(
+        file, content, lineInfo, dartUnit, typeProvider);
     protocol.FlutterOutline outline = computer.compute();
     // send notification
     var params = new protocol.FlutterOutlineParams(file, outline,
diff --git a/pkg/analysis_server/lib/src/flutter/flutter_outline_computer.dart b/pkg/analysis_server/lib/src/flutter/flutter_outline_computer.dart
index f1d5470..5d503b4 100644
--- a/pkg/analysis_server/lib/src/flutter/flutter_outline_computer.dart
+++ b/pkg/analysis_server/lib/src/flutter/flutter_outline_computer.dart
@@ -45,8 +45,8 @@
   final List<protocol.SourceEdit> instrumentationEdits = [];
   String instrumentedCode;
 
-  FlutterOutlineComputer(this.file, this.content, this.lineInfo, this.unit)
-      : typeProvider = unit.declaredElement.context.typeProvider;
+  FlutterOutlineComputer(
+      this.file, this.content, this.lineInfo, this.unit, this.typeProvider);
 
   protocol.FlutterOutline compute() {
     protocol.Outline dartOutline = new DartUnitOutlineComputer(
diff --git a/pkg/analysis_server/lib/src/lsp/channel/lsp_byte_stream_channel.dart b/pkg/analysis_server/lib/src/lsp/channel/lsp_byte_stream_channel.dart
new file mode 100644
index 0000000..7861d0d
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/channel/lsp_byte_stream_channel.dart
@@ -0,0 +1,140 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/analysis_server.dart';
+import 'package:analysis_server/src/lsp/channel/lsp_channel.dart';
+import 'package:analysis_server/src/lsp/lsp_packet_transformer.dart';
+import 'package:analyzer/instrumentation/instrumentation.dart';
+
+/**
+ * Instances of the class [LspByteStreamServerChannel] implement an
+ * [LspServerCommunicationChannel] that uses a stream and a sink (typically,
+ * standard input and standard output) to communicate with clients.
+ */
+class LspByteStreamServerChannel implements LspServerCommunicationChannel {
+  final Stream _input;
+
+  final IOSink _output;
+
+  final InstrumentationService _instrumentationService;
+
+  /**
+   * Completer that will be signalled when the input stream is closed.
+   */
+  final Completer _closed = new Completer();
+
+  /**
+   * True if [close] has been called.
+   */
+  bool _closeRequested = false;
+
+  LspByteStreamServerChannel(
+      this._input, this._output, this._instrumentationService);
+
+  /**
+   * Future that will be completed when the input stream is closed.
+   */
+  Future get closed {
+    return _closed.future;
+  }
+
+  @override
+  void close() {
+    if (!_closeRequested) {
+      _closeRequested = true;
+      assert(!_closed.isCompleted);
+      _closed.complete();
+    }
+  }
+
+  @override
+  void listen(void onMessage(IncomingMessage message),
+      {Function onError, void onDone()}) {
+    _input.transform(new LspPacketTransformer()).listen(
+      (String data) => _readMessage(data, onMessage),
+      onError: onError,
+      onDone: () {
+        close();
+        onDone();
+      },
+    );
+  }
+
+  @override
+  void sendNotification(NotificationMessage notification) =>
+      _sendLsp(notification.toJson());
+
+  @override
+  void sendResponse(ResponseMessage response) => _sendLsp(response.toJson());
+
+  /**
+   * Read a request from the given [data] and use the given function to handle
+   * the message.
+   */
+  void _readMessage(String data, void onMessage(IncomingMessage request)) {
+    // Ignore any further requests after the communication channel is closed.
+    if (_closed.isCompleted) {
+      return;
+    }
+    ServerPerformanceStatistics.serverChannel.makeCurrentWhile(() {
+      _instrumentationService.logRequest(data);
+      final Map<String, Object> json = jsonDecode(data);
+      if (RequestMessage.canParse(json)) {
+        onMessage(RequestMessage.fromJson(json));
+      } else if (NotificationMessage.canParse(json)) {
+        onMessage(NotificationMessage.fromJson(json));
+      } else {
+        _sendParseError();
+      }
+    });
+  }
+
+  /// Sends a message prefixed with the required LSP headers.
+  void _sendLsp(Map<String, Object> json) {
+    // Don't send any further responses after the communication channel is
+    // closed.
+    if (_closeRequested) {
+      return;
+    }
+    ServerPerformanceStatistics.serverChannel.makeCurrentWhile(() {
+      final jsonEncodedBody = jsonEncode(json);
+      final utf8EncodedBody = utf8.encode(jsonEncodedBody);
+      final header = 'Content-Length: ${utf8EncodedBody.length}\r\n'
+          'Content-Type: application/vscode-jsonrpc; charset=utf-8\r\n\r\n';
+      final asciiEncodedHeader = ascii.encode(header);
+
+      // Header is always ascii, body is always utf8!
+      _write(asciiEncodedHeader);
+      _write(utf8EncodedBody);
+
+      _instrumentationService.logResponse(jsonEncodedBody);
+    });
+  }
+
+  void _sendParseError() {
+    final error = new ResponseMessage(
+        null,
+        null,
+        new ResponseError(
+            ErrorCodes.ParseError, 'Unable to parse message', null),
+        jsonRpcVersion);
+    sendResponse(error);
+  }
+
+  /**
+   * Send [bytes] to [_output].
+   */
+  void _write(List<int> bytes) {
+    runZoned(
+      () => _output.add(bytes),
+      onError: (e) => close(),
+    );
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/channel/lsp_channel.dart b/pkg/analysis_server/lib/src/lsp/channel/lsp_channel.dart
new file mode 100644
index 0000000..dd23b812
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/channel/lsp_channel.dart
@@ -0,0 +1,40 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+
+/**
+ * The abstract class [LspServerCommunicationChannel] defines the behavior of
+ * objects that allow an [LspAnalysisServer] to receive [RequestMessage]s and
+ * [NotificationMessage]s and to return both [ResponseMessage]s and
+ * [NotificationMessage]s.
+ */
+abstract class LspServerCommunicationChannel {
+  /**
+   * Close the communication channel.
+   */
+  void close();
+
+  /**
+   * Listen to the channel for messages. If a message is received, invoke the
+   * [onMessage] function. If an error is encountered while trying to read from
+   * the socket, invoke the [onError] function. If the socket is closed by the
+   * client, invoke the [onDone] function.
+   * Only one listener is allowed per channel.
+   */
+  void listen(void onMessage(IncomingMessage message),
+      {Function onError, void onDone()});
+
+  /**
+   * Send the given [notification] to the client.
+   */
+  void sendNotification(NotificationMessage notification);
+
+  /**
+   * Send the given [response] to the client.
+   */
+  void sendResponse(ResponseMessage response);
+}
diff --git a/pkg/analysis_server/lib/src/lsp/dartdoc.dart b/pkg/analysis_server/lib/src/lsp/dartdoc.dart
new file mode 100644
index 0000000..dd2de9e
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/dartdoc.dart
@@ -0,0 +1,24 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+final _dartdocCodeBlockSections = new RegExp(r'(```\w+) +\w+');
+final _dartdocDirectives =
+    new RegExp(r'(\n *{@.*?}$)|(^{@.*?}\n)', multiLine: true);
+
+String cleanDartdoc(String doc) {
+  if (doc == null) {
+    return null;
+  }
+  // Remove any dartdoc directives like {@template xxx}
+  doc = doc.replaceAll(_dartdocDirectives, '');
+
+  // Remove any code block section names like ```dart preamble that Flutter
+  // docs contain.
+  doc = doc.replaceAllMapped(
+    _dartdocCodeBlockSections,
+    (match) => match.group(1),
+  );
+
+  return doc;
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_completion.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_completion.dart
new file mode 100644
index 0000000..6d7d0be
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_completion.dart
@@ -0,0 +1,100 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+import 'dart:collection';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+import 'package:analysis_server/src/lsp/mapping.dart';
+import 'package:analysis_server/src/provisional/completion/completion_core.dart';
+import 'package:analysis_server/src/services/completion/completion_core.dart';
+import 'package:analysis_server/src/services/completion/completion_performance.dart';
+import 'package:analysis_server/src/services/completion/dart/completion_manager.dart';
+import 'package:analyzer/dart/analysis/results.dart';
+
+// If the client does not provide capabilities.completion.completionItemKind.valueSet
+// then we must never send a kind that's not in this list.
+final defaultSupportedCompletionKinds = new HashSet<CompletionItemKind>.of([
+  CompletionItemKind.Text,
+  CompletionItemKind.Method,
+  CompletionItemKind.Function,
+  CompletionItemKind.Constructor,
+  CompletionItemKind.Field,
+  CompletionItemKind.Variable,
+  CompletionItemKind.Class,
+  CompletionItemKind.Interface,
+  CompletionItemKind.Module,
+  CompletionItemKind.Property,
+  CompletionItemKind.Unit,
+  CompletionItemKind.Value,
+  CompletionItemKind.Enum,
+  CompletionItemKind.Keyword,
+  CompletionItemKind.Snippet,
+  CompletionItemKind.Color,
+  CompletionItemKind.File,
+  CompletionItemKind.Reference,
+]);
+
+class CompletionHandler
+    extends MessageHandler<CompletionParams, List<CompletionItem>> {
+  CompletionHandler(LspAnalysisServer server) : super(server);
+  Method get handlesMessage => Method.textDocument_completion;
+
+  @override
+  CompletionParams convertParams(Map<String, dynamic> json) =>
+      CompletionParams.fromJson(json);
+
+  Future<ErrorOr<List<CompletionItem>>> handle(CompletionParams params) async {
+    final completionCapabilities =
+        server?.clientCapabilities?.textDocument?.completion;
+
+    final clientSupportedCompletionKinds =
+        completionCapabilities?.completionItemKind?.valueSet != null
+            ? new HashSet<CompletionItemKind>.of(
+                completionCapabilities.completionItemKind.valueSet)
+            : defaultSupportedCompletionKinds;
+
+    final pos = params.position;
+    final path = pathOf(params.textDocument);
+    final unit = await path.mapResult(requireUnit);
+    final offset = await unit.mapResult((unit) => toOffset(unit.lineInfo, pos));
+    return offset.mapResult((offset) => _getItems(
+          completionCapabilities,
+          clientSupportedCompletionKinds,
+          unit.result,
+          offset,
+        ));
+  }
+
+  Future<ErrorOr<List<CompletionItem>>> _getItems(
+    TextDocumentClientCapabilitiesCompletion completionCapabilities,
+    HashSet<CompletionItemKind> clientSupportedCompletionKinds,
+    ResolvedUnitResult unit,
+    int offset,
+  ) async {
+    final performance = new CompletionPerformance();
+    final completionRequest =
+        new CompletionRequestImpl(unit, offset, performance);
+
+    try {
+      CompletionContributor contributor = new DartCompletionManager();
+      final items = await contributor.computeSuggestions(completionRequest);
+      return success(items
+          .map((item) => toCompletionItem(
+                completionCapabilities,
+                clientSupportedCompletionKinds,
+                unit.lineInfo,
+                item,
+                completionRequest.replacementOffset,
+                completionRequest.replacementLength,
+              ))
+          .toList());
+    } on AbortCompletion {
+      return success([]);
+    }
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_definition.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_definition.dart
new file mode 100644
index 0000000..f06f364
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_definition.dart
@@ -0,0 +1,46 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/domains/analysis/navigation_dart.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+import 'package:analysis_server/src/lsp/mapping.dart';
+import 'package:analysis_server/src/protocol_server.dart' show NavigationTarget;
+import 'package:analyzer_plugin/src/utilities/navigation/navigation.dart';
+
+class DefinitionHandler
+    extends MessageHandler<TextDocumentPositionParams, List<Location>> {
+  DefinitionHandler(LspAnalysisServer server) : super(server);
+  Method get handlesMessage => Method.textDocument_definition;
+
+  @override
+  TextDocumentPositionParams convertParams(Map<String, dynamic> json) =>
+      TextDocumentPositionParams.fromJson(json);
+
+  Future<ErrorOr<List<Location>>> handle(
+      TextDocumentPositionParams params) async {
+    final pos = params.position;
+    final path = pathOf(params.textDocument);
+    final unit = await path.mapResult(requireUnit);
+    final offset = await unit.mapResult((unit) => toOffset(unit.lineInfo, pos));
+
+    return offset.mapResult((offset) {
+      NavigationCollectorImpl collector = new NavigationCollectorImpl();
+      computeDartNavigation(
+          server.resourceProvider, collector, unit.result.unit, offset, 0);
+
+      Location toLocation(NavigationTarget target) {
+        final targetFilePath = collector.files[target.fileIndex];
+        final lineInfo = server.getLineInfo(targetFilePath);
+        return navigationTargetToLocation(targetFilePath, target, lineInfo);
+      }
+
+      return success(convert(collector.targets, toLocation).toList());
+    });
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_document_symbols.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_document_symbols.dart
new file mode 100644
index 0000000..f805495
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_document_symbols.dart
@@ -0,0 +1,157 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+import 'dart:collection';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/computer/computer_outline.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+import 'package:analysis_server/src/lsp/mapping.dart';
+import 'package:analysis_server/src/protocol_server.dart' show Outline;
+import 'package:analyzer/dart/analysis/results.dart';
+import 'package:analyzer/source/line_info.dart';
+
+// If the client does not provide capabilities.documentSymbol.symbolKind.valueSet
+// then we must never send a kind that's not in this list.
+final defaultSupportedSymbolKinds = new HashSet<SymbolKind>.of([
+  SymbolKind.File,
+  SymbolKind.Module,
+  SymbolKind.Namespace,
+  SymbolKind.Package,
+  SymbolKind.Class,
+  SymbolKind.Method,
+  SymbolKind.Property,
+  SymbolKind.Field,
+  SymbolKind.Constructor,
+  SymbolKind.Enum,
+  SymbolKind.Interface,
+  SymbolKind.Function,
+  SymbolKind.Variable,
+  SymbolKind.Constant,
+  SymbolKind.Str,
+  SymbolKind.Number,
+  SymbolKind.Boolean,
+  SymbolKind.Array,
+]);
+
+class DocumentSymbolHandler extends MessageHandler<DocumentSymbolParams,
+    Either2<List<DocumentSymbol>, List<SymbolInformation>>> {
+  DocumentSymbolHandler(LspAnalysisServer server) : super(server);
+  Method get handlesMessage => Method.textDocument_documentSymbol;
+
+  @override
+  DocumentSymbolParams convertParams(Map<String, dynamic> json) =>
+      DocumentSymbolParams.fromJson(json);
+
+  Future<ErrorOr<Either2<List<DocumentSymbol>, List<SymbolInformation>>>>
+      handle(DocumentSymbolParams params) async {
+    final symbolCapabilities =
+        server?.clientCapabilities?.textDocument?.documentSymbol;
+
+    final clientSupportedSymbolKinds =
+        symbolCapabilities?.symbolKind?.valueSet != null
+            ? new HashSet<SymbolKind>.of(symbolCapabilities.symbolKind.valueSet)
+            : defaultSupportedSymbolKinds;
+
+    final clientSupportsDocumentSymbol =
+        symbolCapabilities?.hierarchicalDocumentSymbolSupport ?? false;
+
+    final path = pathOf(params.textDocument);
+    final unit = await path.mapResult(requireUnit);
+    return unit.mapResult((unit) => _getSymbols(clientSupportedSymbolKinds,
+        clientSupportsDocumentSymbol, path.result, unit));
+  }
+
+  DocumentSymbol _asDocumentSymbol(
+    HashSet<SymbolKind> clientSupportedSymbolKinds,
+    LineInfo lineInfo,
+    Outline outline,
+  ) {
+    return new DocumentSymbol(
+      outline.element.name,
+      outline.element.parameters,
+      elementKindToSymbolKind(clientSupportedSymbolKinds, outline.element.kind),
+      outline.element.isDeprecated,
+      toRange(lineInfo, outline.codeOffset, outline.codeLength),
+      toRange(lineInfo, outline.element.location.offset,
+          outline.element.location.length),
+      outline.children
+          ?.map((child) =>
+              _asDocumentSymbol(clientSupportedSymbolKinds, lineInfo, child))
+          ?.toList(),
+    );
+  }
+
+  SymbolInformation _asSymbolInformation(
+    String containerName,
+    HashSet<SymbolKind> clientSupportedSymbolKinds,
+    String documentUri,
+    LineInfo lineInfo,
+    Outline outline,
+  ) {
+    return new SymbolInformation(
+      outline.element.name,
+      elementKindToSymbolKind(clientSupportedSymbolKinds, outline.element.kind),
+      outline.element.isDeprecated,
+      new Location(
+        documentUri,
+        toRange(lineInfo, outline.element.location.offset,
+            outline.element.location.length),
+      ),
+      containerName,
+    );
+  }
+
+  ErrorOr<Either2<List<DocumentSymbol>, List<SymbolInformation>>> _getSymbols(
+    HashSet<SymbolKind> clientSupportedSymbolKinds,
+    bool clientSupportsDocumentSymbol,
+    String path,
+    ResolvedUnitResult unit,
+  ) {
+    final computer =
+        new DartUnitOutlineComputer(path, unit.lineInfo, unit.unit);
+    final outline = computer.compute();
+
+    if (clientSupportsDocumentSymbol) {
+      // Return a tree of DocumentSymbol only if the client shows explicit support
+      // for it.
+      return success(
+        Either2<List<DocumentSymbol>, List<SymbolInformation>>.t1(
+          outline?.children
+              ?.map((child) => _asDocumentSymbol(
+                  clientSupportedSymbolKinds, unit.lineInfo, child))
+              ?.toList(),
+        ),
+      );
+    } else {
+      // Otherwise, we need to use the original flat SymbolInformation.
+      final allSymbols = <SymbolInformation>[];
+      final documentUri = new Uri.file(path).toString();
+
+      // Adds a symbol and it's children recursively, supplying the parent
+      // name as required by SymbolInformation.
+      addSymbol(Outline outline, {String parentName}) {
+        allSymbols.add(_asSymbolInformation(
+          parentName,
+          clientSupportedSymbolKinds,
+          documentUri,
+          unit.lineInfo,
+          outline,
+        ));
+        outline.children?.forEach(
+          (c) => addSymbol(c, parentName: outline.element.name),
+        );
+      }
+
+      outline?.children?.forEach(addSymbol);
+
+      return success(
+        Either2<List<DocumentSymbol>, List<SymbolInformation>>.t2(allSymbols),
+      );
+    }
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_exit.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_exit.dart
new file mode 100644
index 0000000..f2b3579
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_exit.dart
@@ -0,0 +1,24 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+
+class ExitMessageHandler extends MessageHandler<void, void> {
+  ExitMessageHandler(LspAnalysisServer server) : super(server);
+  Method get handlesMessage => Method.exit;
+
+  @override
+  void convertParams(Map<String, dynamic> json) => null;
+
+  @override
+  Future<ErrorOr<void>> handle(void _) async {
+    await server.shutdown();
+    return success();
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_format_on_type.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_format_on_type.dart
new file mode 100644
index 0000000..f704f06
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_format_on_type.dart
@@ -0,0 +1,37 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+import 'package:analysis_server/src/lsp/mapping.dart';
+import 'package:analysis_server/src/lsp/source_edits.dart';
+import 'package:analyzer/dart/analysis/results.dart';
+
+class FormatOnTypeHandler
+    extends MessageHandler<DocumentOnTypeFormattingParams, List<TextEdit>> {
+  FormatOnTypeHandler(LspAnalysisServer server) : super(server);
+  Method get handlesMessage => Method.textDocument_onTypeFormatting;
+
+  @override
+  DocumentOnTypeFormattingParams convertParams(Map<String, dynamic> json) =>
+      DocumentOnTypeFormattingParams.fromJson(json);
+
+  ErrorOr<List<TextEdit>> formatFile(String path, ResolvedUnitResult unit) {
+    final unformattedSource = server.fileContentOverlay[path] ??
+        server.resourceProvider.getFile(path).readAsStringSync();
+
+    return success(generateEditsForFormatting(unformattedSource));
+  }
+
+  Future<ErrorOr<List<TextEdit>>> handle(
+      DocumentOnTypeFormattingParams params) async {
+    final path = pathOf(params.textDocument);
+    final unit = await path.mapResult(requireUnit);
+    return unit.mapResult((unit) => formatFile(path.result, unit));
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_formatting.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_formatting.dart
new file mode 100644
index 0000000..a0078c0
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_formatting.dart
@@ -0,0 +1,37 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+import 'package:analysis_server/src/lsp/mapping.dart';
+import 'package:analysis_server/src/lsp/source_edits.dart';
+import 'package:analyzer/dart/analysis/results.dart';
+
+class FormattingHandler
+    extends MessageHandler<DocumentFormattingParams, List<TextEdit>> {
+  FormattingHandler(LspAnalysisServer server) : super(server);
+  Method get handlesMessage => Method.textDocument_formatting;
+
+  @override
+  DocumentFormattingParams convertParams(Map<String, dynamic> json) =>
+      DocumentFormattingParams.fromJson(json);
+
+  ErrorOr<List<TextEdit>> formatFile(String path, ResolvedUnitResult unit) {
+    final unformattedSource = server.fileContentOverlay[path] ??
+        server.resourceProvider.getFile(path).readAsStringSync();
+
+    return success(generateEditsForFormatting(unformattedSource));
+  }
+
+  Future<ErrorOr<List<TextEdit>>> handle(
+      DocumentFormattingParams params) async {
+    final path = pathOf(params.textDocument);
+    final unit = await path.mapResult(requireUnit);
+    return unit.mapResult((unit) => formatFile(path.result, unit));
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_hover.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_hover.dart
new file mode 100644
index 0000000..682bbdb
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_hover.dart
@@ -0,0 +1,84 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/protocol/protocol_generated.dart';
+import 'package:analysis_server/src/computer/computer_hover.dart';
+import 'package:analysis_server/src/lsp/dartdoc.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+import 'package:analysis_server/src/lsp/mapping.dart';
+import 'package:analyzer/dart/analysis/results.dart';
+import 'package:analyzer/source/line_info.dart';
+
+class HoverHandler extends MessageHandler<TextDocumentPositionParams, Hover> {
+  HoverHandler(LspAnalysisServer server) : super(server);
+  Method get handlesMessage => Method.textDocument_hover;
+
+  @override
+  TextDocumentPositionParams convertParams(Map<String, dynamic> json) =>
+      TextDocumentPositionParams.fromJson(json);
+
+  Future<ErrorOr<Hover>> handle(TextDocumentPositionParams params) async {
+    final pos = params.position;
+    final path = pathOf(params.textDocument);
+    final unit = await path.mapResult(requireUnit);
+    final offset = await unit.mapResult((unit) => toOffset(unit.lineInfo, pos));
+    return offset.mapResult((offset) => _getHover(unit.result, offset));
+  }
+
+  Hover toHover(LineInfo lineInfo, HoverInformation hover) {
+    if (hover == null) {
+      return null;
+    }
+
+    // Import prefix tooltips are not useful currently.
+    // https://github.com/dart-lang/sdk/issues/32735
+    if (hover.elementKind == 'import prefix') {
+      return null;
+    }
+
+    final content = new StringBuffer();
+
+    // Description.
+    if (hover.elementDescription != null) {
+      content.writeln('```dart');
+      if (hover.isDeprecated) {
+        content.write('(deprecated) ');
+      }
+      content..writeln(hover.elementDescription)..writeln('```')..writeln();
+    }
+
+    // Source library.
+    if (hover.containingLibraryName != null &&
+        hover.containingLibraryName.isNotEmpty) {
+      content..writeln('*${hover.containingLibraryName}*')..writeln();
+    } else if (hover.containingLibraryPath != null) {
+      // TODO(dantup): Support displaying the package name (probably by adding
+      // containingPackageName to the main hover?) once the analyzer work to
+      // support this (inc Bazel/Gn) is done.
+      // content..writeln('*${hover.containingPackageName}*')..writeln();
+    }
+
+    // Doc comments.
+    if (hover.dartdoc != null) {
+      content.writeln(cleanDartdoc(hover.dartdoc));
+    }
+
+    final formats =
+        server?.clientCapabilities?.textDocument?.hover?.contentFormat;
+    return new Hover(
+      asStringOrMarkupContent(formats, content.toString().trimRight()),
+      toRange(lineInfo, hover.offset, hover.length),
+    );
+  }
+
+  ErrorOr<Hover> _getHover(ResolvedUnitResult unit, int offset) {
+    final hover = new DartUnitHoverComputer(unit.unit, offset).compute();
+    return success(toHover(unit.lineInfo, hover));
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_initialize.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_initialize.dart
new file mode 100644
index 0000000..9c4a555
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_initialize.dart
@@ -0,0 +1,84 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_states.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+
+class InitializeMessageHandler
+    extends MessageHandler<InitializeParams, InitializeResult> {
+  InitializeMessageHandler(LspAnalysisServer server) : super(server);
+
+  Method get handlesMessage => Method.initialize;
+
+  @override
+  InitializeParams convertParams(Map<String, dynamic> json) =>
+      InitializeParams.fromJson(json);
+
+  ErrorOr<InitializeResult> handle(InitializeParams params) {
+    final openWorkspacePaths = <String>[];
+
+    if (params.workspaceFolders != null) {
+      params.workspaceFolders.forEach((wf) {
+        openWorkspacePaths.add(Uri.parse(wf.uri).toFilePath());
+      });
+    }
+    if (params.rootUri != null) {
+      openWorkspacePaths.add(Uri.parse(params.rootUri).toFilePath());
+      // ignore: deprecated_member_use
+    } else if (params.rootPath != null) {
+      openWorkspacePaths.add(params.rootUri);
+    }
+
+    server.setClientCapabilities(params.capabilities);
+    server.messageHandler =
+        new InitializingStateMessageHandler(server, openWorkspacePaths);
+
+    return success(new InitializeResult(new ServerCapabilities(
+        Either2<TextDocumentSyncOptions, num>.t1(new TextDocumentSyncOptions(
+          true,
+          TextDocumentSyncKind.Incremental,
+          false,
+          false,
+          null,
+        )),
+        true, // hoverProvider
+        new CompletionOptions(
+          false,
+          // Set the characters that will cause the editor to automatically
+          // trigger completion.
+          // TODO(dantup): This is quite eager and may need filtering in the
+          // completion handler.
+          // See https://github.com/Dart-Code/Dart-Code/blob/c616c93c87972713454eb0518f97c0278201a99a/src/providers/dart_completion_item_provider.ts#L36
+          r'''.: =(${'"/\'''.split(''),
+        ),
+        new SignatureHelpOptions(
+          // TODO(dantup): Signature help triggering is even more sensitive to
+          // bad chars, so we'll need to implement the logic described here:
+          // https://github.com/dart-lang/sdk/issues/34241
+          [],
+        ),
+        true, // definitionProvider
+        null,
+        null,
+        true, // referencesProvider
+        null,
+        true, // documentSymbolProvider
+        null,
+        null,
+        null,
+        true, // documentFormattingProvider
+        false, // documentRangeFormattingProvider
+        new DocumentOnTypeFormattingOptions('}', [';']),
+        null,
+        null,
+        null,
+        null,
+        null,
+        null,
+        null)));
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_initialized.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_initialized.dart
new file mode 100644
index 0000000..8201ae8
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_initialized.dart
@@ -0,0 +1,28 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_states.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+
+class IntializedMessageHandler extends MessageHandler<InitializedParams, void> {
+  final List<String> openWorkspacePaths;
+  IntializedMessageHandler(LspAnalysisServer server, this.openWorkspacePaths)
+      : super(server);
+  Method get handlesMessage => Method.initialized;
+
+  @override
+  InitializedParams convertParams(Map<String, dynamic> json) =>
+      InitializedParams.fromJson(json);
+
+  ErrorOr<void> handle(InitializedParams params) {
+    server.messageHandler = new InitializedStateMessageHandler(server);
+
+    server.setAnalysisRoots(openWorkspacePaths, [], {});
+
+    return success();
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_references.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_references.dart
new file mode 100644
index 0000000..ec5dc37
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_references.dart
@@ -0,0 +1,84 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/domains/analysis/navigation_dart.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+import 'package:analysis_server/src/lsp/mapping.dart';
+import 'package:analysis_server/src/protocol_server.dart' show SearchResult;
+import 'package:analysis_server/src/protocol_server.dart' show NavigationTarget;
+import 'package:analysis_server/src/search/element_references.dart';
+import 'package:analyzer/dart/analysis/results.dart';
+import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer_plugin/src/utilities/navigation/navigation.dart';
+
+class ReferencesHandler
+    extends MessageHandler<ReferenceParams, List<Location>> {
+  ReferencesHandler(LspAnalysisServer server) : super(server);
+  Method get handlesMessage => Method.textDocument_references;
+
+  @override
+  ReferenceParams convertParams(Map<String, dynamic> json) =>
+      ReferenceParams.fromJson(json);
+
+  @override
+  Future<ErrorOr<List<Location>>> handle(ReferenceParams params) async {
+    final pos = params.position;
+    final path = pathOf(params.textDocument);
+    final unit = await path.mapResult(requireUnit);
+    final offset = await unit.mapResult((unit) => toOffset(unit.lineInfo, pos));
+    return offset.mapResult(
+        (offset) => _getRefererences(path.result, offset, params, unit.result));
+  }
+
+  List<Location> _getDeclarations(CompilationUnit unit, int offset) {
+    final collector = new NavigationCollectorImpl();
+    computeDartNavigation(server.resourceProvider, collector, unit, offset, 0);
+
+    return convert(collector.targets, (NavigationTarget target) {
+      final targetFilePath = collector.files[target.fileIndex];
+      final lineInfo = server.getLineInfo(targetFilePath);
+      return navigationTargetToLocation(targetFilePath, target, lineInfo);
+    }).toList();
+  }
+
+  Future<ErrorOr<List<Location>>> _getRefererences(String path, int offset,
+      ReferenceParams params, ResolvedUnitResult unit) async {
+    Element element = await server.getElementAtOffset(path, offset);
+    if (element is ImportElement) {
+      element = (element as ImportElement).prefix;
+    }
+    if (element is FieldFormalParameterElement) {
+      element = (element as FieldFormalParameterElement).field;
+    }
+    if (element is PropertyAccessorElement) {
+      element = (element as PropertyAccessorElement).variable;
+    }
+    if (element == null) {
+      return success();
+    }
+
+    final computer = new ElementReferencesComputer(server.searchEngine);
+    final results = await computer.compute(element, false);
+
+    Location toLocation(SearchResult result) {
+      final lineInfo = server.getLineInfo(result.location.file);
+      return searchResultToLocation(result, lineInfo);
+    }
+
+    final referenceResults = convert(results, toLocation).toList();
+
+    if (params.context?.includeDeclaration == true) {
+      // Also include the definition for the symbol at this location.
+      referenceResults.addAll(_getDeclarations(unit.unit, offset));
+    }
+
+    return success(referenceResults);
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_reject.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_reject.dart
new file mode 100644
index 0000000..8cd06e5
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_reject.dart
@@ -0,0 +1,27 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+
+/// A [MessageHandler] that rejects specific tpyes of messages with a given
+/// error code/message.
+class RejectMessageHandler extends MessageHandler<Object, void> {
+  final Method handlesMessage;
+  final ErrorCodes errorCode;
+  final String errorMessage;
+  RejectMessageHandler(LspAnalysisServer server, this.handlesMessage,
+      this.errorCode, this.errorMessage)
+      : super(server);
+
+  @override
+  void convertParams(Map<String, dynamic> json) => null;
+
+  @override
+  ErrorOr<void> handle(void _) {
+    return error(errorCode, errorMessage, null);
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_shutdown.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_shutdown.dart
new file mode 100644
index 0000000..82e50f6
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_shutdown.dart
@@ -0,0 +1,23 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+
+class ShutdownMessageHandler extends MessageHandler<void, void> {
+  ShutdownMessageHandler(LspAnalysisServer server) : super(server);
+  Method get handlesMessage => Method.shutdown;
+
+  @override
+  void convertParams(Map<String, dynamic> json) => null;
+
+  @override
+  ErrorOr<void> handle(void _) {
+    // We can clean up and shut down here, but we cannot terminate the server
+    // because that must be done after the exit notification.
+    return success();
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_signature_help.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_signature_help.dart
new file mode 100644
index 0000000..c5e0caf
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_signature_help.dart
@@ -0,0 +1,44 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/computer/computer_signature.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+import 'package:analysis_server/src/lsp/mapping.dart';
+
+class SignatureHelpHandler
+    extends MessageHandler<TextDocumentPositionParams, SignatureHelp> {
+  SignatureHelpHandler(LspAnalysisServer server) : super(server);
+  Method get handlesMessage => Method.textDocument_signatureHelp;
+
+  @override
+  TextDocumentPositionParams convertParams(Map<String, dynamic> json) =>
+      TextDocumentPositionParams.fromJson(json);
+
+  Future<ErrorOr<SignatureHelp>> handle(
+      TextDocumentPositionParams params) async {
+    final pos = params.position;
+    final path = pathOf(params.textDocument);
+    final unit = await path.mapResult(requireUnit);
+    final offset = await unit.mapResult((unit) => toOffset(unit.lineInfo, pos));
+
+    return offset.mapResult((offset) {
+      final computer = new DartUnitSignatureComputer(unit.result.unit, offset);
+      if (!computer.offsetIsValid) {
+        return success(); // No error, just no valid hover.
+      }
+      final signature = computer.compute();
+      if (signature == null) {
+        return success(); // No error, just no valid hover.
+      }
+      final formats = server?.clientCapabilities?.textDocument?.signatureHelp
+          ?.signatureInformation?.documentationFormat;
+      return success(toSignatureHelp(formats, signature));
+    });
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_states.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_states.dart
new file mode 100644
index 0000000..af58e9c
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_states.dart
@@ -0,0 +1,82 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_completion.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_definition.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_document_symbols.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_format_on_type.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_formatting.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_hover.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_initialize.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_initialized.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_references.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_signature_help.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_text_document_changes.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+
+class InitializedStateMessageHandler extends ServerStateMessageHandler {
+  InitializedStateMessageHandler(LspAnalysisServer server) : super(server) {
+    reject(Method.initialize, ServerErrorCodes.ServerAlreadyInitialized,
+        'Server already initialized');
+    reject(Method.initialized, ServerErrorCodes.ServerAlreadyInitialized,
+        'Server already initialized');
+    registerHandler(new TextDocumentOpenHandler(server));
+    registerHandler(new TextDocumentChangeHandler(server));
+    registerHandler(new TextDocumentCloseHandler(server));
+    registerHandler(new HoverHandler(server));
+    registerHandler(new CompletionHandler(server));
+    registerHandler(new SignatureHelpHandler(server));
+    registerHandler(new DefinitionHandler(server));
+    registerHandler(new ReferencesHandler(server));
+    registerHandler(new FormattingHandler(server));
+    registerHandler(new FormatOnTypeHandler(server));
+    registerHandler(new DocumentSymbolHandler(server));
+  }
+}
+
+class InitializingStateMessageHandler extends ServerStateMessageHandler {
+  InitializingStateMessageHandler(
+      LspAnalysisServer server, List<String> openWorkspacePaths)
+      : super(server) {
+    reject(Method.initialize, ServerErrorCodes.ServerAlreadyInitialized,
+        'Server already initialized');
+    registerHandler(new IntializedMessageHandler(server, openWorkspacePaths));
+  }
+
+  @override
+  ErrorOr<void> handleUnknownMessage(IncomingMessage message) {
+    // Silently drop non-requests.
+    if (message is! RequestMessage) {
+      return success();
+    }
+    return failure(
+        ErrorCodes.ServerNotInitialized,
+        'Unable to handle ${message.method} before the server is initialized '
+        'and the client has sent the initialized notification',
+        null);
+  }
+}
+
+class UninitializedStateMessageHandler extends ServerStateMessageHandler {
+  UninitializedStateMessageHandler(LspAnalysisServer server) : super(server) {
+    registerHandler(new InitializeMessageHandler(server));
+  }
+
+  @override
+  FutureOr<ErrorOr<Object>> handleUnknownMessage(IncomingMessage message) {
+    // Silently drop non-requests.
+    if (message is! RequestMessage) {
+      return success();
+    }
+    return failure(
+        ErrorCodes.ServerNotInitialized,
+        'Unable to handle ${message.method} before client has sent initialize request',
+        null);
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handler_text_document_changes.dart b/pkg/analysis_server/lib/src/lsp/handlers/handler_text_document_changes.dart
new file mode 100644
index 0000000..28ae74c
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handler_text_document_changes.dart
@@ -0,0 +1,91 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+import 'package:analysis_server/src/lsp/mapping.dart';
+import 'package:analysis_server/src/lsp/source_edits.dart';
+
+class TextDocumentChangeHandler
+    extends MessageHandler<DidChangeTextDocumentParams, void> {
+  TextDocumentChangeHandler(LspAnalysisServer server) : super(server);
+  Method get handlesMessage => Method.textDocument_didChange;
+
+  @override
+  DidChangeTextDocumentParams convertParams(Map<String, dynamic> json) =>
+      DidChangeTextDocumentParams.fromJson(json);
+
+  ErrorOr<void> handle(DidChangeTextDocumentParams params) {
+    final path = pathOf(params.textDocument);
+    return path.mapResult((path) => _changeFile(path, params));
+  }
+
+  ErrorOr<void> _changeFile(String path, DidChangeTextDocumentParams params) {
+    final oldContents = server.fileContentOverlay[path];
+    // TODO(dantup): Should we be tracking the version?
+
+    // Visual Studio has been seen to skip didOpen notifications for files that
+    // were already open when the LSP server initialized, so handle this with
+    // a specific message to make it clear what's happened.
+    if (oldContents == null) {
+      return error(
+        ErrorCodes.InvalidParams,
+        'Unable to edit document because the file was not previously opened: $path',
+        null,
+      );
+    }
+    final newContents = applyEdits(oldContents, params.contentChanges);
+    return newContents.mapResult((newcontents) {
+      server.updateOverlay(path, newContents.result);
+      return success();
+    });
+  }
+}
+
+class TextDocumentCloseHandler
+    extends MessageHandler<DidCloseTextDocumentParams, void> {
+  TextDocumentCloseHandler(LspAnalysisServer server) : super(server);
+  Method get handlesMessage => Method.textDocument_didClose;
+
+  @override
+  DidCloseTextDocumentParams convertParams(Map<String, dynamic> json) =>
+      DidCloseTextDocumentParams.fromJson(json);
+
+  ErrorOr<void> handle(DidCloseTextDocumentParams params) {
+    final path = pathOf(params.textDocument);
+    return path.mapResult((path) {
+      server.updateOverlay(path, null);
+      return success();
+    });
+  }
+}
+
+class TextDocumentOpenHandler
+    extends MessageHandler<DidOpenTextDocumentParams, void> {
+  TextDocumentOpenHandler(LspAnalysisServer server) : super(server);
+  Method get handlesMessage => Method.textDocument_didOpen;
+
+  @override
+  DidOpenTextDocumentParams convertParams(Map<String, dynamic> json) =>
+      DidOpenTextDocumentParams.fromJson(json);
+
+  ErrorOr<void> handle(DidOpenTextDocumentParams params) {
+    final doc = params.textDocument;
+    // TODO(dantup): This needs similar error handling to pathOf()
+    final path = Uri.parse(doc.uri).toFilePath();
+    // TODO(dantup): Keep track of versions, so that when we compute fixes etc.
+    // we can send them back versions so the client can drop them if the document
+    // has been modified.
+
+    server.updateOverlay(path, doc.text);
+
+    // If the file did not exist, and is "overlay only", it still should be
+    // analyzed. Add it to driver to which it should have been added.
+    server.contextManager.getDriverFor(path)?.addFile(path);
+
+    return success();
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/handlers/handlers.dart b/pkg/analysis_server/lib/src/lsp/handlers/handlers.dart
new file mode 100644
index 0000000..d58569d
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/handlers/handlers.dart
@@ -0,0 +1,118 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_exit.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_reject.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_shutdown.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+import 'package:analyzer/dart/analysis/results.dart';
+
+/// An object that can handle messages and produce responses for requests.
+///
+/// Clients may not extend, implement or mix-in this class.
+abstract class MessageHandler<P, R> {
+  LspAnalysisServer server;
+
+  MessageHandler(this.server);
+
+  /// The method that this handler can handle.
+  Method get handlesMessage;
+
+  /// Converts an iterable using the provided function and skipping over any
+  /// null values.
+  Iterable<T> convert<T, E>(Iterable<E> items, T Function(E) converter) {
+    return items.map(converter).where((item) => item != null);
+  }
+
+  P convertParams(Map<String, dynamic> json);
+
+  ErrorOr<R> error<R>(ErrorCodes code, String message, Object data) =>
+      new ErrorOr<R>.error(new ResponseError(code, message, data));
+
+  ErrorOr<R> failure<R>(ErrorOr<dynamic> error) =>
+      new ErrorOr<R>.error(error.error);
+
+  FutureOr<ErrorOr<R>> handle(P params);
+
+  /// Handle the given [message]. If the [message] is a [RequestMessage], then the
+  /// return value will be sent back in a [ResponseMessage].
+  /// [NotificationMessage]s are not expected to return results.
+  FutureOr<ErrorOr<R>> handleMessage(IncomingMessage message) {
+    final params = convertParams(message.params);
+    return handle(params);
+  }
+
+  Future<ErrorOr<ResolvedUnitResult>> requireUnit(String path) async {
+    final result = await server.getResolvedUnit(path);
+    if (result?.state != ResultState.VALID) {
+      return error(ServerErrorCodes.InvalidFilePath, 'Invalid file path', path);
+    }
+    return success(result);
+  }
+
+  ErrorOr<R> success<R>([R t]) => new ErrorOr<R>.success(t);
+}
+
+/// A message handler that handles all messages for a given server state.
+abstract class ServerStateMessageHandler {
+  final LspAnalysisServer server;
+  Map<Method, MessageHandler> _messageHandlers = {};
+
+  ServerStateMessageHandler(this.server) {
+    // All server states support shutdown and exit.
+    registerHandler(new ShutdownMessageHandler(server));
+    registerHandler(new ExitMessageHandler(server));
+  }
+
+  ErrorOr<Object> failure<Object>(
+          ErrorCodes code, String message, Object data) =>
+      new ErrorOr<Object>.error(new ResponseError(code, message, data));
+
+  /// Handle the given [message]. If the [message] is a [RequestMessage], then the
+  /// return value will be sent back in a [ResponseMessage].
+  /// [NotificationMessage]s are not expected to return results.
+  FutureOr<ErrorOr<Object>> handleMessage(IncomingMessage message) async {
+    final handler = _messageHandlers[message.method];
+    return handler != null
+        ? handler.handleMessage(message)
+        : handleUnknownMessage(message);
+  }
+
+  FutureOr<ErrorOr<Object>> handleUnknownMessage(IncomingMessage message) {
+    // TODO(dantup): How should we handle unknown notifications that do
+    // *not* start with $/?
+    // https://github.com/Microsoft/language-server-protocol/issues/608
+    if (!_isOptionalRequest(message)) {
+      return failure(
+          ErrorCodes.MethodNotFound, 'Unknown method ${message.method}', null);
+    }
+    return success();
+  }
+
+  registerHandler(MessageHandler handler) {
+    assert(
+        handler.handlesMessage != null,
+        'Unable to register handler ${handler.runtimeType} because it does '
+        'not declare which messages it can handle');
+
+    _messageHandlers[handler.handlesMessage] = handler;
+  }
+
+  reject(Method method, ErrorCodes code, String message) {
+    registerHandler(new RejectMessageHandler(server, method, code, message));
+  }
+
+  ErrorOr<Object> success<Object>([Object t]) => new ErrorOr<Object>.success(t);
+
+  bool _isOptionalRequest(IncomingMessage message) {
+    // Messages that start with $/ are optional and can be silently ignored
+    // if we don't know how to handle them.
+    final stringValue = message.method.toJson();
+    return stringValue is String && stringValue.startsWith(r'$/');
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/lsp_analysis_server.dart b/pkg/analysis_server/lib/src/lsp/lsp_analysis_server.dart
new file mode 100644
index 0000000..3e1d0e7
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/lsp_analysis_server.dart
@@ -0,0 +1,431 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+import 'dart:io' as io;
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/protocol/protocol_generated.dart' as protocol;
+import 'package:analysis_server/src/analysis_server.dart';
+import 'package:analysis_server/src/analysis_server_abstract.dart';
+import 'package:analysis_server/src/context_manager.dart';
+import 'package:analysis_server/src/lsp/channel/lsp_channel.dart';
+import 'package:analysis_server/src/lsp/handlers/handler_states.dart';
+import 'package:analysis_server/src/lsp/handlers/handlers.dart';
+import 'package:analysis_server/src/lsp/mapping.dart';
+import 'package:analysis_server/src/plugin/notification_manager.dart';
+import 'package:analysis_server/src/protocol_server.dart' as protocol;
+import 'package:analysis_server/src/services/search/search_engine.dart';
+import 'package:analysis_server/src/services/search/search_engine_internal.dart';
+import 'package:analysis_server/src/utilities/null_string_sink.dart';
+import 'package:analyzer/file_system/file_system.dart';
+import 'package:analyzer/instrumentation/instrumentation.dart';
+import 'package:analyzer/source/line_info.dart';
+import 'package:analyzer/src/context/builder.dart';
+import 'package:analyzer/src/context/context_root.dart';
+import 'package:analyzer/src/dart/analysis/byte_store.dart';
+import 'package:analyzer/src/dart/analysis/driver.dart' as nd;
+import 'package:analyzer/src/dart/analysis/file_state.dart' as nd;
+import 'package:analyzer/src/dart/analysis/performance_logger.dart';
+import 'package:analyzer/src/dart/analysis/status.dart' as nd;
+import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/generated/sdk.dart';
+import 'package:analyzer/src/plugin/resolver_provider.dart';
+import 'package:watcher/watcher.dart';
+
+/**
+ * Instances of the class [LspAnalysisServer] implement an LSP-based server that
+ * listens on a [CommunicationChannel] for LSP messages and processes them.
+ */
+class LspAnalysisServer extends AbstractAnalysisServer {
+  /// The capabilities of the LSP client. Will be null prior to initialization.
+  ClientCapabilities _clientCapabilities;
+
+  /**
+   * The options of this server instance.
+   */
+  AnalysisServerOptions options;
+
+  /**
+   * The channel from which messages are received and to which responses should
+   * be sent.
+   */
+  final LspServerCommunicationChannel channel;
+
+  /// The [SearchEngine] for this server, may be `null` if indexing is disabled.
+  SearchEngine searchEngine;
+
+  final NotificationManager notificationManager = new NullNotificationManager();
+
+  /**
+   * The object used to manage the SDK's known to this server.
+   */
+  final DartSdkManager sdkManager;
+
+  /**
+   * The instrumentation service that is to be used by this analysis server.
+   */
+  final InstrumentationService instrumentationService;
+
+  /**
+   * The content overlay for all analysis drivers.
+   */
+  final nd.FileContentOverlay fileContentOverlay = new nd.FileContentOverlay();
+
+  /**
+   * The default options used to create new analysis contexts. This object is
+   * also referenced by the ContextManager.
+   */
+  final AnalysisOptionsImpl defaultContextOptions = new AnalysisOptionsImpl();
+
+  /**
+   * The file resolver provider used to override the way file URI's are
+   * resolved in some contexts.
+   */
+  ResolverProvider fileResolverProvider;
+
+  /**
+   * The package resolver provider used to override the way package URI's are
+   * resolved in some contexts.
+   */
+  ResolverProvider packageResolverProvider;
+
+  PerformanceLog _analysisPerformanceLogger;
+
+  ByteStore byteStore;
+
+  nd.AnalysisDriverScheduler analysisDriverScheduler;
+
+  ServerStateMessageHandler messageHandler;
+
+  /**
+   * Initialize a newly created server to send and receive messages to the given
+   * [channel].
+   */
+  LspAnalysisServer(
+    this.channel,
+    ResourceProvider resourceProvider,
+    this.options,
+    this.sdkManager,
+    this.instrumentationService, {
+    ResolverProvider packageResolverProvider: null,
+  }) : super(resourceProvider) {
+    messageHandler = new UninitializedStateMessageHandler(this);
+    defaultContextOptions.generateImplicitErrors = false;
+    defaultContextOptions.useFastaParser = options.useFastaParser;
+
+    {
+      String name = options.newAnalysisDriverLog;
+      StringSink sink = new NullStringSink();
+      if (name != null) {
+        if (name == 'stdout') {
+          sink = io.stdout;
+        } else if (name.startsWith('file:')) {
+          String path = name.substring('file:'.length);
+          sink = new io.File(path).openWrite(mode: io.FileMode.append);
+        }
+      }
+      _analysisPerformanceLogger = new PerformanceLog(sink);
+    }
+    byteStore = createByteStore(resourceProvider);
+    analysisDriverScheduler =
+        new nd.AnalysisDriverScheduler(_analysisPerformanceLogger);
+    analysisDriverScheduler.start();
+
+    contextManager = new ContextManagerImpl(
+        resourceProvider,
+        fileContentOverlay,
+        sdkManager,
+        packageResolverProvider,
+        analyzedFilesGlobs,
+        instrumentationService,
+        defaultContextOptions);
+    final contextManagerCallbacks =
+        new LspServerContextManagerCallbacks(this, resourceProvider);
+    contextManager.callbacks = contextManagerCallbacks;
+    searchEngine = new SearchEngineImpl(driverMap.values);
+
+    channel.listen(handleMessage, onDone: done, onError: error);
+  }
+
+  /// The capabilities of the LSP client. Will be null prior to initialization.
+  ClientCapabilities get clientCapabilities => _clientCapabilities;
+
+  /**
+   * The socket from which messages are being read has been closed.
+   */
+  void done() {}
+
+  /**
+   * There was an error related to the socket from which messages are being
+   * read.
+   */
+  void error(error, stack) {
+    sendServerErrorNotification('Server error', error, stack);
+  }
+
+  /// Return the LineInfo for the file with the given [path]. The file is
+  /// analyzed in one of the analysis drivers to which the file was added,
+  /// otherwise in the first driver, otherwise `null` is returned.
+  LineInfo getLineInfo(String path) {
+    if (!AnalysisEngine.isDartFileName(path)) {
+      return null;
+    }
+
+    return getAnalysisDriver(path)?.getFileSync(path)?.lineInfo;
+  }
+
+  /**
+   * Handle a [message] that was read from the communication channel.
+   */
+  void handleMessage(IncomingMessage message) {
+    // TODO(dantup): Put in all the things this server is missing, like:
+    //     _performance.logRequest(message);
+    runZoned(() {
+      ServerPerformanceStatistics.serverRequests.makeCurrentWhile(() async {
+        try {
+          final result = await messageHandler.handleMessage(message);
+          if (result.isError) {
+            sendErrorResponse(message, result.error);
+          } else if (message is RequestMessage) {
+            channel.sendResponse(new ResponseMessage(
+                message.id, result.result, null, jsonRpcVersion));
+          }
+        } catch (error, stackTrace) {
+          sendErrorResponse(
+              message,
+              new ResponseError(
+                  ServerErrorCodes.UnhandledError,
+                  'An error occurred while handling ${message.method} message',
+                  null));
+          logError(error.toString());
+          if (stackTrace != null) {
+            logError(stackTrace.toString());
+          }
+        }
+      });
+    }, onError: error);
+  }
+
+  void logError(String message) {
+    channel.sendNotification(new NotificationMessage(
+      Method.window_logMessage,
+      new LogMessageParams(MessageType.Error, message),
+      jsonRpcVersion,
+    ));
+  }
+
+  void sendErrorResponse(IncomingMessage message, ResponseError error) {
+    if (message is RequestMessage) {
+      channel.sendResponse(
+          new ResponseMessage(message.id, null, error, jsonRpcVersion));
+      // Since the LSP client might not show the failed requests to the user,
+      // also ensure the error is logged to the client.
+      logError(error.message);
+    } else {
+      // For notifications where we couldn't respond with an error, send it as
+      // show instead of log.
+      showError(error.message);
+    }
+  }
+
+  /**
+   * Send the given [notification] to the client.
+   */
+  void sendNotification(NotificationMessage notification) {
+    channel.sendNotification(notification);
+  }
+
+  /**
+   * Send the given [response] to the client.
+   */
+  void sendResponse(ResponseMessage response) {
+    channel.sendResponse(response);
+  }
+
+  void sendServerErrorNotification(String message, exception, stackTrace) {
+    final fullError = new StringBuffer();
+    fullError.writeln(message);
+    if (exception != null) {
+      fullError.writeln(exception.toString());
+    }
+    if (stackTrace != null) {
+      fullError.writeln(stackTrace.toString());
+    }
+    showError(message); // Show message to the user.
+    logError(fullError.toString()); // Log the full message.
+  }
+
+  void setAnalysisRoots(List<String> includedPaths, List<String> excludedPaths,
+      Map<String, String> packageRoots) {
+    contextManager.setRoots(includedPaths, excludedPaths, packageRoots);
+  }
+
+  void setClientCapabilities(ClientCapabilities capabilities) {
+    _clientCapabilities = capabilities;
+  }
+
+  /**
+   * Returns `true` if errors should be reported for [file] with the given
+   * absolute path.
+   */
+  bool shouldSendErrorsNotificationFor(String file) {
+    return contextManager.isInAnalysisRoot(file);
+  }
+
+  void showError(String message) {
+    channel.sendNotification(new NotificationMessage(
+      Method.window_showMessage,
+      new ShowMessageParams(MessageType.Error, message),
+      jsonRpcVersion,
+    ));
+  }
+
+  Future<void> shutdown() {
+    // Defer closing the channel so that the shutdown response can be sent and
+    // logged.
+    new Future(() {
+      channel.close();
+    });
+
+    return new Future.value();
+  }
+
+  void updateOverlay(String path, String contents) {
+    fileContentOverlay[path] = contents;
+    driverMap.values.forEach((driver) => driver.changeFile(path));
+  }
+}
+
+class LspServerContextManagerCallbacks extends ContextManagerCallbacks {
+  // TODO(dantup): Lots of copy/paste from the Analysis Server one here.
+
+  final LspAnalysisServer analysisServer;
+
+  /**
+   * The [ResourceProvider] by which paths are converted into [Resource]s.
+   */
+  final ResourceProvider resourceProvider;
+
+  LspServerContextManagerCallbacks(this.analysisServer, this.resourceProvider);
+
+  @override
+  NotificationManager get notificationManager =>
+      analysisServer.notificationManager;
+
+  @override
+  nd.AnalysisDriver addAnalysisDriver(
+      Folder folder, ContextRoot contextRoot, AnalysisOptions options) {
+    ContextBuilder builder = createContextBuilder(folder, options);
+    nd.AnalysisDriver analysisDriver = builder.buildDriver(contextRoot);
+    analysisDriver.results.listen((result) {
+      String path = result.path;
+      if (analysisServer.shouldSendErrorsNotificationFor(path)) {
+        final serverErrors = protocol.mapEngineErrors(
+            result.session.analysisContext.analysisOptions,
+            result.lineInfo,
+            result.errors,
+            toDiagnostic);
+
+        final params = new PublishDiagnosticsParams(
+            Uri.file(result.path).toString(), serverErrors);
+        // TODO(dantup): Move all these method names to constants.
+        final message = new NotificationMessage(
+          Method.textDocument_publishDiagnostics,
+          params,
+          jsonRpcVersion,
+        );
+        analysisServer.sendNotification(message);
+      }
+    });
+    analysisDriver.exceptions.listen((nd.ExceptionResult result) {
+      String message = 'Analysis failed: ${result.path}';
+      if (result.contextKey != null) {
+        message += ' context: ${result.contextKey}';
+      }
+      AnalysisEngine.instance.logger.logError(message, result.exception);
+    });
+    analysisServer.driverMap[folder] = analysisDriver;
+    return analysisDriver;
+  }
+
+  @override
+  void afterWatchEvent(WatchEvent event) {
+    // TODO: implement afterWatchEvent
+  }
+
+  @override
+  void applyChangesToContext(Folder contextFolder, ChangeSet changeSet) {
+    nd.AnalysisDriver analysisDriver = analysisServer.driverMap[contextFolder];
+    if (analysisDriver != null) {
+      changeSet.addedSources.forEach((source) {
+        analysisDriver.addFile(source.fullName);
+      });
+      changeSet.changedSources.forEach((source) {
+        analysisDriver.changeFile(source.fullName);
+      });
+      changeSet.removedSources.forEach((source) {
+        analysisDriver.removeFile(source.fullName);
+      });
+    }
+  }
+
+  @override
+  void applyFileRemoved(nd.AnalysisDriver driver, String file) {
+    driver.removeFile(file);
+    // sendAnalysisNotificationFlushResults(analysisServer, [file]);
+  }
+
+  @override
+  void broadcastWatchEvent(WatchEvent event) {
+    // TODO: implement broadcastWatchEvent
+  }
+
+  @override
+  ContextBuilder createContextBuilder(Folder folder, AnalysisOptions options) {
+    String defaultPackageFilePath = null;
+    String defaultPackagesDirectoryPath = null;
+    String path = (analysisServer.contextManager as ContextManagerImpl)
+        .normalizedPackageRoots[folder.path];
+    if (path != null) {
+      Resource resource = resourceProvider.getResource(path);
+      if (resource.exists) {
+        if (resource is File) {
+          defaultPackageFilePath = path;
+        } else {
+          defaultPackagesDirectoryPath = path;
+        }
+      }
+    }
+
+    ContextBuilderOptions builderOptions = new ContextBuilderOptions();
+    builderOptions.defaultOptions = options;
+    builderOptions.defaultPackageFilePath = defaultPackageFilePath;
+    builderOptions.defaultPackagesDirectoryPath = defaultPackagesDirectoryPath;
+    ContextBuilder builder = new ContextBuilder(
+        resourceProvider, analysisServer.sdkManager, null,
+        options: builderOptions);
+    builder.fileResolverProvider = analysisServer.fileResolverProvider;
+    builder.packageResolverProvider = analysisServer.packageResolverProvider;
+    builder.analysisDriverScheduler = analysisServer.analysisDriverScheduler;
+    builder.performanceLog = analysisServer._analysisPerformanceLogger;
+    builder.byteStore = analysisServer.byteStore;
+    builder.enableIndex = true;
+    builder.fileContentOverlay = analysisServer.fileContentOverlay;
+    return builder;
+  }
+
+  @override
+  void removeContext(Folder folder, List<String> flushedFiles) {
+    // sendAnalysisNotificationFlushResults(analysisServer, flushedFiles);
+    nd.AnalysisDriver driver = analysisServer.driverMap.remove(folder);
+    driver.dispose();
+  }
+}
+
+class NullNotificationManager implements NotificationManager {
+  @override
+  noSuchMethod(Invocation invocation) {}
+}
diff --git a/pkg/analysis_server/lib/src/lsp/lsp_packet_transformer.dart b/pkg/analysis_server/lib/src/lsp/lsp_packet_transformer.dart
new file mode 100644
index 0000000..c766875
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/lsp_packet_transformer.dart
@@ -0,0 +1,73 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+import 'dart:convert';
+
+/// Transforms a stream of LSP data in the form:
+///
+///     Content-Length: xxx\r\n
+///     Content-Type: application/vscode-jsonrpc; charset=utf-8\r\n
+///     \r\n
+///     { JSON payload }
+///
+/// into just the JSON payload, decoded with the specified encoding. Line endings
+/// for headers must be \r\n on all platforms as defined in the LSP spec.
+class LspPacketTransformer extends StreamTransformerBase<List<int>, String> {
+  @override
+  Stream<String> bind(Stream<List<int>> stream) {
+    StreamSubscription<int> input;
+    StreamController<String> _output;
+    final buffer = <int>[];
+    bool isParsingHeaders = true;
+    int contentLength;
+    _output = StreamController<String>(
+      onListen: () {
+        input = stream.expand((b) => b).listen(
+          (codeUnit) {
+            buffer.add(codeUnit);
+            if (isParsingHeaders && _endsWithCrLfCrLf(buffer)) {
+              contentLength = _parseContentLength(buffer);
+              buffer.clear();
+              isParsingHeaders = false;
+            } else if (!isParsingHeaders && buffer.length >= contentLength) {
+              // LSP Spec: "It defaults to utf-8, which is the only encoding
+              // supported right now".
+              _output.add(utf8.decode(buffer));
+              buffer.clear();
+              isParsingHeaders = true;
+            }
+          },
+          onError: _output.addError,
+          onDone: _output.close,
+        );
+      },
+      onPause: () => input.pause(),
+      onResume: () => input.resume(),
+      onCancel: () => input.cancel(),
+    );
+    return _output.stream;
+  }
+
+  /// Whether [buffer] ends in '\r\n\r\n'.
+  static bool _endsWithCrLfCrLf(List<int> buffer) {
+    var l = buffer.length;
+    return l > 4 &&
+        buffer[l - 1] == 10 &&
+        buffer[l - 2] == 13 &&
+        buffer[l - 3] == 10 &&
+        buffer[l - 4] == 13;
+  }
+
+  /// Decodes [buffer] into a String and returns the 'Content-Length' header value.
+  static int _parseContentLength(List<int> buffer) {
+    // Headers are specified as always ASCII in LSP.
+    var asString = ascii.decode(buffer);
+    var headers = asString.split('\r\n');
+    var lengthHeader =
+        headers.firstWhere((h) => h.startsWith('Content-Length'));
+    var length = lengthHeader.split(':').last.trim();
+    return int.parse(length);
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/lsp_socket_server.dart b/pkg/analysis_server/lib/src/lsp/lsp_socket_server.dart
new file mode 100644
index 0000000..1831321
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/lsp_socket_server.dart
@@ -0,0 +1,82 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/analysis_server.dart';
+import 'package:analysis_server/src/lsp/channel/lsp_channel.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+import 'package:analysis_server/src/socket_server.dart';
+import 'package:analyzer/file_system/physical_file_system.dart';
+import 'package:analyzer/instrumentation/instrumentation.dart';
+import 'package:analyzer/src/generated/sdk.dart';
+
+/**
+ * Instances of the class [SocketServer] implement the common parts of
+ * http-based and stdio-based analysis servers.  The primary responsibility of
+ * the SocketServer is to manage the lifetime of the AnalysisServer and to
+ * encode and decode the JSON messages exchanged with the client.
+ */
+class LspSocketServer {
+  final AnalysisServerOptions analysisServerOptions;
+  /**
+   * The analysis server that was created when a client established a
+   * connection, or `null` if no such connection has yet been established.
+   */
+  LspAnalysisServer analysisServer;
+
+  /**
+   * The function used to create a new SDK using the default SDK.
+   */
+  final DartSdkManager sdkManager;
+
+  final InstrumentationService instrumentationService;
+
+  LspSocketServer(
+    this.analysisServerOptions,
+    this.sdkManager,
+    this.instrumentationService,
+  );
+
+  /**
+   * Create an analysis server which will communicate with the client using the
+   * given serverChannel.
+   */
+  void createAnalysisServer(LspServerCommunicationChannel serverChannel) {
+    if (analysisServer != null) {
+      ResponseError error = new ResponseError<void>(
+          ServerErrorCodes.ServerAlreadyStarted,
+          'Server already started',
+          null);
+      serverChannel.sendNotification(new NotificationMessage(
+        Method.window_showMessage,
+        new ShowMessageParams(MessageType.Error, error.message),
+        jsonRpcVersion,
+      ));
+      serverChannel.listen((IncomingMessage message) {
+        if (message is RequestMessage) {
+          serverChannel.sendResponse(
+              new ResponseMessage(message.id, null, error, jsonRpcVersion));
+        }
+      });
+      return;
+    }
+
+    PhysicalResourceProvider resourceProvider;
+    if (analysisServerOptions.fileReadMode == 'as-is') {
+      resourceProvider = new PhysicalResourceProvider(null,
+          stateLocation: analysisServerOptions.cacheFolder);
+    } else if (analysisServerOptions.fileReadMode == 'normalize-eol-always') {
+      resourceProvider = new PhysicalResourceProvider(
+          PhysicalResourceProvider.NORMALIZE_EOL_ALWAYS,
+          stateLocation: analysisServerOptions.cacheFolder);
+    } else {
+      throw new Exception(
+          'File read mode was set to the unknown mode: $analysisServerOptions.fileReadMode');
+    }
+
+    analysisServer = new LspAnalysisServer(serverChannel, resourceProvider,
+        analysisServerOptions, sdkManager, instrumentationService);
+  }
+}
diff --git a/pkg/analysis_server/lib/src/lsp/mapping.dart b/pkg/analysis_server/lib/src/lsp/mapping.dart
new file mode 100644
index 0000000..414ba60
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/mapping.dart
@@ -0,0 +1,499 @@
+import 'dart:collection';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart' as lsp;
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart' as lsp;
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/dartdoc.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart' as lsp;
+import 'package:analysis_server/src/protocol_server.dart' as server
+    hide AnalysisError;
+import 'package:analyzer/dart/analysis/results.dart' as server;
+import 'package:analyzer/error/error.dart' as server;
+import 'package:analyzer/source/line_info.dart' as server;
+import 'package:analyzer/src/generated/source.dart' as server;
+
+const languageSourceName = 'dart';
+
+lsp.Either2<String, lsp.MarkupContent> asStringOrMarkupContent(
+    List<lsp.MarkupKind> preferredFormats, String content) {
+  if (content == null) {
+    return null;
+  }
+
+  return preferredFormats == null
+      ? new lsp.Either2<String, lsp.MarkupContent>.t1(content)
+      : new lsp.Either2<String, lsp.MarkupContent>.t2(
+          _asMarkup(preferredFormats, content));
+}
+
+lsp.CompletionItemKind elementKindToCompletionItemKind(
+  HashSet<lsp.CompletionItemKind> clientSupportedCompletionKinds,
+  server.ElementKind kind,
+) {
+  bool isSupported(lsp.CompletionItemKind kind) =>
+      clientSupportedCompletionKinds.contains(kind);
+
+  List<lsp.CompletionItemKind> getKindPreferences() {
+    switch (kind) {
+      case server.ElementKind.CLASS:
+      case server.ElementKind.CLASS_TYPE_ALIAS:
+        return const [lsp.CompletionItemKind.Class];
+      case server.ElementKind.COMPILATION_UNIT:
+        return const [lsp.CompletionItemKind.Module];
+      case server.ElementKind.CONSTRUCTOR:
+      case server.ElementKind.CONSTRUCTOR_INVOCATION:
+        return const [lsp.CompletionItemKind.Constructor];
+      case server.ElementKind.ENUM:
+      case server.ElementKind.ENUM_CONSTANT:
+        return const [lsp.CompletionItemKind.Enum];
+      case server.ElementKind.FIELD:
+        return const [lsp.CompletionItemKind.Field];
+      case server.ElementKind.FILE:
+        return const [lsp.CompletionItemKind.File];
+      case server.ElementKind.FUNCTION:
+        return const [lsp.CompletionItemKind.Function];
+      case server.ElementKind.FUNCTION_TYPE_ALIAS:
+        return const [lsp.CompletionItemKind.Class];
+      case server.ElementKind.GETTER:
+        return const [lsp.CompletionItemKind.Property];
+      case server.ElementKind.LABEL:
+        // There isn't really a good CompletionItemKind for labels so we'll
+        // just use the Text option.
+        return const [lsp.CompletionItemKind.Text];
+      case server.ElementKind.LIBRARY:
+        return const [lsp.CompletionItemKind.Module];
+      case server.ElementKind.LOCAL_VARIABLE:
+        return const [lsp.CompletionItemKind.Variable];
+      case server.ElementKind.METHOD:
+        return const [lsp.CompletionItemKind.Method];
+      case server.ElementKind.PARAMETER:
+      case server.ElementKind.PREFIX:
+        return const [lsp.CompletionItemKind.Variable];
+      case server.ElementKind.SETTER:
+        return const [lsp.CompletionItemKind.Property];
+      case server.ElementKind.TOP_LEVEL_VARIABLE:
+        return const [lsp.CompletionItemKind.Variable];
+      case server.ElementKind.TYPE_PARAMETER:
+        return const [
+          lsp.CompletionItemKind.TypeParameter,
+          lsp.CompletionItemKind.Variable,
+        ];
+      case server.ElementKind.UNIT_TEST_GROUP:
+      case server.ElementKind.UNIT_TEST_TEST:
+        return const [lsp.CompletionItemKind.Method];
+      default:
+        return null;
+    }
+  }
+
+  return getKindPreferences().firstWhere(isSupported, orElse: () => null);
+}
+
+lsp.SymbolKind elementKindToSymbolKind(
+  HashSet<lsp.SymbolKind> clientSupportedSymbolKinds,
+  server.ElementKind kind,
+) {
+  bool isSupported(lsp.SymbolKind kind) =>
+      clientSupportedSymbolKinds.contains(kind);
+
+  List<lsp.SymbolKind> getKindPreferences() {
+    switch (kind) {
+      case server.ElementKind.CLASS:
+      case server.ElementKind.CLASS_TYPE_ALIAS:
+        return const [lsp.SymbolKind.Class];
+      case server.ElementKind.COMPILATION_UNIT:
+        return const [lsp.SymbolKind.Module];
+      case server.ElementKind.CONSTRUCTOR:
+      case server.ElementKind.CONSTRUCTOR_INVOCATION:
+        return const [lsp.SymbolKind.Constructor];
+      case server.ElementKind.ENUM:
+      case server.ElementKind.ENUM_CONSTANT:
+        return const [lsp.SymbolKind.Enum];
+      case server.ElementKind.FIELD:
+        return const [lsp.SymbolKind.Field];
+      case server.ElementKind.FILE:
+        return const [lsp.SymbolKind.File];
+      case server.ElementKind.FUNCTION:
+      case server.ElementKind.FUNCTION_INVOCATION:
+        return const [lsp.SymbolKind.Function];
+      case server.ElementKind.FUNCTION_TYPE_ALIAS:
+        return const [lsp.SymbolKind.Class];
+      case server.ElementKind.GETTER:
+        return const [lsp.SymbolKind.Property];
+      case server.ElementKind.LABEL:
+        // There isn't really a good SymbolKind for labels so we'll
+        // just use the Null option.
+        return const [lsp.SymbolKind.Null];
+      case server.ElementKind.LIBRARY:
+        return const [lsp.SymbolKind.Namespace];
+      case server.ElementKind.LOCAL_VARIABLE:
+        return const [lsp.SymbolKind.Variable];
+      case server.ElementKind.METHOD:
+        return const [lsp.SymbolKind.Method];
+      case server.ElementKind.MIXIN:
+        return const [lsp.SymbolKind.Class];
+      case server.ElementKind.PARAMETER:
+      case server.ElementKind.PREFIX:
+        return const [lsp.SymbolKind.Variable];
+      case server.ElementKind.SETTER:
+        return const [lsp.SymbolKind.Property];
+      case server.ElementKind.TOP_LEVEL_VARIABLE:
+        return const [lsp.SymbolKind.Variable];
+      case server.ElementKind.TYPE_PARAMETER:
+        return const [
+          lsp.SymbolKind.TypeParameter,
+          lsp.SymbolKind.Variable,
+        ];
+      case server.ElementKind.UNIT_TEST_GROUP:
+      case server.ElementKind.UNIT_TEST_TEST:
+        return const [lsp.SymbolKind.Method];
+      default:
+        // TODO(dantup): Do we want an assert here to crash in test runs? It's
+        // valid to return null but we should aim to have everything above.
+        return null;
+    }
+  }
+
+  return getKindPreferences().firstWhere(isSupported, orElse: () => null);
+}
+
+String getCompletionDetail(
+  server.CompletionSuggestion suggestion,
+  lsp.CompletionItemKind completionKind,
+  bool clientSupportsDeprecated,
+) {
+  final hasElement = suggestion.element != null;
+  final hasParameters = hasElement &&
+      suggestion.element.parameters != null &&
+      suggestion.element.parameters.isNotEmpty;
+  final hasReturnType = hasElement &&
+      suggestion.element.returnType != null &&
+      suggestion.element.returnType.isNotEmpty;
+  final hasParameterType =
+      suggestion.parameterType != null && suggestion.parameterType.isNotEmpty;
+
+  final prefix = clientSupportsDeprecated || !suggestion.isDeprecated
+      ? ''
+      : '(Deprecated) ';
+
+  if (completionKind == lsp.CompletionItemKind.Property) {
+    // Setters appear as methods with one arg but they also cause getters to not
+    // appear in the completion list, so displaying them as setters is misleading.
+    // To avoid this, always show only the return type, whether it's a getter
+    // or a setter.
+    return prefix +
+        (suggestion.element.kind == server.ElementKind.GETTER
+            ? suggestion.element.returnType
+            // Don't assume setters always have parameters
+            // See https://github.com/dart-lang/sdk/issues/27747
+            : suggestion.element.parameters != null &&
+                    suggestion.element.parameters.isNotEmpty
+                // Extract the type part from '(MyType value)`
+                ? suggestion.element.parameters.substring(
+                    1, suggestion.element.parameters.lastIndexOf(" "))
+                : '');
+  } else if (hasParameters && hasReturnType) {
+    return '$prefix${suggestion.element.parameters} → ${suggestion.element.returnType}';
+  } else if (hasReturnType) {
+    return '$prefix${suggestion.element.returnType}';
+  } else if (hasParameterType) {
+    return '$prefix${suggestion.parameterType}';
+  } else {
+    return prefix;
+  }
+}
+
+lsp.Location navigationTargetToLocation(String targetFilePath,
+    server.NavigationTarget target, server.LineInfo lineInfo) {
+  if (lineInfo == null) {
+    return null;
+  }
+
+  return new Location(
+    Uri.file(targetFilePath).toString(),
+    toRange(lineInfo, target.offset, target.length),
+  );
+}
+
+/// Returns the file system path for a TextDocumentIdentifier.
+ErrorOr<String> pathOf(lsp.TextDocumentIdentifier doc) {
+  final uri = Uri.tryParse(doc.uri);
+  final isValidFileUri = (uri?.isScheme('file') ?? false);
+  if (!isValidFileUri) {
+    return new ErrorOr<String>.error(new ResponseError(
+        lsp.ServerErrorCodes.InvalidFilePath,
+        'URI was not a valid file:// URI',
+        doc.uri));
+  }
+  try {
+    return new ErrorOr<String>.success(uri.toFilePath());
+  } catch (e) {
+    // Even if tryParse() works and file == scheme, toFilePath() can throw on
+    // Windows if there are invalid characters.
+    return new ErrorOr<String>.error(new ResponseError(
+        lsp.ServerErrorCodes.InvalidFilePath,
+        'File URI did not contain a valid file path',
+        doc.uri));
+  }
+}
+
+lsp.Location searchResultToLocation(
+    server.SearchResult result, server.LineInfo lineInfo) {
+  final location = result.location;
+
+  if (lineInfo == null) {
+    return null;
+  }
+
+  return new Location(
+    Uri.file(result.location.file).toString(),
+    toRange(lineInfo, location.offset, location.length),
+  );
+}
+
+lsp.CompletionItemKind suggestionKindToCompletionItemKind(
+  HashSet<lsp.CompletionItemKind> clientSupportedCompletionKinds,
+  server.CompletionSuggestionKind kind,
+  String label,
+) {
+  bool isSupported(lsp.CompletionItemKind kind) =>
+      clientSupportedCompletionKinds.contains(kind);
+
+  List<lsp.CompletionItemKind> getKindPreferences() {
+    switch (kind) {
+      case server.CompletionSuggestionKind.ARGUMENT_LIST:
+        return const [lsp.CompletionItemKind.Variable];
+      case server.CompletionSuggestionKind.IMPORT:
+        // For package/relative URIs, we can send File/Folder kinds for better icons.
+        if (!label.startsWith('dart:')) {
+          return label.endsWith('.dart')
+              ? const [
+                  lsp.CompletionItemKind.File,
+                  lsp.CompletionItemKind.Module,
+                ]
+              : const [
+                  lsp.CompletionItemKind.Folder,
+                  lsp.CompletionItemKind.Module,
+                ];
+        }
+        return const [lsp.CompletionItemKind.Module];
+      case server.CompletionSuggestionKind.IDENTIFIER:
+        return const [lsp.CompletionItemKind.Variable];
+      case server.CompletionSuggestionKind.INVOCATION:
+        return const [lsp.CompletionItemKind.Method];
+      case server.CompletionSuggestionKind.KEYWORD:
+        return const [lsp.CompletionItemKind.Keyword];
+      case server.CompletionSuggestionKind.NAMED_ARGUMENT:
+        return const [lsp.CompletionItemKind.Variable];
+      case server.CompletionSuggestionKind.OPTIONAL_ARGUMENT:
+        return const [lsp.CompletionItemKind.Variable];
+      case server.CompletionSuggestionKind.PARAMETER:
+        return const [lsp.CompletionItemKind.Value];
+      default:
+        return null;
+    }
+  }
+
+  return getKindPreferences().firstWhere(isSupported, orElse: () => null);
+}
+
+lsp.CompletionItem toCompletionItem(
+  lsp.TextDocumentClientCapabilitiesCompletion completionCapabilities,
+  HashSet<lsp.CompletionItemKind> supportedCompletionItemKinds,
+  server.LineInfo lineInfo,
+  server.CompletionSuggestion suggestion,
+  int replacementOffset,
+  int replacementLength,
+) {
+  final label = suggestion.displayText != null
+      ? suggestion.displayText
+      : suggestion.completion;
+
+  final useSnippets =
+      completionCapabilities?.completionItem?.snippetSupport == true;
+  final useDeprecated =
+      completionCapabilities?.completionItem?.deprecatedSupport == true;
+  final formats = completionCapabilities?.completionItem?.documentationFormat;
+
+  final completionKind = suggestion.element != null
+      ? elementKindToCompletionItemKind(
+          supportedCompletionItemKinds, suggestion.element.kind)
+      : suggestionKindToCompletionItemKind(
+          supportedCompletionItemKinds, suggestion.kind, label);
+
+  return new lsp.CompletionItem(
+    label,
+    completionKind,
+    getCompletionDetail(suggestion, completionKind, useDeprecated),
+    asStringOrMarkupContent(formats, cleanDartdoc(suggestion.docComplete)),
+    useDeprecated ? suggestion.isDeprecated : null,
+    false, // preselect
+    // Relevance is a number, highest being best. LSP does text sort so subtract
+    // from a large number so that a text sort will result in the correct order.
+    // 555 -> 999455
+    //  10 -> 999990
+    //   1 -> 999999
+    (1000000 - suggestion.relevance).toString(),
+    null, // filterText uses label if not set
+    null, // insertText is deprecated, but also uses label if not set
+    useSnippets ? lsp.InsertTextFormat.Snippet : lsp.InsertTextFormat.PlainText,
+    new lsp.TextEdit(
+      // TODO(dantup): If `clientSupportsSnippets == true` then we should map
+      // `selection` in to a snippet (see how Dart Code does this).
+      toRange(lineInfo, replacementOffset, replacementLength),
+      suggestion.completion,
+    ),
+    [], // additionalTextEdits, used for adding imports, etc.
+    [], // commitCharacters
+    null, // command
+    null, // data, useful for if using lazy resolve, this comes back to us
+  );
+}
+
+lsp.Diagnostic toDiagnostic(
+    server.LineInfo lineInfo, server.AnalysisError error,
+    [server.ErrorSeverity errorSeverity]) {
+  server.ErrorCode errorCode = error.errorCode;
+
+  // Default to the error's severity if none is specified.
+  errorSeverity ??= errorCode.errorSeverity;
+
+  return new lsp.Diagnostic(
+    toRange(lineInfo, error.offset, error.length),
+    toDiagnosticSeverity(errorSeverity),
+    errorCode.name.toLowerCase(),
+    languageSourceName,
+    error.message,
+    null,
+  );
+}
+
+lsp.DiagnosticSeverity toDiagnosticSeverity(server.ErrorSeverity severity) {
+  switch (severity) {
+    case server.ErrorSeverity.ERROR:
+      return lsp.DiagnosticSeverity.Error;
+    case server.ErrorSeverity.WARNING:
+      return lsp.DiagnosticSeverity.Warning;
+    case server.ErrorSeverity.INFO:
+      return lsp.DiagnosticSeverity.Information;
+    // Note: LSP also supports "Hint", but they won't render in things like the
+    // VS Code errors list as they're apparently intended to communicate
+    // non-visible diagnostics back (for example, if you wanted to grey out
+    // unreachable code without producing an item in the error list).
+    default:
+      throw 'Unknown AnalysisErrorSeverity: $severity';
+  }
+}
+
+ErrorOr<int> toOffset(server.LineInfo lineInfo, lsp.Position pos) {
+  if (pos.line > lineInfo.lineCount) {
+    return new ErrorOr<int>.error(new lsp.ResponseError(
+        lsp.ServerErrorCodes.InvalidFileLineCol,
+        'Invalid line number',
+        pos.line));
+  }
+  // TODO(dantup): Is there any way to validate the character? We could ensure
+  // it's less than the offset of the next line, but that would only work for
+  // all lines except the last one.
+  return new ErrorOr<int>.success(
+      lineInfo.getOffsetOfLine(pos.line) + pos.character);
+}
+
+lsp.Position toPosition(server.CharacterLocation location) {
+  // LSP is zero-based, but analysis server is 1-based.
+  return new lsp.Position(location.lineNumber - 1, location.columnNumber - 1);
+}
+
+lsp.Range toRange(server.LineInfo lineInfo, int offset, int length) {
+  server.CharacterLocation start = lineInfo.getLocation(offset);
+  server.CharacterLocation end = lineInfo.getLocation(offset + length);
+
+  return new lsp.Range(
+    toPosition(start),
+    toPosition(end),
+  );
+}
+
+lsp.SignatureHelp toSignatureHelp(List<lsp.MarkupKind> preferredFormats,
+    server.AnalysisGetSignatureResult signature) {
+  // For now, we only support returning one (though we may wish to use named
+  // args. etc. to provide one for each possible "next" option when the cursor
+  // is at the end ready to provide another argument).
+
+  /// Gets the label for an individual parameter in the form
+  ///     String s = 'foo'
+  String getParamLabel(server.ParameterInfo p) {
+    final def = p.defaultValue != null ? ' = ${p.defaultValue}' : '';
+    return '${p.type} ${p.name}$def';
+  }
+
+  /// Gets the full signature label in the form
+  ///     foo(String s, int i, bool a = true)
+  String getSignatureLabel(server.AnalysisGetSignatureResult resp) {
+    final req = signature.parameters
+        .where((p) => p.kind == server.ParameterKind.REQUIRED)
+        .toList();
+    final opt = signature.parameters
+        .where((p) => p.kind == server.ParameterKind.OPTIONAL)
+        .toList();
+    final named = signature.parameters
+        .where((p) => p.kind == server.ParameterKind.NAMED)
+        .toList();
+    final params = [];
+    if (req.isNotEmpty) {
+      params.add(req.map(getParamLabel).join(", "));
+    }
+    if (opt.isNotEmpty) {
+      params.add("[" + opt.map(getParamLabel).join(", ") + "]");
+    }
+    if (named.isNotEmpty) {
+      params.add("{" + named.map(getParamLabel).join(", ") + "}");
+    }
+    return '${resp.name}(${params.join(", ")})';
+  }
+
+  lsp.ParameterInformation toParameterInfo(server.ParameterInfo param) {
+    return new lsp.ParameterInformation(getParamLabel(param), null);
+  }
+
+  final cleanDoc = cleanDartdoc(signature.dartdoc);
+
+  return new lsp.SignatureHelp(
+    [
+      new lsp.SignatureInformation(
+        getSignatureLabel(signature),
+        asStringOrMarkupContent(preferredFormats, cleanDoc),
+        signature.parameters.map(toParameterInfo).toList(),
+      ),
+    ],
+    0, // activeSignature
+    null, // activeParameter
+  );
+}
+
+lsp.MarkupContent _asMarkup(
+    List<lsp.MarkupKind> preferredFormats, String content) {
+  // It's not valid to call this function with a null format, as null formats
+  // do not support MarkupContent. [asStringOrMarkupContent] is probably the
+  // better choice.
+  assert(preferredFormats != null);
+
+  if (content == null) {
+    return null;
+  }
+
+  if (preferredFormats.isEmpty) {
+    preferredFormats.add(lsp.MarkupKind.Markdown);
+  }
+
+  final supportsMarkdown = preferredFormats.contains(lsp.MarkupKind.Markdown);
+  final supportsPlain = preferredFormats.contains(lsp.MarkupKind.PlainText);
+  // Since our PlainText version is actually just Markdown, only advertise it
+  // as PlainText if the client explicitly supports PlainText and not Markdown.
+  final format = supportsPlain && !supportsMarkdown
+      ? lsp.MarkupKind.PlainText
+      : lsp.MarkupKind.Markdown;
+
+  return new lsp.MarkupContent(format, content);
+}
diff --git a/pkg/analysis_server/lib/src/lsp/source_edits.dart b/pkg/analysis_server/lib/src/lsp/source_edits.dart
new file mode 100644
index 0000000..200ac92
--- /dev/null
+++ b/pkg/analysis_server/lib/src/lsp/source_edits.dart
@@ -0,0 +1,61 @@
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/lsp/mapping.dart';
+import 'package:analyzer/source/line_info.dart';
+import 'package:dart_style/dart_style.dart';
+
+final DartFormatter formatter = new DartFormatter();
+
+ErrorOr<String> applyEdits(
+    String oldContent, List<TextDocumentContentChangeEvent> changes) {
+  String newContent = oldContent;
+  for (var change in changes) {
+    if (change.range == null && change.rangeLength == null) {
+      newContent = change.text;
+    } else {
+      final lines = LineInfo.fromContent(newContent);
+      final offsetStart = toOffset(lines, change.range.start);
+      final offsetEnd = toOffset(lines, change.range.end);
+      if (offsetStart.isError) {
+        return new ErrorOr<String>.error(offsetStart.error);
+      }
+      if (offsetEnd.isError) {
+        return new ErrorOr<String>.error(offsetEnd.error);
+      }
+      newContent = newContent.replaceRange(
+          offsetStart.result, offsetEnd.result, change.text);
+    }
+  }
+  return new ErrorOr<String>.success(newContent);
+}
+
+List<TextEdit> generateEditsForFormatting(String unformattedSource) {
+  final lineInfo = new LineInfo.fromContent(unformattedSource);
+  final code =
+      new SourceCode(unformattedSource, uri: null, isCompilationUnit: true);
+  SourceCode formattedResult;
+  try {
+    formattedResult = formatter.formatSource(code);
+  } on FormatterException {
+    // If the document fails to parse, just return no edits to avoid the the
+    // use seeing edits on every save with invalid code (if LSP gains the
+    // ability to pass a context to know if the format was manually invoked
+    // we may wish to change this to return an error for that case).
+    return null;
+  }
+  final formattedSource = formattedResult.text;
+
+  if (formattedSource == unformattedSource) {
+    return null;
+  }
+
+  // We don't currently support returning "minimal" edits, we just replace
+  // entire document.
+  final end = lineInfo.getLocation(unformattedSource.length);
+  return [
+    new TextEdit(
+      new Range(new Position(0, 0), toPosition(end)),
+      formattedSource,
+    )
+  ];
+}
diff --git a/pkg/analysis_server/lib/src/operation/operation_analysis.dart b/pkg/analysis_server/lib/src/operation/operation_analysis.dart
index 32b9153..9943cbd 100644
--- a/pkg/analysis_server/lib/src/operation/operation_analysis.dart
+++ b/pkg/analysis_server/lib/src/operation/operation_analysis.dart
@@ -27,7 +27,7 @@
     return;
   }
   for (String file in files) {
-    CompilationUnit unit = server.getCachedAnalysisResult(file)?.unit;
+    CompilationUnit unit = server.getCachedResolvedUnit(file)?.unit;
     CompilationUnitElement unitElement = unit?.declaredElement;
     if (unitElement != null) {
       try {
diff --git a/pkg/analysis_server/lib/src/plugin/plugin_manager.dart b/pkg/analysis_server/lib/src/plugin/plugin_manager.dart
index 6f95fd4a..63be71f 100644
--- a/pkg/analysis_server/lib/src/plugin/plugin_manager.dart
+++ b/pkg/analysis_server/lib/src/plugin/plugin_manager.dart
@@ -12,11 +12,11 @@
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/instrumentation/instrumentation.dart';
 import 'package:analyzer/src/context/context_root.dart' as analyzer;
-import 'package:analyzer/src/generated/bazel.dart';
-import 'package:analyzer/src/generated/gn.dart';
 import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer/src/generated/workspace.dart';
 import 'package:analyzer/src/util/glob.dart';
+import 'package:analyzer/src/workspace/bazel.dart';
+import 'package:analyzer/src/workspace/gn.dart';
+import 'package:analyzer/src/workspace/workspace.dart';
 import 'package:analyzer_plugin/channel/channel.dart';
 import 'package:analyzer_plugin/protocol/protocol.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
diff --git a/pkg/analysis_server/lib/src/plugin/result_collector.dart b/pkg/analysis_server/lib/src/plugin/result_collector.dart
index c2e3274..04c3f09 100644
--- a/pkg/analysis_server/lib/src/plugin/result_collector.dart
+++ b/pkg/analysis_server/lib/src/plugin/result_collector.dart
@@ -30,7 +30,7 @@
    * the plugin that provided the partial results. The value is the partial
    * results contributed by the plugin for the file.
    */
-  Map<String, Map<String, E>> resultMap = <String, Map<String, E>>{};
+  final Map<String, Map<String, E>> resultMap = <String, Map<String, E>>{};
 
   /**
    * Initialize a newly created result manager.
diff --git a/pkg/analysis_server/lib/src/protocol_server.dart b/pkg/analysis_server/lib/src/protocol_server.dart
index 9ff7232..fc2d22a 100644
--- a/pkg/analysis_server/lib/src/protocol_server.dart
+++ b/pkg/analysis_server/lib/src/protocol_server.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -35,7 +35,21 @@
     engine.AnalysisOptions analysisOptions,
     engine.LineInfo lineInfo,
     List<engine.AnalysisError> errors) {
-  List<AnalysisError> serverErrors = <AnalysisError>[];
+  return mapEngineErrors(
+      analysisOptions, lineInfo, errors, newAnalysisError_fromEngine);
+}
+
+/**
+ * Translates engine errors through the ErrorProcessor.
+ */
+List<T> mapEngineErrors<T>(
+    engine.AnalysisOptions analysisOptions,
+    engine.LineInfo lineInfo,
+    List<engine.AnalysisError> errors,
+    T Function(engine.LineInfo lineInfo, engine.AnalysisError error,
+            [engine.ErrorSeverity errorSeverity])
+        constructor) {
+  List<T> serverErrors = <T>[];
   for (engine.AnalysisError error in errors) {
     ErrorProcessor processor =
         ErrorProcessor.getProcessor(analysisOptions, error);
@@ -44,11 +58,10 @@
       // Errors with null severity are filtered out.
       if (severity != null) {
         // Specified severities override.
-        serverErrors
-            .add(newAnalysisError_fromEngine(lineInfo, error, severity));
+        serverErrors.add(constructor(lineInfo, error, severity));
       }
     } else {
-      serverErrors.add(newAnalysisError_fromEngine(lineInfo, error));
+      serverErrors.add(constructor(lineInfo, error));
     }
   }
   return serverErrors;
@@ -163,7 +176,7 @@
  */
 Location newLocation_fromNode(engine.AstNode node) {
   engine.CompilationUnit unit =
-      node.getAncestor((node) => node is engine.CompilationUnit);
+      node.thisOrAncestorOfType<engine.CompilationUnit>();
   engine.CompilationUnitElement unitElement = unit.declaredElement;
   engine.SourceRange range = new engine.SourceRange(node.offset, node.length);
   return _locationForArgs(unitElement, range);
diff --git a/pkg/analysis_server/lib/src/provisional/completion/completion_core.dart b/pkg/analysis_server/lib/src/provisional/completion/completion_core.dart
index f100d1e..2d6adce 100644
--- a/pkg/analysis_server/lib/src/provisional/completion/completion_core.dart
+++ b/pkg/analysis_server/lib/src/provisional/completion/completion_core.dart
@@ -4,8 +4,8 @@
 
 import 'dart:async';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 
@@ -53,7 +53,7 @@
    * The analysis result for the file in which the completion is being
    * requested.
    */
-  AnalysisResult get result;
+  ResolvedUnitResult get result;
 
   /**
    * Return the source in which the completion is being requested.
diff --git a/pkg/analysis_server/lib/src/server/driver.dart b/pkg/analysis_server/lib/src/server/driver.dart
index de0500c..3f6e67d 100644
--- a/pkg/analysis_server/lib/src/server/driver.dart
+++ b/pkg/analysis_server/lib/src/server/driver.dart
@@ -9,10 +9,13 @@
 import 'package:analysis_server/protocol/protocol_constants.dart'
     show PROTOCOL_VERSION;
 import 'package:analysis_server/src/analysis_server.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+import 'package:analysis_server/src/lsp/lsp_socket_server.dart';
 import 'package:analysis_server/src/server/detachable_filesystem_manager.dart';
 import 'package:analysis_server/src/server/dev_server.dart';
 import 'package:analysis_server/src/server/diagnostic_server.dart';
 import 'package:analysis_server/src/server/http_server.dart';
+import 'package:analysis_server/src/server/lsp_stdio_server.dart';
 import 'package:analysis_server/src/server/stdio_server.dart';
 import 'package:analysis_server/src/services/completion/dart/uri_contributor.dart'
     show UriContributor;
@@ -263,6 +266,11 @@
   static const String USE_FASTA_PARSER = "use-fasta-parser";
 
   /**
+   * The name of the flag to use the Language Server Protocol (LSP).
+   */
+  static const String USE_LSP = "lsp";
+
+  /**
    * A directory to analyze in order to train an analysis server snapshot.
    */
   static const String TRAIN_USING = "train-using";
@@ -303,20 +311,14 @@
    */
   DetachableFileSystemManager detachableFileSystemManager;
 
-  SocketServer socketServer;
-
   HttpAnalysisServer httpServer;
 
   Driver();
 
   /**
    * Use the given command-line [arguments] to start this server.
-   *
-   * At least temporarily returns AnalysisServer so that consumers of the
-   * starter API can then use the server, this is done as a stopgap for the
-   * angular plugin until the official plugin API is finished.
    */
-  AnalysisServer start(List<String> arguments) {
+  void start(List<String> arguments) {
     CommandLineParser parser = _createArgParser();
     ArgResults results = parser.parse(arguments, <String, String>{});
 
@@ -330,6 +332,7 @@
     analysisServerOptions.clientVersion = results[CLIENT_VERSION];
     analysisServerOptions.cacheFolder = results[CACHE_FOLDER];
     analysisServerOptions.useFastaParser = results[USE_FASTA_PARSER];
+    analysisServerOptions.useLanguageServerProtocol = results[USE_LSP];
     analysisServerOptions.enableUXExperiment1 = results[UX_EXPERIMENT_1];
     analysisServerOptions.enableUXExperiment2 = results[UX_EXPERIMENT_2];
 
@@ -372,6 +375,54 @@
       return null;
     }
 
+    final defaultSdkPath = _getSdkPath(results);
+    final dartSdkManager = new DartSdkManager(defaultSdkPath, true);
+
+    // TODO(brianwilkerson) It would be nice to avoid creating an SDK that
+    // cannot be re-used, but the SDK is needed to create a package map provider
+    // in the case where we need to run `pub` in order to get the package map.
+    DartSdk defaultSdk = _createDefaultSdk(defaultSdkPath, true);
+    //
+    // Initialize the instrumentation service.
+    //
+    String logFilePath = results[INSTRUMENTATION_LOG_FILE];
+    if (logFilePath != null) {
+      _rollLogFiles(logFilePath, 5);
+      FileInstrumentationServer fileBasedServer =
+          new FileInstrumentationServer(logFilePath);
+      instrumentationServer = instrumentationServer != null
+          ? new MulticastInstrumentationServer(
+              [instrumentationServer, fileBasedServer])
+          : fileBasedServer;
+    }
+    InstrumentationService instrumentationService =
+        new InstrumentationService(instrumentationServer);
+    instrumentationService.logVersion(
+        results[TRAIN_USING] != null
+            ? 'training-0'
+            : _readUuid(instrumentationService),
+        analysisServerOptions.clientId,
+        analysisServerOptions.clientVersion,
+        PROTOCOL_VERSION,
+        defaultSdk.sdkVersion);
+    AnalysisEngine.instance.instrumentationService = instrumentationService;
+
+    if (analysisServerOptions.useLanguageServerProtocol) {
+      startLspServer(results, analysisServerOptions, dartSdkManager,
+          instrumentationService);
+    } else {
+      startAnalysisServer(results, analysisServerOptions, parser,
+          dartSdkManager, instrumentationService, analytics);
+    }
+  }
+
+  void startAnalysisServer(
+      ArgResults results,
+      AnalysisServerOptions analysisServerOptions,
+      CommandLineParser parser,
+      DartSdkManager dartSdkManager,
+      InstrumentationService instrumentationService,
+      telemetry.Analytics analytics) {
     String trainDirectory = results[TRAIN_USING];
     if (trainDirectory != null) {
       if (!FileSystemEntity.isDirectorySync(trainDirectory)) {
@@ -403,45 +454,6 @@
     manager.processPlugins(AnalysisEngine.instance.requiredPlugins);
     linter.registerLintRules();
 
-    String defaultSdkPath;
-    if (results[SDK_OPTION] != null) {
-      defaultSdkPath = results[SDK_OPTION];
-    } else {
-      // No path to the SDK was provided.
-      // Use FolderBasedDartSdk.defaultSdkDirectory, which will make a guess.
-      defaultSdkPath = FolderBasedDartSdk.defaultSdkDirectory(
-              PhysicalResourceProvider.INSTANCE)
-          .path;
-    }
-    // TODO(brianwilkerson) It would be nice to avoid creating an SDK that
-    // cannot be re-used, but the SDK is needed to create a package map provider
-    // in the case where we need to run `pub` in order to get the package map.
-    DartSdk defaultSdk = _createDefaultSdk(defaultSdkPath, true);
-    //
-    // Initialize the instrumentation service.
-    //
-    String logFilePath = results[INSTRUMENTATION_LOG_FILE];
-    if (logFilePath != null) {
-      _rollLogFiles(logFilePath, 5);
-      FileInstrumentationServer fileBasedServer =
-          new FileInstrumentationServer(logFilePath);
-      instrumentationServer = instrumentationServer != null
-          ? new MulticastInstrumentationServer(
-              [instrumentationServer, fileBasedServer])
-          : fileBasedServer;
-    }
-    InstrumentationService instrumentationService =
-        new InstrumentationService(instrumentationServer);
-    instrumentationService.logVersion(
-        trainDirectory != null
-            ? 'training-0'
-            : _readUuid(instrumentationService),
-        analysisServerOptions.clientId,
-        analysisServerOptions.clientVersion,
-        PROTOCOL_VERSION,
-        defaultSdk.sdkVersion);
-    AnalysisEngine.instance.instrumentationService = instrumentationService;
-
     _DiagnosticServerImpl diagnosticServer = new _DiagnosticServerImpl();
 
     // Ping analytics with our initial call.
@@ -450,9 +462,9 @@
     //
     // Create the sockets and start listening for requests.
     //
-    socketServer = new SocketServer(
+    final socketServer = new SocketServer(
         analysisServerOptions,
-        new DartSdkManager(defaultSdkPath, true),
+        dartSdkManager,
         instrumentationService,
         diagnosticServer,
         fileResolverProvider,
@@ -502,7 +514,7 @@
         exit(exitCode);
       }();
     } else {
-      _captureExceptions(instrumentationService, () {
+      _captureExceptions(socketServer, instrumentationService, () {
         StdioAnalysisServer stdioServer = new StdioAnalysisServer(socketServer);
         stdioServer.serveStdio().then((_) async {
           // TODO(brianwilkerson) Determine whether this await is necessary.
@@ -520,8 +532,28 @@
               ? null
               : httpServer.recordPrint);
     }
+  }
 
-    return socketServer.analysisServer;
+  void startLspServer(
+    ArgResults args,
+    AnalysisServerOptions analysisServerOptions,
+    DartSdkManager dartSdkManager,
+    InstrumentationService instrumentationService,
+  ) {
+    final socketServer = new LspSocketServer(
+      analysisServerOptions,
+      dartSdkManager,
+      instrumentationService,
+    );
+
+    _captureLspExceptions(socketServer, instrumentationService, () {
+      LspStdioAnalysisServer stdioServer =
+          new LspStdioAnalysisServer(socketServer);
+      stdioServer.serveStdio().then((_) async {
+        socketServer.analysisServer.shutdown();
+        exit(0);
+      });
+    });
   }
 
   /**
@@ -530,13 +562,13 @@
    * instrumentation [service]. If a [print] function is provided, then also
    * capture any data printed by the callback and redirect it to the function.
    */
-  dynamic _captureExceptions(InstrumentationService service, dynamic callback(),
+  dynamic _captureExceptions(SocketServer socketServer,
+      InstrumentationService service, dynamic callback(),
       {void print(String line)}) {
     void errorFunction(Zone self, ZoneDelegate parent, Zone zone,
         dynamic exception, StackTrace stackTrace) {
       service.logPriorityException(exception, stackTrace);
-      AnalysisServer analysisServer = socketServer.analysisServer;
-      analysisServer.sendServerErrorNotification(
+      socketServer.analysisServer.sendServerErrorNotification(
           'Captured exception', exception, stackTrace);
       throw exception;
     }
@@ -554,6 +586,33 @@
   }
 
   /**
+   * Execute the given [callback] within a zone that will capture any unhandled
+   * exceptions and both report them to the client and send them to the given
+   * instrumentation [service]. If a [print] function is provided, then also
+   * capture any data printed by the callback and redirect it to the function.
+   */
+  dynamic _captureLspExceptions(
+      // TODO(dantup): This is a copy/paste of the above with some minor changes.
+      // We should either factor these out, or if we end up with an LspDriver, put
+      // this there.
+      LspSocketServer socketServer,
+      InstrumentationService service,
+      dynamic callback()) {
+    void errorFunction(Zone self, ZoneDelegate parent, Zone zone,
+        dynamic exception, StackTrace stackTrace) {
+      service.logPriorityException(exception, stackTrace);
+      LspAnalysisServer analysisServer = socketServer.analysisServer;
+      analysisServer.sendServerErrorNotification(
+          'Captured exception', exception, stackTrace);
+      throw exception;
+    }
+
+    ZoneSpecification zoneSpecification =
+        new ZoneSpecification(handleUncaughtError: errorFunction);
+    return runZoned(callback, zoneSpecification: zoneSpecification);
+  }
+
+  /**
    * Create and return the parser used to parse the command-line arguments.
    */
   CommandLineParser _createArgParser() {
@@ -615,6 +674,8 @@
     parser.addFlag(USE_FASTA_PARSER,
         defaultsTo: true,
         help: "Whether to enable parsing via the Fasta parser");
+    parser.addFlag(USE_LSP,
+        defaultsTo: false, help: "Whether to use the Language Server Protocol");
     parser.addOption(TRAIN_USING,
         help: "Pass in a directory to analyze for purposes of training an "
             "analysis server snapshot.");
@@ -641,6 +702,18 @@
     return sdk;
   }
 
+  String _getSdkPath(ArgResults args) {
+    if (args[SDK_OPTION] != null) {
+      return args[SDK_OPTION];
+    } else {
+      // No path to the SDK was provided.
+      // Use FolderBasedDartSdk.defaultSdkDirectory, which will make a guess.
+      return FolderBasedDartSdk.defaultSdkDirectory(
+        PhysicalResourceProvider.INSTANCE,
+      ).path;
+    }
+  }
+
   /**
    * Print information about how to use the server.
    */
diff --git a/pkg/analysis_server/lib/src/server/lsp_stdio_server.dart b/pkg/analysis_server/lib/src/server/lsp_stdio_server.dart
new file mode 100644
index 0000000..016bd11
--- /dev/null
+++ b/pkg/analysis_server/lib/src/server/lsp_stdio_server.dart
@@ -0,0 +1,40 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+import 'dart:io';
+
+import 'package:analysis_server/src/lsp/channel/lsp_byte_stream_channel.dart';
+import 'package:analysis_server/src/lsp/lsp_socket_server.dart';
+
+/**
+ * Instances of the class [StdioServer] implement a simple server operating
+ * over standard input and output. The primary responsibility of this server
+ * is to split incoming messages on newlines and pass them along to the
+ * analysis server.
+ */
+class LspStdioAnalysisServer {
+  /**
+   * An object that can handle either a WebSocket connection or a connection
+   * to the client over stdio.
+   */
+  LspSocketServer socketServer;
+
+  /**
+   * Initialize a newly created stdio server.
+   */
+  LspStdioAnalysisServer(this.socketServer);
+
+  /**
+   * Begin serving requests over stdio.
+   *
+   * Return a future that will be completed when stdin closes.
+   */
+  Future serveStdio() {
+    LspByteStreamServerChannel serverChannel = new LspByteStreamServerChannel(
+        stdin, stdout, socketServer.instrumentationService);
+    socketServer.createAnalysisServer(serverChannel);
+    return serverChannel.closed;
+  }
+}
diff --git a/pkg/analysis_server/lib/src/services/completion/completion_core.dart b/pkg/analysis_server/lib/src/services/completion/completion_core.dart
index 1403f86..02e617b 100644
--- a/pkg/analysis_server/lib/src/services/completion/completion_core.dart
+++ b/pkg/analysis_server/lib/src/services/completion/completion_core.dart
@@ -4,8 +4,8 @@
 
 import 'package:analysis_server/src/provisional/completion/completion_core.dart';
 import 'package:analysis_server/src/services/completion/completion_performance.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/generated/source.dart';
 
 /**
@@ -13,7 +13,7 @@
  */
 class CompletionRequestImpl implements CompletionRequest {
   @override
-  final AnalysisResult result;
+  final ResolvedUnitResult result;
 
   @override
   final int offset;
diff --git a/pkg/analysis_server/lib/src/services/completion/completion_performance.dart b/pkg/analysis_server/lib/src/services/completion/completion_performance.dart
index 24b952f..37ee54e 100644
--- a/pkg/analysis_server/lib/src/services/completion/completion_performance.dart
+++ b/pkg/analysis_server/lib/src/services/completion/completion_performance.dart
@@ -25,11 +25,6 @@
   int get elapsedInMilliseconds =>
       operations.length > 0 ? operations.last.elapsed.inMilliseconds : 0;
 
-  int get firstNotificationInMilliseconds =>
-      _firstNotification != null ? _firstNotification.inMilliseconds : 0;
-
-  String get startTimeAndMs => '${start.millisecondsSinceEpoch} - $start';
-
   String get suggestionCount {
     if (notificationCount < 1) return '';
     if (notificationCount == 1) return '$suggestionCountFirst';
diff --git a/pkg/analysis_server/lib/src/services/completion/dart/combinator_contributor.dart b/pkg/analysis_server/lib/src/services/completion/dart/combinator_contributor.dart
index 18ba66b..fc4e494 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart/combinator_contributor.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart/combinator_contributor.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -27,7 +27,7 @@
     }
 
     // Build list of suggestions
-    var directive = node.getAncestor((parent) => parent is NamespaceDirective);
+    var directive = node.thisOrAncestorOfType<NamespaceDirective>();
     if (directive is NamespaceDirective) {
       LibraryElement library = directive.uriElement;
       if (library != null) {
diff --git a/pkg/analysis_server/lib/src/services/completion/dart/completion_manager.dart b/pkg/analysis_server/lib/src/services/completion/dart/completion_manager.dart
index 306c6b3..fe34f79 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart/completion_manager.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart/completion_manager.dart
@@ -29,11 +29,12 @@
 import 'package:analysis_server/src/services/completion/dart/type_member_contributor.dart';
 import 'package:analysis_server/src/services/completion/dart/uri_contributor.dart';
 import 'package:analysis_server/src/services/completion/dart/variable_name_contributor.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/dart/analysis/driver_based_analysis_context.dart';
 import 'package:analyzer/src/generated/engine.dart' hide AnalysisResult;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/task/api/model.dart';
@@ -178,7 +179,7 @@
  */
 class DartCompletionRequestImpl implements DartCompletionRequest {
   @override
-  final AnalysisResult result;
+  final ResolvedUnitResult result;
 
   @override
   final ResourceProvider resourceProvider;
@@ -249,7 +250,10 @@
   String get sourceContents => result.content;
 
   @override
-  SourceFactory get sourceFactory => result.sourceFactory;
+  SourceFactory get sourceFactory {
+    DriverBasedAnalysisContext context = result.session.analysisContext;
+    return context.driver.sourceFactory;
+  }
 
   /**
    * Throw [AbortCompletion] if the completion request has been aborted.
diff --git a/pkg/analysis_server/lib/src/services/completion/dart/field_formal_contributor.dart b/pkg/analysis_server/lib/src/services/completion/dart/field_formal_contributor.dart
index 2a45ee0..64ed46a 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart/field_formal_contributor.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart/field_formal_contributor.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -28,7 +28,7 @@
     // If this is a constructor declaration
     // then compute fields already referenced
     ConstructorDeclaration constructorDecl =
-        node.getAncestor((p) => p is ConstructorDeclaration);
+        node.thisOrAncestorOfType<ConstructorDeclaration>();
     if (constructorDecl == null) {
       return const <CompletionSuggestion>[];
     }
@@ -53,7 +53,7 @@
 
     // Add suggestions for fields that are not already referenced
     ClassDeclaration classDecl =
-        constructorDecl.getAncestor((p) => p is ClassDeclaration);
+        constructorDecl.thisOrAncestorOfType<ClassDeclaration>();
     List<CompletionSuggestion> suggestions = <CompletionSuggestion>[];
     for (ClassMember member in classDecl.members) {
       if (member is FieldDeclaration && !member.isStatic) {
diff --git a/pkg/analysis_server/lib/src/services/completion/dart/keyword_contributor.dart b/pkg/analysis_server/lib/src/services/completion/dart/keyword_contributor.dart
index 1db3c05..64bac8e 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart/keyword_contributor.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart/keyword_contributor.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -329,7 +329,7 @@
   @override
   visitFormalParameterList(FormalParameterList node) {
     AstNode constructorDeclaration =
-        node.getAncestor((p) => p is ConstructorDeclaration);
+        node.thisOrAncestorOfType<ConstructorDeclaration>();
     if (constructorDeclaration != null) {
       _addSuggestions([Keyword.THIS]);
     }
@@ -746,21 +746,21 @@
   }
 
   bool _inAsyncMethodOrFunction(AstNode node) {
-    FunctionBody body = node.getAncestor((n) => n is FunctionBody);
+    FunctionBody body = node.thisOrAncestorOfType<FunctionBody>();
     return body != null && body.isAsynchronous && body.star == null;
   }
 
   bool _inAsyncStarOrSyncStarMethodOrFunction(AstNode node) {
-    FunctionBody body = node.getAncestor((n) => n is FunctionBody);
+    FunctionBody body = node.thisOrAncestorOfType<FunctionBody>();
     return body != null && body.keyword != null && body.star != null;
   }
 
   bool _inCatchClause(Block node) =>
-      node.getAncestor((p) => p is CatchClause) != null;
+      node.thisOrAncestorOfType<CatchClause>() != null;
 
   bool _inClassMemberBody(AstNode node) {
     while (true) {
-      AstNode body = node.getAncestor((n) => n is FunctionBody);
+      AstNode body = node.thisOrAncestorOfType<FunctionBody>();
       if (body == null) {
         return false;
       }
@@ -773,23 +773,24 @@
   }
 
   bool _inDoLoop(AstNode node) =>
-      node.getAncestor((p) => p is DoStatement) != null;
+      node.thisOrAncestorOfType<DoStatement>() != null;
 
   bool _inForLoop(AstNode node) =>
-      node.getAncestor((p) => p is ForStatement || p is ForEachStatement) !=
+      node.thisOrAncestorMatching(
+          (p) => p is ForStatement || p is ForEachStatement) !=
       null;
 
   bool _inLoop(AstNode node) =>
       _inDoLoop(node) || _inForLoop(node) || _inWhileLoop(node);
 
   bool _inSwitch(AstNode node) =>
-      node.getAncestor((p) => p is SwitchStatement) != null;
+      node.thisOrAncestorOfType<SwitchStatement>() != null;
 
   bool _inWhileLoop(AstNode node) =>
-      node.getAncestor((p) => p is WhileStatement) != null;
+      node.thisOrAncestorOfType<WhileStatement>() != null;
 
   bool _isEntityAfterIfWithoutElse(AstNode node) {
-    Block block = node?.getAncestor((n) => n is Block);
+    Block block = node?.thisOrAncestorOfType<Block>();
     if (block == null) {
       return false;
     }
diff --git a/pkg/analysis_server/lib/src/services/completion/dart/label_contributor.dart b/pkg/analysis_server/lib/src/services/completion/dart/label_contributor.dart
index 4dead0e..d580fcd 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart/label_contributor.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart/label_contributor.dart
@@ -91,6 +91,11 @@
   }
 
   @override
+  void declaredGenericTypeAlias(GenericTypeAlias declaration) {
+    // ignored
+  }
+
+  @override
   void declaredLabel(Label label, bool isCaseLabel) {
     if (isCaseLabel ? includeCaseLabels : includeStatementLabels) {
       CompletionSuggestion suggestion = _addSuggestion(label.label);
diff --git a/pkg/analysis_server/lib/src/services/completion/dart/local_constructor_contributor.dart b/pkg/analysis_server/lib/src/services/completion/dart/local_constructor_contributor.dart
index aeda775..4d8b351 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart/local_constructor_contributor.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart/local_constructor_contributor.dart
@@ -84,6 +84,9 @@
   void declaredFunctionTypeAlias(FunctionTypeAlias declaration) {}
 
   @override
+  void declaredGenericTypeAlias(GenericTypeAlias declaration) {}
+
+  @override
   void declaredLabel(Label label, bool isCaseLabel) {}
 
   @override
diff --git a/pkg/analysis_server/lib/src/services/completion/dart/local_reference_contributor.dart b/pkg/analysis_server/lib/src/services/completion/dart/local_reference_contributor.dart
index cee82af..66a5fc6 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart/local_reference_contributor.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart/local_reference_contributor.dart
@@ -226,6 +226,20 @@
   }
 
   @override
+  void declaredGenericTypeAlias(GenericTypeAlias declaration) {
+    if (optype.includeTypeNameSuggestions) {
+      // TODO (danrubel) determine parameters and return type
+      _addLocalSuggestion_includeTypeNameSuggestions(
+          declaration.documentationComment,
+          declaration.name,
+          declaration.functionType.returnType,
+          protocol.ElementKind.FUNCTION_TYPE_ALIAS,
+          isAbstract: true,
+          isDeprecated: isDeprecated(declaration));
+    }
+  }
+
+  @override
   void declaredLabel(Label label, bool isCaseLabel) {
     // ignored
   }
diff --git a/pkg/analysis_server/lib/src/services/completion/dart/override_contributor.dart b/pkg/analysis_server/lib/src/services/completion/dart/override_contributor.dart
index 34d1ffb..8bee14b2 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart/override_contributor.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart/override_contributor.dart
@@ -9,10 +9,10 @@
 import 'package:analysis_server/src/protocol_server.dart' as protocol
     hide CompletionSuggestion, CompletionSuggestionKind;
 import 'package:analysis_server/src/provisional/completion/dart/completion_dart.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/element/inheritance_manager2.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/src/utilities/completion/completion_target.dart';
@@ -34,13 +34,15 @@
       return const <CompletionSuggestion>[];
     }
     ClassDeclaration classDecl =
-        targetId.getAncestor((p) => p is ClassDeclaration);
+        targetId.thisOrAncestorOfType<ClassDeclaration>();
     if (classDecl == null) {
       return const <CompletionSuggestion>[];
     }
 
+    // TODO(brianwilkerson) Consider making the type system visible from the
+    // request.result.
     var inheritance = new InheritanceManager2(
-        request.result.libraryElement.context.typeSystem);
+        await request.result.libraryElement.session.typeSystem);
 
     // Generate a collection of inherited members
     ClassElement classElem = classDecl.declaredElement;
@@ -68,14 +70,13 @@
    * the template will replace [targetId].
    */
   Future<DartChangeBuilder> _buildReplacementText(
-      AnalysisResult result,
+      ResolvedUnitResult result,
       SimpleIdentifier targetId,
       FunctionType signature,
       StringBuffer displayTextBuffer) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    DartChangeBuilder builder =
-        new DartChangeBuilder(result.driver.currentSession);
+    DartChangeBuilder builder = new DartChangeBuilder(result.session);
     await builder.addFileEdit(result.path, (DartFileEditBuilder builder) {
       builder.addReplacement(range.node(targetId), (DartEditBuilder builder) {
         ExecutableElement element = signature.element;
diff --git a/pkg/analysis_server/lib/src/services/completion/dart/suggestion_builder.dart b/pkg/analysis_server/lib/src/services/completion/dart/suggestion_builder.dart
index ef91fd7..e1ba6f9 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart/suggestion_builder.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart/suggestion_builder.dart
@@ -110,9 +110,9 @@
 }
 
 /**
- * Common mixin for sharing behavior
+ * Common mixin for sharing behavior.
  */
-abstract class ElementSuggestionBuilder {
+mixin ElementSuggestionBuilder {
   /**
    * A collection of completion suggestions.
    */
diff --git a/pkg/analysis_server/lib/src/services/completion/dart/type_member_contributor.dart b/pkg/analysis_server/lib/src/services/completion/dart/type_member_contributor.dart
index d0b3d04..a4e03b3 100644
--- a/pkg/analysis_server/lib/src/services/completion/dart/type_member_contributor.dart
+++ b/pkg/analysis_server/lib/src/services/completion/dart/type_member_contributor.dart
@@ -83,7 +83,7 @@
       // Determine the name of the containing method because
       // the most likely completion is a super expression with same name
       MethodDeclaration containingMethod =
-          expression.getAncestor((p) => p is MethodDeclaration);
+          expression.thisOrAncestorOfType<MethodDeclaration>();
       if (containingMethod != null) {
         SimpleIdentifier id = containingMethod.name;
         if (id != null) {
@@ -174,6 +174,17 @@
   }
 
   @override
+  void declaredGenericTypeAlias(GenericTypeAlias declaration) {
+    if (declaration.name.name == targetName) {
+      TypeAnnotation typeName = declaration.functionType.returnType;
+      if (typeName != null) {
+        typeFound = typeName.type;
+      }
+      finished();
+    }
+  }
+
+  @override
   void declaredLabel(Label label, bool isCaseLabel) {
     if (label.label.name == targetName) {
       // no type
diff --git a/pkg/analysis_server/lib/src/services/completion/postfix/postfix_completion.dart b/pkg/analysis_server/lib/src/services/completion/postfix/postfix_completion.dart
index 1a690a8..1c15d65 100644
--- a/pkg/analysis_server/lib/src/services/completion/postfix/postfix_completion.dart
+++ b/pkg/analysis_server/lib/src/services/completion/postfix/postfix_completion.dart
@@ -6,12 +6,11 @@
 
 import 'package:analysis_server/src/protocol_server.dart' hide Element;
 import 'package:analysis_server/src/services/correction/util.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
-import 'package:analyzer/error/error.dart' as engine;
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
 import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/resolver.dart';
@@ -256,21 +255,11 @@
  * The context for computing a postfix completion.
  */
 class PostfixCompletionContext {
-  final String file;
-  final LineInfo lineInfo;
+  final ResolvedUnitResult resolveResult;
   final int selectionOffset;
   final String key;
-  final AnalysisDriver driver;
-  final CompilationUnit unit;
-  final CompilationUnitElement unitElement;
-  final List<engine.AnalysisError> errors;
 
-  PostfixCompletionContext(this.file, this.lineInfo, this.selectionOffset,
-      this.key, this.driver, this.unit, this.unitElement, this.errors) {
-    if (unitElement.context == null) {
-      throw new Error(); // not reached
-    }
-  }
+  PostfixCompletionContext(this.resolveResult, this.selectionOffset, this.key);
 }
 
 /**
@@ -309,40 +298,25 @@
   AstNode node;
   PostfixCompletion completion;
   SourceChange change = new SourceChange('postfix-completion');
-  final Map<String, LinkedEditGroup> linkedPositionGroups =
-      <String, LinkedEditGroup>{};
+  final Map<String, LinkedEditGroup> linkedPositionGroups = {};
   Position exitPosition = null;
-  TypeProvider _typeProvider;
 
   PostfixCompletionProcessor(this.completionContext)
-      : utils = new CorrectionUtils(completionContext.unit);
-
-  AnalysisDriver get driver => completionContext.driver;
+      : utils = new CorrectionUtils(completionContext.resolveResult);
 
   String get eol => utils.endOfLine;
 
-  String get file => completionContext.file;
+  String get file => completionContext.resolveResult.path;
 
   String get key => completionContext.key;
 
-  LineInfo get lineInfo => completionContext.lineInfo;
+  LineInfo get lineInfo => completionContext.resolveResult.lineInfo;
 
   int get selectionOffset => completionContext.selectionOffset;
 
-  /**
-   * Return the analysis session to be used to create the change builder.
-   */
-  AnalysisSession get session => driver.currentSession;
+  AnalysisSession get session => completionContext.resolveResult.session;
 
-  Source get source => completionContext.unitElement.source;
-
-  TypeProvider get typeProvider {
-    return _typeProvider ??= unitElement.context.typeProvider;
-  }
-
-  CompilationUnit get unit => completionContext.unit;
-
-  CompilationUnitElement get unitElement => completionContext.unitElement;
+  TypeProvider get typeProvider => completionContext.resolveResult.typeProvider;
 
   Future<PostfixCompletion> compute() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
@@ -591,7 +565,8 @@
   }
 
   AstNode _selectedNode({int at: null}) =>
-      new NodeLocator(at == null ? selectionOffset : at).searchWithin(unit);
+      new NodeLocator(at == null ? selectionOffset : at)
+          .searchWithin(completionContext.resolveResult.unit);
 
   void _setCompletionFromBuilder(
       DartChangeBuilder builder, PostfixCompletionKind kind,
diff --git a/pkg/analysis_server/lib/src/services/completion/statement/statement_completion.dart b/pkg/analysis_server/lib/src/services/completion/statement/statement_completion.dart
index 929f1fe..303ddd5 100644
--- a/pkg/analysis_server/lib/src/services/completion/statement/statement_completion.dart
+++ b/pkg/analysis_server/lib/src/services/completion/statement/statement_completion.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -8,6 +8,7 @@
 import 'package:analysis_server/src/protocol_server.dart' hide Element;
 import 'package:analysis_server/src/services/correction/source_buffer.dart';
 import 'package:analysis_server/src/services/correction/util.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ -81,19 +82,10 @@
  * The context for computing a statement completion.
  */
 class StatementCompletionContext {
-  final String file;
-  final LineInfo lineInfo;
+  final ResolvedUnitResult resolveResult;
   final int selectionOffset;
-  final CompilationUnit unit;
-  final CompilationUnitElement unitElement;
-  final List<engine.AnalysisError> errors;
 
-  StatementCompletionContext(this.file, this.lineInfo, this.selectionOffset,
-      this.unit, this.unitElement, this.errors) {
-    if (unitElement.context == null) {
-      throw new Error(); // not reached; see getStatementCompletion()
-    }
-  }
+  StatementCompletionContext(this.resolveResult, this.selectionOffset);
 }
 
 /**
@@ -143,21 +135,22 @@
   Position exitPosition = null;
 
   StatementCompletionProcessor(this.statementContext)
-      : utils = new CorrectionUtils(statementContext.unit);
+      : utils = new CorrectionUtils(statementContext.resolveResult);
 
   String get eol => utils.endOfLine;
 
-  String get file => statementContext.file;
+  String get file => statementContext.resolveResult.path;
 
-  LineInfo get lineInfo => statementContext.lineInfo;
+  LineInfo get lineInfo => statementContext.resolveResult.lineInfo;
 
   int get selectionOffset => statementContext.selectionOffset;
 
-  Source get source => statementContext.unitElement.source;
+  Source get source => unitElement.source;
 
-  CompilationUnit get unit => statementContext.unit;
+  CompilationUnit get unit => statementContext.resolveResult.unit;
 
-  CompilationUnitElement get unitElement => statementContext.unitElement;
+  CompilationUnitElement get unitElement =>
+      statementContext.resolveResult.unit.declaredElement;
 
   Future<StatementCompletion> compute() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
@@ -166,8 +159,8 @@
     if (node == null) {
       return NO_COMPLETION;
     }
-    node = node
-        .getAncestor((n) => n is Statement || _isNonStatementDeclaration(n));
+    node = node.thisOrAncestorMatching(
+        (n) => n is Statement || _isNonStatementDeclaration(n));
     if (node == null) {
       return _complete_simpleEnter() ? completion : NO_COMPLETION;
     }
@@ -180,7 +173,7 @@
     if (_isEmptyStatementOrEmptyBlock(node)) {
       node = node.parent;
     }
-    for (engine.AnalysisError error in statementContext.errors) {
+    for (engine.AnalysisError error in statementContext.resolveResult.errors) {
       if (error.offset >= node.offset && error.offset <= node.end) {
         if (error.errorCode is! HintCode) {
           errors.add(error);
@@ -282,7 +275,7 @@
         return null;
       }
       AstNode expr = _selectedNode();
-      return (expr.getAncestor((n) => n is StringInterpolation) == null)
+      return (expr.thisOrAncestorOfType<StringInterpolation>() == null)
           ? expr
           : null;
     }
@@ -319,7 +312,7 @@
     expr = errorMatching(ParserErrorCode.EXPECTED_TOKEN, partialMatch: "']'") ??
         errorMatching(ScannerErrorCode.EXPECTED_TOKEN, partialMatch: "']'");
     if (expr != null) {
-      expr = expr.getAncestor((n) => n is ListLiteral);
+      expr = expr.thisOrAncestorOfType<ListLiteral>();
       if (expr != null) {
         ListLiteral lit = expr;
         if (lit.rightBracket.isSynthetic) {
@@ -861,13 +854,13 @@
     if (parenError == null) {
       return false;
     }
-    AstNode argList = _selectedNode(at: selectionOffset)
-        .getAncestor((n) => n is ArgumentList);
+    AstNode argList =
+        _selectedNode(at: selectionOffset).thisOrAncestorOfType<ArgumentList>();
     if (argList == null) {
       argList = _selectedNode(at: parenError.offset)
-          .getAncestor((n) => n is ArgumentList);
+          .thisOrAncestorOfType<ArgumentList>();
     }
-    if (argList?.getAncestor((n) => n == node) == null) {
+    if (argList?.thisOrAncestorMatching((n) => n == node) == null) {
       return false;
     }
     int previousInsertions = _lengthOfInsertions();
@@ -1107,31 +1100,12 @@
         orElse: () => null);
   }
 
-  LinkedEditGroup _getLinkedPosition(String groupId) {
-    LinkedEditGroup group = linkedPositionGroups[groupId];
-    if (group == null) {
-      group = new LinkedEditGroup.empty();
-      linkedPositionGroups[groupId] = group;
-    }
-    return group;
-  }
-
   void _insertBuilder(SourceBuilder builder, [int length = 0]) {
     {
       SourceRange range = new SourceRange(builder.offset, length);
       String text = builder.toString();
       _addReplaceEdit(range, text);
     }
-    // add linked positions
-    builder.linkedPositionGroups.forEach((String id, LinkedEditGroup group) {
-      LinkedEditGroup fixGroup = _getLinkedPosition(id);
-      group.positions.forEach((Position position) {
-        fixGroup.addPosition(position, group.length);
-      });
-      group.suggestions.forEach((LinkedEditSuggestion suggestion) {
-        fixGroup.addSuggestion(suggestion);
-      });
-    });
     // add exit position
     {
       int exitOffset = builder.exitOffset;
diff --git a/pkg/analysis_server/lib/src/services/correction/assist.dart b/pkg/analysis_server/lib/src/services/correction/assist.dart
index 772299c..0d09721 100644
--- a/pkg/analysis_server/lib/src/services/correction/assist.dart
+++ b/pkg/analysis_server/lib/src/services/correction/assist.dart
@@ -2,9 +2,28 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'package:analysis_server/plugin/edit/assist/assist_dart.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer_plugin/utilities/assist/assist.dart';
 
 /**
+ * The implementation of [DartAssistContext].
+ */
+class DartAssistContextImpl implements DartAssistContext {
+  @override
+  final ResolvedUnitResult resolveResult;
+
+  @override
+  final int selectionOffset;
+
+  @override
+  final int selectionLength;
+
+  DartAssistContextImpl(
+      this.resolveResult, this.selectionOffset, this.selectionLength);
+}
+
+/**
  * An enumeration of possible assist kinds.
  */
 class DartAssistKind {
@@ -28,10 +47,10 @@
       'dart.assist.convert.bodyToBlock', 30, "Convert to block body");
   static const CONVERT_INTO_EXPRESSION_BODY = const AssistKind(
       'dart.assist.convert.bodyToExpression', 30, "Convert to expression body");
-  static const CONVERT_INTO_FOR_INDEX = const AssistKind(
-      'dart.assist.convert.forEachToForIndex', 30, "Convert to for-index loop");
   static const CONVERT_INTO_FINAL_FIELD = const AssistKind(
       'dart.assist.convert.getterToFinalField', 30, "Convert to final field");
+  static const CONVERT_INTO_FOR_INDEX = const AssistKind(
+      'dart.assist.convert.forEachToForIndex', 30, "Convert to for-index loop");
   static const CONVERT_INTO_GENERIC_FUNCTION_SYNTAX = const AssistKind(
       'dart.assist.convert.toGenericFunctionSyntax',
       30,
@@ -96,6 +115,8 @@
       const AssistKind('dart.assist.flutter.wrap.padding', 30, "Add padding");
   static const FLUTTER_WRAP_ROW =
       const AssistKind('dart.assist.flutter.wrap.row', 30, "Wrap with Row");
+  static const FLUTTER_WRAP_STREAM_BUILDER = const AssistKind(
+      'dart.assist.flutter.wrap.streamBuilder', 30, "Wrap with StreamBuilder");
   static const IMPORT_ADD_SHOW = const AssistKind(
       'dart.assist.addShowCombinator', 30, "Add explicit 'show' combinator");
   static const INTRODUCE_LOCAL_CAST_TYPE = const AssistKind(
diff --git a/pkg/analysis_server/lib/src/services/correction/assist_internal.dart b/pkg/analysis_server/lib/src/services/correction/assist_internal.dart
index b9a6be5..b9616861 100644
--- a/pkg/analysis_server/lib/src/services/correction/assist_internal.dart
+++ b/pkg/analysis_server/lib/src/services/correction/assist_internal.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -16,12 +16,10 @@
 import 'package:analysis_server/src/utilities/flutter.dart' as flutter;
 import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/session_helper.dart';
 import 'package:analyzer/src/dart/ast/token.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
@@ -42,73 +40,36 @@
  * The computer for Dart assists.
  */
 class AssistProcessor {
-  /**
-   * The analysis driver being used to perform analysis.
-   */
-  AnalysisDriver driver;
+  final DartAssistContext context;
+  final int selectionOffset;
+  final int selectionLength;
+  final int selectionEnd;
 
-  /**
-   * The analysis session to be used to create the change builder.
-   */
-  AnalysisSession session;
-
-  /**
-   * The helper wrapper around the [session].
-   */
-  AnalysisSessionHelper sessionHelper;
-
-  Source source;
-  String file;
-
-  CompilationUnit unit;
-  CompilationUnitElement unitElement;
-
-  LibraryElement unitLibraryElement;
-
-  int selectionOffset;
-  int selectionLength;
-  int selectionEnd;
+  final AnalysisSession session;
+  final AnalysisSessionHelper sessionHelper;
+  final TypeProvider typeProvider;
+  final String file;
+  final CorrectionUtils utils;
 
   final List<Assist> assists = <Assist>[];
 
-  CorrectionUtils utils;
-
   AstNode node;
 
-  TypeProvider _typeProvider;
-
-  AssistProcessor(DartAssistContext dartContext) {
-    driver = dartContext.analysisDriver;
-    session = driver.currentSession;
-    sessionHelper = new AnalysisSessionHelper(session);
-    // source
-    source = dartContext.source;
-    file = dartContext.source.fullName;
-    // unit
-    unit = dartContext.unit;
-    unitElement = dartContext.unit.declaredElement;
-    // library
-    unitLibraryElement = resolutionMap
-        .elementDeclaredByCompilationUnit(dartContext.unit)
-        .library;
-    // selection
-    selectionOffset = dartContext.selectionOffset;
-    selectionLength = dartContext.selectionLength;
-    selectionEnd = selectionOffset + selectionLength;
-  }
+  AssistProcessor(this.context)
+      : selectionOffset = context.selectionOffset,
+        selectionLength = context.selectionLength,
+        selectionEnd = context.selectionOffset + context.selectionLength,
+        session = context.resolveResult.session,
+        sessionHelper = AnalysisSessionHelper(context.resolveResult.session),
+        typeProvider = context.resolveResult.typeProvider,
+        file = context.resolveResult.path,
+        utils = new CorrectionUtils(context.resolveResult);
 
   /**
    * Returns the EOL to use for this [CompilationUnit].
    */
   String get eol => utils.endOfLine;
 
-  TypeProvider get typeProvider {
-    if (_typeProvider == null) {
-      _typeProvider = unitElement.context.typeProvider;
-    }
-    return _typeProvider;
-  }
-
   Future<List<Assist>> compute() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
@@ -149,6 +110,7 @@
     await _addProposal_flutterRemoveWidget_multipleChildren();
     await _addProposal_flutterSwapWithChild();
     await _addProposal_flutterSwapWithParent();
+    await _addProposal_flutterWrapStreamBuilder();
     await _addProposal_flutterWrapWidget();
     await _addProposal_flutterWrapWidgets();
     await _addProposal_importAddShow();
@@ -188,28 +150,27 @@
     // isn't just "return node.getAncestor((node) => node is FunctionBody);"
     {
       FunctionExpression function =
-          node.getAncestor((node) => node is FunctionExpression);
+          node.thisOrAncestorOfType<FunctionExpression>();
       if (function != null) {
         return function.body;
       }
     }
     {
       FunctionDeclaration function =
-          node.getAncestor((node) => node is FunctionDeclaration);
+          node.thisOrAncestorOfType<FunctionDeclaration>();
       if (function != null) {
         return function.functionExpression.body;
       }
     }
     {
       ConstructorDeclaration constructor =
-          node.getAncestor((node) => node is ConstructorDeclaration);
+          node.thisOrAncestorOfType<ConstructorDeclaration>();
       if (constructor != null) {
         return constructor.body;
       }
     }
     {
-      MethodDeclaration method =
-          node.getAncestor((node) => node is MethodDeclaration);
+      MethodDeclaration method = node.thisOrAncestorOfType<MethodDeclaration>();
       if (method != null) {
         return method.body;
       }
@@ -233,9 +194,9 @@
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     DeclaredIdentifier declaredIdentifier =
-        node.getAncestor((n) => n is DeclaredIdentifier);
+        node.thisOrAncestorOfType<DeclaredIdentifier>();
     if (declaredIdentifier == null) {
-      ForEachStatement forEach = node.getAncestor((n) => n is ForEachStatement);
+      ForEachStatement forEach = node.thisOrAncestorOfType<ForEachStatement>();
       int offset = node.offset;
       if (forEach != null &&
           forEach.iterable != null &&
@@ -328,7 +289,7 @@
     AstNode node = this.node;
     // prepare VariableDeclarationList
     VariableDeclarationList declarationList =
-        node.getAncestor((node) => node is VariableDeclarationList);
+        node.thisOrAncestorOfType<VariableDeclarationList>();
     if (declarationList == null) {
       _coverageMarker();
       return;
@@ -385,33 +346,6 @@
     }
   }
 
-  Future<void> _addProposal_convertToIntLiteral() async {
-    if (node is! DoubleLiteral) {
-      _coverageMarker();
-      return;
-    }
-    DoubleLiteral literal = node;
-    int intValue;
-    try {
-      intValue = literal.value?.truncate();
-    } catch (e) {
-      // Double cannot be converted to int
-    }
-    if (intValue == null || intValue != literal.value) {
-      _coverageMarker();
-      return;
-    }
-
-    DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
-    await changeBuilder.addFileEdit(file, (DartFileEditBuilder builder) {
-      builder.addReplacement(new SourceRange(literal.offset, literal.length),
-          (DartEditBuilder builder) {
-        builder.write('$intValue');
-      });
-    });
-    _addAssistFromBuilder(changeBuilder, DartAssistKind.CONVERT_TO_INT_LITERAL);
-  }
-
   Future<void> _addProposal_assignToLocalVariable() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
@@ -469,7 +403,7 @@
 
   Future<void> _addProposal_convertClassToMixin() async {
     ClassDeclaration classDeclaration =
-        node.getAncestor((n) => n is ClassDeclaration);
+        node.thisOrAncestorOfType<ClassDeclaration>();
     if (classDeclaration == null) {
       return;
     }
@@ -524,7 +458,7 @@
   Future<void> _addProposal_convertDocumentationIntoBlock() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    Comment comment = node.getAncestor((n) => n is Comment);
+    Comment comment = node.thisOrAncestorOfType<Comment>();
     if (comment == null || !comment.isDocumentation) {
       return;
     }
@@ -557,7 +491,7 @@
   Future<void> _addProposal_convertDocumentationIntoLine() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    Comment comment = node.getAncestor((n) => n is Comment);
+    Comment comment = node.thisOrAncestorOfType<Comment>();
     if (comment == null ||
         !comment.isDocumentation ||
         comment.tokens.length != 1) {
@@ -592,13 +526,17 @@
         if (line.startsWith(prefix + ' */')) {
           break;
         }
-        String expectedPrefix = prefix + ' * ';
+        String expectedPrefix = prefix + ' *';
         if (!line.startsWith(expectedPrefix)) {
           _coverageMarker();
           return;
         }
         line = line.substring(expectedPrefix.length).trim();
-        newLines.add('$linePrefix/// $line');
+        if (line.isEmpty) {
+          newLines.add('$linePrefix///');
+        } else {
+          newLines.add('$linePrefix/// $line');
+        }
         linePrefix = eol + prefix;
       }
     }
@@ -740,13 +678,12 @@
   Future<void> _addProposal_convertPartOfToUri() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    PartOfDirective directive =
-        node.getAncestor((node) => node is PartOfDirective);
+    PartOfDirective directive = node.thisOrAncestorOfType<PartOfDirective>();
     if (directive == null || directive.libraryName == null) {
       return;
     }
-    String libraryPath = unitLibraryElement.source.fullName;
-    String partPath = unit.declaredElement.source.fullName;
+    String libraryPath = context.resolveResult.libraryElement.source.fullName;
+    String partPath = context.resolveResult.path;
     String relativePath = relative(libraryPath, from: dirname(partPath));
     String uri = new Uri.file(relativePath).toString();
     SourceRange replacementRange = range.node(directive.libraryName);
@@ -902,7 +839,7 @@
     }
     // prepare ConstructorDeclaration
     ConstructorDeclaration constructor =
-        node.getAncestor((node) => node is ConstructorDeclaration);
+        node.thisOrAncestorOfType<ConstructorDeclaration>();
     if (constructor == null) {
       return;
     }
@@ -993,7 +930,7 @@
     await null;
     // find enclosing ForEachStatement
     ForEachStatement forEachStatement =
-        node.getAncestor((n) => n is ForEachStatement);
+        node.thisOrAncestorOfType<ForEachStatement>();
     if (forEachStatement == null) {
       _coverageMarker();
       return;
@@ -1088,6 +1025,33 @@
     }
   }
 
+  Future<void> _addProposal_convertToIntLiteral() async {
+    if (node is! DoubleLiteral) {
+      _coverageMarker();
+      return;
+    }
+    DoubleLiteral literal = node;
+    int intValue;
+    try {
+      intValue = literal.value?.truncate();
+    } catch (e) {
+      // Double cannot be converted to int
+    }
+    if (intValue == null || intValue != literal.value) {
+      _coverageMarker();
+      return;
+    }
+
+    DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
+    await changeBuilder.addFileEdit(file, (DartFileEditBuilder builder) {
+      builder.addReplacement(new SourceRange(literal.offset, literal.length),
+          (DartEditBuilder builder) {
+        builder.write('$intValue');
+      });
+    });
+    _addAssistFromBuilder(changeBuilder, DartAssistKind.CONVERT_TO_INT_LITERAL);
+  }
+
   Future<void> _addProposal_convertToIsNot_onIs() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
@@ -1310,7 +1274,7 @@
     await null;
     // find FieldDeclaration
     FieldDeclaration fieldDeclaration =
-        node.getAncestor((x) => x is FieldDeclaration);
+        node.thisOrAncestorOfType<FieldDeclaration>();
     if (fieldDeclaration == null) {
       _coverageMarker();
       return;
@@ -1496,7 +1460,7 @@
 
   Future<void> _addProposal_flutterConvertToStatefulWidget() async {
     ClassDeclaration widgetClass =
-        node.getAncestor((n) => n is ClassDeclaration);
+        node.thisOrAncestorOfType<ClassDeclaration>();
     TypeName superclass = widgetClass?.extendsClause?.superclass;
     if (widgetClass == null || superclass == null) {
       _coverageMarker();
@@ -1906,6 +1870,61 @@
         parent, child, DartAssistKind.FLUTTER_SWAP_WITH_PARENT);
   }
 
+  Future<void> _addProposal_flutterWrapStreamBuilder() async {
+    Expression widgetExpr = flutter.identifyWidgetExpression(node);
+    if (widgetExpr == null) {
+      return;
+    }
+    if (flutter.isExactWidgetTypeStreamBuilder(widgetExpr.staticType)) {
+      return;
+    }
+    String widgetSrc = utils.getNodeText(widgetExpr);
+
+    var streamBuilderElement = await sessionHelper.getClass(
+      flutter.WIDGETS_LIBRARY_URI,
+      'StreamBuilder',
+    );
+    if (streamBuilderElement == null) {
+      return;
+    }
+
+    var changeBuilder = new DartChangeBuilder(session);
+    await changeBuilder.addFileEdit(file, (builder) {
+      builder.addReplacement(range.node(widgetExpr), (builder) {
+        builder.writeType(streamBuilderElement.type);
+        builder.writeln('<Object>(');
+
+        String indentOld = utils.getLinePrefix(widgetExpr.offset);
+        String indentNew1 = indentOld + utils.getIndent(1);
+        String indentNew2 = indentOld + utils.getIndent(2);
+
+        builder.write(indentNew1);
+        builder.writeln('stream: null,');
+
+        builder.write(indentNew1);
+        builder.writeln('builder: (context, snapshot) {');
+
+        widgetSrc = widgetSrc.replaceAll(
+          new RegExp("^$indentOld", multiLine: true),
+          indentNew2,
+        );
+        builder.write(indentNew2);
+        builder.write('return $widgetSrc');
+        builder.writeln(';');
+
+        builder.write(indentNew1);
+        builder.writeln('}');
+
+        builder.write(indentOld);
+        builder.write(')');
+      });
+    });
+    _addAssistFromBuilder(
+      changeBuilder,
+      DartAssistKind.FLUTTER_WRAP_STREAM_BUILDER,
+    );
+  }
+
   Future<void> _addProposal_flutterWrapWidget() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
@@ -2006,7 +2025,7 @@
     await null;
     var selectionRange = new SourceRange(selectionOffset, selectionLength);
     var analyzer = new SelectionAnalyzer(selectionRange);
-    unit.accept(analyzer);
+    context.resolveResult.unit.accept(analyzer);
 
     List<Expression> widgetExpressions = [];
     if (analyzer.hasSelectedNodes) {
@@ -2095,7 +2114,7 @@
     await null;
     // prepare ImportDirective
     ImportDirective importDirective =
-        node.getAncestor((node) => node is ImportDirective);
+        node.thisOrAncestorOfType<ImportDirective>();
     if (importDirective == null) {
       _coverageMarker();
       return;
@@ -2121,7 +2140,7 @@
         referencedNames.add(element.displayName);
       }
     });
-    unit.accept(visitor);
+    context.resolveResult.unit.accept(visitor);
     // ignore if unused
     if (referencedNames.isEmpty) {
       _coverageMarker();
@@ -2157,7 +2176,7 @@
     String prefix;
     Block targetBlock;
     {
-      Statement statement = node.getAncestor((n) => n is Statement);
+      Statement statement = node.thisOrAncestorOfType<Statement>();
       if (statement is IfStatement && statement.thenStatement is Block) {
         targetBlock = statement.thenStatement;
       } else if (statement is WhileStatement && statement.body is Block) {
@@ -2389,6 +2408,7 @@
       return;
     }
     int declOffset = element.nameOffset;
+    var unit = context.resolveResult.unit;
     AstNode declNode = new NodeLocator(declOffset).searchWithin(unit);
     if (declNode != null &&
         declNode.parent is VariableDeclaration &&
@@ -2446,7 +2466,7 @@
     await null;
     // prepare enclosing VariableDeclarationList
     VariableDeclarationList declList =
-        node.getAncestor((node) => node is VariableDeclarationList);
+        node.thisOrAncestorOfType<VariableDeclarationList>();
     if (declList != null && declList.variables.length == 1) {
     } else {
       _coverageMarker();
@@ -2515,7 +2535,7 @@
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     VariableDeclarationList declarationList =
-        node.getAncestor((n) => n is VariableDeclarationList);
+        node.thisOrAncestorOfType<VariableDeclarationList>();
     if (declarationList == null) {
       _coverageMarker();
       return;
@@ -2611,7 +2631,7 @@
     await null;
     ConditionalExpression conditional = null;
     // may be on Statement with Conditional
-    Statement statement = node.getAncestor((node) => node is Statement);
+    Statement statement = node.thisOrAncestorOfType<Statement>();
     if (statement == null) {
       _coverageMarker();
       return;
@@ -2801,7 +2821,7 @@
       return;
     }
     // prepare "if"
-    Statement statement = node.getAncestor((node) => node is Statement);
+    Statement statement = node.thisOrAncestorOfType<Statement>();
     if (statement is! IfStatement) {
       _coverageMarker();
       return;
@@ -2878,7 +2898,7 @@
     await null;
     // prepare DartVariableStatement, should be part of Block
     VariableDeclarationStatement statement =
-        node.getAncestor((node) => node is VariableDeclarationStatement);
+        node.thisOrAncestorOfType<VariableDeclarationStatement>();
     if (statement != null && statement.parent is Block) {
     } else {
       _coverageMarker();
@@ -2920,8 +2940,9 @@
     List<Statement> selectedStatements;
     {
       StatementAnalyzer selectionAnalyzer = new StatementAnalyzer(
-          unit, new SourceRange(selectionOffset, selectionLength));
-      unit.accept(selectionAnalyzer);
+          context.resolveResult,
+          new SourceRange(selectionOffset, selectionLength));
+      selectionAnalyzer.analyze();
       List<AstNode> selectedNodes = selectionAnalyzer.selectedNodes;
       // convert nodes to statements
       selectedStatements = [];
@@ -3149,7 +3170,7 @@
     utils.targetClassElement = null;
     if (target is AstNode) {
       ClassDeclaration targetClassDeclaration =
-          target.getAncestor((node) => node is ClassDeclaration);
+          target.thisOrAncestorOfType<ClassDeclaration>();
       if (targetClassDeclaration != null) {
         utils.targetClassElement = targetClassDeclaration.declaredElement;
       }
@@ -3330,13 +3351,8 @@
   }
 
   bool _setupCompute() {
-    try {
-      utils = new CorrectionUtils(unit);
-    } catch (e) {
-      throw new CancelCorrectionException(exception: e);
-    }
-
-    node = new NodeLocator(selectionOffset, selectionEnd).searchWithin(unit);
+    var locator = new NodeLocator(selectionOffset, selectionEnd);
+    node = locator.searchWithin(context.resolveResult.unit);
     return node != null;
   }
 
diff --git a/pkg/analysis_server/lib/src/services/correction/fix.dart b/pkg/analysis_server/lib/src/services/correction/fix.dart
index 21765cf..796ae49 100644
--- a/pkg/analysis_server/lib/src/services/correction/fix.dart
+++ b/pkg/analysis_server/lib/src/services/correction/fix.dart
@@ -2,11 +2,10 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
+import 'package:analysis_server/plugin/edit/fix/fix_dart.dart';
 import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/error/error.dart';
-import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/error/codes.dart';
 import 'package:analyzer/src/generated/parser.dart';
 import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
@@ -62,7 +61,6 @@
     errorCode == HintCode.UNUSED_CATCH_CLAUSE ||
     errorCode == HintCode.UNUSED_CATCH_STACK ||
     errorCode == HintCode.UNUSED_IMPORT ||
-    errorCode == HintCode.UNDEFINED_METHOD ||
     errorCode == ParserErrorCode.EXPECTED_TOKEN ||
     errorCode == ParserErrorCode.GETTER_WITH_PARAMETERS ||
     errorCode == ParserErrorCode.VAR_AS_TYPE_NAME ||
@@ -86,6 +84,23 @@
             errorCode.name == LintNames.unnecessary_this));
 
 /**
+ * The implementation of [DartFixContext].
+ */
+class DartFixContextImpl implements DartFixContext {
+  @override
+  final ResolvedUnitResult resolveResult;
+
+  @override
+  final AnalysisError error;
+
+  DartFixContextImpl(this.resolveResult, this.error);
+
+  DartFixContextImpl.from(DartFixContext other)
+      : resolveResult = other.resolveResult,
+        error = other.error;
+}
+
+/**
  * An enumeration of possible quick fix kinds.
  */
 class DartFixKind {
@@ -96,20 +111,22 @@
       appliedTogetherMessage: "Add all casts in file");
   static const ADD_FIELD_FORMAL_PARAMETERS = const FixKind(
       'ADD_FIELD_FORMAL_PARAMETERS', 70, "Add final field formal parameters");
+  static const ADD_MISSING_PARAMETER_NAMED = const FixKind(
+      'ADD_MISSING_PARAMETER_NAMED', 70, "Add named parameter '{0}'");
   static const ADD_MISSING_PARAMETER_POSITIONAL = const FixKind(
       'ADD_MISSING_PARAMETER_POSITIONAL',
       69,
       "Add optional positional parameter");
-  static const ADD_MISSING_PARAMETER_NAMED = const FixKind(
-      'ADD_MISSING_PARAMETER_NAMED', 70, "Add named parameter '{0}'");
   static const ADD_MISSING_PARAMETER_REQUIRED = const FixKind(
       'ADD_MISSING_PARAMETER_REQUIRED', 70, "Add required parameter");
   static const ADD_MISSING_REQUIRED_ARGUMENT = const FixKind(
       'ADD_MISSING_REQUIRED_ARGUMENT', 70, "Add required argument '{0}'");
   static const ADD_NE_NULL = const FixKind('ADD_NE_NULL', 50, "Add != null",
       appliedTogetherMessage: "Add != null everywhere in file");
-  static const ADD_PACKAGE_DEPENDENCY = const FixKind(
-      'ADD_PACKAGE_DEPENDENCY', 50, "Add dependency on package '{0}'");
+  static const ADD_OVERRIDE =
+      const FixKind('ADD_OVERRIDE', 50, "Add '@override' annotation");
+  static const ADD_REQUIRED =
+      const FixKind('ADD_REQUIRED', 50, "Add '@required' annotation");
   static const ADD_STATIC =
       const FixKind('ADD_STATIC', 50, "Add 'static' modifier");
   static const ADD_SUPER_CONSTRUCTOR_INVOCATION = const FixKind(
@@ -129,6 +146,8 @@
       const FixKind('CONVERT_FLUTTER_CHILD', 50, "Convert to children:");
   static const CONVERT_FLUTTER_CHILDREN =
       const FixKind('CONVERT_FLUTTER_CHILDREN', 50, "Convert to child:");
+  static const CONVERT_TO_NAMED_ARGUMENTS = const FixKind(
+      'CONVERT_TO_NAMED_ARGUMENTS', 50, "Convert to named arguments");
   static const CREATE_CLASS =
       const FixKind('CREATE_CLASS', 50, "Create class '{0}'");
   static const CREATE_CONSTRUCTOR =
@@ -157,8 +176,10 @@
       const FixKind('CREATE_MIXIN', 50, "Create mixin '{0}'");
   static const CREATE_NO_SUCH_METHOD = const FixKind(
       'CREATE_NO_SUCH_METHOD', 49, "Create 'noSuchMethod' method");
-  static const CONVERT_TO_NAMED_ARGUMENTS = const FixKind(
-      'CONVERT_TO_NAMED_ARGUMENTS', 50, "Convert to named arguments");
+  static const EXTEND_CLASS_FOR_MIXIN =
+      const FixKind('EXTEND_CLASS_FOR_MIXIN', 50, "Extend the class '{0}'");
+  static const IMPORT_ASYNC =
+      const FixKind('IMPORT_ASYNC', 49, "Import 'dart:async'");
   static const IMPORT_LIBRARY_PREFIX = const FixKind('IMPORT_LIBRARY_PREFIX',
       49, "Use imported library '{0}' with prefix '{1}'");
   static const IMPORT_LIBRARY_PROJECT1 =
@@ -173,28 +194,18 @@
       const FixKind('IMPORT_LIBRARY_SHOW', 55, "Update library '{0}' import");
   static const INSERT_SEMICOLON =
       const FixKind('INSERT_SEMICOLON', 50, "Insert ';'");
-  static const INVOKE_CONSTRUCTOR_USING_NEW = const FixKind(
-      'INVOKE_CONSTRUCTOR_USING_NEW', 50, "Invoke constructor using 'new'");
-  static const LINT_ADD_OVERRIDE =
-      const FixKind('LINT_ADD_OVERRIDE', 50, "Add '@override' annotation");
-  static const LINT_ADD_REQUIRED =
-      const FixKind('LINT_ADD_REQUIRED', 50, "Add '@required' annotation");
-  static const LINT_REMOVE_INTERPOLATION_BRACES = const FixKind(
-      'LINT_REMOVE_INTERPOLATION_BRACES',
-      50,
-      "Remove unnecessary interpolation braces");
   static const MAKE_CLASS_ABSTRACT =
       const FixKind('MAKE_CLASS_ABSTRACT', 50, "Make class '{0}' abstract");
+  static const MAKE_FIELD_NOT_FINAL =
+      const FixKind('MAKE_FIELD_NOT_FINAL', 50, "Make field '{0}' not final");
+  static const MAKE_FINAL = const FixKind('MAKE_FINAL', 50, "Make final");
   static const MOVE_TYPE_ARGUMENTS_TO_CLASS = const FixKind(
       'MOVE_TYPE_ARGUMENTS_TO_CLASS',
       50,
       "Move type arguments to after class name");
+  static const REMOVE_AWAIT = const FixKind('REMOVE_AWAIT', 50, "Remove await");
   static const REMOVE_DEAD_CODE =
       const FixKind('REMOVE_DEAD_CODE', 50, "Remove dead code");
-  static const MAKE_FIELD_NOT_FINAL =
-      const FixKind('MAKE_FIELD_NOT_FINAL', 50, "Make field '{0}' not final");
-  static const MAKE_FINAL = const FixKind('MAKE_FINAL', 50, "Make final");
-  static const REMOVE_AWAIT = const FixKind('REMOVE_AWAIT', 50, "Remove await");
   static const REMOVE_EMPTY_CATCH =
       const FixKind('REMOVE_EMPTY_CATCH', 50, "Remove empty catch clause");
   static const REMOVE_EMPTY_CONSTRUCTOR_BODY = const FixKind(
@@ -205,6 +216,10 @@
       const FixKind('REMOVE_EMPTY_STATEMENT', 50, "Remove empty statement");
   static const REMOVE_INITIALIZER =
       const FixKind('REMOVE_INITIALIZER', 50, "Remove initializer");
+  static const REMOVE_INTERPOLATION_BRACES = const FixKind(
+      'REMOVE_INTERPOLATION_BRACES',
+      50,
+      "Remove unnecessary interpolation braces");
   static const REMOVE_METHOD_DECLARATION = const FixKind(
       'REMOVE_METHOD_DECLARATION', 50, "Remove method declaration");
   static const REMOVE_PARAMETERS_IN_GETTER_DECLARATION = const FixKind(
@@ -217,10 +232,10 @@
       "Remove parentheses in getter invocation");
   static const REMOVE_THIS_EXPRESSION =
       const FixKind('REMOVE_THIS_EXPRESSION', 50, "Remove this expression");
+  static const REMOVE_TYPE_ANNOTATION =
+      const FixKind('REMOVE_TYPE_ANNOTATION', 50, "Remove type annotation");
   static const REMOVE_TYPE_ARGUMENTS =
       const FixKind('REMOVE_TYPE_ARGUMENTS', 49, "Remove type arguments");
-  static const REMOVE_TYPE_NAME =
-      const FixKind('REMOVE_TYPE_NAME', 50, "Remove type name");
   static const REMOVE_UNNECESSARY_CAST = const FixKind(
       'REMOVE_UNNECESSARY_CAST', 50, "Remove unnecessary cast",
       appliedTogetherMessage: "Remove all unnecessary casts in file");
@@ -238,12 +253,12 @@
       appliedTogetherMessage: "Replace all 'boolean' with 'bool' in file");
   static const REPLACE_FINAL_WITH_CONST = const FixKind(
       'REPLACE_FINAL_WITH_CONST', 50, "Replace 'final' with 'const'");
-  static const REPLACE_VAR_WITH_DYNAMIC = const FixKind(
-      'REPLACE_VAR_WITH_DYNAMIC', 50, "Replace 'var' with 'dynamic'");
   static const REPLACE_RETURN_TYPE_FUTURE = const FixKind(
       'REPLACE_RETURN_TYPE_FUTURE',
       50,
       "Return 'Future' from 'async' function");
+  static const REPLACE_VAR_WITH_DYNAMIC = const FixKind(
+      'REPLACE_VAR_WITH_DYNAMIC', 50, "Replace 'var' with 'dynamic'");
   static const REPLACE_WITH_BRACKETS =
       const FixKind('REPLACE_WITH_BRACKETS', 50, "Replace with { }");
   static const REPLACE_WITH_CONDITIONAL_ASSIGNMENT = const FixKind(
@@ -258,6 +273,8 @@
       "Replace the '.' with a '?.' in the invocation");
   static const REPLACE_WITH_TEAR_OFF = const FixKind(
       'REPLACE_WITH_TEAR_OFF', 50, "Replace function literal with tear-off");
+  static const UPDATE_SDK_CONSTRAINTS =
+      const FixKind('UPDATE_SDK_CONSTRAINTS', 50, "Update the SDK constraints");
   static const USE_CONST = const FixKind('USE_CONST', 50, "Change to constant");
   static const USE_EFFECTIVE_INTEGER_DIVISION = const FixKind(
       'USE_EFFECTIVE_INTEGER_DIVISION',
@@ -274,29 +291,3 @@
       appliedTogetherMessage:
           "Use != null instead of 'is! Null' everywhere in file");
 }
-
-/**
- * The implementation of [FixContext].
- */
-class FixContextImpl implements FixContext {
-  @override
-  final ResourceProvider resourceProvider;
-
-  @override
-  final AnalysisDriver analysisDriver;
-
-  @override
-  final AnalysisError error;
-
-  @override
-  final List<AnalysisError> errors;
-
-  FixContextImpl(
-      this.resourceProvider, this.analysisDriver, this.error, this.errors);
-
-  FixContextImpl.from(FixContext other)
-      : resourceProvider = other.resourceProvider,
-        analysisDriver = other.analysisDriver,
-        error = other.error,
-        errors = other.errors;
-}
diff --git a/pkg/analysis_server/lib/src/services/correction/fix_internal.dart b/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
index db40113..ff63464 100644
--- a/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
+++ b/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -23,16 +23,12 @@
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/error/error.dart';
-import 'package:analyzer/exception/exception.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/context/context_root.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/session_helper.dart';
 import 'package:analyzer/src/dart/analysis/top_level_declaration.dart';
 import 'package:analyzer/src/dart/ast/ast.dart';
 import 'package:analyzer/src/dart/ast/token.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/member.dart';
 import 'package:analyzer/src/dart/element/type.dart';
@@ -44,6 +40,7 @@
 import 'package:analyzer/src/generated/parser.dart';
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/hint/sdk_constraint_extractor.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart'
     hide AnalysisError, Element, ElementKind;
 import 'package:analyzer_plugin/src/utilities/string_utilities.dart';
@@ -58,30 +55,11 @@
 typedef bool ElementPredicate(Element argument);
 
 /**
- * The implementation of [DartFixContext].
- *
- * Clients may not extend, implement or mix-in this class.
+ * A fix contributor that provides the default set of fixes for Dart files.
  */
-class DartFixContextImpl extends FixContextImpl implements DartFixContext {
+class DartFixContributor implements FixContributor {
   @override
-  final AstProvider astProvider;
-
-  @override
-  final CompilationUnit unit;
-
-  DartFixContextImpl(FixContext fixContext, this.astProvider, this.unit)
-      : super.from(fixContext);
-
-  GetTopLevelDeclarations get getTopLevelDeclarations =>
-      analysisDriver.getTopLevelNameDeclarations;
-}
-
-/**
- * A [FixContributor] that provides the default set of fixes.
- */
-class DefaultFixContributor extends DartFixContributor {
-  @override
-  Future<List<Fix>> internalComputeFixes(DartFixContext context) async {
+  Future<List<Fix>> computeFixes(DartFixContext context) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     try {
@@ -98,8 +76,8 @@
       DartFixContext context, List<Fix> fixes) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    final AnalysisError analysisError = context.error;
-    final List<AnalysisError> allAnalysisErrors = context.errors;
+    final analysisError = context.error;
+    final allAnalysisErrors = context.resolveResult.errors.toList();
 
     // Validate inputs:
     // - return if no fixes
@@ -123,14 +101,9 @@
     // one.
     // For each fix, put the fix into the HashMap.
     for (int i = 0; i < allAnalysisErrors.length; i++) {
-      final FixContext fixContextI = new FixContextImpl(
-          context.resourceProvider,
-          context.analysisDriver,
-          allAnalysisErrors[i],
-          allAnalysisErrors);
-      final DartFixContextImpl dartFixContextI = new DartFixContextImpl(
-          fixContextI, context.astProvider, context.unit);
-      final FixProcessor processorI = new FixProcessor(dartFixContextI);
+      final FixContext fixContextI =
+          new DartFixContextImpl(context.resolveResult, allAnalysisErrors[i]);
+      final FixProcessor processorI = new FixProcessor(fixContextI);
       final List<Fix> fixesListI = await processorI.compute();
       for (Fix f in fixesListI) {
         if (!map.containsKey(f.kind)) {
@@ -188,70 +161,40 @@
 class FixProcessor {
   static const int MAX_LEVENSHTEIN_DISTANCE = 3;
 
-  ResourceProvider resourceProvider;
-  AstProvider astProvider;
-  GetTopLevelDeclarations getTopLevelDeclarations;
-  CompilationUnit unit;
-  AnalysisError error;
+  final DartFixContext context;
+  final ResourceProvider resourceProvider;
+  final AnalysisSession session;
+  final AnalysisSessionHelper sessionHelper;
+  final TypeProvider typeProvider;
+  final TypeSystem typeSystem;
 
-  /**
-   * The analysis driver being used to perform analysis.
-   */
-  AnalysisDriver driver;
+  final String file;
+  final LibraryElement unitLibraryElement;
+  final CompilationUnit unit;
+  final CorrectionUtils utils;
 
-  /**
-   * The analysis session to be used to create the change builder.
-   */
-  AnalysisSession session;
-
-  /**
-   * The helper wrapper around the [session].
-   */
-  AnalysisSessionHelper sessionHelper;
-
-  String file;
-  CompilationUnitElement unitElement;
-  Source unitSource;
-  LibraryElement unitLibraryElement;
-  File unitLibraryFile;
-  Folder unitLibraryFolder;
+  final AnalysisError error;
+  final int errorOffset;
+  final int errorLength;
 
   final List<Fix> fixes = <Fix>[];
 
-  CorrectionUtils utils;
-  int errorOffset;
-  int errorLength;
-  int errorEnd;
-  SourceRange errorRange;
   AstNode node;
   AstNode coveredNode;
 
-  TypeProvider _typeProvider;
-  TypeSystem _typeSystem;
-
-  FixProcessor(DartFixContext dartContext) {
-    resourceProvider = dartContext.resourceProvider;
-    astProvider = dartContext.astProvider;
-    getTopLevelDeclarations = dartContext.getTopLevelDeclarations;
-
-    driver = dartContext.analysisDriver;
-    session = driver.currentSession;
-    sessionHelper = new AnalysisSessionHelper(session);
-
-    // unit
-    unit = dartContext.unit;
-    unitElement = unit.declaredElement;
-    unitSource = unitElement.source;
-    // file
-    file = unitSource.fullName;
-    // library
-    unitLibraryElement = unitElement.library;
-    String unitLibraryPath = unitLibraryElement.source.fullName;
-    unitLibraryFile = resourceProvider.getFile(unitLibraryPath);
-    unitLibraryFolder = unitLibraryFile.parent;
-    // error
-    error = dartContext.error;
-  }
+  FixProcessor(this.context)
+      : resourceProvider = context.resolveResult.session.resourceProvider,
+        session = context.resolveResult.session,
+        sessionHelper = AnalysisSessionHelper(context.resolveResult.session),
+        typeProvider = context.resolveResult.typeProvider,
+        typeSystem = StrongTypeSystemImpl(context.resolveResult.typeProvider),
+        file = context.resolveResult.path,
+        unitLibraryElement = context.resolveResult.libraryElement,
+        unit = context.resolveResult.unit,
+        utils = CorrectionUtils(context.resolveResult),
+        error = context.error,
+        errorOffset = context.error.offset,
+        errorLength = context.error.length;
 
   DartType get coreTypeBool => _getCoreType('bool');
 
@@ -260,36 +203,13 @@
    */
   String get eol => utils.endOfLine;
 
-  TypeProvider get typeProvider {
-    if (_typeProvider == null) {
-      _typeProvider = unitElement.context.typeProvider;
-    }
-    return _typeProvider;
-  }
-
-  TypeSystem get typeSystem {
-    if (_typeSystem == null) {
-      _typeSystem = new StrongTypeSystemImpl(typeProvider);
-    }
-    return _typeSystem;
-  }
-
   Future<List<Fix>> compute() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    try {
-      utils = new CorrectionUtils(unit);
-    } catch (e) {
-      throw new CancelCorrectionException(exception: e);
-    }
 
-    errorOffset = error.offset;
-    errorLength = error.length;
-    errorEnd = errorOffset + errorLength;
-    errorRange = new SourceRange(errorOffset, errorLength);
     node = new NodeLocator2(errorOffset).searchWithin(unit);
-    coveredNode =
-        new NodeLocator2(errorOffset, errorEnd - 1).searchWithin(unit);
+    coveredNode = new NodeLocator2(errorOffset, errorOffset + errorLength - 1)
+        .searchWithin(unit);
     if (coveredNode == null) {
       // TODO(brianwilkerson) Figure out why the coveredNode is sometimes null.
       return fixes;
@@ -481,9 +401,6 @@
         errorCode == StaticWarningCode.UNDEFINED_NAMED_PARAMETER) {
       await _addFix_addMissingNamedArgument();
     }
-    if (errorCode == StaticTypeWarningCode.UNDEFINED_METHOD_WITH_CONSTRUCTOR) {
-      await _addFix_undefinedMethodWithContructor();
-    }
     if (errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE) {
       await _addFix_illegalAsyncReturnType();
     }
@@ -526,8 +443,7 @@
       await _addFix_importLibrary_withTopLevelVariable();
       await _addFix_importLibrary_withType();
     }
-    if (errorCode == HintCode.UNDEFINED_METHOD ||
-        errorCode == StaticTypeWarningCode.UNDEFINED_METHOD) {
+    if (errorCode == StaticTypeWarningCode.UNDEFINED_METHOD) {
       await _addFix_createClass();
       await _addFix_importLibrary_withFunction();
       await _addFix_importLibrary_withType();
@@ -556,6 +472,14 @@
       await _addFix_moveTypeArgumentsToClass();
       await _addFix_removeTypeArguments();
     }
+    if (errorCode ==
+        CompileTimeErrorCode.MIXIN_APPLICATION_NOT_IMPLEMENTED_INTERFACE) {
+      await _addFix_extendClassForMixin();
+    }
+    if (errorCode == HintCode.SDK_VERSION_ASYNC_EXPORTED_FROM_CORE) {
+      await _addFix_importAsync();
+      await _addFix_updateSdkConstraints();
+    }
     // lints
     if (errorCode is LintCode) {
       String name = errorCode.name;
@@ -642,7 +566,7 @@
   Future<void> _addFix_addAsync() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    FunctionBody body = node.getAncestor((n) => n is FunctionBody);
+    FunctionBody body = node.thisOrAncestorOfType<FunctionBody>();
     if (body != null && body.keyword == null) {
       TypeProvider typeProvider = this.typeProvider;
       DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
@@ -777,7 +701,7 @@
     AstNode argumentList = namedExpression.parent;
 
     // Prepare the invoked element.
-    var context = new _ExecutableParameters(astProvider, argumentList.parent);
+    var context = new _ExecutableParameters(sessionHelper, argumentList.parent);
     if (context == null) {
       return;
     }
@@ -829,7 +753,7 @@
     List<Expression> arguments = argumentList.arguments;
 
     // Prepare the invoked element.
-    var context = new _ExecutableParameters(astProvider, node.parent);
+    var context = new _ExecutableParameters(sessionHelper, node.parent);
     if (context == null) {
       return;
     }
@@ -902,7 +826,7 @@
         argumentList = invocation.argumentList;
       } else {
         creation =
-            invocation.getAncestor((p) => p is InstanceCreationExpression);
+            invocation.thisOrAncestorOfType<InstanceCreationExpression>();
         if (creation != null) {
           targetElement = creation.staticElement;
           argumentList = creation.argumentList;
@@ -960,7 +884,7 @@
   Future<void> _addFix_addOverrideAnnotation() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    ClassMember member = node.getAncestor((n) => n is ClassMember);
+    ClassMember member = node.thisOrAncestorOfType<ClassMember>();
     if (member == null) {
       return;
     }
@@ -981,7 +905,7 @@
           range.startLength(token, 0), '@override$eol$indent');
     });
     changeBuilder.setSelection(exitPosition);
-    _addFixFromBuilder(changeBuilder, DartFixKind.LINT_ADD_OVERRIDE);
+    _addFixFromBuilder(changeBuilder, DartFixKind.ADD_OVERRIDE);
   }
 
   Future<void> _addFix_addRequiredAnnotation() async {
@@ -991,14 +915,14 @@
     await changeBuilder.addFileEdit(file, (DartFileEditBuilder builder) {
       builder.addSimpleInsertion(node.parent.offset, '@required ');
     });
-    _addFixFromBuilder(changeBuilder, DartFixKind.LINT_ADD_REQUIRED);
+    _addFixFromBuilder(changeBuilder, DartFixKind.ADD_REQUIRED);
   }
 
   Future<void> _addFix_addStatic() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     FieldDeclaration declaration =
-        node.getAncestor((n) => n is FieldDeclaration);
+        node.thisOrAncestorOfType<FieldDeclaration>();
     DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
     await changeBuilder.addFileEdit(file, (DartFileEditBuilder builder) {
       builder.addSimpleInsertion(declaration.offset, 'static ');
@@ -1265,9 +1189,10 @@
     int offset = -1;
     String filePath;
     if (prefixElement == null) {
-      targetUnit = unitElement;
-      CompilationUnitMember enclosingMember = node.getAncestor((node) =>
-          node is CompilationUnitMember && node.parent is CompilationUnit);
+      targetUnit = unit.declaredElement;
+      CompilationUnitMember enclosingMember = node.thisOrAncestorMatching(
+          (node) =>
+              node is CompilationUnitMember && node.parent is CompilationUnit);
       if (enclosingMember == null) {
         return;
       }
@@ -1324,7 +1249,7 @@
     }
 
     ClassDeclaration classDeclaration =
-        node.getAncestor((node) => node is ClassDeclaration);
+        node.thisOrAncestorOfType<ClassDeclaration>();
     if (classDeclaration == null) {
       return;
     }
@@ -1418,12 +1343,12 @@
     }
     ClassElement targetElement = constructorElement.enclosingElement;
     // prepare location for a new constructor
-    AstNode targetTypeNode = getParsedClassElementNode(targetElement);
-    if (targetTypeNode is! ClassDeclaration) {
+    var targetNode = await _getClassDeclaration(targetElement);
+    if (targetNode == null) {
       return;
     }
     ClassMemberLocation targetLocation =
-        utils.prepareNewConstructorLocation(targetTypeNode);
+        utils.prepareNewConstructorLocation(targetNode);
     Source targetSource = targetElement.source;
     String targetFile = targetSource.fullName;
     DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
@@ -1474,12 +1399,12 @@
     }
     // prepare location for a new constructor
     ClassElement targetElement = targetType.element as ClassElement;
-    AstNode targetTypeNode = getParsedClassElementNode(targetElement);
-    if (targetTypeNode is! ClassDeclaration) {
+    var targetNode = await _getClassDeclaration(targetElement);
+    if (targetNode == null) {
       return;
     }
     ClassMemberLocation targetLocation =
-        utils.prepareNewConstructorLocation(targetTypeNode);
+        utils.prepareNewConstructorLocation(targetNode);
     String targetFile = targetElement.source.fullName;
     DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
     await changeBuilder.addFileEdit(file, (DartFileEditBuilder builder) {
@@ -1574,7 +1499,7 @@
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     ClassDeclaration targetClassNode =
-        node.getAncestor((parent) => parent is ClassDeclaration);
+        node.thisOrAncestorOfType<ClassDeclaration>();
     ClassElement targetClassElement = targetClassNode.declaredElement;
     InterfaceType superType = targetClassElement.supertype;
     String targetClassName = targetClassElement.name;
@@ -1689,14 +1614,16 @@
     }
     utils.targetClassElement = targetClassElement;
     // prepare target ClassDeclaration
-    AstNode targetTypeNode = getParsedClassElementNode(targetClassElement);
-    if (targetTypeNode is! ClassDeclaration) {
+    var targetDeclarationResult =
+        await sessionHelper.getElementDeclaration(targetClassElement);
+    if (targetDeclarationResult.node is! ClassOrMixinDeclaration) {
       return;
     }
-    ClassDeclaration targetClassNode = targetTypeNode;
+    ClassOrMixinDeclaration targetNode = targetDeclarationResult.node;
     // prepare location
     ClassMemberLocation targetLocation =
-        _getUtilsFor(targetClassNode).prepareNewFieldLocation(targetClassNode);
+        CorrectionUtils(targetDeclarationResult.resolvedUnit)
+            .prepareNewFieldLocation(targetNode);
     // build field source
     Source targetSource = targetClassElement.source;
     String targetFile = targetSource.fullName;
@@ -1724,12 +1651,12 @@
     // Ensure that we are in an initializing formal parameter.
     //
     FieldFormalParameter parameter =
-        node.getAncestor((node) => node is FieldFormalParameter);
+        node.thisOrAncestorOfType<FieldFormalParameter>();
     if (parameter == null) {
       return;
     }
     ClassDeclaration targetClassNode =
-        parameter.getAncestor((node) => node is ClassDeclaration);
+        parameter.thisOrAncestorOfType<ClassDeclaration>();
     if (targetClassNode == null) {
       return;
     }
@@ -1772,8 +1699,8 @@
             return;
           }
         } else {
-          ClassDeclaration enclosingClass =
-              node.getAncestor((node) => node is ClassDeclaration);
+          ClassOrMixinDeclaration enclosingClass =
+              node.thisOrAncestorOfType<ClassOrMixinDeclaration>();
           targetElement = enclosingClass?.declaredElement;
           argument = nameNode;
         }
@@ -1851,15 +1778,17 @@
       return;
     }
     utils.targetClassElement = targetClassElement;
-    // prepare target ClassDeclaration
-    AstNode targetTypeNode = getParsedClassElementNode(targetClassElement);
-    if (targetTypeNode is! ClassDeclaration) {
+    // prepare target ClassOrMixinDeclaration
+    var targetDeclarationResult =
+        await sessionHelper.getElementDeclaration(targetClassElement);
+    if (targetDeclarationResult.node is! ClassOrMixinDeclaration) {
       return;
     }
-    ClassDeclaration targetClassNode = targetTypeNode;
+    ClassOrMixinDeclaration targetNode = targetDeclarationResult.node;
     // prepare location
     ClassMemberLocation targetLocation =
-        _getUtilsFor(targetClassNode).prepareNewGetterLocation(targetClassNode);
+        CorrectionUtils(targetDeclarationResult.resolvedUnit)
+            .prepareNewGetterLocation(targetNode);
     // build method source
     Source targetSource = targetClassElement.source;
     String targetFile = targetSource.fullName;
@@ -1891,18 +1820,15 @@
       if (source != null) {
         String file = source.fullName;
         if (isAbsolute(file) && AnalysisEngine.isDartFileName(file)) {
-          String libName = _computeLibraryName(file);
-          try {
-            DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
-            await changeBuilder.addFileEdit(source.fullName,
-                (DartFileEditBuilder builder) {
-              builder.addSimpleInsertion(0, 'library $libName;$eol$eol');
-            });
-            _addFixFromBuilder(changeBuilder, DartFixKind.CREATE_FILE,
-                args: [source.shortName]);
-          } on AnalysisException {
-            // Ignore the exception and just don't create a fix.
-          }
+          DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
+          await changeBuilder.addFileEdit(source.fullName, (builder) {
+            builder.addSimpleInsertion(0, '// TODO Implement this library.');
+          });
+          _addFixFromBuilder(
+            changeBuilder,
+            DartFixKind.CREATE_FILE,
+            args: [source.shortName],
+          );
         }
       }
     }
@@ -1932,7 +1858,7 @@
       }
     }
     // prepare target Statement
-    Statement target = node.getAncestor((x) => x is Statement);
+    Statement target = node.thisOrAncestorOfType<Statement>();
     if (target == null) {
       return;
     }
@@ -2083,9 +2009,10 @@
     int offset = -1;
     String filePath;
     if (prefixElement == null) {
-      targetUnit = unitElement;
-      CompilationUnitMember enclosingMember = node.getAncestor((node) =>
-          node is CompilationUnitMember && node.parent is CompilationUnit);
+      targetUnit = unit.declaredElement;
+      CompilationUnitMember enclosingMember = node.thisOrAncestorMatching(
+          (node) =>
+              node is CompilationUnitMember && node.parent is CompilationUnit);
       if (enclosingMember == null) {
         return;
       }
@@ -2179,11 +2106,30 @@
     }
   }
 
+  Future<void> _addFix_extendClassForMixin() async {
+    ClassDeclaration declaration =
+        node.thisOrAncestorOfType<ClassDeclaration>();
+    if (declaration != null && declaration.extendsClause == null) {
+      String message = error.message;
+      int startIndex = message.indexOf("'", message.indexOf("'") + 1) + 1;
+      int endIndex = message.indexOf("'", startIndex);
+      String typeName = message.substring(startIndex, endIndex);
+      DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
+      await changeBuilder.addFileEdit(file, (DartFileEditBuilder builder) {
+        builder.addSimpleInsertion(
+            declaration.typeParameters?.end ?? declaration.name.end,
+            ' extends $typeName');
+      });
+      _addFixFromBuilder(changeBuilder, DartFixKind.EXTEND_CLASS_FOR_MIXIN,
+          args: [typeName]);
+    }
+  }
+
   Future<void> _addFix_illegalAsyncReturnType() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     // prepare the existing type
-    TypeAnnotation typeName = node.getAncestor((n) => n is TypeAnnotation);
+    TypeAnnotation typeName = node.thisOrAncestorOfType<TypeAnnotation>();
     TypeProvider typeProvider = this.typeProvider;
     DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
     await changeBuilder.addFileEdit(file, (DartFileEditBuilder builder) {
@@ -2192,6 +2138,11 @@
     _addFixFromBuilder(changeBuilder, DartFixKind.REPLACE_RETURN_TYPE_FUTURE);
   }
 
+  Future<void> _addFix_importAsync() async {
+    await _addFix_importLibrary(
+        DartFixKind.IMPORT_ASYNC, Uri.parse('dart:async'));
+  }
+
   Future<void> _addFix_importLibrary(FixKind kind, Uri library) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
@@ -2260,7 +2211,8 @@
         String newShowCode = 'show ${showNames.join(', ')}';
         int offset = showCombinator.offset;
         int length = showCombinator.end - offset;
-        String libraryFile = unitLibraryElement.source.fullName;
+        String libraryFile =
+            context.resolveResult.libraryElement.source.fullName;
         DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
         await changeBuilder.addFileEdit(libraryFile,
             (DartFileEditBuilder builder) {
@@ -2273,8 +2225,7 @@
     }
     // Find new top-level declarations.
     {
-      List<TopLevelDeclarationInSource> declarations =
-          await getTopLevelDeclarations(name);
+      var declarations = await session.getTopLevelDeclarations(name);
       for (TopLevelDeclarationInSource declaration in declarations) {
         // Check the kind.
         if (declaration.declaration.kind != kind2) {
@@ -2431,7 +2382,7 @@
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     ClassDeclaration enclosingClass =
-        node.getAncestor((node) => node is ClassDeclaration);
+        node.thisOrAncestorOfType<ClassDeclaration>();
     if (enclosingClass == null) {
       return;
     }
@@ -2457,9 +2408,9 @@
           !getter.variable.isSynthetic &&
           getter.variable.setter == null &&
           getter.enclosingElement is ClassElement) {
-        AstNode name =
-            await astProvider.getParsedNameForElement(getter.variable);
-        AstNode variable = name?.parent;
+        var declarationResult =
+            await sessionHelper.getElementDeclaration(getter.variable);
+        AstNode variable = declarationResult.node;
         if (variable is VariableDeclaration &&
             variable.parent is VariableDeclarationList &&
             variable.parent.parent is FieldDeclaration) {
@@ -2580,6 +2531,7 @@
     } else if (coveringNode is Block) {
       Block block = coveringNode;
       List<Statement> statementsToRemove = <Statement>[];
+      var errorRange = SourceRange(errorOffset, errorLength);
       for (Statement statement in block.statements) {
         if (range.node(statement).intersects(errorRange)) {
           statementsToRemove.add(statement);
@@ -2667,7 +2619,7 @@
     await null;
     // Retrieve the linted node.
     VariableDeclaration ancestor =
-        node.getAncestor((a) => a is VariableDeclaration);
+        node.thisOrAncestorOfType<VariableDeclaration>();
     if (ancestor == null) {
       return;
     }
@@ -2692,7 +2644,7 @@
           builder.addDeletion(range.token(right));
         });
         _addFixFromBuilder(
-            changeBuilder, DartFixKind.LINT_REMOVE_INTERPOLATION_BRACES);
+            changeBuilder, DartFixKind.REMOVE_INTERPOLATION_BRACES);
       } else {}
     }
   }
@@ -2701,7 +2653,7 @@
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     MethodDeclaration declaration =
-        node.getAncestor((node) => node is MethodDeclaration);
+        node.thisOrAncestorOfType<MethodDeclaration>();
     if (declaration != null) {
       DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
       await changeBuilder.addFileEdit(file, (DartFileEditBuilder builder) {
@@ -2759,7 +2711,7 @@
     await null;
     final thisExpression = node is ThisExpression
         ? node
-        : node.getAncestor((node) => node is ThisExpression);
+        : node.thisOrAncestorOfType<ThisExpression>();
     final parent = thisExpression?.parent;
     if (parent is PropertyAccess) {
       DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
@@ -2779,14 +2731,13 @@
   Future<void> _addFix_removeTypeAnnotation() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    final TypeAnnotation type =
-        node.getAncestor((node) => node is TypeAnnotation);
+    final TypeAnnotation type = node.thisOrAncestorOfType<TypeAnnotation>();
     if (type != null) {
       DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
       await changeBuilder.addFileEdit(file, (DartFileEditBuilder builder) {
         builder.addDeletion(range.startStart(type, type.endToken.next));
       });
-      _addFixFromBuilder(changeBuilder, DartFixKind.REMOVE_TYPE_NAME);
+      _addFixFromBuilder(changeBuilder, DartFixKind.REMOVE_TYPE_ANNOTATION);
     }
   }
 
@@ -2861,7 +2812,7 @@
     await null;
     // prepare ImportDirective
     ImportDirective importDirective =
-        node.getAncestor((node) => node is ImportDirective);
+        node.thisOrAncestorOfType<ImportDirective>();
     if (importDirective == null) {
       return;
     }
@@ -2892,11 +2843,11 @@
     List<SimpleIdentifier> references;
     Element element = identifier.staticElement;
     if (element is LocalVariableElement) {
-      AstNode root = node.getAncestor((node) => node is Block);
+      AstNode root = node.thisOrAncestorOfType<Block>();
       references = findLocalElementReferences(root, element);
     } else if (element is ParameterElement) {
       if (!element.isNamed) {
-        AstNode root = node.getAncestor((node) =>
+        AstNode root = node.thisOrAncestorMatching((node) =>
             node.parent is ClassOrMixinDeclaration ||
             node.parent is CompilationUnit);
         references = findLocalElementReferences(root, element);
@@ -2943,9 +2894,8 @@
   Future<void> _addFix_replaceWithConditionalAssignment() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    IfStatement ifStatement = node is IfStatement
-        ? node
-        : node.getAncestor((node) => node is IfStatement);
+    IfStatement ifStatement =
+        node is IfStatement ? node : node.thisOrAncestorOfType<IfStatement>();
     if (ifStatement == null) {
       return;
     }
@@ -3000,7 +2950,7 @@
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     final FunctionTypedFormalParameter functionTyped =
-        node.getAncestor((node) => node is FunctionTypedFormalParameter);
+        node.thisOrAncestorOfType<FunctionTypedFormalParameter>();
     if (functionTyped != null) {
       DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
       await changeBuilder.addFileEdit(file, (DartFileEditBuilder builder) {
@@ -3017,7 +2967,7 @@
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     final InstanceCreationExpression instanceCreation =
-        node.getAncestor((node) => node is InstanceCreationExpression);
+        node.thisOrAncestorOfType<InstanceCreationExpression>();
     final InterfaceType type = instanceCreation.staticType;
     final generics = instanceCreation.constructorName.type.typeArguments;
     DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
@@ -3041,7 +2991,7 @@
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     FunctionExpression ancestor =
-        node.getAncestor((a) => a is FunctionExpression);
+        node.thisOrAncestorOfType<FunctionExpression>();
     if (ancestor == null) {
       return;
     }
@@ -3168,8 +3118,7 @@
           new _ClosestElementFinder(name, predicate, MAX_LEVENSHTEIN_DISTANCE);
       // unqualified invocation
       if (target == null) {
-        ClassDeclaration clazz =
-            node.getAncestor((node) => node is ClassDeclaration);
+        ClassDeclaration clazz = node.thisOrAncestorOfType<ClassDeclaration>();
         if (clazz != null) {
           ClassElement classElement = clazz.declaredElement;
           _updateFinderWithClassMembers(finder, classElement);
@@ -3213,7 +3162,7 @@
     int insertOffset;
     String sourcePrefix;
     AstNode enclosingMember =
-        node.getAncestor((node) => node is CompilationUnitMember);
+        node.thisOrAncestorOfType<CompilationUnitMember>();
     insertOffset = enclosingMember.end;
     sourcePrefix = '$eol$eol';
     utils.targetClassElement = null;
@@ -3301,12 +3250,12 @@
       Element targetElement;
       bool staticModifier = false;
 
-      ClassDeclaration targetClassNode;
+      ClassOrMixinDeclaration targetClassNode;
       Expression target = invocation.realTarget;
+      CorrectionUtils utils = this.utils;
       if (target == null) {
-        targetElement = unitElement;
-        ClassMember enclosingMember =
-            node.getAncestor((node) => node is ClassMember);
+        targetElement = unit.declaredElement;
+        ClassMember enclosingMember = node.thisOrAncestorOfType<ClassMember>();
         if (enclosingMember == null) {
           // If the undefined identifier isn't inside a class member, then it
           // doesn't make sense to create a method.
@@ -3327,11 +3276,10 @@
         }
         targetElement = targetClassElement;
         // prepare target ClassDeclaration
-        AstNode targetTypeNode = getParsedClassElementNode(targetClassElement);
-        if (targetTypeNode is! ClassDeclaration) {
+        targetClassNode = await _getClassDeclaration(targetClassElement);
+        if (targetClassNode == null) {
           return;
         }
-        targetClassNode = targetTypeNode;
         // maybe static
         if (target is Identifier) {
           staticModifier =
@@ -3339,10 +3287,9 @@
                   ElementKind.CLASS;
         }
         // use different utils
-        CompilationUnitElement targetUnitElement =
-            getCompilationUnitElement(targetClassElement);
-        CompilationUnit targetUnit = getParsedUnit(targetUnitElement);
-        utils = new CorrectionUtils(targetUnit);
+        var targetPath = targetClassElement.source.fullName;
+        var targetResolveResult = await session.getResolvedUnit(targetPath);
+        utils = CorrectionUtils(targetResolveResult);
       }
       ClassMemberLocation targetLocation =
           utils.prepareNewMethodLocation(targetClassNode);
@@ -3392,22 +3339,6 @@
     }
   }
 
-  Future<void> _addFix_undefinedMethodWithContructor() async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    if (node is SimpleIdentifier && node.parent is MethodInvocation) {
-      DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
-      await changeBuilder.addFileEdit(file, (DartFileEditBuilder builder) {
-        builder.addSimpleInsertion(node.parent.offset, 'new ');
-      });
-      _addFixFromBuilder(
-          changeBuilder, DartFixKind.INVOKE_CONSTRUCTOR_USING_NEW);
-      // TODO(brianwilkerson) Figure out whether the constructor is a `const`
-      // constructor and all of the parameters are constant expressions, and
-      // suggest inserting 'const ' if so.
-    }
-  }
-
   /**
    * Here we handle cases when a constructors does not initialize all of the
    * final fields.
@@ -3474,6 +3405,53 @@
     _addFixFromBuilder(changeBuilder, DartFixKind.ADD_FIELD_FORMAL_PARAMETERS);
   }
 
+  Future<void> _addFix_updateSdkConstraints() async {
+    Context context = resourceProvider.pathContext;
+    File pubspecFile = null;
+    Folder folder = resourceProvider.getFolder(context.dirname(file));
+    while (folder != null) {
+      pubspecFile = folder.getChildAssumingFile('pubspec.yaml');
+      if (pubspecFile.exists) {
+        break;
+      }
+      pubspecFile = null;
+      folder = folder.parent;
+    }
+    if (pubspecFile == null) {
+      return;
+    }
+    SdkConstraintExtractor extractor = new SdkConstraintExtractor(pubspecFile);
+    String text = extractor.constraintText();
+    int offset = extractor.constraintOffset();
+    int length = text.length;
+    if (text == null || offset < 0) {
+      return;
+    }
+    String newText;
+    int spaceOffset = text.indexOf(' ');
+    if (spaceOffset >= 0) {
+      length = spaceOffset;
+    }
+    if (text == 'any') {
+      newText = '^2.1.0';
+    } else if (text.startsWith('^')) {
+      newText = '^2.1.0';
+    } else if (text.startsWith('>=')) {
+      newText = '>=2.1.0';
+    } else if (text.startsWith('>')) {
+      newText = '>=2.1.0';
+    }
+    if (newText == null) {
+      return;
+    }
+    DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
+    await changeBuilder.addFileEdit(pubspecFile.path,
+        (DartFileEditBuilder builder) {
+      builder.addSimpleReplacement(new SourceRange(offset, length), newText);
+    });
+    _addFixFromBuilder(changeBuilder, DartFixKind.UPDATE_SDK_CONSTRAINTS);
+  }
+
   Future<void> _addFix_useEffectiveIntegerDivision() async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
@@ -3564,7 +3542,7 @@
   Future<DartChangeBuilder> _addProposal_createFunction(
       FunctionType functionType,
       String name,
-      Source targetSource,
+      String targetFile,
       int insertOffset,
       bool isStatic,
       String prefix,
@@ -3574,7 +3552,6 @@
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     // build method source
-    String targetFile = targetSource.fullName;
     DartChangeBuilder changeBuilder = new DartChangeBuilder(session);
     await changeBuilder.addFileEdit(targetFile, (DartFileEditBuilder builder) {
       builder.addInsertion(insertOffset, (DartEditBuilder builder) {
@@ -3622,7 +3599,7 @@
         builder.write(' {$eol$prefix}');
         builder.write(sourceSuffix);
       });
-      if (targetSource == unitSource) {
+      if (targetFile == file) {
         builder.addLinkedPosition(range.node(node), 'NAME');
       }
     });
@@ -3647,13 +3624,13 @@
     DartChangeBuilder changeBuilder = await _addProposal_createFunction(
         functionType,
         name,
-        unitSource,
+        file,
         insertOffset,
         false,
         prefix,
         sourcePrefix,
         sourceSuffix,
-        unitElement);
+        unit.declaredElement);
     _addFixFromBuilder(changeBuilder, DartFixKind.CREATE_FUNCTION,
         args: [name]);
   }
@@ -3670,13 +3647,15 @@
     // prepare environment
     Source targetSource = targetClassElement.source;
     // prepare insert offset
-    ClassDeclaration targetClassNode =
-        getParsedClassElementNode(targetClassElement);
-    int insertOffset = targetClassNode.end - 1;
+    var targetNode = await _getClassDeclaration(targetClassElement);
+    if (targetNode == null) {
+      return;
+    }
+    int insertOffset = targetNode.end - 1;
     // prepare prefix
     String prefix = '  ';
     String sourcePrefix;
-    if (targetClassNode.members.isEmpty) {
+    if (targetNode.members.isEmpty) {
       sourcePrefix = '';
     } else {
       sourcePrefix = eol;
@@ -3685,7 +3664,7 @@
     DartChangeBuilder changeBuilder = await _addProposal_createFunction(
         functionType,
         name,
-        targetSource,
+        targetSource.fullName,
         insertOffset,
         _inStaticContext(),
         prefix,
@@ -3696,48 +3675,15 @@
   }
 
   /**
-   * Computes the name of the library at the given [path].
-   * See https://www.dartlang.org/articles/style-guide/#names for conventions.
+   * Returns the [ClassOrMixinDeclaration] for the given [element].
    */
-  String _computeLibraryName(String path) {
-    Context pathContext = resourceProvider.pathContext;
-    String packageFolder = _computePackageFolder(path);
-    if (packageFolder == null) {
-      return pathContext.basenameWithoutExtension(path);
+  Future<ClassOrMixinDeclaration> _getClassDeclaration(
+      ClassElement element) async {
+    var result = await sessionHelper.getElementDeclaration(element);
+    if (result.node is ClassOrMixinDeclaration) {
+      return result.node;
     }
-    String packageName = pathContext.basename(packageFolder);
-    String relPath = pathContext.relative(path, from: packageFolder);
-    List<String> relPathParts = pathContext.split(relPath);
-    if (relPathParts.isNotEmpty) {
-      if (relPathParts[0].toLowerCase() == 'lib') {
-        relPathParts.removeAt(0);
-      }
-      if (relPathParts.isNotEmpty) {
-        String nameWithoutExt = pathContext.withoutExtension(relPathParts.last);
-        relPathParts[relPathParts.length - 1] = nameWithoutExt;
-      }
-    }
-    return packageName + '.' + relPathParts.join('.');
-  }
-
-  /**
-   * Returns the path of the folder which contains the given [path].
-   */
-  String _computePackageFolder(String path) {
-    Context pathContext = resourceProvider.pathContext;
-    String pubspecFolder = dirname(path);
-    while (true) {
-      if (resourceProvider
-          .getResource(pathContext.join(pubspecFolder, 'pubspec.yaml'))
-          .exists) {
-        return pubspecFolder;
-      }
-      String pubspecFolderNew = pathContext.dirname(pubspecFolder);
-      if (pubspecFolderNew == pubspecFolder) {
-        return null;
-      }
-      pubspecFolder = pubspecFolderNew;
-    }
+    return null;
   }
 
   /**
@@ -3774,26 +3720,6 @@
   }
 
   /**
-   * Return the correction utilities that should be used when creating an edit
-   * in the compilation unit containing the given [node].
-   */
-  CorrectionUtils _getUtilsFor(AstNode node) {
-    CompilationUnit targetUnit =
-        node.getAncestor((node) => node is CompilationUnit);
-    CompilationUnitElement targetUnitElement = targetUnit?.declaredElement;
-    CorrectionUtils realUtils = utils;
-    if (targetUnitElement != utils.unit.declaredElement) {
-      realUtils = new CorrectionUtils(targetUnit);
-      ClassDeclaration targetClass =
-          node.getAncestor((node) => node is ClassDeclaration);
-      if (targetClass != null) {
-        realUtils.targetClassElement = targetClass.declaredElement;
-      }
-    }
-    return realUtils;
-  }
-
-  /**
    * Returns an expected [DartType] of [expression], may be `null` if cannot be
    * inferred.
    */
@@ -3924,17 +3850,15 @@
    */
   bool _inStaticContext() {
     // constructor initializer cannot reference "this"
-    if (node.getAncestor((node) => node is ConstructorInitializer) != null) {
+    if (node.thisOrAncestorOfType<ConstructorInitializer>() != null) {
       return true;
     }
     // field initializer cannot reference "this"
-    if (node.getAncestor((node) => node is FieldDeclaration) != null) {
+    if (node.thisOrAncestorOfType<FieldDeclaration>() != null) {
       return true;
     }
     // static method
-    MethodDeclaration method = node.getAncestor((node) {
-      return node is MethodDeclaration;
-    });
+    MethodDeclaration method = node.thisOrAncestorOfType<MethodDeclaration>();
     return method != null && method.isStatic;
   }
 
@@ -3999,24 +3923,24 @@
   }
 
   /**
-   * Return `true` if the [source] can be imported into [unitLibraryFile].
+   * Return `true` if the [source] can be imported into current library.
    */
   bool _isSourceVisibleToLibrary(Source source) {
     String path = source.fullName;
 
-    ContextRoot contextRoot = driver.contextRoot;
+    var contextRoot = context.resolveResult.session.analysisContext.contextRoot;
     if (contextRoot == null) {
       return true;
     }
 
     // We don't want to use private libraries of other packages.
     if (source.uri.isScheme('package') && _isLibSrcPath(path)) {
-      return resourceProvider.pathContext.isWithin(contextRoot.root, path);
+      return contextRoot.root.contains(path);
     }
 
     // We cannot use relative URIs to reference files outside of our package.
     if (source.uri.isScheme('file')) {
-      return resourceProvider.pathContext.isWithin(contextRoot.root, path);
+      return contextRoot.root.contains(path);
     }
 
     return true;
@@ -4181,14 +4105,15 @@
  * [ExecutableElement], its parameters, and operations on them.
  */
 class _ExecutableParameters {
-  final AstProvider astProvider;
+  final AnalysisSessionHelper sessionHelper;
   final ExecutableElement executable;
 
   final List<ParameterElement> required = [];
   final List<ParameterElement> optionalPositional = [];
   final List<ParameterElement> named = [];
 
-  factory _ExecutableParameters(AstProvider astProvider, AstNode invocation) {
+  factory _ExecutableParameters(
+      AnalysisSessionHelper sessionHelper, AstNode invocation) {
     Element element;
     if (invocation is InstanceCreationExpression) {
       element = invocation.staticElement;
@@ -4196,14 +4121,14 @@
     if (invocation is MethodInvocation) {
       element = invocation.methodName.staticElement;
     }
-    if (element is ExecutableElement) {
-      return new _ExecutableParameters._(astProvider, element);
+    if (element is ExecutableElement && !element.isSynthetic) {
+      return new _ExecutableParameters._(sessionHelper, element);
     } else {
       return null;
     }
   }
 
-  _ExecutableParameters._(this.astProvider, this.executable) {
+  _ExecutableParameters._(this.sessionHelper, this.executable) {
     for (var parameter in executable.parameters) {
       if (parameter.isNotOptional) {
         required.add(parameter);
@@ -4222,10 +4147,8 @@
    * be found.
    */
   Future<FormalParameterList> getParameterList() async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    var name = await astProvider.getParsedNameForElement(executable);
-    AstNode targetDeclaration = name?.parent;
+    var result = await sessionHelper.getElementDeclaration(executable);
+    var targetDeclaration = result.node;
     if (targetDeclaration is ConstructorDeclaration) {
       return targetDeclaration.parameters;
     } else if (targetDeclaration is FunctionDeclaration) {
@@ -4242,10 +4165,9 @@
    * or `null` is cannot be found.
    */
   Future<FormalParameter> getParameterNode(ParameterElement element) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    var name = await astProvider.getParsedNameForElement(element);
-    for (AstNode node = name; node != null; node = node.parent) {
+    var result = await sessionHelper.getElementDeclaration(element);
+    var declaration = result.node;
+    for (AstNode node = declaration; node != null; node = node.parent) {
       if (node is FormalParameter && node.parent is FormalParameterList) {
         return node;
       }
diff --git a/pkg/analysis_server/lib/src/services/correction/name_suggestion.dart b/pkg/analysis_server/lib/src/services/correction/name_suggestion.dart
index 46fa120..e8da43f 100644
--- a/pkg/analysis_server/lib/src/services/correction/name_suggestion.dart
+++ b/pkg/analysis_server/lib/src/services/correction/name_suggestion.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -8,7 +8,7 @@
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer_plugin/src/utilities/string_utilities.dart';
 
-List<String> _KNOWN_METHOD_NAME_PREFIXES = ['get', 'is', 'to'];
+final List<String> _KNOWN_METHOD_NAME_PREFIXES = ['get', 'is', 'to'];
 
 /**
  * Returns all variants of names by removing leading words one by one.
@@ -37,7 +37,7 @@
   if (isMethod) {
     // If we're in a build() method, use 'build' as the name prefix.
     MethodDeclaration method =
-        assignedExpression.getAncestor((n) => n is MethodDeclaration);
+        assignedExpression.thisOrAncestorOfType<MethodDeclaration>();
     if (method != null) {
       String enclosingName = method.name?.name;
       if (enclosingName != null && enclosingName.startsWith('build')) {
diff --git a/pkg/analysis_server/lib/src/services/correction/namespace.dart b/pkg/analysis_server/lib/src/services/correction/namespace.dart
index 1419922..a3bdd84 100644
--- a/pkg/analysis_server/lib/src/services/correction/namespace.dart
+++ b/pkg/analysis_server/lib/src/services/correction/namespace.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -18,15 +18,6 @@
 }
 
 /**
- * Returns the namespace of the given [ExportElement].
- */
-Map<String, Element> getExportNamespaceForDirective(ExportElement exp) {
-  Namespace namespace =
-      new NamespaceBuilder().createExportNamespaceForDirective(exp);
-  return namespace.definedNames;
-}
-
-/**
  * Returns the export namespace of the given [LibraryElement].
  */
 Map<String, Element> getExportNamespaceForLibrary(LibraryElement library) {
@@ -45,8 +36,7 @@
   if (parent is ImportDirective) {
     return parent.element;
   }
-  ImportElementInfo info = internal_getImportElementInfo(prefixNode);
-  return info?.element;
+  return internal_getImportElementInfo(prefixNode);
 }
 
 /**
@@ -130,15 +120,13 @@
 }
 
 /**
- * Returns the [ImportElementInfo] with the [ImportElement] that is referenced
- * by [prefixNode] with a [PrefixElement], maybe `null`.
+ * Returns the [ImportElement] that is referenced by [prefixNode] with a
+ * [PrefixElement], maybe `null`.
  */
-ImportElementInfo internal_getImportElementInfo(SimpleIdentifier prefixNode) {
-  ImportElementInfo info = new ImportElementInfo();
+ImportElement internal_getImportElementInfo(SimpleIdentifier prefixNode) {
   // prepare environment
   AstNode parent = prefixNode.parent;
-  CompilationUnit unit =
-      prefixNode.getAncestor((node) => node is CompilationUnit);
+  CompilationUnit unit = prefixNode.thisOrAncestorOfType<CompilationUnit>();
   LibraryElement libraryElement =
       resolutionMap.elementDeclaredByCompilationUnit(unit).library;
   // prepare used element
@@ -147,14 +135,12 @@
     PrefixedIdentifier prefixed = parent;
     if (prefixed.prefix == prefixNode) {
       usedElement = prefixed.staticElement;
-      info.periodEnd = prefixed.period.end;
     }
   }
   if (parent is MethodInvocation) {
     MethodInvocation invocation = parent;
     if (invocation.target == prefixNode) {
       usedElement = invocation.methodName.staticElement;
-      info.periodEnd = invocation.operator.end;
     }
   }
   // we need used Element
@@ -164,12 +150,8 @@
   // find ImportElement
   String prefix = prefixNode.name;
   Map<ImportElement, Set<Element>> importElementsMap = {};
-  info.element = internal_getImportElement(
+  return internal_getImportElement(
       libraryElement, prefix, usedElement, importElementsMap);
-  if (info.element == null) {
-    return null;
-  }
-  return info;
 }
 
 /**
@@ -178,5 +160,4 @@
  */
 class ImportElementInfo {
   ImportElement element;
-  int periodEnd;
 }
diff --git a/pkg/analysis_server/lib/src/services/correction/selection_analyzer.dart b/pkg/analysis_server/lib/src/services/correction/selection_analyzer.dart
index 9b026bd..3b9b505 100644
--- a/pkg/analysis_server/lib/src/services/correction/selection_analyzer.dart
+++ b/pkg/analysis_server/lib/src/services/correction/selection_analyzer.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -10,7 +10,7 @@
 /**
  * A visitor for visiting [AstNode]s covered by a selection [SourceRange].
  */
-class SelectionAnalyzer extends GeneralizingAstVisitor<Object> {
+class SelectionAnalyzer extends GeneralizingAstVisitor<void> {
   final SourceRange selection;
 
   AstNode _coveringNode;
@@ -57,19 +57,6 @@
   }
 
   /**
-   * Returns the [SourceRange] which covers selected [AstNode]s, may be `null`
-   * if there are no [AstNode]s under the selection.
-   */
-  SourceRange get selectedNodeRange {
-    if (_selectedNodes == null || _selectedNodes.isEmpty) {
-      return null;
-    }
-    AstNode firstNode = _selectedNodes[0];
-    AstNode lastNode = _selectedNodes[_selectedNodes.length - 1];
-    return range.startEnd(firstNode, lastNode);
-  }
-
-  /**
    * Return the [AstNode]s fully covered by the selection [SourceRange].
    */
   List<AstNode> get selectedNodes {
@@ -114,7 +101,7 @@
   }
 
   @override
-  Object visitNode(AstNode node) {
+  void visitNode(AstNode node) {
     SourceRange nodeRange = range.node(node);
     if (selection.covers(nodeRange)) {
       if (isFirstNode) {
@@ -122,21 +109,20 @@
       } else {
         handleNextSelectedNode(node);
       }
-      return null;
+      return;
     } else if (selection.coveredBy(nodeRange)) {
       _coveringNode = node;
       node.visitChildren(this);
-      return null;
+      return;
     } else if (selection.startsIn(nodeRange)) {
       handleSelectionStartsIn(node);
       node.visitChildren(this);
-      return null;
+      return;
     } else if (selection.endsIn(nodeRange)) {
       handleSelectionEndsIn(node);
       node.visitChildren(this);
-      return null;
+      return;
     }
     // no intersection
-    return null;
   }
 }
diff --git a/pkg/analysis_server/lib/src/services/correction/sort_members.dart b/pkg/analysis_server/lib/src/services/correction/sort_members.dart
index 1bd8aef8..04baf5f 100644
--- a/pkg/analysis_server/lib/src/services/correction/sort_members.dart
+++ b/pkg/analysis_server/lib/src/services/correction/sort_members.dart
@@ -20,6 +20,8 @@
     new _PriorityItem(false, _MemberKind.UNIT_ACCESSOR, true),
     new _PriorityItem(false, _MemberKind.UNIT_FUNCTION, false),
     new _PriorityItem(false, _MemberKind.UNIT_FUNCTION, true),
+    new _PriorityItem(false, _MemberKind.UNIT_GENERIC_TYPE_ALIAS, false),
+    new _PriorityItem(false, _MemberKind.UNIT_GENERIC_TYPE_ALIAS, true),
     new _PriorityItem(false, _MemberKind.UNIT_FUNCTION_TYPE, false),
     new _PriorityItem(false, _MemberKind.UNIT_FUNCTION_TYPE, true),
     new _PriorityItem(false, _MemberKind.UNIT_CLASS, false),
@@ -83,21 +85,20 @@
   }
 
   /**
-   * Sorts all members of all [ClassDeclaration]s.
+   * Sorts all members of all [ClassOrMixinDeclaration]s.
    */
   void _sortClassesMembers() {
     for (CompilationUnitMember unitMember in unit.declarations) {
-      if (unitMember is ClassDeclaration) {
-        ClassDeclaration classDeclaration = unitMember;
-        _sortClassMembers(classDeclaration);
+      if (unitMember is ClassOrMixinDeclaration) {
+        _sortClassMembers(unitMember);
       }
     }
   }
 
   /**
-   * Sorts all members of the given [ClassDeclaration].
+   * Sorts all members of the given [classDeclaration].
    */
-  void _sortClassMembers(ClassDeclaration classDeclaration) {
+  void _sortClassMembers(ClassOrMixinDeclaration classDeclaration) {
     List<_MemberInfo> members = <_MemberInfo>[];
     for (ClassMember member in classDeclaration.members) {
       _MemberKind kind = null;
@@ -272,7 +273,7 @@
     for (CompilationUnitMember member in unit.declarations) {
       _MemberKind kind = null;
       String name = null;
-      if (member is ClassDeclaration) {
+      if (member is ClassOrMixinDeclaration) {
         kind = _MemberKind.UNIT_CLASS;
         name = member.name.name;
       }
@@ -305,6 +306,10 @@
         kind = _MemberKind.UNIT_FUNCTION_TYPE;
         name = member.name.name;
       }
+      if (member is GenericTypeAlias) {
+        kind = _MemberKind.UNIT_GENERIC_TYPE_ALIAS;
+        name = member.name.name;
+      }
       if (member is TopLevelVariableDeclaration) {
         TopLevelVariableDeclaration variableDeclaration = member;
         List<VariableDeclaration> variables =
@@ -458,14 +463,16 @@
   static const UNIT_FUNCTION_MAIN = const _MemberKind('UNIT_FUNCTION_MAIN', 0);
   static const UNIT_ACCESSOR = const _MemberKind('UNIT_ACCESSOR', 1);
   static const UNIT_FUNCTION = const _MemberKind('UNIT_FUNCTION', 2);
-  static const UNIT_FUNCTION_TYPE = const _MemberKind('UNIT_FUNCTION_TYPE', 3);
-  static const UNIT_CLASS = const _MemberKind('UNIT_CLASS', 4);
-  static const UNIT_VARIABLE_CONST = const _MemberKind('UNIT_VARIABLE', 5);
-  static const UNIT_VARIABLE = const _MemberKind('UNIT_VARIABLE', 6);
-  static const CLASS_ACCESSOR = const _MemberKind('CLASS_ACCESSOR', 7);
-  static const CLASS_CONSTRUCTOR = const _MemberKind('CLASS_CONSTRUCTOR', 8);
-  static const CLASS_FIELD = const _MemberKind('CLASS_FIELD', 9);
-  static const CLASS_METHOD = const _MemberKind('CLASS_METHOD', 10);
+  static const UNIT_GENERIC_TYPE_ALIAS =
+      const _MemberKind('UNIT_GENERIC_TYPE_ALIAS', 3);
+  static const UNIT_FUNCTION_TYPE = const _MemberKind('UNIT_FUNCTION_TYPE', 4);
+  static const UNIT_CLASS = const _MemberKind('UNIT_CLASS', 5);
+  static const UNIT_VARIABLE_CONST = const _MemberKind('UNIT_VARIABLE', 6);
+  static const UNIT_VARIABLE = const _MemberKind('UNIT_VARIABLE', 7);
+  static const CLASS_ACCESSOR = const _MemberKind('CLASS_ACCESSOR', 8);
+  static const CLASS_CONSTRUCTOR = const _MemberKind('CLASS_CONSTRUCTOR', 9);
+  static const CLASS_FIELD = const _MemberKind('CLASS_FIELD', 10);
+  static const CLASS_METHOD = const _MemberKind('CLASS_METHOD', 11);
 
   final String name;
   final int ordinal;
diff --git a/pkg/analysis_server/lib/src/services/correction/source_buffer.dart b/pkg/analysis_server/lib/src/services/correction/source_buffer.dart
index 24d6848..a414cd5 100644
--- a/pkg/analysis_server/lib/src/services/correction/source_buffer.dart
+++ b/pkg/analysis_server/lib/src/services/correction/source_buffer.dart
@@ -2,9 +2,6 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer_plugin/protocol/protocol_common.dart';
-
 /**
  * Helper for building Dart source with linked positions.
  */
@@ -13,18 +10,10 @@
   final int offset;
   final StringBuffer _buffer = new StringBuffer();
 
-  final Map<String, LinkedEditGroup> linkedPositionGroups =
-      <String, LinkedEditGroup>{};
-  LinkedEditGroup _currentLinkedPositionGroup;
-  int _currentPositionStart;
   int _exitOffset;
 
   SourceBuilder(this.file, this.offset);
 
-  SourceBuilder.buffer()
-      : file = null,
-        offset = 0;
-
   /**
    * Returns the exit offset, maybe `null` if not set.
    */
@@ -37,15 +26,6 @@
 
   int get length => _buffer.length;
 
-  void addSuggestion(LinkedEditSuggestionKind kind, String value) {
-    var suggestion = new LinkedEditSuggestion(value, kind);
-    _currentLinkedPositionGroup.addSuggestion(suggestion);
-  }
-
-  void addSuggestions(LinkedEditSuggestionKind kind, List<String> values) {
-    values.forEach((value) => addSuggestion(kind, value));
-  }
-
   /**
    * Appends [s] to the buffer.
    */
@@ -55,45 +35,12 @@
   }
 
   /**
-   * Ends position started using [startPosition].
-   */
-  void endPosition() {
-    assert(_currentLinkedPositionGroup != null);
-    _addPosition();
-    _currentLinkedPositionGroup = null;
-  }
-
-  /**
    * Marks the current offset as an "exit" one.
    */
   void setExitOffset() {
     _exitOffset = _buffer.length;
   }
 
-  /**
-   * Marks start of a new linked position for the group with the given ID.
-   */
-  void startPosition(String id) {
-    assert(_currentLinkedPositionGroup == null);
-    _currentLinkedPositionGroup = linkedPositionGroups[id];
-    if (_currentLinkedPositionGroup == null) {
-      _currentLinkedPositionGroup = new LinkedEditGroup.empty();
-      linkedPositionGroups[id] = _currentLinkedPositionGroup;
-    }
-    _currentPositionStart = _buffer.length;
-  }
-
   @override
   String toString() => _buffer.toString();
-
-  /**
-   * Adds position location [SourceRange] using current fields.
-   */
-  void _addPosition() {
-    int start = offset + _currentPositionStart;
-    int end = offset + _buffer.length;
-    int length = end - start;
-    Position position = new Position(file, start);
-    _currentLinkedPositionGroup.addPosition(position, length);
-  }
 }
diff --git a/pkg/analysis_server/lib/src/services/correction/statement_analyzer.dart b/pkg/analysis_server/lib/src/services/correction/statement_analyzer.dart
index 3a5b1af..db39ca8 100644
--- a/pkg/analysis_server/lib/src/services/correction/statement_analyzer.dart
+++ b/pkg/analysis_server/lib/src/services/correction/statement_analyzer.dart
@@ -6,9 +6,9 @@
 import 'package:analysis_server/src/services/correction/selection_analyzer.dart';
 import 'package:analysis_server/src/services/correction/status.dart';
 import 'package:analysis_server/src/services/correction/util.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
-import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/dart/scanner/reader.dart';
 import 'package:analyzer/src/dart/scanner/scanner.dart';
 import 'package:analyzer/src/generated/source.dart';
@@ -37,11 +37,12 @@
  * Analyzer to check if a selection covers a valid set of statements of AST.
  */
 class StatementAnalyzer extends SelectionAnalyzer {
-  final CompilationUnit unit;
+  final ResolvedUnitResult resolveResult;
 
   final RefactoringStatus _status = new RefactoringStatus();
 
-  StatementAnalyzer(this.unit, SourceRange selection) : super(selection);
+  StatementAnalyzer(this.resolveResult, SourceRange selection)
+      : super(selection);
 
   /**
    * Returns the [RefactoringStatus] result of selection checking.
@@ -49,6 +50,13 @@
   RefactoringStatus get status => _status;
 
   /**
+   * Analyze the selection, compute [status] and nodes.
+   */
+  void analyze() {
+    resolveResult.unit.accept(this);
+  }
+
+  /**
    * Records fatal error with given message and [Location].
    */
   void invalidSelection(String message, [Location context]) {
@@ -68,7 +76,7 @@
     {
       int selectionStart = selection.offset;
       int selectionEnd = selection.end;
-      List<SourceRange> commentRanges = getCommentRanges(unit);
+      List<SourceRange> commentRanges = getCommentRanges(resolveResult.unit);
       for (SourceRange commentRange in commentRanges) {
         if (commentRange.contains(selectionStart)) {
           invalidSelection("Selection begins inside a comment.");
@@ -204,8 +212,7 @@
    * Returns `true` if there are [Token]s in the given [SourceRange].
    */
   bool _hasTokens(SourceRange range) {
-    CompilationUnitElement unitElement = unit.declaredElement;
-    String fullText = unitElement.context.getContents(unitElement.source).data;
+    String fullText = resolveResult.content;
     String rangeText = fullText.substring(range.offset, range.end);
     return _getTokens(rangeText).isNotEmpty;
   }
diff --git a/pkg/analysis_server/lib/src/services/correction/strings.dart b/pkg/analysis_server/lib/src/services/correction/strings.dart
index 33a4c6a..125fc14 100644
--- a/pkg/analysis_server/lib/src/services/correction/strings.dart
+++ b/pkg/analysis_server/lib/src/services/correction/strings.dart
@@ -12,11 +12,6 @@
 const int CHAR_DOLLAR = 0x24;
 
 /**
- * "."
- */
-const int CHAR_DOT = 0x2E;
-
-/**
  * "_"
  */
 const int CHAR_UNDERSCORE = 0x5F;
@@ -98,39 +93,6 @@
 }
 
 /**
- * Returns the number of characters common to the end of [a] and the start
- * of [b].
- */
-int findCommonOverlap(String a, String b) {
-  int a_length = a.length;
-  int b_length = b.length;
-  // all empty
-  if (a_length == 0 || b_length == 0) {
-    return 0;
-  }
-  // truncate
-  if (a_length > b_length) {
-    a = a.substring(a_length - b_length);
-  } else if (a_length < b_length) {
-    b = b.substring(0, a_length);
-  }
-  int text_length = min(a_length, b_length);
-  // the worst case
-  if (a == b) {
-    return text_length;
-  }
-  // increase common length one by one
-  int length = 0;
-  while (length < text_length) {
-    if (a.codeUnitAt(text_length - 1 - length) != b.codeUnitAt(length)) {
-      break;
-    }
-    length++;
-  }
-  return length;
-}
-
-/**
  * Return the number of characters common to the start of [a] and [b].
  */
 int findCommonPrefix(String a, String b) {
@@ -193,13 +155,6 @@
   return isSpace(c) || isEOL(c);
 }
 
-String remove(String str, String remove) {
-  if (isEmpty(str) || isEmpty(remove)) {
-    return str;
-  }
-  return str.replaceAll(remove, '');
-}
-
 String removeEnd(String str, String remove) {
   if (isEmpty(str) || isEmpty(remove)) {
     return str;
@@ -233,24 +188,6 @@
 }
 
 /**
- * Gets the substring after the last occurrence of a separator.
- * The separator is not returned.
- */
-String substringAfterLast(String str, String separator) {
-  if (isEmpty(str)) {
-    return str;
-  }
-  if (isEmpty(separator)) {
-    return '';
-  }
-  int pos = str.lastIndexOf(separator);
-  if (pos == -1) {
-    return str;
-  }
-  return str.substring(pos + separator.length);
-}
-
-/**
  * Information about a single replacement that should be made to convert the
  * "old" string to the "new" one.
  */
diff --git a/pkg/analysis_server/lib/src/services/correction/util.dart b/pkg/analysis_server/lib/src/services/correction/util.dart
index f517e04..9ea11e0 100644
--- a/pkg/analysis_server/lib/src/services/correction/util.dart
+++ b/pkg/analysis_server/lib/src/services/correction/util.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -7,6 +7,8 @@
 import 'package:analysis_server/src/protocol_server.dart'
     show doSourceChange_addElementEdit;
 import 'package:analysis_server/src/services/correction/strings.dart';
+import 'package:analyzer/dart/analysis/results.dart';
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
@@ -15,7 +17,6 @@
 import 'package:analyzer/src/dart/ast/utilities.dart';
 import 'package:analyzer/src/dart/scanner/reader.dart';
 import 'package:analyzer/src/dart/scanner/scanner.dart';
-import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart'
     show SourceChange, SourceEdit;
@@ -27,16 +28,11 @@
  * Adds edits to the given [change] that ensure that all the [libraries] are
  * imported into the given [targetLibrary].
  */
-void addLibraryImports(pathos.Context pathContext, SourceChange change,
-    LibraryElement targetLibrary, Set<Source> libraries) {
-  CorrectionUtils libUtils;
-  try {
-    CompilationUnitElement unitElement = targetLibrary.definingCompilationUnit;
-    CompilationUnit unitAst = getParsedUnit(unitElement);
-    libUtils = new CorrectionUtils(unitAst);
-  } catch (e) {
-    throw new CancelCorrectionException(exception: e);
-  }
+Future<void> addLibraryImports(AnalysisSession session, SourceChange change,
+    LibraryElement targetLibrary, Set<Source> libraries) async {
+  var libraryPath = targetLibrary.source.fullName;
+  var resolveResult = await session.getResolvedUnit(libraryPath);
+  var libUtils = new CorrectionUtils(resolveResult);
   String eol = libUtils.endOfLine;
   // Prepare information about existing imports.
   LibraryDirective libraryDirective;
@@ -46,14 +42,14 @@
       libraryDirective = directive;
     } else if (directive is ImportDirective) {
       importDirectives.add(new _ImportDirectiveInfo(
-          directive.uriContent, directive.offset, directive.end));
+          directive.uri.stringValue, directive.offset, directive.end));
     }
   }
 
   // Prepare all URIs to import.
   List<String> uriList = libraries
-      .map((library) =>
-          getLibrarySourceUri(pathContext, targetLibrary, library.uri))
+      .map((library) => getLibrarySourceUri(
+          session.resourceProvider.pathContext, targetLibrary, library.uri))
       .toList();
   uriList.sort((a, b) => a.compareTo(b));
 
@@ -235,12 +231,12 @@
 }
 
 /**
- * If the given [AstNode] is in a [ClassDeclaration], returns the
+ * If the given [AstNode] is in a [ClassOrMixinDeclaration], returns the
  * [ClassElement]. Otherwise returns `null`.
  */
 ClassElement getEnclosingClassElement(AstNode node) {
-  ClassDeclaration enclosingClassNode =
-      node.getAncestor((node) => node is ClassDeclaration);
+  ClassOrMixinDeclaration enclosingClassNode =
+      node.thisOrAncestorOfType<ClassOrMixinDeclaration>();
   if (enclosingClassNode != null) {
     return enclosingClassNode.declaredElement;
   }
@@ -470,40 +466,6 @@
 }
 
 /**
- * Returns a parsed [AstNode] for the given [classElement].
- *
- * The resulting AST structure may or may not be resolved.
- */
-AstNode getParsedClassElementNode(ClassElement classElement) {
-  CompilationUnitElement unitElement = getCompilationUnitElement(classElement);
-  CompilationUnit unit = getParsedUnit(unitElement);
-  int offset = classElement.nameOffset;
-  AstNode classNameNode = new NodeLocator(offset).searchWithin(unit);
-  if (classElement.isEnum) {
-    return classNameNode.getAncestor((node) => node is EnumDeclaration);
-  } else {
-    return classNameNode.getAncestor(
-        (node) => node is ClassDeclaration || node is ClassTypeAlias);
-  }
-}
-
-/**
- * Returns a parsed [CompilationUnit] for the given [unitElement].
- *
- * The resulting AST structure may or may not be resolved.
- * If it is not resolved, then at least the given [unitElement] will be set.
- */
-CompilationUnit getParsedUnit(CompilationUnitElement unitElement) {
-  AnalysisContext context = unitElement.context;
-  Source source = unitElement.source;
-  CompilationUnit unit = context.parseCompilationUnit(source);
-  if (unit.declaredElement == null) {
-    unit.element = unitElement;
-  }
-  return unit;
-}
-
-/**
  * If given [node] is name of qualified property extraction, returns target from
  * which this property is extracted, otherwise `null`.
  */
@@ -641,6 +603,8 @@
 
 class CorrectionUtils {
   final CompilationUnit unit;
+  final LibraryElement _library;
+  final String _buffer;
 
   /**
    * The [ClassElement] the generated code is inserted to, so we can decide if
@@ -650,19 +614,12 @@
 
   ExecutableElement targetExecutableElement;
 
-  LibraryElement _library;
-  String _buffer;
   String _endOfLine;
 
-  CorrectionUtils(this.unit, {String buffer}) {
-    CompilationUnitElement unitElement = unit.declaredElement;
-    AnalysisContext context = unitElement.context;
-    if (context == null) {
-      throw new CancelCorrectionException();
-    }
-    this._library = unitElement.library;
-    this._buffer = buffer ?? context.getContents(unitElement.source).data;
-  }
+  CorrectionUtils(ResolvedUnitResult result)
+      : unit = result.unit,
+        _library = result.libraryElement,
+        _buffer = result.content;
 
   /**
    * Returns the EOL to use for this [CompilationUnit].
@@ -690,7 +647,7 @@
   Set<String> findPossibleLocalVariableConflicts(int offset) {
     Set<String> conflicts = new Set<String>();
     AstNode enclosingNode = findNode(offset);
-    Block enclosingBlock = enclosingNode.getAncestor((node) => node is Block);
+    Block enclosingBlock = enclosingNode.thisOrAncestorOfType<Block>();
     if (enclosingBlock != null) {
       _CollectReferencedUnprefixedNames visitor =
           new _CollectReferencedUnprefixedNames();
@@ -1091,7 +1048,7 @@
    * Return `true` if the given [classDeclaration] has open '{' and close '}'
    * at the same line, e.g. `class X {}`.
    */
-  bool isClassWithEmptyBody(ClassDeclaration classDeclaration) {
+  bool isClassWithEmptyBody(ClassOrMixinDeclaration classDeclaration) {
     return getLineThis(classDeclaration.leftBracket.offset) ==
         getLineThis(classDeclaration.rightBracket.offset);
   }
@@ -1110,7 +1067,7 @@
   }
 
   ClassMemberLocation prepareNewClassMemberLocation(
-      ClassDeclaration classDeclaration,
+      ClassOrMixinDeclaration classDeclaration,
       bool shouldSkip(ClassMember existingMember)) {
     String indent = getIndent(1);
     // Find the last target member.
@@ -1145,13 +1102,13 @@
   }
 
   ClassMemberLocation prepareNewFieldLocation(
-      ClassDeclaration classDeclaration) {
+      ClassOrMixinDeclaration classDeclaration) {
     return prepareNewClassMemberLocation(
         classDeclaration, (member) => member is FieldDeclaration);
   }
 
   ClassMemberLocation prepareNewGetterLocation(
-      ClassDeclaration classDeclaration) {
+      ClassOrMixinDeclaration classDeclaration) {
     return prepareNewClassMemberLocation(
         classDeclaration,
         (member) =>
@@ -1161,7 +1118,7 @@
   }
 
   ClassMemberLocation prepareNewMethodLocation(
-      ClassDeclaration classDeclaration) {
+      ClassOrMixinDeclaration classDeclaration) {
     return prepareNewClassMemberLocation(
         classDeclaration,
         (member) =>
diff --git a/pkg/analysis_server/lib/src/services/kythe/kythe_visitors.dart b/pkg/analysis_server/lib/src/services/kythe/kythe_visitors.dart
index 23c804b..24d7722 100644
--- a/pkg/analysis_server/lib/src/services/kythe/kythe_visitors.dart
+++ b/pkg/analysis_server/lib/src/services/kythe/kythe_visitors.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -14,8 +14,8 @@
 import 'package:analyzer/dart/element/visitor.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/dart/element/inheritance_manager2.dart';
-import 'package:analyzer/src/generated/bazel.dart';
-import 'package:analyzer/src/generated/gn.dart';
+import 'package:analyzer/src/workspace/bazel.dart';
+import 'package:analyzer/src/workspace/gn.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart'
     show KytheEntry, KytheVName;
 
@@ -803,7 +803,7 @@
     // Most simple identifiers are "ref" edges.  In cases some cases, there may
     // be other ref/* edges.
 
-    if (node.getAncestor((node) => node is CommentReference) != null) {
+    if (node.thisOrAncestorOfType<CommentReference>() != null) {
       // The identifier is in a comment, add just the "ref" edge.
       _handleRefEdge(
         node.staticElement,
@@ -1106,7 +1106,7 @@
 /// This class is meant to be a mixin to concrete visitor methods to walk the
 /// [Element] or [AstNode]s produced by the Dart Analyzer to output Kythe
 /// [KytheEntry] protos.
-abstract class OutputUtils {
+mixin OutputUtils {
   /// A set of [String]s which have already had a name [KytheVName] created.
   final Set<String> nameNodes = new Set<String>();
 
diff --git a/pkg/analysis_server/lib/src/services/refactoring/convert_getter_to_method.dart b/pkg/analysis_server/lib/src/services/refactoring/convert_getter_to_method.dart
index 61dd338..94010f7 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/convert_getter_to_method.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/convert_getter_to_method.dart
@@ -10,10 +10,11 @@
 import 'package:analysis_server/src/services/refactoring/refactoring_internal.dart';
 import 'package:analysis_server/src/services/search/hierarchy.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
+import 'package:analyzer/src/dart/analysis/session_helper.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/utilities/range_factory.dart';
 
@@ -23,13 +24,13 @@
 class ConvertGetterToMethodRefactoringImpl extends RefactoringImpl
     implements ConvertGetterToMethodRefactoring {
   final SearchEngine searchEngine;
-  final AstProvider astProvider;
+  final AnalysisSession session;
   final PropertyAccessorElement element;
 
   SourceChange change;
 
   ConvertGetterToMethodRefactoringImpl(
-      this.searchEngine, this.astProvider, this.element);
+      this.searchEngine, this.session, this.element);
 
   @override
   String get refactoringName => 'Convert Getter To Method';
@@ -92,8 +93,9 @@
     // prepare "get" keyword
     Token getKeyword = null;
     {
-      AstNode name = await astProvider.getParsedNameForElement(element);
-      AstNode declaration = name?.parent;
+      var sessionHelper = AnalysisSessionHelper(session);
+      var result = await sessionHelper.getElementDeclaration(element);
+      var declaration = result.node;
       if (declaration is MethodDeclaration) {
         getKeyword = declaration.propertyKeyword;
       } else if (declaration is FunctionDeclaration) {
diff --git a/pkg/analysis_server/lib/src/services/refactoring/convert_method_to_getter.dart b/pkg/analysis_server/lib/src/services/refactoring/convert_method_to_getter.dart
index 4f38b26..e7bc247 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/convert_method_to_getter.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/convert_method_to_getter.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -12,8 +12,8 @@
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/src/dart/analysis/session_helper.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/utilities/range_factory.dart';
 
@@ -23,13 +23,13 @@
 class ConvertMethodToGetterRefactoringImpl extends RefactoringImpl
     implements ConvertMethodToGetterRefactoring {
   final SearchEngine searchEngine;
-  final AstProvider astProvider;
+  final AnalysisSessionHelper sessionHelper;
   final ExecutableElement element;
 
   SourceChange change;
 
-  ConvertMethodToGetterRefactoringImpl(
-      this.searchEngine, this.astProvider, this.element);
+  ConvertMethodToGetterRefactoringImpl(this.searchEngine, this.element)
+      : sessionHelper = AnalysisSessionHelper(element.session);
 
   @override
   String get refactoringName => 'Convert Method To Getter';
@@ -100,8 +100,8 @@
     // prepare parameters
     FormalParameterList parameters;
     {
-      AstNode name = await astProvider.getParsedNameForElement(element);
-      AstNode declaration = name?.parent;
+      var result = await sessionHelper.getElementDeclaration(element);
+      var declaration = result.node;
       if (declaration is MethodDeclaration) {
         parameters = declaration.parameters;
       } else if (declaration is FunctionDeclaration) {
@@ -133,11 +133,11 @@
       // prepare invocation
       MethodInvocation invocation;
       {
-        CompilationUnit refUnit =
-            await astProvider.getParsedUnitForElement(refElement);
-        AstNode refNode =
-            new NodeLocator(refRange.offset).searchWithin(refUnit);
-        invocation = refNode.getAncestor((node) => node is MethodInvocation);
+        var resolvedUnit =
+            await sessionHelper.getResolvedUnitByElement(refElement);
+        var refUnit = resolvedUnit.unit;
+        var refNode = new NodeLocator(refRange.offset).searchWithin(refUnit);
+        invocation = refNode.thisOrAncestorOfType<MethodInvocation>();
       }
       // we need invocation
       if (invocation != null) {
diff --git a/pkg/analysis_server/lib/src/services/refactoring/extract_local.dart b/pkg/analysis_server/lib/src/services/refactoring/extract_local.dart
index cf9cd10..d8e0c05 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/extract_local.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/extract_local.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -31,7 +31,7 @@
  */
 class ExtractLocalRefactoringImpl extends RefactoringImpl
     implements ExtractLocalRefactoring {
-  final ResolveResult resolveResult;
+  final ResolvedUnitResult resolveResult;
   final int selectionOffset;
   final int selectionLength;
   SourceRange selectionRange;
@@ -56,7 +56,7 @@
   ExtractLocalRefactoringImpl(
       this.resolveResult, this.selectionOffset, this.selectionLength) {
     selectionRange = new SourceRange(selectionOffset, selectionLength);
-    utils = new CorrectionUtils(unit, buffer: resolveResult.content);
+    utils = new CorrectionUtils(resolveResult);
   }
 
   String get file => resolveResult.path;
@@ -319,7 +319,7 @@
     // into this block.  If it has an expression body, we can convert it into
     // the block body first.
     if (coveringNode == null ||
-        coveringNode.getAncestor((node) => node is FunctionBody) == null) {
+        coveringNode.thisOrAncestorOfType<FunctionBody>() == null) {
       return new RefactoringStatus.fatal(
           'An expression inside a function must be selected '
           'to activate this refactoring.');
@@ -414,7 +414,7 @@
       return expressionBody;
     }
     // single Statement
-    AstNode target = commonParent.getAncestor((node) => node is Statement);
+    AstNode target = commonParent.thisOrAncestorOfType<Statement>();
     while (target.parent is! Block) {
       target = target.parent;
     }
@@ -601,7 +601,7 @@
   }
 }
 
-class _OccurrencesVisitor extends GeneralizingAstVisitor<Object> {
+class _OccurrencesVisitor extends GeneralizingAstVisitor<void> {
   final ExtractLocalRefactoringImpl ref;
   final List<SourceRange> occurrences;
   final String selectionSource;
@@ -609,24 +609,24 @@
   _OccurrencesVisitor(this.ref, this.occurrences, this.selectionSource);
 
   @override
-  Object visitBinaryExpression(BinaryExpression node) {
+  void visitBinaryExpression(BinaryExpression node) {
     if (!_hasStatements(node)) {
       _tryToFindOccurrenceFragments(node);
-      return null;
+      return;
     }
-    return super.visitBinaryExpression(node);
+    super.visitBinaryExpression(node);
   }
 
   @override
-  Object visitExpression(Expression node) {
+  void visitExpression(Expression node) {
     if (ref._isExtractable(range.node(node))) {
       _tryToFindOccurrence(node);
     }
-    return super.visitExpression(node);
+    super.visitExpression(node);
   }
 
   @override
-  Object visitStringLiteral(StringLiteral node) {
+  void visitStringLiteral(StringLiteral node) {
     if (ref.stringLiteralPart != null) {
       int length = ref.stringLiteralPart.length;
       String value = ref.utils.getNodeText(node);
@@ -641,9 +641,9 @@
         SourceRange range = new SourceRange(start, length);
         occurrences.add(range);
       }
-      return null;
+      return;
     }
-    return visitExpression(node);
+    visitExpression(node);
   }
 
   void _addOccurrence(SourceRange range) {
diff --git a/pkg/analysis_server/lib/src/services/refactoring/extract_method.dart b/pkg/analysis_server/lib/src/services/refactoring/extract_method.dart
index 6969c41..bce5382 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/extract_method.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/extract_method.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -23,8 +23,8 @@
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
+import 'package:analyzer/src/dart/analysis/session_helper.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
 import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/resolver.dart' show ExitDetector;
 import 'package:analyzer/src/generated/resolver.dart';
@@ -74,8 +74,7 @@
       'execution flows exit. Semantics may not be preserved.';
 
   final SearchEngine searchEngine;
-  final AstProvider astProvider;
-  final ResolveResult resolveResult;
+  final ResolvedUnitResult resolveResult;
   final int selectionOffset;
   final int selectionLength;
   SourceRange selectionRange;
@@ -119,11 +118,10 @@
   List<_Occurrence> _occurrences = [];
   bool _staticContext = false;
 
-  ExtractMethodRefactoringImpl(this.searchEngine, this.astProvider,
-      this.resolveResult, this.selectionOffset, this.selectionLength) {
+  ExtractMethodRefactoringImpl(this.searchEngine, this.resolveResult,
+      this.selectionOffset, this.selectionLength) {
     selectionRange = new SourceRange(selectionOffset, selectionLength);
-    utils =
-        new CorrectionUtils(resolveResult.unit, buffer: resolveResult.content);
+    utils = new CorrectionUtils(resolveResult);
   }
 
   @override
@@ -138,8 +136,7 @@
   String get refactoringName {
     AstNode node =
         new NodeLocator(selectionOffset).searchWithin(resolveResult.unit);
-    if (node != null &&
-        node.getAncestor((node) => node is ClassDeclaration) != null) {
+    if (node != null && node.thisOrAncestorOfType<ClassDeclaration>() != null) {
       return 'Extract Method';
     }
     return 'Extract Function';
@@ -394,8 +391,8 @@
       }
     }
     // done
-    addLibraryImports(resolveResult.session.resourceProvider.pathContext,
-        change, resolveResult.libraryElement, librariesToImport);
+    await addLibraryImports(resolveResult.session, change,
+        resolveResult.libraryElement, librariesToImport);
     return change;
   }
 
@@ -454,8 +451,8 @@
     // method of class
     if (parent is ClassDeclaration) {
       ClassElement classElement = parent.declaredElement;
-      return validateCreateMethod(
-          searchEngine, astProvider, classElement, name);
+      return validateCreateMethod(searchEngine,
+          AnalysisSessionHelper(resolveResult.session), classElement, name);
     }
     // OK
     return new Future<RefactoringStatus>.value(result);
@@ -477,23 +474,20 @@
       }
     }
 
-    _ExtractMethodAnalyzer selectionAnalyzer =
-        new _ExtractMethodAnalyzer(resolveResult.unit, selectionRange);
-    resolveResult.unit.accept(selectionAnalyzer);
+    var analyzer = new _ExtractMethodAnalyzer(resolveResult, selectionRange);
+    analyzer.analyze();
     // May be a fatal error.
     {
-      if (selectionAnalyzer.status.hasFatalError) {
-        return selectionAnalyzer.status;
+      if (analyzer.status.hasFatalError) {
+        return analyzer.status;
       }
     }
 
-    List<AstNode> selectedNodes = selectionAnalyzer.selectedNodes;
+    List<AstNode> selectedNodes = analyzer.selectedNodes;
 
     // If no selected nodes, extract the smallest covering expression.
     if (selectedNodes.isEmpty) {
-      for (var node = selectionAnalyzer.coveringNode;
-          node != null;
-          node = node.parent) {
+      for (var node = analyzer.coveringNode; node != null; node = node.parent) {
         if (node is Statement) {
           break;
         }
@@ -586,7 +580,7 @@
     // Check for the parameter list of a FunctionExpression.
     {
       FunctionExpression function =
-          node?.getAncestor((n) => n is FunctionExpression);
+          node?.thisOrAncestorOfType<FunctionExpression>();
       if (function != null &&
           function.parameters != null &&
           range.node(function.parameters).contains(offset)) {
@@ -655,7 +649,7 @@
     // change indentation
     if (_selectionFunctionExpression != null) {
       AstNode baseNode =
-          _selectionFunctionExpression.getAncestor((node) => node is Statement);
+          _selectionFunctionExpression.thisOrAncestorOfType<Statement>();
       if (baseNode != null) {
         String baseIndent = utils.getNodePrefix(baseNode);
         String targetIndent = utils.getNodePrefix(_parentMember);
@@ -826,9 +820,8 @@
    * Checks if it is OK to extract the node with the given [SourceRange].
    */
   bool _isExtractable(SourceRange range) {
-    _ExtractMethodAnalyzer analyzer =
-        new _ExtractMethodAnalyzer(resolveResult.unit, range);
-    utils.unit.accept(analyzer);
+    var analyzer = new _ExtractMethodAnalyzer(resolveResult, range);
+    analyzer.analyze();
     return analyzer.status.isOK;
   }
 
@@ -929,8 +922,9 @@
  * [SelectionAnalyzer] for [ExtractMethodRefactoringImpl].
  */
 class _ExtractMethodAnalyzer extends StatementAnalyzer {
-  _ExtractMethodAnalyzer(CompilationUnit unit, SourceRange selection)
-      : super(unit, selection);
+  _ExtractMethodAnalyzer(
+      ResolvedUnitResult resolveResult, SourceRange selection)
+      : super(resolveResult, selection);
 
   @override
   void handleNextSelectedNode(AstNode node) {
@@ -1120,7 +1114,7 @@
   }
 }
 
-class _InitializeOccurrencesVisitor extends GeneralizingAstVisitor<Object> {
+class _InitializeOccurrencesVisitor extends GeneralizingAstVisitor<void> {
   final ExtractMethodRefactoringImpl ref;
   final _SourcePattern selectionPattern;
   final Map<String, String> patternToSelectionName;
@@ -1131,50 +1125,50 @@
       this.ref, this.selectionPattern, this.patternToSelectionName);
 
   @override
-  Object visitBlock(Block node) {
+  void visitBlock(Block node) {
     if (ref._selectionStatements != null) {
       _visitStatements(node.statements);
     }
-    return super.visitBlock(node);
+    super.visitBlock(node);
   }
 
   @override
-  Object visitConstructorInitializer(ConstructorInitializer node) {
+  void visitConstructorInitializer(ConstructorInitializer node) {
     forceStatic = true;
     try {
-      return super.visitConstructorInitializer(node);
+      super.visitConstructorInitializer(node);
     } finally {
       forceStatic = false;
     }
   }
 
   @override
-  Object visitExpression(Expression node) {
+  void visitExpression(Expression node) {
     if (ref._selectionFunctionExpression != null ||
         ref._selectionExpression != null &&
             node.runtimeType == ref._selectionExpression.runtimeType) {
       SourceRange nodeRange = range.node(node);
       _tryToFindOccurrence(nodeRange);
     }
-    return super.visitExpression(node);
+    super.visitExpression(node);
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     forceStatic = node.isStatic;
     try {
-      return super.visitMethodDeclaration(node);
+      super.visitMethodDeclaration(node);
     } finally {
       forceStatic = false;
     }
   }
 
   @override
-  Object visitSwitchMember(SwitchMember node) {
+  void visitSwitchMember(SwitchMember node) {
     if (ref._selectionStatements != null) {
       _visitStatements(node.statements);
     }
-    return super.visitSwitchMember(node);
+    super.visitSwitchMember(node);
   }
 
   /**
diff --git a/pkg/analysis_server/lib/src/services/refactoring/extract_widget.dart b/pkg/analysis_server/lib/src/services/refactoring/extract_widget.dart
index 8218754..b182f37 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/extract_widget.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/extract_widget.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -13,12 +13,13 @@
 import 'package:analysis_server/src/services/search/element_visitors.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analysis_server/src/utilities/flutter.dart';
-import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/src/dart/analysis/session_helper.dart';
+import 'package:analyzer/src/dart/ast/utilities.dart';
 import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/source.dart' show SourceRange;
 import 'package:analyzer_plugin/utilities/change_builder/change_builder_dart.dart';
@@ -28,7 +29,7 @@
 class ExtractWidgetRefactoringImpl extends RefactoringImpl
     implements ExtractWidgetRefactoring {
   final SearchEngine searchEngine;
-  final ResolveResult resolveResult;
+  final ResolvedUnitResult resolveResult;
   final AnalysisSessionHelper sessionHelper;
   final int offset;
   final int length;
@@ -73,8 +74,7 @@
   ExtractWidgetRefactoringImpl(
       this.searchEngine, this.resolveResult, this.offset, this.length)
       : sessionHelper = new AnalysisSessionHelper(resolveResult.session) {
-    utils =
-        new CorrectionUtils(resolveResult.unit, buffer: resolveResult.content);
+    utils = new CorrectionUtils(resolveResult);
   }
 
   @override
@@ -103,7 +103,7 @@
     }
 
     AstNode astNode = _expression ?? _method ?? _statements.first;
-    _enclosingUnitMember = astNode.getAncestor((n) {
+    _enclosingUnitMember = astNode.thisOrAncestorMatching((n) {
       return n is CompilationUnitMember && n.parent is CompilationUnit;
     });
 
@@ -178,7 +178,7 @@
     }
 
     // Find the enclosing class.
-    _enclosingClassNode = node?.getAncestor((n) => n is ClassDeclaration);
+    _enclosingClassNode = node?.thisOrAncestorOfType<ClassDeclaration>();
     _enclosingClassElement = _enclosingClassNode?.declaredElement;
 
     // new MyWidget(...)
diff --git a/pkg/analysis_server/lib/src/services/refactoring/inline_local.dart b/pkg/analysis_server/lib/src/services/refactoring/inline_local.dart
index eafbcaf..00b8883 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/inline_local.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/inline_local.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -14,8 +14,8 @@
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/src/dart/analysis/session_helper.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
 import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/utilities/range_factory.dart';
@@ -26,8 +26,7 @@
 class InlineLocalRefactoringImpl extends RefactoringImpl
     implements InlineLocalRefactoring {
   final SearchEngine searchEngine;
-  final AstProvider astProvider;
-  final ResolveResult resolveResult;
+  final ResolvedUnitResult resolveResult;
   final int offset;
   CorrectionUtils utils;
 
@@ -36,9 +35,8 @@
   List<SearchMatch> _references;
 
   InlineLocalRefactoringImpl(
-      this.searchEngine, this.astProvider, this.resolveResult, this.offset) {
-    utils =
-        new CorrectionUtils(resolveResult.unit, buffer: resolveResult.content);
+      this.searchEngine, this.resolveResult, this.offset) {
+    utils = new CorrectionUtils(resolveResult);
   }
 
   @override
@@ -79,8 +77,10 @@
         Element element = offsetNode.staticElement;
         if (element is LocalVariableElement) {
           _variableElement = element;
-          AstNode name = await astProvider.getResolvedNameForElement(element);
-          _variableNode = name.parent as VariableDeclaration;
+          var declarationResult =
+              await AnalysisSessionHelper(resolveResult.session)
+                  .getElementDeclaration(element);
+          _variableNode = declarationResult.node;
         }
       }
     }
@@ -121,8 +121,8 @@
     SourceChange change = new SourceChange(refactoringName);
     // remove declaration
     {
-      Statement declarationStatement = _variableNode
-          .getAncestor((node) => node is VariableDeclarationStatement);
+      Statement declarationStatement =
+          _variableNode.thisOrAncestorOfType<VariableDeclarationStatement>();
       SourceRange range = utils.getLinesRangeStatements([declarationStatement]);
       doSourceChange_addElementEdit(change, resolveResult.unit.declaredElement,
           newSourceEdit_range(range, ''));
diff --git a/pkg/analysis_server/lib/src/services/refactoring/inline_method.dart b/pkg/analysis_server/lib/src/services/refactoring/inline_method.dart
index 05e5c1b..4d7b4e2 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/inline_method.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/inline_method.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -16,8 +16,8 @@
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/src/dart/analysis/session_helper.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/utilities/range_factory.dart';
 
@@ -26,7 +26,7 @@
  */
 SourceRange _getLocalsConflictingRange(AstNode node) {
   // maybe Block
-  Block block = node.getAncestor((node) => node is Block);
+  Block block = node.thisOrAncestorOfType<Block>();
   if (block != null) {
     return range.startEnd(node, block);
   }
@@ -188,10 +188,9 @@
 class InlineMethodRefactoringImpl extends RefactoringImpl
     implements InlineMethodRefactoring {
   final SearchEngine searchEngine;
-  final AstProvider astProvider;
-  final ResolveResult resolveResult;
+  final ResolvedUnitResult resolveResult;
   final int offset;
-  ResolvedUnitCache _unitCache;
+  final AnalysisSessionHelper sessionHelper;
   CorrectionUtils utils;
   SourceChange change;
 
@@ -200,7 +199,6 @@
   bool inlineAll = true;
 
   ExecutableElement _methodElement;
-  bool _isAccessor;
   CompilationUnit _methodUnit;
   CorrectionUtils _methodUtils;
   AstNode _methodNode;
@@ -210,13 +208,12 @@
   _SourcePart _methodExpressionPart;
   _SourcePart _methodStatementsPart;
   final List<_ReferenceProcessor> _referenceProcessors = [];
-  final Set<FunctionBody> _alreadyMadeAsync = new Set<FunctionBody>();
+  final Set<Element> _alreadyMadeAsync = new Set<Element>();
 
   InlineMethodRefactoringImpl(
-      this.searchEngine, this.astProvider, this.resolveResult, this.offset) {
-    _unitCache = new ResolvedUnitCache(astProvider, resolveResult.unit);
-    utils =
-        new CorrectionUtils(resolveResult.unit, buffer: resolveResult.content);
+      this.searchEngine, this.resolveResult, this.offset)
+      : sessionHelper = AnalysisSessionHelper(resolveResult.session) {
+    utils = new CorrectionUtils(resolveResult);
   }
 
   @override
@@ -311,24 +308,6 @@
     return new Future.value(change);
   }
 
-  Future<FunctionDeclaration> _computeFunctionDeclaration() async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    CompilationUnit unit = await _unitCache.getUnit(_methodElement);
-    return new NodeLocator(_methodElement.nameOffset)
-        .searchWithin(unit)
-        .getAncestor((n) => n is FunctionDeclaration) as FunctionDeclaration;
-  }
-
-  Future<MethodDeclaration> _computeMethodDeclaration() async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    CompilationUnit unit = await _unitCache.getUnit(_methodElement);
-    return new NodeLocator(_methodElement.nameOffset)
-        .searchWithin(unit)
-        .getAncestor((n) => n is MethodDeclaration) as MethodDeclaration;
-  }
-
   _SourcePart _createSourcePart(SourceRange range) {
     String source = _methodUtils.getRangeText(range);
     String prefix = getLinePrefix(source);
@@ -368,38 +347,30 @@
       return fatalStatus;
     }
     _methodElement = element as ExecutableElement;
-    _isAccessor = element is PropertyAccessorElement;
-    _methodUnit = await _unitCache.getUnit(element);
-    _methodUtils = new CorrectionUtils(_methodUnit);
-    // class member
-    bool isClassMember = element.enclosingElement is ClassElement;
-    if (element is MethodElement || _isAccessor && isClassMember) {
-      MethodDeclaration methodDeclaration = await _computeMethodDeclaration();
-      _methodNode = methodDeclaration;
-      _methodParameters = methodDeclaration.parameters;
-      _methodBody = methodDeclaration.body;
-      // prepare mode
-      isDeclaration = node == methodDeclaration.name;
-      deleteSource = isDeclaration;
-      inlineAll = deleteSource;
-      return new RefactoringStatus();
+
+    var declaration = await sessionHelper.getElementDeclaration(_methodElement);
+    var methodNode = declaration.node;
+    _methodNode = methodNode;
+
+    var resolvedUnit = declaration.resolvedUnit;
+    _methodUnit = resolvedUnit.unit;
+    _methodUtils = new CorrectionUtils(resolvedUnit);
+
+    if (methodNode is MethodDeclaration) {
+      _methodParameters = methodNode.parameters;
+      _methodBody = methodNode.body;
+    } else if (methodNode is FunctionDeclaration) {
+      _methodParameters = methodNode.functionExpression.parameters;
+      _methodBody = methodNode.functionExpression.body;
+    } else {
+      return fatalStatus;
     }
-    // unit member
-    bool isUnitMember = element.enclosingElement is CompilationUnitElement;
-    if (element is FunctionElement || _isAccessor && isUnitMember) {
-      FunctionDeclaration functionDeclaration =
-          await _computeFunctionDeclaration();
-      _methodNode = functionDeclaration;
-      _methodParameters = functionDeclaration.functionExpression.parameters;
-      _methodBody = functionDeclaration.functionExpression.body;
-      // prepare mode
-      isDeclaration = node == functionDeclaration.name;
-      deleteSource = isDeclaration;
-      inlineAll = deleteSource;
-      return new RefactoringStatus();
-    }
-    // OK
-    return fatalStatus;
+
+    isDeclaration = resolveResult.uri == element.source.uri &&
+        node.offset == element.nameOffset;
+    deleteSource = isDeclaration;
+    inlineAll = deleteSource;
+    return new RefactoringStatus();
   }
 
   /**
@@ -467,12 +438,14 @@
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     refElement = reference.element;
+
     // prepare CorrectionUtils
-    CompilationUnit refUnit = await ref._unitCache.getUnit(refElement);
-    _refUtils = new CorrectionUtils(refUnit);
+    var result = await ref.sessionHelper.getResolvedUnitByElement(refElement);
+    _refUtils = new CorrectionUtils(result);
+
     // prepare node and environment
     _node = _refUtils.findNode(reference.sourceRange.offset);
-    Statement refStatement = _node.getAncestor((node) => node is Statement);
+    Statement refStatement = _node.thisOrAncestorOfType<Statement>();
     if (refStatement != null) {
       _refLineRange = _refUtils.getLinesRangeStatements([refStatement]);
       _refPrefix = _refUtils.getNodePrefix(refStatement);
@@ -591,7 +564,7 @@
     // If the element being inlined is async, ensure that the function
     // body that encloses the method is also async.
     if (ref._methodElement.isAsynchronous) {
-      FunctionBody body = _node.getAncestor((n) => n is FunctionBody);
+      FunctionBody body = _node.thisOrAncestorOfType<FunctionBody>();
       if (body != null) {
         if (body.isSynchronous) {
           if (body.isGenerator) {
@@ -608,7 +581,7 @@
               return;
             }
           }
-          if (ref._alreadyMadeAsync.add(body)) {
+          if (ref._alreadyMadeAsync.add(refElement)) {
             SourceRange bodyStart = range.startLength(body, 0);
             _addRefEdit(newSourceEdit_range(bodyStart, 'async '));
           }
@@ -650,7 +623,7 @@
         List<Expression> arguments = [];
         if (_node.inSetterContext()) {
           AssignmentExpression assignment =
-              _node.getAncestor((node) => node is AssignmentExpression);
+              _node.thisOrAncestorOfType<AssignmentExpression>();
           arguments.add(assignment.rightHandSide);
         }
         // inline body
diff --git a/pkg/analysis_server/lib/src/services/refactoring/move_file.dart b/pkg/analysis_server/lib/src/services/refactoring/move_file.dart
index d2e3c69..a068451 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/move_file.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/move_file.dart
@@ -32,6 +32,8 @@
   String oldFile;
   String newFile;
 
+  final packagePrefixedStringPattern = new RegExp(r'''^r?['"]+package:''');
+
   MoveFileRefactoringImpl(ResourceProvider resourceProvider, this.workspace,
       this.source, this.oldFile)
       : resourceProvider = resourceProvider,
@@ -90,7 +92,8 @@
       });
     } else {
       // Otherwise, we need to update any relative part-of references.
-      Iterable<PartOfDirective> partOfs = element.unit.directives
+      final result = await driver.currentSession.getResolvedUnit(oldFile);
+      Iterable<PartOfDirective> partOfs = result.unit.directives
           .whereType<PartOfDirective>()
           .where((po) => po.uri != null && _isRelativeUri(po.uri.stringValue));
 
@@ -139,7 +142,12 @@
     return _getRelativeUri(newFile, refDir);
   }
 
-  final packagePrefixedStringPattern = new RegExp(r'''^r?['"]+package:''');
+  String _getRelativeUri(String path, String from) {
+    String uri = pathContext.relative(path, from: from);
+    List<String> parts = pathContext.split(uri);
+    return pathos.posix.joinAll(parts);
+  }
+
   bool _isPackageReference(SourceReference reference) {
     final Source source = reference.element.source;
     final String quotedImportUri = source.contents.data.substring(
@@ -148,12 +156,6 @@
     return packagePrefixedStringPattern.hasMatch(quotedImportUri);
   }
 
-  String _getRelativeUri(String path, String from) {
-    String uri = pathContext.relative(path, from: from);
-    List<String> parts = pathContext.split(uri);
-    return pathos.posix.joinAll(parts);
-  }
-
   /**
    * Checks if the given [path] represents a relative URI.
    *
diff --git a/pkg/analysis_server/lib/src/services/refactoring/refactoring.dart b/pkg/analysis_server/lib/src/services/refactoring/refactoring.dart
index 50e2344..223d699 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/refactoring.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/refactoring.dart
@@ -22,11 +22,11 @@
 import 'package:analysis_server/src/services/refactoring/rename_unit_member.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analyzer/dart/analysis/results.dart';
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart'
     show RefactoringMethodParameter, SourceChange;
@@ -40,9 +40,9 @@
    * [element] and all the corresponding hierarchy elements.
    */
   factory ConvertGetterToMethodRefactoring(SearchEngine searchEngine,
-      AstProvider astProvider, PropertyAccessorElement element) {
+      AnalysisSession session, PropertyAccessorElement element) {
     return new ConvertGetterToMethodRefactoringImpl(
-        searchEngine, astProvider, element);
+        searchEngine, session, element);
   }
 }
 
@@ -55,9 +55,8 @@
    * [element] and all the corresponding hierarchy elements.
    */
   factory ConvertMethodToGetterRefactoring(SearchEngine searchEngine,
-      AstProvider astProvider, ExecutableElement element) {
-    return new ConvertMethodToGetterRefactoringImpl(
-        searchEngine, astProvider, element);
+      AnalysisSession session, ExecutableElement element) {
+    return new ConvertMethodToGetterRefactoringImpl(searchEngine, element);
   }
 }
 
@@ -68,7 +67,7 @@
   /**
    * Returns a new [ExtractLocalRefactoring] instance.
    */
-  factory ExtractLocalRefactoring(ResolveResult resolveResult,
+  factory ExtractLocalRefactoring(ResolvedUnitResult resolveResult,
       int selectionOffset, int selectionLength) = ExtractLocalRefactoringImpl;
 
   /**
@@ -144,12 +143,11 @@
    */
   factory ExtractMethodRefactoring(
       SearchEngine searchEngine,
-      AstProvider astProvider,
-      ResolveResult resolveResult,
+      ResolvedUnitResult resolveResult,
       int selectionOffset,
       int selectionLength) {
-    return new ExtractMethodRefactoringImpl(searchEngine, astProvider,
-        resolveResult, selectionOffset, selectionLength);
+    return new ExtractMethodRefactoringImpl(
+        searchEngine, resolveResult, selectionOffset, selectionLength);
   }
 
   /**
@@ -243,7 +241,7 @@
    * Returns a new [ExtractWidgetRefactoring] instance.
    */
   factory ExtractWidgetRefactoring(SearchEngine searchEngine,
-      ResolveResult resolveResult, int offset, int length) {
+      ResolvedUnitResult resolveResult, int offset, int length) {
     return new ExtractWidgetRefactoringImpl(
         searchEngine, resolveResult, offset, length);
   }
@@ -278,10 +276,9 @@
   /**
    * Returns a new [InlineLocalRefactoring] instance.
    */
-  factory InlineLocalRefactoring(SearchEngine searchEngine,
-      AstProvider astProvider, ResolveResult resolveResult, int offset) {
-    return new InlineLocalRefactoringImpl(
-        searchEngine, astProvider, resolveResult, offset);
+  factory InlineLocalRefactoring(
+      SearchEngine searchEngine, ResolvedUnitResult resolveResult, int offset) {
+    return new InlineLocalRefactoringImpl(searchEngine, resolveResult, offset);
   }
 
   /**
@@ -302,10 +299,9 @@
   /**
    * Returns a new [InlineMethodRefactoring] instance.
    */
-  factory InlineMethodRefactoring(SearchEngine searchEngine,
-      AstProvider astProvider, ResolveResult resolveResult, int offset) {
-    return new InlineMethodRefactoringImpl(
-        searchEngine, astProvider, resolveResult, offset);
+  factory InlineMethodRefactoring(
+      SearchEngine searchEngine, ResolvedUnitResult resolveResult, int offset) {
+    return new InlineMethodRefactoringImpl(searchEngine, resolveResult, offset);
   }
 
   /**
@@ -413,6 +409,13 @@
   RefactoringWorkspace(this.drivers, this.searchEngine);
 
   /**
+   * Whether the [element] is defined in a file that is in a context root.
+   */
+  bool containsElement(Element element) {
+    return containsFile(element.source.fullName);
+  }
+
+  /**
    * Whether the file with the given [path] is in a context root.
    */
   bool containsFile(String path) {
@@ -441,7 +444,7 @@
    * type.
    */
   factory RenameRefactoring(RefactoringWorkspace workspace,
-      AstProvider astProvider, Element element) {
+      AnalysisSession session, Element element) {
     if (element == null) {
       return null;
     }
@@ -452,11 +455,10 @@
       return new RenameUnitMemberRefactoringImpl(workspace, element);
     }
     if (element is ConstructorElement) {
-      return new RenameConstructorRefactoringImpl(
-          workspace, astProvider, element);
+      return new RenameConstructorRefactoringImpl(workspace, session, element);
     }
     if (element is ImportElement) {
-      return new RenameImportRefactoringImpl(workspace, astProvider, element);
+      return new RenameImportRefactoringImpl(workspace, session, element);
     }
     if (element is LabelElement) {
       return new RenameLabelRefactoringImpl(workspace, element);
@@ -465,11 +467,10 @@
       return new RenameLibraryRefactoringImpl(workspace, element);
     }
     if (element is LocalElement) {
-      return new RenameLocalRefactoringImpl(workspace, astProvider, element);
+      return new RenameLocalRefactoringImpl(workspace, element);
     }
     if (element.enclosingElement is ClassElement) {
-      return new RenameClassMemberRefactoringImpl(
-          workspace, astProvider, element);
+      return new RenameClassMemberRefactoringImpl(workspace, session, element);
     }
     return null;
   }
@@ -501,38 +502,3 @@
    */
   RefactoringStatus checkNewName();
 }
-
-/**
- * Cache for accessing resolved [CompilationUnit]s by [Element]s.
- *
- * Must by short-lived.
- *
- * TODO(scheglov) consider moving to request-bound object.
- */
-class ResolvedUnitCache {
-  final AstProvider _astProvider;
-  final Map<CompilationUnitElement, CompilationUnit> _map = {};
-
-  ResolvedUnitCache(this._astProvider, [CompilationUnit unit]) {
-    if (unit != null) {
-      _map[unit.declaredElement] = unit;
-    }
-  }
-
-  Future<CompilationUnit> getUnit(Element element) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    CompilationUnitElement unitElement = getUnitElement(element);
-    CompilationUnit unit = _map[unitElement];
-    if (unit == null) {
-      unit = await _astProvider.getResolvedUnitForElement(element);
-      _map[unitElement] = unit;
-    }
-    return unit;
-  }
-
-  CompilationUnitElement getUnitElement(Element element) {
-    return element.getAncestor((e) => e is CompilationUnitElement)
-        as CompilationUnitElement;
-  }
-}
diff --git a/pkg/analysis_server/lib/src/services/refactoring/rename.dart b/pkg/analysis_server/lib/src/services/refactoring/rename.dart
index d7f193c..b7663c0 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/rename.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/rename.dart
@@ -18,17 +18,17 @@
  * Helper for renaming one or more [Element]s.
  */
 class RenameProcessor {
-  final SearchEngine searchEngine;
+  final RefactoringWorkspace workspace;
   final SourceChange change;
   final String newName;
 
-  RenameProcessor(this.searchEngine, this.change, this.newName);
+  RenameProcessor(this.workspace, this.change, this.newName);
 
   /**
    * Add the edit that updates the [element] declaration.
    */
   void addDeclarationEdit(Element element) {
-    if (element != null) {
+    if (element != null && workspace.containsElement(element)) {
       SourceEdit edit =
           newSourceEdit_range(range.elementName(element), newName);
       doSourceChange_addElementEdit(change, element, edit);
@@ -41,6 +41,9 @@
   void addReferenceEdits(List<SearchMatch> matches) {
     List<SourceReference> references = getSourceReferences(matches);
     for (SourceReference reference in references) {
+      if (!workspace.containsElement(reference.element)) {
+        continue;
+      }
       reference.addEdit(change, newName);
     }
   }
@@ -50,7 +53,9 @@
    */
   Future<void> renameElement(Element element) {
     addDeclarationEdit(element);
-    return searchEngine.searchReferences(element).then(addReferenceEdits);
+    return workspace.searchEngine
+        .searchReferences(element)
+        .then(addReferenceEdits);
   }
 }
 
@@ -86,7 +91,7 @@
           getElementQualifiedName(element));
       result.addFatalError(message);
     }
-    if (!workspace.containsFile(element.source.fullName)) {
+    if (!workspace.containsElement(element)) {
       String message = format(
           "The {0} '{1}' is defined outside of the project, so cannot be renamed.",
           getElementKindName(element),
diff --git a/pkg/analysis_server/lib/src/services/refactoring/rename_class_member.dart b/pkg/analysis_server/lib/src/services/refactoring/rename_class_member.dart
index d085e78..df98b9e 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/rename_class_member.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/rename_class_member.dart
@@ -14,10 +14,11 @@
 import 'package:analysis_server/src/services/refactoring/rename.dart';
 import 'package:analysis_server/src/services/search/hierarchy.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
+import 'package:analyzer/src/dart/analysis/session_helper.dart';
 import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/source.dart';
 
@@ -25,10 +26,13 @@
  * Checks if creating a method with the given [name] in [classElement] will
  * cause any conflicts.
  */
-Future<RefactoringStatus> validateCreateMethod(SearchEngine searchEngine,
-    AstProvider astProvider, ClassElement classElement, String name) {
+Future<RefactoringStatus> validateCreateMethod(
+    SearchEngine searchEngine,
+    AnalysisSessionHelper sessionHelper,
+    ClassElement classElement,
+    String name) {
   return new _ClassMemberValidator.forCreate(
-          searchEngine, astProvider, classElement, name)
+          searchEngine, sessionHelper, classElement, name)
       .validate();
 }
 
@@ -36,13 +40,14 @@
  * A [Refactoring] for renaming class member [Element]s.
  */
 class RenameClassMemberRefactoringImpl extends RenameRefactoringImpl {
-  final AstProvider astProvider;
+  final AnalysisSessionHelper sessionHelper;
 
   _ClassMemberValidator _validator;
 
   RenameClassMemberRefactoringImpl(
-      RefactoringWorkspace workspace, this.astProvider, Element element)
-      : super(workspace, element);
+      RefactoringWorkspace workspace, AnalysisSession session, Element element)
+      : sessionHelper = AnalysisSessionHelper(session),
+        super(workspace, element);
 
   @override
   String get refactoringName {
@@ -58,7 +63,7 @@
   @override
   Future<RefactoringStatus> checkFinalConditions() {
     _validator = new _ClassMemberValidator.forRename(
-        searchEngine, astProvider, element, newName);
+        searchEngine, sessionHelper, element, newName);
     return _validator.validate();
   }
 
@@ -87,7 +92,7 @@
 
   @override
   Future<void> fillChange() async {
-    var processor = new RenameProcessor(searchEngine, change, newName);
+    var processor = new RenameProcessor(workspace, change, newName);
     // update declarations
     for (Element renameElement in _validator.elements) {
       if (renameElement.isSynthetic && renameElement is FieldElement) {
@@ -105,7 +110,7 @@
     List<SourceReference> nameRefs = getSourceReferences(nameMatches);
     for (SourceReference reference in nameRefs) {
       // ignore references from SDK and pub cache
-      if (!workspace.containsFile(reference.element.source.fullName)) {
+      if (!workspace.containsElement(reference.element)) {
         continue;
       }
       // check the element being renamed is accessible
@@ -132,7 +137,7 @@
  */
 class _ClassMemberValidator {
   final SearchEngine searchEngine;
-  final ResolvedUnitCache unitCache;
+  final AnalysisSessionHelper sessionHelper;
   final LibraryElement library;
   final Element element;
   final ClassElement elementClass;
@@ -145,17 +150,15 @@
   List<SearchMatch> references = <SearchMatch>[];
 
   _ClassMemberValidator.forCreate(
-      this.searchEngine, AstProvider astProvider, this.elementClass, this.name)
-      : unitCache = new ResolvedUnitCache(astProvider),
-        isRename = false,
+      this.searchEngine, this.sessionHelper, this.elementClass, this.name)
+      : isRename = false,
         library = null,
         element = null,
         elementKind = ElementKind.METHOD;
 
   _ClassMemberValidator.forRename(
-      this.searchEngine, AstProvider astProvider, Element element, this.name)
-      : unitCache = new ResolvedUnitCache(astProvider),
-        isRename = true,
+      this.searchEngine, this.sessionHelper, Element element, this.name)
+      : isRename = true,
         library = element.library,
         element = element,
         elementClass = element.enclosingElement,
@@ -260,12 +263,13 @@
     Future<List<LocalElement>> getLocalElements(Element element) async {
       // TODO(brianwilkerson) Determine whether this await is necessary.
       await null;
-      var unitElement = unitCache.getUnitElement(element);
+
+      var resolvedUnit = await sessionHelper.getResolvedUnitByElement(element);
+      var unitElement = resolvedUnit.unit.declaredElement;
       var localElements = localElementMap[unitElement];
       if (localElements == null) {
-        var unit = await unitCache.getUnit(unitElement);
         var collector = new _LocalElementsCollector(name);
-        unit.accept(collector);
+        resolvedUnit.unit.accept(collector);
         localElements = collector.elements;
         localElementMap[unitElement] = localElements;
       }
diff --git a/pkg/analysis_server/lib/src/services/refactoring/rename_constructor.dart b/pkg/analysis_server/lib/src/services/refactoring/rename_constructor.dart
index 755ebff..6baadf4 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/rename_constructor.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/rename_constructor.dart
@@ -14,9 +14,10 @@
 import 'package:analysis_server/src/services/search/hierarchy.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analysis_server/src/services/search/search_engine_internal.dart';
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
+import 'package:analyzer/src/dart/analysis/session_helper.dart';
 import 'package:analyzer/src/generated/java_core.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/utilities/range_factory.dart';
@@ -25,10 +26,10 @@
  * A [Refactoring] for renaming [ConstructorElement]s.
  */
 class RenameConstructorRefactoringImpl extends RenameRefactoringImpl {
-  final AstProvider astProvider;
+  final AnalysisSession session;
 
-  RenameConstructorRefactoringImpl(RefactoringWorkspace workspace,
-      this.astProvider, ConstructorElement element)
+  RenameConstructorRefactoringImpl(
+      RefactoringWorkspace workspace, this.session, ConstructorElement element)
       : super(workspace, element);
 
   @override
@@ -117,11 +118,12 @@
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     ClassElement classElement = element.enclosingElement;
-    AstNode name = await astProvider.getResolvedNameForElement(classElement);
-    ClassDeclaration classNode = name.parent as ClassDeclaration;
-    CorrectionUtils utils = new CorrectionUtils(classNode.parent);
-    ClassMemberLocation location =
-        utils.prepareNewConstructorLocation(classNode);
+
+    var result = await AnalysisSessionHelper(session)
+        .getElementDeclaration(classElement);
+    ClassDeclaration classNode = result.node;
+    var utils = new CorrectionUtils(result.resolvedUnit);
+    var location = utils.prepareNewConstructorLocation(classNode);
     doSourceChange_addElementEdit(
         change,
         classElement,
diff --git a/pkg/analysis_server/lib/src/services/refactoring/rename_import.dart b/pkg/analysis_server/lib/src/services/refactoring/rename_import.dart
index 53e382b..2bc3c99 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/rename_import.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/rename_import.dart
@@ -11,12 +11,10 @@
 import 'package:analysis_server/src/services/refactoring/refactoring_internal.dart';
 import 'package:analysis_server/src/services/refactoring/rename.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
-import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/utilities/range_factory.dart';
 
@@ -24,10 +22,10 @@
  * A [Refactoring] for renaming [ImportElement]s.
  */
 class RenameImportRefactoringImpl extends RenameRefactoringImpl {
-  final AstProvider astProvider;
+  final AnalysisSession session;
 
   RenameImportRefactoringImpl(
-      RefactoringWorkspace workspace, this.astProvider, ImportElement element)
+      RefactoringWorkspace workspace, this.session, ImportElement element)
       : super(workspace, element);
 
   @override
@@ -60,14 +58,14 @@
       PrefixElement prefix = element.prefix;
       SourceEdit edit = null;
       if (newName.isEmpty) {
-        ImportDirective node = await _findNode();
+        ImportDirective node = _findNode();
         int uriEnd = node.uri.end;
         int prefixEnd = element.prefixOffset + prefix.nameLength;
         edit = newSourceEdit_range(
             range.startOffsetEndOffset(uriEnd, prefixEnd), "");
       } else {
         if (prefix == null) {
-          ImportDirective node = await _findNode();
+          ImportDirective node = _findNode();
           int uriEnd = node.uri.end;
           edit =
               newSourceEdit_range(new SourceRange(uriEnd, 0), " as $newName");
@@ -89,7 +87,7 @@
         reference.addEdit(change, '');
       } else {
         SimpleIdentifier interpolationIdentifier =
-            await _getInterpolationIdentifier(reference);
+            _getInterpolationIdentifier(reference);
         if (interpolationIdentifier != null) {
           doSourceChange_addElementEdit(
               change,
@@ -108,11 +106,10 @@
   /**
    * Return the [ImportDirective] node that corresponds to the [element].
    */
-  Future<ImportDirective> _findNode() async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
+  ImportDirective _findNode() {
     LibraryElement library = element.library;
-    CompilationUnit unit = await astProvider.getParsedUnitForElement(library);
+    String path = library.source.fullName;
+    CompilationUnit unit = session.getParsedUnit(path).unit;
     int index = library.imports.indexOf(element);
     return unit.directives.where((d) => d is ImportDirective).toList()[index];
   }
@@ -122,14 +119,9 @@
    * an [InterpolationExpression] without surrounding curly brackets, return it.
    * Otherwise return `null`.
    */
-  Future<SimpleIdentifier> _getInterpolationIdentifier(
-      SourceReference reference) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
+  SimpleIdentifier _getInterpolationIdentifier(SourceReference reference) {
     Source source = reference.element.source;
-    AnalysisSession currentSession = astProvider.driver.currentSession;
-    ParseResult result = await currentSession.getParsedAst(source.fullName);
-    CompilationUnit unit = result.unit;
+    CompilationUnit unit = session.getParsedUnit(source.fullName).unit;
     NodeLocator nodeLocator = new NodeLocator(reference.range.offset);
     AstNode node = nodeLocator.searchWithin(unit);
     if (node is SimpleIdentifier) {
diff --git a/pkg/analysis_server/lib/src/services/refactoring/rename_label.dart b/pkg/analysis_server/lib/src/services/refactoring/rename_label.dart
index 643be1f..012f500 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/rename_label.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/rename_label.dart
@@ -39,7 +39,7 @@
 
   @override
   Future<void> fillChange() {
-    var processor = new RenameProcessor(searchEngine, change, newName);
+    var processor = new RenameProcessor(workspace, change, newName);
     return processor.renameElement(element);
   }
 }
diff --git a/pkg/analysis_server/lib/src/services/refactoring/rename_library.dart b/pkg/analysis_server/lib/src/services/refactoring/rename_library.dart
index e270f82..8ad6912 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/rename_library.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/rename_library.dart
@@ -41,7 +41,7 @@
 
   @override
   Future<void> fillChange() async {
-    var processor = new RenameProcessor(searchEngine, change, newName);
+    var processor = new RenameProcessor(workspace, change, newName);
     await processor.renameElement(element);
   }
 }
diff --git a/pkg/analysis_server/lib/src/services/refactoring/rename_local.dart b/pkg/analysis_server/lib/src/services/refactoring/rename_local.dart
index 369b832..7fac53a 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/rename_local.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/rename_local.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -15,21 +15,20 @@
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
+import 'package:analyzer/src/dart/analysis/session_helper.dart';
 import 'package:analyzer/src/generated/source.dart';
 
 /**
  * A [Refactoring] for renaming [LocalElement]s.
  */
 class RenameLocalRefactoringImpl extends RenameRefactoringImpl {
-  final AstProvider astProvider;
-  final ResolvedUnitCache unitCache;
+  final AnalysisSessionHelper sessionHelper;
 
   List<LocalElement> elements = [];
 
   RenameLocalRefactoringImpl(
-      RefactoringWorkspace workspace, this.astProvider, LocalElement element)
-      : unitCache = new ResolvedUnitCache(astProvider),
+      RefactoringWorkspace workspace, LocalElement element)
+      : sessionHelper = AnalysisSessionHelper(element.session),
         super(workspace, element);
 
   @override
@@ -53,10 +52,9 @@
     RefactoringStatus result = new RefactoringStatus();
     await _prepareElements();
     for (LocalElement element in elements) {
-      CompilationUnit unit = await unitCache.getUnit(element);
-      if (unit != null) {
-        unit.accept(new _ConflictValidatorVisitor(result, newName, element));
-      }
+      var resolvedUnit = await sessionHelper.getResolvedUnitByElement(element);
+      var unit = resolvedUnit.unit;
+      unit.accept(new _ConflictValidatorVisitor(result, newName, element));
     }
     return result;
   }
@@ -76,7 +74,7 @@
 
   @override
   Future<void> fillChange() async {
-    var processor = new RenameProcessor(searchEngine, change, newName);
+    var processor = new RenameProcessor(workspace, change, newName);
     for (Element element in elements) {
       processor.addDeclarationEdit(element);
       var references = await searchEngine.searchReferences(element);
diff --git a/pkg/analysis_server/lib/src/services/refactoring/rename_unit_member.dart b/pkg/analysis_server/lib/src/services/refactoring/rename_unit_member.dart
index 88cac3a..5d20312 100644
--- a/pkg/analysis_server/lib/src/services/refactoring/rename_unit_member.dart
+++ b/pkg/analysis_server/lib/src/services/refactoring/rename_unit_member.dart
@@ -127,7 +127,7 @@
     }
 
     // Rename each element and references to it.
-    var processor = new RenameProcessor(searchEngine, change, newName);
+    var processor = new RenameProcessor(workspace, change, newName);
     for (var element in elements) {
       await processor.renameElement(element);
     }
@@ -136,7 +136,7 @@
     if (_flutterWidgetState != null) {
       _updateFlutterWidgetStateName();
       await new RenameProcessor(
-        searchEngine,
+        workspace,
         change,
         _flutterWidgetStateNewName,
       ).renameElement(_flutterWidgetState);
diff --git a/pkg/analysis_server/lib/src/services/search/search_engine.dart b/pkg/analysis_server/lib/src/services/search/search_engine.dart
index df6e31c..74445c4 100644
--- a/pkg/analysis_server/lib/src/services/search/search_engine.dart
+++ b/pkg/analysis_server/lib/src/services/search/search_engine.dart
@@ -140,7 +140,7 @@
   MatchKind get kind;
 
   /**
-   * Return the [LibraryElement] for the [libraryUri] in the [context].
+   * Return the [LibraryElement] for the [file].
    */
   LibraryElement get libraryElement;
 
diff --git a/pkg/analysis_server/lib/src/status/diagnostics.dart b/pkg/analysis_server/lib/src/status/diagnostics.dart
index dc21222..a8b5a1a 100644
--- a/pkg/analysis_server/lib/src/status/diagnostics.dart
+++ b/pkg/analysis_server/lib/src/status/diagnostics.dart
@@ -12,7 +12,6 @@
 import 'package:analysis_server/protocol/protocol_generated.dart';
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/domain_completion.dart';
-import 'package:analysis_server/src/domain_diagnostic.dart';
 import 'package:analysis_server/src/plugin/plugin_manager.dart';
 import 'package:analysis_server/src/server/http_server.dart';
 import 'package:analysis_server/src/services/completion/completion_performance.dart';
@@ -21,6 +20,7 @@
 import 'package:analysis_server/src/status/element_writer.dart';
 import 'package:analysis_server/src/status/pages.dart';
 import 'package:analysis_server/src/utilities/profiling.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/instrumentation/instrumentation.dart';
 import 'package:analyzer/src/context/context_root.dart';
@@ -187,7 +187,7 @@
           raw: true);
       return;
     }
-    AnalysisResult result = await driver.getResult(path);
+    ResolvedUnitResult result = await driver.getResult(path);
     if (result == null) {
       p(
           'An AST could not be produced for the file '
@@ -387,7 +387,6 @@
     b.write(writeOption('Strong mode', options.strongMode));
     b.write(writeOption('Implicit dynamic', options.implicitDynamic));
     b.write(writeOption('Implicit casts', options.implicitCasts));
-    b.write(writeOption('Declaration casts', options.declarationCasts));
 
     b.write(
         writeOption('Analyze function bodies', options.analyzeFunctionBodies));
@@ -400,6 +399,8 @@
     b.write(writeOption('Preserve comments', options.preserveComments));
     b.write(writeOption('Strong mode hints', options.strongModeHints));
 
+    b.write(writeOption('Enabled experiments', options.enabledExperiments));
+
     return b.toString();
   }
 
@@ -714,7 +715,7 @@
   SocketServer socketServer;
 
   /// The last few lines printed.
-  List<String> lastPrintedLines = <String>[];
+  final List<String> lastPrintedLines;
 
   DiagnosticsSite(this.socketServer, this.lastPrintedLines)
       : super('Analysis Server') {
@@ -783,7 +784,7 @@
           raw: true);
       return;
     }
-    AnalysisResult result = await driver.getResult(path);
+    ResolvedUnitResult result = await driver.getResult(path);
     if (result == null) {
       p(
           'An element model could not be produced for the file '
@@ -956,11 +957,6 @@
       : super(site, 'memory', 'Memory and CPU Usage',
             description: 'Memory and CPU usage for the analysis server.');
 
-  DiagnosticDomainHandler get diagnosticDomain {
-    return server.handlers
-        .firstWhere((handler) => handler is DiagnosticDomainHandler);
-  }
-
   @override
   Future generateContent(Map<String, String> params) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
@@ -1246,7 +1242,7 @@
   final WebSocket socket;
 
   int _id = 0;
-  Map<String, Completer<Map>> _completers = {};
+  final Map<String, Completer<Map>> _completers = {};
 
   ServiceProtocol._(this.socket) {
     socket.listen(_handleMessage);
diff --git a/pkg/analysis_server/lib/src/status/pages.dart b/pkg/analysis_server/lib/src/status/pages.dart
index b270a3c..41b9b80 100644
--- a/pkg/analysis_server/lib/src/status/pages.dart
+++ b/pkg/analysis_server/lib/src/status/pages.dart
@@ -136,7 +136,7 @@
 /// Contains a collection of Pages.
 abstract class Site {
   final String title;
-  List<Page> pages = [];
+  final List<Page> pages = [];
 
   Site(this.title);
 
diff --git a/pkg/analysis_server/lib/src/status/tree_writer.dart b/pkg/analysis_server/lib/src/status/tree_writer.dart
index 9feb8af..62b07f1 100644
--- a/pkg/analysis_server/lib/src/status/tree_writer.dart
+++ b/pkg/analysis_server/lib/src/status/tree_writer.dart
@@ -13,7 +13,7 @@
  * Utility methods that can be mixed in to classes that produce an HTML
  * representation of a tree structure.
  */
-abstract class TreeWriter {
+mixin TreeWriter {
   /**
    * The buffer on which the HTML is to be written.
    */
diff --git a/pkg/analysis_server/lib/src/utilities/flutter.dart b/pkg/analysis_server/lib/src/utilities/flutter.dart
index f116530..6e754c3 100644
--- a/pkg/analysis_server/lib/src/utilities/flutter.dart
+++ b/pkg/analysis_server/lib/src/utilities/flutter.dart
@@ -19,6 +19,8 @@
 const _STATE_NAME = "State";
 const _STATEFUL_WIDGET_NAME = "StatefulWidget";
 const _STATELESS_WIDGET_NAME = "StatelessWidget";
+const _STREAM_BUILDER_NAME = "StreamBuilder";
+const _STREAM_BUILDER_URI = "package:flutter/src/widgets/async.dart";
 const _WIDGET_NAME = "Widget";
 const _WIDGET_URI = "package:flutter/src/widgets/framework.dart";
 final _frameworkUri = Uri.parse('package:flutter/src/widgets/framework.dart');
@@ -307,6 +309,14 @@
 }
 
 /**
+ * Return `true` if the given [type] is the Flutter class `StreamBuilder`.
+ */
+bool isExactWidgetTypeStreamBuilder(DartType type) {
+  return type is InterfaceType &&
+      _isExactWidget(type.element, _STREAM_BUILDER_NAME, _STREAM_BUILDER_URI);
+}
+
+/**
  * Return `true` if the given [type] is the Flutter class `Widget`, or its
  * subtype.
  */
diff --git a/pkg/analysis_server/lib/src/utilities/profiling.dart b/pkg/analysis_server/lib/src/utilities/profiling.dart
index 7e2e49b..9dbd260 100644
--- a/pkg/analysis_server/lib/src/utilities/profiling.dart
+++ b/pkg/analysis_server/lib/src/utilities/profiling.dart
@@ -12,8 +12,6 @@
 
   Future<UsageInfo> getProcessUsage(int processId);
 
-  UsageInfo getProcessUsageSync(int processId);
-
   /// Return a [ProcessProfiler] instance suitable for the current host
   /// platform. This can return `null` if we're not able to gather memory and
   /// cpu information for the current platform.
@@ -65,17 +63,6 @@
     }
   }
 
-  UsageInfo getProcessUsageSync(int processId) {
-    try {
-      // Execution time is typically 2-4ms.
-      ProcessResult result =
-          Process.runSync('ps', ['-o', '%cpu=,rss=', processId.toString()]);
-      return result.exitCode == 0 ? _parse(result.stdout) : null;
-    } catch (e) {
-      return null;
-    }
-  }
-
   UsageInfo _parse(String psResults) {
     try {
       // "  0.0 378940"
diff --git a/pkg/analysis_server/lib/starter.dart b/pkg/analysis_server/lib/starter.dart
index aa4a30e..949e761 100644
--- a/pkg/analysis_server/lib/starter.dart
+++ b/pkg/analysis_server/lib/starter.dart
@@ -2,7 +2,6 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/server/detachable_filesystem_manager.dart';
 import 'package:analysis_server/src/server/driver.dart';
 import 'package:analyzer/instrumentation/instrumentation.dart';
@@ -47,10 +46,6 @@
 
   /**
    * Use the given command-line [arguments] to start this server.
-   *
-   * At least temporarily returns AnalysisServer so that consumers of the
-   * starter API can then use the server, this is done as a stopgap for the
-   * angular plugin until the official plugin API is finished.
    */
-  AnalysisServer start(List<String> arguments);
+  void start(List<String> arguments);
 }
diff --git a/pkg/analysis_server/test/abstract_context.dart b/pkg/analysis_server/test/abstract_context.dart
index ecbbbb32..6f4f753 100644
--- a/pkg/analysis_server/test/abstract_context.dart
+++ b/pkg/analysis_server/test/abstract_context.dart
@@ -1,29 +1,23 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:async';
 
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/visitor.dart';
-import 'package:analyzer/exception/exception.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/context/context_root.dart';
+import 'package:analyzer/src/dart/analysis/analysis_context_collection.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/dart/analysis/driver_based_analysis_context.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
-import 'package:analyzer/src/file_system/file_system.dart';
 import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/engine.dart' as engine;
-import 'package:analyzer/src/generated/parser.dart' as analyzer;
-import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source_io.dart';
-import 'package:analyzer/src/source/package_map_resolver.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
-import 'package:analyzer/src/dart/analysis/byte_store.dart';
-import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 
-import 'mock_sdk.dart';
 import 'src/utilities/flutter_util.dart';
 
 /**
@@ -48,25 +42,25 @@
  */
 typedef void _ElementVisitorFunction(Element element);
 
-class AbstractContextTest extends Object with ResourceProviderMixin {
-  DartSdk sdk;
-  Map<String, List<Folder>> packageMap;
-  UriResolver resourceResolver;
-
-  StringBuffer _logBuffer = new StringBuffer();
+class AbstractContextTest with ResourceProviderMixin {
   FileContentOverlay fileContentOverlay = new FileContentOverlay();
   AnalysisDriver _driver;
 
   AnalysisDriver get driver => _driver;
 
+  AnalysisSession get session => driver.currentSession;
+
+  /// The file system specific `/home/test/pubspec.yaml` path.
+  String get testPubspecPath => convertPath('/home/test/pubspec.yaml');
+
   void addFlutterPackage() {
-    addMetaPackageSource();
+    addMetaPackage();
     Folder libFolder = configureFlutterPackage(resourceProvider);
-    packageMap['flutter'] = [libFolder];
-    configureDriver();
+    _addTestPackageDependency('flutter', libFolder.parent.path);
   }
 
-  Source addMetaPackageSource() => addPackageSource('meta', 'meta.dart', r'''
+  void addMetaPackage() {
+    addPackageFile('meta', 'meta.dart', r'''
 library meta;
 
 const _IsTest isTest = const _IsTest();
@@ -88,13 +82,15 @@
   const _IsTestGroup();
 }
 ''');
+  }
 
-  Source addPackageSource(String packageName, String filePath, String content) {
-    packageMap[packageName] = [newFolder('/pubcache/$packageName/lib')];
-    File file =
-        newFile('/pubcache/$packageName/lib/$filePath', content: content);
-    configureDriver();
-    return file.createSource();
+  /// Add a new file with the given [pathInLib] to the package with the
+  /// given [packageName].  Then ensure that the test package depends on the
+  /// [packageName].
+  File addPackageFile(String packageName, String pathInLib, String content) {
+    var packagePath = '/.pub-cache/$packageName';
+    _addTestPackageDependency(packageName, packagePath);
+    return newFile('$packagePath/lib/$pathInLib', content: content);
   }
 
   Source addSource(String path, String content, [Uri uri]) {
@@ -106,52 +102,22 @@
     return source;
   }
 
-  /**
-   * Re-configure the driver. This is necessary, for example, after defining a
-   * new package that test code will reference.
-   */
-  void configureDriver() {
-    driver.configure();
-  }
-
-  void configurePreviewDart2() {
-    driver.configure(
-        analysisOptions: new AnalysisOptionsImpl.from(driver.analysisOptions)
-          ..previewDart2 = true);
-  }
-
-  void processRequiredPlugins() {
-    AnalysisEngine.instance.processRequiredPlugins();
-  }
-
   Future<CompilationUnit> resolveLibraryUnit(Source source) async {
-    return (await driver.getResult(source.fullName))?.unit;
+    var resolveResult = await session.getResolvedUnit(source.fullName);
+    return resolveResult.unit;
   }
 
   void setUp() {
-    processRequiredPlugins();
     setupResourceProvider();
-    sdk = new MockSdk(resourceProvider: resourceProvider);
-    resourceResolver = new ResourceUriResolver(resourceProvider);
-    packageMap = new Map<String, List<Folder>>();
-    PackageMapUriResolver packageResolver =
-        new PackageMapUriResolver(resourceProvider, packageMap);
-    SourceFactory sourceFactory = new SourceFactory(
-        [new DartUriResolver(sdk), packageResolver, resourceResolver]);
-    PerformanceLog log = new PerformanceLog(_logBuffer);
-    AnalysisDriverScheduler scheduler = new AnalysisDriverScheduler(log);
-    _driver = new AnalysisDriver(
-        scheduler,
-        log,
-        resourceProvider,
-        new MemoryByteStore(),
-        fileContentOverlay,
-        new ContextRoot(resourceProvider.convertPath('/project'), [],
-            pathContext: resourceProvider.pathContext),
-        sourceFactory,
-        new AnalysisOptionsImpl()..useFastaParser = analyzer.Parser.useFasta);
-    scheduler.start();
-    AnalysisEngine.instance.logger = PrintLogger.instance;
+
+    new MockSdk(resourceProvider: resourceProvider);
+
+    newFolder('/home/test');
+    newFile('/home/test/.packages', content: r'''
+test:file:///home/test/lib
+''');
+
+    _createDriver();
   }
 
   void setupResourceProvider() {}
@@ -160,28 +126,42 @@
     AnalysisEngine.instance.clearCaches();
     AnalysisEngine.instance.logger = null;
   }
-}
 
-/**
- * Instances of the class [PrintLogger] print all of the errors.
- */
-class PrintLogger implements Logger {
-  static final Logger instance = new PrintLogger();
-
-  @override
-  void logError(String message, [CaughtException exception]) {
-    print(message);
-    if (exception != null) {
-      print(exception);
-    }
+  /// Update `/home/test/pubspec.yaml` and create the driver.
+  void updateTestPubspecFile(String content) {
+    newFile(testPubspecPath, content: content);
+    _createDriver();
   }
 
-  @override
-  void logInformation(String message, [CaughtException exception]) {
-    print(message);
-    if (exception != null) {
-      print(exception);
+  void _addTestPackageDependency(String name, String rootPath) {
+    var packagesFile = getFile('/home/test/.packages');
+    var packagesContent = packagesFile.readAsStringSync();
+
+    // Ignore if there is already the same package dependency.
+    if (packagesContent.contains('$name:file://')) {
+      return;
     }
+
+    packagesContent += '$name:${toUri('$rootPath/lib')}\n';
+
+    packagesFile.writeAsStringSync(packagesContent);
+
+    _createDriver();
+  }
+
+  void _createDriver() {
+    var collection = AnalysisContextCollectionImpl(
+      includedPaths: [convertPath('/home')],
+      enableIndex: true,
+      fileContentOverlay: fileContentOverlay,
+      resourceProvider: resourceProvider,
+      sdkPath: convertPath('/sdk'),
+    );
+
+    var testPath = convertPath('/home/test');
+    DriverBasedAnalysisContext context = collection.contextFor(testPath);
+
+    _driver = context.driver;
   }
 }
 
diff --git a/pkg/analysis_server/test/abstract_single_unit.dart b/pkg/analysis_server/test/abstract_single_unit.dart
index 78e2280..b0901725 100644
--- a/pkg/analysis_server/test/abstract_single_unit.dart
+++ b/pkg/analysis_server/test/abstract_single_unit.dart
@@ -1,14 +1,14 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:async';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/error/error.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
 import 'package:analyzer/src/dart/error/hint_codes.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
@@ -23,7 +23,7 @@
   String testCode;
   String testFile;
   Source testSource;
-  AnalysisResult testAnalysisResult;
+  ResolvedUnitResult testAnalysisResult;
   CompilationUnit testUnit;
   CompilationUnitElement testUnitElement;
   LibraryElement testLibraryElement;
@@ -64,7 +64,7 @@
   AstNode findNodeAtOffset(int offset, [Predicate<AstNode> predicate]) {
     AstNode result = new NodeLocator(offset).searchWithin(testUnit);
     if (result != null && predicate != null) {
-      result = result.getAncestor(predicate);
+      result = result.thisOrAncestorMatching(predicate);
     }
     return result;
   }
@@ -112,7 +112,7 @@
 
   Future<void> resolveTestUnit(String code) async {
     addTestSource(code);
-    testAnalysisResult = await driver.getResult(convertPath(testFile));
+    testAnalysisResult = await session.getResolvedUnit(testFile);
     testUnit = testAnalysisResult.unit;
     if (verifyNoTestUnitErrors) {
       expect(testAnalysisResult.errors.where((AnalysisError error) {
@@ -132,7 +132,7 @@
   @override
   void setUp() {
     super.setUp();
-    testFile = resourceProvider.convertPath('/project/test.dart');
+    testFile = convertPath('/home/test/lib/test.dart');
   }
 }
 
diff --git a/pkg/analysis_server/test/analysis/get_errors_test.dart b/pkg/analysis_server/test/analysis/get_errors_test.dart
index 8649fcc..cb0baa7 100644
--- a/pkg/analysis_server/test/analysis/get_errors_test.dart
+++ b/pkg/analysis_server/test/analysis/get_errors_test.dart
@@ -67,13 +67,6 @@
   }
 
   @failingTest
-  test_fileDoesNotExist() {
-    // Broken under the new driver.
-    String file = convertPath('$projectPath/doesNotExist.dart');
-    return _checkInvalid(file);
-  }
-
-  @failingTest
   test_fileWithoutContext() {
     // Broken under the new driver.
     String file = convertPath('/outside.dart');
@@ -112,25 +105,6 @@
     expect(errors, isEmpty);
   }
 
-  @failingTest
-  test_removeContextAfterRequest() async {
-    // Broken under the new driver.
-    addTestFile('''
-main() {
-  print(42)
-}
-''');
-    // handle the request synchronously
-    Request request = _createGetErrorsRequest(testFile);
-    server.handleRequest(request);
-    // remove context, causes sending an "invalid file" error
-    deleteFolder(projectPath);
-    // wait for an error response
-    Response response = await serverChannel.waitForResponse(request);
-    expect(response.error, isNotNull);
-    expect(response.error.code, RequestErrorCode.GET_ERRORS_INVALID_FILE);
-  }
-
   Future _checkInvalid(String file) async {
     Request request = _createGetErrorsRequest(file);
     Response response = await serverChannel.sendRequest(request);
diff --git a/pkg/analysis_server/test/analysis/get_navigation_test.dart b/pkg/analysis_server/test/analysis/get_navigation_test.dart
index 20f6b0f..d620a0d 100644
--- a/pkg/analysis_server/test/analysis/get_navigation_test.dart
+++ b/pkg/analysis_server/test/analysis/get_navigation_test.dart
@@ -75,7 +75,7 @@
   }
 
   test_fileOutsideOfRoot() async {
-    testFile = resourceProvider.convertPath('/outside.dart');
+    testFile = convertPath('/outside.dart');
     addTestFile('''
 main() {
   var test = 0;
diff --git a/pkg/analysis_server/test/analysis/get_signature_test.dart b/pkg/analysis_server/test/analysis/get_signature_test.dart
index fdf651e..10567ce 100644
--- a/pkg/analysis_server/test/analysis/get_signature_test.dart
+++ b/pkg/analysis_server/test/analysis/get_signature_test.dart
@@ -116,6 +116,21 @@
         equals(new ParameterInfo(ParameterKind.NAMED, "length", "int")));
   }
 
+  test_does_not_walk_up_over_closure() async {
+    addTestFile('''
+one(String name, int length) {}
+main() {
+  one("Danny", () {
+    /*^*/
+  });
+}
+''');
+    var result = await prepareRawSignature('/*^*/');
+    expect(result.error, isNotNull);
+    expect(result.error.code,
+        equals(RequestErrorCode.GET_SIGNATURE_UNKNOWN_FUNCTION));
+  }
+
   test_error_file_invalid_path() async {
     var result = await prepareRawSignatureAt(0, file: ':\\/?*');
     expect(result.error, isNotNull);
@@ -125,10 +140,10 @@
 
   test_error_file_not_analyzed() async {
     var result = await prepareRawSignatureAt(0,
-        file: resourceProvider.convertPath('/not/in/project.dart'));
+        file: convertPath('/not/in/project.dart'));
     expect(result.error, isNotNull);
-    expect(result.error.code,
-        equals(RequestErrorCode.GET_SIGNATURE_UNKNOWN_FUNCTION));
+    expect(
+        result.error.code, equals(RequestErrorCode.GET_SIGNATURE_INVALID_FILE));
   }
 
   test_error_function_unknown() async {
@@ -438,19 +453,4 @@
     expect(result.parameters[1],
         equals(new ParameterInfo(ParameterKind.NAMED, "length", "int")));
   }
-
-  test_does_not_walk_up_over_closure() async {
-    addTestFile('''
-one(String name, int length) {}
-main() {
-  one("Danny", () {
-    /*^*/
-  });
-}
-''');
-    var result = await prepareRawSignature('/*^*/');
-    expect(result.error, isNotNull);
-    expect(result.error.code,
-        equals(RequestErrorCode.GET_SIGNATURE_UNKNOWN_FUNCTION));
-  }
 }
diff --git a/pkg/analysis_server/test/analysis_abstract.dart b/pkg/analysis_server/test/analysis_abstract.dart
index 3610b68..8415bc9 100644
--- a/pkg/analysis_server/test/analysis_abstract.dart
+++ b/pkg/analysis_server/test/analysis_abstract.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -18,6 +18,7 @@
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/protocol/protocol.dart' as plugin;
 import 'package:analyzer_plugin/protocol/protocol_generated.dart' as plugin;
@@ -26,7 +27,6 @@
 import 'package:test/test.dart';
 import 'package:watcher/watcher.dart';
 
-import 'mock_sdk.dart';
 import 'mocks.dart';
 
 int findIdentifierLength(String search) {
@@ -47,7 +47,7 @@
 /**
  * An abstract base for all 'analysis' domain tests.
  */
-class AbstractAnalysisTest extends Object with ResourceProviderMixin {
+class AbstractAnalysisTest with ResourceProviderMixin {
   bool generateSummaryFiles = false;
   MockServerChannel serverChannel;
   TestPluginManager pluginManager;
@@ -120,7 +120,7 @@
         serverChannel,
         resourceProvider,
         options,
-        new DartSdkManager(resourceProvider.convertPath('/'), true),
+        new DartSdkManager(resourceProvider.convertPath('/sdk'), true),
         InstrumentationService.NULL_SERVICE);
   }
 
@@ -194,9 +194,9 @@
 
   void setUp() {
     serverChannel = new MockServerChannel();
-    projectPath = resourceProvider.convertPath('/project');
-    testFolder = resourceProvider.convertPath('/project/bin');
-    testFile = resourceProvider.convertPath('/project/bin/test.dart');
+    projectPath = convertPath('/project');
+    testFolder = convertPath('/project/bin');
+    testFile = convertPath('/project/bin/test.dart');
     pluginManager = new TestPluginManager();
     server = createAnalysisServer();
     server.pluginManager = pluginManager;
diff --git a/pkg/analysis_server/test/analysis_server_test.dart b/pkg/analysis_server/test/analysis_server_test.dart
index 789f634..8a9ea74 100644
--- a/pkg/analysis_server/test/analysis_server_test.dart
+++ b/pkg/analysis_server/test/analysis_server_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -11,15 +11,13 @@
 import 'package:analysis_server/src/domain_server.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/instrumentation/instrumentation.dart';
-import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
-import 'package:plugin/manager.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import 'mock_sdk.dart';
 import 'mocks.dart';
 
 main() {
@@ -29,7 +27,7 @@
 }
 
 @reflectiveTest
-class AnalysisServerTest extends Object with ResourceProviderMixin {
+class AnalysisServerTest with ResourceProviderMixin {
   MockServerChannel channel;
   AnalysisServer server;
 
@@ -82,13 +80,7 @@
     }
   }
 
-  void processRequiredPlugins() {
-    ExtensionManager manager = new ExtensionManager();
-    manager.processPlugins(AnalysisEngine.instance.requiredPlugins);
-  }
-
   void setUp() {
-    processRequiredPlugins();
     channel = new MockServerChannel();
     // Create an SDK in the mock file system.
     new MockSdk(resourceProvider: resourceProvider);
@@ -96,7 +88,7 @@
         channel,
         resourceProvider,
         new AnalysisServerOptions(),
-        new DartSdkManager(convertPath('/'), false),
+        new DartSdkManager(convertPath('/sdk'), false),
         InstrumentationService.NULL_SERVICE);
   }
 
@@ -114,8 +106,7 @@
     var pkgFolder = convertPath('/pkg');
     newFolder(pkgFolder);
     newFolder(join(pkgFolder, 'lib'));
-    newFile(join(pkgFolder, 'lib', 'test.dart'),
-        content: 'class C {}');
+    newFile(join(pkgFolder, 'lib', 'test.dart'), content: 'class C {}');
     server.setAnalysisRoots('0', [pkgFolder], [], {});
     // Pump the event queue to make sure the server has finished any
     // analysis.
diff --git a/pkg/analysis_server/test/completion_test.dart b/pkg/analysis_server/test/completion_test.dart
index 5bed630..50b8449 100644
--- a/pkg/analysis_server/test/completion_test.dart
+++ b/pkg/analysis_server/test/completion_test.dart
@@ -1709,8 +1709,7 @@
     buildTests(
         'testLibrary002',
         '''t2() {var q=[0],z=q.!1length;q.!2clear();}''',
-        <String>["1+length", "1+isEmpty", "2+clear"],
-        failingTests: '1');
+        <String>["1+length", "1+isEmpty", "2+clear"]);
 
     // TODO Include corelib analysis
     buildTests('testLibrary003', '''class X{var q; f() {q.!1a!2}}''',
diff --git a/pkg/analysis_server/test/context_manager_test.dart b/pkg/analysis_server/test/context_manager_test.dart
index e04d0de..0bfbe6b 100644
--- a/pkg/analysis_server/test/context_manager_test.dart
+++ b/pkg/analysis_server/test/context_manager_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -24,6 +24,7 @@
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/services/lint.dart';
 import 'package:analyzer/src/summary/summary_file_builder.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer/src/util/glob.dart';
 import 'package:linter/src/rules.dart';
@@ -34,7 +35,6 @@
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:watcher/watcher.dart';
 
-import 'mock_sdk.dart';
 import 'src/plugin/plugin_manager_test.dart';
 
 main() {
@@ -500,7 +500,7 @@
     var testLibUri = resourceProvider.pathContext.toUri(testLib);
     resourceProvider.newFile(packagespecPath, 'unittest:$testLibUri');
     String libPath = '$projPath/${ContextManagerTest.LIB_NAME}';
-    File mainFile = newFile('$libPath/main.dart', content: '');
+    File mainFile = newFile('$libPath/main.dart');
     Source source = mainFile.createSource();
 
     manager.setRoots(<String>[projPath], <String>[], <String, String>{});
@@ -586,8 +586,8 @@
     // create files
     newFile('$subProjectA/pubspec.yaml', content: 'pubspec');
     newFile('$subProjectB/pubspec.yaml', content: 'pubspec');
-    newFile('$subProjectA/.packages', content: '');
-    newFile('$subProjectB/.packages', content: '');
+    newFile('$subProjectA/.packages');
+    newFile('$subProjectB/.packages');
 
     newFile(rootFile, content: 'library root;');
     newFile(subProjectA_file, content: 'library a;');
@@ -1641,7 +1641,7 @@
   }
 }
 
-abstract class ContextManagerTest extends Object with ResourceProviderMixin {
+abstract class ContextManagerTest with ResourceProviderMixin {
   /**
    * The name of the 'bin' directory.
    */
@@ -1741,7 +1741,7 @@
     resourceProvider.newFolder(projPath);
     // Create an SDK in the mock file system.
     new MockSdk(generateSummaryFiles: true, resourceProvider: resourceProvider);
-    DartSdkManager sdkManager = new DartSdkManager(convertPath('/'), true);
+    DartSdkManager sdkManager = new DartSdkManager(convertPath('/sdk'), true);
     manager = new ContextManagerImpl(
         resourceProvider,
         new FileContentOverlay(),
@@ -2167,7 +2167,7 @@
     manager.setRoots(<String>[projPath], <String>[], <String, String>{});
     await pumpEventQueue();
 
-    AnalysisResult result = await callbacks.currentDriver.getResult(file.path);
+    var result = await callbacks.currentDriver.getResult(file.path);
 
     // Not strong mode - both in the context and the SDK context.
 //    AnalysisContext sdkContext = sourceFactory.dartSdk.context;
@@ -2569,7 +2569,7 @@
     ContextBuilderOptions builderOptions = new ContextBuilderOptions();
     builderOptions.defaultOptions = options;
     ContextBuilder builder = new ContextBuilder(
-        resourceProvider, sdkManager, new ContentCache(),
+        resourceProvider, sdkManager, null,
         options: builderOptions);
     return builder;
   }
diff --git a/pkg/analysis_server/test/domain_analysis_test.dart b/pkg/analysis_server/test/domain_analysis_test.dart
index 6bb6343..e50b52f 100644
--- a/pkg/analysis_server/test/domain_analysis_test.dart
+++ b/pkg/analysis_server/test/domain_analysis_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -10,17 +10,15 @@
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/domain_analysis.dart';
 import 'package:analyzer/instrumentation/instrumentation.dart';
-import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:analyzer_plugin/protocol/protocol_generated.dart' as plugin;
-import 'package:plugin/manager.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import 'analysis_abstract.dart';
-import 'mock_sdk.dart';
 import 'mocks.dart';
 
 main() {
@@ -64,8 +62,8 @@
     expect(response, isResponseSuccess('0'));
     // verify that unit is resolved eventually
     await server.onAnalysisComplete;
-    var unit = await serverRef.getResolvedCompilationUnit(file);
-    expect(unit, isNotNull);
+    var resolvedUnit = await serverRef.getResolvedUnit(file);
+    expect(resolvedUnit, isNotNull);
   }
 
   test_setAnalysisRoots_included_nonexistentFolder() async {
@@ -78,8 +76,8 @@
     // Non-existence of /project_a should not prevent files in /project_b
     // from being analyzed.
     await server.onAnalysisComplete;
-    var unit = await serverRef.getResolvedCompilationUnit(fileB);
-    expect(unit, isNotNull);
+    var resolvedUnit = await serverRef.getResolvedUnit(fileB);
+    expect(resolvedUnit, isNotNull);
   }
 
   test_setAnalysisRoots_included_notAbsolute() async {
@@ -338,7 +336,7 @@
 /**
  * A helper to test 'analysis.*' requests.
  */
-class AnalysisTestHelper extends Object with ResourceProviderMixin {
+class AnalysisTestHelper with ResourceProviderMixin {
   MockServerChannel serverChannel;
   AnalysisServer server;
   AnalysisDomainHandler handler;
@@ -356,7 +354,6 @@
   AnalysisTestHelper() {
     projectPath = convertPath('/project');
     testFile = convertPath('/project/bin/test.dart');
-    processRequiredPlugins();
     serverChannel = new MockServerChannel();
     // Create an SDK in the mock file system.
     new MockSdk(resourceProvider: resourceProvider);
@@ -364,7 +361,7 @@
         serverChannel,
         resourceProvider,
         new AnalysisServerOptions(),
-        new DartSdkManager(convertPath('/'), false),
+        new DartSdkManager(convertPath('/sdk'), false),
         InstrumentationService.NULL_SERVICE);
     handler = new AnalysisDomainHandler(server);
     // listen for notifications
@@ -518,11 +515,6 @@
     expect(response, isResponseSuccess('0'));
   }
 
-  void processRequiredPlugins() {
-    ExtensionManager manager = new ExtensionManager();
-    manager.processPlugins(AnalysisEngine.instance.requiredPlugins);
-  }
-
   /**
    * Send an `updateContent` request for [testFile].
    */
@@ -661,7 +653,7 @@
   }
 
   test_afterAnalysis_sdkFile() async {
-    String file = convertPath('/lib/core/core.dart');
+    String file = convertPath('/sdk/lib/core/core.dart');
     addTestFile('// no matter');
     createProject();
     // wait for analysis, no results initially
diff --git a/pkg/analysis_server/test/domain_completion_test.dart b/pkg/analysis_server/test/domain_completion_test.dart
index 0566e1f..b3c7c46 100644
--- a/pkg/analysis_server/test/domain_completion_test.dart
+++ b/pkg/analysis_server/test/domain_completion_test.dart
@@ -238,7 +238,7 @@
     //
     // We no longer support the analysis of non-dart files.
     //
-    testFile = resourceProvider.convertPath('/project/web/test.html');
+    testFile = convertPath('/project/web/test.html');
     addTestFile('''
       <html>^</html>
     ''');
diff --git a/pkg/analysis_server/test/domain_server_test.dart b/pkg/analysis_server/test/domain_server_test.dart
index f7f1fda..1d8389f 100644
--- a/pkg/analysis_server/test/domain_server_test.dart
+++ b/pkg/analysis_server/test/domain_server_test.dart
@@ -67,14 +67,9 @@
     });
 
     test('shutdown', () async {
-      expect(server.running, isTrue);
-      // send request
       var request = new ServerShutdownParams().toRequest('0');
       var response = await serverChannel.sendRequest(request);
       expect(response, isResponseSuccess('0'));
-
-      // server is down
-      expect(server.running, isFalse);
     });
   });
 }
diff --git a/pkg/analysis_server/test/edit/fixes_test.dart b/pkg/analysis_server/test/edit/fixes_test.dart
index 4d07618..c9c5eaa 100644
--- a/pkg/analysis_server/test/edit/fixes_test.dart
+++ b/pkg/analysis_server/test/edit/fixes_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -35,11 +35,12 @@
     createProject();
     addTestFile('''
 main() {
-  Future<String> x = null;
+  Completer<String> x = null;
 }
 ''');
     await waitForTasksFinished();
-    List<AnalysisErrorFixes> errorFixes = await _getFixesAt('Future<String>');
+    List<AnalysisErrorFixes> errorFixes =
+        await _getFixesAt('Completer<String>');
     expect(errorFixes, hasLength(1));
     AnalysisError error = errorFixes[0].error;
     expect(error.severity, AnalysisErrorSeverity.WARNING);
@@ -130,7 +131,7 @@
         handler: analysisHandler);
 
     // Configure the test file.
-    testFile = resourceProvider.convertPath('/aaa/main.dart');
+    testFile = convertPath('/aaa/main.dart');
     testCode = 'main() { new Foo(); }';
     _addOverlay(testFile, testCode);
 
diff --git a/pkg/analysis_server/test/integration/analysis/get_errors_nonStandard_sdk_test.dart b/pkg/analysis_server/test/integration/analysis/get_errors_nonStandard_sdk_test.dart
index be6e77a..4b102a6 100644
--- a/pkg/analysis_server/test/integration/analysis/get_errors_nonStandard_sdk_test.dart
+++ b/pkg/analysis_server/test/integration/analysis/get_errors_nonStandard_sdk_test.dart
@@ -5,13 +5,11 @@
 import 'dart:async';
 import 'dart:io';
 
-import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:path/path.dart' as path;
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../../mock_sdk.dart';
 import '../support/integration_tests.dart';
 
 main() {
@@ -28,42 +26,56 @@
 class AnalysisDomainGetErrorsTest
     extends AbstractAnalysisServerIntegrationTest {
   String createNonStandardSdk() {
-    MockSdkLibrary fakeLibrary =
-        new MockSdkLibrary('dart:fake', '/lib/fake/fake.dart', '');
-    String sdkPath = path.join(sourceDirectory.path, 'sdk');
-    StringBuffer librariesContent = new StringBuffer();
-    librariesContent.writeln(
-        'final Map<String, LibraryInfo> LIBRARIES = const <String, LibraryInfo> {');
-    MockSdk.LIBRARIES.toList()
-      ..add(fakeLibrary)
-      ..forEach((SdkLibrary library) {
-        List<String> components = path.posix.split(library.path);
-        components[0] = sdkPath;
-        String libraryPath = path.joinAll(components);
-        new Directory(path.dirname(libraryPath)).createSync(recursive: true);
-        new File(libraryPath)
-            .writeAsStringSync((library as MockSdkLibrary).content);
+    var sdkPath = path.join(sourceDirectory.path, 'sdk');
 
-        String relativePath = path.joinAll(components.sublist(2));
-        librariesContent.write('"');
-        librariesContent
-            .write(library.shortName.substring(5)); // Remove the 'dart:' prefix
-        librariesContent.write('": const LibraryInfo("');
-        librariesContent.write(relativePath);
-        librariesContent.writeln('"),');
-      });
-    librariesContent.writeln('};');
+    new Directory(path.join(sdkPath, 'lib', 'core'))
+        .createSync(recursive: true);
+    new Directory(path.join(sdkPath, 'lib', 'async'))
+        .createSync(recursive: true);
+    new Directory(path.join(sdkPath, 'lib', 'fake'))
+        .createSync(recursive: true);
 
-    String librariesPath = path.joinAll([
+    new File(path.join(sdkPath, 'lib', 'core', 'core.dart'))
+        .writeAsStringSync(r'''
+library dart.core;
+import 'dart:async';
+class bool {}
+class double {}
+class int {}
+class num {}
+class Object {}
+class Map<K, V> {}
+class Null {}
+class String {}
+class Type {}
+''');
+
+    new File(path.join(sdkPath, 'lib', 'async', 'async.dart'))
+        .writeAsStringSync(r'''
+library dart.async;
+class Future<T> {}
+''');
+
+    new File(path.join(sdkPath, 'lib', 'fake', 'fake.dart'))
+        .writeAsStringSync(r'''
+class Fake {} 
+''');
+
+    var libsDir = path.join(
       sdkPath,
       'lib',
       '_internal',
       'sdk_library_metadata',
       'lib',
-      'libraries.dart'
-    ]);
-    new Directory(path.dirname(librariesPath)).createSync(recursive: true);
-    new File(librariesPath).writeAsStringSync(librariesContent.toString());
+    );
+    new Directory(libsDir).createSync(recursive: true);
+    new File(path.join(libsDir, 'libraries.dart')).writeAsStringSync(r'''
+final LIBRARIES = const <String, LibraryInfo> {
+  "core":  const LibraryInfo("core/core.dart"),
+  "async": const LibraryInfo("async/async.dart"),
+  "fake":  const LibraryInfo("fake/fake.dart"),
+};
+''');
 
     return sdkPath;
   }
diff --git a/pkg/analysis_server/test/integration/analysis/hint_sdk_version_async_exported_from_core_test.dart b/pkg/analysis_server/test/integration/analysis/hint_sdk_version_async_exported_from_core_test.dart
new file mode 100644
index 0000000..6703374
--- /dev/null
+++ b/pkg/analysis_server/test/integration/analysis/hint_sdk_version_async_exported_from_core_test.dart
@@ -0,0 +1,65 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import '../support/integration_tests.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(SdkVersionAsyncExportedFromCoreIntegrationTest);
+  });
+}
+
+@reflectiveTest
+class SdkVersionAsyncExportedFromCoreIntegrationTest
+    extends AbstractAnalysisServerIntegrationTest {
+  test_update_pubspec() async {
+    var pubspecPath = sourcePath('pubspec.yaml');
+    writeFile(pubspecPath, r'''
+name: test
+environment:
+  sdk: ^2.0.0
+''');
+
+    var testPath = sourcePath('lib/test.dart');
+    writeFile(testPath, '''
+Future<int> zero() async => 0;
+''');
+    standardAnalysisSetup();
+
+    // There is a hint with this SDK version constraint.
+    await analysisFinished;
+    expect(currentAnalysisErrors[testPath], hasLength(1));
+
+    // 2.0.0 -> 2.1.0
+    {
+      writeFile(pubspecPath, r'''
+name: test
+environment:
+  sdk: ^2.1.0
+''');
+
+      // The pubspec.yaml file change has been noticed and processed.
+      // No more hints.
+      await analysisFinished;
+      expect(currentAnalysisErrors[testPath], isEmpty);
+    }
+
+    // 2.1.0 -> 2.0.0
+    {
+      writeFile(pubspecPath, r'''
+name: test
+environment:
+  sdk: ^2.0.0
+''');
+
+      // The pubspec.yaml file change has been noticed and processed.
+      // There is a hint again.
+      await analysisFinished;
+      expect(currentAnalysisErrors[testPath], hasLength(1));
+    }
+  }
+}
diff --git a/pkg/analysis_server/test/integration/analysis/test_all.dart b/pkg/analysis_server/test/integration/analysis/test_all.dart
index 99021da..d85814a 100644
--- a/pkg/analysis_server/test/integration/analysis/test_all.dart
+++ b/pkg/analysis_server/test/integration/analysis/test_all.dart
@@ -15,6 +15,8 @@
 import 'get_reachable_sources_test.dart' as get_reachable_sources_test;
 import 'highlights2_test.dart' as highlights2_test;
 import 'highlights_test.dart' as highlights_test;
+import 'hint_sdk_version_async_exported_from_core_test.dart'
+    as hint_sdk_version_async_exported_from_core_test;
 import 'lint_test.dart' as lint_test;
 import 'navigation_test.dart' as navigation_test;
 import 'occurrences_test.dart' as occurrences_test;
@@ -47,6 +49,7 @@
     get_reachable_sources_test.main();
     highlights2_test.main();
     highlights_test.main();
+    hint_sdk_version_async_exported_from_core_test.main();
     lint_test.main();
     navigation_test.main();
     occurrences_test.main();
diff --git a/pkg/analysis_server/test/lsp/completion_test.dart b/pkg/analysis_server/test/lsp/completion_test.dart
new file mode 100644
index 0000000..aa7002c
--- /dev/null
+++ b/pkg/analysis_server/test/lsp/completion_test.dart
@@ -0,0 +1,276 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'server_abstract.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CompletionTest);
+  });
+}
+
+@reflectiveTest
+class CompletionTest extends AbstractLspAnalysisServerTest {
+  test_completionKinds_default() async {
+    newFile(join(projectFolderPath, 'file.dart'));
+    newFolder(join(projectFolderPath, 'folder'));
+
+    final content = "import '^';";
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(content));
+    final res = await getCompletion(mainFileUri, positionFromMarker(content));
+
+    final file = res.singleWhere((c) => c.label == 'file.dart');
+    final folder = res.singleWhere((c) => c.label == 'folder/');
+    final builtin = res.singleWhere((c) => c.label == 'dart:core');
+    // Default capabilities include File + Module but not Folder.
+    expect(file.kind, equals(CompletionItemKind.File));
+    // We fall back to Module if Folder isn't supported.
+    expect(folder.kind, equals(CompletionItemKind.Module));
+    expect(builtin.kind, equals(CompletionItemKind.Module));
+  }
+
+  test_completionKinds_imports() async {
+    final content = "import '^';";
+
+    // Tell the server we support some specific CompletionItemKinds.
+    await initialize(textDocumentCapabilities: {
+      'completion': {
+        'completionItemKind': {
+          'valueSet': [
+            CompletionItemKind.File.toJson(),
+            CompletionItemKind.Folder.toJson(),
+            CompletionItemKind.Module.toJson(),
+          ],
+        }
+      },
+    });
+    await openFile(mainFileUri, withoutMarkers(content));
+    final res = await getCompletion(mainFileUri, positionFromMarker(content));
+
+    final file = res.singleWhere((c) => c.label == 'file.dart');
+    final folder = res.singleWhere((c) => c.label == 'folder/');
+    final builtin = res.singleWhere((c) => c.label == 'dart:core');
+    expect(file.kind, equals(CompletionItemKind.File));
+    expect(folder.kind, equals(CompletionItemKind.Folder));
+    expect(builtin.kind, equals(CompletionItemKind.Module));
+  }
+
+  test_completionKinds_supportedSubset() async {
+    final content = '''
+    class MyClass {
+      String abcdefghij;
+    }
+
+    main() {
+      MyClass a;
+      a.abc^
+    }
+    ''';
+
+    // Tell the server we only support the Field CompletionItemKind.
+    await initialize(textDocumentCapabilities: {
+      'completion': {
+        'completionItemKind': {
+          'valueSet': [
+            CompletionItemKind.Field.toJson(),
+          ],
+        }
+      },
+    });
+    await openFile(mainFileUri, withoutMarkers(content));
+    final res = await getCompletion(mainFileUri, positionFromMarker(content));
+    final kinds = res.map((item) => item.kind).toList();
+
+    // Ensure we only get nulls or Fields (the sample code contains Classes).
+    expect(
+      kinds,
+      everyElement(anyOf(isNull, equals(CompletionItemKind.Field))),
+    );
+  }
+
+  test_gettersAndSetters() async {
+    final content = '''
+    class MyClass {
+      String get justGetter => '';
+      String set justSetter(String value) {}
+      String get getterAndSetter => '';
+      String set getterAndSetter(String value) {}
+    }
+
+    main() {
+      MyClass a;
+      a.^
+    }
+    ''';
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(content));
+    final res = await getCompletion(mainFileUri, positionFromMarker(content));
+    final getter = res.singleWhere((c) => c.label == 'justGetter');
+    final setter = res.singleWhere((c) => c.label == 'justSetter');
+    final both = res.singleWhere((c) => c.label == 'getterAndSetter');
+    expect(getter.detail, equals('String'));
+    expect(setter.detail, equals('String'));
+    expect(both.detail, equals('String'));
+    [getter, setter, both].forEach((item) {
+      expect(item.kind, equals(CompletionItemKind.Property));
+    });
+  }
+
+  test_insideString() async {
+    final content = '''
+    var a = "This is ^a test"
+    ''';
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(content));
+    final res = await getCompletion(mainFileUri, positionFromMarker(content));
+    expect(res, isEmpty);
+  }
+
+  test_isDeprecated_notSupported() async {
+    final content = '''
+    class MyClass {
+      @deprecated
+      String abcdefghij;
+    }
+
+    main() {
+      MyClass a;
+      a.abc^
+    }
+    ''';
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(content));
+    final res = await getCompletion(mainFileUri, positionFromMarker(content));
+    final item = res.singleWhere((c) => c.label == 'abcdefghij');
+    expect(item.deprecated, isNull);
+    // If the does not say it supports the deprecated flag, we should show
+    // '(deprecated)' in the details.
+    expect(item.detail.toLowerCase(), contains('deprecated'));
+  }
+
+  test_isDeprecated_supported() async {
+    final content = '''
+    class MyClass {
+      @deprecated
+      String abcdefghij;
+    }
+
+    main() {
+      MyClass a;
+      a.abc^
+    }
+    ''';
+
+    await initialize(textDocumentCapabilities: {
+      'completion': {
+        'completionItem': {
+          'deprecatedSupport': true,
+        }
+      },
+    });
+    await openFile(mainFileUri, withoutMarkers(content));
+    final res = await getCompletion(mainFileUri, positionFromMarker(content));
+    final item = res.singleWhere((c) => c.label == 'abcdefghij');
+    expect(item.deprecated, isTrue);
+    // If the client says it supports the deprecated flag, we should not show
+    // deprecated in the details.
+    expect(item.detail, isNot(contains('deprecated')));
+  }
+
+  test_plainText_simple() async {
+    final content = '''
+    class MyClass {
+      String abcdefghij;
+    }
+
+    main() {
+      MyClass a;
+      a.abc^
+    }
+    ''';
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(content));
+    final res = await getCompletion(mainFileUri, positionFromMarker(content));
+    expect(res.any((c) => c.label == 'abcdefghij'), isTrue);
+    final item = res.singleWhere((c) => c.label == 'abcdefghij');
+    expect(item.insertTextFormat, equals(InsertTextFormat.PlainText));
+    // ignore: deprecated_member_use
+    expect(item.insertText, anyOf(equals('abcdefghij'), isNull));
+    final updated = applyEdits(withoutMarkers(content), [item.textEdit]);
+    expect(updated, contains('a.abcdefghij'));
+  }
+
+  test_snippet_simple() async {
+    final content = '''
+    class MyClass {
+      String abcdefghij;
+    }
+
+    main() {
+      MyClass a;
+      a.abc^
+    }
+    ''';
+
+    await initialize(textDocumentCapabilities: {
+      'completion': {
+        'completionItem': {
+          'snippetSupport': true,
+        }
+      }
+    });
+    await openFile(mainFileUri, withoutMarkers(content));
+    final res = await getCompletion(mainFileUri, positionFromMarker(content));
+    expect(res.any((c) => c.label == 'abcdefghij'), isTrue);
+    final item = res.singleWhere((c) => c.label == 'abcdefghij');
+    // ignore: deprecated_member_use
+    expect(item.insertText, anyOf(equals('abcdefghij'), isNull));
+    expect(item.insertTextFormat, equals(InsertTextFormat.Snippet));
+    final updated = applyEdits(withoutMarkers(content), [item.textEdit]);
+    expect(updated, contains('a.abcdefghij'));
+    expect(item.kind, equals(CompletionItemKind.Field));
+  }
+
+  @failingTest
+  test_snippet_withSelection() async {
+    // TODO(dantup): Implement snippet functionality + test.
+    // Like above, but one that actually has a selectionOffset and results in
+    // a snippet with tabstop.
+    fail('NYI');
+  }
+
+  test_unopenFile() async {
+    final content = '''
+    class MyClass {
+      String abcdefghij;
+    }
+
+    main() {
+      MyClass a;
+      a.abc^
+    }
+    ''';
+
+    newFile(mainFilePath, content: withoutMarkers(content));
+    await initialize();
+    final res = await getCompletion(mainFileUri, positionFromMarker(content));
+    expect(res.any((c) => c.label == 'abcdefghij'), isTrue);
+    final item = res.singleWhere((c) => c.label == 'abcdefghij');
+    expect(item.insertTextFormat, equals(InsertTextFormat.PlainText));
+    // ignore: deprecated_member_use
+    expect(item.insertText, anyOf(equals('abcdefghij'), isNull));
+    final updated = applyEdits(withoutMarkers(content), [item.textEdit]);
+    expect(updated, contains('a.abcdefghij'));
+  }
+}
diff --git a/pkg/analysis_server/test/lsp/definition_test.dart b/pkg/analysis_server/test/lsp/definition_test.dart
new file mode 100644
index 0000000..4e99a7f
--- /dev/null
+++ b/pkg/analysis_server/test/lsp/definition_test.dart
@@ -0,0 +1,89 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'server_abstract.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(DefinitionTest);
+  });
+}
+
+@reflectiveTest
+class DefinitionTest extends AbstractLspAnalysisServerTest {
+  test_acrossFiles() async {
+    final mainContents = '''
+    import 'referenced.dart';
+
+    main() {
+      fo^o();
+    }
+    ''';
+
+    final referencedContents = '''
+    /// Ensure the function is on a line that
+    /// does not exist in the mainContents file
+    /// to ensure we're translating offsets to line/col
+    /// using the correct file's LineInfo
+    /// ...
+    /// ...
+    /// ...
+    /// ...
+    /// ...
+    [[foo]]() {}
+    ''';
+
+    final referencedFileUri =
+        Uri.file(join(projectFolderPath, 'lib', 'referenced.dart'));
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(mainContents));
+    await openFile(referencedFileUri, withoutMarkers(referencedContents));
+    final res =
+        await getDefinition(mainFileUri, positionFromMarker(mainContents));
+
+    expect(res, hasLength(1));
+    Location loc = res.single;
+    expect(loc.range, equals(rangeFromMarkers(referencedContents)));
+    expect(loc.uri, equals(referencedFileUri.toString()));
+  }
+
+  test_singleFile() async {
+    final contents = '''
+    [[foo]]() {
+      fo^o();
+    }
+    ''';
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(contents));
+    final res = await getDefinition(mainFileUri, positionFromMarker(contents));
+
+    expect(res, hasLength(1));
+    Location loc = res.single;
+    expect(loc.range, equals(rangeFromMarkers(contents)));
+    expect(loc.uri, equals(mainFileUri.toString()));
+  }
+
+  test_unopenFile() async {
+    final contents = '''
+    [[foo]]() {
+      fo^o();
+    }
+    ''';
+
+    newFile(mainFilePath, content: withoutMarkers(contents));
+    await initialize();
+    final res = await getDefinition(mainFileUri, positionFromMarker(contents));
+
+    expect(res, hasLength(1));
+    Location loc = res.single;
+    expect(loc.range, equals(rangeFromMarkers(contents)));
+    expect(loc.uri, equals(mainFileUri.toString()));
+  }
+}
diff --git a/pkg/analysis_server/test/lsp/diagnostic_test.dart b/pkg/analysis_server/test/lsp/diagnostic_test.dart
new file mode 100644
index 0000000..430b8a1
--- /dev/null
+++ b/pkg/analysis_server/test/lsp/diagnostic_test.dart
@@ -0,0 +1,45 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'server_abstract.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(DiagnosticTest);
+  });
+}
+
+@reflectiveTest
+class DiagnosticTest extends AbstractLspAnalysisServerTest {
+  test_afterDocumentEdits() async {
+    const initialContents = 'int a = 1;';
+    newFile(mainFilePath, content: initialContents);
+
+    await initialize();
+    final initialDiagnostics = await waitForDiagnostics(mainFileUri);
+    expect(initialDiagnostics, hasLength(0));
+
+    await openFile(mainFileUri, initialContents);
+    await replaceFile(mainFileUri, 'String a = 1;');
+    final updatedDiagnostics = await waitForDiagnostics(mainFileUri);
+    expect(updatedDiagnostics, hasLength(1));
+  }
+
+  test_initialAnalysis() async {
+    newFile(mainFilePath, content: 'String a = 1;');
+
+    await initialize();
+    final diagnostics = await waitForDiagnostics(mainFileUri);
+    expect(diagnostics, hasLength(1));
+    final diagnostic = diagnostics.first;
+    expect(diagnostic.code, equals('invalid_assignment'));
+    expect(diagnostic.range.start.line, equals(0));
+    expect(diagnostic.range.start.character, equals(11));
+    expect(diagnostic.range.end.line, equals(0));
+    expect(diagnostic.range.end.character, equals(12));
+  }
+}
diff --git a/pkg/analysis_server/test/lsp/document_symbols_test.dart b/pkg/analysis_server/test/lsp/document_symbols_test.dart
new file mode 100644
index 0000000..752a160
--- /dev/null
+++ b/pkg/analysis_server/test/lsp/document_symbols_test.dart
@@ -0,0 +1,109 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'server_abstract.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(DocumentSymbolsTest);
+  });
+}
+
+@reflectiveTest
+class DocumentSymbolsTest extends AbstractLspAnalysisServerTest {
+  test_hierarchical() async {
+    const content = '''
+    String topLevel = '';
+    class MyClass {
+      int myField;
+      MyClass(this.myField);
+      myMethod() {}
+    }
+    ''';
+    newFile(mainFilePath, content: content);
+    await initialize(textDocumentCapabilities: {
+      'documentSymbol': {
+        'hierarchicalDocumentSymbolSupport': true,
+      },
+    });
+
+    final result = await getDocumentSymbols(mainFileUri.toString());
+    final symbols = result.map(
+      (docsymbols) => docsymbols,
+      (symbolInfos) => throw 'Expected DocumentSymbols, got SymbolInformations',
+    );
+
+    expect(symbols, hasLength(2));
+
+    final topLevel = symbols[0];
+    expect(topLevel.name, equals('topLevel'));
+    expect(topLevel.kind, equals(SymbolKind.Variable));
+
+    final myClass = symbols[1];
+    expect(myClass.name, equals('MyClass'));
+    expect(myClass.kind, equals(SymbolKind.Class));
+    expect(myClass.children, hasLength(3));
+
+    final field = myClass.children[0];
+    expect(field.name, equals('myField'));
+    expect(field.kind, equals(SymbolKind.Field));
+
+    final constructor = myClass.children[1];
+    expect(constructor.name, equals('MyClass'));
+    expect(constructor.kind, equals(SymbolKind.Constructor));
+
+    final method = myClass.children[2];
+    expect(method.name, equals('myMethod'));
+    expect(method.kind, equals(SymbolKind.Method));
+  }
+
+  test_flat() async {
+    const content = '''
+    String topLevel = '';
+    class MyClass {
+      int myField;
+      MyClass(this.myField);
+      myMethod() {}
+    }
+    ''';
+    newFile(mainFilePath, content: content);
+    await initialize();
+
+    final result = await getDocumentSymbols(mainFileUri.toString());
+    final symbols = result.map(
+      (docsymbols) => throw 'Expected SymbolInformations, got DocumentSymbols',
+      (symbolInfos) => symbolInfos,
+    );
+    expect(symbols, hasLength(5));
+
+    final topLevel = symbols[0];
+    expect(topLevel.name, equals('topLevel'));
+    expect(topLevel.kind, equals(SymbolKind.Variable));
+    expect(topLevel.containerName, isNull);
+
+    final myClass = symbols[1];
+    expect(myClass.name, equals('MyClass'));
+    expect(myClass.kind, equals(SymbolKind.Class));
+    expect(myClass.containerName, isNull);
+
+    final field = symbols[2];
+    expect(field.name, equals('myField'));
+    expect(field.kind, equals(SymbolKind.Field));
+    expect(field.containerName, equals(myClass.name));
+
+    final constructor = symbols[3];
+    expect(constructor.name, equals('MyClass'));
+    expect(constructor.kind, equals(SymbolKind.Constructor));
+    expect(constructor.containerName, equals(myClass.name));
+
+    final method = symbols[4];
+    expect(method.name, equals('myMethod'));
+    expect(method.kind, equals(SymbolKind.Method));
+    expect(method.containerName, equals(myClass.name));
+  }
+}
diff --git a/pkg/analysis_server/test/lsp/file_modification_test.dart b/pkg/analysis_server/test/lsp/file_modification_test.dart
new file mode 100644
index 0000000..a7ec93c
--- /dev/null
+++ b/pkg/analysis_server/test/lsp/file_modification_test.dart
@@ -0,0 +1,110 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'server_abstract.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FileModificationTest);
+  });
+}
+
+@reflectiveTest
+class FileModificationTest extends AbstractLspAnalysisServerTest {
+  test_change_badPosition() async {
+    final contents = '';
+    await initialize();
+    await openFile(mainFileUri, contents);
+
+    // Since this is a notification and not a request, the server cannot
+    // respond with an error, but instead sends a ShowMessage notification
+    // to alert the user to something failing.
+    final error = await expectErrorNotification<ShowMessageParams>(() async {
+      await changeFile(mainFileUri, [
+        new TextDocumentContentChangeEvent(
+          new Range(new Position(999, 999), new Position(999, 999)),
+          null,
+          '   ',
+        )
+      ]);
+    });
+
+    expect(error.message, contains('Invalid line'));
+  }
+
+  test_change_fullContents() async {
+    final initialContent = 'int a = 1;';
+    final updatedContent = 'int a = 2;';
+
+    await initialize();
+    await openFile(mainFileUri, initialContent);
+    await replaceFile(mainFileUri, updatedContent);
+    expect(server.fileContentOverlay[mainFilePath], equals(updatedContent));
+  }
+
+  test_change_incremental() async {
+    final initialContent = '0123456789\n0123456789';
+    final expectedUpdatedContent = '0123456789\n01234   89';
+
+    await initialize();
+    await openFile(mainFileUri, initialContent);
+    await changeFile(mainFileUri, [
+      // Replace line1:5-1:8 with spaces.
+      new TextDocumentContentChangeEvent(
+        new Range(new Position(1, 5), new Position(1, 8)),
+        null,
+        '   ',
+      )
+    ]);
+    expect(server.fileContentOverlay[mainFilePath],
+        equals(expectedUpdatedContent));
+  }
+
+  test_change_unopenedFile() async {
+    // It's not valid for a client to send a request to modify a file that it
+    // has not opened, but Visual Studio has done it in the past so we should
+    // ensure it generates an obvious error that the user can understand.
+    final simpleEdit = new TextDocumentContentChangeEvent(
+      new Range(new Position(1, 1), new Position(1, 1)),
+      null,
+      'test',
+    );
+    await initialize();
+    final notificationParams = await expectErrorNotification<ShowMessageParams>(
+      () => changeFile(mainFileUri, [simpleEdit]),
+    );
+    expect(notificationParams, isNotNull);
+    expect(
+      notificationParams.message,
+      allOf(
+        contains('because the file was not previously opened'),
+        contains(mainFilePath),
+      ),
+    );
+  }
+
+  test_close() async {
+    final initialContent = 'int a = 1;';
+    final updatedContent = 'int a = 2;';
+
+    await initialize();
+    await openFile(mainFileUri, initialContent);
+    await replaceFile(mainFileUri, updatedContent);
+    await closeFile(mainFileUri);
+    expect(server.fileContentOverlay[mainFilePath], isNull);
+  }
+
+  test_open() async {
+    const testContent = 'CONTENT';
+
+    await initialize();
+    expect(server.fileContentOverlay[mainFilePath], isNull);
+    await openFile(mainFileUri, testContent);
+    expect(server.fileContentOverlay[mainFilePath], equals(testContent));
+  }
+}
diff --git a/pkg/analysis_server/test/lsp/format_test.dart b/pkg/analysis_server/test/lsp/format_test.dart
new file mode 100644
index 0000000..4b58805
--- /dev/null
+++ b/pkg/analysis_server/test/lsp/format_test.dart
@@ -0,0 +1,136 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import '../tool/lsp_spec/matchers.dart';
+import 'server_abstract.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FormatTest);
+  });
+}
+
+@reflectiveTest
+class FormatTest extends AbstractLspAnalysisServerTest {
+  test_alreadyFormatted() async {
+    const contents = '''main() {
+  print('test');
+}
+''';
+    await initialize();
+    await openFile(mainFileUri, contents);
+
+    final formatEdits = await formatDocument(mainFileUri.toString());
+    expect(formatEdits, isNull);
+  }
+
+  test_formatOnType_simple() async {
+    const contents = '''
+    main  ()
+    {
+
+        print('test');
+    ^}
+    ''';
+    final expected = '''main() {
+  print('test');
+}
+''';
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(contents));
+
+    final formatEdits = await formatOnType(
+        mainFileUri.toString(), positionFromMarker(contents), '}');
+    expect(formatEdits, isNotNull);
+    final formattedContents = applyEdits(contents, formatEdits);
+    expect(formattedContents, equals(expected));
+  }
+
+  test_invalidSyntax() async {
+    const contents = '''main(((( {
+  print('test');
+}
+''';
+    await initialize();
+    await openFile(mainFileUri, contents);
+
+    final formatEdits = await formatDocument(mainFileUri.toString());
+    expect(formatEdits, isNull);
+  }
+
+  test_path_doesNotExist() async {
+    await initialize();
+
+    await expectLater(
+      formatDocument(
+          new Uri.file(join(projectFolderPath, 'missing.dart')).toString()),
+      throwsA(isResponseError(ServerErrorCodes.InvalidFilePath)),
+    );
+  }
+
+  test_path_invalidFormat() async {
+    await initialize();
+
+    await expectLater(
+      // Add some invalid path characters to the end of a valid file:// URI.
+      formatDocument(mainFileUri.toString() + '***'),
+      throwsA(isResponseError(ServerErrorCodes.InvalidFilePath)),
+    );
+  }
+
+  test_path_notFileScheme() async {
+    await initialize();
+
+    await expectLater(
+      formatDocument('a:/a.a'),
+      throwsA(isResponseError(ServerErrorCodes.InvalidFilePath)),
+    );
+  }
+
+  test_simple() async {
+    const contents = '''
+    main  ()
+    {
+
+        print('test');
+    }
+    ''';
+    final expected = '''main() {
+  print('test');
+}
+''';
+    await initialize();
+    await openFile(mainFileUri, contents);
+
+    final formatEdits = await formatDocument(mainFileUri.toString());
+    expect(formatEdits, isNotNull);
+    final formattedContents = applyEdits(contents, formatEdits);
+    expect(formattedContents, equals(expected));
+  }
+
+  test_unopenFile() async {
+    const contents = '''
+    main  ()
+    {
+
+        print('test');
+    }
+    ''';
+    final expected = '''main() {
+  print('test');
+}
+''';
+    newFile(mainFilePath, content: contents);
+    await initialize();
+
+    final formatEdits = await formatDocument(mainFileUri.toString());
+    expect(formatEdits, isNotNull);
+    final formattedContents = applyEdits(contents, formatEdits);
+    expect(formattedContents, equals(expected));
+  }
+}
diff --git a/pkg/analysis_server/test/lsp/hover_test.dart b/pkg/analysis_server/test/lsp/hover_test.dart
new file mode 100644
index 0000000..1905922
--- /dev/null
+++ b/pkg/analysis_server/test/lsp/hover_test.dart
@@ -0,0 +1,219 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import '../tool/lsp_spec/matchers.dart';
+import 'server_abstract.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(HoverTest);
+  });
+}
+
+@reflectiveTest
+class HoverTest extends AbstractLspAnalysisServerTest {
+  Future<void> initializeSupportingMarkupContent([
+    List<MarkupKind> formats = const [MarkupKind.Markdown],
+  ]) async {
+    await initialize(textDocumentCapabilities: {
+      'hover': {'contentFormat': formats.map((f) => f.toJson())}
+    });
+  }
+
+  test_hover_bad_position() async {
+    await initialize();
+    await openFile(mainFileUri, '');
+    await expectLater(
+      () => getHover(mainFileUri, new Position(999, 999)),
+      throwsA(isResponseError(ServerErrorCodes.InvalidFileLineCol)),
+    );
+  }
+
+  test_markdown_isFormattedForDisplay() async {
+    final content = '''
+    /// This is a string.
+    /// 
+    /// {@template foo}
+    /// With some [refs] and some
+    /// [links](https://www.dartlang.org/)
+    /// {@endTemplate foo}
+    /// 
+    /// ```dart sample
+    /// print();
+    /// ```
+    String [[a^bc]];
+    ''';
+
+    final expectedHoverContent = '''
+```dart
+String abc
+```
+
+This is a string.
+
+With some [refs] and some
+[links](https://www.dartlang.org/)
+
+```dart
+print();
+```
+    '''
+        .trim();
+
+    await initializeSupportingMarkupContent([MarkupKind.Markdown]);
+    await openFile(mainFileUri, withoutMarkers(content));
+    final hover = await getHover(mainFileUri, positionFromMarker(content));
+    expect(hover, isNotNull);
+    expect(hover.range, equals(rangeFromMarkers(content)));
+    expect(hover.contents, isNotNull);
+    final markup = _getMarkupContents(hover);
+    expect(markup.kind, equals(MarkupKind.Markdown));
+    expect(markup.value, equals(expectedHoverContent));
+  }
+
+  test_markdown_simple() async {
+    final content = '''
+    /// This is a string.
+    String [[a^bc]];
+    ''';
+
+    await initializeSupportingMarkupContent();
+    await openFile(mainFileUri, withoutMarkers(content));
+    final hover = await getHover(mainFileUri, positionFromMarker(content));
+    expect(hover, isNotNull);
+    expect(hover.range, equals(rangeFromMarkers(content)));
+    expect(hover.contents, isNotNull);
+    final markup = _getMarkupContents(hover);
+    expect(markup.kind, equals(MarkupKind.Markdown));
+    expect(markup.value, contains('This is a string.'));
+  }
+
+  test_noElement() async {
+    final content = '''
+    String abc;
+
+    ^
+
+    int a;
+    ''';
+
+    await initializeSupportingMarkupContent();
+    await openFile(mainFileUri, withoutMarkers(content));
+    var hover = await getHover(mainFileUri, positionFromMarker(content));
+    expect(hover, isNull);
+  }
+
+  test_plainText_simple() async {
+    final content = '''
+    /// This is a string.
+    String [[a^bc]];
+    ''';
+
+    await initializeSupportingMarkupContent([MarkupKind.PlainText]);
+    await openFile(mainFileUri, withoutMarkers(content));
+    final hover = await getHover(mainFileUri, positionFromMarker(content));
+    expect(hover, isNotNull);
+    expect(hover.range, equals(rangeFromMarkers(content)));
+    expect(hover.contents, isNotNull);
+    // Ensure we got PlainText back as the type, even though we're sending the
+    // same markdown content.
+    final markup = _getMarkupContents(hover);
+    expect(markup.kind, equals(MarkupKind.PlainText));
+    expect(markup.value, contains('This is a string.'));
+  }
+
+  test_string_noDocComment() async {
+    final content = '''
+    String [[a^bc]];
+    ''';
+
+    final expectedHoverContent = '''
+```dart
+String abc
+```
+    '''
+        .trim();
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(content));
+    final hover = await getHover(mainFileUri, positionFromMarker(content));
+    expect(hover, isNotNull);
+    expect(hover.range, equals(rangeFromMarkers(content)));
+    expect(hover.contents, isNotNull);
+    expect(_getStringContents(hover), equals(expectedHoverContent));
+  }
+
+  test_string_reflectsLatestEdits() async {
+    final original = '''
+    /// Original string.
+    String [[a^bc]];
+    ''';
+    final updated = '''
+    /// Updated string.
+    String [[a^bc]];
+    ''';
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(original));
+    var hover = await getHover(mainFileUri, positionFromMarker(original));
+    var contents = _getStringContents(hover);
+    expect(contents, contains('Original'));
+
+    await replaceFile(mainFileUri, withoutMarkers(updated));
+    hover = await getHover(mainFileUri, positionFromMarker(updated));
+    contents = _getStringContents(hover);
+    expect(contents, contains('Updated'));
+  }
+
+  test_string_simple() async {
+    final content = '''
+    /// This is a string.
+    String [[a^bc]];
+    ''';
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(content));
+    final hover = await getHover(mainFileUri, positionFromMarker(content));
+    expect(hover, isNotNull);
+    expect(hover.range, equals(rangeFromMarkers(content)));
+    expect(hover.contents, isNotNull);
+    final contents = _getStringContents(hover);
+    expect(contents, contains('This is a string.'));
+  }
+
+  test_unopenFile() async {
+    final content = '''
+    /// This is a string.
+    String [[a^bc]];
+    ''';
+
+    newFile(mainFilePath, content: withoutMarkers(content));
+    await initialize();
+    final hover = await getHover(mainFileUri, positionFromMarker(content));
+    expect(hover, isNotNull);
+    expect(hover.range, equals(rangeFromMarkers(content)));
+    expect(hover.contents, isNotNull);
+    final markup = _getStringContents(hover);
+    expect(markup, contains('This is a string.'));
+  }
+
+  MarkupContent _getMarkupContents(Hover hover) {
+    return hover.contents.map(
+      (t1) => throw 'Hover contents were String, not MarkupContent',
+      (t2) => t2,
+    );
+  }
+
+  String _getStringContents(Hover hover) {
+    return hover.contents.map(
+      (t1) => t1,
+      (t2) => throw 'Hover contents were MarkupContent, not String',
+    );
+  }
+}
diff --git a/pkg/analysis_server/test/lsp/initialization_test.dart b/pkg/analysis_server/test/lsp/initialization_test.dart
new file mode 100644
index 0000000..ed25a40
--- /dev/null
+++ b/pkg/analysis_server/test/lsp/initialization_test.dart
@@ -0,0 +1,81 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'server_abstract.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(InitializationTest);
+  });
+}
+
+@reflectiveTest
+class InitializationTest extends AbstractLspAnalysisServerTest {
+  test_initialize() async {
+    final response = await initialize();
+    expect(response, isNotNull);
+    expect(response.error, isNull);
+    expect(response.result, isNotNull);
+    expect(response.result, TypeMatcher<InitializeResult>());
+    InitializeResult result = response.result;
+    expect(result.capabilities, isNotNull);
+    // Check some basic capabilities that are unlikely to change.
+    expect(result.capabilities.textDocumentSync, isNotNull);
+    result.capabilities.textDocumentSync.map(
+      (options) {
+        // We'll always request open/closed notifications and incremental updates.
+        expect(options.openClose, isTrue);
+        expect(options.change, equals(TextDocumentSyncKind.Incremental));
+      },
+      (_) =>
+          throw 'Expected textDocumentSync capabilities to be a $TextDocumentSyncOptions',
+    );
+  }
+
+  test_initialize_onlyAllowedOnce() async {
+    await initialize();
+    final response = await initialize();
+    expect(response, isNotNull);
+    expect(response.result, isNull);
+    expect(response.error, isNotNull);
+    expect(
+        response.error.code, equals(ServerErrorCodes.ServerAlreadyInitialized));
+  }
+
+  test_uninitialized_dropsNotifications() async {
+    final notification =
+        makeNotification(new Method.fromJson('randomNotification'), null);
+    final nextNotification = channel.errorNotificationsFromServer.first;
+    channel.sendNotificationToServer(notification);
+
+    // Wait up to 1sec to ensure no error/log notifications were sent back.
+    var didTimeout = false;
+    final notificationFromServer = await nextNotification.timeout(
+      const Duration(seconds: 1),
+      onTimeout: () {
+        didTimeout = true;
+      },
+    );
+
+    expect(notificationFromServer, isNull);
+    expect(didTimeout, isTrue);
+  }
+
+  test_uninitialized_rejectsRequests() async {
+    final request = makeRequest(new Method.fromJson('randomRequest'), null);
+    final logParams = await expectErrorNotification<LogMessageParams>(() async {
+      final response = await channel.sendRequestToServer(request);
+      expect(response.id, equals(request.id));
+      expect(response.result, isNull);
+      expect(response.error, isNotNull);
+      expect(response.error.code, ErrorCodes.ServerNotInitialized);
+    });
+    expect(logParams.type, equals(MessageType.Error));
+  }
+}
diff --git a/pkg/analysis_server/test/lsp/references_test.dart b/pkg/analysis_server/test/lsp/references_test.dart
new file mode 100644
index 0000000..bd36c11
--- /dev/null
+++ b/pkg/analysis_server/test/lsp/references_test.dart
@@ -0,0 +1,141 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'server_abstract.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ReferencesTest);
+  });
+}
+
+@reflectiveTest
+class ReferencesTest extends AbstractLspAnalysisServerTest {
+  test_acrossFiles_includeDeclaration() async {
+    final mainContents = '''
+    import 'referenced.dart';
+
+    main() {
+      [[foo]]();
+    }
+    ''';
+
+    final referencedContents = '''
+    /// Ensure the function is on a line that
+    /// does not exist in the mainContents file
+    /// to ensure we're translating offsets to line/col
+    /// using the correct file's LineInfo
+    /// ...
+    /// ...
+    /// ...
+    /// ...
+    /// ...
+    [[^foo]]() {}
+    ''';
+
+    final referencedFileUri =
+        Uri.file(join(projectFolderPath, 'lib', 'referenced.dart'));
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(mainContents));
+    await openFile(referencedFileUri, withoutMarkers(referencedContents));
+    final res = await getReferences(
+      referencedFileUri,
+      positionFromMarker(referencedContents),
+      includeDeclarations: true,
+    );
+
+    // Ensure both the reference and the declaration are included.
+    expect(res, hasLength(2));
+    expect(
+        res,
+        contains(new Location(
+            mainFileUri.toString(), rangeFromMarkers(mainContents))));
+    expect(
+        res,
+        contains(new Location(referencedFileUri.toString(),
+            rangeFromMarkers(referencedContents))));
+  }
+
+  test_acrossFiles_withoutDeclaration() async {
+    final mainContents = '''
+    import 'referenced.dart';
+
+    main() {
+      [[foo]]();
+    }
+    ''';
+
+    final referencedContents = '''
+    /// Ensure the function is on a line that
+    /// does not exist in the mainContents file
+    /// to ensure we're translating offsets to line/col
+    /// using the correct file's LineInfo
+    /// ...
+    /// ...
+    /// ...
+    /// ...
+    /// ...
+    ^foo() {}
+    ''';
+
+    final referencedFileUri =
+        Uri.file(join(projectFolderPath, 'lib', 'referenced.dart'));
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(mainContents));
+    await openFile(referencedFileUri, withoutMarkers(referencedContents));
+    final res = await getReferences(
+        referencedFileUri, positionFromMarker(referencedContents));
+
+    expect(res, hasLength(1));
+    Location loc = res.single;
+    expect(loc.range, equals(rangeFromMarkers(mainContents)));
+    expect(loc.uri, equals(mainFileUri.toString()));
+  }
+
+  test_singleFile_withoutDeclaration() async {
+    final contents = '''
+    f^oo() {
+      [[foo]]();
+    }
+    ''';
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(contents));
+    final res = await getReferences(mainFileUri, positionFromMarker(contents));
+
+    expect(res, hasLength(1));
+    expect(
+      res,
+      contains(
+        new Location(mainFileUri.toString(), rangeFromMarkers(contents)),
+      ),
+    );
+  }
+
+  test_unopenFile() async {
+    final contents = '''
+    f^oo() {
+      [[foo]]();
+    }
+    ''';
+
+    newFile(mainFilePath, content: withoutMarkers(contents));
+    await initialize();
+    final res = await getReferences(mainFileUri, positionFromMarker(contents));
+
+    expect(res, hasLength(1));
+    expect(
+      res,
+      contains(
+        new Location(mainFileUri.toString(), rangeFromMarkers(contents)),
+      ),
+    );
+  }
+}
diff --git a/pkg/analysis_server/test/lsp/server_abstract.dart b/pkg/analysis_server/test/lsp/server_abstract.dart
new file mode 100644
index 0000000..368b330
--- /dev/null
+++ b/pkg/analysis_server/test/lsp/server_abstract.dart
@@ -0,0 +1,377 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/analysis_server.dart';
+import 'package:analysis_server/src/lsp/lsp_analysis_server.dart';
+import 'package:analysis_server/src/lsp/mapping.dart';
+import 'package:analyzer/instrumentation/instrumentation.dart';
+import 'package:analyzer/source/line_info.dart';
+import 'package:analyzer/src/generated/sdk.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
+import 'package:test/test.dart';
+
+import '../mocks.dart';
+
+const dartLanguageId = 'dart';
+
+/// Useful for debugging locally, setting this to true will cause all JSON
+/// communication to be printed to stdout.
+const debugPrintCommunication = false;
+
+abstract class AbstractLspAnalysisServerTest with ResourceProviderMixin {
+  static const positionMarker = '^';
+  static const rangeMarkerStart = '[[';
+  static const rangeMarkerEnd = ']]';
+  static const allMarkers = [positionMarker, rangeMarkerStart, rangeMarkerEnd];
+  static final allMarkersPattern =
+      new RegExp(allMarkers.map(RegExp.escape).join('|'));
+  MockLspServerChannel channel;
+  LspAnalysisServer server;
+
+  int _id = 0;
+  String projectFolderPath, mainFilePath;
+  Uri mainFileUri;
+
+  final emptyTextDocumentClientCapabilities =
+      new TextDocumentClientCapabilities(
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null,
+          null);
+
+  String applyEdits(String oldContent, List<TextEdit> changes) {
+    String newContent = oldContent;
+    // Complex text manipulations are described with an array of TextEdit's,
+    // representing a single change to the document.
+    //
+    //  All text edits ranges refer to positions in the original document. Text
+    // edits ranges must never overlap, that means no part of the original
+    // document must be manipulated by more than one edit. However, it is possible
+    // that multiple edits have the same start position: multiple inserts, or any
+    // number of inserts followed by a single remove or replace edit. If multiple
+    // inserts have the same position, the order in the array defines the order in
+    // which the inserted strings appear in the resulting text.
+    if (changes.length > 1) {
+      // TODO(dantup): Implement multi-edit edits.
+      throw 'Test helper applyEdits does not support applying multiple edits';
+    } else if (changes.length == 1) {
+      final change = changes.single;
+      final startPos = change.range.start;
+      final endPos = change.range.end;
+      final lineInfo = LineInfo.fromContent(newContent);
+      final start =
+          lineInfo.getOffsetOfLine(startPos.line) + startPos.character;
+      final end = lineInfo.getOffsetOfLine(endPos.line) + endPos.character;
+      newContent = newContent.replaceRange(start, end, change.newText);
+    }
+
+    return newContent;
+  }
+
+  Future changeFile(
+      Uri uri, List<TextDocumentContentChangeEvent> changes) async {
+    var notification = makeNotification(
+      Method.textDocument_didChange,
+      new DidChangeTextDocumentParams(
+          new VersionedTextDocumentIdentifier(1, uri.toString()), changes),
+    );
+    channel.sendNotificationToServer(notification);
+    await pumpEventQueue();
+  }
+
+  Future closeFile(Uri uri) async {
+    var notification = makeNotification(
+      Method.textDocument_didClose,
+      new DidCloseTextDocumentParams(
+          new TextDocumentIdentifier(uri.toString())),
+    );
+    channel.sendNotificationToServer(notification);
+    await pumpEventQueue();
+  }
+
+  Future<T> expectErrorNotification<T>(
+    FutureOr<void> f(), {
+    Duration timeout = const Duration(seconds: 5),
+  }) async {
+    final firstError = channel.errorNotificationsFromServer.first;
+    await f();
+
+    final notificationFromServer = await firstError.timeout(timeout);
+
+    expect(notificationFromServer, isNotNull);
+    return notificationFromServer.params as T;
+  }
+
+  /// Sends a request to the server and unwraps the result. Throws if the
+  /// response was not successful or returned an error.
+  Future<T> expectSuccessfulResponseTo<T>(RequestMessage request) async {
+    final resp = await channel.sendRequestToServer(request);
+    if (resp.error != null) {
+      throw resp.error;
+    } else {
+      return resp.result as T;
+    }
+  }
+
+  Future<List<TextEdit>> formatDocument(String fileUri) async {
+    final request = makeRequest(
+      Method.textDocument_formatting,
+      new DocumentFormattingParams(
+        new TextDocumentIdentifier(fileUri),
+        new FormattingOptions(2, true), // These currently don't do anything
+      ),
+    );
+    return expectSuccessfulResponseTo(request);
+  }
+
+  Future<List<TextEdit>> formatOnType(
+      String fileUri, Position pos, String character) async {
+    final request = makeRequest(
+      Method.textDocument_onTypeFormatting,
+      new DocumentOnTypeFormattingParams(
+        new TextDocumentIdentifier(fileUri),
+        pos,
+        character,
+        new FormattingOptions(2, true), // These currently don't do anything
+      ),
+    );
+    return expectSuccessfulResponseTo(request);
+  }
+
+  Future<List<CompletionItem>> getCompletion(Uri uri, Position pos,
+      {CompletionContext context}) async {
+    final request = makeRequest(
+      Method.textDocument_completion,
+      new CompletionParams(
+        context,
+        new TextDocumentIdentifier(uri.toString()),
+        pos,
+      ),
+    );
+    return expectSuccessfulResponseTo<List<CompletionItem>>(request);
+  }
+
+  Future<List<Location>> getDefinition(Uri uri, Position pos) async {
+    final request = makeRequest(
+      Method.textDocument_definition,
+      new TextDocumentPositionParams(
+        new TextDocumentIdentifier(uri.toString()),
+        pos,
+      ),
+    );
+    return expectSuccessfulResponseTo<List<Location>>(request);
+  }
+
+  Future<Either2<List<DocumentSymbol>, List<SymbolInformation>>>
+      getDocumentSymbols(String fileUri) async {
+    final request = makeRequest(
+      Method.textDocument_documentSymbol,
+      new DocumentSymbolParams(
+        new TextDocumentIdentifier(fileUri),
+      ),
+    );
+    return expectSuccessfulResponseTo(request);
+  }
+
+  Future<Hover> getHover(Uri uri, Position pos) async {
+    final request = makeRequest(
+      Method.textDocument_hover,
+      new TextDocumentPositionParams(
+          new TextDocumentIdentifier(uri.toString()), pos),
+    );
+    return expectSuccessfulResponseTo<Hover>(request);
+  }
+
+  Future<List<Location>> getReferences(
+    Uri uri,
+    Position pos, {
+    includeDeclarations = false,
+  }) async {
+    final request = makeRequest(
+      Method.textDocument_references,
+      new ReferenceParams(
+        new ReferenceContext(includeDeclarations),
+        new TextDocumentIdentifier(uri.toString()),
+        pos,
+      ),
+    );
+    return expectSuccessfulResponseTo<List<Location>>(request);
+  }
+
+  Future<SignatureHelp> getSignatureHelp(Uri uri, Position pos) async {
+    final request = makeRequest(
+      Method.textDocument_signatureHelp,
+      new TextDocumentPositionParams(
+        new TextDocumentIdentifier(uri.toString()),
+        pos,
+      ),
+    );
+    return expectSuccessfulResponseTo<SignatureHelp>(request);
+  }
+
+  /// A helper that initializes the server with common values, since the server
+  /// will reject any other requests until it is initialized.
+  /// Capabilities are overridden by providing JSON to avoid having to construct
+  /// full objects just to change one value (the types are immutable) so must
+  /// match the spec exactly and are not verified.
+  Future<ResponseMessage> initialize({
+    String rootPath,
+    Map<String, dynamic> textDocumentCapabilities,
+  }) async {
+    final rootUri = Uri.file(rootPath ?? projectFolderPath).toString();
+    final newTextDocumentCapabilities =
+        overrideTextDocumentCapabilities(textDocumentCapabilities);
+    final request = makeRequest(
+        Method.initialize,
+        new InitializeParams(
+            null,
+            null,
+            rootUri,
+            null,
+            new ClientCapabilities(null, newTextDocumentCapabilities, null),
+            null,
+            null));
+    final response = await channel.sendRequestToServer(request);
+    expect(response.id, equals(request.id));
+
+    if (response.error == null) {
+      final notification = makeNotification(Method.initialized, null);
+      channel.sendNotificationToServer(notification);
+    }
+
+    return response;
+  }
+
+  NotificationMessage makeNotification(Method method, ToJsonable params) {
+    return new NotificationMessage(method, params, jsonRpcVersion);
+  }
+
+  RequestMessage makeRequest(Method method, ToJsonable params) {
+    final id = Either2<num, String>.t1(_id++);
+    return new RequestMessage(id, method, params, jsonRpcVersion);
+  }
+
+  Future openFile(Uri uri, String content) async {
+    var notification = makeNotification(
+      Method.textDocument_didOpen,
+      new DidOpenTextDocumentParams(
+          new TextDocumentItem(uri.toString(), dartLanguageId, 1, content)),
+    );
+    channel.sendNotificationToServer(notification);
+    await pumpEventQueue();
+  }
+
+  TextDocumentClientCapabilities overrideTextDocumentCapabilities(
+      Map<String, dynamic> textDocumentCapabilities) {
+    final json = emptyTextDocumentClientCapabilities.toJson();
+    if (textDocumentCapabilities != null) {
+      textDocumentCapabilities.keys.forEach((key) {
+        json[key] = textDocumentCapabilities[key];
+      });
+    }
+    final newTextDocumentCapabilities =
+        TextDocumentClientCapabilities.fromJson(json);
+    return newTextDocumentCapabilities;
+  }
+
+  Position positionFromMarker(String contents) =>
+      positionFromOffset(contents.indexOf('^'), contents);
+
+  Position positionFromOffset(int offset, String contents) {
+    final lineInfo = LineInfo.fromContent(contents);
+    return toPosition(lineInfo.getLocation(offset));
+  }
+
+  /// Returns the range surrounded by `[[markers]]` in the provided string,
+  /// excluding the markers themselves (as well as position markers `^` from
+  /// the offsets).
+  Range rangeFromMarkers(String contents) {
+    contents = contents.replaceAll(positionMarker, '');
+    final start = contents.indexOf(rangeMarkerStart);
+    if (start == -1) {
+      throw 'Contents did not contain $rangeMarkerStart';
+    }
+    final end = contents.indexOf(rangeMarkerEnd);
+    if (end == -1) {
+      throw 'Contents did not contain $rangeMarkerEnd';
+    }
+    return new Range(
+      positionFromOffset(start, contents),
+      positionFromOffset(end - rangeMarkerStart.length, contents),
+    );
+  }
+
+  Future replaceFile(Uri uri, String content) async {
+    await changeFile(
+      uri,
+      [new TextDocumentContentChangeEvent(null, null, content)],
+    );
+  }
+
+  void setUp() {
+    channel = new MockLspServerChannel(debugPrintCommunication);
+    // Create an SDK in the mock file system.
+    new MockSdk(resourceProvider: resourceProvider);
+    server = new LspAnalysisServer(
+        channel,
+        resourceProvider,
+        new AnalysisServerOptions(),
+        new DartSdkManager(convertPath('/sdk'), false),
+        InstrumentationService.NULL_SERVICE);
+
+    projectFolderPath = convertPath('/project');
+    newFolder(projectFolderPath);
+    newFolder(join(projectFolderPath, 'lib'));
+    // Create a folder and file to aid testing that includes imports/completion.
+    newFolder(join(projectFolderPath, 'lib', 'folder'));
+    newFile(join(projectFolderPath, 'lib', 'file.dart'));
+    mainFilePath = join(projectFolderPath, 'lib', 'main.dart');
+    mainFileUri = Uri.file(mainFilePath);
+  }
+
+  Future tearDown() async {
+    channel.close();
+    await server.shutdown();
+  }
+
+  Future<List<Diagnostic>> waitForDiagnostics(Uri uri) async {
+    PublishDiagnosticsParams diagnosticParams;
+    await channel.serverToClient.firstWhere((message) {
+      if (message is NotificationMessage &&
+          message.method == Method.textDocument_publishDiagnostics) {
+        diagnosticParams = message.params;
+
+        return diagnosticParams.uri == uri.toString();
+      }
+      return false;
+    });
+    return diagnosticParams.diagnostics;
+  }
+
+  /// Removes markers like `[[` and `]]` and `^` that are used for marking
+  /// positions/ranges in strings to avoid hard-coding positions in tests.
+  String withoutMarkers(String contents) =>
+      contents.replaceAll(allMarkersPattern, '');
+}
diff --git a/pkg/analysis_server/test/lsp/server_test.dart b/pkg/analysis_server/test/lsp/server_test.dart
new file mode 100644
index 0000000..9054552
--- /dev/null
+++ b/pkg/analysis_server/test/lsp/server_test.dart
@@ -0,0 +1,73 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'server_abstract.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ServerTest);
+  });
+}
+
+@reflectiveTest
+class ServerTest extends AbstractLspAnalysisServerTest {
+  test_shutdown_initialized() async {
+    await initialize();
+    final request = makeRequest(Method.shutdown, null);
+    final response = await channel.sendRequestToServer(request);
+    expect(response.id, equals(request.id));
+    expect(response.error, isNull);
+    expect(response.result, isNull);
+  }
+
+  test_shutdown_uninitialized() async {
+    final request = makeRequest(Method.shutdown, null);
+    final response = await channel.sendRequestToServer(request);
+    expect(response.id, equals(request.id));
+    expect(response.error, isNull);
+    expect(response.result, isNull);
+  }
+
+  test_unknownNotifications_silentlyDropped() async {
+    await initialize();
+    final notification =
+        makeNotification(new Method.fromJson(r'$/randomNotification'), null);
+    final firstError = channel.errorNotificationsFromServer.first;
+    channel.sendNotificationToServer(notification);
+
+    // Wait up to 1sec to ensure no error/log notifications were sent back.
+    var didTimeout = false;
+    final notificationFromServer = await firstError.timeout(
+      const Duration(seconds: 1),
+      onTimeout: () {
+        didTimeout = true;
+      },
+    );
+
+    expect(notificationFromServer, isNull);
+    expect(didTimeout, isTrue);
+  }
+
+  test_unknownRequest_rejected() async {
+    await initialize();
+    final request = makeRequest(new Method.fromJson('randomRequest'), null);
+    final response = await channel.sendRequestToServer(request);
+    expect(response.id, equals(request.id));
+    expect(response.error, isNotNull);
+    expect(response.error.code, equals(ErrorCodes.MethodNotFound));
+    expect(response.result, isNull);
+  }
+
+  @failingTest
+  test_unknownRequest_silentlyDropped /*??*/ () async {
+    // TODO(dantup): Fix this test up when we know how we're supposed to handle
+    // unknown $/ requests.
+    // https://github.com/Microsoft/language-server-protocol/issues/607
+    fail('TODO(dantup)');
+  }
+}
diff --git a/pkg/analysis_server/test/lsp/signature_help_test.dart b/pkg/analysis_server/test/lsp/signature_help_test.dart
new file mode 100644
index 0000000..b72233d
--- /dev/null
+++ b/pkg/analysis_server/test/lsp/signature_help_test.dart
@@ -0,0 +1,304 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'server_abstract.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(SignatureHelpTest);
+  });
+}
+
+@reflectiveTest
+class SignatureHelpTest extends AbstractLspAnalysisServerTest {
+  Future<void> initializeSupportingMarkupContent([
+    List<MarkupKind> formats = const [MarkupKind.Markdown],
+  ]) async {
+    await initialize(textDocumentCapabilities: {
+      'signatureHelp': {
+        'signatureInformation': {
+          'documentationFormat': formats.map((f) => f.toJson())
+        }
+      }
+    });
+  }
+
+  test_formats_markdown() async {
+    final content = '''
+    /// Does foo.
+    foo(String s, int i) {
+      foo(^);
+    }
+    ''';
+    final expectedLabel = 'foo(String s, int i)';
+    final expectedDoc = 'Does foo.';
+
+    await initializeSupportingMarkupContent([MarkupKind.Markdown]);
+    await openFile(mainFileUri, withoutMarkers(content));
+    await testSignature(
+      content,
+      expectedLabel,
+      expectedDoc,
+      [
+        new ParameterInformation('String s', null),
+        new ParameterInformation('int i', null),
+      ],
+      expectedFormat: MarkupKind.Markdown,
+    );
+  }
+
+  test_formats_notSupported() async {
+    final content = '''
+    /// Does foo.
+    foo(String s, int i) {
+      foo(^);
+    }
+    ''';
+    final expectedLabel = 'foo(String s, int i)';
+    final expectedDoc = 'Does foo.';
+
+    await initialize();
+    await openFile(mainFileUri, withoutMarkers(content));
+    await testSignature(
+      content,
+      expectedLabel,
+      expectedDoc,
+      [
+        new ParameterInformation('String s', null),
+        new ParameterInformation('int i', null),
+      ],
+      expectedFormat: null,
+    );
+  }
+
+  test_formats_plainTextOnly() async {
+    final content = '''
+    /// Does foo.
+    foo(String s, int i) {
+      foo(^);
+    }
+    ''';
+    final expectedLabel = 'foo(String s, int i)';
+    final expectedDoc = 'Does foo.';
+
+    await initializeSupportingMarkupContent([MarkupKind.PlainText]);
+    await openFile(mainFileUri, withoutMarkers(content));
+    await testSignature(
+      content,
+      expectedLabel,
+      expectedDoc,
+      [
+        new ParameterInformation('String s', null),
+        new ParameterInformation('int i', null),
+      ],
+      expectedFormat: MarkupKind.PlainText,
+    );
+  }
+
+  test_formats_plainTextPreferred() async {
+    final content = '''
+    /// Does foo.
+    foo(String s, int i) {
+      foo(^);
+    }
+    ''';
+    final expectedLabel = 'foo(String s, int i)';
+    final expectedDoc = 'Does foo.';
+
+    // We say we prefer PlainText as a client, but since we only really
+    // support Markdown and the client supports it, we expect the server
+    // to provide Markdown.
+    await initializeSupportingMarkupContent(
+        [MarkupKind.PlainText, MarkupKind.Markdown]);
+    await openFile(mainFileUri, withoutMarkers(content));
+    await testSignature(
+      content,
+      expectedLabel,
+      expectedDoc,
+      [
+        new ParameterInformation('String s', null),
+        new ParameterInformation('int i', null),
+      ],
+      expectedFormat: MarkupKind.Markdown,
+    );
+  }
+
+  test_params_multipleNamed() async {
+    final content = '''
+    /// Does foo.
+    foo(String s, {bool b = true, bool a}) {
+      foo(^);
+    }
+    ''';
+
+    final expectedLabel = 'foo(String s, {bool b = true, bool a})';
+    final expectedDoc = 'Does foo.';
+
+    await initializeSupportingMarkupContent();
+    await openFile(mainFileUri, withoutMarkers(content));
+    await testSignature(
+      content,
+      expectedLabel,
+      expectedDoc,
+      [
+        new ParameterInformation('String s', null),
+        new ParameterInformation('bool b = true', null),
+        new ParameterInformation('bool a', null),
+      ],
+    );
+  }
+
+  test_params_multipleOptional() async {
+    final content = '''
+    /// Does foo.
+    foo(String s, [bool b = true, bool a]) {
+      foo(^);
+    }
+    ''';
+
+    final expectedLabel = 'foo(String s, [bool b = true, bool a])';
+    final expectedDoc = 'Does foo.';
+
+    await initializeSupportingMarkupContent();
+    await openFile(mainFileUri, withoutMarkers(content));
+    await testSignature(
+      content,
+      expectedLabel,
+      expectedDoc,
+      [
+        new ParameterInformation('String s', null),
+        new ParameterInformation('bool b = true', null),
+        new ParameterInformation('bool a', null),
+      ],
+    );
+  }
+
+  test_params_named() async {
+    final content = '''
+    /// Does foo.
+    foo(String s, {bool b = true}) {
+      foo(^);
+    }
+    ''';
+
+    final expectedLabel = 'foo(String s, {bool b = true})';
+    final expectedDoc = 'Does foo.';
+
+    await initializeSupportingMarkupContent();
+    await openFile(mainFileUri, withoutMarkers(content));
+    await testSignature(
+      content,
+      expectedLabel,
+      expectedDoc,
+      [
+        new ParameterInformation('String s', null),
+        new ParameterInformation('bool b = true', null),
+      ],
+    );
+  }
+
+  test_params_optional() async {
+    final content = '''
+    /// Does foo.
+    foo(String s, [bool b = true]) {
+      foo(^);
+    }
+    ''';
+
+    final expectedLabel = 'foo(String s, [bool b = true])';
+    final expectedDoc = 'Does foo.';
+
+    await initializeSupportingMarkupContent();
+    await openFile(mainFileUri, withoutMarkers(content));
+    await testSignature(
+      content,
+      expectedLabel,
+      expectedDoc,
+      [
+        new ParameterInformation('String s', null),
+        new ParameterInformation('bool b = true', null),
+      ],
+    );
+  }
+
+  test_simple() async {
+    final content = '''
+    /// Does foo.
+    foo(String s, int i) {
+      foo(^);
+    }
+    ''';
+    final expectedLabel = 'foo(String s, int i)';
+    final expectedDoc = 'Does foo.';
+
+    await initializeSupportingMarkupContent();
+    await openFile(mainFileUri, withoutMarkers(content));
+    await testSignature(
+      content,
+      expectedLabel,
+      expectedDoc,
+      [
+        new ParameterInformation('String s', null),
+        new ParameterInformation('int i', null),
+      ],
+    );
+  }
+
+  test_unopenFile() async {
+    final content = '''
+    /// Does foo.
+    foo(String s, int i) {
+      foo(^);
+    }
+    ''';
+    final expectedLabel = 'foo(String s, int i)';
+    final expectedDoc = 'Does foo.';
+
+    newFile(mainFilePath, content: withoutMarkers(content));
+    await initializeSupportingMarkupContent();
+    await testSignature(
+      content,
+      expectedLabel,
+      expectedDoc,
+      [
+        new ParameterInformation('String s', null),
+        new ParameterInformation('int i', null),
+      ],
+    );
+  }
+
+  Future<void> testSignature(
+    String fileContent,
+    String expectedLabel,
+    String expectedDoc,
+    List<ParameterInformation> expectedParams, {
+    MarkupKind expectedFormat = MarkupKind.Markdown,
+  }) async {
+    final res =
+        await getSignatureHelp(mainFileUri, positionFromMarker(fileContent));
+
+    expect(res.activeParameter, isNull);
+    expect(res.activeSignature, equals(0));
+    expect(res.signatures, hasLength(1));
+    final sig = res.signatures.first;
+    expect(sig.label, equals(expectedLabel));
+    expect(sig.parameters, equals(expectedParams));
+
+    // Test the format matches the tests expectation.
+    // For clients that don't support MarkupContent it'll be a plain string,
+    // but otherwise it'll be a MarkupContent of type PlainText or Markdown.
+    final doc = sig.documentation;
+    if (expectedFormat == null) {
+      // Plain string.
+      expect(doc.valueEquals(expectedDoc), isTrue);
+    } else {
+      final expected = new MarkupContent(expectedFormat, expectedDoc);
+      expect(doc.valueEquals(expected), isTrue);
+    }
+  }
+}
diff --git a/pkg/analysis_server/test/lsp/test_all.dart b/pkg/analysis_server/test/lsp/test_all.dart
new file mode 100644
index 0000000..c889439
--- /dev/null
+++ b/pkg/analysis_server/test/lsp/test_all.dart
@@ -0,0 +1,33 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'completion_test.dart' as completion_test;
+import 'definition_test.dart' as definition_test;
+import 'diagnostic_test.dart' as diagnostic_test;
+import 'document_symbols_test.dart' as document_symbols_test;
+import 'file_modification_test.dart' as file_modification_test;
+import 'format_test.dart' as format_test;
+import 'hover_test.dart' as hover_test;
+import 'initialization_test.dart' as initialization_test;
+import 'references_test.dart' as references_test;
+import 'server_test.dart' as server_test;
+import 'signature_help_test.dart' as signature_help_test;
+
+main() {
+  defineReflectiveSuite(() {
+    completion_test.main();
+    definition_test.main();
+    diagnostic_test.main();
+    document_symbols_test.main();
+    file_modification_test.main();
+    format_test.main();
+    hover_test.main();
+    initialization_test.main();
+    references_test.main();
+    server_test.main();
+    signature_help_test.main();
+  }, name: 'lsp');
+}
diff --git a/pkg/analysis_server/test/mock_sdk.dart b/pkg/analysis_server/test/mock_sdk.dart
deleted file mode 100644
index 07f8f15..0000000
--- a/pkg/analysis_server/test/mock_sdk.dart
+++ /dev/null
@@ -1,452 +0,0 @@
-// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'package:analyzer/file_system/file_system.dart' as resource;
-import 'package:analyzer/file_system/memory_file_system.dart' as resource;
-import 'package:analyzer/src/context/context.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/sdk.dart';
-import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer/src/summary/idl.dart' show PackageBundle;
-import 'package:analyzer/src/summary/summary_file_builder.dart';
-
-class MockSdk implements DartSdk {
-  static const MockSdkLibrary LIB_CORE =
-      const MockSdkLibrary('dart:core', '/lib/core/core.dart', '''
-library dart.core;
-
-import 'dart:async';
-import 'dart:_internal';
-
-class Object {
-  const Object();
-  bool operator ==(other) => identical(this, other);
-  String toString() => 'a string';
-  int get hashCode => 0;
-  Type get runtimeType => null;
-  dynamic noSuchMethod(Invocation invocation) => null;
-}
-
-class Function {}
-class StackTrace {}
-class Symbol {}
-class Type {}
-
-abstract class Comparable<T> {
-  int compareTo(T other);
-}
-
-abstract class String implements Comparable<String> {
-  external factory String.fromCharCodes(Iterable<int> charCodes,
-                                        [int start = 0, int end]);
-  bool get isEmpty => false;
-  bool get isNotEmpty => false;
-  int get length => 0;
-  String toUpperCase();
-  List<int> get codeUnits;
-}
-
-class bool extends Object {}
-
-abstract class num implements Comparable<num> {
-  bool operator <(num other);
-  bool operator <=(num other);
-  bool operator >(num other);
-  bool operator >=(num other);
-  num operator +(num other);
-  num operator -(num other);
-  num operator *(num other);
-  num operator /(num other);
-  int operator ^(int other);
-  int operator &(int other);
-  int operator |(int other);
-  int operator <<(int other);
-  int operator >>(int other);
-  int operator ~/(num other);
-  num operator %(num other);
-  int operator ~();
-  int toInt();
-  double toDouble();
-  num abs();
-  int round();
-}
-
-abstract class int extends num {
-  bool get isEven => false;
-  int operator -();
-  external static int parse(String source,
-                            { int radix,
-                              int onError(String source) });
-}
-
-abstract class double extends num {
-  static const double NAN = 0.0 / 0.0;
-  static const double INFINITY = 1.0 / 0.0;
-  static const double NEGATIVE_INFINITY = -INFINITY;
-  static const double MIN_POSITIVE = 5e-324;
-  static const double MAX_FINITE = 1.7976931348623157e+308;
-
-  double remainder(num other);
-  double operator +(num other);
-  double operator -(num other);
-  double operator *(num other);
-  double operator %(num other);
-  double operator /(num other);
-  int operator ~/(num other);
-  double operator -();
-  double abs();
-  double get sign;
-  int round();
-  int floor();
-  int ceil();
-  int truncate();
-  double roundToDouble();
-  double floorToDouble();
-  double ceilToDouble();
-  double truncateToDouble();
-  external static double parse(String source,
-                               [double onError(String source)]);
-}
-
-class DateTime extends Object {}
-class Null extends Object {}
-
-class Deprecated extends Object {
-  final String expires;
-  const Deprecated(this.expires);
-}
-const Object deprecated = const Deprecated("next release");
-
-class Exception {
-  factory Exception([var message]);
-}
-
-class Iterator<E> {
-  bool moveNext();
-  E get current;
-}
-
-abstract class Iterable<E> {
-  Iterator<E> get iterator;
-  bool get isEmpty;
-  void forEach(void f(E element));
-  Iterable<T> map<T>(T f(E e)) => null;
-  T fold<T>(T initialValue, T combine(T previousValue, E element));
-  List<E> toList({bool growable: true});
-}
-
-class List<E> implements Iterable<E> {
-  List();
-  void add(E value) {}
-  void addAll(Iterable<E> iterable) {}
-  List<R> cast<R>();
-  E operator [](int index) => null;
-  void operator []=(int index, E value) {}
-  Iterator<E> get iterator => null;
-  void clear() {}
-  Iterable<E> where(bool test(E element)) {}
-
-  bool get isEmpty => false;
-  E get first => null;
-  E get last => null;
-}
-
-abstract class Map<K, V> extends Object {
-  Iterable<K> get keys;
-  int get length;
-  Iterable<V> get values;
-  V operator [](K key) => null;
-  void operator []=(K key, V value) {}
-  Map<RK, RV> cast<RK, RV>();
-  bool containsKey(Object key);
-}
-
-external bool identical(Object a, Object b);
-
-void print(Object object) {}
-
-class Set<E> implements Iterable<E> {
-  Set<R> cast<R>();
-}
-
-class Uri {
-  static List<int> parseIPv6Address(String host, [int start = 0, int end]) {
-    int parseHex(int start, int end) {
-      return 0;
-    }
-    return null;
-  }
-}
-
-class _Override { const _Override(); }
-const Object override = const _Override();
-''');
-  static const MockSdkLibrary LIB_ASYNC =
-      const MockSdkLibrary('dart:async', '/lib/async/async.dart', '''
-library dart.async;
-
-import 'dart:math';
-
-class Future<T> {
-  factory Future(computation()) => null;
-  factory Future.delayed(Duration duration, [T computation()]) => null;
-  factory Future.value([value]) => null;
-  static Future wait(List<Future> futures) => null;
-}
-
-class FutureOr<T> {}
-
-class Stream<T> {}
-abstract class StreamTransformer<S, T> {}
-''');
-
-  static const MockSdkLibrary LIB_COLLECTION = const MockSdkLibrary(
-      'dart:collection', '/lib/collection/collection.dart', '''
-library dart.collection;
-
-abstract class HashMap<K, V> implements Map<K, V> {}
-abstract class LinkedHashMap<K, V> implements Map<K, V> {}
-''');
-
-  static const MockSdkLibrary LIB_CONVERT =
-      const MockSdkLibrary('dart:convert', '/lib/convert/convert.dart', '''
-library dart.convert;
-
-import 'dart:async';
-
-abstract class Converter<S, T> implements StreamTransformer {}
-class JsonDecoder extends Converter<String, Object> {}
-''');
-
-  static const MockSdkLibrary LIB_MATH =
-      const MockSdkLibrary('dart:math', '/lib/math/math.dart', '''
-library dart.math;
-const double E = 2.718281828459045;
-const double PI = 3.1415926535897932;
-const double LN10 =  2.302585092994046;
-T min<T extends num>(T a, T b) => null;
-T max<T extends num>(T a, T b) => null;
-external double cos(num radians);
-external num pow(num x, num exponent);
-external double sin(num radians);
-external double sqrt(num x);
-class Random {
-  bool nextBool() => true;
-  double nextDouble() => 2.0;
-  int nextInt() => 1;
-}
-''');
-
-  static const MockSdkLibrary LIB_HTML = const MockSdkLibrary(
-      'dart:html', '/lib/html/dartium/html_dartium.dart', '''
-library dart.html;
-class HtmlElement {}
-''');
-
-  static const MockSdkLibrary LIB_INTERNAL =
-      const MockSdkLibrary('dart:_internal', '/lib/internal/internal.dart', '''
-library dart._internal;
-external void printToConsole(String line);
-''');
-
-  static const List<SdkLibrary> LIBRARIES = const [
-    LIB_CORE,
-    LIB_ASYNC,
-    LIB_COLLECTION,
-    LIB_CONVERT,
-    LIB_MATH,
-    LIB_HTML,
-    LIB_INTERNAL,
-  ];
-
-  static const String librariesContent = r'''
-const Map<String, LibraryInfo> libraries = const {
-  "async": const LibraryInfo("async/async.dart"),
-  "collection": const LibraryInfo("collection/collection.dart"),
-  "convert": const LibraryInfo("convert/convert.dart"),
-  "core": const LibraryInfo("core/core.dart"),
-  "html": const LibraryInfo("html/dartium/html_dartium.dart"),
-  "math": const LibraryInfo("math/math.dart"),
-  "_internal": const LibraryInfo("internal/internal.dart"),
-};
-''';
-
-  final resource.MemoryResourceProvider provider;
-
-  /**
-   * The [AnalysisContext] which is used for all of the sources.
-   */
-  InternalAnalysisContext _analysisContext;
-
-  /**
-   * The cached linked bundle of the SDK.
-   */
-  PackageBundle _bundle;
-
-  MockSdk(
-      {bool generateSummaryFiles: false,
-      resource.ResourceProvider resourceProvider})
-      : provider = resourceProvider ?? new resource.MemoryResourceProvider() {
-    LIBRARIES.forEach((SdkLibrary library) {
-      provider.newFile(provider.convertPath(library.path),
-          (library as MockSdkLibrary).content);
-    });
-    provider.newFile(
-        provider.convertPath(
-            '/lib/_internal/sdk_library_metadata/lib/libraries.dart'),
-        librariesContent);
-    if (generateSummaryFiles) {
-      List<int> bytes = _computeLinkedBundleBytes();
-      provider.newFileWithBytes(
-          provider.convertPath('/lib/_internal/strong.sum'), bytes);
-    }
-  }
-
-  @override
-  AnalysisContext get context {
-    if (_analysisContext == null) {
-      _analysisContext = new SdkAnalysisContext(null);
-      SourceFactory factory = new SourceFactory([new DartUriResolver(this)]);
-      _analysisContext.sourceFactory = factory;
-    }
-    return _analysisContext;
-  }
-
-  @override
-  List<SdkLibrary> get sdkLibraries => LIBRARIES;
-
-  @override
-  String get sdkVersion => throw unimplemented;
-
-  UnimplementedError get unimplemented => new UnimplementedError();
-
-  @override
-  List<String> get uris {
-    List<String> uris = <String>[];
-    for (SdkLibrary library in LIBRARIES) {
-      uris.add(library.shortName);
-    }
-    return uris;
-  }
-
-  @override
-  Source fromFileUri(Uri uri) {
-    String filePath = provider.pathContext.fromUri(uri);
-    for (SdkLibrary library in sdkLibraries) {
-      String libraryPath = provider.convertPath(library.path);
-      if (filePath == libraryPath) {
-        try {
-          resource.File file = provider.getResource(filePath);
-          Uri dartUri = Uri.parse(library.shortName);
-          return file.createSource(dartUri);
-        } catch (exception) {
-          return null;
-        }
-      }
-      String libraryRootPath = provider.pathContext.dirname(libraryPath) +
-          provider.pathContext.separator;
-      if (filePath.startsWith(libraryRootPath)) {
-        String pathInLibrary = filePath.substring(libraryRootPath.length);
-        String uriStr = '${library.shortName}/$pathInLibrary';
-        try {
-          resource.File file = provider.getResource(filePath);
-          Uri dartUri = Uri.parse(uriStr);
-          return file.createSource(dartUri);
-        } catch (exception) {
-          return null;
-        }
-      }
-    }
-    return null;
-  }
-
-  @override
-  PackageBundle getLinkedBundle() {
-    if (_bundle == null) {
-      resource.File summaryFile =
-          provider.getFile(provider.convertPath('/lib/_internal/strong.sum'));
-      List<int> bytes;
-      if (summaryFile.exists) {
-        bytes = summaryFile.readAsBytesSync();
-      } else {
-        bytes = _computeLinkedBundleBytes();
-      }
-      _bundle = new PackageBundle.fromBuffer(bytes);
-    }
-    return _bundle;
-  }
-
-  @override
-  SdkLibrary getSdkLibrary(String dartUri) {
-    // getSdkLibrary() is only used to determine whether a library is internal
-    // to the SDK.  The mock SDK doesn't have any internals, so it's safe to
-    // return null.
-    return null;
-  }
-
-  @override
-  Source mapDartUri(String dartUri) {
-    const Map<String, String> uriToPath = const {
-      "dart:core": "/lib/core/core.dart",
-      "dart:html": "/lib/html/dartium/html_dartium.dart",
-      "dart:async": "/lib/async/async.dart",
-      "dart:collection": "/lib/collection/collection.dart",
-      "dart:convert": "/lib/convert/convert.dart",
-      "dart:math": "/lib/math/math.dart",
-      "dart:_internal": "/lib/internal/internal.dart",
-    };
-
-    String path = uriToPath[dartUri];
-    if (path != null) {
-      resource.File file = provider.getResource(provider.convertPath(path));
-      Uri uri = new Uri(scheme: 'dart', path: dartUri.substring(5));
-      return file.createSource(uri);
-    }
-
-    // If we reach here then we tried to use a dartUri that's not in the
-    // table above.
-    return null;
-  }
-
-  /**
-   * Compute the bytes of the linked bundle associated with this SDK.
-   */
-  List<int> _computeLinkedBundleBytes() {
-    List<Source> librarySources = sdkLibraries
-        .map((SdkLibrary library) => mapDartUri(library.shortName))
-        .toList();
-    return new SummaryBuilder(librarySources, context).build();
-  }
-}
-
-class MockSdkLibrary implements SdkLibrary {
-  final String shortName;
-  final String path;
-  final String content;
-
-  const MockSdkLibrary(this.shortName, this.path, this.content);
-
-  @override
-  String get category => throw unimplemented;
-
-  @override
-  bool get isDart2JsLibrary => throw unimplemented;
-
-  @override
-  bool get isDocumented => throw unimplemented;
-
-  @override
-  bool get isImplementation => false;
-
-  @override
-  bool get isInternal => shortName.startsWith('dart:_');
-
-  @override
-  bool get isShared => throw unimplemented;
-
-  @override
-  bool get isVmLibrary => throw unimplemented;
-
-  UnimplementedError get unimplemented => new UnimplementedError();
-}
diff --git a/pkg/analysis_server/test/mocks.dart b/pkg/analysis_server/test/mocks.dart
index 6c4b927..23f74f9 100644
--- a/pkg/analysis_server/test/mocks.dart
+++ b/pkg/analysis_server/test/mocks.dart
@@ -3,12 +3,17 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:async';
+import 'dart:convert';
 import 'dart:io';
 
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart' as lsp;
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:analysis_server/lsp_protocol/protocol_special.dart' as lsp;
 import 'package:analysis_server/protocol/protocol.dart';
 import 'package:analysis_server/protocol/protocol_generated.dart';
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/channel/channel.dart';
+import 'package:analysis_server/src/lsp/channel/lsp_channel.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/timestamped_data.dart';
 import 'package:test/test.dart';
@@ -43,6 +48,140 @@
 Matcher isResponseSuccess(String id) => new _IsResponseSuccess(id);
 
 /**
+ * A mock [LspServerCommunicationChannel] for testing [LspAnalysisServer].
+ */
+class MockLspServerChannel implements LspServerCommunicationChannel {
+  // TODO(dantup): Support server-to-client requests. We'll probably need to
+  // change IncomingMessage to just Message for both directions?
+  final StreamController<lsp.IncomingMessage> _clientToServer =
+      new StreamController<lsp.IncomingMessage>.broadcast();
+  final StreamController<lsp.Message> _serverToClient =
+      new StreamController<lsp.Message>.broadcast();
+
+  bool _closed = false;
+
+  String name;
+
+  MockLspServerChannel(bool _printMessages) {
+    if (_printMessages) {
+      _serverToClient.stream
+          .listen((message) => print('<== ' + jsonEncode(message)));
+      _clientToServer.stream
+          .listen((message) => print('==> ' + jsonEncode(message)));
+    }
+  }
+
+  Stream<lsp.Message> get serverToClient => _serverToClient.stream;
+
+  @override
+  void close() {
+    _closed = true;
+  }
+
+  /**
+   * A stream of [NotificationMessage]s from the server that may be errors.
+   */
+  Stream<lsp.NotificationMessage> get errorNotificationsFromServer {
+    return notificationsFromServer.where(_isErrorNotification);
+  }
+
+  @override
+  void listen(void Function(lsp.IncomingMessage message) onMessage,
+      {Function onError, void Function() onDone}) {
+    _clientToServer.stream.listen(onMessage, onError: onError, onDone: onDone);
+  }
+
+  /**
+   * A stream of [NotificationMessage]s from the server.
+   */
+  Stream<lsp.NotificationMessage> get notificationsFromServer {
+    return _serverToClient.stream
+        .where((m) => m is lsp.NotificationMessage)
+        .cast<lsp.NotificationMessage>();
+  }
+
+  @override
+  void sendNotification(lsp.NotificationMessage notification) {
+    // Don't deliver notifications after the connection is closed.
+    if (_closed) {
+      return;
+    }
+    _serverToClient.add(notification);
+  }
+
+  void sendNotificationToServer(lsp.NotificationMessage notification) {
+    // Don't deliver notifications after the connection is closed.
+    if (_closed) {
+      return;
+    }
+    notification = _convertJson(notification, lsp.NotificationMessage.fromJson);
+    _clientToServer.add(notification);
+  }
+
+  /**
+   * Send the given [request] to the server and return a future that will
+   * complete when a response associated with the [request] has been received.
+   * The value of the future will be the received response.
+   */
+  Future<lsp.ResponseMessage> sendRequestToServer(lsp.RequestMessage request) {
+    // No further requests should be sent after the connection is closed.
+    if (_closed) {
+      throw new Exception('sendLspRequest after connection closed');
+    }
+    request = _convertJson(request, lsp.RequestMessage.fromJson);
+    // Wrap send request in future to simulate WebSocket.
+    new Future(() => _clientToServer.add(request));
+    return waitForResponse(request);
+  }
+
+  @override
+  void sendResponse(lsp.ResponseMessage response) {
+    // Don't deliver responses after the connection is closed.
+    if (_closed) {
+      return;
+    }
+    // Wrap send response in future to simulate WebSocket.
+    new Future(() => _serverToClient.add(response));
+  }
+
+  /**
+   * Return a future that will complete when a response associated with the
+   * given [request] has been received. The value of the future will be the
+   * received response. The returned future will throw an exception if a server
+   * error is reported before the response has been received.
+   * 
+   * Unlike [sendLspRequest], this method assumes that the [request] has already
+   * been sent to the server.
+   */
+  Future<lsp.ResponseMessage> waitForResponse(
+      lsp.RequestMessage request) async {
+    // TODO(dantup): Make this throw if an error notifications comes in (as
+    // described above).
+    final response = await _serverToClient.stream.firstWhere((response) =>
+        response is lsp.ResponseMessage && response.id == request.id);
+    return response;
+  }
+
+  /// Round trips the object to JSON and back to ensure it behaves the same as
+  /// when running over the real STDIO server. Without this, the object passed
+  /// to the handlers will have concrete types as constructed in tests rather
+  /// than the maps as they would be (the server expects to do the conversion).
+  T _convertJson<T>(
+      lsp.ToJsonable message, T Function(Map<String, dynamic>) constructor) {
+    return constructor(jsonDecode(jsonEncode(message.toJson())));
+  }
+
+  /// Checks whether a notification is likely an error from the server (for
+  /// example a window/showMessage). This is useful for tests that want to
+  /// ensure no errors come from the server in response to notifications (which
+  /// don't have their own responses).
+  bool _isErrorNotification(lsp.NotificationMessage notification) {
+    return notification.method == Method.window_logMessage ||
+        notification.method == Method.window_showMessage;
+  }
+}
+
+/**
  * A mock [ServerCommunicationChannel] for testing [AnalysisServer].
  */
 class MockServerChannel implements ServerCommunicationChannel {
@@ -55,6 +194,7 @@
 
   List<Response> responsesReceived = [];
   List<Notification> notificationsReceived = [];
+
   bool _closed = false;
 
   String name;
diff --git a/pkg/analysis_server/test/plugin/protocol_dart_test.dart b/pkg/analysis_server/test/plugin/protocol_dart_test.dart
index 67f5ca5..ed8e850 100644
--- a/pkg/analysis_server/test/plugin/protocol_dart_test.dart
+++ b/pkg/analysis_server/test/plugin/protocol_dart_test.dart
@@ -39,6 +39,8 @@
         convertElementKind(engine.ElementKind.FUNCTION), ElementKind.FUNCTION);
     expect(convertElementKind(engine.ElementKind.FUNCTION_TYPE_ALIAS),
         ElementKind.FUNCTION_TYPE_ALIAS);
+    expect(convertElementKind(engine.ElementKind.GENERIC_FUNCTION_TYPE),
+        ElementKind.FUNCTION_TYPE_ALIAS);
     expect(convertElementKind(engine.ElementKind.GETTER), ElementKind.GETTER);
     expect(convertElementKind(engine.ElementKind.LABEL), ElementKind.LABEL);
     expect(convertElementKind(engine.ElementKind.LIBRARY), ElementKind.LIBRARY);
@@ -169,7 +171,7 @@
   }
 
   test_fromElement_CONSTRUCTOR_required_parameters_1() async {
-    addMetaPackageSource();
+    addMetaPackage();
     engine.Source source = addSource('/test.dart', '''
 import 'package:meta/meta.dart';    
 class A {
@@ -186,7 +188,7 @@
 
   /// Verify parameter re-ordering for required params
   test_fromElement_CONSTRUCTOR_required_parameters_2() async {
-    addMetaPackageSource();
+    addMetaPackage();
     engine.Source source = addSource('/test.dart', '''
 import 'package:meta/meta.dart';    
 class A {
@@ -204,7 +206,7 @@
 
   /// Verify parameter re-ordering for required params
   test_fromElement_CONSTRUCTOR_required_parameters_3() async {
-    addMetaPackageSource();
+    addMetaPackage();
     engine.Source source = addSource('/test.dart', '''
 import 'package:meta/meta.dart';    
 class A {
@@ -408,6 +410,30 @@
     expect(element.flags, 0);
   }
 
+  test_fromElement_FUNCTION_TYPE_ALIAS_genericTypeAlias() async {
+    engine.Source source = addSource('/test.dart', '''
+typedef F<T> = int Function(String x);
+''');
+    engine.CompilationUnit unit = await resolveLibraryUnit(source);
+    engine.GenericTypeAliasElement engineElement = findElementInUnit(unit, 'F');
+    // create notification Element
+    Element element = convertElement(engineElement);
+    expect(element.kind, ElementKind.FUNCTION_TYPE_ALIAS);
+    expect(element.name, 'F');
+    expect(element.typeParameters, '<T>');
+    {
+      Location location = element.location;
+      expect(location.file, convertPath('/test.dart'));
+      expect(location.offset, 8);
+      expect(location.length, 'F'.length);
+      expect(location.startLine, 1);
+      expect(location.startColumn, 9);
+    }
+    expect(element.parameters, '(String x)');
+    expect(element.returnType, 'int');
+    expect(element.flags, 0);
+  }
+
   test_fromElement_GETTER() async {
     engine.Source source = addSource('/test.dart', '''
 class A {
diff --git a/pkg/analysis_server/test/protocol_server_test.dart b/pkg/analysis_server/test/protocol_server_test.dart
index 7ac554b..9d2e9ca 100644
--- a/pkg/analysis_server/test/protocol_server_test.dart
+++ b/pkg/analysis_server/test/protocol_server_test.dart
@@ -128,7 +128,7 @@
       engine.ElementKind.DYNAMIC: ElementKind.UNKNOWN,
       engine.ElementKind.ERROR: ElementKind.UNKNOWN,
       engine.ElementKind.EXPORT: ElementKind.UNKNOWN,
-      engine.ElementKind.GENERIC_FUNCTION_TYPE: ElementKind.UNKNOWN,
+      engine.ElementKind.GENERIC_FUNCTION_TYPE: ElementKind.FUNCTION_TYPE_ALIAS,
       engine.ElementKind.IMPORT: ElementKind.UNKNOWN,
       engine.ElementKind.NAME: ElementKind.UNKNOWN,
       engine.ElementKind.UNIVERSE: ElementKind.UNKNOWN
diff --git a/pkg/analysis_server/test/search/element_references_test.dart b/pkg/analysis_server/test/search/element_references_test.dart
index fb3aa88..6473f65 100644
--- a/pkg/analysis_server/test/search/element_references_test.dart
+++ b/pkg/analysis_server/test/search/element_references_test.dart
@@ -693,6 +693,18 @@
     assertHasResult(SearchResultKind.REFERENCE, 'F f');
   }
 
+  Future<void> test_typeReference_genericTypeAlias_function() async {
+    addTestFile('''
+typedef F = Function();
+main(F f) {
+}
+''');
+    await findElementReferences('F =', false);
+    expect(searchElement.kind, ElementKind.FUNCTION_TYPE_ALIAS);
+    expect(results, hasLength(1));
+    assertHasResult(SearchResultKind.REFERENCE, 'F f');
+  }
+
   Future<void> test_typeReference_typeVariable() async {
     addTestFile('''
 class A<T> {
diff --git a/pkg/analysis_server/test/search/top_level_declarations_test.dart b/pkg/analysis_server/test/search/top_level_declarations_test.dart
index 5e46628..7e1fd99 100644
--- a/pkg/analysis_server/test/search/top_level_declarations_test.dart
+++ b/pkg/analysis_server/test/search/top_level_declarations_test.dart
@@ -67,16 +67,18 @@
 class A {} // A
 class B = Object with A;
 typedef C();
-D() {}
-var E = null;
+typedef D();
+E() {}
+var F = null;
 class ABC {}
 ''');
-    await findTopLevelDeclarations('^[A-E]\$');
+    await findTopLevelDeclarations('^[A-F]\$');
     assertHasDeclaration(ElementKind.CLASS, 'A');
     assertHasDeclaration(ElementKind.CLASS, 'B');
     assertHasDeclaration(ElementKind.FUNCTION_TYPE_ALIAS, 'C');
-    assertHasDeclaration(ElementKind.FUNCTION, 'D');
-    assertHasDeclaration(ElementKind.TOP_LEVEL_VARIABLE, 'E');
+    assertHasDeclaration(ElementKind.FUNCTION_TYPE_ALIAS, 'D');
+    assertHasDeclaration(ElementKind.FUNCTION, 'E');
+    assertHasDeclaration(ElementKind.TOP_LEVEL_VARIABLE, 'F');
     assertNoDeclaration(ElementKind.CLASS, 'ABC');
   }
 }
diff --git a/pkg/analysis_server/test/services/completion/dart/arglist_contributor_test.dart b/pkg/analysis_server/test/services/completion/dart/arglist_contributor_test.dart
index a75c2e4..d6c7124 100644
--- a/pkg/analysis_server/test/services/completion/dart/arglist_contributor_test.dart
+++ b/pkg/analysis_server/test/services/completion/dart/arglist_contributor_test.dart
@@ -896,7 +896,7 @@
   }
 
   test_ArgumentList_local_constructor_required_param_0() async {
-    addMetaPackageSource();
+    addMetaPackage();
     addTestSource('''
 import 'package:meta/meta.dart';
 class A { A({int one, @required String two: 'defaultValue'}) { } }
diff --git a/pkg/analysis_server/test/services/completion/dart/completion_contributor_util.dart b/pkg/analysis_server/test/services/completion/dart/completion_contributor_util.dart
index fc67b56..acd42b0 100644
--- a/pkg/analysis_server/test/services/completion/dart/completion_contributor_util.dart
+++ b/pkg/analysis_server/test/services/completion/dart/completion_contributor_util.dart
@@ -9,7 +9,6 @@
 import 'package:analysis_server/src/services/completion/completion_performance.dart';
 import 'package:analysis_server/src/services/completion/dart/completion_manager.dart'
     show DartCompletionRequestImpl;
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/generated/parser.dart' as analyzer;
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:test/test.dart';
@@ -460,19 +459,10 @@
     return cs;
   }
 
-  /**
-   * Return a [Future] that completes with the containing library information
-   * after it is accessible via [context.getLibrariesContaining].
-   */
-  Future<void> computeLibrariesContaining([int times = 200]) {
-    return driver.getResult(testFile).then((result) => null);
-  }
-
   Future computeSuggestions({int times = 200}) async {
-    AnalysisResult analysisResult =
-        await driver.getResult(convertPath(testFile));
+    var resolveResult = await session.getResolvedUnit(testFile);
     CompletionRequestImpl baseRequest = new CompletionRequestImpl(
-        analysisResult, completionOffset, new CompletionPerformance());
+        resolveResult, completionOffset, new CompletionPerformance());
 
     // Build the request
     var request = await DartCompletionRequestImpl.from(baseRequest);
@@ -553,7 +543,7 @@
   @override
   void setUp() {
     super.setUp();
-    testFile = resourceProvider.convertPath('/completionTest.dart');
+    testFile = convertPath('/completionTest.dart');
     contributor = createContributor();
   }
 }
diff --git a/pkg/analysis_server/test/services/completion/dart/completion_manager_test.dart b/pkg/analysis_server/test/services/completion/dart/completion_manager_test.dart
index 263f905..83ad6a8 100644
--- a/pkg/analysis_server/test/services/completion/dart/completion_manager_test.dart
+++ b/pkg/analysis_server/test/services/completion/dart/completion_manager_test.dart
@@ -47,7 +47,7 @@
 
     // Build the request
     CompletionRequestImpl baseRequest = new CompletionRequestImpl(
-        await driver.getResult(testFile),
+        await session.getResolvedUnit(testFile),
         completionOffset,
         new CompletionPerformance());
     Completer<DartCompletionRequest> requestCompleter =
diff --git a/pkg/analysis_server/test/services/completion/dart/imported_reference_contributor_test.dart b/pkg/analysis_server/test/services/completion/dart/imported_reference_contributor_test.dart
index 26100ebf..d36e5af 100644
--- a/pkg/analysis_server/test/services/completion/dart/imported_reference_contributor_test.dart
+++ b/pkg/analysis_server/test/services/completion/dart/imported_reference_contributor_test.dart
@@ -1,12 +1,10 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analysis_server/src/protocol_server.dart';
 import 'package:analysis_server/src/provisional/completion/dart/completion_dart.dart';
 import 'package:analysis_server/src/services/completion/dart/imported_reference_contributor.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/source.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -30,7 +28,7 @@
 
   /// Sanity check.  Permutations tested in local_ref_contributor.
   test_ArgDefaults_function_with_required_named() async {
-    addMetaPackageSource();
+    addMetaPackage();
 
     resolveSource('/testB.dart', '''
 lib B;
@@ -504,7 +502,7 @@
     await computeSuggestions();
     expect(replacementOffset, completionOffset);
     expect(replacementLength, 0);
-    assertSuggestFunction('y', 'dynamic');
+    assertSuggestFunction('y', 'Future<dynamic>');
     assertNotSuggested('A');
     assertSuggestClass('Object');
   }
@@ -1201,19 +1199,16 @@
   }
 
   test_Block_unimported() async {
-    addPackageSource('myBar', 'bar.dart', 'class Foo2 { Foo2() { } }');
-    addSource(
-        '/proj/testAB.dart', 'import "package:myBar/bar.dart"; class Foo { }');
-    testFile = '/proj/completionTest.dart';
-    addTestSource('class C {foo(){F^}}');
+    addPackageFile('aaa', 'a.dart', 'class A {}');
+    addTestSource('main() { ^ }');
 
     await computeSuggestions();
-    expect(replacementOffset, completionOffset - 1);
-    expect(replacementLength, 1);
+    expect(replacementOffset, completionOffset);
+    expect(replacementLength, 0);
+
     // Not imported, so not suggested
-    assertNotSuggested('Foo');
-    assertNotSuggested('Foo2');
-    assertNotSuggested('Future');
+    assertNotSuggested('A');
+    assertNotSuggested('Completer');
   }
 
   test_CascadeExpression_selector1() async {
@@ -2367,6 +2362,36 @@
     assertSuggestClass('Object');
   }
 
+  test_functionTypeAlias_genericTypeAlias() async {
+    addSource('/a.dart', r'''
+typedef F = void Function();
+''');
+    addTestSource(r'''
+import 'a.dart';
+
+main() {
+  ^
+}
+''');
+    await computeSuggestions();
+    assertSuggestFunctionTypeAlias('F', 'void');
+  }
+
+  test_functionTypeAlias_old() async {
+    addSource('/a.dart', r'''
+typedef void F();
+''');
+    addTestSource(r'''
+import 'a.dart';
+
+main() {
+  ^
+}
+''');
+    await computeSuggestions();
+    assertSuggestFunctionTypeAlias('F', 'void');
+  }
+
   test_IfStatement() async {
     // SimpleIdentifier  IfStatement
     addTestSource('''
@@ -2433,7 +2458,6 @@
   }
 
   test_implicitCreation() async {
-    configurePreviewDart2();
     addSource('/a.dart', '''
 class A {
   A.a1();
@@ -2609,7 +2633,6 @@
   }
 
   test_InstanceCreationExpression_filter() async {
-    configurePreviewDart2();
     addSource('/a.dart', '''
 class A {}
 class B extends A {}
@@ -2637,7 +2660,12 @@
     assertSuggestConstructor('D', elemOffset: -1);
   }
 
+  @failingTest
   test_InstanceCreationExpression_imported() async {
+    // This is failing because the constructor for Future is added twice. I
+    // suspect that we're adding it from both dart:core and dart:async and are
+    // not noticing that it's the same element.
+
     // SimpleIdentifier  TypeName  ConstructorName  InstanceCreationExpression
     addSource('/testA.dart', '''
         int T1;
@@ -2676,15 +2704,15 @@
 
   test_InstanceCreationExpression_unimported() async {
     // SimpleIdentifier  TypeName  ConstructorName  InstanceCreationExpression
-    addSource('/testAB.dart', 'class Foo { }');
-    addTestSource('class C {foo(){new F^}}');
+    addSource('/testAB.dart', 'class Clip { }');
+    addTestSource('class A {foo(){new C^}}');
 
     await computeSuggestions();
     expect(replacementOffset, completionOffset - 1);
     expect(replacementLength, 1);
     // Not imported, so not suggested
-    assertNotSuggested('Future');
-    assertNotSuggested('Foo');
+    assertNotSuggested('Completer');
+    assertNotSuggested('Clip');
   }
 
   test_internal_sdk_libs() async {
@@ -3252,9 +3280,7 @@
     assertNotSuggested('_g');
     assertSuggestClass('bool');
     if (suggestConstructorsWithoutNew) {
-      // TODO(brianwilkerson) Should not suggest constructors for classes that
-      // cannot be instantiated.
-      assertSuggestConstructor('bool');
+      assertSuggestConstructor('List');
     }
   }
 
@@ -3464,48 +3490,6 @@
     assertNotSuggested('m');
   }
 
-  /**
-   * Ensure that completions in one context don't appear in another
-   */
-  test_multiple_contexts() async {
-    // Create a 2nd context with source
-    var context2 = AnalysisEngine.instance.createAnalysisContext();
-    context2.sourceFactory =
-        new SourceFactory([new DartUriResolver(sdk), resourceResolver]);
-    String content2 = 'class ClassFromAnotherContext { }';
-    Source source2 =
-        newFile('/context2/foo.dart', content: content2).createSource();
-    ChangeSet changeSet = new ChangeSet();
-    changeSet.addedSource(source2);
-    context2.applyChanges(changeSet);
-    context2.setContents(source2, content2);
-
-    // Resolve the source in the 2nd context and update the index
-    var result = context2.performAnalysisTask();
-    while (result.hasMoreWork) {
-      result = context2.performAnalysisTask();
-    }
-
-    // Check that source in 2nd context does not appear in completion in 1st
-    addSource('/context1/libA.dart', '''
-      library libA;
-      class ClassInLocalContext {int x;}''');
-    testFile = '/context1/completionTest.dart';
-    addTestSource('''
-      import "${convertAbsolutePathToUri("/context1/libA.dart")}";
-      import "${convertAbsolutePathToUri("/foo.dart")}";
-      main() {C^}
-      ''');
-
-    await computeSuggestions();
-    assertSuggestClass('ClassInLocalContext');
-    if (suggestConstructorsWithoutNew) {
-      assertSuggestConstructor('ClassInLocalContext');
-    }
-    // Assert contributor does not include results from 2nd context.
-    assertNotSuggested('ClassFromAnotherContext');
-  }
-
   test_new_instance() async {
     addTestSource('import "dart:math"; class A {x() {new Random().^}}');
 
@@ -3588,7 +3572,6 @@
         class B { factory B.bar(int x) => null; }
         main() {new ^}''');
 
-    await computeLibrariesContaining();
     await computeSuggestions();
     expect(replacementOffset, completionOffset);
     expect(replacementLength, 0);
@@ -3624,7 +3607,6 @@
         main() {new ^}
         var m;''');
 
-    await computeLibrariesContaining();
     await computeSuggestions();
     expect(replacementOffset, completionOffset);
     expect(replacementLength, 0);
diff --git a/pkg/analysis_server/test/services/completion/dart/inherited_reference_contributor_test.dart b/pkg/analysis_server/test/services/completion/dart/inherited_reference_contributor_test.dart
index d4689fe..d0b31fc 100644
--- a/pkg/analysis_server/test/services/completion/dart/inherited_reference_contributor_test.dart
+++ b/pkg/analysis_server/test/services/completion/dart/inherited_reference_contributor_test.dart
@@ -1,6 +1,7 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
+
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol_server.dart';
@@ -29,7 +30,7 @@
 
   /// Sanity check.  Permutations tested in local_ref_contributor.
   test_ArgDefaults_inherited_method_with_required_named() async {
-    addMetaPackageSource();
+    addMetaPackage();
     resolveSource('/testB.dart', '''
 import 'package:meta/meta.dart';
 
@@ -72,7 +73,7 @@
     assertNotSuggested('B');
     assertNotSuggested('A');
     assertNotSuggested('Object');
-    assertSuggestMethod('y', 'A', 'dynamic');
+    assertSuggestMethod('y', 'A', 'Future<dynamic>');
   }
 
   test_Block_inherited_imported() async {
diff --git a/pkg/analysis_server/test/services/completion/dart/library_member_contributor_test.dart b/pkg/analysis_server/test/services/completion/dart/library_member_contributor_test.dart
index 0bf6a76..2627c39 100644
--- a/pkg/analysis_server/test/services/completion/dart/library_member_contributor_test.dart
+++ b/pkg/analysis_server/test/services/completion/dart/library_member_contributor_test.dart
@@ -94,7 +94,6 @@
         part "${convertAbsolutePathToUri(testFile)}";''');
     addTestSource('part of testA; foo() {bar.^}');
     // Assume that libraries containing has been computed for part files
-    await computeLibrariesContaining();
     await computeSuggestions();
     assertSuggestClass('Future');
     assertSuggestFunction('loadLibrary', 'Future<dynamic>');
@@ -195,7 +194,6 @@
         part of testA;
         main() {b.^}''');
     // Assume that libraries containing has been computed for part files
-    await computeLibrariesContaining();
     await computeSuggestions();
     expect(replacementOffset, completionOffset);
     expect(replacementLength, 0);
diff --git a/pkg/analysis_server/test/services/completion/dart/library_prefix_contributor_test.dart b/pkg/analysis_server/test/services/completion/dart/library_prefix_contributor_test.dart
index 052103e..2d2cbac 100644
--- a/pkg/analysis_server/test/services/completion/dart/library_prefix_contributor_test.dart
+++ b/pkg/analysis_server/test/services/completion/dart/library_prefix_contributor_test.dart
@@ -304,7 +304,6 @@
     addTestSource('''
 part of testB;
 main() {new ^ String x = "hello";}''');
-    await computeLibrariesContaining();
     await computeSuggestions();
     assertSuggestLibraryPrefixes(['math', 't']);
   }
diff --git a/pkg/analysis_server/test/services/completion/dart/local_constructor_contributor_test.dart b/pkg/analysis_server/test/services/completion/dart/local_constructor_contributor_test.dart
index d361dc9..7a841e7 100644
--- a/pkg/analysis_server/test/services/completion/dart/local_constructor_contributor_test.dart
+++ b/pkg/analysis_server/test/services/completion/dart/local_constructor_contributor_test.dart
@@ -57,7 +57,7 @@
 
   /// Sanity check.  Permutations tested in local_ref_contributor.
   test_ArgDefaults_cons_with_required_named() async {
-    addMetaPackageSource();
+    addMetaPackage();
     addTestSource('''
 import 'package:meta/meta.dart';
 
@@ -1142,18 +1142,15 @@
   }
 
   test_Block_unimported() async {
-    addPackageSource('myBar', 'bar.dart', 'class Foo2 { Foo2() { } }');
-    addSource(
-        '/proj/testAB.dart', 'import "package:myBar/bar.dart"; class Foo { }');
-    testFile = '/proj/completionTest.dart';
-    addTestSource('class C {foo(){F^}}');
-    await computeSuggestions();
+    addPackageFile('aaa', 'a.dart', 'class A {}');
+    addTestSource('main() { ^ }');
 
-    expect(replacementOffset, completionOffset - 1);
-    expect(replacementLength, 1);
-    assertNotSuggested('Foo');
-    // TODO(danrubel) implement
-    assertNotSuggested('Foo2');
+    await computeSuggestions();
+    expect(replacementOffset, completionOffset);
+    expect(replacementLength, 0);
+
+    // Not imported, so not suggested
+    assertNotSuggested('A');
     assertNotSuggested('Future');
   }
 
@@ -3290,7 +3287,6 @@
 part of libA;
 class B { factory B.bar(int x) => null; }
 main() {new ^}''');
-    await computeLibrariesContaining();
     await computeSuggestions();
 
     expect(replacementOffset, completionOffset);
diff --git a/pkg/analysis_server/test/services/completion/dart/local_library_contributor_test.dart b/pkg/analysis_server/test/services/completion/dart/local_library_contributor_test.dart
index 07d9364..dbe61ec 100644
--- a/pkg/analysis_server/test/services/completion/dart/local_library_contributor_test.dart
+++ b/pkg/analysis_server/test/services/completion/dart/local_library_contributor_test.dart
@@ -39,7 +39,6 @@
         part of libA;
         class B { factory B.bar(int x) => null; }
         main() {new ^}''');
-    await computeLibrariesContaining();
     await computeSuggestions();
     expect(replacementOffset, completionOffset);
     expect(replacementLength, 0);
@@ -74,7 +73,6 @@
         class A { A({String boo: 'hoo'}) { } }
         main() {new ^}
         var m;''');
-    await computeLibrariesContaining();
     await computeSuggestions();
     expect(replacementOffset, completionOffset);
     expect(replacementLength, 0);
@@ -114,7 +112,6 @@
           a = new ^
         }
         var m;''');
-    await computeLibrariesContaining();
     await computeSuggestions();
     expect(replacementOffset, completionOffset);
     expect(replacementLength, 0);
@@ -165,7 +162,6 @@
           A a = new ^
         }
         var m;''');
-    await computeLibrariesContaining();
     await computeSuggestions();
     expect(replacementOffset, completionOffset);
     expect(replacementLength, 0);
@@ -214,7 +210,6 @@
         part of libA;
         class B { factory B.bar(int x) => null; }
         main() {^}''');
-    await computeLibrariesContaining();
     await computeSuggestions();
     expect(replacementOffset, completionOffset);
     expect(replacementLength, 0);
@@ -261,7 +256,6 @@
         class A { A({String boo: 'hoo'}) { } }
         main() {^}
         var m;''');
-    await computeLibrariesContaining();
     await computeSuggestions();
     expect(replacementOffset, completionOffset);
     expect(replacementLength, 0);
diff --git a/pkg/analysis_server/test/services/completion/dart/local_reference_contributor_test.dart b/pkg/analysis_server/test/services/completion/dart/local_reference_contributor_test.dart
index e96883c..2f3bad3 100644
--- a/pkg/analysis_server/test/services/completion/dart/local_reference_contributor_test.dart
+++ b/pkg/analysis_server/test/services/completion/dart/local_reference_contributor_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -87,7 +87,7 @@
   }
 
   test_ArgDefaults_function_with_optional_positional() async {
-    addMetaPackageSource();
+    addMetaPackage();
     addTestSource('''
 import 'package:meta/meta.dart';
 
@@ -102,7 +102,7 @@
   }
 
   test_ArgDefaults_function_with_required_named() async {
-    addMetaPackageSource();
+    addMetaPackage();
     addTestSource('''
 import 'package:meta/meta.dart';
 
@@ -117,7 +117,7 @@
   }
 
   test_ArgDefaults_method_with_required_named() async {
-    addMetaPackageSource();
+    addMetaPackage();
     addTestSource('''
 import 'package:meta/meta.dart';
 
@@ -783,7 +783,7 @@
     await computeSuggestions();
     expect(replacementOffset, completionOffset);
     expect(replacementLength, 0);
-    assertSuggestMethod('y', 'A', 'Future',
+    assertSuggestMethod('y', 'A', 'Future<dynamic>',
         relevance: DART_RELEVANCE_LOCAL_METHOD);
     assertSuggestClass('A');
     assertNotSuggested('Object');
@@ -1415,18 +1415,15 @@
   }
 
   test_Block_unimported() async {
-    addPackageSource('myBar', 'bar.dart', 'class Foo2 { Foo2() { } }');
-    addSource(
-        '/proj/testAB.dart', 'import "package:myBar/bar.dart"; class Foo { }');
-    testFile = '/proj/completionTest.dart';
-    addTestSource('class C {foo(){F^}}');
-    await computeSuggestions();
+    addPackageFile('aaa', 'a.dart', 'class A {}');
+    addTestSource('main() { ^ }');
 
-    expect(replacementOffset, completionOffset - 1);
-    expect(replacementLength, 1);
-    assertNotSuggested('Foo');
-    // TODO(danrubel) implement
-    assertNotSuggested('Foo2');
+    await computeSuggestions();
+    expect(replacementOffset, completionOffset);
+    expect(replacementLength, 0);
+
+    // Not imported, so not suggested
+    assertNotSuggested('A');
     assertNotSuggested('Future');
   }
 
@@ -1912,6 +1909,40 @@
     assertSuggestParameter('y', 'int');
   }
 
+  test_ConstructorFieldInitializer_name() async {
+    addTestSource('''
+class A {
+  final int foo;
+  A() : ^
+}
+''');
+    await computeSuggestions();
+
+    expect(replacementOffset, completionOffset);
+    expect(replacementLength, 0);
+    assertSuggestField('foo', 'int', relevance: DART_RELEVANCE_LOCAL_FIELD);
+  }
+
+  test_ConstructorFieldInitializer_value() async {
+    addTestSource('''
+var foo = 0;
+
+class A {
+  final int bar;
+  A() : bar = ^
+}
+''');
+    await computeSuggestions();
+
+    expect(replacementOffset, completionOffset);
+    expect(replacementLength, 0);
+    assertSuggestTopLevelVar(
+      'foo',
+      'int',
+      relevance: DART_RELEVANCE_LOCAL_TOP_LEVEL_VARIABLE,
+    );
+  }
+
   test_ConstructorName_importedClass() async {
     // SimpleIdentifier  PrefixedIdentifier  TypeName  ConstructorName
     // InstanceCreationExpression
@@ -2747,6 +2778,28 @@
     assertNotSuggested('Object');
   }
 
+  test_functionTypeAlias_genericTypeAlias() async {
+    addTestSource(r'''
+typedef F = void Function();
+main() {
+  ^
+}
+''');
+    await computeSuggestions();
+    assertSuggestFunctionTypeAlias('F', 'void');
+  }
+
+  test_functionTypeAlias_old() async {
+    addTestSource(r'''
+typedef void F();
+main() {
+  ^
+}
+''');
+    await computeSuggestions();
+    assertSuggestFunctionTypeAlias('F', 'void');
+  }
+
   test_IfStatement() async {
     // SimpleIdentifier  IfStatement
     addTestSource('''
@@ -3820,7 +3873,6 @@
 class A { A({String boo: 'hoo'}) { } }
 main() {new ^}
 var m;''');
-    await computeLibrariesContaining();
     await computeSuggestions();
 
     expect(replacementOffset, completionOffset);
diff --git a/pkg/analysis_server/test/services/completion/dart/override_contributor_test.dart b/pkg/analysis_server/test/services/completion/dart/override_contributor_test.dart
index 8d5a329..cd1ffcc 100644
--- a/pkg/analysis_server/test/services/completion/dart/override_contributor_test.dart
+++ b/pkg/analysis_server/test/services/completion/dart/override_contributor_test.dart
@@ -116,7 +116,6 @@
 }
 ''');
     // assume information for context.getLibrariesContaining has been cached
-    await computeLibrariesContaining();
     await computeSuggestions();
     _assertOverride('''
 @override
diff --git a/pkg/analysis_server/test/services/completion/dart/static_member_contributor_test.dart b/pkg/analysis_server/test/services/completion/dart/static_member_contributor_test.dart
index 2987710..1907389 100644
--- a/pkg/analysis_server/test/services/completion/dart/static_member_contributor_test.dart
+++ b/pkg/analysis_server/test/services/completion/dart/static_member_contributor_test.dart
@@ -98,7 +98,6 @@
   }
 
   test_implicitCreation() async {
-    configurePreviewDart2();
     addSource('/a.dart', '''
 class A {
   A.foo();
@@ -257,7 +256,7 @@
 import "dart:async" as async;
 void main() {async.Future.^.w()}''');
     await computeSuggestions();
-    assertSuggestMethod('wait', 'Future', 'Future<dynamic>');
+    assertSuggestMethod('wait', 'Future', 'Future<List<T>>');
   }
 
   test_PrefixedIdentifier_class_const() async {
diff --git a/pkg/analysis_server/test/services/completion/dart/type_member_contributor_test.dart b/pkg/analysis_server/test/services/completion/dart/type_member_contributor_test.dart
index a39270d..d36ca4d 100644
--- a/pkg/analysis_server/test/services/completion/dart/type_member_contributor_test.dart
+++ b/pkg/analysis_server/test/services/completion/dart/type_member_contributor_test.dart
@@ -81,7 +81,7 @@
   }
 
   test_ArgDefaults_method_with_optional_positional() async {
-    addMetaPackageSource();
+    addMetaPackage();
     addTestSource('''
 import 'package:meta/meta.dart';
 
@@ -96,7 +96,7 @@
   }
 
   test_ArgDefaults_method_with_required_named() async {
-    addMetaPackageSource();
+    addMetaPackage();
     addTestSource('''
 import 'package:meta/meta.dart';
 
@@ -1085,17 +1085,15 @@
   }
 
   test_Block_unimported() async {
-    addPackageSource('myBar', 'bar.dart', 'class Foo2 { Foo2() { } }');
-    addSource(
-        '/proj/testAB.dart', 'import "package:myBar/bar.dart"; class Foo { }');
-    testFile = resourceProvider.convertPath('/proj/completionTest.dart');
-    addTestSource('class C {foo(){F^}}');
+    addPackageFile('aaa', 'a.dart', 'class A {}');
+    addTestSource('main() { ^ }');
+
     await computeSuggestions();
-    expect(replacementOffset, completionOffset - 1);
-    expect(replacementLength, 1);
-    assertNotSuggested('Foo');
-    // TODO(danrubel) implement
-    assertNotSuggested('Foo2');
+    expect(replacementOffset, completionOffset);
+    expect(replacementLength, 0);
+
+    // Not imported, so not suggested
+    assertNotSuggested('A');
     assertNotSuggested('Future');
   }
 
diff --git a/pkg/analysis_server/test/services/completion/dart/uri_contributor_test.dart b/pkg/analysis_server/test/services/completion/dart/uri_contributor_test.dart
index 7d66b12..c283cde 100644
--- a/pkg/analysis_server/test/services/completion/dart/uri_contributor_test.dart
+++ b/pkg/analysis_server/test/services/completion/dart/uri_contributor_test.dart
@@ -67,9 +67,9 @@
   }
 
   test_export_package2() async {
-    addPackageSource('foo', 'foo.dart', 'library foo;');
-    addPackageSource('foo', 'baz/too.dart', 'library too;');
-    addPackageSource('bar', 'bar.dart', 'library bar;');
+    addPackageFile('foo', 'foo.dart', 'library foo;');
+    addPackageFile('foo', 'baz/too.dart', 'library too;');
+    addPackageFile('bar', 'bar.dart', 'library bar;');
     addTestSource('export "package:foo/baz/^" import');
     await computeSuggestions();
     assertSuggest('package:foo/baz/too.dart',
@@ -79,9 +79,9 @@
   test_export_package2_off() async {
     try {
       UriContributor.suggestFilePaths = false;
-      addPackageSource('foo', 'foo.dart', 'library foo;');
-      addPackageSource('foo', 'baz/too.dart', 'library too;');
-      addPackageSource('bar', 'bar.dart', 'library bar;');
+      addPackageFile('foo', 'foo.dart', 'library foo;');
+      addPackageFile('foo', 'baz/too.dart', 'library too;');
+      addPackageFile('bar', 'bar.dart', 'library bar;');
       addTestSource('export "package:foo/baz/^" import');
       await computeSuggestions();
       assertNotSuggested('package:foo/baz/too.dart');
@@ -144,7 +144,7 @@
   }
 
   test_import_file() async {
-    testFile = '/proj/completion.dart';
+    testFile = convertPath('/proj/completion.dart');
     addSource('/proj/other.dart', 'library other;');
     addSource('/proj/foo/bar.dart', 'library bar;');
     addSource('/blat.dart', 'library blat;');
@@ -161,7 +161,7 @@
   }
 
   test_import_file2() async {
-    testFile = '/proj/completion.dart';
+    testFile = convertPath('/proj/completion.dart');
     addSource('/proj/other.dart', 'library other;');
     addSource('/proj/foo/bar.dart', 'library bar;');
     addSource('/blat.dart', 'library blat;');
@@ -180,7 +180,7 @@
   test_import_file2_off() async {
     try {
       UriContributor.suggestFilePaths = false;
-      testFile = '/proj/completion.dart';
+      testFile = convertPath('/proj/completion.dart');
       addSource('/proj/other.dart', 'library other;');
       addSource('/proj/foo/bar.dart', 'library bar;');
       addSource('/blat.dart', 'library blat;');
@@ -200,7 +200,7 @@
   }
 
   test_import_file_child() async {
-    testFile = '/proj/completion.dart';
+    testFile = convertPath('/proj/completion.dart');
     addSource('/proj/other.dart', 'library other;');
     addSource('/proj/foo/bar.dart', 'library bar;');
     addSource('/blat.dart', 'library blat;');
@@ -217,7 +217,7 @@
   }
 
   test_import_file_outside_lib() async {
-    testFile = '/proj/lib/completion.dart';
+    testFile = convertPath('/proj/lib/completion.dart');
     addSource('/proj/lib/other.dart', 'library other;');
     addSource('/proj/lib/foo/bar.dart', 'library bar;');
     addSource('/proj/blat.dart', 'library blat;');
@@ -237,7 +237,7 @@
   }
 
   test_import_file_parent() async {
-    testFile = '/proj/completion.dart';
+    testFile = convertPath('/proj/completion.dart');
     addSource('/proj/other.dart', 'library other;');
     addSource('/proj/foo/bar.dart', 'library bar;');
     addSource('/blat.dart', 'library blat;');
@@ -256,7 +256,7 @@
   }
 
   test_import_file_parent2() async {
-    testFile = '/proj/completion.dart';
+    testFile = convertPath('/proj/completion.dart');
     addSource('/proj/other.dart', 'library other;');
     addSource('/proj/foo/bar.dart', 'library bar;');
     addSource('/blat.dart', 'library blat;');
@@ -273,7 +273,7 @@
   }
 
   test_import_no_dot_folders() async {
-    testFile = '/proj/completion.dart';
+    testFile = convertPath('/proj/completion.dart');
     addSource('/proj/other.dart', 'library other;');
     newFolder('/proj/.fooFolder');
     addTestSource('import "package:^";');
@@ -282,7 +282,7 @@
   }
 
   test_import_only_dart_files() async {
-    testFile = '/proj/completion.dart';
+    testFile = convertPath('/proj/completion.dart');
     addSource('/proj/other.dart', 'library other;');
     newFile('/proj/analysis_options.yaml', content: '# analysis options');
     addTestSource('import "package:^";');
@@ -291,9 +291,9 @@
   }
 
   test_import_package() async {
-    addPackageSource('foo', 'foo.dart', 'library foo;');
-    addPackageSource('foo', 'baz/too.dart', 'library too;');
-    addPackageSource('bar', 'bar.dart', 'library bar;');
+    addPackageFile('foo', 'foo.dart', 'library foo;');
+    addPackageFile('foo', 'baz/too.dart', 'library too;');
+    addPackageFile('bar', 'bar.dart', 'library bar;');
     addTestSource('import "p^" import');
     await computeSuggestions();
     expect(replacementOffset, completionOffset - 1);
@@ -310,9 +310,9 @@
   }
 
   test_import_package2() async {
-    addPackageSource('foo', 'foo.dart', 'library foo;');
-    addPackageSource('foo', 'baz/too.dart', 'library too;');
-    addPackageSource('bar', 'bar.dart', 'library bar;');
+    addPackageFile('foo', 'foo.dart', 'library foo;');
+    addPackageFile('foo', 'baz/too.dart', 'library too;');
+    addPackageFile('bar', 'bar.dart', 'library bar;');
     addTestSource('import "package:foo/baz/^" import');
     await computeSuggestions();
     assertSuggest('package:foo/baz/too.dart',
@@ -322,9 +322,9 @@
   test_import_package2_off() async {
     try {
       UriContributor.suggestFilePaths = false;
-      addPackageSource('foo', 'foo.dart', 'library foo;');
-      addPackageSource('foo', 'baz/too.dart', 'library too;');
-      addPackageSource('bar', 'bar.dart', 'library bar;');
+      addPackageFile('foo', 'foo.dart', 'library foo;');
+      addPackageFile('foo', 'baz/too.dart', 'library too;');
+      addPackageFile('bar', 'bar.dart', 'library bar;');
       addTestSource('import "package:foo/baz/^" import');
       await computeSuggestions();
       assertNotSuggested('package:foo/baz/too.dart');
@@ -334,9 +334,9 @@
   }
 
   test_import_package2_raw() async {
-    addPackageSource('foo', 'foo.dart', 'library foo;');
-    addPackageSource('foo', 'baz/too.dart', 'library too;');
-    addPackageSource('bar', 'bar.dart', 'library bar;');
+    addPackageFile('foo', 'foo.dart', 'library foo;');
+    addPackageFile('foo', 'baz/too.dart', 'library too;');
+    addPackageFile('bar', 'bar.dart', 'library bar;');
     addTestSource('import r"package:foo/baz/^" import');
     await computeSuggestions();
     assertSuggest('package:foo/baz/too.dart',
@@ -344,9 +344,9 @@
   }
 
   test_import_package2_with_trailing() async {
-    addPackageSource('foo', 'foo.dart', 'library foo;');
-    addPackageSource('foo', 'baz/too.dart', 'library too;');
-    addPackageSource('bar', 'bar.dart', 'library bar;');
+    addPackageFile('foo', 'foo.dart', 'library foo;');
+    addPackageFile('foo', 'baz/too.dart', 'library too;');
+    addPackageFile('bar', 'bar.dart', 'library bar;');
     addTestSource('import "package:foo/baz/^.dart" import');
     await computeSuggestions();
     assertSuggest('package:foo/baz/too.dart',
@@ -356,8 +356,8 @@
   }
 
   test_import_package_missing_lib() async {
-    var pkgSrc = addPackageSource('bar', 'bar.dart', 'library bar;');
-    deleteFolder(dirname(pkgSrc.fullName));
+    var pkgFile = addPackageFile('bar', 'bar.dart', 'library bar;');
+    deleteFolder(pkgFile.parent.path);
     addTestSource('import "p^" class');
     await computeSuggestions();
     expect(replacementOffset, completionOffset - 1);
@@ -368,9 +368,9 @@
   }
 
   test_import_package_raw() async {
-    addPackageSource('foo', 'foo.dart', 'library foo;');
-    addPackageSource('foo', 'baz/too.dart', 'library too;');
-    addPackageSource('bar', 'bar.dart', 'library bar;');
+    addPackageFile('foo', 'foo.dart', 'library foo;');
+    addPackageFile('foo', 'baz/too.dart', 'library too;');
+    addPackageFile('bar', 'bar.dart', 'library bar;');
     addTestSource('import r"p^" import');
     await computeSuggestions();
     expect(replacementOffset, completionOffset - 1);
@@ -460,7 +460,7 @@
   }
 
   test_part_file() async {
-    testFile = '/proj/completion.dart';
+    testFile = convertPath('/proj/completion.dart');
     addSource('/proj/other.dart', 'library other;');
     addSource('/proj/foo/bar.dart', 'library bar;');
     addSource('/blat.dart', 'library blat;');
@@ -477,7 +477,7 @@
   }
 
   test_part_file2() async {
-    testFile = '/proj/completion.dart';
+    testFile = convertPath('/proj/completion.dart');
     addSource('/proj/other.dart', 'library other;');
     addSource('/proj/foo/bar.dart', 'library bar;');
     addSource('/blat.dart', 'library blat;');
@@ -494,7 +494,7 @@
   }
 
   test_part_file_child() async {
-    testFile = '/proj/completion.dart';
+    testFile = convertPath('/proj/completion.dart');
     addSource('/proj/other.dart', 'library other;');
     addSource('/proj/foo/bar.dart', 'library bar;');
     addSource('/blat.dart', 'library blat;');
@@ -511,7 +511,7 @@
   }
 
   test_part_file_parent() async {
-    testFile = '/proj/completion.dart';
+    testFile = convertPath('/proj/completion.dart');
     addSource('/proj/other.dart', 'library other;');
     addSource('/proj/foo/bar.dart', 'library bar;');
     addSource('/blat.dart', 'library blat;');
@@ -541,7 +541,7 @@
   }
 
   test_import_file() async {
-    testFile = '\\proj\\completion.dart';
+    testFile = convertPath('\\proj\\completion.dart');
     addSource('\\proj\\other.dart', 'library other;');
     addSource('\\proj\\foo\\bar.dart', 'library bar;');
     addSource('\\blat.dart', 'library blat;');
@@ -558,7 +558,7 @@
   }
 
   test_import_file2() async {
-    testFile = '\\proj\\completion.dart';
+    testFile = convertPath('\\proj\\completion.dart');
     addSource('\\proj\\other.dart', 'library other;');
     addSource('\\proj\\foo\\bar.dart', 'library bar;');
     addSource('\\blat.dart', 'library blat;');
@@ -575,7 +575,7 @@
   }
 
   test_import_file_child() async {
-    testFile = '\\proj\\completion.dart';
+    testFile = convertPath('\\proj\\completion.dart');
     addSource('\\proj\\other.dart', 'library other;');
     addSource('\\proj\\foo\\bar.dart', 'library bar;');
     addSource('\\blat.dart', 'library blat;');
@@ -592,7 +592,7 @@
   }
 
   test_import_file_parent() async {
-    testFile = '\\proj\\completion.dart';
+    testFile = convertPath('\\proj\\completion.dart');
     addSource('\\proj\\other.dart', 'library other;');
     addSource('\\proj\\foo\\bar.dart', 'library bar;');
     addSource('\\blat.dart', 'library blat;');
@@ -609,7 +609,7 @@
   }
 
   test_import_file_parent2() async {
-    testFile = '\\proj\\completion.dart';
+    testFile = convertPath('\\proj\\completion.dart');
     addSource('\\proj\\other.dart', 'library other;');
     addSource('\\proj\\foo\\bar.dart', 'library bar;');
     addSource('\\blat.dart', 'library blat;');
@@ -626,7 +626,7 @@
   }
 
   test_part_file() async {
-    testFile = '\\proj\\completion.dart';
+    testFile = convertPath('\\proj\\completion.dart');
     addSource('\\proj\\other.dart', 'library other;');
     addSource('\\proj\\foo\\bar.dart', 'library bar;');
     addSource('\\blat.dart', 'library blat;');
@@ -643,7 +643,7 @@
   }
 
   test_part_file2() async {
-    testFile = '\\proj\\completion.dart';
+    testFile = convertPath('\\proj\\completion.dart');
     addSource('\\proj\\other.dart', 'library other;');
     addSource('\\proj\\foo\\bar.dart', 'library bar;');
     addSource('\\blat.dart', 'library blat;');
@@ -660,7 +660,7 @@
   }
 
   test_part_file_child() async {
-    testFile = '\\proj\\completion.dart';
+    testFile = convertPath('\\proj\\completion.dart');
     addSource('\\proj\\other.dart', 'library other;');
     addSource('\\proj\\foo\\bar.dart', 'library bar;');
     addSource('\\blat.dart', 'library blat;');
@@ -677,7 +677,7 @@
   }
 
   test_part_file_parent() async {
-    testFile = '\\proj\\completion.dart';
+    testFile = convertPath('\\proj\\completion.dart');
     addSource('\\proj\\other.dart', 'library other;');
     addSource('\\proj\\foo\\bar.dart', 'library bar;');
     addSource('\\blat.dart', 'library blat;');
diff --git a/pkg/analysis_server/test/services/completion/postfix/postfix_completion_test.dart b/pkg/analysis_server/test/services/completion/postfix/postfix_completion_test.dart
index e72c2e8..1fa242e 100644
--- a/pkg/analysis_server/test/services/completion/postfix/postfix_completion_test.dart
+++ b/pkg/analysis_server/test/services/completion/postfix/postfix_completion_test.dart
@@ -79,15 +79,7 @@
     verifyNoTestUnitErrors = false;
     await resolveTestUnit(code);
 
-    PostfixCompletionContext context = new PostfixCompletionContext(
-        testFile,
-        testAnalysisResult.lineInfo,
-        offset,
-        key,
-        testAnalysisResult.driver,
-        testUnit,
-        testUnitElement,
-        testAnalysisResult.errors);
+    var context = new PostfixCompletionContext(testAnalysisResult, offset, key);
     processor = new PostfixCompletionProcessor(context);
   }
 }
diff --git a/pkg/analysis_server/test/services/completion/statement/statement_completion_test.dart b/pkg/analysis_server/test/services/completion/statement/statement_completion_test.dart
index 9ef3195..3fb9792 100644
--- a/pkg/analysis_server/test/services/completion/statement/statement_completion_test.dart
+++ b/pkg/analysis_server/test/services/completion/statement/statement_completion_test.dart
@@ -4,7 +4,7 @@
 
 import 'package:analysis_server/src/protocol_server.dart';
 import 'package:analysis_server/src/services/completion/statement/statement_completion.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -63,14 +63,8 @@
 
   _computeCompletion(int offset) async {
     driver.changeFile(testFile);
-    AnalysisResult result = await driver.getResult(testFile);
-    StatementCompletionContext context = new StatementCompletionContext(
-        testFile,
-        result.lineInfo,
-        offset,
-        testUnit,
-        testUnitElement,
-        result.errors);
+    ResolvedUnitResult result = await session.getResolvedUnit(testFile);
+    var context = new StatementCompletionContext(result, offset);
     StatementCompletionProcessor processor =
         new StatementCompletionProcessor(context);
     StatementCompletion completion = await processor.compute();
diff --git a/pkg/analysis_server/test/services/correction/assist_test.dart b/pkg/analysis_server/test/services/correction/assist_test.dart
deleted file mode 100644
index b9e542f..0000000
--- a/pkg/analysis_server/test/services/correction/assist_test.dart
+++ /dev/null
@@ -1,6875 +0,0 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:async';
-
-import 'package:analysis_server/plugin/edit/assist/assist_core.dart';
-import 'package:analysis_server/plugin/edit/assist/assist_dart.dart';
-import 'package:analysis_server/src/services/correction/assist.dart';
-import 'package:analysis_server/src/services/correction/assist_internal.dart';
-import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/ast/standard_resolution_map.dart';
-import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer_plugin/protocol/protocol_common.dart';
-import 'package:analyzer_plugin/utilities/assist/assist.dart';
-import 'package:plugin/manager.dart';
-import 'package:test/test.dart';
-import 'package:test_reflective_loader/test_reflective_loader.dart';
-
-import '../../abstract_single_unit.dart';
-
-main() {
-  defineReflectiveSuite(() {
-    defineReflectiveTests(AssistProcessorTest);
-  });
-}
-
-@reflectiveTest
-class AssistProcessorTest extends AbstractSingleUnitTest {
-  int offset;
-  int length;
-
-  Assist assist;
-  SourceChange change;
-  String resultCode;
-  LinkedEditGroup linkedPositionGroup;
-
-  bool get omitNew => true;
-
-  /**
-   * Asserts that there is an [Assist] of the given [kind] at [offset] which
-   * produces the [expected] code when applied to [testCode].
-   */
-  assertHasAssist(AssistKind kind, String expected) async {
-    assist = await _assertHasAssist(kind);
-    change = assist.change;
-    expect(change.id, kind.id);
-    // apply to "file"
-    List<SourceFileEdit> fileEdits = change.edits;
-    expect(fileEdits, hasLength(1));
-    resultCode = SourceEdit.applySequence(testCode, change.edits[0].edits);
-    // verify
-    expect(resultCode, expected);
-  }
-
-  /**
-   * Calls [assertHasAssist] at the offset of [offsetSearch] in [testCode].
-   */
-  assertHasAssistAt(
-      String offsetSearch, AssistKind kind, String expected) async {
-    offset = findOffset(offsetSearch);
-    await assertHasAssist(kind, expected);
-  }
-
-  /**
-   * Asserts that there is no [Assist] of the given [kind] at [offset].
-   */
-  assertNoAssist(AssistKind kind) async {
-    List<Assist> assists = await _computeAssists();
-    for (Assist assist in assists) {
-      if (assist.kind == kind) {
-        fail('Unexpected assist $kind in\n${assists.join('\n')}');
-      }
-    }
-  }
-
-  /**
-   * Calls [assertNoAssist] at the offset of [offsetSearch] in [testCode].
-   */
-  assertNoAssistAt(String offsetSearch, AssistKind kind) async {
-    offset = findOffset(offsetSearch);
-    await assertNoAssist(kind);
-  }
-
-  List<LinkedEditSuggestion> expectedSuggestions(
-      LinkedEditSuggestionKind kind, List<String> values) {
-    return values.map((value) {
-      return new LinkedEditSuggestion(value, kind);
-    }).toList();
-  }
-
-  void processRequiredPlugins() {
-    ExtensionManager manager = new ExtensionManager();
-    manager.processPlugins(AnalysisEngine.instance.requiredPlugins);
-  }
-
-  void setUp() {
-    super.setUp();
-    offset = 0;
-    length = 0;
-  }
-
-  test_addTypeAnnotation_BAD_privateType_closureParameter() async {
-    addSource('/project/my_lib.dart', '''
-library my_lib;
-class A {}
-class _B extends A {}
-foo(f(_B p)) {}
-''');
-    await resolveTestUnit('''
-import 'my_lib.dart';
-main() {
-  foo((test) {});
-}
- ''');
-    await assertNoAssistAt('test)', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_BAD_privateType_declaredIdentifier() async {
-    addSource('/project/my_lib.dart', '''
-library my_lib;
-class A {}
-class _B extends A {}
-List<_B> getValues() => [];
-''');
-    await resolveTestUnit('''
-import 'my_lib.dart';
-class A<T> {
-  main() {
-    for (var item in getValues()) {
-    }
-  }
-}
-''');
-    await assertNoAssistAt('var item', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_BAD_privateType_list() async {
-    // This is now failing because we're suggesting "List" rather than nothing.
-    // Is it really better to produce nothing?
-    addSource('/project/my_lib.dart', '''
-library my_lib;
-class A {}
-class _B extends A {}
-List<_B> getValues() => [];
-''');
-    await resolveTestUnit('''
-import 'my_lib.dart';
-main() {
-  var v = getValues();
-}
-''');
-    await assertHasAssistAt('var ', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-import 'my_lib.dart';
-main() {
-  List v = getValues();
-}
-''');
-  }
-
-  test_addTypeAnnotation_BAD_privateType_variable() async {
-    addSource('/project/my_lib.dart', '''
-library my_lib;
-class A {}
-class _B extends A {}
-_B getValue() => new _B();
-''');
-    await resolveTestUnit('''
-import 'my_lib.dart';
-main() {
-  var v = getValue();
-}
-''');
-    await assertNoAssistAt('var ', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_classField_OK_final() async {
-    await resolveTestUnit('''
-class A {
-  final f = 0;
-}
-''');
-    await assertHasAssistAt('final ', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-class A {
-  final int f = 0;
-}
-''');
-  }
-
-  test_addTypeAnnotation_classField_OK_int() async {
-    await resolveTestUnit('''
-class A {
-  var f = 0;
-}
-''');
-    await await assertHasAssistAt(
-        'var ', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-class A {
-  int f = 0;
-}
-''');
-  }
-
-  test_addTypeAnnotation_declaredIdentifier_BAD_hasTypeAnnotation() async {
-    await resolveTestUnit('''
-main(List<String> items) {
-  for (String item in items) {
-  }
-}
-''');
-    await assertNoAssistAt('item in', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_declaredIdentifier_BAD_inForEachBody() async {
-    await resolveTestUnit('''
-main(List<String> items) {
-  for (var item in items) {
-    42;
-  }
-}
-''');
-    await assertNoAssistAt('42;', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_declaredIdentifier_BAD_unknownType() async {
-    verifyNoTestUnitErrors = false;
-    await resolveTestUnit('''
-main() {
-  for (var item in unknownList) {
-  }
-}
-''');
-    await assertNoAssistAt('item in', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_declaredIdentifier_generic_OK() async {
-    await resolveTestUnit('''
-class A<T> {
-  main(List<List<T>> items) {
-    for (var item in items) {
-    }
-  }
-}
-''');
-    await assertHasAssistAt('item in', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-class A<T> {
-  main(List<List<T>> items) {
-    for (List<T> item in items) {
-    }
-  }
-}
-''');
-  }
-
-  test_addTypeAnnotation_declaredIdentifier_OK() async {
-    await resolveTestUnit('''
-main(List<String> items) {
-  for (var item in items) {
-  }
-}
-''');
-    // on identifier
-    await assertHasAssistAt('item in', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-main(List<String> items) {
-  for (String item in items) {
-  }
-}
-''');
-    // on "for"
-    await assertHasAssistAt('for (', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-main(List<String> items) {
-  for (String item in items) {
-  }
-}
-''');
-  }
-
-  test_addTypeAnnotation_declaredIdentifier_OK_addImport_dartUri() async {
-    addSource('/project/my_lib.dart', r'''
-import 'dart:async';
-List<Future<int>> getFutures() => null;
-''');
-    await resolveTestUnit('''
-import 'my_lib.dart';
-main() {
-  for (var future in getFutures()) {
-  }
-}
-''');
-    await assertHasAssistAt('future in', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-import 'dart:async';
-
-import 'my_lib.dart';
-main() {
-  for (Future<int> future in getFutures()) {
-  }
-}
-''');
-  }
-
-  test_addTypeAnnotation_declaredIdentifier_OK_final() async {
-    await resolveTestUnit('''
-main(List<String> items) {
-  for (final item in items) {
-  }
-}
-''');
-    await assertHasAssistAt('item in', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-main(List<String> items) {
-  for (final String item in items) {
-  }
-}
-''');
-  }
-
-  test_addTypeAnnotation_local_BAD_bottom() async {
-    await resolveTestUnit('''
-main() {
-  var v = throw 42;
-}
-''');
-    await assertNoAssistAt('var ', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_local_BAD_hasTypeAnnotation() async {
-    await resolveTestUnit('''
-main() {
-  int v = 42;
-}
-''');
-    await assertNoAssistAt(' = 42', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_local_BAD_multiple() async {
-    await resolveTestUnit('''
-main() {
-  var a = 1, b = '';
-}
-''');
-    await assertNoAssistAt('var ', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_local_BAD_noValue() async {
-    verifyNoTestUnitErrors = false;
-    await resolveTestUnit('''
-main() {
-  var v;
-}
-''');
-    await assertNoAssistAt('var ', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_local_BAD_null() async {
-    await resolveTestUnit('''
-main() {
-  var v = null;
-}
-''');
-    await assertNoAssistAt('var ', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_local_BAD_onInitializer() async {
-    await resolveTestUnit('''
-main() {
-  var abc = 0;
-}
-''');
-    await assertNoAssistAt('0;', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_local_BAD_unknown() async {
-    verifyNoTestUnitErrors = false;
-    await resolveTestUnit('''
-main() {
-  var v = unknownVar;
-}
-''');
-    await assertNoAssistAt('var ', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_local_generic_OK_literal() async {
-    await resolveTestUnit('''
-class A {
-  main(List<int> items) {
-    var v = items;
-  }
-}
-''');
-    await assertHasAssistAt('v =', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-class A {
-  main(List<int> items) {
-    List<int> v = items;
-  }
-}
-''');
-  }
-
-  test_addTypeAnnotation_local_generic_OK_local() async {
-    await resolveTestUnit('''
-class A<T> {
-  main(List<T> items) {
-    var v = items;
-  }
-}
-''');
-    await assertHasAssistAt('v =', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-class A<T> {
-  main(List<T> items) {
-    List<T> v = items;
-  }
-}
-''');
-  }
-
-  test_addTypeAnnotation_local_OK_addImport_dartUri() async {
-    addSource('/project/my_lib.dart', r'''
-import 'dart:async';
-Future<int> getFutureInt() => null;
-''');
-    await resolveTestUnit('''
-import 'my_lib.dart';
-main() {
-  var v = getFutureInt();
-}
-''');
-    await assertHasAssistAt('v =', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-import 'dart:async';
-
-import 'my_lib.dart';
-main() {
-  Future<int> v = getFutureInt();
-}
-''');
-  }
-
-  test_addTypeAnnotation_local_OK_addImport_notLibraryUnit() async {
-    // prepare library
-    addSource('/project/my_lib.dart', r'''
-import 'dart:async';
-Future<int> getFutureInt() => null;
-''');
-    // prepare code
-    String appCode = r'''
-library my_app;
-import 'my_lib.dart';
-part 'test.dart';
-''';
-    testCode = r'''
-part of my_app;
-main() {
-  var v = getFutureInt();
-}
-''';
-    // add sources
-    addSource('/project/app.dart', appCode);
-    testSource = addSource('/project/test.dart', testCode);
-    // resolve
-    await resolveTestUnit(testCode);
-    // prepare the assist
-    offset = findOffset('v = ');
-    assist = await _assertHasAssist(DartAssistKind.ADD_TYPE_ANNOTATION);
-    change = assist.change;
-    // verify
-    {
-      var testFileEdit = change.getFileEdit(convertPath('/project/app.dart'));
-      var resultCode = SourceEdit.applySequence(appCode, testFileEdit.edits);
-      expect(resultCode, '''
-library my_app;
-import 'dart:async';
-
-import 'my_lib.dart';
-part 'test.dart';
-''');
-    }
-    {
-      var testFileEdit = change.getFileEdit(convertPath('/project/test.dart'));
-      var resultCode = SourceEdit.applySequence(testCode, testFileEdit.edits);
-      expect(resultCode, '''
-part of my_app;
-main() {
-  Future<int> v = getFutureInt();
-}
-''');
-    }
-  }
-
-  test_addTypeAnnotation_local_OK_addImport_relUri() async {
-    addSource('/project/aa/bbb/lib_a.dart', r'''
-class MyClass {}
-''');
-    addSource('/project/ccc/lib_b.dart', r'''
-import '../aa/bbb/lib_a.dart';
-MyClass newMyClass() => null;
-''');
-    await resolveTestUnit('''
-import 'ccc/lib_b.dart';
-main() {
-  var v = newMyClass();
-}
-''');
-    await assertHasAssistAt('v =', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-import 'aa/bbb/lib_a.dart';
-import 'ccc/lib_b.dart';
-main() {
-  MyClass v = newMyClass();
-}
-''');
-  }
-
-  test_addTypeAnnotation_local_OK_Function() async {
-    await resolveTestUnit('''
-main() {
-  var v = () => 1;
-}
-''');
-    await assertHasAssistAt('v =', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-main() {
-  int Function() v = () => 1;
-}
-''');
-  }
-
-  test_addTypeAnnotation_local_OK_int() async {
-    await resolveTestUnit('''
-main() {
-  var v = 0;
-}
-''');
-    await assertHasAssistAt('v =', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-main() {
-  int v = 0;
-}
-''');
-  }
-
-  test_addTypeAnnotation_local_OK_List() async {
-    await resolveTestUnit('''
-main() {
-  var v = <String>[];
-}
-''');
-    await assertHasAssistAt('v =', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-main() {
-  List<String> v = <String>[];
-}
-''');
-  }
-
-  test_addTypeAnnotation_local_OK_localType() async {
-    await resolveTestUnit('''
-class C {}
-C f() => null;
-main() {
-  var x = f();
-}
-''');
-    await assertHasAssistAt('x =', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-class C {}
-C f() => null;
-main() {
-  C x = f();
-}
-''');
-  }
-
-  test_addTypeAnnotation_local_OK_onName() async {
-    await resolveTestUnit('''
-main() {
-  var abc = 0;
-}
-''');
-    await assertHasAssistAt('bc', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-main() {
-  int abc = 0;
-}
-''');
-  }
-
-  test_addTypeAnnotation_local_OK_onVar() async {
-    await resolveTestUnit('''
-main() {
-  var v = 0;
-}
-''');
-    await assertHasAssistAt('var ', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-main() {
-  int v = 0;
-}
-''');
-  }
-
-  test_addTypeAnnotation_OK_privateType_sameLibrary() async {
-    await resolveTestUnit('''
-class _A {}
-_A getValue() => new _A();
-main() {
-  var v = getValue();
-}
-''');
-    await assertHasAssistAt('var ', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-class _A {}
-_A getValue() => new _A();
-main() {
-  _A v = getValue();
-}
-''');
-  }
-
-  test_addTypeAnnotation_parameter_BAD_hasExplicitType() async {
-    await resolveTestUnit('''
-foo(f(int p)) {}
-main() {
-  foo((num test) {});
-}
-''');
-    await assertNoAssistAt('test', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_parameter_BAD_noPropagatedType() async {
-    await resolveTestUnit('''
-foo(f(p)) {}
-main() {
-  foo((test) {});
-}
-''');
-    await assertNoAssistAt('test', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_parameter_OK() async {
-    await resolveTestUnit('''
-foo(f(int p)) {}
-main() {
-  foo((test) {});
-}
-''');
-    await assertHasAssistAt('test', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-foo(f(int p)) {}
-main() {
-  foo((int test) {});
-}
-''');
-  }
-
-  test_addTypeAnnotation_topLevelField_BAD_multiple() async {
-    await resolveTestUnit('''
-var A = 1, V = '';
-''');
-    await assertNoAssistAt('var ', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_topLevelField_BAD_noValue() async {
-    await resolveTestUnit('''
-var V;
-''');
-    await assertNoAssistAt('var ', DartAssistKind.ADD_TYPE_ANNOTATION);
-  }
-
-  test_addTypeAnnotation_topLevelField_OK_int() async {
-    await resolveTestUnit('''
-var V = 0;
-''');
-    await assertHasAssistAt('var ', DartAssistKind.ADD_TYPE_ANNOTATION, '''
-int V = 0;
-''');
-  }
-
-  test_assignToLocalVariable() async {
-    await resolveTestUnit('''
-main() {
-  List<int> bytes;
-  readBytes();
-}
-List<int> readBytes() => <int>[];
-''');
-    await assertHasAssistAt(
-        'readBytes();', DartAssistKind.ASSIGN_TO_LOCAL_VARIABLE, '''
-main() {
-  List<int> bytes;
-  var readBytes = readBytes();
-}
-List<int> readBytes() => <int>[];
-''');
-    _assertLinkedGroup(
-        change.linkedEditGroups[0],
-        ['readBytes = '],
-        expectedSuggestions(LinkedEditSuggestionKind.VARIABLE,
-            ['list', 'bytes2', 'readBytes']));
-  }
-
-  test_assignToLocalVariable_alreadyAssignment() async {
-    await resolveTestUnit('''
-main() {
-  var vvv;
-  vvv = 42;
-}
-''');
-    await assertNoAssistAt('vvv =', DartAssistKind.ASSIGN_TO_LOCAL_VARIABLE);
-  }
-
-  test_assignToLocalVariable_inClosure() async {
-    await resolveTestUnit(r'''
-main() {
-  print(() {
-    12345;
-  });
-}
-''');
-    await assertHasAssistAt('345', DartAssistKind.ASSIGN_TO_LOCAL_VARIABLE, '''
-main() {
-  print(() {
-    var i = 12345;
-  });
-}
-''');
-  }
-
-  test_assignToLocalVariable_invocationArgument() async {
-    await resolveTestUnit(r'''
-main() {
-  f(12345);
-}
-void f(p) {}
-''');
-    await assertNoAssistAt('345', DartAssistKind.ASSIGN_TO_LOCAL_VARIABLE);
-  }
-
-  test_assignToLocalVariable_throw() async {
-    await resolveTestUnit('''
-main() {
-  throw 42;
-}
-''');
-    await assertNoAssistAt('throw ', DartAssistKind.ASSIGN_TO_LOCAL_VARIABLE);
-  }
-
-  test_assignToLocalVariable_void() async {
-    await resolveTestUnit('''
-main() {
-  f();
-}
-void f() {}
-''');
-    await assertNoAssistAt('f();', DartAssistKind.ASSIGN_TO_LOCAL_VARIABLE);
-  }
-
-  test_convertClassToMixin_abstract() async {
-    await resolveTestUnit('''
-abstract class A {}
-''');
-    await assertHasAssistAt('A', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-mixin A {}
-''');
-  }
-
-  test_convertClassToMixin_extends_noSuper() async {
-    await resolveTestUnit('''
-class A {}
-class B extends A {}
-''');
-    await assertHasAssistAt('B', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {}
-mixin B implements A {}
-''');
-  }
-
-  test_convertClassToMixin_extends_super() async {
-    await resolveTestUnit('''
-class A {
-  a() {}
-}
-class B extends A {
-  b() {
-    super.a();
-  }
-}
-''');
-    await assertHasAssistAt('B', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {
-  a() {}
-}
-mixin B on A {
-  b() {
-    super.a();
-  }
-}
-''');
-  }
-
-  test_convertClassToMixin_extends_superSuper() async {
-    await resolveTestUnit('''
-class A {
-  a() {}
-}
-class B extends A {}
-class C extends B {
-  c() {
-    super.a();
-  }
-}
-''');
-    await assertHasAssistAt('C', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {
-  a() {}
-}
-class B extends A {}
-mixin C on B {
-  c() {
-    super.a();
-  }
-}
-''');
-  }
-
-  test_convertClassToMixin_extendsImplements_noSuper() async {
-    await resolveTestUnit('''
-class A {}
-class B {}
-class C extends A implements B {}
-''');
-    await assertHasAssistAt('C', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {}
-class B {}
-mixin C implements A, B {}
-''');
-  }
-
-  test_convertClassToMixin_extendsImplements_super_extends() async {
-    await resolveTestUnit('''
-class A {
-  a() {}
-}
-class B {}
-class C extends A implements B {
-  c() {
-    super.a();
-  }
-}
-''');
-    await assertHasAssistAt('C', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {
-  a() {}
-}
-class B {}
-mixin C on A implements B {
-  c() {
-    super.a();
-  }
-}
-''');
-  }
-
-  test_convertClassToMixin_extendsWith_noSuper() async {
-    await resolveTestUnit('''
-class A {}
-class B {}
-class C extends A with B {}
-''');
-    await assertHasAssistAt('C', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {}
-class B {}
-mixin C implements A, B {}
-''');
-  }
-
-  test_convertClassToMixin_extendsWith_super_both() async {
-    await resolveTestUnit('''
-class A {
-  a() {}
-}
-class B {
-  b() {}
-}
-class C extends A with B {
-  c() {
-    super.a();
-    super.b();
-  }
-}
-''');
-    await assertHasAssistAt('C', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {
-  a() {}
-}
-class B {
-  b() {}
-}
-mixin C on A, B {
-  c() {
-    super.a();
-    super.b();
-  }
-}
-''');
-  }
-
-  test_convertClassToMixin_extendsWith_super_extends() async {
-    await resolveTestUnit('''
-class A {
-  a() {}
-}
-class B {
-  b() {}
-}
-class C extends A with B {
-  c() {
-    super.a();
-  }
-}
-''');
-    await assertHasAssistAt('C', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {
-  a() {}
-}
-class B {
-  b() {}
-}
-mixin C on A implements B {
-  c() {
-    super.a();
-  }
-}
-''');
-  }
-
-  test_convertClassToMixin_extendsWith_super_with() async {
-    await resolveTestUnit('''
-class A {
-  a() {}
-}
-class B {
-  b() {}
-}
-class C extends A with B {
-  c() {
-    super.b();
-  }
-}
-''');
-    await assertHasAssistAt('C', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {
-  a() {}
-}
-class B {
-  b() {}
-}
-mixin C on B implements A {
-  c() {
-    super.b();
-  }
-}
-''');
-  }
-
-  test_convertClassToMixin_extendsWithImplements_noSuper() async {
-    await resolveTestUnit('''
-class A {}
-class B {}
-class C {}
-class D extends A with B implements C {}
-''');
-    await assertHasAssistAt('D', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {}
-class B {}
-class C {}
-mixin D implements A, B, C {}
-''');
-  }
-
-  test_convertClassToMixin_extendsWithImplements_super_both() async {
-    await resolveTestUnit('''
-class A {
-  a() {}
-}
-class B {
-  b() {}
-}
-class C {}
-class D extends A with B implements C {
-  d() {
-    super.a();
-    super.b();
-  }
-}
-''');
-    await assertHasAssistAt('D', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {
-  a() {}
-}
-class B {
-  b() {}
-}
-class C {}
-mixin D on A, B implements C {
-  d() {
-    super.a();
-    super.b();
-  }
-}
-''');
-  }
-
-  test_convertClassToMixin_extendsWithImplements_super_extends() async {
-    await resolveTestUnit('''
-class A {
-  a() {}
-}
-class B {
-  b() {}
-}
-class C {}
-class D extends A with B implements C {
-  d() {
-    super.a();
-  }
-}
-''');
-    await assertHasAssistAt('D', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {
-  a() {}
-}
-class B {
-  b() {}
-}
-class C {}
-mixin D on A implements B, C {
-  d() {
-    super.a();
-  }
-}
-''');
-  }
-
-  test_convertClassToMixin_extendsWithImplements_super_with() async {
-    await resolveTestUnit('''
-class A {
-  a() {}
-}
-class B {
-  b() {}
-}
-class C {}
-class D extends A with B implements C {
-  d() {
-    super.b();
-  }
-}
-''');
-    await assertHasAssistAt('D', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {
-  a() {}
-}
-class B {
-  b() {}
-}
-class C {}
-mixin D on B implements A, C {
-  d() {
-    super.b();
-  }
-}
-''');
-  }
-
-  test_convertClassToMixin_implements() async {
-    await resolveTestUnit('''
-class A {}
-class B implements A {}
-''');
-    await assertHasAssistAt('B', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {}
-mixin B implements A {}
-''');
-  }
-
-  test_convertClassToMixin_noClauses_invalidSelection() async {
-    await resolveTestUnit('''
-class A {}
-''');
-    await assertNoAssistAt(
-      '{}',
-      DartAssistKind.CONVERT_CLASS_TO_MIXIN,
-    );
-  }
-
-  test_convertClassToMixin_noClauses_selectKeyword() async {
-    await resolveTestUnit('''
-class A {}
-''');
-    await assertHasAssistAt('class', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-mixin A {}
-''');
-  }
-
-  test_convertClassToMixin_noClauses_selectName() async {
-    await resolveTestUnit('''
-class A {}
-''');
-    await assertHasAssistAt('A', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-mixin A {}
-''');
-  }
-
-  test_convertClassToMixin_with_noSuper() async {
-    await resolveTestUnit('''
-class A {}
-class B with A {}
-''');
-    await assertHasAssistAt('B', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {}
-mixin B implements A {}
-''');
-  }
-
-  test_convertClassToMixin_with_super() async {
-    await resolveTestUnit('''
-class A {
-  a() {}
-}
-class B with A {
-  b() {
-    super.a();
-  }
-}
-''');
-    await assertHasAssistAt('B', DartAssistKind.CONVERT_CLASS_TO_MIXIN, '''
-class A {
-  a() {}
-}
-mixin B on A {
-  b() {
-    super.a();
-  }
-}
-''');
-  }
-
-  test_convertDocumentationIntoBlock_BAD_alreadyBlock() async {
-    await resolveTestUnit('''
-/**
- * AAAAAAA
- */
-class A {}
-''');
-    await assertNoAssistAt(
-        'AAA', DartAssistKind.CONVERT_DOCUMENTATION_INTO_BLOCK);
-  }
-
-  test_convertDocumentationIntoBlock_BAD_notDocumentation() async {
-    await resolveTestUnit('''
-// AAAA
-class A {}
-''');
-    await assertNoAssistAt(
-        'AAA', DartAssistKind.CONVERT_DOCUMENTATION_INTO_BLOCK);
-  }
-
-  test_convertDocumentationIntoBlock_OK_noSpaceBeforeText() async {
-    await resolveTestUnit('''
-class A {
-  /// AAAAA
-  ///BBBBB
-  ///
-  /// CCCCC
-  mmm() {}
-}
-''');
-    await assertHasAssistAt(
-        'AAAAA', DartAssistKind.CONVERT_DOCUMENTATION_INTO_BLOCK, '''
-class A {
-  /**
-   * AAAAA
-   *BBBBB
-   *
-   * CCCCC
-   */
-  mmm() {}
-}
-''');
-  }
-
-  test_convertDocumentationIntoBlock_OK_onReference() async {
-    await resolveTestUnit('''
-/// AAAAAAA [int] AAAAAAA
-class A {}
-''');
-    await assertHasAssistAt(
-        'nt]', DartAssistKind.CONVERT_DOCUMENTATION_INTO_BLOCK, '''
-/**
- * AAAAAAA [int] AAAAAAA
- */
-class A {}
-''');
-  }
-
-  test_convertDocumentationIntoBlock_OK_onText() async {
-    await resolveTestUnit('''
-class A {
-  /// AAAAAAA [int] AAAAAAA
-  /// BBBBBBBB BBBB BBBB
-  /// CCC [A] CCCCCCCCCCC
-  mmm() {}
-}
-''');
-    await assertHasAssistAt(
-        'AAA [', DartAssistKind.CONVERT_DOCUMENTATION_INTO_BLOCK, '''
-class A {
-  /**
-   * AAAAAAA [int] AAAAAAA
-   * BBBBBBBB BBBB BBBB
-   * CCC [A] CCCCCCCCCCC
-   */
-  mmm() {}
-}
-''');
-  }
-
-  test_convertDocumentationIntoLine_BAD_alreadyLine() async {
-    await resolveTestUnit('''
-/// AAAAAAA
-class A {}
-''');
-    await assertNoAssistAt(
-        'AAA', DartAssistKind.CONVERT_DOCUMENTATION_INTO_LINE);
-  }
-
-  test_convertDocumentationIntoLine_BAD_notDocumentation() async {
-    await resolveTestUnit('''
-/* AAAA */
-class A {}
-''');
-    await assertNoAssistAt(
-        'AAA', DartAssistKind.CONVERT_DOCUMENTATION_INTO_LINE);
-  }
-
-  test_convertDocumentationIntoLine_OK_onReference() async {
-    await resolveTestUnit('''
-/**
- * AAAAAAA [int] AAAAAAA
- */
-class A {}
-''');
-    await assertHasAssistAt(
-        'nt]', DartAssistKind.CONVERT_DOCUMENTATION_INTO_LINE, '''
-/// AAAAAAA [int] AAAAAAA
-class A {}
-''');
-  }
-
-  test_convertDocumentationIntoLine_OK_onText() async {
-    await resolveTestUnit('''
-class A {
-  /**
-   * AAAAAAA [int] AAAAAAA
-   * BBBBBBBB BBBB BBBB
-   * CCC [A] CCCCCCCCCCC
-   */
-  mmm() {}
-}
-''');
-    await assertHasAssistAt(
-        'AAA [', DartAssistKind.CONVERT_DOCUMENTATION_INTO_LINE, '''
-class A {
-  /// AAAAAAA [int] AAAAAAA
-  /// BBBBBBBB BBBB BBBB
-  /// CCC [A] CCCCCCCCCCC
-  mmm() {}
-}
-''');
-  }
-
-  test_convertDocumentationIntoLine_OK_onText_hasFirstLine() async {
-    await resolveTestUnit('''
-class A {
-  /** AAAAAAA [int] AAAAAAA
-   * BBBBBBBB BBBB BBBB
-   * CCC [A] CCCCCCCCCCC
-   */
-  mmm() {}
-}
-''');
-    await assertHasAssistAt(
-        'AAA [', DartAssistKind.CONVERT_DOCUMENTATION_INTO_LINE, '''
-class A {
-  /// AAAAAAA [int] AAAAAAA
-  /// BBBBBBBB BBBB BBBB
-  /// CCC [A] CCCCCCCCCCC
-  mmm() {}
-}
-''');
-  }
-
-  test_convertPartOfToUri_file_nonSibling() async {
-    addSource('/pkg/lib/foo.dart', '''
-library foo;
-part 'src/bar.dart';
-''');
-    testFile = resourceProvider.convertPath('/pkg/lib/src/bar.dart');
-    await resolveTestUnit('''
-part of foo;
-''');
-    await assertHasAssistAt('foo', DartAssistKind.CONVERT_PART_OF_TO_URI, '''
-part of '../foo.dart';
-''');
-  }
-
-  test_convertPartOfToUri_file_sibling() async {
-    addSource('/pkg/foo.dart', '''
-library foo;
-part 'bar.dart';
-''');
-    testFile = resourceProvider.convertPath('/pkg/bar.dart');
-    await resolveTestUnit('''
-part of foo;
-''');
-    await assertHasAssistAt('foo', DartAssistKind.CONVERT_PART_OF_TO_URI, '''
-part of 'foo.dart';
-''');
-  }
-
-  test_convertToAsyncBody_BAD_async() async {
-    await resolveTestUnit('''
-import 'dart:async';
-Future<String> f() async => '';
-''');
-    await assertNoAssistAt('=>', DartAssistKind.CONVERT_INTO_ASYNC_BODY);
-  }
-
-  test_convertToAsyncBody_BAD_asyncStar() async {
-    await resolveTestUnit('''
-import 'dart:async';
-Stream<String> f() async* {}
-''');
-    await assertNoAssistAt('{}', DartAssistKind.CONVERT_INTO_ASYNC_BODY);
-  }
-
-  test_convertToAsyncBody_BAD_constructor() async {
-    await resolveTestUnit('''
-class C {
-  C() {}
-}
-''');
-    await assertNoAssistAt('{}', DartAssistKind.CONVERT_INTO_ASYNC_BODY);
-  }
-
-  test_convertToAsyncBody_BAD_inBody_block() async {
-    await resolveTestUnit('''
-class C {
-  void foo() {
-    print(42);
-  }
-}
-''');
-    await assertNoAssistAt('print', DartAssistKind.CONVERT_INTO_ASYNC_BODY);
-  }
-
-  test_convertToAsyncBody_BAD_inBody_expression() async {
-    await resolveTestUnit('''
-class C {
-  void foo() => print(42);
-}
-''');
-    await assertNoAssistAt('print', DartAssistKind.CONVERT_INTO_ASYNC_BODY);
-  }
-
-  test_convertToAsyncBody_BAD_syncStar() async {
-    await resolveTestUnit('''
-Iterable<String> f() sync* {}
-''');
-    await assertNoAssistAt('{}', DartAssistKind.CONVERT_INTO_ASYNC_BODY);
-  }
-
-  test_convertToAsyncBody_OK_closure() async {
-    await resolveTestUnit('''
-main() {
-  f(() => 123);
-}
-f(g) {}
-''');
-    await assertHasAssistAt('=>', DartAssistKind.CONVERT_INTO_ASYNC_BODY, '''
-main() {
-  f(() async => 123);
-}
-f(g) {}
-''');
-  }
-
-  test_convertToAsyncBody_OK_function() async {
-    // TODO(brianwilkerson) Remove the "class C {}" when the bug in the builder
-    // is fixed that causes the import to be incorrectly inserted when the first
-    // character in the file is also being modified.
-    await resolveTestUnit('''
-class C {}
-String f() => '';
-''');
-    await assertHasAssistAt('=>', DartAssistKind.CONVERT_INTO_ASYNC_BODY, '''
-import 'dart:async';
-
-class C {}
-Future<String> f() async => '';
-''');
-  }
-
-  test_convertToAsyncBody_OK_getter_expression_noSpace() async {
-    await resolveTestUnit('''
-class C {
-  int get g=>0;
-}
-''');
-    await assertHasAssistAt('get g', DartAssistKind.CONVERT_INTO_ASYNC_BODY, '''
-import 'dart:async';
-
-class C {
-  Future<int> get g async =>0;
-}
-''');
-  }
-
-  test_convertToAsyncBody_OK_method() async {
-    await resolveTestUnit('''
-class C {
-  int m() { return 0; }
-}
-''');
-    await assertHasAssistAt(
-        '{ return', DartAssistKind.CONVERT_INTO_ASYNC_BODY, '''
-import 'dart:async';
-
-class C {
-  Future<int> m() async { return 0; }
-}
-''');
-  }
-
-  test_convertToAsyncBody_OK_method_abstract() async {
-    await resolveTestUnit('''
-abstract class C {
-  int m();
-}
-''');
-    await assertHasAssistAt('m()', DartAssistKind.CONVERT_INTO_ASYNC_BODY, '''
-import 'dart:async';
-
-abstract class C {
-  Future<int> m();
-}
-''');
-  }
-
-  test_convertToAsyncBody_OK_method_noReturnType() async {
-    await resolveTestUnit('''
-class C {
-  m() { return 0; }
-}
-''');
-    await assertHasAssistAt(
-        '{ return', DartAssistKind.CONVERT_INTO_ASYNC_BODY, '''
-class C {
-  m() async { return 0; }
-}
-''');
-  }
-
-  test_convertToBlockBody_BAD_inExpression() async {
-    await resolveTestUnit('''
-main() => 123;
-''');
-    await assertNoAssistAt('123;', DartAssistKind.CONVERT_INTO_BLOCK_BODY);
-  }
-
-  test_convertToBlockBody_BAD_noEnclosingFunction() async {
-    await resolveTestUnit('''
-var v = 123;
-''');
-    await assertNoAssistAt('v =', DartAssistKind.CONVERT_INTO_BLOCK_BODY);
-  }
-
-  test_convertToBlockBody_BAD_notExpressionBlock() async {
-    await resolveTestUnit('''
-fff() {
-  return 123;
-}
-''');
-    await assertNoAssistAt('fff() {', DartAssistKind.CONVERT_INTO_BLOCK_BODY);
-  }
-
-  test_convertToBlockBody_OK_async() async {
-    await resolveTestUnit('''
-class A {
-  mmm() async => 123;
-}
-''');
-    await assertHasAssistAt('mmm()', DartAssistKind.CONVERT_INTO_BLOCK_BODY, '''
-class A {
-  mmm() async {
-    return 123;
-  }
-}
-''');
-  }
-
-  test_convertToBlockBody_OK_closure() async {
-    await resolveTestUnit('''
-setup(x) {}
-main() {
-  setup(() => 42);
-}
-''');
-    await assertHasAssistAt(
-        '() => 42', DartAssistKind.CONVERT_INTO_BLOCK_BODY, '''
-setup(x) {}
-main() {
-  setup(() {
-    return 42;
-  });
-}
-''');
-    {
-      Position exitPos = change.selection;
-      expect(exitPos, isNotNull);
-      expect(exitPos.file, testFile);
-      expect(exitPos.offset - 3, resultCode.indexOf('42;'));
-    }
-  }
-
-  test_convertToBlockBody_OK_closure_voidExpression() async {
-    await resolveTestUnit('''
-setup(x) {}
-main() {
-  setup(() => print('done'));
-}
-''');
-    await assertHasAssistAt(
-        '() => print', DartAssistKind.CONVERT_INTO_BLOCK_BODY, '''
-setup(x) {}
-main() {
-  setup(() {
-    print('done');
-  });
-}
-''');
-    {
-      Position exitPos = change.selection;
-      expect(exitPos, isNotNull);
-      expect(exitPos.file, testFile);
-      expect(exitPos.offset - 3, resultCode.indexOf("');"));
-    }
-  }
-
-  test_convertToBlockBody_OK_constructor() async {
-    await resolveTestUnit('''
-class A {
-  factory A() => null;
-}
-''');
-    await assertHasAssistAt('A()', DartAssistKind.CONVERT_INTO_BLOCK_BODY, '''
-class A {
-  factory A() {
-    return null;
-  }
-}
-''');
-  }
-
-  test_convertToBlockBody_OK_method() async {
-    await resolveTestUnit('''
-class A {
-  mmm() => 123;
-}
-''');
-    await assertHasAssistAt('mmm()', DartAssistKind.CONVERT_INTO_BLOCK_BODY, '''
-class A {
-  mmm() {
-    return 123;
-  }
-}
-''');
-  }
-
-  test_convertToBlockBody_OK_onArrow() async {
-    await resolveTestUnit('''
-fff() => 123;
-''');
-    await assertHasAssistAt('=>', DartAssistKind.CONVERT_INTO_BLOCK_BODY, '''
-fff() {
-  return 123;
-}
-''');
-  }
-
-  test_convertToBlockBody_OK_onName() async {
-    await resolveTestUnit('''
-fff() => 123;
-''');
-    await assertHasAssistAt('fff()', DartAssistKind.CONVERT_INTO_BLOCK_BODY, '''
-fff() {
-  return 123;
-}
-''');
-  }
-
-  test_convertToBlockBody_OK_throw() async {
-    await resolveTestUnit('''
-class A {
-  mmm() => throw 'error';
-}
-''');
-    await assertHasAssistAt('mmm()', DartAssistKind.CONVERT_INTO_BLOCK_BODY, '''
-class A {
-  mmm() {
-    throw 'error';
-  }
-}
-''');
-  }
-
-  test_convertToDoubleQuotedString_BAD_one_embeddedTarget() async {
-    await resolveTestUnit('''
-main() {
-  print('a"b"c');
-}
-''');
-    await assertNoAssistAt(
-        "'a", DartAssistKind.CONVERT_TO_DOUBLE_QUOTED_STRING);
-  }
-
-  test_convertToDoubleQuotedString_BAD_one_enclosingTarget() async {
-    await resolveTestUnit('''
-main() {
-  print("abc");
-}
-''');
-    await assertNoAssistAt(
-        '"ab', DartAssistKind.CONVERT_TO_DOUBLE_QUOTED_STRING);
-  }
-
-  test_convertToDoubleQuotedString_BAD_three_embeddedTarget() async {
-    await resolveTestUnit("""
-main() {
-  print('''a""\"c''');
-}
-""");
-    await assertNoAssistAt(
-        "'a", DartAssistKind.CONVERT_TO_DOUBLE_QUOTED_STRING);
-  }
-
-  test_convertToDoubleQuotedString_BAD_three_enclosingTarget() async {
-    await resolveTestUnit('''
-main() {
-  print("""abc""");
-}
-''');
-    await assertNoAssistAt(
-        '"ab', DartAssistKind.CONVERT_TO_DOUBLE_QUOTED_STRING);
-  }
-
-  test_convertToDoubleQuotedString_OK_one_interpolation() async {
-    await resolveTestUnit(r'''
-main() {
-  var b = 'b';
-  var c = 'c';
-  print('a $b-${c} d');
-}
-''');
-    await assertHasAssistAt(
-        r"'a $b", DartAssistKind.CONVERT_TO_DOUBLE_QUOTED_STRING, r'''
-main() {
-  var b = 'b';
-  var c = 'c';
-  print("a $b-${c} d");
-}
-''');
-  }
-
-  test_convertToDoubleQuotedString_OK_one_raw() async {
-    await resolveTestUnit('''
-main() {
-  print(r'abc');
-}
-''');
-    await assertHasAssistAt(
-        "'ab", DartAssistKind.CONVERT_TO_DOUBLE_QUOTED_STRING, '''
-main() {
-  print(r"abc");
-}
-''');
-  }
-
-  test_convertToDoubleQuotedString_OK_one_simple() async {
-    await resolveTestUnit('''
-main() {
-  print('abc');
-}
-''');
-    await assertHasAssistAt(
-        "'ab", DartAssistKind.CONVERT_TO_DOUBLE_QUOTED_STRING, '''
-main() {
-  print("abc");
-}
-''');
-  }
-
-  test_convertToDoubleQuotedString_OK_three_interpolation() async {
-    await resolveTestUnit(r"""
-main() {
-  var b = 'b';
-  var c = 'c';
-  print('''a $b-${c} d''');
-}
-""");
-    await assertHasAssistAt(
-        r"'a $b", DartAssistKind.CONVERT_TO_DOUBLE_QUOTED_STRING, r'''
-main() {
-  var b = 'b';
-  var c = 'c';
-  print("""a $b-${c} d""");
-}
-''');
-  }
-
-  test_convertToDoubleQuotedString_OK_three_raw() async {
-    await resolveTestUnit("""
-main() {
-  print(r'''abc''');
-}
-""");
-    await assertHasAssistAt(
-        "'ab", DartAssistKind.CONVERT_TO_DOUBLE_QUOTED_STRING, '''
-main() {
-  print(r"""abc""");
-}
-''');
-  }
-
-  test_convertToDoubleQuotedString_OK_three_simple() async {
-    await resolveTestUnit("""
-main() {
-  print('''abc''');
-}
-""");
-    await assertHasAssistAt(
-        "'ab", DartAssistKind.CONVERT_TO_DOUBLE_QUOTED_STRING, '''
-main() {
-  print("""abc""");
-}
-''');
-  }
-
-  test_convertToExpressionBody_BAD_already() async {
-    await resolveTestUnit('''
-fff() => 42;
-''');
-    await assertNoAssistAt(
-        'fff()', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY);
-  }
-
-  test_convertToExpressionBody_BAD_inExpression() async {
-    await resolveTestUnit('''
-main() {
-  return 42;
-}
-''');
-    await assertNoAssistAt('42;', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY);
-  }
-
-  test_convertToExpressionBody_BAD_moreThanOneStatement() async {
-    await resolveTestUnit('''
-fff() {
-  var v = 42;
-  return v;
-}
-''');
-    await assertNoAssistAt(
-        'fff()', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY);
-  }
-
-  test_convertToExpressionBody_BAD_noEnclosingFunction() async {
-    await resolveTestUnit('''
-var V = 42;
-''');
-    await assertNoAssistAt('V = ', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY);
-  }
-
-  test_convertToExpressionBody_BAD_noReturn() async {
-    await resolveTestUnit('''
-fff() {
-  var v = 42;
-}
-''');
-    await assertNoAssistAt(
-        'fff()', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY);
-  }
-
-  test_convertToExpressionBody_BAD_noReturnValue() async {
-    await resolveTestUnit('''
-fff() {
-  return;
-}
-''');
-    await assertNoAssistAt(
-        'fff()', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY);
-  }
-
-  test_convertToExpressionBody_OK_async() async {
-    await resolveTestUnit('''
-class A {
-  mmm() async {
-    return 42;
-  }
-}
-''');
-    await assertHasAssistAt(
-        'mmm', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY, '''
-class A {
-  mmm() async => 42;
-}
-''');
-  }
-
-  test_convertToExpressionBody_OK_closure() async {
-    await resolveTestUnit('''
-setup(x) {}
-main() {
-  setup(() {
-    return 42;
-  });
-}
-''');
-    await assertHasAssistAt(
-        'return', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY, '''
-setup(x) {}
-main() {
-  setup(() => 42);
-}
-''');
-  }
-
-  test_convertToExpressionBody_OK_closure_voidExpression() async {
-    await resolveTestUnit('''
-setup(x) {}
-main() {
-  setup((_) {
-    print('test');
-  });
-}
-''');
-    await assertHasAssistAt(
-        '(_) {', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY, '''
-setup(x) {}
-main() {
-  setup((_) => print('test'));
-}
-''');
-  }
-
-  test_convertToExpressionBody_OK_constructor() async {
-    await resolveTestUnit('''
-class A {
-  factory A() {
-    return null;
-  }
-}
-''');
-    await assertHasAssistAt(
-        'A()', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY, '''
-class A {
-  factory A() => null;
-}
-''');
-  }
-
-  test_convertToExpressionBody_OK_function_onBlock() async {
-    await resolveTestUnit('''
-fff() {
-  return 42;
-}
-''');
-    await assertHasAssistAt(
-        '{', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY, '''
-fff() => 42;
-''');
-  }
-
-  test_convertToExpressionBody_OK_function_onName() async {
-    await resolveTestUnit('''
-fff() {
-  return 42;
-}
-''');
-    await assertHasAssistAt(
-        'ff()', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY, '''
-fff() => 42;
-''');
-  }
-
-  test_convertToExpressionBody_OK_method_onBlock() async {
-    await resolveTestUnit('''
-class A {
-  m() { // marker
-    return 42;
-  }
-}
-''');
-    await assertHasAssistAt(
-        '{ // marker', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY, '''
-class A {
-  m() => 42;
-}
-''');
-  }
-
-  test_convertToExpressionBody_OK_topFunction_onReturnStatement() async {
-    await resolveTestUnit('''
-fff() {
-  return 42;
-}
-''');
-    await assertHasAssistAt(
-        'return', DartAssistKind.CONVERT_INTO_EXPRESSION_BODY, '''
-fff() => 42;
-''');
-  }
-
-  test_convertToFieldParameter_BAD_additionalUse() async {
-    await resolveTestUnit('''
-class A {
-  int aaa2;
-  int bbb2;
-  A(int aaa) : aaa2 = aaa, bbb2 = aaa;
-}
-''');
-    await assertNoAssistAt('aaa)', DartAssistKind.CONVERT_TO_FIELD_PARAMETER);
-  }
-
-  test_convertToFieldParameter_BAD_notPureAssignment() async {
-    await resolveTestUnit('''
-class A {
-  int aaa2;
-  A(int aaa) : aaa2 = aaa * 2;
-}
-''');
-    await assertNoAssistAt('aaa)', DartAssistKind.CONVERT_TO_FIELD_PARAMETER);
-  }
-
-  test_convertToFieldParameter_OK_firstInitializer() async {
-    await resolveTestUnit('''
-class A {
-  int aaa2;
-  int bbb2;
-  A(int aaa, int bbb) : aaa2 = aaa, bbb2 = bbb;
-}
-''');
-    await assertHasAssistAt(
-        'aaa, ', DartAssistKind.CONVERT_TO_FIELD_PARAMETER, '''
-class A {
-  int aaa2;
-  int bbb2;
-  A(this.aaa2, int bbb) : bbb2 = bbb;
-}
-''');
-  }
-
-  test_convertToFieldParameter_OK_onParameterName_inInitializer() async {
-    await resolveTestUnit('''
-class A {
-  int test2;
-  A(int test) : test2 = test {
-  }
-}
-''');
-    await assertHasAssistAt(
-        'test {', DartAssistKind.CONVERT_TO_FIELD_PARAMETER, '''
-class A {
-  int test2;
-  A(this.test2) {
-  }
-}
-''');
-  }
-
-  test_convertToFieldParameter_OK_onParameterName_inParameters() async {
-    await resolveTestUnit('''
-class A {
-  int test;
-  A(int test) : test = test {
-  }
-}
-''');
-    await assertHasAssistAt(
-        'test)', DartAssistKind.CONVERT_TO_FIELD_PARAMETER, '''
-class A {
-  int test;
-  A(this.test) {
-  }
-}
-''');
-  }
-
-  test_convertToFieldParameter_OK_secondInitializer() async {
-    await resolveTestUnit('''
-class A {
-  int aaa2;
-  int bbb2;
-  A(int aaa, int bbb) : aaa2 = aaa, bbb2 = bbb;
-}
-''');
-    await assertHasAssistAt(
-        'bbb)', DartAssistKind.CONVERT_TO_FIELD_PARAMETER, '''
-class A {
-  int aaa2;
-  int bbb2;
-  A(int aaa, this.bbb2) : aaa2 = aaa;
-}
-''');
-  }
-
-  test_convertToFinalField_BAD_hasSetter_inThisClass() async {
-    await resolveTestUnit('''
-class A {
-  int get foo => null;
-  void set foo(_) {}
-}
-''');
-    await assertNoAssistAt('get foo', DartAssistKind.CONVERT_INTO_FINAL_FIELD);
-  }
-
-  test_convertToFinalField_BAD_notExpressionBody() async {
-    await resolveTestUnit('''
-class A {
-  int get foo {
-    int v = 1 + 2;
-    return v + 3;
-  }
-}
-''');
-    await assertNoAssistAt('get foo', DartAssistKind.CONVERT_INTO_FINAL_FIELD);
-  }
-
-  test_convertToFinalField_BAD_notGetter() async {
-    await resolveTestUnit('''
-class A {
-  int foo() => 42;
-}
-''');
-    await assertNoAssistAt('foo', DartAssistKind.CONVERT_INTO_FINAL_FIELD);
-  }
-
-  test_convertToFinalField_OK_blockBody_onlyReturnStatement() async {
-    await resolveTestUnit('''
-class A {
-  int get foo {
-    return 1 + 2;
-  }
-}
-''');
-    await assertHasAssistAt(
-        'get foo', DartAssistKind.CONVERT_INTO_FINAL_FIELD, '''
-class A {
-  final int foo = 1 + 2;
-}
-''');
-  }
-
-  test_convertToFinalField_OK_hasOverride() async {
-    await resolveTestUnit('''
-const myAnnotation = const Object();
-class A {
-  @myAnnotation
-  int get foo => 42;
-}
-''');
-    await assertHasAssistAt(
-        'get foo', DartAssistKind.CONVERT_INTO_FINAL_FIELD, '''
-const myAnnotation = const Object();
-class A {
-  @myAnnotation
-  final int foo = 42;
-}
-''');
-  }
-
-  test_convertToFinalField_OK_hasSetter_inSuper() async {
-    await resolveTestUnit('''
-class A {
-  void set foo(_) {}
-}
-class B extends A {
-  int get foo => null;
-}
-''');
-    await assertHasAssistAt(
-        'get foo', DartAssistKind.CONVERT_INTO_FINAL_FIELD, '''
-class A {
-  void set foo(_) {}
-}
-class B extends A {
-  final int foo;
-}
-''');
-  }
-
-  test_convertToFinalField_OK_noReturnType() async {
-    await resolveTestUnit('''
-class A {
-  get foo => 42;
-}
-''');
-    await assertHasAssistAt(
-        'get foo', DartAssistKind.CONVERT_INTO_FINAL_FIELD, '''
-class A {
-  final foo = 42;
-}
-''');
-  }
-
-  test_convertToFinalField_OK_noReturnType_static() async {
-    await resolveTestUnit('''
-class A {
-  static get foo => 42;
-}
-''');
-    await assertHasAssistAt(
-        'get foo', DartAssistKind.CONVERT_INTO_FINAL_FIELD, '''
-class A {
-  static final foo = 42;
-}
-''');
-  }
-
-  test_convertToFinalField_OK_notNull() async {
-    await resolveTestUnit('''
-class A {
-  int get foo => 1 + 2;
-}
-''');
-    await assertHasAssistAt(
-        'get foo', DartAssistKind.CONVERT_INTO_FINAL_FIELD, '''
-class A {
-  final int foo = 1 + 2;
-}
-''');
-  }
-
-  test_convertToFinalField_OK_null() async {
-    await resolveTestUnit('''
-class A {
-  int get foo => null;
-}
-''');
-    await assertHasAssistAt(
-        'get foo', DartAssistKind.CONVERT_INTO_FINAL_FIELD, '''
-class A {
-  final int foo;
-}
-''');
-  }
-
-  test_convertToFinalField_OK_onName() async {
-    await resolveTestUnit('''
-class A {
-  int get foo => 42;
-}
-''');
-    await assertHasAssistAt('foo', DartAssistKind.CONVERT_INTO_FINAL_FIELD, '''
-class A {
-  final int foo = 42;
-}
-''');
-  }
-
-  test_convertToFinalField_OK_onReturnType_parameterized() async {
-    await resolveTestUnit('''
-class A {
-  List<int> get foo => null;
-}
-''');
-    await assertHasAssistAt(
-        'nt> get', DartAssistKind.CONVERT_INTO_FINAL_FIELD, '''
-class A {
-  final List<int> foo;
-}
-''');
-  }
-
-  test_convertToFinalField_OK_onReturnType_simple() async {
-    await resolveTestUnit('''
-class A {
-  int get foo => 42;
-}
-''');
-    await assertHasAssistAt(
-        'int get', DartAssistKind.CONVERT_INTO_FINAL_FIELD, '''
-class A {
-  final int foo = 42;
-}
-''');
-  }
-
-  test_convertToForIndex_BAD_bodyNotBlock() async {
-    await resolveTestUnit('''
-main(List<String> items) {
-  for (String item in items) print(item);
-}
-''');
-    await assertNoAssistAt(
-        'for (String', DartAssistKind.CONVERT_INTO_FOR_INDEX);
-  }
-
-  test_convertToForIndex_BAD_doesNotDeclareVariable() async {
-    await resolveTestUnit('''
-main(List<String> items) {
-  String item;
-  for (item in items) {
-    print(item);
-  }
-}
-''');
-    await assertNoAssistAt('for (item', DartAssistKind.CONVERT_INTO_FOR_INDEX);
-  }
-
-  test_convertToForIndex_BAD_iterableIsNotVariable() async {
-    await resolveTestUnit('''
-main() {
-  for (String item in ['a', 'b', 'c']) {
-    print(item);
-  }
-}
-''');
-    await assertNoAssistAt(
-        'for (String', DartAssistKind.CONVERT_INTO_FOR_INDEX);
-  }
-
-  test_convertToForIndex_BAD_iterableNotList() async {
-    await resolveTestUnit('''
-main(Iterable<String> items) {
-  for (String item in items) {
-    print(item);
-  }
-}
-''');
-    await assertNoAssistAt(
-        'for (String', DartAssistKind.CONVERT_INTO_FOR_INDEX);
-  }
-
-  test_convertToForIndex_BAD_usesIJK() async {
-    await resolveTestUnit('''
-main(List<String> items) {
-  for (String item in items) {
-    print(item);
-    int i, j, k;
-  }
-}
-''');
-    await assertNoAssistAt(
-        'for (String', DartAssistKind.CONVERT_INTO_FOR_INDEX);
-  }
-
-  test_convertToForIndex_OK_onDeclaredIdentifier_name() async {
-    await resolveTestUnit('''
-main(List<String> items) {
-  for (String item in items) {
-    print(item);
-  }
-}
-''');
-    await assertHasAssistAt(
-        'item in', DartAssistKind.CONVERT_INTO_FOR_INDEX, '''
-main(List<String> items) {
-  for (int i = 0; i < items.length; i++) {
-    String item = items[i];
-    print(item);
-  }
-}
-''');
-  }
-
-  test_convertToForIndex_OK_onDeclaredIdentifier_type() async {
-    await resolveTestUnit('''
-main(List<String> items) {
-  for (String item in items) {
-    print(item);
-  }
-}
-''');
-    await assertHasAssistAt(
-        'tring item', DartAssistKind.CONVERT_INTO_FOR_INDEX, '''
-main(List<String> items) {
-  for (int i = 0; i < items.length; i++) {
-    String item = items[i];
-    print(item);
-  }
-}
-''');
-  }
-
-  test_convertToForIndex_OK_onFor() async {
-    await resolveTestUnit('''
-main(List<String> items) {
-  for (String item in items) {
-    print(item);
-  }
-}
-''');
-    await assertHasAssistAt(
-        'for (String', DartAssistKind.CONVERT_INTO_FOR_INDEX, '''
-main(List<String> items) {
-  for (int i = 0; i < items.length; i++) {
-    String item = items[i];
-    print(item);
-  }
-}
-''');
-  }
-
-  test_convertToForIndex_OK_usesI() async {
-    await resolveTestUnit('''
-main(List<String> items) {
-  for (String item in items) {
-    int i = 0;
-  }
-}
-''');
-    await assertHasAssistAt(
-        'for (String', DartAssistKind.CONVERT_INTO_FOR_INDEX, '''
-main(List<String> items) {
-  for (int j = 0; j < items.length; j++) {
-    String item = items[j];
-    int i = 0;
-  }
-}
-''');
-  }
-
-  test_convertToForIndex_OK_usesIJ() async {
-    await resolveTestUnit('''
-main(List<String> items) {
-  for (String item in items) {
-    print(item);
-    int i = 0, j = 1;
-  }
-}
-''');
-    await assertHasAssistAt(
-        'for (String', DartAssistKind.CONVERT_INTO_FOR_INDEX, '''
-main(List<String> items) {
-  for (int k = 0; k < items.length; k++) {
-    String item = items[k];
-    print(item);
-    int i = 0, j = 1;
-  }
-}
-''');
-  }
-
-  test_convertToFunctionSyntax_BAD_functionTypeAlias_insideParameterList() async {
-    await resolveTestUnit('''
-typedef String F(int x, int y);
-''');
-    await assertNoAssistAt(
-        'x,', DartAssistKind.CONVERT_INTO_GENERIC_FUNCTION_SYNTAX);
-  }
-
-  test_convertToFunctionSyntax_BAD_functionTypeAlias_noParameterTypes() async {
-    await resolveTestUnit('''
-typedef String F(x);
-''');
-    await assertNoAssistAt(
-        'def', DartAssistKind.CONVERT_INTO_GENERIC_FUNCTION_SYNTAX);
-  }
-
-  test_convertToFunctionSyntax_BAD_functionTypedParameter_insideParameterList() async {
-    await resolveTestUnit('''
-g(String f(int x, int y)) {}
-''');
-    await assertNoAssistAt(
-        'x,', DartAssistKind.CONVERT_INTO_GENERIC_FUNCTION_SYNTAX);
-  }
-
-  test_convertToFunctionSyntax_BAD_functionTypedParameter_noParameterTypes() async {
-    await resolveTestUnit('''
-g(String f(x)) {}
-''');
-    await assertNoAssistAt(
-        'f(', DartAssistKind.CONVERT_INTO_GENERIC_FUNCTION_SYNTAX);
-  }
-
-  test_convertToFunctionSyntax_OK_functionTypeAlias_noReturnType_noTypeParameters() async {
-    await resolveTestUnit('''
-typedef String F(int x);
-''');
-    await assertHasAssistAt(
-        'def', DartAssistKind.CONVERT_INTO_GENERIC_FUNCTION_SYNTAX, '''
-typedef F = String Function(int x);
-''');
-  }
-
-  test_convertToFunctionSyntax_OK_functionTypeAlias_noReturnType_typeParameters() async {
-    await resolveTestUnit('''
-typedef F<P, R>(P x);
-''');
-    await assertHasAssistAt(
-        'def', DartAssistKind.CONVERT_INTO_GENERIC_FUNCTION_SYNTAX, '''
-typedef F<P, R> = Function(P x);
-''');
-  }
-
-  test_convertToFunctionSyntax_OK_functionTypeAlias_returnType_noTypeParameters() async {
-    await resolveTestUnit('''
-typedef String F(int x);
-''');
-    await assertHasAssistAt(
-        'def', DartAssistKind.CONVERT_INTO_GENERIC_FUNCTION_SYNTAX, '''
-typedef F = String Function(int x);
-''');
-  }
-
-  test_convertToFunctionSyntax_OK_functionTypeAlias_returnType_typeParameters() async {
-    await resolveTestUnit('''
-typedef R F<P, R>(P x);
-''');
-    await assertHasAssistAt(
-        'def', DartAssistKind.CONVERT_INTO_GENERIC_FUNCTION_SYNTAX, '''
-typedef F<P, R> = R Function(P x);
-''');
-  }
-
-  test_convertToFunctionSyntax_OK_functionTypedParameter_noReturnType_noTypeParameters() async {
-    await resolveTestUnit('''
-g(f(int x)) {}
-''');
-    await assertHasAssistAt(
-        'f(', DartAssistKind.CONVERT_INTO_GENERIC_FUNCTION_SYNTAX, '''
-g(Function(int x) f) {}
-''');
-  }
-
-  test_convertToFunctionSyntax_OK_functionTypedParameter_returnType() async {
-    await resolveTestUnit('''
-g(String f(int x)) {}
-''');
-    await assertHasAssistAt(
-        'f(', DartAssistKind.CONVERT_INTO_GENERIC_FUNCTION_SYNTAX, '''
-g(String Function(int x) f) {}
-''');
-  }
-
-  test_convertToGetter_BAD_noInitializer() async {
-    verifyNoTestUnitErrors = false;
-    await resolveTestUnit('''
-class A {
-  final int foo;
-}
-''');
-    await assertNoAssistAt('foo', DartAssistKind.CONVERT_INTO_GETTER);
-  }
-
-  test_convertToGetter_BAD_notFinal() async {
-    await resolveTestUnit('''
-class A {
-  int foo = 1;
-}
-''');
-    await assertNoAssistAt('foo', DartAssistKind.CONVERT_INTO_GETTER);
-  }
-
-  test_convertToGetter_BAD_notSingleField() async {
-    await resolveTestUnit('''
-class A {
-  final int foo = 1, bar = 2;
-}
-''');
-    await assertNoAssistAt('foo', DartAssistKind.CONVERT_INTO_GETTER);
-  }
-
-  test_convertToGetter_OK() async {
-    await resolveTestUnit('''
-const myAnnotation = const Object();
-class A {
-  @myAnnotation
-  final int foo = 1 + 2;
-}
-''');
-    await assertHasAssistAt('foo =', DartAssistKind.CONVERT_INTO_GETTER, '''
-const myAnnotation = const Object();
-class A {
-  @myAnnotation
-  int get foo => 1 + 2;
-}
-''');
-  }
-
-  test_convertToGetter_OK_noType() async {
-    await resolveTestUnit('''
-class A {
-  final foo = 42;
-}
-''');
-    await assertHasAssistAt('foo =', DartAssistKind.CONVERT_INTO_GETTER, '''
-class A {
-  get foo => 42;
-}
-''');
-  }
-
-  test_convertToIntLiteral() async {
-    await resolveTestUnit('''
-const double myDouble = 42.0;
-''');
-    await assertHasAssistAt('42.0', DartAssistKind.CONVERT_TO_INT_LITERAL, '''
-const double myDouble = 42;
-''');
-  }
-
-  test_convertToIntLiteral_e() async {
-    await resolveTestUnit('''
-const double myDouble = 4.2e1;
-''');
-    await assertHasAssistAt('4.2e1', DartAssistKind.CONVERT_TO_INT_LITERAL, '''
-const double myDouble = 42;
-''');
-  }
-
-  test_convertToIntLiteral_eBig() async {
-    await resolveTestUnit('''
-const double myDouble = 4.2e99999;
-''');
-    await assertNoAssistAt('4.2e99999', DartAssistKind.CONVERT_TO_INT_LITERAL);
-  }
-
-  test_convertToIntLiteral_notDouble() async {
-    await resolveTestUnit('''
-const double myDouble = 42;
-''');
-    await assertNoAssistAt('42', DartAssistKind.CONVERT_TO_INT_LITERAL);
-  }
-
-  test_convertToIsNot_BAD_is_alreadyIsNot() async {
-    await resolveTestUnit('''
-main(p) {
-  p is! String;
-}
-''');
-    await assertNoAssistAt('is!', DartAssistKind.CONVERT_INTO_IS_NOT);
-  }
-
-  test_convertToIsNot_BAD_is_noEnclosingParenthesis() async {
-    await resolveTestUnit('''
-main(p) {
-  p is String;
-}
-''');
-    await assertNoAssistAt('is String', DartAssistKind.CONVERT_INTO_IS_NOT);
-  }
-
-  test_convertToIsNot_BAD_is_noPrefix() async {
-    await resolveTestUnit('''
-main(p) {
-  (p is String);
-}
-''');
-    await assertNoAssistAt('is String', DartAssistKind.CONVERT_INTO_IS_NOT);
-  }
-
-  test_convertToIsNot_BAD_is_notIsExpression() async {
-    await resolveTestUnit('''
-main(p) {
-  123 + 456;
-}
-''');
-    await assertNoAssistAt('123 +', DartAssistKind.CONVERT_INTO_IS_NOT);
-  }
-
-  test_convertToIsNot_BAD_is_notTheNotOperator() async {
-    verifyNoTestUnitErrors = false;
-    await resolveTestUnit('''
-main(p) {
-  ++(p is String);
-}
-''');
-    await assertNoAssistAt('is String', DartAssistKind.CONVERT_INTO_IS_NOT);
-  }
-
-  test_convertToIsNot_BAD_not_alreadyIsNot() async {
-    await resolveTestUnit('''
-main(p) {
-  !(p is! String);
-}
-''');
-    await assertNoAssistAt('!(p', DartAssistKind.CONVERT_INTO_IS_NOT);
-  }
-
-  test_convertToIsNot_BAD_not_noEnclosingParenthesis() async {
-    await resolveTestUnit('''
-main(p) {
-  !p;
-}
-''');
-    await assertNoAssistAt('!p', DartAssistKind.CONVERT_INTO_IS_NOT);
-  }
-
-  test_convertToIsNot_BAD_not_notIsExpression() async {
-    await resolveTestUnit('''
-main(p) {
-  !(p == null);
-}
-''');
-    await assertNoAssistAt('!(p', DartAssistKind.CONVERT_INTO_IS_NOT);
-  }
-
-  test_convertToIsNot_BAD_not_notTheNotOperator() async {
-    verifyNoTestUnitErrors = false;
-    await resolveTestUnit('''
-main(p) {
-  ++(p is String);
-}
-''');
-    await assertNoAssistAt('++(', DartAssistKind.CONVERT_INTO_IS_NOT);
-  }
-
-  test_convertToIsNot_OK_childOfIs_left() async {
-    await resolveTestUnit('''
-main(p) {
-  !(p is String);
-}
-''');
-    await assertHasAssistAt('p is', DartAssistKind.CONVERT_INTO_IS_NOT, '''
-main(p) {
-  p is! String;
-}
-''');
-  }
-
-  test_convertToIsNot_OK_childOfIs_right() async {
-    await resolveTestUnit('''
-main(p) {
-  !(p is String);
-}
-''');
-    await assertHasAssistAt('String)', DartAssistKind.CONVERT_INTO_IS_NOT, '''
-main(p) {
-  p is! String;
-}
-''');
-  }
-
-  test_convertToIsNot_OK_is() async {
-    await resolveTestUnit('''
-main(p) {
-  !(p is String);
-}
-''');
-    await assertHasAssistAt('is String', DartAssistKind.CONVERT_INTO_IS_NOT, '''
-main(p) {
-  p is! String;
-}
-''');
-  }
-
-  test_convertToIsNot_OK_is_higherPrecedencePrefix() async {
-    await resolveTestUnit('''
-main(p) {
-  !!(p is String);
-}
-''');
-    await assertHasAssistAt('is String', DartAssistKind.CONVERT_INTO_IS_NOT, '''
-main(p) {
-  !(p is! String);
-}
-''');
-  }
-
-  test_convertToIsNot_OK_is_not_higherPrecedencePrefix() async {
-    await resolveTestUnit('''
-main(p) {
-  !!(p is String);
-}
-''');
-    await assertHasAssistAt('!(p', DartAssistKind.CONVERT_INTO_IS_NOT, '''
-main(p) {
-  !(p is! String);
-}
-''');
-  }
-
-  test_convertToIsNot_OK_not() async {
-    await resolveTestUnit('''
-main(p) {
-  !(p is String);
-}
-''');
-    await assertHasAssistAt('!(p', DartAssistKind.CONVERT_INTO_IS_NOT, '''
-main(p) {
-  p is! String;
-}
-''');
-  }
-
-  test_convertToIsNot_OK_parentheses() async {
-    await resolveTestUnit('''
-main(p) {
-  !(p is String);
-}
-''');
-    await assertHasAssistAt('(p is', DartAssistKind.CONVERT_INTO_IS_NOT, '''
-main(p) {
-  p is! String;
-}
-''');
-  }
-
-  test_convertToIsNotEmpty_BAD_noBang() async {
-    verifyNoTestUnitErrors = false;
-    await resolveTestUnit('''
-main(String str) {
-  ~str.isEmpty;
-}
-''');
-    await assertNoAssistAt(
-        'isEmpty;', DartAssistKind.CONVERT_INTO_IS_NOT_EMPTY);
-  }
-
-  test_convertToIsNotEmpty_BAD_noIsNotEmpty() async {
-    await resolveTestUnit('''
-class A {
-  bool get isEmpty => false;
-}
-main(A a) {
-  !a.isEmpty;
-}
-''');
-    await assertNoAssistAt(
-        'isEmpty;', DartAssistKind.CONVERT_INTO_IS_NOT_EMPTY);
-  }
-
-  test_convertToIsNotEmpty_BAD_notInPrefixExpression() async {
-    await resolveTestUnit('''
-main(String str) {
-  str.isEmpty;
-}
-''');
-    await assertNoAssistAt(
-        'isEmpty;', DartAssistKind.CONVERT_INTO_IS_NOT_EMPTY);
-  }
-
-  test_convertToIsNotEmpty_BAD_notIsEmpty() async {
-    await resolveTestUnit('''
-main(int p) {
-  !p.isEven;
-}
-''');
-    await assertNoAssistAt('isEven;', DartAssistKind.CONVERT_INTO_IS_NOT_EMPTY);
-  }
-
-  test_convertToIsNotEmpty_OK_on_isEmpty() async {
-    await resolveTestUnit('''
-main(String str) {
-  !str.isEmpty;
-}
-''');
-    await assertHasAssistAt(
-        'isEmpty', DartAssistKind.CONVERT_INTO_IS_NOT_EMPTY, '''
-main(String str) {
-  str.isNotEmpty;
-}
-''');
-  }
-
-  test_convertToIsNotEmpty_OK_on_str() async {
-    await resolveTestUnit('''
-main(String str) {
-  !str.isEmpty;
-}
-''');
-    await assertHasAssistAt(
-        'str.', DartAssistKind.CONVERT_INTO_IS_NOT_EMPTY, '''
-main(String str) {
-  str.isNotEmpty;
-}
-''');
-  }
-
-  test_convertToIsNotEmpty_OK_propertyAccess() async {
-    await resolveTestUnit('''
-main(String str) {
-  !'text'.isEmpty;
-}
-''');
-    await assertHasAssistAt(
-        'isEmpty', DartAssistKind.CONVERT_INTO_IS_NOT_EMPTY, '''
-main(String str) {
-  'text'.isNotEmpty;
-}
-''');
-  }
-
-  test_convertToNormalParameter_OK_dynamic() async {
-    await resolveTestUnit('''
-class A {
-  var test;
-  A(this.test) {
-  }
-}
-''');
-    await assertHasAssistAt(
-        'test)', DartAssistKind.CONVERT_TO_NORMAL_PARAMETER, '''
-class A {
-  var test;
-  A(test) : test = test {
-  }
-}
-''');
-  }
-
-  test_convertToNormalParameter_OK_firstInitializer() async {
-    await resolveTestUnit('''
-class A {
-  int test;
-  A(this.test) {
-  }
-}
-''');
-    await assertHasAssistAt(
-        'test)', DartAssistKind.CONVERT_TO_NORMAL_PARAMETER, '''
-class A {
-  int test;
-  A(int test) : test = test {
-  }
-}
-''');
-  }
-
-  test_convertToNormalParameter_OK_secondInitializer() async {
-    await resolveTestUnit('''
-class A {
-  double aaa;
-  int bbb;
-  A(this.bbb) : aaa = 1.0;
-}
-''');
-    await assertHasAssistAt(
-        'bbb)', DartAssistKind.CONVERT_TO_NORMAL_PARAMETER, '''
-class A {
-  double aaa;
-  int bbb;
-  A(int bbb) : aaa = 1.0, bbb = bbb;
-}
-''');
-  }
-
-  test_convertToSingleQuotedString_BAD_one_embeddedTarget() async {
-    await resolveTestUnit('''
-main() {
-  print("a'b'c");
-}
-''');
-    await assertNoAssistAt(
-        '"a', DartAssistKind.CONVERT_TO_SINGLE_QUOTED_STRING);
-  }
-
-  test_convertToSingleQuotedString_BAD_one_enclosingTarget() async {
-    await resolveTestUnit('''
-main() {
-  print('abc');
-}
-''');
-    await assertNoAssistAt(
-        "'ab", DartAssistKind.CONVERT_TO_SINGLE_QUOTED_STRING);
-  }
-
-  test_convertToSingleQuotedString_BAD_three_embeddedTarget() async {
-    await resolveTestUnit('''
-main() {
-  print("""a''\'bc""");
-}
-''');
-    await assertNoAssistAt(
-        '"a', DartAssistKind.CONVERT_TO_SINGLE_QUOTED_STRING);
-  }
-
-  test_convertToSingleQuotedString_BAD_three_enclosingTarget() async {
-    await resolveTestUnit("""
-main() {
-  print('''abc''');
-}
-""");
-    await assertNoAssistAt(
-        "'ab", DartAssistKind.CONVERT_TO_SINGLE_QUOTED_STRING);
-  }
-
-  test_convertToSingleQuotedString_OK_one_interpolation() async {
-    await resolveTestUnit(r'''
-main() {
-  var b = 'b';
-  var c = 'c';
-  print("a $b-${c} d");
-}
-''');
-    await assertHasAssistAt(
-        r'"a $b', DartAssistKind.CONVERT_TO_SINGLE_QUOTED_STRING, r'''
-main() {
-  var b = 'b';
-  var c = 'c';
-  print('a $b-${c} d');
-}
-''');
-  }
-
-  test_convertToSingleQuotedString_OK_one_raw() async {
-    await resolveTestUnit('''
-main() {
-  print(r"abc");
-}
-''');
-    await assertHasAssistAt(
-        '"ab', DartAssistKind.CONVERT_TO_SINGLE_QUOTED_STRING, '''
-main() {
-  print(r'abc');
-}
-''');
-  }
-
-  test_convertToSingleQuotedString_OK_one_simple() async {
-    await resolveTestUnit('''
-main() {
-  print("abc");
-}
-''');
-    await assertHasAssistAt(
-        '"ab', DartAssistKind.CONVERT_TO_SINGLE_QUOTED_STRING, '''
-main() {
-  print('abc');
-}
-''');
-  }
-
-  test_convertToSingleQuotedString_OK_three_interpolation() async {
-    await resolveTestUnit(r'''
-main() {
-  var b = 'b';
-  var c = 'c';
-  print("""a $b-${c} d""");
-}
-''');
-    await assertHasAssistAt(
-        r'"a $b', DartAssistKind.CONVERT_TO_SINGLE_QUOTED_STRING, r"""
-main() {
-  var b = 'b';
-  var c = 'c';
-  print('''a $b-${c} d''');
-}
-""");
-  }
-
-  test_convertToSingleQuotedString_OK_three_raw() async {
-    await resolveTestUnit('''
-main() {
-  print(r"""abc""");
-}
-''');
-    await assertHasAssistAt(
-        '"ab', DartAssistKind.CONVERT_TO_SINGLE_QUOTED_STRING, """
-main() {
-  print(r'''abc''');
-}
-""");
-  }
-
-  test_convertToSingleQuotedString_OK_three_simple() async {
-    await resolveTestUnit('''
-main() {
-  print("""abc""");
-}
-''');
-    await assertHasAssistAt(
-        '"ab', DartAssistKind.CONVERT_TO_SINGLE_QUOTED_STRING, """
-main() {
-  print('''abc''');
-}
-""");
-  }
-
-  test_encapsulateField_BAD_alreadyPrivate() async {
-    await resolveTestUnit('''
-class A {
-  int _test = 42;
-}
-main(A a) {
-  print(a._test);
-}
-''');
-    await assertNoAssistAt('_test =', DartAssistKind.ENCAPSULATE_FIELD);
-  }
-
-  test_encapsulateField_BAD_final() async {
-    await resolveTestUnit('''
-class A {
-  final int test = 42;
-}
-''');
-    await assertNoAssistAt('test =', DartAssistKind.ENCAPSULATE_FIELD);
-  }
-
-  test_encapsulateField_BAD_multipleFields() async {
-    await resolveTestUnit('''
-class A {
-  int aaa, bbb, ccc;
-}
-main(A a) {
-  print(a.bbb);
-}
-''');
-    await assertNoAssistAt('bbb, ', DartAssistKind.ENCAPSULATE_FIELD);
-  }
-
-  test_encapsulateField_BAD_notOnName() async {
-    await resolveTestUnit('''
-class A {
-  int test = 1 + 2 + 3;
-}
-''');
-    await assertNoAssistAt('+ 2', DartAssistKind.ENCAPSULATE_FIELD);
-  }
-
-  test_encapsulateField_BAD_parseError() async {
-    verifyNoTestUnitErrors = false;
-    await resolveTestUnit('''
-class A {
-  int; // marker
-}
-main(A a) {
-  print(a.test);
-}
-''');
-    await assertNoAssistAt('; // marker', DartAssistKind.ENCAPSULATE_FIELD);
-  }
-
-  test_encapsulateField_BAD_static() async {
-    await resolveTestUnit('''
-class A {
-  static int test = 42;
-}
-''');
-    await assertNoAssistAt('test =', DartAssistKind.ENCAPSULATE_FIELD);
-  }
-
-  test_encapsulateField_OK_documentation() async {
-    await resolveTestUnit('''
-class A {
-  /// AAA
-  /// BBB
-  int test;
-}
-''');
-    await assertHasAssistAt('test;', DartAssistKind.ENCAPSULATE_FIELD, '''
-class A {
-  /// AAA
-  /// BBB
-  int _test;
-
-  /// AAA
-  /// BBB
-  int get test => _test;
-
-  /// AAA
-  /// BBB
-  set test(int test) {
-    _test = test;
-  }
-}
-''');
-  }
-
-  test_encapsulateField_OK_hasType() async {
-    await resolveTestUnit('''
-class A {
-  int test = 42;
-  A(this.test);
-}
-main(A a) {
-  print(a.test);
-}
-''');
-    await assertHasAssistAt('test = 42', DartAssistKind.ENCAPSULATE_FIELD, '''
-class A {
-  int _test = 42;
-
-  int get test => _test;
-
-  set test(int test) {
-    _test = test;
-  }
-  A(this._test);
-}
-main(A a) {
-  print(a.test);
-}
-''');
-  }
-
-  test_encapsulateField_OK_noType() async {
-    await resolveTestUnit('''
-class A {
-  var test = 42;
-}
-main(A a) {
-  print(a.test);
-}
-''');
-    await assertHasAssistAt('test = 42', DartAssistKind.ENCAPSULATE_FIELD, '''
-class A {
-  var _test = 42;
-
-  get test => _test;
-
-  set test(test) {
-    _test = test;
-  }
-}
-main(A a) {
-  print(a.test);
-}
-''');
-  }
-
-  test_exchangeBinaryExpressionArguments_BAD_extraLength() async {
-    await resolveTestUnit('''
-main() {
-  111 + 222;
-}
-''');
-    length = 3;
-    await assertNoAssistAt('+ 222', DartAssistKind.EXCHANGE_OPERANDS);
-  }
-
-  test_exchangeBinaryExpressionArguments_BAD_onOperand() async {
-    await resolveTestUnit('''
-main() {
-  111 + 222;
-}
-''');
-    length = 3;
-    await assertNoAssistAt('11 +', DartAssistKind.EXCHANGE_OPERANDS);
-  }
-
-  test_exchangeBinaryExpressionArguments_BAD_selectionWithBinary() async {
-    await resolveTestUnit('''
-main() {
-  1 + 2 + 3;
-}
-''');
-    length = '1 + 2 + 3'.length;
-    await assertNoAssistAt('1 + 2 + 3', DartAssistKind.EXCHANGE_OPERANDS);
-  }
-
-  test_exchangeBinaryExpressionArguments_OK_compare() async {
-    const initialOperators = const ['<', '<=', '>', '>='];
-    const resultOperators = const ['>', '>=', '<', '<='];
-    for (int i = 0; i <= 0; i++) {
-      String initialOperator = initialOperators[i];
-      String resultOperator = resultOperators[i];
-      await resolveTestUnit('''
-bool main(int a, int b) {
-  return a $initialOperator b;
-}
-''');
-      await assertHasAssistAt(
-          initialOperator, DartAssistKind.EXCHANGE_OPERANDS, '''
-bool main(int a, int b) {
-  return b $resultOperator a;
-}
-''');
-    }
-  }
-
-  test_exchangeBinaryExpressionArguments_OK_extended_mixOperator_1() async {
-    await resolveTestUnit('''
-main() {
-  1 * 2 * 3 + 4;
-}
-''');
-    await assertHasAssistAt('* 2', DartAssistKind.EXCHANGE_OPERANDS, '''
-main() {
-  2 * 3 * 1 + 4;
-}
-''');
-  }
-
-  test_exchangeBinaryExpressionArguments_OK_extended_mixOperator_2() async {
-    await resolveTestUnit('''
-main() {
-  1 + 2 - 3 + 4;
-}
-''');
-    await assertHasAssistAt('+ 2', DartAssistKind.EXCHANGE_OPERANDS, '''
-main() {
-  2 + 1 - 3 + 4;
-}
-''');
-  }
-
-  test_exchangeBinaryExpressionArguments_OK_extended_sameOperator_afterFirst() async {
-    await resolveTestUnit('''
-main() {
-  1 + 2 + 3;
-}
-''');
-    await assertHasAssistAt('+ 2', DartAssistKind.EXCHANGE_OPERANDS, '''
-main() {
-  2 + 3 + 1;
-}
-''');
-  }
-
-  test_exchangeBinaryExpressionArguments_OK_extended_sameOperator_afterSecond() async {
-    await resolveTestUnit('''
-main() {
-  1 + 2 + 3;
-}
-''');
-    await assertHasAssistAt('+ 3', DartAssistKind.EXCHANGE_OPERANDS, '''
-main() {
-  3 + 1 + 2;
-}
-''');
-  }
-
-  test_exchangeBinaryExpressionArguments_OK_simple_afterOperator() async {
-    await resolveTestUnit('''
-main() {
-  1 + 2;
-}
-''');
-    await assertHasAssistAt(' 2', DartAssistKind.EXCHANGE_OPERANDS, '''
-main() {
-  2 + 1;
-}
-''');
-  }
-
-  test_exchangeBinaryExpressionArguments_OK_simple_beforeOperator() async {
-    await resolveTestUnit('''
-main() {
-  1 + 2;
-}
-''');
-    await assertHasAssistAt('+ 2', DartAssistKind.EXCHANGE_OPERANDS, '''
-main() {
-  2 + 1;
-}
-''');
-  }
-
-  test_exchangeBinaryExpressionArguments_OK_simple_fullSelection() async {
-    await resolveTestUnit('''
-main() {
-  1 + 2;
-}
-''');
-    length = '1 + 2'.length;
-    await assertHasAssistAt('1 + 2', DartAssistKind.EXCHANGE_OPERANDS, '''
-main() {
-  2 + 1;
-}
-''');
-  }
-
-  test_exchangeBinaryExpressionArguments_OK_simple_withLength() async {
-    await resolveTestUnit('''
-main() {
-  1 + 2;
-}
-''');
-    length = 2;
-    await assertHasAssistAt('+ 2', DartAssistKind.EXCHANGE_OPERANDS, '''
-main() {
-  2 + 1;
-}
-''');
-  }
-
-  test_flutterConvertToChildren_BAD_childUnresolved() async {
-    addFlutterPackage();
-    verifyNoTestUnitErrors = false;
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-build() {
-  return new Row(
-    /*caret*/child: new Container()
-  );
-}
-''');
-    _setCaretLocation();
-    await assertNoAssist(DartAssistKind.FLUTTER_CONVERT_TO_CHILDREN);
-  }
-
-  test_flutterConvertToChildren_BAD_notOnChild() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-build() {
-  return new Scaffold(
-    body: /*caret*/new Center(
-      child: new Container(),
-    ),
-  );
-}
-''');
-    _setCaretLocation();
-    await assertNoAssist(DartAssistKind.FLUTTER_CONVERT_TO_CHILDREN);
-  }
-
-  test_flutterConvertToChildren_OK_multiLine() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-build() {
-  return new Scaffold(
-// start
-    body: new Center(
-      /*caret*/child: new Container(
-        width: 200.0,
-        height: 300.0,
-      ),
-      key: null,
-    ),
-// end
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_CONVERT_TO_CHILDREN, '''
-import 'package:flutter/material.dart';
-build() {
-  return new Scaffold(
-// start
-    body: new Center(
-      /*caret*/children: <Widget>[
-        new Container(
-          width: 200.0,
-          height: 300.0,
-        ),
-      ],
-      key: null,
-    ),
-// end
-  );
-}
-''');
-  }
-
-  test_flutterConvertToChildren_OK_newlineChild() async {
-    // This case could occur with deeply nested constructors, common in Flutter.
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-build() {
-  return new Scaffold(
-// start
-    body: new Center(
-      /*caret*/child:
-          new Container(
-        width: 200.0,
-        height: 300.0,
-      ),
-      key: null,
-    ),
-// end
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_CONVERT_TO_CHILDREN, '''
-import 'package:flutter/material.dart';
-build() {
-  return new Scaffold(
-// start
-    body: new Center(
-      /*caret*/children: <Widget>[
-        new Container(
-          width: 200.0,
-          height: 300.0,
-        ),
-      ],
-      key: null,
-    ),
-// end
-  );
-}
-''');
-  }
-
-  test_flutterConvertToChildren_OK_singleLine() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-build() {
-  return new Scaffold(
-// start
-    body: new Center(
-      /*caret*/child: new GestureDetector(),
-      key: null,
-    ),
-// end
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_CONVERT_TO_CHILDREN, '''
-import 'package:flutter/material.dart';
-build() {
-  return new Scaffold(
-// start
-    body: new Center(
-      /*caret*/children: <Widget>[new GestureDetector()],
-      key: null,
-    ),
-// end
-  );
-}
-''');
-  }
-
-  test_flutterConvertToStatefulWidget_BAD_notClass() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-/*caret*/main() {}
-''');
-    _setCaretLocation();
-    assertNoAssist(DartAssistKind.FLUTTER_CONVERT_TO_STATEFUL_WIDGET);
-  }
-
-  test_flutterConvertToStatefulWidget_BAD_notStatelessWidget() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-class /*caret*/MyWidget extends Text {
-  MyWidget() : super('');
-}
-''');
-    _setCaretLocation();
-    assertNoAssist(DartAssistKind.FLUTTER_CONVERT_TO_STATEFUL_WIDGET);
-  }
-
-  test_flutterConvertToStatefulWidget_BAD_notWidget() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-class /*caret*/MyWidget {}
-''');
-    _setCaretLocation();
-    assertNoAssist(DartAssistKind.FLUTTER_CONVERT_TO_STATEFUL_WIDGET);
-  }
-
-  test_flutterConvertToStatefulWidget_OK() async {
-    addFlutterPackage();
-    await resolveTestUnit(r'''
-import 'package:flutter/material.dart';
-
-class /*caret*/MyWidget extends StatelessWidget {
-  final String aaa;
-  final String bbb;
-
-  const MyWidget(this.aaa, this.bbb);
-
-  @override
-  Widget build(BuildContext context) {
-    return new Row(
-      children: [
-        new Text(aaa),
-        new Text(bbb),
-        new Text('$aaa'),
-        new Text('${bbb}'),
-      ],
-    );
-  }
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(
-        DartAssistKind.FLUTTER_CONVERT_TO_STATEFUL_WIDGET, r'''
-import 'package:flutter/material.dart';
-
-class /*caret*/MyWidget extends StatefulWidget {
-  final String aaa;
-  final String bbb;
-
-  const MyWidget(this.aaa, this.bbb);
-
-  @override
-  MyWidgetState createState() {
-    return new MyWidgetState();
-  }
-}
-
-class MyWidgetState extends State<MyWidget> {
-  @override
-  Widget build(BuildContext context) {
-    return new Row(
-      children: [
-        new Text(widget.aaa),
-        new Text(widget.bbb),
-        new Text('${widget.aaa}'),
-        new Text('${widget.bbb}'),
-      ],
-    );
-  }
-}
-''');
-  }
-
-  test_flutterConvertToStatefulWidget_OK_empty() async {
-    addFlutterPackage();
-    await resolveTestUnit(r'''
-import 'package:flutter/material.dart';
-
-class /*caret*/MyWidget extends StatelessWidget {
-  @override
-  Widget build(BuildContext context) {
-    return new Container();
-  }
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(
-        DartAssistKind.FLUTTER_CONVERT_TO_STATEFUL_WIDGET, r'''
-import 'package:flutter/material.dart';
-
-class /*caret*/MyWidget extends StatefulWidget {
-  @override
-  MyWidgetState createState() {
-    return new MyWidgetState();
-  }
-}
-
-class MyWidgetState extends State<MyWidget> {
-  @override
-  Widget build(BuildContext context) {
-    return new Container();
-  }
-}
-''');
-  }
-
-  test_flutterConvertToStatefulWidget_OK_fields() async {
-    addFlutterPackage();
-    await resolveTestUnit(r'''
-import 'package:flutter/material.dart';
-
-class /*caret*/MyWidget extends StatelessWidget {
-  static String staticField1;
-  final String instanceField1;
-  final String instanceField2;
-  String instanceField3;
-  static String staticField2;
-  String instanceField4;
-  String instanceField5;
-  static String staticField3;
-
-  MyWidget(this.instanceField1) : instanceField2 = '' {
-    instanceField3 = '';
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    instanceField4 = instanceField1;
-    return new Row(
-      children: [
-        new Text(instanceField1),
-        new Text(instanceField2),
-        new Text(instanceField3),
-        new Text(instanceField4),
-        new Text(instanceField5),
-        new Text(staticField1),
-        new Text(staticField2),
-        new Text(staticField3),
-      ],
-    );
-  }
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(
-        DartAssistKind.FLUTTER_CONVERT_TO_STATEFUL_WIDGET, r'''
-import 'package:flutter/material.dart';
-
-class /*caret*/MyWidget extends StatefulWidget {
-  static String staticField1;
-  final String instanceField1;
-  final String instanceField2;
-  String instanceField3;
-  static String staticField2;
-  static String staticField3;
-
-  MyWidget(this.instanceField1) : instanceField2 = '' {
-    instanceField3 = '';
-  }
-
-  @override
-  MyWidgetState createState() {
-    return new MyWidgetState();
-  }
-}
-
-class MyWidgetState extends State<MyWidget> {
-  String instanceField4;
-
-  String instanceField5;
-
-  @override
-  Widget build(BuildContext context) {
-    instanceField4 = widget.instanceField1;
-    return new Row(
-      children: [
-        new Text(widget.instanceField1),
-        new Text(widget.instanceField2),
-        new Text(widget.instanceField3),
-        new Text(instanceField4),
-        new Text(instanceField5),
-        new Text(MyWidget.staticField1),
-        new Text(MyWidget.staticField2),
-        new Text(MyWidget.staticField3),
-      ],
-    );
-  }
-}
-''');
-  }
-
-  test_flutterConvertToStatefulWidget_OK_getters() async {
-    addFlutterPackage();
-    await resolveTestUnit(r'''
-import 'package:flutter/material.dart';
-
-class /*caret*/MyWidget extends StatelessWidget {
-  @override
-  Widget build(BuildContext context) {
-    return new Row(
-      children: [
-        new Text(staticGetter1),
-        new Text(staticGetter2),
-        new Text(instanceGetter1),
-        new Text(instanceGetter2),
-      ],
-    );
-  }
-
-  static String get staticGetter1 => '';
-
-  String get instanceGetter1 => '';
-
-  static String get staticGetter2 => '';
-
-  String get instanceGetter2 => '';
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(
-        DartAssistKind.FLUTTER_CONVERT_TO_STATEFUL_WIDGET, r'''
-import 'package:flutter/material.dart';
-
-class /*caret*/MyWidget extends StatefulWidget {
-  @override
-  MyWidgetState createState() {
-    return new MyWidgetState();
-  }
-
-  static String get staticGetter1 => '';
-
-  static String get staticGetter2 => '';
-}
-
-class MyWidgetState extends State<MyWidget> {
-  @override
-  Widget build(BuildContext context) {
-    return new Row(
-      children: [
-        new Text(MyWidget.staticGetter1),
-        new Text(MyWidget.staticGetter2),
-        new Text(instanceGetter1),
-        new Text(instanceGetter2),
-      ],
-    );
-  }
-
-  String get instanceGetter1 => '';
-
-  String get instanceGetter2 => '';
-}
-''');
-  }
-
-  test_flutterConvertToStatefulWidget_OK_methods() async {
-    addFlutterPackage();
-    await resolveTestUnit(r'''
-import 'package:flutter/material.dart';
-
-class /*caret*/MyWidget extends StatelessWidget {
-  static String staticField;
-  final String instanceField1;
-  String instanceField2;
-
-  MyWidget(this.instanceField1);
-
-  @override
-  Widget build(BuildContext context) {
-    return new Row(
-      children: [
-        new Text(instanceField1),
-        new Text(instanceField2),
-        new Text(staticField),
-      ],
-    );
-  }
-
-  void instanceMethod1() {
-    instanceMethod1();
-    instanceMethod2();
-    staticMethod1();
-  }
-
-  static void staticMethod1() {
-    print('static 1');
-  }
-
-  void instanceMethod2() {
-    print('instance 2');
-  }
-
-  static void staticMethod2() {
-    print('static 2');
-  }
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(
-        DartAssistKind.FLUTTER_CONVERT_TO_STATEFUL_WIDGET, r'''
-import 'package:flutter/material.dart';
-
-class /*caret*/MyWidget extends StatefulWidget {
-  static String staticField;
-  final String instanceField1;
-
-  MyWidget(this.instanceField1);
-
-  @override
-  MyWidgetState createState() {
-    return new MyWidgetState();
-  }
-
-  static void staticMethod1() {
-    print('static 1');
-  }
-
-  static void staticMethod2() {
-    print('static 2');
-  }
-}
-
-class MyWidgetState extends State<MyWidget> {
-  String instanceField2;
-
-  @override
-  Widget build(BuildContext context) {
-    return new Row(
-      children: [
-        new Text(widget.instanceField1),
-        new Text(instanceField2),
-        new Text(MyWidget.staticField),
-      ],
-    );
-  }
-
-  void instanceMethod1() {
-    instanceMethod1();
-    instanceMethod2();
-    MyWidget.staticMethod1();
-  }
-
-  void instanceMethod2() {
-    print('instance 2');
-  }
-}
-''');
-  }
-
-  test_flutterConvertToStatefulWidget_OK_tail() async {
-    addFlutterPackage();
-    await resolveTestUnit(r'''
-import 'package:flutter/material.dart';
-
-class /*caret*/MyWidget extends StatelessWidget {
-  @override
-  Widget build(BuildContext context) {
-    return new Container();
-  }
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(
-        DartAssistKind.FLUTTER_CONVERT_TO_STATEFUL_WIDGET, r'''
-import 'package:flutter/material.dart';
-
-class /*caret*/MyWidget extends StatefulWidget {
-  @override
-  MyWidgetState createState() {
-    return new MyWidgetState();
-  }
-}
-
-class MyWidgetState extends State<MyWidget> {
-  @override
-  Widget build(BuildContext context) {
-    return new Container();
-  }
-}
-''');
-  }
-
-  test_flutterMoveWidgetDown_BAD_last() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: <Widget>[
-      new Text('aaa'),
-      new Text('bbb'),
-      /*caret*/new Text('ccc'),
-    ],
-  );
-}
-''');
-    _setCaretLocation();
-    await assertNoAssist(DartAssistKind.FLUTTER_MOVE_DOWN);
-  }
-
-  test_flutterMoveWidgetDown_BAD_notInList() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  new Center(
-    child: /*caret*/new Text('aaa'),
-  );
-}
-''');
-    _setCaretLocation();
-    await assertNoAssist(DartAssistKind.FLUTTER_MOVE_DOWN);
-  }
-
-  test_flutterMoveWidgetDown_OK() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: <Widget>[
-      new Text('aaa'),
-      /*caret*/new Text('bbbbbb'),
-      new Text('ccccccccc'),
-    ],
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_MOVE_DOWN, '''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: <Widget>[
-      new Text('aaa'),
-      /*caret*/new Text('ccccccccc'),
-      new Text('bbbbbb'),
-    ],
-  );
-}
-''');
-    _assertExitPosition(before: "new Text('bbbbbb')");
-  }
-
-  test_flutterMoveWidgetUp_BAD_first() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: <Widget>[
-      /*caret*/new Text('aaa'),
-      new Text('bbb'),
-      new Text('ccc'),
-    ],
-  );
-}
-''');
-    _setCaretLocation();
-    await assertNoAssist(DartAssistKind.FLUTTER_MOVE_UP);
-  }
-
-  test_flutterMoveWidgetUp_BAD_notInList() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  new Center(
-    child: /*caret*/new Text('aaa'),
-  );
-}
-''');
-    _setCaretLocation();
-    await assertNoAssist(DartAssistKind.FLUTTER_MOVE_UP);
-  }
-
-  test_flutterMoveWidgetUp_OK() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: <Widget>[
-      new Text('aaa'),
-      /*caret*/new Text('bbbbbb'),
-      new Text('ccccccccc'),
-    ],
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_MOVE_UP, '''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: <Widget>[
-      new Text('bbbbbb'),
-      /*caret*/new Text('aaa'),
-      new Text('ccccccccc'),
-    ],
-  );
-}
-''');
-    _assertExitPosition(before: "new Text('bbbbbb')");
-  }
-
-  test_flutterRemoveWidget_BAD_childrenMultipleIntoChild() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  new Center(
-    child: new /*caret*/Row(
-      children: [
-        new Text('aaa'),
-        new Text('bbb'),
-      ],
-    ),
-  );
-}
-''');
-    _setCaretLocation();
-    await assertNoAssist(DartAssistKind.FLUTTER_REMOVE_WIDGET);
-  }
-
-  test_flutterRemoveWidget_OK_childIntoChild_multiLine() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: <Widget>[
-      new Center(
-        child: new /*caret*/Padding(
-          padding: const EdgeInsets.all(8.0),
-          child: new Center(
-            heightFactor: 0.5,
-            child: new Text('foo'),
-          ),
-        ),
-      ),
-    ],
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_REMOVE_WIDGET, '''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: <Widget>[
-      new Center(
-        child: new Center(
-          heightFactor: 0.5,
-          child: new Text('foo'),
-        ),
-      ),
-    ],
-  );
-}
-''');
-  }
-
-  test_flutterRemoveWidget_OK_childIntoChild_singleLine() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  new Padding(
-    padding: const EdgeInsets.all(8.0),
-    child: new /*caret*/Center(
-      heightFactor: 0.5,
-      child: new Text('foo'),
-    ),
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_REMOVE_WIDGET, '''
-import 'package:flutter/material.dart';
-main() {
-  new Padding(
-    padding: const EdgeInsets.all(8.0),
-    child: new Text('foo'),
-  );
-}
-''');
-  }
-
-  test_flutterRemoveWidget_OK_childIntoChildren() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: <Widget>[
-      new Text('foo'),
-      new /*caret*/Center(
-        heightFactor: 0.5,
-        child: new Padding(
-          padding: const EdgeInsets.all(8.0),
-          child: new Text('bar'),
-        ),
-      ),
-      new Text('baz'),
-    ],
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_REMOVE_WIDGET, '''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: <Widget>[
-      new Text('foo'),
-      new Padding(
-        padding: const EdgeInsets.all(8.0),
-        child: new Text('bar'),
-      ),
-      new Text('baz'),
-    ],
-  );
-}
-''');
-  }
-
-  test_flutterRemoveWidget_OK_childrenOneIntoChild() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  new Center(
-    child: /*caret*/new Column(
-      children: [
-        new Text('foo'),
-      ],
-    ),
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_REMOVE_WIDGET, '''
-import 'package:flutter/material.dart';
-main() {
-  new Center(
-    child: /*caret*/new Text('foo'),
-  );
-}
-''');
-  }
-
-  test_flutterRemoveWidget_OK_childrenOneIntoReturn() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  return /*caret*/new Column(
-    children: [
-      new Text('foo'),
-    ],
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_REMOVE_WIDGET, '''
-import 'package:flutter/material.dart';
-main() {
-  return /*caret*/new Text('foo');
-}
-''');
-  }
-
-  test_flutterRemoveWidget_OK_intoChildren() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: <Widget>[
-      new Text('aaa'),
-      new /*caret*/Column(
-        children: [
-          new Row(
-            children: [
-              new Text('bbb'),
-              new Text('ccc'),
-            ],
-          ),
-          new Row(
-            children: [
-              new Text('ddd'),
-              new Text('eee'),
-            ],
-          ),
-        ],
-      ),
-      new Text('fff'),
-    ],
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_REMOVE_WIDGET, '''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: <Widget>[
-      new Text('aaa'),
-      new Row(
-        children: [
-          new Text('bbb'),
-          new Text('ccc'),
-        ],
-      ),
-      new Row(
-        children: [
-          new Text('ddd'),
-          new Text('eee'),
-        ],
-      ),
-      new Text('fff'),
-    ],
-  );
-}
-''');
-  }
-
-  test_flutterSwapWithChild_OK() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-build() {
-  return new Scaffold(
-// start
-    body: new /*caret*/GestureDetector(
-      onTap: () => startResize(),
-      child: new Center(
-        child: new Container(
-          width: 200.0,
-          height: 300.0,
-        ),
-        key: null,
-      ),
-    ),
-// end
-  );
-}
-startResize() {}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_SWAP_WITH_CHILD, '''
-import 'package:flutter/material.dart';
-build() {
-  return new Scaffold(
-// start
-    body: new Center(
-      key: null,
-      child: new /*caret*/GestureDetector(
-        onTap: () => startResize(),
-        child: new Container(
-          width: 200.0,
-          height: 300.0,
-        ),
-      ),
-    ),
-// end
-  );
-}
-startResize() {}
-''');
-  }
-
-  test_flutterSwapWithChild_OK_notFormatted() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-
-class Foo extends StatefulWidget {
-  @override
-  _State createState() => new _State();
-}
-
-class _State extends State<Foo> {
-  @override
-  Widget build(BuildContext context) {
-    return new /*caret*/Expanded(
-      flex: 2,
-      child: new GestureDetector(
-        child: new Text(
-          'foo',
-        ), onTap: () {
-          print(42);
-      },
-      ),
-    );
-  }
-}''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_SWAP_WITH_CHILD, '''
-import 'package:flutter/material.dart';
-
-class Foo extends StatefulWidget {
-  @override
-  _State createState() => new _State();
-}
-
-class _State extends State<Foo> {
-  @override
-  Widget build(BuildContext context) {
-    return new GestureDetector(
-      onTap: () {
-        print(42);
-    },
-      child: new /*caret*/Expanded(
-        flex: 2,
-        child: new Text(
-          'foo',
-        ),
-      ),
-    );
-  }
-}''');
-  }
-
-  test_flutterSwapWithParent_OK() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-build() {
-  return new Scaffold(
-// start
-    body: new Center(
-      child: new /*caret*/GestureDetector(
-        onTap: () => startResize(),
-        child: new Container(
-          width: 200.0,
-          height: 300.0,
-        ),
-      ),
-      key: null,
-    ),
-// end
-  );
-}
-startResize() {}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_SWAP_WITH_PARENT, '''
-import 'package:flutter/material.dart';
-build() {
-  return new Scaffold(
-// start
-    body: new /*caret*/GestureDetector(
-      onTap: () => startResize(),
-      child: new Center(
-        key: null,
-        child: new Container(
-          width: 200.0,
-          height: 300.0,
-        ),
-      ),
-    ),
-// end
-  );
-}
-startResize() {}
-''');
-  }
-
-  test_flutterSwapWithParent_OK_notFormatted() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-
-class Foo extends StatefulWidget {
-  @override
-  _State createState() => new _State();
-}
-
-class _State extends State<Foo> {
-  @override
-  Widget build(BuildContext context) {
-    return new GestureDetector(
-      child: new /*caret*/Expanded(
-        child: new Text(
-          'foo',
-        ),
-        flex: 2,
-      ), onTap: () {
-        print(42);
-    },
-    );
-  }
-}''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_SWAP_WITH_PARENT, '''
-import 'package:flutter/material.dart';
-
-class Foo extends StatefulWidget {
-  @override
-  _State createState() => new _State();
-}
-
-class _State extends State<Foo> {
-  @override
-  Widget build(BuildContext context) {
-    return new /*caret*/Expanded(
-      flex: 2,
-      child: new GestureDetector(
-        onTap: () {
-          print(42);
-      },
-        child: new Text(
-          'foo',
-        ),
-      ),
-    );
-  }
-}''');
-  }
-
-  test_flutterSwapWithParent_OK_outerIsInChildren() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: [
-      new Column(
-        children: [
-          new Padding(
-            padding: new EdgeInsets.all(16.0),
-            child: new /*caret*/Center(
-              child: new Column(
-                crossAxisAlignment: CrossAxisAlignment.start,
-                children: <Widget>[],
-              ),
-            ),
-          ),
-        ],
-      ),
-    ],
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_SWAP_WITH_PARENT, '''
-import 'package:flutter/material.dart';
-main() {
-  new Column(
-    children: [
-      new Column(
-        children: [
-          new /*caret*/Center(
-            child: new Padding(
-              padding: new EdgeInsets.all(16.0),
-              child: new Column(
-                crossAxisAlignment: CrossAxisAlignment.start,
-                children: <Widget>[],
-              ),
-            ),
-          ),
-        ],
-      ),
-    ],
-  );
-}
-''');
-  }
-
-  test_flutterWrapCenter_BAD_onCenter() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return /*caret*/new Center();
-  }
-}
-''');
-    _setCaretLocation();
-    await assertNoAssist(DartAssistKind.FLUTTER_WRAP_CENTER);
-  }
-
-  test_flutterWrapCenter_OK() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return /*caret*/new Container();
-  }
-}
-''');
-    _setCaretLocation();
-    if (omitNew) {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_CENTER, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return /*caret*/Center(child: new Container());
-  }
-}
-''');
-    } else {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_CENTER, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return /*caret*/new Center(child: new Container());
-  }
-}
-''');
-    }
-  }
-
-  test_flutterWrapCenter_OK_implicitNew() async {
-    configurePreviewDart2();
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return /*caret*/Container();
-  }
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_WRAP_CENTER, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return /*caret*/Center(child: Container());
-  }
-}
-''');
-  }
-
-  test_flutterWrapCenter_OK_namedConstructor() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-
-class MyWidget extends StatelessWidget {
-  MyWidget.named();
-
-  Widget build(BuildContext context) => null;
-}
-
-main() {
-  return MyWidget./*caret*/named();
-}
-''');
-    _setCaretLocation();
-    if (omitNew) {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_CENTER, '''
-import 'package:flutter/widgets.dart';
-
-class MyWidget extends StatelessWidget {
-  MyWidget.named();
-
-  Widget build(BuildContext context) => null;
-}
-
-main() {
-  return Center(child: MyWidget./*caret*/named());
-}
-''');
-    } else {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_CENTER, '''
-import 'package:flutter/widgets.dart';
-
-class MyWidget extends StatelessWidget {
-  MyWidget.named();
-
-  Widget build(BuildContext context) => null;
-}
-
-main() {
-  return new Center(child: MyWidget./*caret*/named());
-}
-''');
-    }
-  }
-
-  test_flutterWrapColumn_OK_coveredByWidget() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-
-class FakeFlutter {
-  main() {
-    return new Container(
-      child: new /*caret*/Text('aaa'),
-    );
-  }
-}
-''');
-    _setCaretLocation();
-    if (omitNew) {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_COLUMN, '''
-import 'package:flutter/widgets.dart';
-
-class FakeFlutter {
-  main() {
-    return new Container(
-      child: Column(
-        children: <Widget>[
-          new /*caret*/Text('aaa'),
-        ],
-      ),
-    );
-  }
-}
-''');
-    } else {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_COLUMN, '''
-import 'package:flutter/widgets.dart';
-
-class FakeFlutter {
-  main() {
-    return new Container(
-      child: new Column(
-        children: <Widget>[
-          new /*caret*/Text('aaa'),
-        ],
-      ),
-    );
-  }
-}
-''');
-    }
-  }
-
-  test_flutterWrapColumn_OK_coversWidgets() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-
-class FakeFlutter {
-  main() {
-    return new Row(children: [
-      new Text('aaa'),
-// start
-      new Text('bbb'),
-      new Text('ccc'),
-// end
-      new Text('ddd'),
-    ]);
-  }
-}
-''');
-    _setStartEndSelection();
-    if (omitNew) {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_COLUMN, '''
-import 'package:flutter/widgets.dart';
-
-class FakeFlutter {
-  main() {
-    return new Row(children: [
-      new Text('aaa'),
-// start
-      Column(
-        children: <Widget>[
-          new Text('bbb'),
-          new Text('ccc'),
-        ],
-      ),
-// end
-      new Text('ddd'),
-    ]);
-  }
-}
-''');
-    } else {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_COLUMN, '''
-import 'package:flutter/widgets.dart';
-
-class FakeFlutter {
-  main() {
-    return new Row(children: [
-      new Text('aaa'),
-// start
-      new Column(
-        children: <Widget>[
-          new Text('bbb'),
-          new Text('ccc'),
-        ],
-      ),
-// end
-      new Text('ddd'),
-    ]);
-  }
-}
-''');
-    }
-  }
-
-  test_flutterWrapColumn_OK_implicitNew() async {
-    configurePreviewDart2();
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-
-main() {
-  return Container(
-    child: /*caret*/Text('aaa'),
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_WRAP_COLUMN, '''
-import 'package:flutter/widgets.dart';
-
-main() {
-  return Container(
-    child: /*caret*/Column(
-      children: <Widget>[
-        Text('aaa'),
-      ],
-    ),
-  );
-}
-''');
-  }
-
-  test_flutterWrapContainer_BAD_onContainer() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-main() {
-  return /*caret*/new Container();
-}
-''');
-    _setCaretLocation();
-    await assertNoAssist(DartAssistKind.FLUTTER_WRAP_CONTAINER);
-  }
-
-  test_flutterWrapContainer_OK() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-main() {
-  /*caret*/new Text('a');
-}
-''');
-    _setCaretLocation();
-    if (omitNew) {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_CONTAINER, '''
-import 'package:flutter/widgets.dart';
-main() {
-  /*caret*/Container(child: new Text('a'));
-}
-''');
-    } else {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_CONTAINER, '''
-import 'package:flutter/widgets.dart';
-main() {
-  /*caret*/new Center(child: new Text('a'));
-}
-''');
-    }
-  }
-
-  test_flutterWrapPadding_BAD_onPadding() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return /*caret*/new Padding();
-  }
-}
-''');
-    _setCaretLocation();
-    await assertNoAssist(DartAssistKind.FLUTTER_WRAP_PADDING);
-  }
-
-  test_flutterWrapPadding_OK() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return /*caret*/new Container();
-  }
-}
-''');
-    _setCaretLocation();
-    if (omitNew) {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_PADDING, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return /*caret*/Padding(
-      padding: const EdgeInsets.all(8.0),
-      child: new Container(),
-    );
-  }
-}
-''');
-    } else {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_PADDING, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return /*caret*/new Padding(
-      padding: const EdgeInsets.all(8.0),
-      child: new Container(),
-    );
-  }
-}
-''');
-    }
-  }
-
-  test_flutterWrapRow_OK() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-
-class FakeFlutter {
-  main() {
-    return new Column(children: [
-      new Text('aaa'),
-// start
-      new Text('bbb'),
-      new Text('ccc'),
-// end
-      new Text('ddd'),
-    ]);
-  }
-}
-''');
-    _setStartEndSelection();
-    if (omitNew) {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_ROW, '''
-import 'package:flutter/widgets.dart';
-
-class FakeFlutter {
-  main() {
-    return new Column(children: [
-      new Text('aaa'),
-// start
-      Row(
-        children: <Widget>[
-          new Text('bbb'),
-          new Text('ccc'),
-        ],
-      ),
-// end
-      new Text('ddd'),
-    ]);
-  }
-}
-''');
-    } else {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_ROW, '''
-import 'package:flutter/widgets.dart';
-
-class FakeFlutter {
-  main() {
-    return new Column(children: [
-      new Text('aaa'),
-// start
-      new Row(
-        children: <Widget>[
-          new Text('bbb'),
-          new Text('ccc'),
-        ],
-      ),
-// end
-      new Text('ddd'),
-    ]);
-  }
-}
-''');
-    }
-  }
-
-  test_flutterWrapWidget_BAD_minimal() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-/*caret*/x(){}
-''');
-    _setCaretLocation();
-    await assertNoAssist(DartAssistKind.FLUTTER_WRAP_GENERIC);
-  }
-
-  test_flutterWrapWidget_BAD_multiLine() async {
-    verifyNoTestUnitErrors = false;
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-build() {
-  return new Container(
-    child: new Row(
-      children: [/*caret*/
-// start
-        new Transform(),
-        new Object(),
-        new AspectRatio(),
-// end
-      ],
-    ),
-  );
-}
-''');
-    _setCaretLocation();
-    await assertNoAssist(DartAssistKind.FLUTTER_WRAP_GENERIC);
-  }
-
-  test_flutterWrapWidget_BAD_singleLine() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-  var obj;
-// start
-    return new Row(children: [/*caret*/ new Container()]);
-// end
-  }
-}
-''');
-    _setCaretLocation();
-    await assertNoAssist(DartAssistKind.FLUTTER_WRAP_GENERIC);
-  }
-
-  test_flutterWrapWidget_OK_multiLine() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-build() {
-  return new Container(
-    child: new Row(
-// start
-      children: [/*caret*/
-        new Text('111'),
-        new Text('222'),
-        new Container(),
-      ],
-// end
-    ),
-  );
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_WRAP_GENERIC, '''
-import 'package:flutter/widgets.dart';
-build() {
-  return new Container(
-    child: new Row(
-// start
-      children: [
-        new widget(
-          children: [/*caret*/
-            new Text('111'),
-            new Text('222'),
-            new Container(),
-          ],
-        ),
-      ],
-// end
-    ),
-  );
-}
-''');
-  }
-
-  test_flutterWrapWidget_OK_multiLines() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return new Container(
-// start
-      child: new /*caret*/DefaultTextStyle(
-        child: new Row(
-          children: <Widget>[
-            new Container(
-            ),
-          ],
-        ),
-      ),
-// end
-    );
-  }
-}
-''');
-    _setCaretLocation();
-    if (omitNew) {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_GENERIC, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return new Container(
-// start
-      child: widget(
-        child: new /*caret*/DefaultTextStyle(
-          child: new Row(
-            children: <Widget>[
-              new Container(
-              ),
-            ],
-          ),
-        ),
-      ),
-// end
-    );
-  }
-}
-''');
-    } else {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_GENERIC, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return new Container(
-// start
-      child: new widget(
-        child: new /*caret*/DefaultTextStyle(
-          child: new Row(
-            children: <Widget>[
-              new Container(
-              ),
-            ],
-          ),
-        ),
-      ),
-// end
-    );
-  }
-}
-''');
-    }
-  }
-
-  test_flutterWrapWidget_OK_multiLines_eol2() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {\r
-  main() {\r
-    return new Container(\r
-// start\r
-      child: new /*caret*/DefaultTextStyle(\r
-        child: new Row(\r
-          children: <Widget>[\r
-            new Container(\r
-            ),\r
-          ],\r
-        ),\r
-      ),\r
-// end\r
-    );\r
-  }\r
-}\r
-''');
-    _setCaretLocation();
-    if (omitNew) {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_GENERIC, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {\r
-  main() {\r
-    return new Container(\r
-// start\r
-      child: widget(\r
-        child: new /*caret*/DefaultTextStyle(\r
-          child: new Row(\r
-            children: <Widget>[\r
-              new Container(\r
-              ),\r
-            ],\r
-          ),\r
-        ),\r
-      ),\r
-// end\r
-    );\r
-  }\r
-}\r
-''');
-    } else {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_GENERIC, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {\r
-  main() {\r
-    return new Container(\r
-// start\r
-      child: new widget(\r
-        child: new /*caret*/DefaultTextStyle(\r
-          child: new Row(\r
-            children: <Widget>[\r
-              new Container(\r
-              ),\r
-            ],\r
-          ),\r
-        ),\r
-      ),\r
-// end\r
-    );\r
-  }\r
-}\r
-''');
-    }
-  }
-
-  test_flutterWrapWidget_OK_prefixedIdentifier_identifier() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-
-abstract class Foo extends Widget {
-  Widget bar;
-}
-
-main(Foo foo) {
-  return foo./*caret*/bar;
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_WRAP_GENERIC, '''
-import 'package:flutter/widgets.dart';
-
-abstract class Foo extends Widget {
-  Widget bar;
-}
-
-main(Foo foo) {
-  return widget(child: foo./*caret*/bar);
-}
-''');
-  }
-
-  test_flutterWrapWidget_OK_prefixedIdentifier_prefix() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-
-abstract class Foo extends Widget {
-  Widget bar;
-}
-
-main(Foo foo) {
-  return /*caret*/foo.bar;
-}
-''');
-    _setCaretLocation();
-    await assertHasAssist(DartAssistKind.FLUTTER_WRAP_GENERIC, '''
-import 'package:flutter/widgets.dart';
-
-abstract class Foo extends Widget {
-  Widget bar;
-}
-
-main(Foo foo) {
-  return /*caret*/widget(child: foo.bar);
-}
-''');
-  }
-
-  test_flutterWrapWidget_OK_singleLine1() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-// start
-    return /*caret*/new Container();
-// end
-  }
-}
-''');
-    _setCaretLocation();
-    if (omitNew) {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_GENERIC, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-// start
-    return /*caret*/widget(child: new Container());
-// end
-  }
-}
-''');
-    } else {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_GENERIC, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-// start
-    return /*caret*/new widget(child: new Container());
-// end
-  }
-}
-''');
-    }
-  }
-
-  test_flutterWrapWidget_OK_singleLine2() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return new ClipRect./*caret*/rect();
-  }
-}
-''');
-    _setCaretLocation();
-    if (omitNew) {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_GENERIC, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return widget(child: new ClipRect./*caret*/rect());
-  }
-}
-''');
-    } else {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_GENERIC, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    return new widget(child: new ClipRect./*caret*/rect());
-  }
-}
-''');
-    }
-  }
-
-  test_flutterWrapWidget_OK_variable() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    var container = new Container();
-    return /*caret*/container;
-  }
-}
-''');
-    _setCaretLocation();
-    if (omitNew) {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_GENERIC, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    var container = new Container();
-    return /*caret*/widget(child: container);
-  }
-}
-''');
-    } else {
-      await assertHasAssist(DartAssistKind.FLUTTER_WRAP_GENERIC, '''
-import 'package:flutter/widgets.dart';
-class FakeFlutter {
-  main() {
-    var container = new Container();
-    return /*caret*/new widget(child: container);
-  }
-}
-''');
-    }
-  }
-
-  test_importAddShow_BAD_hasShow() async {
-    await resolveTestUnit('''
-import 'dart:math' show PI;
-main() {
-  PI;
-}
-''');
-    await assertNoAssistAt('import ', DartAssistKind.IMPORT_ADD_SHOW);
-  }
-
-  test_importAddShow_BAD_unresolvedUri() async {
-    verifyNoTestUnitErrors = false;
-    await resolveTestUnit('''
-import '/no/such/lib.dart';
-''');
-    await assertNoAssistAt('import ', DartAssistKind.IMPORT_ADD_SHOW);
-  }
-
-  test_importAddShow_BAD_unused() async {
-    await resolveTestUnit('''
-import 'dart:math';
-''');
-    await assertNoAssistAt('import ', DartAssistKind.IMPORT_ADD_SHOW);
-  }
-
-  test_importAddShow_OK_hasUnresolvedIdentifier() async {
-    await resolveTestUnit('''
-import 'dart:math';
-main(x) {
-  PI;
-  return x.foo();
-}
-''');
-    await assertHasAssistAt('import ', DartAssistKind.IMPORT_ADD_SHOW, '''
-import 'dart:math' show PI;
-main(x) {
-  PI;
-  return x.foo();
-}
-''');
-  }
-
-  test_importAddShow_OK_onDirective() async {
-    await resolveTestUnit('''
-import 'dart:math';
-main() {
-  PI;
-  E;
-  max(1, 2);
-}
-''');
-    await assertHasAssistAt('import ', DartAssistKind.IMPORT_ADD_SHOW, '''
-import 'dart:math' show E, PI, max;
-main() {
-  PI;
-  E;
-  max(1, 2);
-}
-''');
-  }
-
-  test_importAddShow_OK_onUri() async {
-    await resolveTestUnit('''
-import 'dart:math';
-main() {
-  PI;
-  E;
-  max(1, 2);
-}
-''');
-    await assertHasAssistAt('art:math', DartAssistKind.IMPORT_ADD_SHOW, '''
-import 'dart:math' show E, PI, max;
-main() {
-  PI;
-  E;
-  max(1, 2);
-}
-''');
-  }
-
-  test_introduceLocalTestedType_BAD_notBlock() async {
-    await resolveTestUnit('''
-main(p) {
-  if (p is String)
-    print('not a block');
-}
-''');
-    await assertNoAssistAt('if (p', DartAssistKind.INTRODUCE_LOCAL_CAST_TYPE);
-  }
-
-  test_introduceLocalTestedType_BAD_notIsExpression() async {
-    await resolveTestUnit('''
-main(p) {
-  if (p == null) {
-  }
-}
-''');
-    await assertNoAssistAt('if (p', DartAssistKind.INTRODUCE_LOCAL_CAST_TYPE);
-  }
-
-  test_introduceLocalTestedType_BAD_notStatement() async {
-    await resolveTestUnit('''
-class C {
-  bool b;
-  C(v) : b = v is int;
-}''');
-    await assertNoAssistAt('is int', DartAssistKind.INTRODUCE_LOCAL_CAST_TYPE);
-  }
-
-  test_introduceLocalTestedType_OK_if_is() async {
-    await resolveTestUnit('''
-class MyTypeName {}
-main(p) {
-  if (p is MyTypeName) {
-  }
-  p = null;
-}
-''');
-    String expected = '''
-class MyTypeName {}
-main(p) {
-  if (p is MyTypeName) {
-    MyTypeName myTypeName = p;
-  }
-  p = null;
-}
-''';
-    await assertHasAssistAt(
-        'is MyType', DartAssistKind.INTRODUCE_LOCAL_CAST_TYPE, expected);
-    _assertLinkedGroup(
-        change.linkedEditGroups[0],
-        ['myTypeName = '],
-        expectedSuggestions(LinkedEditSuggestionKind.VARIABLE,
-            ['myTypeName', 'typeName', 'name']));
-    // another good location
-    await assertHasAssistAt(
-        'if (p', DartAssistKind.INTRODUCE_LOCAL_CAST_TYPE, expected);
-  }
-
-  test_introduceLocalTestedType_OK_if_isNot() async {
-    await resolveTestUnit('''
-class MyTypeName {}
-main(p) {
-  if (p is! MyTypeName) {
-    return;
-  }
-}
-''');
-    String expected = '''
-class MyTypeName {}
-main(p) {
-  if (p is! MyTypeName) {
-    return;
-  }
-  MyTypeName myTypeName = p;
-}
-''';
-    await assertHasAssistAt(
-        'is! MyType', DartAssistKind.INTRODUCE_LOCAL_CAST_TYPE, expected);
-    _assertLinkedGroup(
-        change.linkedEditGroups[0],
-        ['myTypeName = '],
-        expectedSuggestions(LinkedEditSuggestionKind.VARIABLE,
-            ['myTypeName', 'typeName', 'name']));
-    // another good location
-    await assertHasAssistAt(
-        'if (p', DartAssistKind.INTRODUCE_LOCAL_CAST_TYPE, expected);
-  }
-
-  test_introduceLocalTestedType_OK_while() async {
-    await resolveTestUnit('''
-main(p) {
-  while (p is String) {
-  }
-  p = null;
-}
-''');
-    String expected = '''
-main(p) {
-  while (p is String) {
-    String s = p;
-  }
-  p = null;
-}
-''';
-    await assertHasAssistAt(
-        'is String', DartAssistKind.INTRODUCE_LOCAL_CAST_TYPE, expected);
-    await assertHasAssistAt(
-        'while (p', DartAssistKind.INTRODUCE_LOCAL_CAST_TYPE, expected);
-  }
-
-  test_invalidSelection() async {
-    await resolveTestUnit('');
-    offset = -1;
-    length = 0;
-    List<Assist> assists = await _computeAssists();
-    expect(assists, isEmpty);
-  }
-
-  test_invertIfStatement_blocks() async {
-    await resolveTestUnit('''
-main() {
-  if (true) {
-    0;
-  } else {
-    1;
-  }
-}
-''');
-    await assertHasAssistAt('if (', DartAssistKind.INVERT_IF_STATEMENT, '''
-main() {
-  if (false) {
-    1;
-  } else {
-    0;
-  }
-}
-''');
-  }
-
-  test_invertIfStatement_statements() async {
-    await resolveTestUnit('''
-main() {
-  if (true)
-    0;
-  else
-    1;
-}
-''');
-    await assertHasAssistAt('if (', DartAssistKind.INVERT_IF_STATEMENT, '''
-main() {
-  if (false)
-    1;
-  else
-    0;
-}
-''');
-  }
-
-  test_joinIfStatementInner_BAD_innerNotIf() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    print(0);
-  }
-}
-''');
-    await assertNoAssistAt('if (1 ==', DartAssistKind.JOIN_IF_WITH_INNER);
-  }
-
-  test_joinIfStatementInner_BAD_innerWithElse() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2) {
-      print(0);
-    } else {
-      print(1);
-    }
-  }
-}
-''');
-    await assertNoAssistAt('if (1 ==', DartAssistKind.JOIN_IF_WITH_INNER);
-  }
-
-  test_joinIfStatementInner_BAD_statementAfterInner() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2) {
-      print(2);
-    }
-    print(1);
-  }
-}
-''');
-    await assertNoAssistAt('if (1 ==', DartAssistKind.JOIN_IF_WITH_INNER);
-  }
-
-  test_joinIfStatementInner_BAD_statementBeforeInner() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    print(1);
-    if (2 == 2) {
-      print(2);
-    }
-  }
-}
-''');
-    await assertNoAssistAt('if (1 ==', DartAssistKind.JOIN_IF_WITH_INNER);
-  }
-
-  test_joinIfStatementInner_BAD_targetNotIf() async {
-    await resolveTestUnit('''
-main() {
-  print(0);
-}
-''');
-    await assertNoAssistAt('print', DartAssistKind.JOIN_IF_WITH_INNER);
-  }
-
-  test_joinIfStatementInner_BAD_targetWithElse() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2) {
-      print(0);
-    }
-  } else {
-    print(1);
-  }
-}
-''');
-    await assertNoAssistAt('if (1 ==', DartAssistKind.JOIN_IF_WITH_INNER);
-  }
-
-  test_joinIfStatementInner_OK_conditionAndOr() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2 || 3 == 3) {
-      print(0);
-    }
-  }
-}
-''');
-    await assertHasAssistAt('if (1 ==', DartAssistKind.JOIN_IF_WITH_INNER, '''
-main() {
-  if (1 == 1 && (2 == 2 || 3 == 3)) {
-    print(0);
-  }
-}
-''');
-  }
-
-  test_joinIfStatementInner_OK_conditionInvocation() async {
-    await resolveTestUnit('''
-main() {
-  if (isCheck()) {
-    if (2 == 2) {
-      print(0);
-    }
-  }
-}
-bool isCheck() => false;
-''');
-    await assertHasAssistAt(
-        'if (isCheck', DartAssistKind.JOIN_IF_WITH_INNER, '''
-main() {
-  if (isCheck() && 2 == 2) {
-    print(0);
-  }
-}
-bool isCheck() => false;
-''');
-  }
-
-  test_joinIfStatementInner_OK_conditionOrAnd() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1 || 2 == 2) {
-    if (3 == 3) {
-      print(0);
-    }
-  }
-}
-''');
-    await assertHasAssistAt('if (1 ==', DartAssistKind.JOIN_IF_WITH_INNER, '''
-main() {
-  if ((1 == 1 || 2 == 2) && 3 == 3) {
-    print(0);
-  }
-}
-''');
-  }
-
-  test_joinIfStatementInner_OK_onCondition() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2) {
-      print(0);
-    }
-  }
-}
-''');
-    await assertHasAssistAt('1 ==', DartAssistKind.JOIN_IF_WITH_INNER, '''
-main() {
-  if (1 == 1 && 2 == 2) {
-    print(0);
-  }
-}
-''');
-  }
-
-  test_joinIfStatementInner_OK_simpleConditions_block_block() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2) {
-      print(0);
-    }
-  }
-}
-''');
-    await assertHasAssistAt('if (1 ==', DartAssistKind.JOIN_IF_WITH_INNER, '''
-main() {
-  if (1 == 1 && 2 == 2) {
-    print(0);
-  }
-}
-''');
-  }
-
-  test_joinIfStatementInner_OK_simpleConditions_block_single() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2)
-      print(0);
-  }
-}
-''');
-    await assertHasAssistAt('if (1 ==', DartAssistKind.JOIN_IF_WITH_INNER, '''
-main() {
-  if (1 == 1 && 2 == 2) {
-    print(0);
-  }
-}
-''');
-  }
-
-  test_joinIfStatementInner_OK_simpleConditions_single_blockMulti() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2) {
-      print(1);
-      print(2);
-      print(3);
-    }
-  }
-}
-''');
-    await assertHasAssistAt('if (1 ==', DartAssistKind.JOIN_IF_WITH_INNER, '''
-main() {
-  if (1 == 1 && 2 == 2) {
-    print(1);
-    print(2);
-    print(3);
-  }
-}
-''');
-  }
-
-  test_joinIfStatementInner_OK_simpleConditions_single_blockOne() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1)
-    if (2 == 2) {
-      print(0);
-    }
-}
-''');
-    await assertHasAssistAt('if (1 ==', DartAssistKind.JOIN_IF_WITH_INNER, '''
-main() {
-  if (1 == 1 && 2 == 2) {
-    print(0);
-  }
-}
-''');
-  }
-
-  test_joinIfStatementOuter_BAD_outerNotIf() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    print(0);
-  }
-}
-''');
-    await assertNoAssistAt('if (1 == 1', DartAssistKind.JOIN_IF_WITH_OUTER);
-  }
-
-  test_joinIfStatementOuter_BAD_outerWithElse() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2) {
-      print(0);
-    }
-  } else {
-    print(1);
-  }
-}
-''');
-    await assertNoAssistAt('if (2 == 2', DartAssistKind.JOIN_IF_WITH_OUTER);
-  }
-
-  test_joinIfStatementOuter_BAD_statementAfterInner() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2) {
-      print(2);
-    }
-    print(1);
-  }
-}
-''');
-    await assertNoAssistAt('if (2 == 2', DartAssistKind.JOIN_IF_WITH_OUTER);
-  }
-
-  test_joinIfStatementOuter_BAD_statementBeforeInner() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    print(1);
-    if (2 == 2) {
-      print(2);
-    }
-  }
-}
-''');
-    await assertNoAssistAt('if (2 == 2', DartAssistKind.JOIN_IF_WITH_OUTER);
-  }
-
-  test_joinIfStatementOuter_BAD_targetNotIf() async {
-    await resolveTestUnit('''
-main() {
-  print(0);
-}
-''');
-    await assertNoAssistAt('print', DartAssistKind.JOIN_IF_WITH_OUTER);
-  }
-
-  test_joinIfStatementOuter_BAD_targetWithElse() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2) {
-      print(0);
-    } else {
-      print(1);
-    }
-  }
-}
-''');
-    await assertNoAssistAt('if (2 == 2', DartAssistKind.JOIN_IF_WITH_OUTER);
-  }
-
-  test_joinIfStatementOuter_OK_conditionAndOr() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2 || 3 == 3) {
-      print(0);
-    }
-  }
-}
-''');
-    await assertHasAssistAt('if (2 ==', DartAssistKind.JOIN_IF_WITH_OUTER, '''
-main() {
-  if (1 == 1 && (2 == 2 || 3 == 3)) {
-    print(0);
-  }
-}
-''');
-  }
-
-  test_joinIfStatementOuter_OK_conditionInvocation() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (isCheck()) {
-      print(0);
-    }
-  }
-}
-bool isCheck() => false;
-''');
-    await assertHasAssistAt(
-        'if (isCheck', DartAssistKind.JOIN_IF_WITH_OUTER, '''
-main() {
-  if (1 == 1 && isCheck()) {
-    print(0);
-  }
-}
-bool isCheck() => false;
-''');
-  }
-
-  test_joinIfStatementOuter_OK_conditionOrAnd() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1 || 2 == 2) {
-    if (3 == 3) {
-      print(0);
-    }
-  }
-}
-''');
-    await assertHasAssistAt('if (3 == 3', DartAssistKind.JOIN_IF_WITH_OUTER, '''
-main() {
-  if ((1 == 1 || 2 == 2) && 3 == 3) {
-    print(0);
-  }
-}
-''');
-  }
-
-  test_joinIfStatementOuter_OK_onCondition() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2) {
-      print(0);
-    }
-  }
-}
-''');
-    await assertHasAssistAt('if (2 == 2', DartAssistKind.JOIN_IF_WITH_OUTER, '''
-main() {
-  if (1 == 1 && 2 == 2) {
-    print(0);
-  }
-}
-''');
-  }
-
-  test_joinIfStatementOuter_OK_simpleConditions_block_block() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2) {
-      print(0);
-    }
-  }
-}
-''');
-    await assertHasAssistAt('if (2 == 2', DartAssistKind.JOIN_IF_WITH_OUTER, '''
-main() {
-  if (1 == 1 && 2 == 2) {
-    print(0);
-  }
-}
-''');
-  }
-
-  test_joinIfStatementOuter_OK_simpleConditions_block_single() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2)
-      print(0);
-  }
-}
-''');
-    await assertHasAssistAt('if (2 == 2', DartAssistKind.JOIN_IF_WITH_OUTER, '''
-main() {
-  if (1 == 1 && 2 == 2) {
-    print(0);
-  }
-}
-''');
-  }
-
-  test_joinIfStatementOuter_OK_simpleConditions_single_blockMulti() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1) {
-    if (2 == 2) {
-      print(1);
-      print(2);
-      print(3);
-    }
-  }
-}
-''');
-    await assertHasAssistAt('if (2 == 2', DartAssistKind.JOIN_IF_WITH_OUTER, '''
-main() {
-  if (1 == 1 && 2 == 2) {
-    print(1);
-    print(2);
-    print(3);
-  }
-}
-''');
-  }
-
-  test_joinIfStatementOuter_OK_simpleConditions_single_blockOne() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1)
-    if (2 == 2) {
-      print(0);
-    }
-}
-''');
-    await assertHasAssistAt('if (2 == 2', DartAssistKind.JOIN_IF_WITH_OUTER, '''
-main() {
-  if (1 == 1 && 2 == 2) {
-    print(0);
-  }
-}
-''');
-  }
-
-  test_joinVariableDeclaration_onAssignment_BAD_hasInitializer() async {
-    await resolveTestUnit('''
-main() {
-  var v = 1;
-  v = 2;
-}
-''');
-    await assertNoAssistAt('v = 2', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onAssignment_BAD_notAdjacent() async {
-    await resolveTestUnit('''
-main() {
-  var v;
-  var bar;
-  v = 1;
-}
-''');
-    await assertNoAssistAt('v = 1', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onAssignment_BAD_notAssignment() async {
-    await resolveTestUnit('''
-main() {
-  var v;
-  v += 1;
-}
-''');
-    await assertNoAssistAt('v += 1', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onAssignment_BAD_notDeclaration() async {
-    await resolveTestUnit('''
-main(var v) {
-  v = 1;
-}
-''');
-    await assertNoAssistAt('v = 1', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onAssignment_BAD_notLeftArgument() async {
-    await resolveTestUnit('''
-main() {
-  var v;
-  1 + v; // marker
-}
-''');
-    await assertNoAssistAt(
-        'v; // marker', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onAssignment_BAD_notOneVariable() async {
-    await resolveTestUnit('''
-main() {
-  var v, v2;
-  v = 1;
-}
-''');
-    await assertNoAssistAt('v = 1', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onAssignment_BAD_notResolved() async {
-    verifyNoTestUnitErrors = false;
-    await resolveTestUnit('''
-main() {
-  var v;
-  x = 1;
-}
-''');
-    await assertNoAssistAt('x = 1', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onAssignment_BAD_notSameBlock() async {
-    await resolveTestUnit('''
-main() {
-  var v;
-  {
-    v = 1;
-  }
-}
-''');
-    await assertNoAssistAt('v = 1', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onAssignment_OK() async {
-    await resolveTestUnit('''
-main() {
-  var v;
-  v = 1;
-}
-''');
-    await assertHasAssistAt('v =', DartAssistKind.JOIN_VARIABLE_DECLARATION, '''
-main() {
-  var v = 1;
-}
-''');
-  }
-
-  test_joinVariableDeclaration_onDeclaration_BAD_hasInitializer() async {
-    await resolveTestUnit('''
-main() {
-  var v = 1;
-  v = 2;
-}
-''');
-    await assertNoAssistAt('v = 1', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onDeclaration_BAD_lastStatement() async {
-    await resolveTestUnit('''
-main() {
-  if (true)
-    var v;
-}
-''');
-    await assertNoAssistAt('v;', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onDeclaration_BAD_nextNotAssignmentExpression() async {
-    await resolveTestUnit('''
-main() {
-  var v;
-  42;
-}
-''');
-    await assertNoAssistAt('v;', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onDeclaration_BAD_nextNotExpressionStatement() async {
-    await resolveTestUnit('''
-main() {
-  var v;
-  if (true) return;
-}
-''');
-    await assertNoAssistAt('v;', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onDeclaration_BAD_nextNotPureAssignment() async {
-    await resolveTestUnit('''
-main() {
-  var v;
-  v += 1;
-}
-''');
-    await assertNoAssistAt('v;', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onDeclaration_BAD_notOneVariable() async {
-    await resolveTestUnit('''
-main() {
-  var v, v2;
-  v = 1;
-}
-''');
-    await assertNoAssistAt('v, ', DartAssistKind.JOIN_VARIABLE_DECLARATION);
-  }
-
-  test_joinVariableDeclaration_onDeclaration_OK_onName() async {
-    await resolveTestUnit('''
-main() {
-  var v;
-  v = 1;
-}
-''');
-    await assertHasAssistAt('v;', DartAssistKind.JOIN_VARIABLE_DECLARATION, '''
-main() {
-  var v = 1;
-}
-''');
-  }
-
-  test_joinVariableDeclaration_onDeclaration_OK_onType() async {
-    await resolveTestUnit('''
-main() {
-  int v;
-  v = 1;
-}
-''');
-    await assertHasAssistAt(
-        'int v', DartAssistKind.JOIN_VARIABLE_DECLARATION, '''
-main() {
-  int v = 1;
-}
-''');
-  }
-
-  test_joinVariableDeclaration_onDeclaration_OK_onVar() async {
-    await resolveTestUnit('''
-main() {
-  var v;
-  v = 1;
-}
-''');
-    await assertHasAssistAt(
-        'var v', DartAssistKind.JOIN_VARIABLE_DECLARATION, '''
-main() {
-  var v = 1;
-}
-''');
-  }
-
-  test_removeTypeAnnotation_classField_OK() async {
-    await resolveTestUnit('''
-class A {
-  int v = 1;
-}
-''');
-    await assertHasAssistAt('v = ', DartAssistKind.REMOVE_TYPE_ANNOTATION, '''
-class A {
-  var v = 1;
-}
-''');
-  }
-
-  test_removeTypeAnnotation_classField_OK_final() async {
-    await resolveTestUnit('''
-class A {
-  final int v = 1;
-}
-''');
-    await assertHasAssistAt('v = ', DartAssistKind.REMOVE_TYPE_ANNOTATION, '''
-class A {
-  final v = 1;
-}
-''');
-  }
-
-  test_removeTypeAnnotation_field_BAD_noInitializer() async {
-    await resolveTestUnit('''
-class A {
-  int v;
-}
-''');
-    await assertNoAssistAt('v;', DartAssistKind.REMOVE_TYPE_ANNOTATION);
-  }
-
-  test_removeTypeAnnotation_localVariable_BAD_noInitializer() async {
-    await resolveTestUnit('''
-main() {
-  int v;
-}
-''');
-    await assertNoAssistAt('v;', DartAssistKind.REMOVE_TYPE_ANNOTATION);
-  }
-
-  test_removeTypeAnnotation_localVariable_BAD_onInitializer() async {
-    await resolveTestUnit('''
-main() {
-  final int v = 1;
-}
-''');
-    await assertNoAssistAt('1;', DartAssistKind.REMOVE_TYPE_ANNOTATION);
-  }
-
-  test_removeTypeAnnotation_localVariable_OK() async {
-    await resolveTestUnit('''
-main() {
-  int a = 1, b = 2;
-}
-''');
-    await assertHasAssistAt('int ', DartAssistKind.REMOVE_TYPE_ANNOTATION, '''
-main() {
-  var a = 1, b = 2;
-}
-''');
-  }
-
-  test_removeTypeAnnotation_localVariable_OK_const() async {
-    await resolveTestUnit('''
-main() {
-  const int v = 1;
-}
-''');
-    await assertHasAssistAt('int ', DartAssistKind.REMOVE_TYPE_ANNOTATION, '''
-main() {
-  const v = 1;
-}
-''');
-  }
-
-  test_removeTypeAnnotation_localVariable_OK_final() async {
-    await resolveTestUnit('''
-main() {
-  final int v = 1;
-}
-''');
-    await assertHasAssistAt('int ', DartAssistKind.REMOVE_TYPE_ANNOTATION, '''
-main() {
-  final v = 1;
-}
-''');
-  }
-
-  test_removeTypeAnnotation_topLevelVariable_BAD_noInitializer() async {
-    verifyNoTestUnitErrors = false;
-    await resolveTestUnit('''
-int v;
-''');
-    await assertNoAssistAt('v;', DartAssistKind.REMOVE_TYPE_ANNOTATION);
-  }
-
-  test_removeTypeAnnotation_topLevelVariable_BAD_syntheticName() async {
-    verifyNoTestUnitErrors = false;
-    await resolveTestUnit('''
-MyType
-''');
-    await assertNoAssistAt('MyType', DartAssistKind.REMOVE_TYPE_ANNOTATION);
-  }
-
-  test_removeTypeAnnotation_topLevelVariable_OK() async {
-    await resolveTestUnit('''
-int V = 1;
-''');
-    await assertHasAssistAt('int ', DartAssistKind.REMOVE_TYPE_ANNOTATION, '''
-var V = 1;
-''');
-  }
-
-  test_removeTypeAnnotation_topLevelVariable_OK_final() async {
-    await resolveTestUnit('''
-final int V = 1;
-''');
-    await assertHasAssistAt('int ', DartAssistKind.REMOVE_TYPE_ANNOTATION, '''
-final V = 1;
-''');
-  }
-
-  test_replaceConditionalWithIfElse_BAD_noEnclosingStatement() async {
-    await resolveTestUnit('''
-var v = true ? 111 : 222;
-''');
-    await assertNoAssistAt(
-        '? 111', DartAssistKind.REPLACE_CONDITIONAL_WITH_IF_ELSE);
-  }
-
-  test_replaceConditionalWithIfElse_BAD_notConditional() async {
-    await resolveTestUnit('''
-main() {
-  var v = 42;
-}
-''');
-    await assertNoAssistAt(
-        'v = 42', DartAssistKind.REPLACE_CONDITIONAL_WITH_IF_ELSE);
-  }
-
-  test_replaceConditionalWithIfElse_OK_assignment() async {
-    await resolveTestUnit('''
-main() {
-  var v;
-  v = true ? 111 : 222;
-}
-''');
-    // on conditional
-    await assertHasAssistAt(
-        '11 :', DartAssistKind.REPLACE_CONDITIONAL_WITH_IF_ELSE, '''
-main() {
-  var v;
-  if (true) {
-    v = 111;
-  } else {
-    v = 222;
-  }
-}
-''');
-    // on variable
-    await assertHasAssistAt(
-        'v =', DartAssistKind.REPLACE_CONDITIONAL_WITH_IF_ELSE, '''
-main() {
-  var v;
-  if (true) {
-    v = 111;
-  } else {
-    v = 222;
-  }
-}
-''');
-  }
-
-  test_replaceConditionalWithIfElse_OK_return() async {
-    await resolveTestUnit('''
-main() {
-  return true ? 111 : 222;
-}
-''');
-    await assertHasAssistAt(
-        'return ', DartAssistKind.REPLACE_CONDITIONAL_WITH_IF_ELSE, '''
-main() {
-  if (true) {
-    return 111;
-  } else {
-    return 222;
-  }
-}
-''');
-  }
-
-  test_replaceConditionalWithIfElse_OK_variableDeclaration() async {
-    await resolveTestUnit('''
-main() {
-  int a = 1, vvv = true ? 111 : 222, b = 2;
-}
-''');
-    await assertHasAssistAt(
-        '11 :', DartAssistKind.REPLACE_CONDITIONAL_WITH_IF_ELSE, '''
-main() {
-  int a = 1, vvv, b = 2;
-  if (true) {
-    vvv = 111;
-  } else {
-    vvv = 222;
-  }
-}
-''');
-  }
-
-  test_replaceIfElseWithConditional_BAD_expressionVsReturn() async {
-    await resolveTestUnit('''
-main() {
-  if (true) {
-    print(42);
-  } else {
-    return;
-  }
-}
-''');
-    await assertNoAssistAt(
-        'else', DartAssistKind.REPLACE_IF_ELSE_WITH_CONDITIONAL);
-  }
-
-  test_replaceIfElseWithConditional_BAD_notIfStatement() async {
-    await resolveTestUnit('''
-main() {
-  print(0);
-}
-''');
-    await assertNoAssistAt(
-        'print', DartAssistKind.REPLACE_IF_ELSE_WITH_CONDITIONAL);
-  }
-
-  test_replaceIfElseWithConditional_BAD_notSingleStatement() async {
-    await resolveTestUnit('''
-main() {
-  int vvv;
-  if (true) {
-    print(0);
-    vvv = 111;
-  } else {
-    print(0);
-    vvv = 222;
-  }
-}
-''');
-    await assertNoAssistAt(
-        'if (true)', DartAssistKind.REPLACE_IF_ELSE_WITH_CONDITIONAL);
-  }
-
-  test_replaceIfElseWithConditional_OK_assignment() async {
-    await resolveTestUnit('''
-main() {
-  int vvv;
-  if (true) {
-    vvv = 111;
-  } else {
-    vvv = 222;
-  }
-}
-''');
-    await assertHasAssistAt(
-        'if (true)', DartAssistKind.REPLACE_IF_ELSE_WITH_CONDITIONAL, '''
-main() {
-  int vvv;
-  vvv = true ? 111 : 222;
-}
-''');
-  }
-
-  test_replaceIfElseWithConditional_OK_return() async {
-    await resolveTestUnit('''
-main() {
-  if (true) {
-    return 111;
-  } else {
-    return 222;
-  }
-}
-''');
-    await assertHasAssistAt(
-        'if (true)', DartAssistKind.REPLACE_IF_ELSE_WITH_CONDITIONAL, '''
-main() {
-  return true ? 111 : 222;
-}
-''');
-  }
-
-  test_splitAndCondition_BAD_hasElse() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1 && 2 == 2) {
-    print(1);
-  } else {
-    print(2);
-  }
-}
-''');
-    await assertNoAssistAt('&& 2', DartAssistKind.SPLIT_AND_CONDITION);
-  }
-
-  test_splitAndCondition_BAD_notAnd() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1 || 2 == 2) {
-    print(0);
-  }
-}
-''');
-    await assertNoAssistAt('|| 2', DartAssistKind.SPLIT_AND_CONDITION);
-  }
-
-  test_splitAndCondition_BAD_notPartOfIf() async {
-    await resolveTestUnit('''
-main() {
-  print(1 == 1 && 2 == 2);
-}
-''');
-    await assertNoAssistAt('&& 2', DartAssistKind.SPLIT_AND_CONDITION);
-  }
-
-  test_splitAndCondition_BAD_notTopLevelAnd() async {
-    await resolveTestUnit('''
-main() {
-  if (true || (1 == 1 && 2 == 2)) {
-    print(0);
-  }
-  if (true && (3 == 3 && 4 == 4)) {
-    print(0);
-  }
-}
-''');
-    await assertNoAssistAt('&& 2', DartAssistKind.SPLIT_AND_CONDITION);
-    await assertNoAssistAt('&& 4', DartAssistKind.SPLIT_AND_CONDITION);
-  }
-
-  test_splitAndCondition_OK_innerAndExpression() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1 && 2 == 2 && 3 == 3) {
-    print(0);
-  }
-}
-''');
-    await assertHasAssistAt('&& 2 == 2', DartAssistKind.SPLIT_AND_CONDITION, '''
-main() {
-  if (1 == 1) {
-    if (2 == 2 && 3 == 3) {
-      print(0);
-    }
-  }
-}
-''');
-  }
-
-  test_splitAndCondition_OK_thenBlock() async {
-    await resolveTestUnit('''
-main() {
-  if (true && false) {
-    print(0);
-    if (3 == 3) {
-      print(1);
-    }
-  }
-}
-''');
-    await assertHasAssistAt('&& false', DartAssistKind.SPLIT_AND_CONDITION, '''
-main() {
-  if (true) {
-    if (false) {
-      print(0);
-      if (3 == 3) {
-        print(1);
-      }
-    }
-  }
-}
-''');
-  }
-
-  test_splitAndCondition_OK_thenStatement() async {
-    await resolveTestUnit('''
-main() {
-  if (true && false)
-    print(0);
-}
-''');
-    await assertHasAssistAt('&& false', DartAssistKind.SPLIT_AND_CONDITION, '''
-main() {
-  if (true)
-    if (false)
-      print(0);
-}
-''');
-  }
-
-  test_splitAndCondition_wrong() async {
-    await resolveTestUnit('''
-main() {
-  if (1 == 1 && 2 == 2) {
-    print(0);
-  }
-  print(3 == 3 && 4 == 4);
-}
-''');
-    // not binary expression
-    await assertNoAssistAt('main() {', DartAssistKind.SPLIT_AND_CONDITION);
-    // selection is not empty and includes more than just operator
-    {
-      length = 5;
-      await assertNoAssistAt('&& 2 == 2', DartAssistKind.SPLIT_AND_CONDITION);
-    }
-  }
-
-  test_splitVariableDeclaration_BAD_notOneVariable() async {
-    await resolveTestUnit('''
-main() {
-  var v = 1, v2;
-}
-''');
-    await assertNoAssistAt('v = 1', DartAssistKind.SPLIT_VARIABLE_DECLARATION);
-  }
-
-  test_splitVariableDeclaration_OK_onName() async {
-    await resolveTestUnit('''
-main() {
-  var v = 1;
-}
-''');
-    await assertHasAssistAt(
-        'v =', DartAssistKind.SPLIT_VARIABLE_DECLARATION, '''
-main() {
-  var v;
-  v = 1;
-}
-''');
-  }
-
-  test_splitVariableDeclaration_OK_onType() async {
-    await resolveTestUnit('''
-main() {
-  int v = 1;
-}
-''');
-    await assertHasAssistAt(
-        'int ', DartAssistKind.SPLIT_VARIABLE_DECLARATION, '''
-main() {
-  int v;
-  v = 1;
-}
-''');
-  }
-
-  test_splitVariableDeclaration_OK_onVar() async {
-    await resolveTestUnit('''
-main() {
-  var v = 1;
-}
-''');
-    await assertHasAssistAt(
-        'var ', DartAssistKind.SPLIT_VARIABLE_DECLARATION, '''
-main() {
-  var v;
-  v = 1;
-}
-''');
-  }
-
-  test_surroundWith_block() async {
-    await resolveTestUnit('''
-main() {
-// start
-  print(0);
-  print(1);
-// end
-}
-''');
-    _setStartEndSelection();
-    await assertHasAssist(DartAssistKind.SURROUND_WITH_BLOCK, '''
-main() {
-// start
-  {
-    print(0);
-    print(1);
-  }
-// end
-}
-''');
-  }
-
-  test_surroundWith_doWhile() async {
-    await resolveTestUnit('''
-main() {
-// start
-  print(0);
-  print(1);
-// end
-}
-''');
-    _setStartEndSelection();
-    await assertHasAssist(DartAssistKind.SURROUND_WITH_DO_WHILE, '''
-main() {
-// start
-  do {
-    print(0);
-    print(1);
-  } while (condition);
-// end
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['condition);']);
-    _assertExitPosition(after: 'condition);');
-  }
-
-  test_surroundWith_for() async {
-    await resolveTestUnit('''
-main() {
-// start
-  print(0);
-  print(1);
-// end
-}
-''');
-    _setStartEndSelection();
-    await assertHasAssist(DartAssistKind.SURROUND_WITH_FOR, '''
-main() {
-// start
-  for (var v = init; condition; increment) {
-    print(0);
-    print(1);
-  }
-// end
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['v =']);
-    _assertLinkedGroup(change.linkedEditGroups[1], ['init;']);
-    _assertLinkedGroup(change.linkedEditGroups[2], ['condition;']);
-    _assertLinkedGroup(change.linkedEditGroups[3], ['increment']);
-    _assertExitPosition(after: '  }');
-  }
-
-  test_surroundWith_forIn() async {
-    await resolveTestUnit('''
-main() {
-// start
-  print(0);
-  print(1);
-// end
-}
-''');
-    _setStartEndSelection();
-    await assertHasAssist(DartAssistKind.SURROUND_WITH_FOR_IN, '''
-main() {
-// start
-  for (var item in iterable) {
-    print(0);
-    print(1);
-  }
-// end
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['item']);
-    _assertLinkedGroup(change.linkedEditGroups[1], ['iterable']);
-    _assertExitPosition(after: '  }');
-  }
-
-  test_surroundWith_if() async {
-    await resolveTestUnit('''
-main() {
-// start
-  print(0);
-  print(1);
-// end
-}
-''');
-    _setStartEndSelection();
-    await assertHasAssist(DartAssistKind.SURROUND_WITH_IF, '''
-main() {
-// start
-  if (condition) {
-    print(0);
-    print(1);
-  }
-// end
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['condition']);
-    _assertExitPosition(after: '  }');
-  }
-
-  test_surroundWith_tryCatch() async {
-    await resolveTestUnit('''
-main() {
-// start
-  print(0);
-  print(1);
-// end
-}
-''');
-    _setStartEndSelection();
-    await assertHasAssist(DartAssistKind.SURROUND_WITH_TRY_CATCH, '''
-main() {
-// start
-  try {
-    print(0);
-    print(1);
-  } on Exception catch (e) {
-    // TODO
-  }
-// end
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['Exception']);
-    _assertLinkedGroup(change.linkedEditGroups[1], ['e) {']);
-    _assertLinkedGroup(change.linkedEditGroups[2], ['// TODO']);
-    _assertExitPosition(after: '// TODO');
-  }
-
-  test_surroundWith_tryFinally() async {
-    await resolveTestUnit('''
-main() {
-// start
-  print(0);
-  print(1);
-// end
-}
-''');
-    _setStartEndSelection();
-    await assertHasAssist(DartAssistKind.SURROUND_WITH_TRY_FINALLY, '''
-main() {
-// start
-  try {
-    print(0);
-    print(1);
-  } finally {
-    // TODO
-  }
-// end
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['// TODO']);
-    _assertExitPosition(after: '// TODO');
-  }
-
-  test_surroundWith_while() async {
-    await resolveTestUnit('''
-main() {
-// start
-  print(0);
-  print(1);
-// end
-}
-''');
-    _setStartEndSelection();
-    await assertHasAssist(DartAssistKind.SURROUND_WITH_WHILE, '''
-main() {
-// start
-  while (condition) {
-    print(0);
-    print(1);
-  }
-// end
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['condition']);
-    _assertExitPosition(after: '  }');
-  }
-
-  void _assertExitPosition({String before, String after}) {
-    Position exitPosition = change.selection;
-    expect(exitPosition, isNotNull);
-    expect(exitPosition.file, testFile);
-    if (before != null) {
-      expect(exitPosition.offset, resultCode.indexOf(before));
-    } else if (after != null) {
-      expect(exitPosition.offset, resultCode.indexOf(after) + after.length);
-    } else {
-      fail("One of 'before' or 'after' expected.");
-    }
-  }
-
-  /**
-   * Computes assists and verifies that there is an assist of the given kind.
-   */
-  Future<Assist> _assertHasAssist(AssistKind kind) async {
-    List<Assist> assists = await _computeAssists();
-    for (Assist assist in assists) {
-      if (assist.kind == kind) {
-        return assist;
-      }
-    }
-    fail('Expected to find assist $kind in\n${assists.join('\n')}');
-  }
-
-  void _assertLinkedGroup(LinkedEditGroup group, List<String> expectedStrings,
-      [List<LinkedEditSuggestion> expectedSuggestions]) {
-    List<Position> expectedPositions = _findResultPositions(expectedStrings);
-    expect(group.positions, unorderedEquals(expectedPositions));
-    if (expectedSuggestions != null) {
-      expect(group.suggestions, unorderedEquals(expectedSuggestions));
-    }
-  }
-
-  Future<List<Assist>> _computeAssists() async {
-    CompilationUnitElement testUnitElement =
-        resolutionMap.elementDeclaredByCompilationUnit(testUnit);
-    DartAssistContext assistContext;
-    assistContext = new _DartAssistContextForValues(
-        testUnitElement.source, offset, length, driver, testUnit);
-    AssistProcessor processor = new AssistProcessor(assistContext);
-    return await processor.compute();
-  }
-
-  List<Position> _findResultPositions(List<String> searchStrings) {
-    List<Position> positions = <Position>[];
-    for (String search in searchStrings) {
-      int offset = resultCode.indexOf(search);
-      positions.add(new Position(testFile, offset));
-    }
-    return positions;
-  }
-
-  void _setCaretLocation() {
-    offset = findOffset('/*caret*/') + '/*caret*/'.length;
-    length = 0;
-  }
-
-  void _setStartEndSelection() {
-    offset = findOffset('// start\n') + '// start\n'.length;
-    length = findOffset('// end') - offset;
-  }
-}
-
-class _DartAssistContextForValues implements DartAssistContext {
-  @override
-  final Source source;
-
-  @override
-  final int selectionOffset;
-
-  @override
-  final int selectionLength;
-
-  @override
-  final AnalysisDriver analysisDriver;
-
-  @override
-  final CompilationUnit unit;
-
-  _DartAssistContextForValues(this.source, this.selectionOffset,
-      this.selectionLength, this.analysisDriver, this.unit);
-}
diff --git a/pkg/analysis_server/test/services/correction/fix_test.dart b/pkg/analysis_server/test/services/correction/fix_test.dart
deleted file mode 100644
index db6d6b7..0000000
--- a/pkg/analysis_server/test/services/correction/fix_test.dart
+++ /dev/null
@@ -1,8840 +0,0 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:async';
-
-import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
-import 'package:analysis_server/plugin/edit/fix/fix_dart.dart';
-import 'package:analysis_server/src/services/correction/fix.dart';
-import 'package:analysis_server/src/services/correction/fix_internal.dart';
-import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/ast/standard_resolution_map.dart';
-import 'package:analyzer/error/error.dart';
-import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/dart/analysis/ast_provider_driver.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
-import 'package:analyzer/src/error/codes.dart';
-import 'package:analyzer/src/generated/parser.dart';
-import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer/src/source/package_map_resolver.dart';
-import 'package:analyzer_plugin/protocol/protocol_common.dart'
-    hide AnalysisError;
-import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
-import 'package:test/test.dart';
-import 'package:test_reflective_loader/test_reflective_loader.dart';
-
-import '../../abstract_single_unit.dart';
-
-main() {
-  defineReflectiveSuite(() {
-    defineReflectiveTests(FixProcessorTest);
-    defineReflectiveTests(LintFixTest);
-  });
-}
-
-typedef bool AnalysisErrorFilter(AnalysisError error);
-
-/**
- * Base class for fix processor tests.
- */
-class BaseFixProcessorTest extends AbstractSingleUnitTest {
-  AnalysisErrorFilter errorFilter = (AnalysisError error) {
-    return error.errorCode != HintCode.UNUSED_CATCH_CLAUSE &&
-        error.errorCode != HintCode.UNUSED_CATCH_STACK &&
-        error.errorCode != HintCode.UNUSED_ELEMENT &&
-        error.errorCode != HintCode.UNUSED_FIELD &&
-        error.errorCode != HintCode.UNUSED_LOCAL_VARIABLE;
-  };
-
-  String myPkgLibPath = '/packages/my_pkg/lib';
-
-  String flutterPkgLibPath = '/packages/flutter/lib';
-
-  Fix fix;
-
-  SourceChange change;
-  String resultCode;
-
-  assert_undefinedFunction_create_returnType_bool(String lineWithTest) async {
-    await resolveTestUnit('''
-main() {
-  bool b = true;
-  $lineWithTest
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  bool b = true;
-  $lineWithTest
-}
-
-bool test() {
-}
-''');
-  }
-
-  assertHasFix(FixKind kind, String expected, {String target}) async {
-    AnalysisError error = await _findErrorToFix();
-    fix = await _assertHasFix(kind, error);
-    change = fix.change;
-
-    // apply to "file"
-    List<SourceFileEdit> fileEdits = change.edits;
-    expect(fileEdits, hasLength(1));
-
-    String fileContent = testCode;
-    if (target != null) {
-      expect(fileEdits.first.file, convertPath(target));
-      fileContent = getFile(target).readAsStringSync();
-    }
-
-    resultCode = SourceEdit.applySequence(fileContent, change.edits[0].edits);
-    // verify
-    expect(resultCode, expected);
-  }
-
-  assertHasFixAllFix(ErrorCode errorCode, FixKind kind, String expected,
-      {String target}) async {
-    AnalysisError error = await _findErrorToFixOfType(errorCode);
-    fix = await _assertHasFix(kind, error, hasFixAllFix: true);
-    change = fix.change;
-
-    // apply to "file"
-    List<SourceFileEdit> fileEdits = change.edits;
-    expect(fileEdits, hasLength(1));
-
-    String fileContent = testCode;
-    if (target != null) {
-      expect(fileEdits.first.file, convertPath(target));
-      fileContent = getFile(target).readAsStringSync();
-    }
-
-    resultCode = SourceEdit.applySequence(fileContent, change.edits[0].edits);
-    // verify
-    expect(resultCode, expected);
-  }
-
-  assertNoFix(FixKind kind) async {
-    AnalysisError error = await _findErrorToFix();
-    await _assertNoFix(kind, error);
-  }
-
-  List<LinkedEditSuggestion> expectedSuggestions(
-      LinkedEditSuggestionKind kind, List<String> values) {
-    return values.map((value) {
-      return new LinkedEditSuggestion(value, kind);
-    }).toList();
-  }
-
-  void setUp() {
-    super.setUp();
-    verifyNoTestUnitErrors = false;
-  }
-
-  /**
-   * Computes fixes and verifies that there is a fix of the given kind.
-   */
-  Future<Fix> _assertHasFix(FixKind kind, AnalysisError error,
-      {bool hasFixAllFix: false}) async {
-    if (hasFixAllFix && !kind.canBeAppliedTogether()) {
-      fail('Expected to find and return fix-all FixKind for $kind, '
-          'but kind.canBeAppliedTogether is ${kind.canBeAppliedTogether}');
-    }
-
-    // Compute the fixes for this AnalysisError
-    final List<Fix> fixes = await _computeFixes(error);
-
-    // If hasFixAllFix is false, assert that none of the fixes are a fix-all fix
-    if (!hasFixAllFix) {
-      for (Fix fix in fixes) {
-        if (fix.isFixAllFix()) {
-          fail('The boolean hasFixAllFix is false, but such a fix was found '
-              'in the computed set of fixes: $fixes, error: $error.');
-        }
-      }
-    }
-    // If hasFixAllFix is true, assert that there exists such a fix in the list
-    else {
-      bool foundFixAllFix = false;
-      for (Fix fix in fixes) {
-        if (fix.isFixAllFix()) {
-          foundFixAllFix = true;
-          break;
-        }
-      }
-      if (!foundFixAllFix) {
-        fail('The boolean hasFixAllFix is true, but no fix-all fix was found '
-            'in the computed set of fixes: $fixes, error: $error.');
-      }
-    }
-
-    Fix foundFix = null;
-    if (!hasFixAllFix) {
-      foundFix = fixes.firstWhere(
-        (fix) => fix.kind == kind && !fix.isFixAllFix(),
-        orElse: () => null,
-      );
-    } else {
-      foundFix = fixes.lastWhere(
-        (fix) => fix.kind == kind && fix.isFixAllFix(),
-        orElse: () => null,
-      );
-    }
-    if (foundFix == null) {
-      fail('Expected to find fix $kind in\n${fixes.join('\n')}, hasFixAllFix = '
-          '$hasFixAllFix');
-    }
-    return foundFix;
-  }
-
-  void _assertLinkedGroup(LinkedEditGroup group, List<String> expectedStrings,
-      [List<LinkedEditSuggestion> expectedSuggestions]) {
-    List<Position> expectedPositions = _findResultPositions(expectedStrings);
-    expect(group.positions, unorderedEquals(expectedPositions));
-    if (expectedSuggestions != null) {
-      expect(group.suggestions, unorderedEquals(expectedSuggestions));
-    }
-  }
-
-  Future _assertNoFix(FixKind kind, AnalysisError error) async {
-    List<Fix> fixes = await _computeFixes(error);
-    for (Fix fix in fixes) {
-      if (fix.kind == kind) {
-        fail('Unexpected fix $kind in\n${fixes.join('\n')}');
-      }
-    }
-  }
-
-  Future<List<AnalysisError>> _computeErrors() async {
-    return (await driver.getResult(convertPath(testFile))).errors;
-  }
-
-  /**
-   * Computes fixes for the given [error] in [testUnit].
-   */
-  Future<List<Fix>> _computeFixes(AnalysisError error) async {
-    DartFixContext fixContext = new _DartFixContextImpl(
-        resourceProvider,
-        driver,
-        new AstProviderForDriver(driver),
-        testUnit,
-        error,
-        await _computeErrors());
-    return await new DefaultFixContributor().internalComputeFixes(fixContext);
-  }
-
-  /**
-   * Configures the [SourceFactory] to have the `my_pkg` package in
-   * `/packages/my_pkg/lib` folder.
-   */
-  void _configureMyPkg(Map<String, String> pathToCode) {
-    pathToCode.forEach((path, code) {
-      newFile('$myPkgLibPath/$path', content: code);
-    });
-    // configure SourceFactory
-    Folder myPkgFolder = getFolder(myPkgLibPath);
-    UriResolver pkgResolver = new PackageMapUriResolver(resourceProvider, {
-      'my_pkg': [myPkgFolder]
-    });
-    SourceFactory sourceFactory = new SourceFactory(
-        [new DartUriResolver(sdk), pkgResolver, resourceResolver]);
-    driver.configure(sourceFactory: sourceFactory);
-    // force 'my_pkg' resolution
-    addSource(
-        '/tmp/other.dart',
-        pathToCode.keys
-            .map((path) => "import 'package:my_pkg/$path';")
-            .join('\n'));
-  }
-
-  Future<AnalysisError> _findErrorToFix() async {
-    List<AnalysisError> errors = await _computeErrors();
-    List<AnalysisError> filteredErrors = errors;
-    if (errorFilter != null) {
-      filteredErrors = filteredErrors.where(errorFilter).toList();
-    }
-    if (filteredErrors.length != 1) {
-      StringBuffer buffer = new StringBuffer();
-      buffer.writeln('Expected one error, found:');
-      for (AnalysisError error in errors) {
-        buffer.writeln('  $error [${error.errorCode}]');
-      }
-      fail(buffer.toString());
-    }
-    return filteredErrors[0];
-  }
-
-  Future<AnalysisError> _findErrorToFixOfType(ErrorCode errorCode) async {
-    List<AnalysisError> errors = await _computeErrors();
-    if (errorFilter != null) {
-      errors = errors.where(errorFilter).toList();
-    }
-    return errors.firstWhere((error) => errorCode == error.errorCode);
-  }
-
-  List<Position> _findResultPositions(List<String> searchStrings) {
-    List<Position> positions = <Position>[];
-    for (String search in searchStrings) {
-      int offset = resultCode.indexOf(search);
-      positions.add(new Position(testFile, offset));
-    }
-    return positions;
-  }
-}
-
-@reflectiveTest
-class FixProcessorTest extends BaseFixProcessorTest {
-  test_addAsync_asyncFor() async {
-    await resolveTestUnit('''
-import 'dart:async';
-void main(Stream<String> names) {
-  await for (String name in names) {
-    print(name);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.ADD_ASYNC, '''
-import 'dart:async';
-Future main(Stream<String> names) async {
-  await for (String name in names) {
-    print(name);
-  }
-}
-''');
-  }
-
-  test_addAsync_BAD_nullFunctionBody() async {
-    await resolveTestUnit('''
-var F = await;
-''');
-    await assertNoFix(DartFixKind.ADD_ASYNC);
-  }
-
-  test_addAsync_blockFunctionBody() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode ==
-          CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPE;
-    };
-    await resolveTestUnit('''
-foo() {}
-main() {
-  await foo();
-}
-''');
-    await assertHasFix(DartFixKind.ADD_ASYNC, '''
-foo() {}
-main() async {
-  await foo();
-}
-''');
-  }
-
-  test_addAsync_blockFunctionBody_getter() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode ==
-          CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPE;
-    };
-    await resolveTestUnit('''
-int get foo => null;
-int f() {
-  await foo;
-  return 1;
-}
-''');
-    await assertHasFix(DartFixKind.ADD_ASYNC, '''
-import \'dart:async\';
-
-int get foo => null;
-Future<int> f() async {
-  await foo;
-  return 1;
-}
-''');
-  }
-
-  test_addAsync_closure() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode == StaticWarningCode.UNDEFINED_IDENTIFIER_AWAIT;
-    };
-    await resolveTestUnit('''
-import 'dart:async';
-
-void takeFutureCallback(Future callback()) {}
-
-void doStuff() => takeFutureCallback(() => await 1);
-''');
-    await assertHasFix(DartFixKind.ADD_ASYNC, '''
-import 'dart:async';
-
-void takeFutureCallback(Future callback()) {}
-
-void doStuff() => takeFutureCallback(() async => await 1);
-''');
-  }
-
-  test_addAsync_expressionFunctionBody() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode == ParserErrorCode.UNEXPECTED_TOKEN;
-    };
-    await resolveTestUnit('''
-foo() {}
-main() => await foo();
-''');
-    await assertHasFix(DartFixKind.ADD_ASYNC, '''
-foo() {}
-main() async => await foo();
-''');
-  }
-
-  test_addAsync_returnFuture() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode ==
-          CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPE;
-    };
-    await resolveTestUnit('''
-foo() {}
-int main() {
-  await foo();
-  return 42;
-}
-''');
-    await assertHasFix(DartFixKind.ADD_ASYNC, '''
-import 'dart:async';
-
-foo() {}
-Future<int> main() async {
-  await foo();
-  return 42;
-}
-''');
-  }
-
-  test_addAsync_returnFuture_alreadyFuture() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode ==
-          CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPE;
-    };
-    await resolveTestUnit('''
-import 'dart:async';
-foo() {}
-Future<int> main() {
-  await foo();
-  return 42;
-}
-''');
-    await assertHasFix(DartFixKind.ADD_ASYNC, '''
-import 'dart:async';
-foo() {}
-Future<int> main() async {
-  await foo();
-  return 42;
-}
-''');
-  }
-
-  test_addAsync_returnFuture_dynamic() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode ==
-          CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPE;
-    };
-    await resolveTestUnit('''
-foo() {}
-dynamic main() {
-  await foo();
-  return 42;
-}
-''');
-    await assertHasFix(DartFixKind.ADD_ASYNC, '''
-foo() {}
-dynamic main() async {
-  await foo();
-  return 42;
-}
-''');
-  }
-
-  test_addAsync_returnFuture_noType() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode ==
-          CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPE;
-    };
-    await resolveTestUnit('''
-foo() {}
-main() {
-  await foo();
-  return 42;
-}
-''');
-    await assertHasFix(DartFixKind.ADD_ASYNC, '''
-foo() {}
-main() async {
-  await foo();
-  return 42;
-}
-''');
-  }
-
-  test_addExplicitCast_assignment_general() async {
-    await resolveTestUnit('''
-f(A a) {
-  B b;
-  b = a;
-}
-class A {}
-class B {}
-''');
-    await assertHasFix(DartFixKind.ADD_EXPLICIT_CAST, '''
-f(A a) {
-  B b;
-  b = a as B;
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_assignment_general_all() async {
-    await resolveTestUnit('''
-f(A a) {
-  B b, b2;
-  b = a;
-  b2 = a;
-}
-class A {}
-class B {}
-''');
-    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT,
-        DartFixKind.ADD_EXPLICIT_CAST, '''
-f(A a) {
-  B b, b2;
-  b = a as B;
-  b2 = a as B;
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_assignment_list() async {
-    await resolveTestUnit('''
-f(List<A> a) {
-  List<B> b;
-  b = a.where((e) => e is B).toList();
-}
-class A {}
-class B {}
-''');
-    await assertHasFix(DartFixKind.ADD_EXPLICIT_CAST, '''
-f(List<A> a) {
-  List<B> b;
-  b = a.where((e) => e is B).cast<B>().toList();
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_assignment_list_all() async {
-    await resolveTestUnit('''
-f(List<A> a) {
-  List<B> b, b2;
-  b = a.where((e) => e is B).toList();
-  b2 = a.where((e) => e is B).toList();
-}
-class A {}
-class B {}
-''');
-    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT,
-        DartFixKind.ADD_EXPLICIT_CAST, '''
-f(List<A> a) {
-  List<B> b, b2;
-  b = a.where((e) => e is B).cast<B>().toList();
-  b2 = a.where((e) => e is B).cast<B>().toList();
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_assignment_map() async {
-    await resolveTestUnit('''
-f(Map<A, B> a) {
-  Map<B, A> b;
-  b = a;
-}
-class A {}
-class B {}
-''');
-    await assertHasFix(DartFixKind.ADD_EXPLICIT_CAST, '''
-f(Map<A, B> a) {
-  Map<B, A> b;
-  b = a.cast<B, A>();
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_assignment_map_all() async {
-    await resolveTestUnit('''
-f(Map<A, B> a) {
-  Map<B, A> b, b2;
-  b = a;
-  b2 = a;
-}
-class A {}
-class B {}
-''');
-    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT,
-        DartFixKind.ADD_EXPLICIT_CAST, '''
-f(Map<A, B> a) {
-  Map<B, A> b, b2;
-  b = a.cast<B, A>();
-  b2 = a.cast<B, A>();
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_assignment_needsParens() async {
-    await resolveTestUnit('''
-f(A a) {
-  B b;
-  b = a..m();
-}
-class A {
-  int m() => 0;
-}
-class B {}
-''');
-    await assertHasFix(DartFixKind.ADD_EXPLICIT_CAST, '''
-f(A a) {
-  B b;
-  b = (a..m()) as B;
-}
-class A {
-  int m() => 0;
-}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_assignment_needsParens_all() async {
-    await resolveTestUnit('''
-f(A a) {
-  B b, b2;
-  b = a..m();
-  b2 = a..m();
-}
-class A {
-  int m() => 0;
-}
-class B {}
-''');
-    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT,
-        DartFixKind.ADD_EXPLICIT_CAST, '''
-f(A a) {
-  B b, b2;
-  b = (a..m()) as B;
-  b2 = (a..m()) as B;
-}
-class A {
-  int m() => 0;
-}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_assignment_set() async {
-    await resolveTestUnit('''
-f(Set<A> a) {
-  Set<B> b;
-  b = a;
-}
-class A {}
-class B {}
-''');
-    await assertHasFix(DartFixKind.ADD_EXPLICIT_CAST, '''
-f(Set<A> a) {
-  Set<B> b;
-  b = a.cast<B>();
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_assignment_set_all() async {
-    await resolveTestUnit('''
-f(Set<A> a) {
-  Set<B> b, b2;
-  b = a;
-  b2 = a;
-}
-class A {}
-class B {}
-''');
-    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT,
-        DartFixKind.ADD_EXPLICIT_CAST, '''
-f(Set<A> a) {
-  Set<B> b, b2;
-  b = a.cast<B>();
-  b2 = a.cast<B>();
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_BAD_as() async {
-    await resolveTestUnit('''
-f(A a) {
-  C c = a as B;
-}
-class A {}
-class B {}
-class C {}
-''');
-    await assertNoFix(DartFixKind.ADD_EXPLICIT_CAST);
-  }
-
-  test_addExplicitCast_BAD_cast() async {
-    await resolveTestUnit('''
-f(List<A> a) {
-  List<B> b = a.cast<A>();
-}
-class A {}
-class B {}
-''');
-    await assertNoFix(DartFixKind.ADD_EXPLICIT_CAST);
-  }
-
-  test_addExplicitCast_declaration_general() async {
-    await resolveTestUnit('''
-f(A a) {
-  B b = a;
-}
-class A {}
-class B {}
-''');
-    await assertHasFix(DartFixKind.ADD_EXPLICIT_CAST, '''
-f(A a) {
-  B b = a as B;
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_declaration_general_all() async {
-    await resolveTestUnit('''
-f(A a) {
-  B b = a;
-  B b2 = a;
-}
-class A {}
-class B {}
-''');
-    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT,
-        DartFixKind.ADD_EXPLICIT_CAST, '''
-f(A a) {
-  B b = a as B;
-  B b2 = a as B;
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_declaration_list() async {
-    await resolveTestUnit('''
-f(List<A> a) {
-  List<B> b = a.where((e) => e is B).toList();
-}
-class A {}
-class B {}
-''');
-    await assertHasFix(DartFixKind.ADD_EXPLICIT_CAST, '''
-f(List<A> a) {
-  List<B> b = a.where((e) => e is B).cast<B>().toList();
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_declaration_list_all() async {
-    await resolveTestUnit('''
-f(List<A> a) {
-  List<B> b = a.where((e) => e is B).toList();
-  List<B> b2 = a.where((e) => e is B).toList();
-}
-class A {}
-class B {}
-''');
-    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT,
-        DartFixKind.ADD_EXPLICIT_CAST, '''
-f(List<A> a) {
-  List<B> b = a.where((e) => e is B).cast<B>().toList();
-  List<B> b2 = a.where((e) => e is B).cast<B>().toList();
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_declaration_map() async {
-    await resolveTestUnit('''
-f(Map<A, B> a) {
-  Map<B, A> b = a;
-}
-class A {}
-class B {}
-''');
-    await assertHasFix(DartFixKind.ADD_EXPLICIT_CAST, '''
-f(Map<A, B> a) {
-  Map<B, A> b = a.cast<B, A>();
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_declaration_map_all() async {
-    await resolveTestUnit('''
-f(Map<A, B> a) {
-  Map<B, A> b = a;
-  Map<B, A> b2 = a;
-}
-class A {}
-class B {}
-''');
-    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT,
-        DartFixKind.ADD_EXPLICIT_CAST, '''
-f(Map<A, B> a) {
-  Map<B, A> b = a.cast<B, A>();
-  Map<B, A> b2 = a.cast<B, A>();
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_declaration_needsParens() async {
-    await resolveTestUnit('''
-f(A a) {
-  B b = a..m();
-}
-class A {
-  int m() => 0;
-}
-class B {}
-''');
-    await assertHasFix(DartFixKind.ADD_EXPLICIT_CAST, '''
-f(A a) {
-  B b = (a..m()) as B;
-}
-class A {
-  int m() => 0;
-}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_declaration_needsParens_all() async {
-    await resolveTestUnit('''
-f(A a) {
-  B b = a..m();
-  B b2 = a..m();
-}
-class A {
-  int m() => 0;
-}
-class B {}
-''');
-    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT,
-        DartFixKind.ADD_EXPLICIT_CAST, '''
-f(A a) {
-  B b = (a..m()) as B;
-  B b2 = (a..m()) as B;
-}
-class A {
-  int m() => 0;
-}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_declaration_set() async {
-    await resolveTestUnit('''
-f(Set<A> a) {
-  Set<B> b = a;
-}
-class A {}
-class B {}
-''');
-    await assertHasFix(DartFixKind.ADD_EXPLICIT_CAST, '''
-f(Set<A> a) {
-  Set<B> b = a.cast<B>();
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addExplicitCast_declaration_set_all() async {
-    await resolveTestUnit('''
-f(Set<A> a) {
-  Set<B> b = a;
-  Set<B> b2 = a;
-}
-class A {}
-class B {}
-''');
-    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT,
-        DartFixKind.ADD_EXPLICIT_CAST, '''
-f(Set<A> a) {
-  Set<B> b = a.cast<B>();
-  Set<B> b2 = a.cast<B>();
-}
-class A {}
-class B {}
-''');
-  }
-
-  test_addFieldFormalParameters_flutter() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-
-class MyWidget extends StatelessWidget {
-  final int a;
-  final int b;
-  final int c;
-
-  MyWidget({Key key, this.a}) : super(key: key);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_FIELD_FORMAL_PARAMETERS, '''
-import 'package:flutter/widgets.dart';
-
-class MyWidget extends StatelessWidget {
-  final int a;
-  final int b;
-  final int c;
-
-  MyWidget({Key key, this.a, this.b, this.c}) : super(key: key);
-}
-''');
-  }
-
-  test_addFieldFormalParameters_hasRequiredParameter() async {
-    await resolveTestUnit('''
-class Test {
-  final int a;
-  final int b;
-  final int c;
-  Test(this.a);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_FIELD_FORMAL_PARAMETERS, '''
-class Test {
-  final int a;
-  final int b;
-  final int c;
-  Test(this.a, this.b, this.c);
-}
-''');
-  }
-
-  test_addFieldFormalParameters_noParameters() async {
-    await resolveTestUnit('''
-class Test {
-  final int a;
-  final int b;
-  final int c;
-  Test();
-}
-''');
-    await assertHasFix(DartFixKind.ADD_FIELD_FORMAL_PARAMETERS, '''
-class Test {
-  final int a;
-  final int b;
-  final int c;
-  Test(this.a, this.b, this.c);
-}
-''');
-  }
-
-  test_addFieldFormalParameters_noRequiredParameter() async {
-    await resolveTestUnit('''
-class Test {
-  final int a;
-  final int b;
-  final int c;
-  Test([this.c]);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_FIELD_FORMAL_PARAMETERS, '''
-class Test {
-  final int a;
-  final int b;
-  final int c;
-  Test(this.a, this.b, [this.c]);
-}
-''');
-  }
-
-  test_addFieldFormalParameters_notAllFinal() async {
-    await resolveTestUnit('''
-class Test {
-  final int a;
-  int b;
-  final int c;
-  Test();
-}
-''');
-    await assertHasFix(DartFixKind.ADD_FIELD_FORMAL_PARAMETERS, '''
-class Test {
-  final int a;
-  int b;
-  final int c;
-  Test(this.a, this.c);
-}
-''');
-  }
-
-  test_addMissingParameter_constructor_named_required_hasOne() async {
-    await resolveTestUnit('''
-class A {
-  A.named(int a) {}
-}
-main() {
-  new A.named(1, 2.0);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_REQUIRED, '''
-class A {
-  A.named(int a, double d) {}
-}
-main() {
-  new A.named(1, 2.0);
-}
-''');
-  }
-
-  test_addMissingParameter_constructor_unnamed_required_hasOne() async {
-    await resolveTestUnit('''
-class A {
-  A(int a) {}
-}
-main() {
-  new A(1, 2.0);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_REQUIRED, '''
-class A {
-  A(int a, double d) {}
-}
-main() {
-  new A(1, 2.0);
-}
-''');
-  }
-
-  test_addMissingParameter_function_positional_hasNamed() async {
-    await resolveTestUnit('''
-test({int a}) {}
-main() {
-  test(1);
-}
-''');
-    await assertNoFix(DartFixKind.ADD_MISSING_PARAMETER_POSITIONAL);
-  }
-
-  test_addMissingParameter_function_positional_hasZero() async {
-    await resolveTestUnit('''
-test() {}
-main() {
-  test(1);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_POSITIONAL, '''
-test([int i]) {}
-main() {
-  test(1);
-}
-''');
-  }
-
-  test_addMissingParameter_function_required_hasNamed() async {
-    await resolveTestUnit('''
-test({int a}) {}
-main() {
-  test(1);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_REQUIRED, '''
-test(int i, {int a}) {}
-main() {
-  test(1);
-}
-''');
-  }
-
-  test_addMissingParameter_function_required_hasOne() async {
-    await resolveTestUnit('''
-test(int a) {}
-main() {
-  test(1, 2.0);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_REQUIRED, '''
-test(int a, double d) {}
-main() {
-  test(1, 2.0);
-}
-''');
-  }
-
-  test_addMissingParameter_function_required_hasZero() async {
-    await resolveTestUnit('''
-test() {}
-main() {
-  test(1);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_REQUIRED, '''
-test(int i) {}
-main() {
-  test(1);
-}
-''');
-  }
-
-  test_addMissingParameter_method_positional_hasOne() async {
-    await resolveTestUnit('''
-class A {
-  test(int a) {}
-  main() {
-    test(1, 2.0);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_POSITIONAL, '''
-class A {
-  test(int a, [double d]) {}
-  main() {
-    test(1, 2.0);
-  }
-}
-''');
-  }
-
-  test_addMissingParameter_method_required_hasOne() async {
-    await resolveTestUnit('''
-class A {
-  test(int a) {}
-  main() {
-    test(1, 2.0);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_REQUIRED, '''
-class A {
-  test(int a, double d) {}
-  main() {
-    test(1, 2.0);
-  }
-}
-''');
-  }
-
-  test_addMissingParameter_method_required_hasZero() async {
-    await resolveTestUnit('''
-class A {
-  test() {}
-  main() {
-    test(1);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_REQUIRED, '''
-class A {
-  test(int i) {}
-  main() {
-    test(1);
-  }
-}
-''');
-  }
-
-  test_addMissingParameterNamed_constructor_hasNamed() async {
-    await resolveTestUnit('''
-class A {
-  A(int a, {int b}) {}
-}
-
-main() {
-  new A(1, b: 2, named: 3.0);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_NAMED, '''
-class A {
-  A(int a, {int b, double named}) {}
-}
-
-main() {
-  new A(1, b: 2, named: 3.0);
-}
-''');
-  }
-
-  test_addMissingParameterNamed_constructor_hasRequired() async {
-    await resolveTestUnit('''
-class A {
-  A(int a) {}
-}
-
-main() {
-  new A(1, named: 2.0);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_NAMED, '''
-class A {
-  A(int a, {double named}) {}
-}
-
-main() {
-  new A(1, named: 2.0);
-}
-''');
-  }
-
-  test_addMissingParameterNamed_constructor_noParameters() async {
-    await resolveTestUnit('''
-class A {
-  A() {}
-}
-
-main() {
-  new A(named: 42);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_NAMED, '''
-class A {
-  A({int named}) {}
-}
-
-main() {
-  new A(named: 42);
-}
-''');
-  }
-
-  test_addMissingParameterNamed_constructor_noParameters_named() async {
-    await resolveTestUnit('''
-class A {
-  A.aaa() {}
-}
-
-main() {
-  new A.aaa(named: 42);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_NAMED, '''
-class A {
-  A.aaa({int named}) {}
-}
-
-main() {
-  new A.aaa(named: 42);
-}
-''');
-  }
-
-  test_addMissingParameterNamed_function_hasNamed() async {
-    await resolveTestUnit('''
-test(int a, {int b: 0}) {}
-
-main() {
-  test(1, b: 2, named: 3.0);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_NAMED, '''
-test(int a, {int b: 0, double named}) {}
-
-main() {
-  test(1, b: 2, named: 3.0);
-}
-''');
-  }
-
-  test_addMissingParameterNamed_function_hasRequired() async {
-    await resolveTestUnit('''
-test(int a) {}
-
-main() {
-  test(1, named: 2.0);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_NAMED, '''
-test(int a, {double named}) {}
-
-main() {
-  test(1, named: 2.0);
-}
-''');
-  }
-
-  test_addMissingParameterNamed_function_noParameters() async {
-    await resolveTestUnit('''
-test() {}
-
-main() {
-  test(named: 42);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_NAMED, '''
-test({int named}) {}
-
-main() {
-  test(named: 42);
-}
-''');
-  }
-
-  test_addMissingParameterNamed_method_hasNamed() async {
-    await resolveTestUnit('''
-class A {
-  test(int a, {int b: 0}) {}
-
-  main() {
-    test(1, b: 2, named: 3.0);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_NAMED, '''
-class A {
-  test(int a, {int b: 0, double named}) {}
-
-  main() {
-    test(1, b: 2, named: 3.0);
-  }
-}
-''');
-  }
-
-  test_addMissingParameterNamed_method_hasOptionalPositional() async {
-    await resolveTestUnit('''
-class A {
-  test(int a, [int b]) {}
-
-  main() {
-    test(1, 2, named: 3.0);
-  }
-}
-''');
-    await assertNoFix(DartFixKind.ADD_MISSING_PARAMETER_NAMED);
-  }
-
-  test_addMissingParameterNamed_method_hasRequired() async {
-    await resolveTestUnit('''
-class A {
-  test(int a) {}
-
-  main() {
-    test(1, named: 2.0);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_NAMED, '''
-class A {
-  test(int a, {double named}) {}
-
-  main() {
-    test(1, named: 2.0);
-  }
-}
-''');
-  }
-
-  test_addMissingParameterNamed_method_noParameters() async {
-    await resolveTestUnit('''
-class A {
-  test() {}
-
-  main() {
-    test(named: 42);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_PARAMETER_NAMED, '''
-class A {
-  test({int named}) {}
-
-  main() {
-    test(named: 42);
-  }
-}
-''');
-  }
-
-  test_addMissingRequiredArg_cons_flutter_children() async {
-    addFlutterPackage();
-    _addMetaPackageSource();
-
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-import 'package:meta/meta.dart';
-
-class MyWidget extends Widget {
-  MyWidget({@required List<Widget> children});
-}
-
-build() {
-  return new MyWidget();
-}
-''');
-
-    await assertHasFix(DartFixKind.ADD_MISSING_REQUIRED_ARGUMENT, '''
-import 'package:flutter/widgets.dart';
-import 'package:meta/meta.dart';
-
-class MyWidget extends Widget {
-  MyWidget({@required List<Widget> children});
-}
-
-build() {
-  return new MyWidget(children: <Widget>[],);
-}
-''');
-  }
-
-  test_addMissingRequiredArg_cons_flutter_hasTrailingComma() async {
-    addFlutterPackage();
-    _addMetaPackageSource();
-
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-import 'package:meta/meta.dart';
-
-class MyWidget extends Widget {
-  MyWidget({@required int a, @required int b});
-}
-
-build() {
-  return new MyWidget(a: 1,);
-}
-''');
-
-    await assertHasFix(DartFixKind.ADD_MISSING_REQUIRED_ARGUMENT, '''
-import 'package:flutter/widgets.dart';
-import 'package:meta/meta.dart';
-
-class MyWidget extends Widget {
-  MyWidget({@required int a, @required int b});
-}
-
-build() {
-  return new MyWidget(a: 1, b: null,);
-}
-''');
-  }
-
-  test_addMissingRequiredArg_cons_single() async {
-    _addMetaPackageSource();
-    addSource('/project/libA.dart', r'''
-library libA;
-import 'package:meta/meta.dart';
-
-class A {
-  A({@required int a}) {}
-}
-''');
-
-    await resolveTestUnit('''
-import 'libA.dart';
-
-main() {
-  A a = new A();
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_REQUIRED_ARGUMENT, '''
-import 'libA.dart';
-
-main() {
-  A a = new A(a: null);
-}
-''');
-  }
-
-  test_addMissingRequiredArg_cons_single_closure() async {
-    _addMetaPackageSource();
-
-    addSource('/project/libA.dart', r'''
-library libA;
-import 'package:meta/meta.dart';
-
-typedef void VoidCallback();
-
-class A {
-  A({@required VoidCallback onPressed}) {}
-}
-''');
-
-    await resolveTestUnit('''
-import 'libA.dart';
-
-main() {
-  A a = new A();
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_REQUIRED_ARGUMENT, '''
-import 'libA.dart';
-
-main() {
-  A a = new A(onPressed: () {});
-}
-''');
-  }
-
-  test_addMissingRequiredArg_cons_single_closure_2() async {
-    _addMetaPackageSource();
-
-    addSource('/project/libA.dart', r'''
-library libA;
-import 'package:meta/meta.dart';
-
-typedef void Callback(e);
-
-class A {
-  A({@required Callback callback}) {}
-}
-''');
-
-    await resolveTestUnit('''
-import 'libA.dart';
-
-main() {
-  A a = new A();
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_REQUIRED_ARGUMENT, '''
-import 'libA.dart';
-
-main() {
-  A a = new A(callback: (e) {});
-}
-''');
-  }
-
-  test_addMissingRequiredArg_cons_single_closure_3() async {
-    _addMetaPackageSource();
-
-    addSource('/project/libA.dart', r'''
-library libA;
-import 'package:meta/meta.dart';
-
-typedef void Callback(a,b,c);
-
-class A {
-  A({@required Callback callback}) {}
-}
-''');
-
-    await resolveTestUnit('''
-import 'libA.dart';
-
-main() {
-  A a = new A();
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_REQUIRED_ARGUMENT, '''
-import 'libA.dart';
-
-main() {
-  A a = new A(callback: (a, b, c) {});
-}
-''');
-  }
-
-  test_addMissingRequiredArg_cons_single_closure_4() async {
-    _addMetaPackageSource();
-
-    addSource('/project/libA.dart', r'''
-library libA;
-import 'package:meta/meta.dart';
-
-typedef int Callback(int a, String b,c);
-
-class A {
-  A({@required Callback callback}) {}
-}
-''');
-
-    await resolveTestUnit('''
-import 'libA.dart';
-
-main() {
-  A a = new A();
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_REQUIRED_ARGUMENT, '''
-import 'libA.dart';
-
-main() {
-  A a = new A(callback: (int a, String b, c) {});
-}
-''');
-  }
-
-  test_addMissingRequiredArg_cons_single_list() async {
-    _addMetaPackageSource();
-
-    addSource('/project/libA.dart', r'''
-library libA;
-import 'package:meta/meta.dart';
-
-class A {
-  A({@required List<String> names}) {}
-}
-''');
-
-    await resolveTestUnit('''
-import 'libA.dart';
-
-main() {
-  A a = new A();
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_REQUIRED_ARGUMENT, '''
-import 'libA.dart';
-
-main() {
-  A a = new A(names: <String>[]);
-}
-''');
-  }
-
-  test_addMissingRequiredArg_multiple() async {
-    _addMetaPackageSource();
-
-    await resolveTestUnit('''
-import 'package:meta/meta.dart';
-
-test({@required int a, @required int bcd}) {}
-main() {
-  test(a: 3);
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_REQUIRED_ARGUMENT, '''
-import 'package:meta/meta.dart';
-
-test({@required int a, @required int bcd}) {}
-main() {
-  test(a: 3, bcd: null);
-}
-''');
-  }
-
-  test_addMissingRequiredArg_multiple_2() async {
-    _addMetaPackageSource();
-
-    await resolveTestUnit('''
-import 'package:meta/meta.dart';
-
-test({@required int a, @required int bcd}) {}
-main() {
-  test();
-}
-''');
-
-    // For now we expect one error per missing arg (dartbug.com/28830).
-    List<AnalysisError> errors = await _computeErrors();
-    expect(errors, hasLength(2));
-
-    List<AnalysisError> filteredErrors = errors
-        .where((e) => e.message == "The parameter 'a' is required.")
-        .toList();
-    expect(filteredErrors, hasLength(1));
-
-    List<Fix> fixes = await _computeFixes(filteredErrors.first);
-
-    List<Fix> filteredFixes = fixes
-        .where((fix) => fix.change.message == "Add required argument 'a'")
-        .toList();
-    expect(filteredFixes, hasLength(1));
-    change = filteredFixes.first.change;
-    resultCode = SourceEdit.applySequence(testCode, change.edits[0].edits);
-    // verify
-    expect(resultCode, '''
-import 'package:meta/meta.dart';
-
-test({@required int a, @required int bcd}) {}
-main() {
-  test(a: null);
-}
-''');
-  }
-
-  test_addMissingRequiredArg_single() async {
-    _addMetaPackageSource();
-
-    await resolveTestUnit('''
-import 'package:meta/meta.dart';
-
-test({@required int abc}) {}
-main() {
-  test();
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_REQUIRED_ARGUMENT, '''
-import 'package:meta/meta.dart';
-
-test({@required int abc}) {}
-main() {
-  test(abc: null);
-}
-''');
-  }
-
-  test_addMissingRequiredArg_single_normal() async {
-    _addMetaPackageSource();
-
-    await resolveTestUnit('''
-import 'package:meta/meta.dart';
-
-test(String x, {@required int abc}) {}
-main() {
-  test("foo");
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_REQUIRED_ARGUMENT, '''
-import 'package:meta/meta.dart';
-
-test(String x, {@required int abc}) {}
-main() {
-  test("foo", abc: null);
-}
-''');
-  }
-
-  test_addMissingRequiredArg_single_with_details() async {
-    _addMetaPackageSource();
-
-    await resolveTestUnit('''
-import 'package:meta/meta.dart';
-
-test({@Required("Really who doesn't need an abc?") int abc}) {}
-main() {
-  test();
-}
-''');
-    await assertHasFix(DartFixKind.ADD_MISSING_REQUIRED_ARGUMENT, '''
-import 'package:meta/meta.dart';
-
-test({@Required("Really who doesn't need an abc?") int abc}) {}
-main() {
-  test(abc: null);
-}
-''');
-  }
-
-  test_addStatic_multipleFields() async {
-    await resolveTestUnit('''
-class C {
-  const int x = 0, y = 0;
-}
-''');
-    await assertHasFix(DartFixKind.ADD_STATIC, '''
-class C {
-  static const int x = 0, y = 0;
-}
-''');
-  }
-
-  test_addStatic_oneField() async {
-    await resolveTestUnit('''
-class C {
-  const int x = 0;
-}
-''');
-    await assertHasFix(DartFixKind.ADD_STATIC, '''
-class C {
-  static const int x = 0;
-}
-''');
-  }
-
-  test_boolean() async {
-    await resolveTestUnit('''
-main() {
-  boolean v;
-}
-''');
-    await assertHasFix(DartFixKind.REPLACE_BOOLEAN_WITH_BOOL, '''
-main() {
-  bool v;
-}
-''');
-  }
-
-  test_boolean_all() async {
-    await resolveTestUnit('''
-main() {
-  boolean v;
-  boolean w;
-}
-''');
-    await assertHasFixAllFix(StaticWarningCode.UNDEFINED_CLASS_BOOLEAN,
-        DartFixKind.REPLACE_BOOLEAN_WITH_BOOL, '''
-main() {
-  bool v;
-  bool w;
-}
-''');
-  }
-
-  test_canBeNullAfterNullAware_chain() async {
-    await resolveTestUnit('''
-main(x) {
-  x?.a.b.c;
-}
-''');
-    await assertHasFix(DartFixKind.REPLACE_WITH_NULL_AWARE, '''
-main(x) {
-  x?.a?.b?.c;
-}
-''');
-  }
-
-  test_canBeNullAfterNullAware_methodInvocation() async {
-    await resolveTestUnit('''
-main(x) {
-  x?.a.b();
-}
-''');
-    await assertHasFix(DartFixKind.REPLACE_WITH_NULL_AWARE, '''
-main(x) {
-  x?.a?.b();
-}
-''');
-  }
-
-  test_canBeNullAfterNullAware_propertyAccess() async {
-    await resolveTestUnit('''
-main(x) {
-  x?.a().b;
-}
-''');
-    await assertHasFix(DartFixKind.REPLACE_WITH_NULL_AWARE, '''
-main(x) {
-  x?.a()?.b;
-}
-''');
-  }
-
-  test_changeToStaticAccess_method() async {
-    await resolveTestUnit('''
-class A {
-  static foo() {}
-}
-main(A a) {
-  a.foo();
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO_STATIC_ACCESS, '''
-class A {
-  static foo() {}
-}
-main(A a) {
-  A.foo();
-}
-''');
-  }
-
-  test_changeToStaticAccess_method_importType() async {
-    addSource('/project/libA.dart', r'''
-library libA;
-class A {
-  static foo() {}
-}
-''');
-    addSource('/project/libB.dart', r'''
-library libB;
-import 'libA.dart';
-class B extends A {}
-''');
-    await resolveTestUnit('''
-import 'libB.dart';
-main(B b) {
-  b.foo();
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO_STATIC_ACCESS, '''
-import 'libA.dart';
-import 'libB.dart';
-main(B b) {
-  A.foo();
-}
-''');
-  }
-
-  test_changeToStaticAccess_method_prefixLibrary() async {
-    await resolveTestUnit('''
-import 'dart:async' as pref;
-main(pref.Future f) {
-  f.wait([]);
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO_STATIC_ACCESS, '''
-import 'dart:async' as pref;
-main(pref.Future f) {
-  pref.Future.wait([]);
-}
-''');
-  }
-
-  test_changeToStaticAccess_property() async {
-    await resolveTestUnit('''
-class A {
-  static get foo => 42;
-}
-main(A a) {
-  a.foo;
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO_STATIC_ACCESS, '''
-class A {
-  static get foo => 42;
-}
-main(A a) {
-  A.foo;
-}
-''');
-  }
-
-  test_changeToStaticAccess_property_importType() async {
-    addSource('/project/libA.dart', r'''
-library libA;
-class A {
-  static get foo => null;
-}
-''');
-    addSource('/project/libB.dart', r'''
-library libB;
-import 'libA.dart';
-class B extends A {}
-''');
-    await resolveTestUnit('''
-import 'libB.dart';
-main(B b) {
-  b.foo;
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO_STATIC_ACCESS, '''
-import 'libA.dart';
-import 'libB.dart';
-main(B b) {
-  A.foo;
-}
-''');
-  }
-
-  test_changeTypeAnnotation_BAD_multipleVariables() async {
-    await resolveTestUnit('''
-main() {
-  String a, b = 42;
-}
-''');
-    await assertNoFix(DartFixKind.CHANGE_TYPE_ANNOTATION);
-  }
-
-  test_changeTypeAnnotation_BAD_notVariableDeclaration() async {
-    await resolveTestUnit('''
-main() {
-  String v;
-  v = 42;
-}
-''');
-    await assertNoFix(DartFixKind.CHANGE_TYPE_ANNOTATION);
-  }
-
-  test_changeTypeAnnotation_OK_generic() async {
-    await resolveTestUnit('''
-main() {
-  String v = <int>[];
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TYPE_ANNOTATION, '''
-main() {
-  List<int> v = <int>[];
-}
-''');
-  }
-
-  test_changeTypeAnnotation_OK_simple() async {
-    await resolveTestUnit('''
-main() {
-  String v = 'abc'.length;
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TYPE_ANNOTATION, '''
-main() {
-  int v = 'abc'.length;
-}
-''');
-  }
-
-  test_convertToNamedArguments_BAD_ambiguous() async {
-    await resolveTestUnit('''
-class A {
-  A({int a, int b});
-}
-
-main() {
-  new A(1, 2);
-}
-''');
-    await assertNoFix(DartFixKind.CONVERT_TO_NAMED_ARGUMENTS);
-  }
-
-  test_convertToNamedArguments_BAD_noCompatibleParameter() async {
-    await resolveTestUnit('''
-class A {
-  A({String a});
-}
-
-main() {
-  new A(1);
-}
-''');
-    await assertNoFix(DartFixKind.CONVERT_TO_NAMED_ARGUMENTS);
-  }
-
-  test_convertToNamedArguments_OK_instanceCreation() async {
-    await resolveTestUnit('''
-class A {
-  A({int a, double b});
-}
-
-main() {
-  new A(1.2, 3);
-}
-''');
-    await assertHasFix(DartFixKind.CONVERT_TO_NAMED_ARGUMENTS, '''
-class A {
-  A({int a, double b});
-}
-
-main() {
-  new A(b: 1.2, a: 3);
-}
-''');
-  }
-
-  test_convertToNamedArguments_OK_instanceCreation_hasPositional() async {
-    await resolveTestUnit('''
-class A {
-  A(int a, {int b});
-}
-
-main() {
-  new A(1, 2);
-}
-''');
-    await assertHasFix(DartFixKind.CONVERT_TO_NAMED_ARGUMENTS, '''
-class A {
-  A(int a, {int b});
-}
-
-main() {
-  new A(1, b: 2);
-}
-''');
-  }
-
-  test_convertToNamedArguments_OK_methodInvocation() async {
-    await resolveTestUnit('''
-class C {
-  void foo({int a}) {}
-}
-
-main(C c) {
-  c.foo(1);
-}
-''');
-    await assertHasFix(DartFixKind.CONVERT_TO_NAMED_ARGUMENTS, '''
-class C {
-  void foo({int a}) {}
-}
-
-main(C c) {
-  c.foo(a: 1);
-}
-''');
-  }
-
-  test_createClass() async {
-    await resolveTestUnit('''
-main() {
-  Test v = null;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CLASS, '''
-main() {
-  Test v = null;
-}
-
-class Test {
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['Test v =', 'Test {']);
-  }
-
-  test_createClass_BAD_hasUnresolvedPrefix() async {
-    await resolveTestUnit('''
-main() {
-  prefix.Test v = null;
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_CLASS);
-  }
-
-  test_createClass_inLibraryOfPrefix() async {
-    String libCode = r'''
-library my.lib;
-
-class A {}
-''';
-    addSource('/project/lib.dart', libCode);
-    await resolveTestUnit('''
-import 'lib.dart' as lib;
-
-main() {
-  lib.A a = null;
-  lib.Test t = null;
-}
-''');
-    AnalysisError error = await _findErrorToFix();
-    fix = await _assertHasFix(DartFixKind.CREATE_CLASS, error);
-    change = fix.change;
-    // apply to "lib.dart"
-    List<SourceFileEdit> fileEdits = change.edits;
-    expect(fileEdits, hasLength(1));
-    SourceFileEdit fileEdit = change.edits[0];
-    expect(fileEdit.file, convertPath('/project/lib.dart'));
-    expect(SourceEdit.applySequence(libCode, fileEdit.edits), r'''
-library my.lib;
-
-class A {}
-
-class Test {
-}
-''');
-    expect(change.linkedEditGroups, hasLength(1));
-  }
-
-  test_createClass_innerLocalFunction() async {
-    await resolveTestUnit('''
-f() {
-  g() {
-    Test v = null;
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CLASS, '''
-f() {
-  g() {
-    Test v = null;
-  }
-}
-
-class Test {
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['Test v =', 'Test {']);
-  }
-
-  test_createClass_instanceCreation_withoutNew_fromFunction() async {
-    await resolveTestUnit('''
-main() {
-  Test ();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CLASS, '''
-main() {
-  Test ();
-}
-
-class Test {
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['Test ()', 'Test {']);
-  }
-
-  test_createClass_instanceCreation_withoutNew_fromMethod() async {
-    await resolveTestUnit('''
-class A {
-  main() {
-    Test ();
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CLASS, '''
-class A {
-  main() {
-    Test ();
-  }
-}
-
-class Test {
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['Test ()', 'Test {']);
-  }
-
-  test_createClass_itemOfList() async {
-    await resolveTestUnit('''
-main() {
-  var a = [Test];
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CLASS, '''
-main() {
-  var a = [Test];
-}
-
-class Test {
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['Test];', 'Test {']);
-  }
-
-  test_createClass_itemOfList_inAnnotation() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode == StaticWarningCode.UNDEFINED_IDENTIFIER;
-    };
-    await resolveTestUnit('''
-class MyAnnotation {
-  const MyAnnotation(a, b);
-}
-@MyAnnotation(int, const [Test])
-main() {}
-''');
-    await assertHasFix(DartFixKind.CREATE_CLASS, '''
-class MyAnnotation {
-  const MyAnnotation(a, b);
-}
-@MyAnnotation(int, const [Test])
-main() {}
-
-class Test {
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['Test])', 'Test {']);
-  }
-
-  test_createConstructor_forFinalFields() async {
-    errorFilter = (AnalysisError error) {
-      return error.message.contains("'a'");
-    };
-    await resolveTestUnit('''
-class Test {
-  final int a;
-  final int b = 2;
-  final int c;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CONSTRUCTOR_FOR_FINAL_FIELDS, '''
-class Test {
-  final int a;
-  final int b = 2;
-  final int c;
-
-  Test(this.a, this.c);
-}
-''');
-  }
-
-  test_createConstructor_forFinalFields_flutter() async {
-    addFlutterPackage();
-    errorFilter = (AnalysisError error) {
-      return error.message.contains("'a'");
-    };
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-
-class MyWidget extends StatelessWidget {
-  final int a;
-  final int b = 2;
-  final int c;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CONSTRUCTOR_FOR_FINAL_FIELDS, '''
-import 'package:flutter/widgets.dart';
-
-class MyWidget extends StatelessWidget {
-  final int a;
-  final int b = 2;
-  final int c;
-
-  const MyWidget({Key key, this.a, this.c}) : super(key: key);
-}
-''');
-  }
-
-  test_createConstructor_forFinalFields_flutter_childLast() async {
-    addFlutterPackage();
-    errorFilter = (AnalysisError error) {
-      return error.message.contains("'a'");
-    };
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-
-class MyWidget extends StatelessWidget {
-  final int a;
-  final Widget child;
-  final int b;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CONSTRUCTOR_FOR_FINAL_FIELDS, '''
-import 'package:flutter/widgets.dart';
-
-class MyWidget extends StatelessWidget {
-  final int a;
-  final Widget child;
-  final int b;
-
-  const MyWidget({Key key, this.a, this.b, this.child}) : super(key: key);
-}
-''');
-  }
-
-  test_createConstructor_forFinalFields_flutter_childrenLast() async {
-    addFlutterPackage();
-    errorFilter = (AnalysisError error) {
-      return error.message.contains("'a'");
-    };
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-
-class MyWidget extends StatelessWidget {
-  final int a;
-  final List<Widget> children;
-  final int b;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CONSTRUCTOR_FOR_FINAL_FIELDS, '''
-import 'package:flutter/widgets.dart';
-
-class MyWidget extends StatelessWidget {
-  final int a;
-  final List<Widget> children;
-  final int b;
-
-  const MyWidget({Key key, this.a, this.b, this.children}) : super(key: key);
-}
-''');
-  }
-
-  test_createConstructor_insteadOfSyntheticDefault() async {
-    await resolveTestUnit('''
-class A {
-  int field;
-
-  method() {}
-}
-main() {
-  new A(1, 2.0);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CONSTRUCTOR, '''
-class A {
-  int field;
-
-  A(int i, double d);
-
-  method() {}
-}
-main() {
-  new A(1, 2.0);
-}
-''');
-  }
-
-  test_createConstructor_named() async {
-    await resolveTestUnit('''
-class A {
-  method() {}
-}
-main() {
-  new A.named(1, 2.0);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CONSTRUCTOR, '''
-class A {
-  A.named(int i, double d);
-
-  method() {}
-}
-main() {
-  new A.named(1, 2.0);
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['named(int ', 'named(1']);
-  }
-
-  test_createConstructor_named_emptyClassBody() async {
-    await resolveTestUnit('''
-class A {}
-main() {
-  new A.named(1);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CONSTRUCTOR, '''
-class A {
-  A.named(int i);
-}
-main() {
-  new A.named(1);
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['named(int ', 'named(1']);
-  }
-
-  test_createConstructorForFinalFields_inTopLevelMethod() async {
-    await resolveTestUnit('''
-main() {
-  final int v;
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_CONSTRUCTOR_FOR_FINAL_FIELDS);
-  }
-
-  test_createConstructorForFinalFields_topLevelField() async {
-    await resolveTestUnit('''
-final int v;
-''');
-    await assertNoFix(DartFixKind.CREATE_CONSTRUCTOR_FOR_FINAL_FIELDS);
-  }
-
-  test_createConstructorSuperExplicit() async {
-    await resolveTestUnit('''
-class A {
-  A(bool p1, int p2, double p3, String p4, {p5});
-}
-class B extends A {
-  B() {}
-}
-''');
-    await assertHasFix(DartFixKind.ADD_SUPER_CONSTRUCTOR_INVOCATION, '''
-class A {
-  A(bool p1, int p2, double p3, String p4, {p5});
-}
-class B extends A {
-  B() : super(false, 0, 0.0, '') {}
-}
-''');
-  }
-
-  test_createConstructorSuperExplicit_hasInitializers() async {
-    await resolveTestUnit('''
-class A {
-  A(int p);
-}
-class B extends A {
-  int field;
-  B() : field = 42 {}
-}
-''');
-    await assertHasFix(DartFixKind.ADD_SUPER_CONSTRUCTOR_INVOCATION, '''
-class A {
-  A(int p);
-}
-class B extends A {
-  int field;
-  B() : field = 42, super(0) {}
-}
-''');
-  }
-
-  test_createConstructorSuperExplicit_named() async {
-    await resolveTestUnit('''
-class A {
-  A.named(int p);
-}
-class B extends A {
-  B() {}
-}
-''');
-    await assertHasFix(DartFixKind.ADD_SUPER_CONSTRUCTOR_INVOCATION, '''
-class A {
-  A.named(int p);
-}
-class B extends A {
-  B() : super.named(0) {}
-}
-''');
-  }
-
-  test_createConstructorSuperExplicit_named_private() async {
-    await resolveTestUnit('''
-class A {
-  A._named(int p);
-}
-class B extends A {
-  B() {}
-}
-''');
-    await assertNoFix(DartFixKind.ADD_SUPER_CONSTRUCTOR_INVOCATION);
-  }
-
-  test_createConstructorSuperExplicit_typeArgument() async {
-    await resolveTestUnit('''
-class A<T> {
-  A(T p);
-}
-class B extends A<int> {
-  B();
-}
-''');
-    await assertHasFix(DartFixKind.ADD_SUPER_CONSTRUCTOR_INVOCATION, '''
-class A<T> {
-  A(T p);
-}
-class B extends A<int> {
-  B() : super(0);
-}
-''');
-  }
-
-  test_createConstructorSuperImplicit() async {
-    await resolveTestUnit('''
-class A {
-  A(p1, int p2, List<String> p3, [int p4]);
-}
-class B extends A {
-  int existingField;
-
-  void existingMethod() {}
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CONSTRUCTOR_SUPER, '''
-class A {
-  A(p1, int p2, List<String> p3, [int p4]);
-}
-class B extends A {
-  int existingField;
-
-  B(p1, int p2, List<String> p3) : super(p1, p2, p3);
-
-  void existingMethod() {}
-}
-''');
-  }
-
-  test_createConstructorSuperImplicit_fieldInitializer() async {
-    await resolveTestUnit('''
-class A {
-  int _field;
-  A(this._field);
-}
-class B extends A {
-  int existingField;
-
-  void existingMethod() {}
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CONSTRUCTOR_SUPER, '''
-class A {
-  int _field;
-  A(this._field);
-}
-class B extends A {
-  int existingField;
-
-  B(int field) : super(field);
-
-  void existingMethod() {}
-}
-''');
-  }
-
-  test_createConstructorSuperImplicit_importType() async {
-    addSource('/project/libA.dart', r'''
-library libA;
-class A {}
-''');
-    addSource('/project/libB.dart', r'''
-library libB;
-import 'libA.dart';
-class B {
-  B(A a);
-}
-''');
-    await resolveTestUnit('''
-import 'libB.dart';
-class C extends B {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CONSTRUCTOR_SUPER, '''
-import 'libA.dart';
-import 'libB.dart';
-class C extends B {
-  C(A a) : super(a);
-}
-''');
-  }
-
-  test_createConstructorSuperImplicit_named() async {
-    await resolveTestUnit('''
-class A {
-  A.named(p1, int p2);
-}
-class B extends A {
-  int existingField;
-
-  void existingMethod() {}
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_CONSTRUCTOR_SUPER, '''
-class A {
-  A.named(p1, int p2);
-}
-class B extends A {
-  int existingField;
-
-  B.named(p1, int p2) : super.named(p1, p2);
-
-  void existingMethod() {}
-}
-''');
-  }
-
-  test_createConstructorSuperImplicit_private() async {
-    await resolveTestUnit('''
-class A {
-  A._named(p);
-}
-class B extends A {
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_CONSTRUCTOR_SUPER);
-  }
-
-  test_createConstructorSuperImplicit_typeArgument() async {
-    await resolveTestUnit('''
-class C<T> {
-  final T x;
-  C(this.x);
-}
-class D extends C<int> {
-}''');
-    await assertHasFix(DartFixKind.CREATE_CONSTRUCTOR_SUPER, '''
-class C<T> {
-  final T x;
-  C(this.x);
-}
-class D extends C<int> {
-  D(int x) : super(x);
-}''');
-  }
-
-  test_createField_BAD_inEnum() async {
-    await resolveTestUnit('''
-enum MyEnum {
-  AAA, BBB
-}
-main() {
-  MyEnum.foo;
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_FIELD);
-  }
-
-  test_createField_BAD_inSDK() async {
-    await resolveTestUnit('''
-main(List p) {
-  p.foo = 1;
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_FIELD);
-  }
-
-  test_createField_getter_multiLevel() async {
-    await resolveTestUnit('''
-class A {
-}
-class B {
-  A a;
-}
-class C {
-  B b;
-}
-main(C c) {
-  int v = c.b.a.test;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  int test;
-}
-class B {
-  A a;
-}
-class C {
-  B b;
-}
-main(C c) {
-  int v = c.b.a.test;
-}
-''');
-  }
-
-  test_createField_getter_qualified_instance() async {
-    await resolveTestUnit('''
-class A {
-}
-main(A a) {
-  int v = a.test;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  int test;
-}
-main(A a) {
-  int v = a.test;
-}
-''');
-  }
-
-  test_createField_getter_qualified_instance_differentLibrary() async {
-    addSource('/project/other.dart', '''
-/**
- * A comment to push the offset of the braces for the following class
- * declaration past the end of the content of the test file. Used to catch an
- * index out of bounds exception that occurs when using the test source instead
- * of the target source to compute the location at which to insert the field.
- */
-class A {
-}
-''');
-    await resolveTestUnit('''
-import 'other.dart';
-main(A a) {
-  int v = a.test;
-}
-''');
-    await assertHasFix(
-        DartFixKind.CREATE_FIELD,
-        '''
-/**
- * A comment to push the offset of the braces for the following class
- * declaration past the end of the content of the test file. Used to catch an
- * index out of bounds exception that occurs when using the test source instead
- * of the target source to compute the location at which to insert the field.
- */
-class A {
-  int test;
-}
-''',
-        target: '/project/other.dart');
-  }
-
-  test_createField_getter_qualified_instance_dynamicType() async {
-    await resolveTestUnit('''
-class A {
-  B b;
-  void f(Object p) {
-    p == b.test;
-  }
-}
-class B {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  B b;
-  void f(Object p) {
-    p == b.test;
-  }
-}
-class B {
-  var test;
-}
-''');
-  }
-
-  test_createField_getter_qualified_propagatedType() async {
-    await resolveTestUnit('''
-class A {
-  A get self => this;
-}
-main() {
-  var a = new A();
-  int v = a.self.test;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  int test;
-
-  A get self => this;
-}
-main() {
-  var a = new A();
-  int v = a.self.test;
-}
-''');
-  }
-
-  test_createField_getter_unqualified_instance_asInvocationArgument() async {
-    await resolveTestUnit('''
-class A {
-  main() {
-    f(test);
-  }
-}
-f(String s) {}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  String test;
-
-  main() {
-    f(test);
-  }
-}
-f(String s) {}
-''');
-  }
-
-  test_createField_getter_unqualified_instance_assignmentRhs() async {
-    await resolveTestUnit('''
-class A {
-  main() {
-    int v = test;
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  int test;
-
-  main() {
-    int v = test;
-  }
-}
-''');
-  }
-
-  test_createField_getter_unqualified_instance_asStatement() async {
-    await resolveTestUnit('''
-class A {
-  main() {
-    test;
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  var test;
-
-  main() {
-    test;
-  }
-}
-''');
-  }
-
-  test_createField_hint() async {
-    await resolveTestUnit('''
-class A {
-}
-main(A a) {
-  var x = a;
-  int v = x.test;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  int test;
-}
-main(A a) {
-  var x = a;
-  int v = x.test;
-}
-''');
-  }
-
-  test_createField_hint_setter() async {
-    await resolveTestUnit('''
-class A {
-}
-main(A a) {
-  var x = a;
-  x.test = 0;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  int test;
-}
-main(A a) {
-  var x = a;
-  x.test = 0;
-}
-''');
-  }
-
-  test_createField_importType() async {
-    addSource('/project/libA.dart', r'''
-library libA;
-class A {}
-''');
-    addSource('/project/libB.dart', r'''
-library libB;
-import 'libA.dart';
-A getA() => null;
-''');
-    await resolveTestUnit('''
-import 'libB.dart';
-class C {
-}
-main(C c) {
-  c.test = getA();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-import 'libA.dart';
-import 'libB.dart';
-class C {
-  A test;
-}
-main(C c) {
-  c.test = getA();
-}
-''');
-  }
-
-  test_createField_invalidInitializer_withoutType() async {
-    await resolveTestUnit('''
-class C {
-  C(this.text);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class C {
-  var text;
-
-  C(this.text);
-}
-''');
-  }
-
-  test_createField_invalidInitializer_withType() async {
-    await resolveTestUnit('''
-class C {
-  C(String this.text);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class C {
-  String text;
-
-  C(String this.text);
-}
-''');
-  }
-
-  test_createField_setter_generic_BAD() async {
-    await resolveTestUnit('''
-class A {
-}
-class B<T> {
-  List<T> items;
-  main(A a) {
-    a.test = items;
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  List test;
-}
-class B<T> {
-  List<T> items;
-  main(A a) {
-    a.test = items;
-  }
-}
-''');
-  }
-
-  test_createField_setter_generic_OK_local() async {
-    await resolveTestUnit('''
-class A<T> {
-  List<T> items;
-
-  main(A a) {
-    test = items;
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A<T> {
-  List<T> items;
-
-  List<T> test;
-
-  main(A a) {
-    test = items;
-  }
-}
-''');
-  }
-
-  test_createField_setter_qualified_instance_hasField() async {
-    await resolveTestUnit('''
-class A {
-  int aaa;
-  int zzz;
-
-  existingMethod() {}
-}
-main(A a) {
-  a.test = 5;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  int aaa;
-  int zzz;
-
-  int test;
-
-  existingMethod() {}
-}
-main(A a) {
-  a.test = 5;
-}
-''');
-  }
-
-  test_createField_setter_qualified_instance_hasMethod() async {
-    await resolveTestUnit('''
-class A {
-  existingMethod() {}
-}
-main(A a) {
-  a.test = 5;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  int test;
-
-  existingMethod() {}
-}
-main(A a) {
-  a.test = 5;
-}
-''');
-  }
-
-  test_createField_setter_qualified_static() async {
-    await resolveTestUnit('''
-class A {
-}
-main() {
-  A.test = 5;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  static int test;
-}
-main() {
-  A.test = 5;
-}
-''');
-  }
-
-  test_createField_setter_unqualified_instance() async {
-    await resolveTestUnit('''
-class A {
-  main() {
-    test = 5;
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  int test;
-
-  main() {
-    test = 5;
-  }
-}
-''');
-  }
-
-  test_createField_setter_unqualified_static() async {
-    await resolveTestUnit('''
-class A {
-  static main() {
-    test = 5;
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FIELD, '''
-class A {
-  static int test;
-
-  static main() {
-    test = 5;
-  }
-}
-''');
-  }
-
-  test_createFile_forImport() async {
-    testFile = '/my/project/bin/test.dart';
-    await resolveTestUnit('''
-import 'my_file.dart';
-''');
-    AnalysisError error = await _findErrorToFix();
-    fix = await _assertHasFix(DartFixKind.CREATE_FILE, error);
-    change = fix.change;
-    // validate change
-    List<SourceFileEdit> fileEdits = change.edits;
-    expect(fileEdits, hasLength(1));
-    SourceFileEdit fileEdit = change.edits[0];
-    expect(fileEdit.file, convertPath('/my/project/bin/my_file.dart'));
-    expect(fileEdit.fileStamp, -1);
-    expect(fileEdit.edits, hasLength(1));
-    expect(fileEdit.edits[0].replacement, contains('library my_file;'));
-  }
-
-  test_createFile_forImport_BAD_inPackage_lib_justLib() async {
-    newFile('/projects/my_package/pubspec.yaml', content: 'name: my_package');
-    testFile = '/projects/my_package/test.dart';
-    await resolveTestUnit('''
-import 'lib';
-''');
-    await assertNoFix(DartFixKind.CREATE_FILE);
-  }
-
-  test_createFile_forImport_BAD_notDart() async {
-    testFile = '/my/project/bin/test.dart';
-    await resolveTestUnit('''
-import 'my_file.txt';
-''');
-    await assertNoFix(DartFixKind.CREATE_FILE);
-  }
-
-  test_createFile_forImport_inPackage_lib() async {
-    newFile('/projects/my_package/pubspec.yaml', content: 'name: my_package');
-    testFile = '/projects/my_package/lib/test.dart';
-    newFolder('/projects/my_package/lib');
-    await resolveTestUnit('''
-import 'a/bb/c_cc/my_lib.dart';
-''');
-    AnalysisError error = await _findErrorToFix();
-    fix = await _assertHasFix(DartFixKind.CREATE_FILE, error);
-    change = fix.change;
-    // validate change
-    List<SourceFileEdit> fileEdits = change.edits;
-    expect(fileEdits, hasLength(1));
-    SourceFileEdit fileEdit = change.edits[0];
-    expect(fileEdit.file,
-        convertPath('/projects/my_package/lib/a/bb/c_cc/my_lib.dart'));
-    expect(fileEdit.fileStamp, -1);
-    expect(fileEdit.edits, hasLength(1));
-    expect(fileEdit.edits[0].replacement,
-        contains('library my_package.a.bb.c_cc.my_lib;'));
-  }
-
-  test_createFile_forImport_inPackage_test() async {
-    newFile('/projects/my_package/pubspec.yaml', content: 'name: my_package');
-    testFile = '/projects/my_package/test/misc/test_all.dart';
-    await resolveTestUnit('''
-import 'a/bb/my_lib.dart';
-''');
-    AnalysisError error = await _findErrorToFix();
-    fix = await _assertHasFix(DartFixKind.CREATE_FILE, error);
-    change = fix.change;
-    // validate change
-    List<SourceFileEdit> fileEdits = change.edits;
-    expect(fileEdits, hasLength(1));
-    SourceFileEdit fileEdit = change.edits[0];
-    expect(fileEdit.file,
-        convertPath('/projects/my_package/test/misc/a/bb/my_lib.dart'));
-    expect(fileEdit.fileStamp, -1);
-    expect(fileEdit.edits, hasLength(1));
-    expect(fileEdit.edits[0].replacement,
-        contains('library my_package.test.misc.a.bb.my_lib;'));
-  }
-
-  test_createFile_forPart() async {
-    testFile = convertPath('/my/project/bin/test.dart');
-    await resolveTestUnit('''
-library my.lib;
-part 'my_part.dart';
-''');
-    AnalysisError error = await _findErrorToFix();
-    fix = await _assertHasFix(DartFixKind.CREATE_FILE, error);
-    change = fix.change;
-    // validate change
-    List<SourceFileEdit> fileEdits = change.edits;
-    expect(fileEdits, hasLength(1));
-    SourceFileEdit fileEdit = change.edits[0];
-    expect(fileEdit.file, convertPath('/my/project/bin/my_part.dart'));
-    expect(fileEdit.fileStamp, -1);
-    expect(fileEdit.edits, hasLength(1));
-    expect(fileEdit.edits[0].replacement, contains('part of my.lib;'));
-  }
-
-  test_createFile_forPart_inPackageLib() async {
-    newFile('/my/pubspec.yaml', content: r'''
-name: my_test
-''');
-    testFile = '/my/lib/test.dart';
-    addTestSource('''
-library my.lib;
-part 'my_part.dart';
-''', Uri.parse('package:my/test.dart'));
-    // configure SourceFactory
-    UriResolver pkgResolver = new PackageMapUriResolver(resourceProvider, {
-      'my': <Folder>[getFolder('/my/lib')],
-    });
-    SourceFactory sourceFactory = new SourceFactory(
-        [new DartUriResolver(sdk), pkgResolver, resourceResolver]);
-    driver.configure(sourceFactory: sourceFactory);
-    testUnit = (await driver.getResult(convertPath(testFile))).unit;
-    // prepare fix
-    AnalysisError error = await _findErrorToFix();
-    fix = await _assertHasFix(DartFixKind.CREATE_FILE, error);
-    change = fix.change;
-    // validate change
-    List<SourceFileEdit> fileEdits = change.edits;
-    expect(fileEdits, hasLength(1));
-    SourceFileEdit fileEdit = change.edits[0];
-    expect(fileEdit.file, convertPath('/my/lib/my_part.dart'));
-    expect(fileEdit.fileStamp, -1);
-    expect(fileEdit.edits, hasLength(1));
-    expect(fileEdit.edits[0].replacement, contains('part of my.lib;'));
-  }
-
-  test_createGetter_BAD_inSDK() async {
-    await resolveTestUnit('''
-main(List p) {
-  int v = p.foo;
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_GETTER);
-  }
-
-  test_createGetter_hint_getter() async {
-    await resolveTestUnit('''
-class A {
-}
-main(A a) {
-  var x = a;
-  int v = x.test;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_GETTER, '''
-class A {
-  int get test => null;
-}
-main(A a) {
-  var x = a;
-  int v = x.test;
-}
-''');
-  }
-
-  test_createGetter_location_afterLastGetter() async {
-    await resolveTestUnit('''
-class A {
-  int existingField;
-
-  int get existingGetter => null;
-
-  existingMethod() {}
-}
-main(A a) {
-  int v = a.test;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_GETTER, '''
-class A {
-  int existingField;
-
-  int get existingGetter => null;
-
-  int get test => null;
-
-  existingMethod() {}
-}
-main(A a) {
-  int v = a.test;
-}
-''');
-  }
-
-  test_createGetter_multiLevel() async {
-    await resolveTestUnit('''
-class A {
-}
-class B {
-  A a;
-}
-class C {
-  B b;
-}
-main(C c) {
-  int v = c.b.a.test;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_GETTER, '''
-class A {
-  int get test => null;
-}
-class B {
-  A a;
-}
-class C {
-  B b;
-}
-main(C c) {
-  int v = c.b.a.test;
-}
-''');
-  }
-
-  test_createGetter_qualified_instance() async {
-    await resolveTestUnit('''
-class A {
-}
-main(A a) {
-  int v = a.test;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_GETTER, '''
-class A {
-  int get test => null;
-}
-main(A a) {
-  int v = a.test;
-}
-''');
-  }
-
-  test_createGetter_qualified_instance_differentLibrary() async {
-    addSource('/project/other.dart', '''
-/**
- * A comment to push the offset of the braces for the following class
- * declaration past the end of the content of the test file. Used to catch an
- * index out of bounds exception that occurs when using the test source instead
- * of the target source to compute the location at which to insert the field.
- */
-class A {
-}
-''');
-    await resolveTestUnit('''
-import 'other.dart';
-main(A a) {
-  int v = a.test;
-}
-''');
-    await assertHasFix(
-        DartFixKind.CREATE_GETTER,
-        '''
-/**
- * A comment to push the offset of the braces for the following class
- * declaration past the end of the content of the test file. Used to catch an
- * index out of bounds exception that occurs when using the test source instead
- * of the target source to compute the location at which to insert the field.
- */
-class A {
-  int get test => null;
-}
-''',
-        target: '/project/other.dart');
-  }
-
-  test_createGetter_qualified_instance_dynamicType() async {
-    await resolveTestUnit('''
-class A {
-  B b;
-  void f(Object p) {
-    p == b.test;
-  }
-}
-class B {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_GETTER, '''
-class A {
-  B b;
-  void f(Object p) {
-    p == b.test;
-  }
-}
-class B {
-  get test => null;
-}
-''');
-  }
-
-  test_createGetter_qualified_propagatedType() async {
-    await resolveTestUnit('''
-class A {
-  A get self => this;
-}
-main() {
-  var a = new A();
-  int v = a.self.test;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_GETTER, '''
-class A {
-  A get self => this;
-
-  int get test => null;
-}
-main() {
-  var a = new A();
-  int v = a.self.test;
-}
-''');
-  }
-
-  test_createGetter_setterContext() async {
-    await resolveTestUnit('''
-class A {
-}
-main(A a) {
-  a.test = 42;
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_GETTER);
-  }
-
-  test_createGetter_unqualified_instance_asInvocationArgument() async {
-    await resolveTestUnit('''
-class A {
-  main() {
-    f(test);
-  }
-}
-f(String s) {}
-''');
-    await assertHasFix(DartFixKind.CREATE_GETTER, '''
-class A {
-  String get test => null;
-
-  main() {
-    f(test);
-  }
-}
-f(String s) {}
-''');
-  }
-
-  test_createGetter_unqualified_instance_assignmentLhs() async {
-    await resolveTestUnit('''
-class A {
-  main() {
-    test = 42;
-  }
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_GETTER);
-  }
-
-  test_createGetter_unqualified_instance_assignmentRhs() async {
-    await resolveTestUnit('''
-class A {
-  main() {
-    int v = test;
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_GETTER, '''
-class A {
-  int get test => null;
-
-  main() {
-    int v = test;
-  }
-}
-''');
-  }
-
-  test_createGetter_unqualified_instance_asStatement() async {
-    await resolveTestUnit('''
-class A {
-  main() {
-    test;
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_GETTER, '''
-class A {
-  get test => null;
-
-  main() {
-    test;
-  }
-}
-''');
-  }
-
-  test_createLocalVariable_functionType_named() async {
-    await resolveTestUnit('''
-typedef MY_FUNCTION(int p);
-foo(MY_FUNCTION f) {}
-main() {
-  foo(bar);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_LOCAL_VARIABLE, '''
-typedef MY_FUNCTION(int p);
-foo(MY_FUNCTION f) {}
-main() {
-  MY_FUNCTION bar;
-  foo(bar);
-}
-''');
-  }
-
-  test_createLocalVariable_functionType_named_generic() async {
-    await resolveTestUnit('''
-typedef MY_FUNCTION<T>(T p);
-foo(MY_FUNCTION<int> f) {}
-main() {
-  foo(bar);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_LOCAL_VARIABLE, '''
-typedef MY_FUNCTION<T>(T p);
-foo(MY_FUNCTION<int> f) {}
-main() {
-  MY_FUNCTION<int> bar;
-  foo(bar);
-}
-''');
-  }
-
-  test_createLocalVariable_functionType_synthetic() async {
-    await resolveTestUnit('''
-foo(f(int p)) {}
-main() {
-  foo(bar);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_LOCAL_VARIABLE, '''
-foo(f(int p)) {}
-main() {
-  Function(int p) bar;
-  foo(bar);
-}
-''');
-  }
-
-  test_createLocalVariable_read_typeAssignment() async {
-    await resolveTestUnit('''
-main() {
-  int a = test;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_LOCAL_VARIABLE, '''
-main() {
-  int test;
-  int a = test;
-}
-''');
-  }
-
-  test_createLocalVariable_read_typeCondition() async {
-    await resolveTestUnit('''
-main() {
-  if (!test) {
-    print(42);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_LOCAL_VARIABLE, '''
-main() {
-  bool test;
-  if (!test) {
-    print(42);
-  }
-}
-''');
-  }
-
-  test_createLocalVariable_read_typeInvocationArgument() async {
-    await resolveTestUnit('''
-main() {
-  f(test);
-}
-f(String p) {}
-''');
-    await assertHasFix(DartFixKind.CREATE_LOCAL_VARIABLE, '''
-main() {
-  String test;
-  f(test);
-}
-f(String p) {}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['String test;']);
-    _assertLinkedGroup(change.linkedEditGroups[1], ['test;', 'test);']);
-  }
-
-  test_createLocalVariable_read_typeInvocationTarget() async {
-    await resolveTestUnit('''
-main() {
-  test.add('hello');
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_LOCAL_VARIABLE, '''
-main() {
-  var test;
-  test.add('hello');
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['test;', 'test.add(']);
-  }
-
-  test_createLocalVariable_withImport() async {
-    addPackageSource('pkg', 'a/a.dart', '''
-class A {}
-''');
-    addPackageSource('pkg', 'b/b.dart', '''
-class B {}
-''');
-    addPackageSource('pkg', 'c/c.dart', '''
-import 'package:pkg/a/a.dart';
-import 'package:pkg/b/b.dart';
-
-class C {
-  C(A a, B b);
-}
-''');
-
-    await resolveTestUnit('''
-import 'package:pkg/a/a.dart';
-import 'package:pkg/c/c.dart';
-
-main() {
-  A a;
-  new C(a, b);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_LOCAL_VARIABLE, '''
-import 'package:pkg/a/a.dart';
-import 'package:pkg/b/b.dart';
-import 'package:pkg/c/c.dart';
-
-main() {
-  A a;
-  B b;
-  new C(a, b);
-}
-''');
-
-    List<LinkedEditGroup> groups = change.linkedEditGroups;
-    expect(groups, hasLength(2));
-    LinkedEditGroup typeGroup = groups[0];
-    List<Position> typePositions = typeGroup.positions;
-    expect(typePositions, hasLength(1));
-    expect(typePositions[0].offset, 112);
-    LinkedEditGroup nameGroup = groups[1];
-    List<Position> groupPositions = nameGroup.positions;
-    expect(groupPositions, hasLength(2));
-    expect(groupPositions[0].offset, 114);
-    expect(groupPositions[1].offset, 128);
-  }
-
-  test_createLocalVariable_write_assignment() async {
-    await resolveTestUnit('''
-main() {
-  test = 42;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_LOCAL_VARIABLE, '''
-main() {
-  var test = 42;
-}
-''');
-  }
-
-  test_createLocalVariable_write_assignment_compound() async {
-    await resolveTestUnit('''
-main() {
-  test += 42;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_LOCAL_VARIABLE, '''
-main() {
-  int test;
-  test += 42;
-}
-''');
-  }
-
-  test_createMissingOverrides_field_untyped() async {
-    await resolveTestUnit('''
-class A {
-  var f;
-}
-
-class B implements A {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-class A {
-  var f;
-}
-
-class B implements A {
-  @override
-  var f;
-}
-''');
-  }
-
-  test_createMissingOverrides_functionTypeAlias() async {
-    await resolveTestUnit('''
-typedef int Binary(int left, int right);
-
-abstract class Emulator {
-  void performBinary(Binary binary);
-}
-
-class MyEmulator extends Emulator {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-typedef int Binary(int left, int right);
-
-abstract class Emulator {
-  void performBinary(Binary binary);
-}
-
-class MyEmulator extends Emulator {
-  @override
-  void performBinary(Binary binary) {
-    // TODO: implement performBinary
-  }
-}
-''');
-  }
-
-  test_createMissingOverrides_functionTypedParameter() async {
-    await resolveTestUnit('''
-abstract class A {
-  void forEach(int f(double p1, String p2));
-}
-
-class B extends A {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-abstract class A {
-  void forEach(int f(double p1, String p2));
-}
-
-class B extends A {
-  @override
-  void forEach(int Function(double p1, String p2) f) {
-    // TODO: implement forEach
-  }
-}
-''');
-  }
-
-  test_createMissingOverrides_generics_typeArguments() async {
-    await resolveTestUnit('''
-class Iterator<T> {
-}
-
-abstract class IterableMixin<T> {
-  Iterator<T> get iterator;
-}
-
-class Test extends IterableMixin<int> {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-class Iterator<T> {
-}
-
-abstract class IterableMixin<T> {
-  Iterator<T> get iterator;
-}
-
-class Test extends IterableMixin<int> {
-  @override
-  // TODO: implement iterator
-  Iterator<int> get iterator => null;
-}
-''');
-  }
-
-  test_createMissingOverrides_generics_typeParameters() async {
-    await resolveTestUnit('''
-abstract class ItemProvider<T> {
-  List<T> getItems();
-}
-
-class Test<V> extends ItemProvider<V> {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-abstract class ItemProvider<T> {
-  List<T> getItems();
-}
-
-class Test<V> extends ItemProvider<V> {
-  @override
-  List<V> getItems() {
-    // TODO: implement getItems
-    return null;
-  }
-}
-''');
-  }
-
-  test_createMissingOverrides_getter() async {
-    await resolveTestUnit('''
-abstract class A {
-  get g1;
-  int get g2;
-}
-
-class B extends A {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-abstract class A {
-  get g1;
-  int get g2;
-}
-
-class B extends A {
-  @override
-  // TODO: implement g1
-  get g1 => null;
-
-  @override
-  // TODO: implement g2
-  int get g2 => null;
-}
-''');
-  }
-
-  test_createMissingOverrides_importPrefix() async {
-    await resolveTestUnit('''
-import 'dart:async' as aaa;
-abstract class A {
-  Map<aaa.Future, List<aaa.Future>> g(aaa.Future p);
-}
-
-class B extends A {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-import 'dart:async' as aaa;
-abstract class A {
-  Map<aaa.Future, List<aaa.Future>> g(aaa.Future p);
-}
-
-class B extends A {
-  @override
-  Map<aaa.Future, List<aaa.Future>> g(aaa.Future p) {
-    // TODO: implement g
-    return null;
-  }
-}
-''');
-  }
-
-  test_createMissingOverrides_mergeToField_getterSetter() async {
-    await resolveTestUnit('''
-class A {
-  int ma;
-  void mb() {}
-  double mc;
-}
-
-class B implements A {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-class A {
-  int ma;
-  void mb() {}
-  double mc;
-}
-
-class B implements A {
-  @override
-  int ma;
-
-  @override
-  double mc;
-
-  @override
-  void mb() {
-    // TODO: implement mb
-  }
-}
-''');
-  }
-
-  test_createMissingOverrides_method() async {
-    await resolveTestUnit('''
-abstract class A {
-  void m1();
-  int m2();
-  String m3(int p1, double p2, Map<int, List<String>> p3);
-  String m4(p1, p2);
-  String m5(p1, [int p2 = 2, int p3, p4 = 4]);
-  String m6(p1, {int p2 = 2, int p3, p4: 4});
-}
-
-class B extends A {
-}
-''');
-    String expectedCode = '''
-abstract class A {
-  void m1();
-  int m2();
-  String m3(int p1, double p2, Map<int, List<String>> p3);
-  String m4(p1, p2);
-  String m5(p1, [int p2 = 2, int p3, p4 = 4]);
-  String m6(p1, {int p2 = 2, int p3, p4: 4});
-}
-
-class B extends A {
-  @override
-  void m1() {
-    // TODO: implement m1
-  }
-
-  @override
-  int m2() {
-    // TODO: implement m2
-    return null;
-  }
-
-  @override
-  String m3(int p1, double p2, Map<int, List<String>> p3) {
-    // TODO: implement m3
-    return null;
-  }
-
-  @override
-  String m4(p1, p2) {
-    // TODO: implement m4
-    return null;
-  }
-
-  @override
-  String m5(p1, [int p2 = 2, int p3, p4 = 4]) {
-    // TODO: implement m5
-    return null;
-  }
-
-  @override
-  String m6(p1, {int p2 = 2, int p3, p4 = 4}) {
-    // TODO: implement m6
-    return null;
-  }
-}
-''';
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, expectedCode);
-    // end position should be on "m1", not on "m2", "m3", etc
-    {
-      Position endPosition = change.selection;
-      expect(endPosition, isNotNull);
-      expect(endPosition.file, testFile);
-      int endOffset = endPosition.offset;
-      String endString = expectedCode.substring(endOffset, endOffset + 25);
-      expect(endString, contains('m1'));
-      expect(endString, isNot(contains('m2')));
-      expect(endString, isNot(contains('m3')));
-      expect(endString, isNot(contains('m4')));
-      expect(endString, isNot(contains('m5')));
-      expect(endString, isNot(contains('m6')));
-    }
-  }
-
-  test_createMissingOverrides_method_emptyClassBody() async {
-    await resolveTestUnit('''
-abstract class A {
-  void foo();
-}
-
-class B extends A {}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-abstract class A {
-  void foo();
-}
-
-class B extends A {
-  @override
-  void foo() {
-    // TODO: implement foo
-  }
-}
-''');
-  }
-
-  test_createMissingOverrides_method_generic() async {
-    await resolveTestUnit('''
-class C<T> {}
-class V<E> {}
-
-abstract class A {
-  E1 foo<E1, E2 extends C<int>>(V<E2> v);
-}
-
-class B implements A {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-class C<T> {}
-class V<E> {}
-
-abstract class A {
-  E1 foo<E1, E2 extends C<int>>(V<E2> v);
-}
-
-class B implements A {
-  @override
-  E1 foo<E1, E2 extends C<int>>(V<E2> v) {
-    // TODO: implement foo
-    return null;
-  }
-}
-''');
-  }
-
-  test_createMissingOverrides_method_genericClass2() async {
-    await resolveTestUnit('''
-class A<R> {
-  R foo(int a) => null;
-}
-
-class B<R> extends A<R> {
-  R bar(double b) => null;
-}
-
-class X implements B<bool> {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-class A<R> {
-  R foo(int a) => null;
-}
-
-class B<R> extends A<R> {
-  R bar(double b) => null;
-}
-
-class X implements B<bool> {
-  @override
-  bool bar(double b) {
-    // TODO: implement bar
-    return null;
-  }
-
-  @override
-  bool foo(int a) {
-    // TODO: implement foo
-    return null;
-  }
-}
-''');
-  }
-
-  test_createMissingOverrides_method_generic_withBounds() async {
-    // https://github.com/dart-lang/sdk/issues/31199
-    await resolveTestUnit('''
-abstract class A<K, V> {
-  List<T> foo<T extends V>(K key);
-}
-
-class B<K, V> implements A<K, V> {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-abstract class A<K, V> {
-  List<T> foo<T extends V>(K key);
-}
-
-class B<K, V> implements A<K, V> {
-  @override
-  List<T> foo<T extends V>(K key) {
-    // TODO: implement foo
-    return null;
-  }
-}
-''');
-  }
-
-  test_createMissingOverrides_method_notEmptyClassBody() async {
-    await resolveTestUnit('''
-abstract class A {
-  void foo();
-}
-
-class B extends A {
-  void bar() {}
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-abstract class A {
-  void foo();
-}
-
-class B extends A {
-  void bar() {}
-
-  @override
-  void foo() {
-    // TODO: implement foo
-  }
-}
-''');
-  }
-
-  test_createMissingOverrides_operator() async {
-    await resolveTestUnit('''
-abstract class A {
-  int operator [](int index);
-  void operator []=(int index, String value);
-}
-
-class B extends A {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-abstract class A {
-  int operator [](int index);
-  void operator []=(int index, String value);
-}
-
-class B extends A {
-  @override
-  int operator [](int index) {
-    // TODO: implement []
-    return null;
-  }
-
-  @override
-  void operator []=(int index, String value) {
-    // TODO: implement []=
-  }
-}
-''');
-  }
-
-  test_createMissingOverrides_setter() async {
-    await resolveTestUnit('''
-abstract class A {
-  set s1(x);
-  set s2(int x);
-  void set s3(String x);
-}
-
-class B extends A {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MISSING_OVERRIDES, '''
-abstract class A {
-  set s1(x);
-  set s2(int x);
-  void set s3(String x);
-}
-
-class B extends A {
-  @override
-  void set s1(x) {
-    // TODO: implement s1
-  }
-
-  @override
-  void set s2(int x) {
-    // TODO: implement s2
-  }
-
-  @override
-  void set s3(String x) {
-    // TODO: implement s3
-  }
-}
-''');
-  }
-
-  test_createMixin() async {
-    await resolveTestUnit('''
-main() {
-  Test v = null;
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MIXIN, '''
-main() {
-  Test v = null;
-}
-
-mixin Test {
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['Test v =', 'Test {']);
-  }
-
-  test_createMixin_BAD_hasUnresolvedPrefix() async {
-    await resolveTestUnit('''
-main() {
-  prefix.Test v = null;
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_MIXIN);
-  }
-
-  test_createMixin_BAD_instanceCreation_withNew() async {
-    await resolveTestUnit('''
-main() {
-  new Test();
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_MIXIN);
-  }
-
-  test_createMixin_BAD_instanceCreation_withoutNew() async {
-    await resolveTestUnit('''
-main() {
-  Test();
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_MIXIN);
-  }
-
-  test_createMixin_inLibraryOfPrefix() async {
-    String libCode = r'''
-library my.lib;
-
-class A {}
-''';
-    addSource('/project/lib.dart', libCode);
-    await resolveTestUnit('''
-import 'lib.dart' as lib;
-
-main() {
-  lib.A a = null;
-  lib.Test t = null;
-}
-''');
-    AnalysisError error = await _findErrorToFix();
-    fix = await _assertHasFix(DartFixKind.CREATE_MIXIN, error);
-    change = fix.change;
-    // apply to "lib.dart"
-    List<SourceFileEdit> fileEdits = change.edits;
-    expect(fileEdits, hasLength(1));
-    SourceFileEdit fileEdit = change.edits[0];
-    expect(fileEdit.file, convertPath('/project/lib.dart'));
-    expect(SourceEdit.applySequence(libCode, fileEdit.edits), r'''
-library my.lib;
-
-class A {}
-
-mixin Test {
-}
-''');
-    expect(change.linkedEditGroups, hasLength(1));
-  }
-
-  test_createMixin_innerLocalFunction() async {
-    await resolveTestUnit('''
-f() {
-  g() {
-    Test v = null;
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MIXIN, '''
-f() {
-  g() {
-    Test v = null;
-  }
-}
-
-mixin Test {
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['Test v =', 'Test {']);
-  }
-
-  test_createMixin_itemOfList() async {
-    await resolveTestUnit('''
-main() {
-  var a = [Test];
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_MIXIN, '''
-main() {
-  var a = [Test];
-}
-
-mixin Test {
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['Test];', 'Test {']);
-  }
-
-  test_createMixin_itemOfList_inAnnotation() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode == StaticWarningCode.UNDEFINED_IDENTIFIER;
-    };
-    await resolveTestUnit('''
-class MyAnnotation {
-  const MyAnnotation(a, b);
-}
-@MyAnnotation(int, const [Test])
-main() {}
-''');
-    await assertHasFix(DartFixKind.CREATE_MIXIN, '''
-class MyAnnotation {
-  const MyAnnotation(a, b);
-}
-@MyAnnotation(int, const [Test])
-main() {}
-
-mixin Test {
-}
-''');
-    _assertLinkedGroup(change.linkedEditGroups[0], ['Test])', 'Test {']);
-  }
-
-  test_createNoSuchMethod_BAD_classTypeAlias() async {
-    await resolveTestUnit('''
-abstract class A {
-  m();
-}
-
-class B = Object with A;
-''');
-    await assertNoFix(
-      DartFixKind.CREATE_NO_SUCH_METHOD,
-    );
-  }
-
-  test_createNoSuchMethod_OK() async {
-    await resolveTestUnit('''
-abstract class A {
-  m1();
-  int m2();
-}
-
-class B extends A {
-  existing() {}
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_NO_SUCH_METHOD, '''
-abstract class A {
-  m1();
-  int m2();
-}
-
-class B extends A {
-  existing() {}
-
-  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
-}
-''');
-  }
-
-  test_creationFunction_forFunctionType_cascadeSecond() async {
-    await resolveTestUnit('''
-class A {
-  B ma() => null;
-}
-class B {
-  useFunction(int g(double a, String b)) {}
-}
-
-main() {
-  A a = new A();
-  a..ma().useFunction(test);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-class A {
-  B ma() => null;
-}
-class B {
-  useFunction(int g(double a, String b)) {}
-}
-
-main() {
-  A a = new A();
-  a..ma().useFunction(test);
-}
-
-int test(double a, String b) {
-}
-''');
-  }
-
-  test_creationFunction_forFunctionType_coreFunction() async {
-    await resolveTestUnit('''
-main() {
-  useFunction(g: test);
-}
-useFunction({Function g}) {}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  useFunction(g: test);
-}
-useFunction({Function g}) {}
-
-test() {
-}
-''');
-  }
-
-  test_creationFunction_forFunctionType_dynamicArgument() async {
-    await resolveTestUnit('''
-main() {
-  useFunction(test);
-}
-useFunction(int g(a, b)) {}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  useFunction(test);
-}
-useFunction(int g(a, b)) {}
-
-int test(a, b) {
-}
-''');
-  }
-
-  test_creationFunction_forFunctionType_function() async {
-    await resolveTestUnit('''
-main() {
-  useFunction(test);
-}
-useFunction(int g(double a, String b)) {}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  useFunction(test);
-}
-useFunction(int g(double a, String b)) {}
-
-int test(double a, String b) {
-}
-''');
-  }
-
-  test_creationFunction_forFunctionType_function_namedArgument() async {
-    await resolveTestUnit('''
-main() {
-  useFunction(g: test);
-}
-useFunction({int g(double a, String b)}) {}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  useFunction(g: test);
-}
-useFunction({int g(double a, String b)}) {}
-
-int test(double a, String b) {
-}
-''');
-  }
-
-  test_creationFunction_forFunctionType_importType() async {
-    addSource('/project/libA.dart', r'''
-library libA;
-class A {}
-''');
-    addSource('/project/libB.dart', r'''
-library libB;
-import 'libA.dart';
-useFunction(int g(A a)) {}
-''');
-    await resolveTestUnit('''
-import 'libB.dart';
-main() {
-  useFunction(test);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-import 'libA.dart';
-import 'libB.dart';
-main() {
-  useFunction(test);
-}
-
-int test(A a) {
-}
-''');
-  }
-
-  test_creationFunction_forFunctionType_method_enclosingClass_static() async {
-    await resolveTestUnit('''
-class A {
-  static foo() {
-    useFunction(test);
-  }
-}
-useFunction(int g(double a, String b)) {}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A {
-  static foo() {
-    useFunction(test);
-  }
-
-  static int test(double a, String b) {
-  }
-}
-useFunction(int g(double a, String b)) {}
-''');
-  }
-
-  test_creationFunction_forFunctionType_method_enclosingClass_static2() async {
-    await resolveTestUnit('''
-class A {
-  var f;
-  A() : f = useFunction(test);
-}
-useFunction(int g(double a, String b)) {}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A {
-  var f;
-  A() : f = useFunction(test);
-
-  static int test(double a, String b) {
-  }
-}
-useFunction(int g(double a, String b)) {}
-''');
-  }
-
-  test_creationFunction_forFunctionType_method_targetClass() async {
-    await resolveTestUnit('''
-main(A a) {
-  useFunction(a.test);
-}
-class A {
-}
-useFunction(int g(double a, String b)) {}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-main(A a) {
-  useFunction(a.test);
-}
-class A {
-  int test(double a, String b) {
-  }
-}
-useFunction(int g(double a, String b)) {}
-''');
-  }
-
-  test_creationFunction_forFunctionType_method_targetClass_hasOtherMember() async {
-    await resolveTestUnit('''
-main(A a) {
-  useFunction(a.test);
-}
-class A {
-  m() {}
-}
-useFunction(int g(double a, String b)) {}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-main(A a) {
-  useFunction(a.test);
-}
-class A {
-  m() {}
-
-  int test(double a, String b) {
-  }
-}
-useFunction(int g(double a, String b)) {}
-''');
-  }
-
-  test_creationFunction_forFunctionType_notFunctionType() async {
-    await resolveTestUnit('''
-main(A a) {
-  useFunction(a.test);
-}
-typedef A();
-useFunction(g) {}
-''');
-    await assertNoFix(DartFixKind.CREATE_METHOD);
-    await assertNoFix(DartFixKind.CREATE_FUNCTION);
-  }
-
-  test_creationFunction_forFunctionType_unknownTarget() async {
-    await resolveTestUnit('''
-main(A a) {
-  useFunction(a.test);
-}
-class A {
-}
-useFunction(g) {}
-''');
-    await assertNoFix(DartFixKind.CREATE_METHOD);
-  }
-
-  test_expectedToken_semicolon() async {
-    await resolveTestUnit('''
-main() {
-  print(0)
-}
-''');
-    await assertHasFix(DartFixKind.INSERT_SEMICOLON, '''
-main() {
-  print(0);
-}
-''');
-  }
-
-  test_illegalAsyncReturnType_adjacentNodes() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE;
-    };
-    await resolveTestUnit('''
-import 'dart:async';
-var v;int main() async => 0;
-''');
-    await assertHasFix(DartFixKind.REPLACE_RETURN_TYPE_FUTURE, '''
-import 'dart:async';
-var v;Future<int> main() async => 0;
-''');
-  }
-
-  test_illegalAsyncReturnType_asyncLibrary_import() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE;
-    };
-    await resolveTestUnit('''
-library main;
-int main() async {
-}
-''');
-    await assertHasFix(DartFixKind.REPLACE_RETURN_TYPE_FUTURE, '''
-library main;
-
-import 'dart:async';
-
-Future<int> main() async {
-}
-''');
-  }
-
-  test_illegalAsyncReturnType_asyncLibrary_usePrefix() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE;
-    };
-    await resolveTestUnit('''
-import 'dart:async' as al;
-int main() async {
-}
-''');
-    await assertHasFix(DartFixKind.REPLACE_RETURN_TYPE_FUTURE, '''
-import 'dart:async' as al;
-al.Future<int> main() async {
-}
-''');
-  }
-
-  test_illegalAsyncReturnType_complexTypeName() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE;
-    };
-    await resolveTestUnit('''
-import 'dart:async';
-List<int> main() async {
-}
-''');
-    await assertHasFix(DartFixKind.REPLACE_RETURN_TYPE_FUTURE, '''
-import 'dart:async';
-Future<List<int>> main() async {
-}
-''');
-  }
-
-  test_importLibraryPackage_preferDirectOverExport() async {
-    _configureMyPkg({'b.dart': 'class Test {}', 'a.dart': "export 'b.dart';"});
-    await resolveTestUnit('''
-main() {
-  Test test = null;
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'package:my_pkg/b.dart';
-
-main() {
-  Test test = null;
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT2, '''
-import 'package:my_pkg/a.dart';
-
-main() {
-  Test test = null;
-}
-''');
-  }
-
-  test_importLibraryPackage_preferDirectOverExport_src() async {
-    myPkgLibPath = '/my/src/packages/my_pkg/lib';
-    _configureMyPkg({'b.dart': 'class Test {}', 'a.dart': "export 'b.dart';"});
-    await resolveTestUnit('''
-main() {
-  Test test = null;
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'package:my_pkg/b.dart';
-
-main() {
-  Test test = null;
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT2, '''
-import 'package:my_pkg/a.dart';
-
-main() {
-  Test test = null;
-}
-''');
-  }
-
-  test_importLibraryProject_BAD_inLibSrc_differentContextRoot() async {
-    addPackageSource('bbb', 'b1.dart', r'''
-import 'src/b2.dart';
-''');
-    addPackageSource('bbb', 'src/b2.dart', 'class Test {}');
-    await resolveTestUnit('''
-import 'package:bbb/b1.dart';
-main() {
-  Test t;
-}
-''');
-    errorFilter = (AnalysisError error) {
-      return error.errorCode == StaticWarningCode.UNDEFINED_CLASS;
-    };
-    await assertNoFix(DartFixKind.IMPORT_LIBRARY_PROJECT3);
-  }
-
-  test_importLibraryProject_BAD_notInLib_BUILD() async {
-    testFile = '/project/lib/test.dart';
-    addSource('/other/test/lib.dart', 'class Test {}');
-    await resolveTestUnit('''
-main() {
-  Test t;
-}
-''');
-    await assertNoFix(DartFixKind.IMPORT_LIBRARY_PROJECT1);
-  }
-
-  test_importLibraryProject_BAD_notInLib_pubspec() async {
-    testFile = '/project/lib/test.dart';
-    addSource('/other/test/lib.dart', 'class Test {}');
-    await resolveTestUnit('''
-main() {
-  Test t;
-}
-''');
-    await assertNoFix(DartFixKind.IMPORT_LIBRARY_PROJECT1);
-  }
-
-  test_importLibraryProject_OK_inLibSrc_thisContextRoot() async {
-    testFile = '/project/lib/test.dart';
-    packageMap['project'] = [newFolder('/project/lib')];
-    addSource('/project/lib/src/lib.dart', 'class Test {}');
-    configureDriver();
-    await resolveTestUnit('''
-main() {
-  Test t;
-}
-''');
-    errorFilter = (AnalysisError error) {
-      return error.errorCode == StaticWarningCode.UNDEFINED_CLASS;
-    };
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT3, '''
-import 'package:project/src/lib.dart';
-
-main() {
-  Test t;
-}
-''');
-  }
-
-  test_importLibraryProject_withClass_annotation() async {
-    testFile = '/project/lib/test.dart';
-    addSource('/project/lib/lib.dart', '''
-library lib;
-class Test {
-  const Test(int p);
-}
-''');
-    await resolveTestUnit('''
-@Test(0)
-main() {
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'lib.dart';
-
-@Test(0)
-main() {
-}
-''');
-  }
-
-  test_importLibraryProject_withClass_hasOtherLibraryWithPrefix() async {
-    testFile = '/project/bin/test.dart';
-    addSource('/project/bin/a.dart', '''
-library a;
-class One {}
-''');
-    addSource('/project/bin/b.dart', '''
-library b;
-class One {}
-class Two {}
-''');
-    await resolveTestUnit('''
-import 'b.dart' show Two;
-main () {
-  new Two();
-  new One();
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'a.dart';
-import 'b.dart' show Two;
-main () {
-  new Two();
-  new One();
-}
-''');
-  }
-
-  test_importLibraryProject_withClass_inParentFolder() async {
-    testFile = '/project/bin/test.dart';
-    addSource('/project/lib.dart', '''
-library lib;
-class Test {}
-''');
-    await resolveTestUnit('''
-main() {
-  Test t = null;
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import '../lib.dart';
-
-main() {
-  Test t = null;
-}
-''');
-  }
-
-  test_importLibraryProject_withClass_inRelativeFolder() async {
-    testFile = '/project/bin/test.dart';
-    addSource('/project/lib/sub/folder/lib.dart', '''
-library lib;
-class Test {}
-''');
-    await resolveTestUnit('''
-main() {
-  Test t = null;
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import '../lib/sub/folder/lib.dart';
-
-main() {
-  Test t = null;
-}
-''');
-  }
-
-  test_importLibraryProject_withClass_inSameFolder() async {
-    testFile = '/project/bin/test.dart';
-    addSource('/project/bin/lib.dart', '''
-library lib;
-class Test {}
-''');
-    await resolveTestUnit('''
-main() {
-  Test t = null;
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'lib.dart';
-
-main() {
-  Test t = null;
-}
-''');
-  }
-
-  test_importLibraryProject_withClass_instanceCreation_const() async {
-    testFile = '/project/lib/test.dart';
-    addSource('/project/lib/lib.dart', '''
-class Test {
-  const Test();
-}
-''');
-    await resolveTestUnit('''
-main() {
-  return const Test();
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'lib.dart';
-
-main() {
-  return const Test();
-}
-''');
-  }
-
-  test_importLibraryProject_withClass_instanceCreation_const_namedConstructor() async {
-    testFile = '/project/lib/test.dart';
-    addSource('/project/lib/lib.dart', '''
-class Test {
-  const Test.named();
-}
-''');
-    await resolveTestUnit('''
-main() {
-  const Test.named();
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'lib.dart';
-
-main() {
-  const Test.named();
-}
-''');
-  }
-
-  test_importLibraryProject_withClass_instanceCreation_implicit() async {
-    testFile = '/project/lib/test.dart';
-    addSource('/project/lib/lib.dart', '''
-class Test {
-  const Test();
-}
-''');
-    await resolveTestUnit('''
-main() {
-  return Test();
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'lib.dart';
-
-main() {
-  return Test();
-}
-''');
-  }
-
-  test_importLibraryProject_withClass_instanceCreation_new() async {
-    testFile = '/project/lib/test.dart';
-    addSource('/project/lib/lib.dart', '''
-class Test {
-  const Test();
-}
-''');
-    await resolveTestUnit('''
-main() {
-  return new Test();
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'lib.dart';
-
-main() {
-  return new Test();
-}
-''');
-  }
-
-  test_importLibraryProject_withClass_instanceCreation_new_namedConstructor() async {
-    testFile = '/project/lib/test.dart';
-    addSource('/project/lib/lib.dart', '''
-class Test {
-  Test.named();
-}
-''');
-    await resolveTestUnit('''
-main() {
-  new Test.named();
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'lib.dart';
-
-main() {
-  new Test.named();
-}
-''');
-  }
-
-  test_importLibraryProject_withFunction() async {
-    testFile = '/project/lib/test.dart';
-    addSource('/project/lib/lib.dart', '''
-library lib;
-myFunction() {}
-''');
-    await resolveTestUnit('''
-main() {
-  myFunction();
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'lib.dart';
-
-main() {
-  myFunction();
-}
-''');
-  }
-
-  test_importLibraryProject_withFunction_unresolvedMethod() async {
-    testFile = '/project/lib/test.dart';
-    addSource('/project/lib/lib.dart', '''
-library lib;
-myFunction() {}
-''');
-    await resolveTestUnit('''
-class A {
-  main() {
-    myFunction();
-  }
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'lib.dart';
-
-class A {
-  main() {
-    myFunction();
-  }
-}
-''');
-  }
-
-  test_importLibraryProject_withFunctionTypeAlias() async {
-    testFile = '/project/bin/test.dart';
-    addSource('/project/bin/lib.dart', '''
-library lib;
-typedef MyFunction();
-''');
-    await resolveTestUnit('''
-main() {
-  MyFunction t = null;
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'lib.dart';
-
-main() {
-  MyFunction t = null;
-}
-''');
-  }
-
-  test_importLibraryProject_withTopLevelVariable() async {
-    testFile = '/project/lib/test.dart';
-    addSource('/project/lib/lib.dart', '''
-library lib;
-int MY_VAR = 42;
-''');
-    await resolveTestUnit('''
-main() {
-  print(MY_VAR);
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PROJECT1, '''
-import 'lib.dart';
-
-main() {
-  print(MY_VAR);
-}
-''');
-  }
-
-  test_importLibrarySdk_withClass_AsExpression() async {
-    await resolveTestUnit('''
-main(p) {
-  p as Future;
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:async';
-
-main(p) {
-  p as Future;
-}
-''');
-  }
-
-  test_importLibrarySdk_withClass_instanceCreation_explicitNew() async {
-    await resolveTestUnit('''
-class C {
-  foo() {
-    new Future();
-  }
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:async';
-
-class C {
-  foo() {
-    new Future();
-  }
-}
-''');
-  }
-
-  test_importLibrarySdk_withClass_instanceCreation_explicitNew_namedConstructor() async {
-    await resolveTestUnit('''
-class C {
-  foo() {
-    new Future.value(0);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:async';
-
-class C {
-  foo() {
-    new Future.value(0);
-  }
-}
-''');
-  }
-
-  test_importLibrarySdk_withClass_instanceCreation_implicitNew() async {
-    configurePreviewDart2();
-    await resolveTestUnit('''
-class C {
-  foo() {
-    Future();
-  }
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:async';
-
-class C {
-  foo() {
-    Future();
-  }
-}
-''');
-  }
-
-  test_importLibrarySdk_withClass_instanceCreation_implicitNew_namedConstructor() async {
-    configurePreviewDart2();
-    await resolveTestUnit('''
-class C {
-  foo() {
-    Future.value(0);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:async';
-
-class C {
-  foo() {
-    Future.value(0);
-  }
-}
-''');
-  }
-
-  test_importLibrarySdk_withClass_invocationTarget() async {
-    await resolveTestUnit('''
-main() {
-  Future.wait(null);
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:async';
-
-main() {
-  Future.wait(null);
-}
-''');
-  }
-
-  test_importLibrarySdk_withClass_IsExpression() async {
-    await resolveTestUnit('''
-main(p) {
-  p is Future;
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:async';
-
-main(p) {
-  p is Future;
-}
-''');
-  }
-
-  test_importLibrarySdk_withClass_itemOfList() async {
-    await resolveTestUnit('''
-main() {
-  var a = [Future];
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:async';
-
-main() {
-  var a = [Future];
-}
-''');
-  }
-
-  test_importLibrarySdk_withClass_itemOfList_inAnnotation() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode == StaticWarningCode.UNDEFINED_IDENTIFIER;
-    };
-    await resolveTestUnit('''
-class MyAnnotation {
-  const MyAnnotation(a, b);
-}
-@MyAnnotation(int, const [Future])
-main() {}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:async';
-
-class MyAnnotation {
-  const MyAnnotation(a, b);
-}
-@MyAnnotation(int, const [Future])
-main() {}
-''');
-  }
-
-  test_importLibrarySdk_withClass_typeAnnotation() async {
-    await resolveTestUnit('''
-main() {
-  Future f = null;
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:async';
-
-main() {
-  Future f = null;
-}
-''');
-  }
-
-  test_importLibrarySdk_withClass_typeAnnotation_PrefixedIdentifier() async {
-    await resolveTestUnit('''
-main() {
-  Future.wait;
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:async';
-
-main() {
-  Future.wait;
-}
-''');
-  }
-
-  test_importLibrarySdk_withClass_typeArgument() async {
-    await resolveTestUnit('''
-main() {
-  List<Future> futures = [];
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:async';
-
-main() {
-  List<Future> futures = [];
-}
-''');
-  }
-
-  test_importLibrarySdk_withTopLevelVariable() async {
-    await resolveTestUnit('''
-main() {
-  print(PI);
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:math';
-
-main() {
-  print(PI);
-}
-''');
-  }
-
-  test_importLibrarySdk_withTopLevelVariable_annotation() async {
-    await resolveTestUnit('''
-@PI
-main() {
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SDK, '''
-import 'dart:math';
-
-@PI
-main() {
-}
-''');
-  }
-
-  test_importLibraryShow_project() async {
-    testFile = '/project/bin/test.dart';
-    addSource('/project/bin/lib.dart', '''
-class A {}
-class B {}
-''');
-    await resolveTestUnit('''
-import 'lib.dart' show A;
-main() {
-  A a;
-  B b;
-}
-''');
-    await assertNoFix(DartFixKind.IMPORT_LIBRARY_PROJECT1);
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SHOW, '''
-import 'lib.dart' show A, B;
-main() {
-  A a;
-  B b;
-}
-''');
-  }
-
-  test_importLibraryShow_sdk() async {
-    await resolveTestUnit('''
-import 'dart:async' show Stream;
-main() {
-  Stream s = null;
-  Future f = null;
-}
-''');
-    await assertNoFix(DartFixKind.IMPORT_LIBRARY_SDK);
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_SHOW, '''
-import 'dart:async' show Future, Stream;
-main() {
-  Stream s = null;
-  Future f = null;
-}
-''');
-  }
-
-  test_impreciseIntAsDouble() async {
-    await resolveTestUnit('''
-double x = 1000000000000000000000000;
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO_NEAREST_PRECISE_VALUE, '''
-double x = 999999999999999983222784;
-''');
-  }
-
-  test_impreciseIntAsDouble_asCapitalHex() async {
-    await resolveTestUnit('''
-double x = 0X1000000000000000000000001;
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO_NEAREST_PRECISE_VALUE, '''
-double x = 0x1000000000000000000000000;
-''');
-  }
-
-  test_impreciseIntAsDouble_asHex() async {
-    await resolveTestUnit('''
-double x = 0x1000000000000000000000001;
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO_NEAREST_PRECISE_VALUE, '''
-double x = 0x1000000000000000000000000;
-''');
-  }
-
-  test_impreciseIntAsDouble_maxValue() async {
-    await resolveTestUnit('''
-double x = 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000;
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO_NEAREST_PRECISE_VALUE, '''
-double x = 179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368;
-''');
-  }
-
-  test_impreciseIntAsDouble_maxValue_asHex() async {
-    await resolveTestUnit('''
-double x = 0x100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000;
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO_NEAREST_PRECISE_VALUE, '''
-double x = 0xFFFFFFFFFFFFF800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000;
-''');
-  }
-
-  test_isNotNull() async {
-    await resolveTestUnit('''
-main(p) {
-  p is! Null;
-}
-''');
-    await assertHasFix(DartFixKind.USE_NOT_EQ_NULL, '''
-main(p) {
-  p != null;
-}
-''');
-  }
-
-  test_isNotNull_all() async {
-    await resolveTestUnit('''
-main(p, q) {
-  p is! Null;
-  q is! Null;
-}
-''');
-    await assertHasFixAllFix(
-        HintCode.TYPE_CHECK_IS_NOT_NULL, DartFixKind.USE_NOT_EQ_NULL, '''
-main(p, q) {
-  p != null;
-  q != null;
-}
-''');
-  }
-
-  test_isNull() async {
-    await resolveTestUnit('''
-main(p) {
-  p is Null;
-}
-''');
-    await assertHasFix(DartFixKind.USE_EQ_EQ_NULL, '''
-main(p) {
-  p == null;
-}
-''');
-  }
-
-  test_isNull_all() async {
-    await resolveTestUnit('''
-main(p, q) {
-  p is Null;
-  q is Null;
-}
-''');
-    await assertHasFixAllFix(
-        HintCode.TYPE_CHECK_IS_NULL, DartFixKind.USE_EQ_EQ_NULL, '''
-main(p, q) {
-  p == null;
-  q == null;
-}
-''');
-  }
-
-  test_makeEnclosingClassAbstract_declaresAbstractMethod() async {
-    await resolveTestUnit('''
-class A {
-  m();
-}
-''');
-    await assertHasFix(DartFixKind.MAKE_CLASS_ABSTRACT, '''
-abstract class A {
-  m();
-}
-''');
-  }
-
-  test_makeEnclosingClassAbstract_inheritsAbstractMethod() async {
-    await resolveTestUnit('''
-abstract class A {
-  m();
-}
-class B extends A {
-}
-''');
-    await assertHasFix(DartFixKind.MAKE_CLASS_ABSTRACT, '''
-abstract class A {
-  m();
-}
-abstract class B extends A {
-}
-''');
-  }
-
-  test_makeFieldNotFinal_hasType() async {
-    await resolveTestUnit('''
-class A {
-  final int fff = 1;
-  main() {
-    fff = 2;
-  }
-}
-''');
-    await assertHasFix(DartFixKind.MAKE_FIELD_NOT_FINAL, '''
-class A {
-  int fff = 1;
-  main() {
-    fff = 2;
-  }
-}
-''');
-  }
-
-  test_makeFieldNotFinal_noType() async {
-    await resolveTestUnit('''
-class A {
-  final fff = 1;
-  main() {
-    fff = 2;
-  }
-}
-''');
-    await assertHasFix(DartFixKind.MAKE_FIELD_NOT_FINAL, '''
-class A {
-  var fff = 1;
-  main() {
-    fff = 2;
-  }
-}
-''');
-  }
-
-  test_moveTypeArgumentsToClass_explicitConst() async {
-    await resolveTestUnit('''
-main() {
-  const C.named<int>();
-}
-class C<E> {
-  const C.named();
-}
-''');
-    await assertHasFix(DartFixKind.MOVE_TYPE_ARGUMENTS_TO_CLASS, '''
-main() {
-  const C<int>.named();
-}
-class C<E> {
-  const C.named();
-}
-''');
-  }
-
-  test_moveTypeArgumentsToClass_explicitNew() async {
-    await resolveTestUnit('''
-main() {
-  new C.named<int>();
-}
-class C<E> {
-  C.named();
-}
-''');
-    await assertHasFix(DartFixKind.MOVE_TYPE_ARGUMENTS_TO_CLASS, '''
-main() {
-  new C<int>.named();
-}
-class C<E> {
-  C.named();
-}
-''');
-  }
-
-  test_moveTypeArgumentsToClass_explicitNew_BAD_alreadyThere() async {
-    await resolveTestUnit('''
-main() {
-  new C<String>.named<int>();
-}
-class C<E> {
-  C.named();
-}
-''');
-    await assertNoFix(DartFixKind.MOVE_TYPE_ARGUMENTS_TO_CLASS);
-  }
-
-  test_moveTypeArgumentsToClass_explicitNew_BAD_wrongNumber() async {
-    await resolveTestUnit('''
-main() {
-  new C.named<int, String>();
-}
-class C<E> {
-  C.named();
-}
-''');
-    await assertNoFix(DartFixKind.MOVE_TYPE_ARGUMENTS_TO_CLASS);
-  }
-
-  test_moveTypeArgumentsToClass_implicitConst() async {
-    await resolveTestUnit('''
-main() {
-  const C c = C.named<int>();
-}
-class C<E> {
-  const C.named();
-}
-''');
-    await assertHasFix(DartFixKind.MOVE_TYPE_ARGUMENTS_TO_CLASS, '''
-main() {
-  const C c = C<int>.named();
-}
-class C<E> {
-  const C.named();
-}
-''');
-  }
-
-  test_moveTypeArgumentsToClass_implicitNew() async {
-    await resolveTestUnit('''
-main() {
-  C.named<int>();
-}
-class C<E> {
-  C.named();
-}
-''');
-    await assertHasFix(DartFixKind.MOVE_TYPE_ARGUMENTS_TO_CLASS, '''
-main() {
-  C<int>.named();
-}
-class C<E> {
-  C.named();
-}
-''');
-  }
-
-  test_noException_1() async {
-    await resolveTestUnit('''
-main(p) {
-  p i s Null;
-}''');
-    List<AnalysisError> errors = await _computeErrors();
-    for (var error in errors) {
-      await _computeFixes(error);
-    }
-  }
-
-  test_nonBoolCondition_addNotNull() async {
-    await resolveTestUnit('''
-main(String p) {
-  if (p) {
-    print(p);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.ADD_NE_NULL, '''
-main(String p) {
-  if (p != null) {
-    print(p);
-  }
-}
-''');
-  }
-
-  test_nonBoolCondition_addNotNull_all() async {
-    await resolveTestUnit('''
-main(String p, String q) {
-  if (p) {
-    print(p);
-  }
-  if (q) {
-    print(q);
-  }
-}
-''');
-    await assertHasFixAllFix(
-        StaticTypeWarningCode.NON_BOOL_CONDITION, DartFixKind.ADD_NE_NULL, '''
-main(String p, String q) {
-  if (p != null) {
-    print(p);
-  }
-  if (q != null) {
-    print(q);
-  }
-}
-''');
-  }
-
-  test_removeDeadCode_condition() async {
-    await resolveTestUnit('''
-main(int p) {
-  if (true || p > 5) {
-    print(1);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_DEAD_CODE, '''
-main(int p) {
-  if (true) {
-    print(1);
-  }
-}
-''');
-  }
-
-  test_removeDeadCode_statements_one() async {
-    await resolveTestUnit('''
-int main() {
-  print(0);
-  return 42;
-  print(1);
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_DEAD_CODE, '''
-int main() {
-  print(0);
-  return 42;
-}
-''');
-  }
-
-  test_removeDeadCode_statements_two() async {
-    await resolveTestUnit('''
-int main() {
-  print(0);
-  return 42;
-  print(1);
-  print(2);
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_DEAD_CODE, '''
-int main() {
-  print(0);
-  return 42;
-}
-''');
-  }
-
-  test_removeParentheses_inGetterDeclaration() async {
-    await resolveTestUnit('''
-class A {
-  int get foo() => 0;
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_PARAMETERS_IN_GETTER_DECLARATION, '''
-class A {
-  int get foo => 0;
-}
-''');
-  }
-
-  test_removeParentheses_inGetterInvocation() async {
-    await resolveTestUnit('''
-class A {
-  int get foo => 0;
-}
-main(A a) {
-  a.foo();
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_PARENTHESIS_IN_GETTER_INVOCATION, '''
-class A {
-  int get foo => 0;
-}
-main(A a) {
-  a.foo;
-}
-''');
-  }
-
-  test_removeTypeArguments_explicitConst() async {
-    await resolveTestUnit('''
-main() {
-  const C.named<int>();
-}
-class C<E> {
-  const C.named();
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_TYPE_ARGUMENTS, '''
-main() {
-  const C.named();
-}
-class C<E> {
-  const C.named();
-}
-''');
-  }
-
-  test_removeTypeArguments_explicitNew() async {
-    await resolveTestUnit('''
-main() {
-  new C.named<int>();
-}
-class C<E> {
-  C.named();
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_TYPE_ARGUMENTS, '''
-main() {
-  new C.named();
-}
-class C<E> {
-  C.named();
-}
-''');
-  }
-
-  test_removeTypeArguments_implicitConst() async {
-    await resolveTestUnit('''
-main() {
-  const C c = C.named<int>();
-}
-class C<E> {
-  const C.named();
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_TYPE_ARGUMENTS, '''
-main() {
-  const C c = C.named();
-}
-class C<E> {
-  const C.named();
-}
-''');
-  }
-
-  test_removeTypeArguments_implicitNew() async {
-    await resolveTestUnit('''
-main() {
-  C.named<int>();
-}
-class C<E> {
-  C.named();
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_TYPE_ARGUMENTS, '''
-main() {
-  C.named();
-}
-class C<E> {
-  C.named();
-}
-''');
-  }
-
-  test_removeUnnecessaryCast_assignment() async {
-    await resolveTestUnit('''
-main(Object p) {
-  if (p is String) {
-    String v = ((p as String));
-  }
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_UNNECESSARY_CAST, '''
-main(Object p) {
-  if (p is String) {
-    String v = p;
-  }
-}
-''');
-  }
-
-  test_removeUnnecessaryCast_assignment_all() async {
-    await resolveTestUnit('''
-main(Object p, Object q) {
-  if (p is String) {
-    String v = ((p as String));
-  }
-  if (q is int) {
-    int v = ((q as int));
-  }
-}
-''');
-    await assertHasFixAllFix(
-        HintCode.UNNECESSARY_CAST, DartFixKind.REMOVE_UNNECESSARY_CAST, '''
-main(Object p, Object q) {
-  if (p is String) {
-    String v = p;
-  }
-  if (q is int) {
-    int v = q;
-  }
-}
-''');
-  }
-
-  test_removeUnusedCatchClause() async {
-    errorFilter = (AnalysisError error) => true;
-    await resolveTestUnit('''
-main() {
-  try {
-    throw 42;
-  } on int catch (e) {
-  }
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_UNUSED_CATCH_CLAUSE, '''
-main() {
-  try {
-    throw 42;
-  } on int {
-  }
-}
-''');
-  }
-
-  test_removeUnusedCatchStack() async {
-    errorFilter = (AnalysisError error) => true;
-    await resolveTestUnit('''
-main() {
-  try {
-    throw 42;
-  } catch (e, stack) {
-  }
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_UNUSED_CATCH_STACK, '''
-main() {
-  try {
-    throw 42;
-  } catch (e) {
-  }
-}
-''');
-  }
-
-  test_removeUnusedImport() async {
-    await resolveTestUnit('''
-import 'dart:math';
-main() {
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_UNUSED_IMPORT, '''
-main() {
-}
-''');
-  }
-
-  test_removeUnusedImport_all() async {
-    await resolveTestUnit('''
-import 'dart:math';
-import 'dart:math';
-import 'dart:math';
-main() {
-}
-''');
-    await assertHasFixAllFix(
-        HintCode.UNUSED_IMPORT, DartFixKind.REMOVE_UNUSED_IMPORT, '''
-main() {
-}
-''');
-  }
-
-  test_removeUnusedImport_all_diverseImports() async {
-    await resolveTestUnit('''
-import 'dart:math';
-import 'dart:math';
-import 'dart:async';
-main() {
-}
-''');
-    await assertHasFixAllFix(
-        HintCode.UNUSED_IMPORT, DartFixKind.REMOVE_UNUSED_IMPORT, '''
-main() {
-}
-''');
-  }
-
-  test_removeUnusedImport_all_diverseImports2() async {
-    await resolveTestUnit('''
-import 'dart:async';
-import 'dart:math' as math;
-import 'dart:async';
-
-var tau = math.pi * 2;
-
-main() {
-}
-''');
-    await assertHasFixAllFix(
-        HintCode.UNUSED_IMPORT, DartFixKind.REMOVE_UNUSED_IMPORT, '''
-import 'dart:math' as math;
-
-var tau = math.pi * 2;
-
-main() {
-}
-''');
-  }
-
-  test_removeUnusedImport_all_singleLine() async {
-    await resolveTestUnit('''
-import 'dart:math'; import 'dart:math'; import 'dart:math';
-main() {
-}
-''');
-    await assertHasFixAllFix(
-        HintCode.UNUSED_IMPORT, DartFixKind.REMOVE_UNUSED_IMPORT, '''
-main() {
-}
-''');
-  }
-
-  test_removeUnusedImport_anotherImportOnLine() async {
-    await resolveTestUnit('''
-import 'dart:math'; import 'dart:async';
-
-main() {
-  Future f;
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_UNUSED_IMPORT, '''
-import 'dart:async';
-
-main() {
-  Future f;
-}
-''');
-  }
-
-  test_removeUnusedImport_severalLines() async {
-    await resolveTestUnit('''
-import
-  'dart:math';
-main() {
-}
-''');
-    await assertHasFix(DartFixKind.REMOVE_UNUSED_IMPORT, '''
-main() {
-}
-''');
-  }
-
-  test_replaceVarWithDynamic() async {
-    errorFilter = (AnalysisError error) {
-      return error.errorCode == ParserErrorCode.VAR_AS_TYPE_NAME;
-    };
-    await resolveTestUnit('''
-class A {
-  Map<String, var> m;
-}
-''');
-    await assertHasFix(DartFixKind.REPLACE_VAR_WITH_DYNAMIC, '''
-class A {
-  Map<String, dynamic> m;
-}
-''');
-  }
-
-  test_replaceWithConstInstanceCreation_explicitNew() async {
-    await resolveTestUnit('''
-class A {
-  const A();
-}
-const a = new A();
-''');
-    await assertHasFix(DartFixKind.USE_CONST, '''
-class A {
-  const A();
-}
-const a = const A();
-''');
-  }
-
-  test_undefinedClass_useSimilar_BAD_prefixed() async {
-    await resolveTestUnit('''
-import 'dart:async' as c;
-main() {
-  c.Fture v = null;
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-import 'dart:async' as c;
-main() {
-  c.Future v = null;
-}
-''');
-  }
-
-  test_undefinedClass_useSimilar_fromImport() async {
-    await resolveTestUnit('''
-main() {
-  Stirng s = 'abc';
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-main() {
-  String s = 'abc';
-}
-''');
-  }
-
-  test_undefinedClass_useSimilar_fromThisLibrary() async {
-    await resolveTestUnit('''
-class MyClass {}
-main() {
-  MyCalss v = null;
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-class MyClass {}
-main() {
-  MyClass v = null;
-}
-''');
-  }
-
-  test_undefinedFunction_create_bottomArgument() async {
-    await resolveTestUnit('''
-main() {
-  test(throw 42);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  test(throw 42);
-}
-
-void test(param0) {
-}
-''');
-  }
-
-  test_undefinedFunction_create_duplicateArgumentNames() async {
-    await resolveTestUnit('''
-class C {
-  int x;
-}
-
-foo(C c1, C c2) {
-  bar(c1.x, c2.x);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-class C {
-  int x;
-}
-
-foo(C c1, C c2) {
-  bar(c1.x, c2.x);
-}
-
-void bar(int x, int x2) {
-}
-''');
-  }
-
-  test_undefinedFunction_create_dynamicArgument() async {
-    await resolveTestUnit('''
-main() {
-  dynamic v;
-  test(v);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  dynamic v;
-  test(v);
-}
-
-void test(v) {
-}
-''');
-  }
-
-  test_undefinedFunction_create_dynamicReturnType() async {
-    await resolveTestUnit('''
-main() {
-  dynamic v = test();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  dynamic v = test();
-}
-
-test() {
-}
-''');
-  }
-
-  test_undefinedFunction_create_fromFunction() async {
-    await resolveTestUnit('''
-main() {
-  int v = myUndefinedFunction(1, 2.0, '3');
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  int v = myUndefinedFunction(1, 2.0, '3');
-}
-
-int myUndefinedFunction(int i, double d, String s) {
-}
-''');
-  }
-
-  test_undefinedFunction_create_fromMethod() async {
-    await resolveTestUnit('''
-class A {
-  main() {
-    int v = myUndefinedFunction(1, 2.0, '3');
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-class A {
-  main() {
-    int v = myUndefinedFunction(1, 2.0, '3');
-  }
-}
-
-int myUndefinedFunction(int i, double d, String s) {
-}
-''');
-  }
-
-  test_undefinedFunction_create_generic_BAD() async {
-    await resolveTestUnit('''
-class A<T> {
-  Map<int, T> items;
-  main() {
-    process(items);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-class A<T> {
-  Map<int, T> items;
-  main() {
-    process(items);
-  }
-}
-
-void process(Map items) {
-}
-''');
-  }
-
-  test_undefinedFunction_create_generic_OK() async {
-    await resolveTestUnit('''
-class A {
-  List<int> items;
-  main() {
-    process(items);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-class A {
-  List<int> items;
-  main() {
-    process(items);
-  }
-}
-
-void process(List<int> items) {
-}
-''');
-    _assertLinkedGroup(
-        change.linkedEditGroups[2],
-        ['List<int> items) {'],
-        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
-            ['List<int>', 'Iterable<int>', 'Object']));
-  }
-
-  test_undefinedFunction_create_importType() async {
-    addSource('/project/lib.dart', r'''
-library lib;
-import 'dart:async';
-Future getFuture() => null;
-''');
-    await resolveTestUnit('''
-import 'lib.dart';
-main() {
-  test(getFuture());
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-import 'dart:async';
-
-import 'lib.dart';
-main() {
-  test(getFuture());
-}
-
-void test(Future future) {
-}
-''');
-  }
-
-  test_undefinedFunction_create_nullArgument() async {
-    await resolveTestUnit('''
-main() {
-  test(null);
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  test(null);
-}
-
-void test(param0) {
-}
-''');
-  }
-
-  test_undefinedFunction_create_returnType_bool_expressions() async {
-    await assert_undefinedFunction_create_returnType_bool("!test();");
-    await assert_undefinedFunction_create_returnType_bool("b && test();");
-    await assert_undefinedFunction_create_returnType_bool("test() && b;");
-    await assert_undefinedFunction_create_returnType_bool("b || test();");
-    await assert_undefinedFunction_create_returnType_bool("test() || b;");
-  }
-
-  test_undefinedFunction_create_returnType_bool_statements() async {
-    await assert_undefinedFunction_create_returnType_bool("assert ( test() );");
-    await assert_undefinedFunction_create_returnType_bool("if ( test() ) {}");
-    await assert_undefinedFunction_create_returnType_bool(
-        "while ( test() ) {}");
-    await assert_undefinedFunction_create_returnType_bool(
-        "do {} while ( test() );");
-  }
-
-  test_undefinedFunction_create_returnType_fromAssignment_eq() async {
-    await resolveTestUnit('''
-main() {
-  int v;
-  v = myUndefinedFunction();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  int v;
-  v = myUndefinedFunction();
-}
-
-int myUndefinedFunction() {
-}
-''');
-  }
-
-  test_undefinedFunction_create_returnType_fromAssignment_plusEq() async {
-    await resolveTestUnit('''
-main() {
-  int v;
-  v += myUndefinedFunction();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  int v;
-  v += myUndefinedFunction();
-}
-
-num myUndefinedFunction() {
-}
-''');
-  }
-
-  test_undefinedFunction_create_returnType_fromBinary_right() async {
-    await resolveTestUnit('''
-main() {
-  0 + myUndefinedFunction();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  0 + myUndefinedFunction();
-}
-
-num myUndefinedFunction() {
-}
-''');
-  }
-
-  test_undefinedFunction_create_returnType_fromInitializer() async {
-    await resolveTestUnit('''
-main() {
-  int v = myUndefinedFunction();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  int v = myUndefinedFunction();
-}
-
-int myUndefinedFunction() {
-}
-''');
-  }
-
-  test_undefinedFunction_create_returnType_fromInvocationArgument() async {
-    await resolveTestUnit('''
-foo(int p) {}
-main() {
-  foo( myUndefinedFunction() );
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-foo(int p) {}
-main() {
-  foo( myUndefinedFunction() );
-}
-
-int myUndefinedFunction() {
-}
-''');
-  }
-
-  test_undefinedFunction_create_returnType_fromReturn() async {
-    await resolveTestUnit('''
-int main() {
-  return myUndefinedFunction();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-int main() {
-  return myUndefinedFunction();
-}
-
-int myUndefinedFunction() {
-}
-''');
-  }
-
-  test_undefinedFunction_create_returnType_void() async {
-    await resolveTestUnit('''
-main() {
-  myUndefinedFunction();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_FUNCTION, '''
-main() {
-  myUndefinedFunction();
-}
-
-void myUndefinedFunction() {
-}
-''');
-  }
-
-  test_undefinedFunction_useSimilar_fromImport() async {
-    await resolveTestUnit('''
-main() {
-  pritn(0);
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-main() {
-  print(0);
-}
-''');
-  }
-
-  test_undefinedFunction_useSimilar_prefixed_fromImport() async {
-    await resolveTestUnit('''
-import 'dart:core' as c;
-main() {
-  c.prnt(42);
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-import 'dart:core' as c;
-main() {
-  c.print(42);
-}
-''');
-  }
-
-  test_undefinedFunction_useSimilar_prefixed_ignoreLocal() async {
-    await resolveTestUnit('''
-import 'dart:async' as c;
-main() {
-  c.main();
-}
-''');
-    await assertNoFix(DartFixKind.CHANGE_TO);
-  }
-
-  test_undefinedFunction_useSimilar_thisLibrary() async {
-    await resolveTestUnit('''
-myFunction() {}
-main() {
-  myFuntcion();
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-myFunction() {}
-main() {
-  myFunction();
-}
-''');
-  }
-
-  test_undefinedGetter_useSimilar_hint() async {
-    await resolveTestUnit('''
-class A {
-  int myField;
-}
-main(A a) {
-  var x = a;
-  print(x.myFild);
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-class A {
-  int myField;
-}
-main(A a) {
-  var x = a;
-  print(x.myField);
-}
-''');
-  }
-
-  test_undefinedGetter_useSimilar_qualified() async {
-    await resolveTestUnit('''
-class A {
-  int myField;
-}
-main(A a) {
-  print(a.myFild);
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-class A {
-  int myField;
-}
-main(A a) {
-  print(a.myField);
-}
-''');
-  }
-
-  test_undefinedGetter_useSimilar_qualified_static() async {
-    await resolveTestUnit('''
-class A {
-  static int MY_NAME = 1;
-}
-main() {
-  A.MY_NAM;
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-class A {
-  static int MY_NAME = 1;
-}
-main() {
-  A.MY_NAME;
-}
-''');
-  }
-
-  test_undefinedGetter_useSimilar_unqualified() async {
-    await resolveTestUnit('''
-class A {
-  int myField;
-  main() {
-    print(myFild);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-class A {
-  int myField;
-  main() {
-    print(myField);
-  }
-}
-''');
-  }
-
-  test_undefinedMethod_create_BAD_inSDK() async {
-    await resolveTestUnit('''
-main() {
-  List.foo();
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_METHOD);
-  }
-
-  test_undefinedMethod_create_BAD_targetIsEnum() async {
-    await resolveTestUnit('''
-enum MyEnum {A, B}
-main() {
-  MyEnum.foo();
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_METHOD);
-  }
-
-  test_undefinedMethod_create_generic_BAD_argumentType() async {
-    await resolveTestUnit('''
-class A<T> {
-  B b;
-  Map<int, T> items;
-  main() {
-    b.process(items);
-  }
-}
-
-class B {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A<T> {
-  B b;
-  Map<int, T> items;
-  main() {
-    b.process(items);
-  }
-}
-
-class B {
-  void process(Map items) {}
-}
-''');
-  }
-
-  test_undefinedMethod_create_generic_BAD_returnType() async {
-    await resolveTestUnit('''
-class A<T> {
-  main() {
-    T t = new B().compute();
-  }
-}
-
-class B {
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A<T> {
-  main() {
-    T t = new B().compute();
-  }
-}
-
-class B {
-  compute() {}
-}
-''');
-  }
-
-  test_undefinedMethod_create_generic_OK_literal() async {
-    await resolveTestUnit('''
-class A {
-  B b;
-  List<int> items;
-  main() {
-    b.process(items);
-  }
-}
-
-class B {}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A {
-  B b;
-  List<int> items;
-  main() {
-    b.process(items);
-  }
-}
-
-class B {
-  void process(List<int> items) {}
-}
-''');
-  }
-
-  test_undefinedMethod_create_generic_OK_local() async {
-    await resolveTestUnit('''
-class A<T> {
-  List<T> items;
-  main() {
-    process(items);
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A<T> {
-  List<T> items;
-  main() {
-    process(items);
-  }
-
-  void process(List<T> items) {}
-}
-''');
-  }
-
-  test_undefinedMethod_createQualified_emptyClassBody() async {
-    await resolveTestUnit('''
-class A {}
-main() {
-  A.myUndefinedMethod();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A {
-  static void myUndefinedMethod() {}
-}
-main() {
-  A.myUndefinedMethod();
-}
-''');
-  }
-
-  test_undefinedMethod_createQualified_fromClass() async {
-    await resolveTestUnit('''
-class A {
-}
-main() {
-  A.myUndefinedMethod();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A {
-  static void myUndefinedMethod() {}
-}
-main() {
-  A.myUndefinedMethod();
-}
-''');
-  }
-
-  test_undefinedMethod_createQualified_fromClass_hasOtherMember() async {
-    await resolveTestUnit('''
-class A {
-  foo() {}
-}
-main() {
-  A.myUndefinedMethod();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A {
-  foo() {}
-
-  static void myUndefinedMethod() {}
-}
-main() {
-  A.myUndefinedMethod();
-}
-''');
-  }
-
-  test_undefinedMethod_createQualified_fromInstance() async {
-    await resolveTestUnit('''
-class A {
-}
-main(A a) {
-  a.myUndefinedMethod();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A {
-  void myUndefinedMethod() {}
-}
-main(A a) {
-  a.myUndefinedMethod();
-}
-''');
-  }
-
-  test_undefinedMethod_createQualified_targetIsFunctionType() async {
-    await resolveTestUnit('''
-typedef A();
-main() {
-  A.myUndefinedMethod();
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_METHOD);
-  }
-
-  test_undefinedMethod_createQualified_targetIsUnresolved() async {
-    await resolveTestUnit('''
-main() {
-  NoSuchClass.myUndefinedMethod();
-}
-''');
-    await assertNoFix(DartFixKind.CREATE_METHOD);
-  }
-
-  test_undefinedMethod_createUnqualified_duplicateArgumentNames() async {
-    await resolveTestUnit('''
-class C {
-  int x;
-}
-
-class D {
-  foo(C c1, C c2) {
-    bar(c1.x, c2.x);
-  }
-}''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class C {
-  int x;
-}
-
-class D {
-  foo(C c1, C c2) {
-    bar(c1.x, c2.x);
-  }
-
-  void bar(int x, int x2) {}
-}''');
-  }
-
-  test_undefinedMethod_createUnqualified_parameters() async {
-    await resolveTestUnit('''
-class A {
-  main() {
-    myUndefinedMethod(0, 1.0, '3');
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A {
-  main() {
-    myUndefinedMethod(0, 1.0, '3');
-  }
-
-  void myUndefinedMethod(int i, double d, String s) {}
-}
-''');
-    // linked positions
-    int index = 0;
-    _assertLinkedGroup(
-        change.linkedEditGroups[index++], ['void myUndefinedMethod(']);
-    _assertLinkedGroup(change.linkedEditGroups[index++],
-        ['myUndefinedMethod(0', 'myUndefinedMethod(int']);
-    _assertLinkedGroup(
-        change.linkedEditGroups[index++],
-        ['int i'],
-        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
-            ['int', 'num', 'Object', 'Comparable<num>']));
-    _assertLinkedGroup(change.linkedEditGroups[index++], ['i,']);
-    _assertLinkedGroup(
-        change.linkedEditGroups[index++],
-        ['double d'],
-        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
-            ['double', 'num', 'Object', 'Comparable<num>']));
-    _assertLinkedGroup(change.linkedEditGroups[index++], ['d,']);
-    _assertLinkedGroup(
-        change.linkedEditGroups[index++],
-        ['String s'],
-        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
-            ['String', 'Object', 'Comparable<String>']));
-    _assertLinkedGroup(change.linkedEditGroups[index++], ['s)']);
-  }
-
-  test_undefinedMethod_createUnqualified_parameters_named() async {
-    await resolveTestUnit('''
-class A {
-  main() {
-    myUndefinedMethod(0, bbb: 1.0, ccc: '2');
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A {
-  main() {
-    myUndefinedMethod(0, bbb: 1.0, ccc: '2');
-  }
-
-  void myUndefinedMethod(int i, {double bbb, String ccc}) {}
-}
-''');
-    // linked positions
-    int index = 0;
-    _assertLinkedGroup(
-        change.linkedEditGroups[index++], ['void myUndefinedMethod(']);
-    _assertLinkedGroup(change.linkedEditGroups[index++],
-        ['myUndefinedMethod(0', 'myUndefinedMethod(int']);
-    _assertLinkedGroup(
-        change.linkedEditGroups[index++],
-        ['int i'],
-        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
-            ['int', 'num', 'Object', 'Comparable<num>']));
-    _assertLinkedGroup(change.linkedEditGroups[index++], ['i,']);
-    _assertLinkedGroup(
-        change.linkedEditGroups[index++],
-        ['double bbb'],
-        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
-            ['double', 'num', 'Object', 'Comparable<num>']));
-    _assertLinkedGroup(
-        change.linkedEditGroups[index++],
-        ['String ccc'],
-        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
-            ['String', 'Object', 'Comparable<String>']));
-  }
-
-  test_undefinedMethod_createUnqualified_returnType() async {
-    await resolveTestUnit('''
-class A {
-  main() {
-    int v = myUndefinedMethod();
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A {
-  main() {
-    int v = myUndefinedMethod();
-  }
-
-  int myUndefinedMethod() {}
-}
-''');
-    // linked positions
-    _assertLinkedGroup(change.linkedEditGroups[0], ['int myUndefinedMethod(']);
-    _assertLinkedGroup(change.linkedEditGroups[1],
-        ['myUndefinedMethod();', 'myUndefinedMethod() {']);
-  }
-
-  test_undefinedMethod_createUnqualified_staticFromField() async {
-    await resolveTestUnit('''
-class A {
-  static var f = myUndefinedMethod();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A {
-  static var f = myUndefinedMethod();
-
-  static myUndefinedMethod() {}
-}
-''');
-  }
-
-  test_undefinedMethod_createUnqualified_staticFromMethod() async {
-    await resolveTestUnit('''
-class A {
-  static main() {
-    myUndefinedMethod();
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A {
-  static main() {
-    myUndefinedMethod();
-  }
-
-  static void myUndefinedMethod() {}
-}
-''');
-  }
-
-  test_undefinedMethod_hint_createQualified_fromInstance() async {
-    await resolveTestUnit('''
-class A {
-}
-main() {
-  var a = new A();
-  a.myUndefinedMethod();
-}
-''');
-    await assertHasFix(DartFixKind.CREATE_METHOD, '''
-class A {
-  void myUndefinedMethod() {}
-}
-main() {
-  var a = new A();
-  a.myUndefinedMethod();
-}
-''');
-  }
-
-  test_undefinedMethod_parameterType_differentPrefixInTargetUnit() async {
-    String code2 = r'''
-library test2;
-import 'test3.dart' as bbb;
-export 'test3.dart';
-class D {
-}
-''';
-    addSource('/project/test2.dart', code2);
-    addSource('/project/test3.dart', r'''
-library test3;
-class E {}
-''');
-    await resolveTestUnit('''
-library test;
-import 'test2.dart' as aaa;
-main(aaa.D d, aaa.E e) {
-  d.foo(e);
-}
-''');
-    AnalysisError error = await _findErrorToFix();
-    fix = await _assertHasFix(DartFixKind.CREATE_METHOD, error);
-    change = fix.change;
-    // apply to "test2.dart"
-    List<SourceFileEdit> fileEdits = change.edits;
-    expect(fileEdits, hasLength(1));
-    SourceFileEdit fileEdit = change.edits[0];
-    expect(fileEdit.file, convertPath('/project/test2.dart'));
-    expect(SourceEdit.applySequence(code2, fileEdit.edits), r'''
-library test2;
-import 'test3.dart' as bbb;
-export 'test3.dart';
-class D {
-  void foo(bbb.E e) {}
-}
-''');
-  }
-
-  test_undefinedMethod_parameterType_inTargetUnit() async {
-    String code2 = r'''
-library test2;
-class D {
-}
-class E {}
-''';
-    addSource('/project/test2.dart', code2);
-    await resolveTestUnit('''
-library test;
-import 'test2.dart' as test2;
-main(test2.D d, test2.E e) {
-  d.foo(e);
-}
-''');
-    AnalysisError error = await _findErrorToFix();
-    fix = await _assertHasFix(DartFixKind.CREATE_METHOD, error);
-    change = fix.change;
-    // apply to "test2.dart"
-    List<SourceFileEdit> fileEdits = change.edits;
-    expect(fileEdits, hasLength(1));
-    SourceFileEdit fileEdit = change.edits[0];
-    expect(fileEdit.file, convertPath('/project/test2.dart'));
-    expect(SourceEdit.applySequence(code2, fileEdit.edits), r'''
-library test2;
-class D {
-  void foo(E e) {}
-}
-class E {}
-''');
-  }
-
-  test_undefinedMethod_useSimilar_ignoreOperators() async {
-    await resolveTestUnit('''
-main(Object object) {
-  object.then();
-}
-''');
-    await assertNoFix(DartFixKind.CHANGE_TO);
-  }
-
-  test_undefinedMethod_useSimilar_qualified() async {
-    await resolveTestUnit('''
-class A {
-  myMethod() {}
-}
-main() {
-  A a = new A();
-  a.myMehtod();
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-class A {
-  myMethod() {}
-}
-main() {
-  A a = new A();
-  a.myMethod();
-}
-''');
-  }
-
-  test_undefinedMethod_useSimilar_unqualified_superClass() async {
-    await resolveTestUnit('''
-class A {
-  myMethod() {}
-}
-class B extends A {
-  main() {
-    myMehtod();
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-class A {
-  myMethod() {}
-}
-class B extends A {
-  main() {
-    myMethod();
-  }
-}
-''');
-  }
-
-  test_undefinedMethod_useSimilar_unqualified_thisClass() async {
-    await resolveTestUnit('''
-class A {
-  myMethod() {}
-  main() {
-    myMehtod();
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-class A {
-  myMethod() {}
-  main() {
-    myMethod();
-  }
-}
-''');
-  }
-
-  test_undefinedParameter_convertFlutterChild_BAD_listNotWidget() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-build() {
-  return new Container(
-    child: new Row(
-      child: <Widget>[
-        new Container(),
-        null,
-      ],
-    ),
-  );
-}
-''');
-    await assertNoFix(DartFixKind.CONVERT_FLUTTER_CHILD);
-  }
-
-  test_undefinedParameter_convertFlutterChild_OK_hasList() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-build() {
-  return new Container(
-    child: new Row(
-      child: [
-        new Text('111'),
-        new Text('222'),
-      ],
-    ),
-  );
-}
-''');
-    await assertHasFix(DartFixKind.CONVERT_FLUTTER_CHILD, '''
-import 'package:flutter/widgets.dart';
-build() {
-  return new Container(
-    child: new Row(
-      children: <Widget>[
-        new Text('111'),
-        new Text('222'),
-      ],
-    ),
-  );
-}
-''');
-  }
-
-  test_undefinedParameter_convertFlutterChild_OK_hasTypedList() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-build() {
-  return new Container(
-    child: new Row(
-      child: <Widget>[
-        new Text('111'),
-        new Text('222'),
-      ],
-    ),
-  );
-}
-''');
-    await assertHasFix(DartFixKind.CONVERT_FLUTTER_CHILD, '''
-import 'package:flutter/widgets.dart';
-build() {
-  return new Container(
-    child: new Row(
-      children: <Widget>[
-        new Text('111'),
-        new Text('222'),
-      ],
-    ),
-  );
-}
-''');
-  }
-
-  test_undefinedParameter_convertFlutterChild_OK_multiLine() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-build() {
-  return new Scaffold(
-    body: new Row(
-      child: new Container(
-        width: 200.0,
-        height: 300.0,
-      ),
-    ),
-  );
-}
-''');
-    await assertHasFix(DartFixKind.CONVERT_FLUTTER_CHILD, '''
-import 'package:flutter/material.dart';
-build() {
-  return new Scaffold(
-    body: new Row(
-      children: <Widget>[
-        new Container(
-          width: 200.0,
-          height: 300.0,
-        ),
-      ],
-    ),
-  );
-}
-''');
-  }
-
-  test_undefinedParameter_convertFlutterChild_OK_widgetVariable() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/material.dart';
-build() {
-  var text = new Text('foo');
-  new Row(
-    child: text,
-  );
-}
-''');
-    await assertHasFix(DartFixKind.CONVERT_FLUTTER_CHILD, '''
-import 'package:flutter/material.dart';
-build() {
-  var text = new Text('foo');
-  new Row(
-    children: <Widget>[text],
-  );
-}
-''');
-  }
-
-  test_undefinedParameter_convertFlutterChildren_BAD_notWidget() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-build() {
-  return new Center(
-    children: [
-      new Object(),
-    ],
-  );
-}
-''');
-    await assertNoFix(DartFixKind.CONVERT_FLUTTER_CHILDREN);
-  }
-
-  test_undefinedParameter_convertFlutterChildren_OK_multiLine() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-build() {
-  return new Center(
-    children: [
-      new Container(
-        width: 200.0,
-        height: 300.0,
-      ),
-    ],
-  );
-}
-''');
-    await assertHasFix(DartFixKind.CONVERT_FLUTTER_CHILDREN, '''
-import 'package:flutter/widgets.dart';
-build() {
-  return new Center(
-    child: new Container(
-      width: 200.0,
-      height: 300.0,
-    ),
-  );
-}
-''');
-  }
-
-  test_undefinedParameter_convertFlutterChildren_OK_singleLine() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-build() {
-  return new Center(
-    children: [
-      new Text('foo'),
-    ],
-  );
-}
-''');
-    await assertHasFix(DartFixKind.CONVERT_FLUTTER_CHILDREN, '''
-import 'package:flutter/widgets.dart';
-build() {
-  return new Center(
-    child: new Text('foo'),
-  );
-}
-''');
-  }
-
-  test_undefinedParameter_convertFlutterChildren_OK_singleLine2() async {
-    addFlutterPackage();
-    await resolveTestUnit('''
-import 'package:flutter/widgets.dart';
-build() {
-  var text = new Text('foo');
-  new Center(
-    children: [text],
-  );
-}
-''');
-    await assertHasFix(DartFixKind.CONVERT_FLUTTER_CHILDREN, '''
-import 'package:flutter/widgets.dart';
-build() {
-  var text = new Text('foo');
-  new Center(
-    child: text,
-  );
-}
-''');
-  }
-
-  test_undefinedSetter_useSimilar_hint() async {
-    await resolveTestUnit('''
-class A {
-  int myField;
-}
-main(A a) {
-  var x = a;
-  x.myFild = 42;
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-class A {
-  int myField;
-}
-main(A a) {
-  var x = a;
-  x.myField = 42;
-}
-''');
-  }
-
-  test_undefinedSetter_useSimilar_qualified() async {
-    await resolveTestUnit('''
-class A {
-  int myField;
-}
-main(A a) {
-  a.myFild = 42;
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-class A {
-  int myField;
-}
-main(A a) {
-  a.myField = 42;
-}
-''');
-  }
-
-  test_undefinedSetter_useSimilar_unqualified() async {
-    await resolveTestUnit('''
-class A {
-  int myField;
-  main() {
-    myFild = 42;
-  }
-}
-''');
-    await assertHasFix(DartFixKind.CHANGE_TO, '''
-class A {
-  int myField;
-  main() {
-    myField = 42;
-  }
-}
-''');
-  }
-
-  test_useEffectiveIntegerDivision() async {
-    await resolveTestUnit('''
-main() {
-  var a = 5;
-  var b = 2;
-  print((a / b).toInt());
-}
-''');
-    await assertHasFix(DartFixKind.USE_EFFECTIVE_INTEGER_DIVISION, '''
-main() {
-  var a = 5;
-  var b = 2;
-  print(a ~/ b);
-}
-''');
-  }
-
-  test_useImportPrefix_withClass() async {
-    await resolveTestUnit('''
-import 'dart:async' as pref;
-main() {
-  pref.Stream s = null;
-  Future f = null;
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PREFIX, '''
-import 'dart:async' as pref;
-main() {
-  pref.Stream s = null;
-  pref.Future f = null;
-}
-''');
-  }
-
-  test_useImportPrefix_withTopLevelVariable() async {
-    await resolveTestUnit('''
-import 'dart:math' as pref;
-main() {
-  print(pref.E);
-  print(PI);
-}
-''');
-    await assertHasFix(DartFixKind.IMPORT_LIBRARY_PREFIX, '''
-import 'dart:math' as pref;
-main() {
-  print(pref.E);
-  print(pref.PI);
-}
-''');
-  }
-
-  void _addMetaPackageSource() {
-    addPackageSource('meta', 'meta.dart', r'''
-library meta;
-
-const Required required = const Required();
-
-class Required {
-  final String reason;
-  const Required([this.reason]);
-}
-''');
-  }
-}
-
-@reflectiveTest
-class LintFixTest extends BaseFixProcessorTest {
-  AnalysisError error;
-
-  Future applyFix(FixKind kind) async {
-    fix = await _assertHasFix(kind, error);
-    change = fix.change;
-    // apply to "file"
-    List<SourceFileEdit> fileEdits = change.edits;
-    expect(fileEdits, hasLength(1));
-    resultCode = SourceEdit.applySequence(testCode, change.edits[0].edits);
-  }
-
-  @override
-  assertNoFix(FixKind kind) async {
-    await _assertNoFix(kind, error);
-  }
-
-  Future<void> findLint(String src, String lintCode, {int length: 1}) async {
-    int errorOffset = src.indexOf('/*LINT*/');
-    await resolveTestUnit(src.replaceAll('/*LINT*/', ''));
-    error = new AnalysisError(
-        resolutionMap.elementDeclaredByCompilationUnit(testUnit).source,
-        errorOffset,
-        length,
-        new LintCode(lintCode, '<ignored>'));
-  }
-
-  test_addRequiredAnnotation() async {
-    String src = '''
-void function({String /*LINT*/param}) {
-  assert(param != null);
-}
-''';
-    await findLint(src, LintNames.always_require_non_null_named_parameters);
-    await applyFix(DartFixKind.LINT_ADD_REQUIRED);
-    verifyResult('''
-void function({@required String param}) {
-  assert(param != null);
-}
-''');
-  }
-
-  test_isNotEmpty() async {
-    String src = '''
-f(c) {
-  if (/*LINT*/!c.isEmpty) {}
-}
-''';
-    await findLint(src, LintNames.prefer_is_not_empty);
-
-    await applyFix(DartFixKind.USE_IS_NOT_EMPTY);
-
-    verifyResult('''
-f(c) {
-  if (c.isNotEmpty) {}
-}
-''');
-  }
-
-  test_lint_addMissingOverride_field() async {
-    String src = '''
-class abstract Test {
-  int get t;
-}
-class Sub extends Test {
-  int /*LINT*/t = 42;
-}
-''';
-    await findLint(src, LintNames.annotate_overrides);
-
-    await applyFix(DartFixKind.LINT_ADD_OVERRIDE);
-
-    verifyResult('''
-class abstract Test {
-  int get t;
-}
-class Sub extends Test {
-  @override
-  int t = 42;
-}
-''');
-  }
-
-  test_lint_addMissingOverride_getter() async {
-    String src = '''
-class Test {
-  int get t => null;
-}
-class Sub extends Test {
-  int get /*LINT*/t => null;
-}
-''';
-    await findLint(src, LintNames.annotate_overrides);
-
-    await applyFix(DartFixKind.LINT_ADD_OVERRIDE);
-
-    verifyResult('''
-class Test {
-  int get t => null;
-}
-class Sub extends Test {
-  @override
-  int get t => null;
-}
-''');
-  }
-
-  test_lint_addMissingOverride_method() async {
-    String src = '''
-class Test {
-  void t() { }
-}
-class Sub extends Test {
-  void /*LINT*/t() { }
-}
-''';
-    await findLint(src, LintNames.annotate_overrides);
-
-    await applyFix(DartFixKind.LINT_ADD_OVERRIDE);
-
-    verifyResult('''
-class Test {
-  void t() { }
-}
-class Sub extends Test {
-  @override
-  void t() { }
-}
-''');
-  }
-
-  test_lint_addMissingOverride_method_with_doc_comment() async {
-    String src = '''
-class Test {
-  void t() { }
-}
-class Sub extends Test {
-  /// Doc comment.
-  void /*LINT*/t() { }
-}
-''';
-    await findLint(src, LintNames.annotate_overrides);
-
-    await applyFix(DartFixKind.LINT_ADD_OVERRIDE);
-
-    verifyResult('''
-class Test {
-  void t() { }
-}
-class Sub extends Test {
-  /// Doc comment.
-  @override
-  void t() { }
-}
-''');
-  }
-
-  test_lint_addMissingOverride_method_with_doc_comment_2() async {
-    String src = '''
-class Test {
-  void t() { }
-}
-class Sub extends Test {
-  /**
-   * Doc comment.
-   */
-  void /*LINT*/t() { }
-}
-''';
-    await findLint(src, LintNames.annotate_overrides);
-
-    await applyFix(DartFixKind.LINT_ADD_OVERRIDE);
-
-    verifyResult('''
-class Test {
-  void t() { }
-}
-class Sub extends Test {
-  /**
-   * Doc comment.
-   */
-  @override
-  void t() { }
-}
-''');
-  }
-
-  test_lint_addMissingOverride_method_with_doc_comment_and_metadata() async {
-    String src = '''
-class Test {
-  void t() { }
-}
-class Sub extends Test {
-  /// Doc comment.
-  @foo
-  void /*LINT*/t() { }
-}
-''';
-    await findLint(src, LintNames.annotate_overrides);
-
-    await applyFix(DartFixKind.LINT_ADD_OVERRIDE);
-
-    verifyResult('''
-class Test {
-  void t() { }
-}
-class Sub extends Test {
-  /// Doc comment.
-  @override
-  @foo
-  void t() { }
-}
-''');
-  }
-
-  test_lint_addMissingOverride_method_with_non_doc_comment() async {
-    String src = '''
-class Test {
-  void t() { }
-}
-class Sub extends Test {
-  // Non-doc comment.
-  void /*LINT*/t() { }
-}
-''';
-    await findLint(src, LintNames.annotate_overrides);
-
-    await applyFix(DartFixKind.LINT_ADD_OVERRIDE);
-
-    verifyResult('''
-class Test {
-  void t() { }
-}
-class Sub extends Test {
-  // Non-doc comment.
-  @override
-  void t() { }
-}
-''');
-  }
-
-  test_lint_removeInterpolationBraces() async {
-    String src = r'''
-main() {
-  var v = 42;
-  print('v: /*LINT*/${ v}');
-}
-''';
-    await findLint(src, LintNames.unnecessary_brace_in_string_interp,
-        length: 4);
-    await applyFix(DartFixKind.LINT_REMOVE_INTERPOLATION_BRACES);
-    verifyResult(r'''
-main() {
-  var v = 42;
-  print('v: $v');
-}
-''');
-  }
-
-  test_makeFieldFinal_noKeyword() async {
-    String src = '''
-class C {
-  /*LINT*/f = 2;
-}
-''';
-    await findLint(src, LintNames.prefer_final_fields);
-
-    await applyFix(DartFixKind.MAKE_FINAL);
-
-    verifyResult('''
-class C {
-  final f = 2;
-}
-''');
-  }
-
-  test_makeFieldFinal_type() async {
-    String src = '''
-class C {
-  int /*LINT*/f = 2;
-}
-''';
-    await findLint(src, LintNames.prefer_final_fields);
-
-    await applyFix(DartFixKind.MAKE_FINAL);
-
-    verifyResult('''
-class C {
-  final int f = 2;
-}
-''');
-  }
-
-  test_makeFieldFinal_var() async {
-    String src = '''
-class C {
-  var /*LINT*/f = 2;
-}
-''';
-    await findLint(src, LintNames.prefer_final_fields);
-
-    await applyFix(DartFixKind.MAKE_FINAL);
-
-    verifyResult('''
-class C {
-  final f = 2;
-}
-''');
-  }
-
-  test_makeLocalFinal_type() async {
-    String src = '''
-bad() {
-  int /*LINT*/x = 2;
-}
-''';
-    await findLint(src, LintNames.prefer_final_locals);
-
-    await applyFix(DartFixKind.MAKE_FINAL);
-
-    verifyResult('''
-bad() {
-  final int x = 2;
-}
-''');
-  }
-
-  test_makeLocalFinal_var() async {
-    String src = '''
-bad() {
-  var /*LINT*/x = 2;
-}
-''';
-    await findLint(src, LintNames.prefer_final_locals);
-
-    await applyFix(DartFixKind.MAKE_FINAL);
-
-    verifyResult('''
-bad() {
-  final x = 2;
-}
-''');
-  }
-
-  test_removeAwait_intLiteral() async {
-    String src = '''
-bad() async {
-  print(/*LINT*/await 23);
-}
-''';
-    await findLint(src, LintNames.await_only_futures);
-
-    await applyFix(DartFixKind.REMOVE_AWAIT);
-
-    verifyResult('''
-bad() async {
-  print(23);
-}
-''');
-  }
-
-  test_removeAwait_StringLiteral() async {
-    String src = '''
-bad() async {
-  print(/*LINT*/await 'hola');
-}
-''';
-    await findLint(src, LintNames.await_only_futures);
-
-    await applyFix(DartFixKind.REMOVE_AWAIT);
-
-    verifyResult('''
-bad() async {
-  print('hola');
-}
-''');
-  }
-
-  test_removeEmptyCatch_newLine() async {
-    String src = '''
-void foo() {
-  try {}
-  catch (e) {/*LINT*/}
-  finally {}
-}
-''';
-    await findLint(src, LintNames.empty_catches);
-
-    await applyFix(DartFixKind.REMOVE_EMPTY_CATCH);
-
-    verifyResult('''
-void foo() {
-  try {}
-  finally {}
-}
-''');
-  }
-
-  test_removeEmptyCatch_sameLine() async {
-    String src = '''
-void foo() {
-  try {} catch (e) {/*LINT*/} finally {}
-}
-''';
-    await findLint(src, LintNames.empty_catches);
-
-    await applyFix(DartFixKind.REMOVE_EMPTY_CATCH);
-
-    verifyResult('''
-void foo() {
-  try {} finally {}
-}
-''');
-  }
-
-  test_removeEmptyConstructorBody() async {
-    String src = '''
-class C {
-  C() {/*LINT*/}
-}
-''';
-    await findLint(src, LintNames.empty_constructor_bodies);
-
-    await applyFix(DartFixKind.REMOVE_EMPTY_CONSTRUCTOR_BODY);
-
-    verifyResult('''
-class C {
-  C();
-}
-''');
-  }
-
-  test_removeEmptyElse_newLine() async {
-    String src = '''
-void foo(bool cond) {
-  if (cond) {
-    //
-  }
-  else /*LINT*/;
-}
-''';
-    await findLint(src, LintNames.avoid_empty_else);
-
-    await applyFix(DartFixKind.REMOVE_EMPTY_ELSE);
-
-    verifyResult('''
-void foo(bool cond) {
-  if (cond) {
-    //
-  }
-}
-''');
-  }
-
-  test_removeEmptyElse_sameLine() async {
-    String src = '''
-void foo(bool cond) {
-  if (cond) {
-    //
-  } else /*LINT*/;
-}
-''';
-    await findLint(src, LintNames.avoid_empty_else);
-
-    await applyFix(DartFixKind.REMOVE_EMPTY_ELSE);
-
-    verifyResult('''
-void foo(bool cond) {
-  if (cond) {
-    //
-  }
-}
-''');
-  }
-
-  test_removeEmptyStatement_insideBlock() async {
-    String src = '''
-void foo() {
-  while(true) {
-    /*LINT*/;
-  }
-}
-''';
-    await findLint(src, LintNames.empty_statements);
-
-    await applyFix(DartFixKind.REMOVE_EMPTY_STATEMENT);
-
-    verifyResult('''
-void foo() {
-  while(true) {
-  }
-}
-''');
-  }
-
-  test_removeEmptyStatement_outOfBlock_otherLine() async {
-    String src = '''
-void foo() {
-  while(true)
-  /*LINT*/;
-  print('hi');
-}
-''';
-    await findLint(src, LintNames.empty_statements);
-
-    await applyFix(DartFixKind.REPLACE_WITH_BRACKETS);
-
-    verifyResult('''
-void foo() {
-  while(true) {}
-  print('hi');
-}
-''');
-  }
-
-  test_removeEmptyStatement_outOfBlock_sameLine() async {
-    String src = '''
-void foo() {
-  while(true)/*LINT*/;
-  print('hi');
-}
-''';
-    await findLint(src, LintNames.empty_statements);
-
-    await applyFix(DartFixKind.REPLACE_WITH_BRACKETS);
-
-    verifyResult('''
-void foo() {
-  while(true) {}
-  print('hi');
-}
-''');
-  }
-
-  test_removeInitializer_field() async {
-    String src = '''
-class Test {
-  int /*LINT*/x = null;
-}
-''';
-    await findLint(src, LintNames.avoid_init_to_null);
-
-    await applyFix(DartFixKind.REMOVE_INITIALIZER);
-
-    verifyResult('''
-class Test {
-  int x;
-}
-''');
-  }
-
-  test_removeInitializer_listOfVariableDeclarations() async {
-    String src = '''
-String a = 'a', /*LINT*/b = null, c = 'c';
-''';
-    await findLint(src, LintNames.avoid_init_to_null);
-
-    await applyFix(DartFixKind.REMOVE_INITIALIZER);
-
-    verifyResult('''
-String a = 'a', b, c = 'c';
-''');
-  }
-
-  test_removeInitializer_topLevel() async {
-    String src = '''
-var /*LINT*/x = null;
-''';
-    await findLint(src, LintNames.avoid_init_to_null);
-
-    await applyFix(DartFixKind.REMOVE_INITIALIZER);
-
-    verifyResult('''
-var x;
-''');
-  }
-
-  test_removeMethodDeclaration_getter() async {
-    String src = '''
-class A {
-  int x;
-}
-class B extends A {
-  @override
-  int get /*LINT*/x => super.x;
-}
-''';
-    await findLint(src, LintNames.unnecessary_override);
-
-    await applyFix(DartFixKind.REMOVE_METHOD_DECLARATION);
-
-    verifyResult('''
-class A {
-  int x;
-}
-class B extends A {
-}
-''');
-  }
-
-  test_removeMethodDeclaration_method() async {
-    String src = '''
-class A {
-  @override
-  String /*LINT*/toString() => super.toString();
-}
-''';
-    await findLint(src, LintNames.unnecessary_override);
-
-    await applyFix(DartFixKind.REMOVE_METHOD_DECLARATION);
-
-    verifyResult('''
-class A {
-}
-''');
-  }
-
-  test_removeMethodDeclaration_setter() async {
-    String src = '''
-class A {
-  int x;
-}
-class B extends A {
-  @override
-  set /*LINT*/x(int other) {
-    this.x = other;
-  }
-}
-''';
-    await findLint(src, LintNames.unnecessary_override);
-
-    await applyFix(DartFixKind.REMOVE_METHOD_DECLARATION);
-
-    verifyResult('''
-class A {
-  int x;
-}
-class B extends A {
-}
-''');
-  }
-
-  test_removeThisExpression_methodInvocation_oneCharacterOperator() async {
-    String src = '''
-class A {
-  void foo() {
-    /*LINT*/this.foo();
-  }
-}
-''';
-    await findLint(src, LintNames.unnecessary_this);
-
-    await applyFix(DartFixKind.REMOVE_THIS_EXPRESSION);
-
-    verifyResult('''
-class A {
-  void foo() {
-    foo();
-  }
-}
-''');
-  }
-
-  test_removeThisExpression_methodInvocation_twoCharactersOperator() async {
-    String src = '''
-class A {
-  void foo() {
-    /*LINT*/this?.foo();
-  }
-}
-''';
-    await findLint(src, LintNames.unnecessary_this);
-
-    await applyFix(DartFixKind.REMOVE_THIS_EXPRESSION);
-
-    verifyResult('''
-class A {
-  void foo() {
-    foo();
-  }
-}
-''');
-  }
-
-  test_removeThisExpression_notAThisExpression() async {
-    String src = '''
-void foo() {
-  final /*LINT*/this.id;
-}
-''';
-    await findLint(src, LintNames.unnecessary_this);
-
-    await assertNoFix(DartFixKind.REMOVE_THIS_EXPRESSION);
-  }
-
-  test_removeThisExpression_propertyAccess_oneCharacterOperator() async {
-    String src = '''
-class A {
-  int x;
-  void foo() {
-    /*LINT*/this.x = 2;
-  }
-}
-''';
-    await findLint(src, LintNames.unnecessary_this);
-
-    await applyFix(DartFixKind.REMOVE_THIS_EXPRESSION);
-
-    verifyResult('''
-class A {
-  int x;
-  void foo() {
-    x = 2;
-  }
-}
-''');
-  }
-
-  test_removeThisExpression_propertyAccess_twoCharactersOperator() async {
-    String src = '''
-class A {
-  int x;
-  void foo() {
-    /*LINT*/this?.x = 2;
-  }
-}
-''';
-    await findLint(src, LintNames.unnecessary_this);
-
-    await applyFix(DartFixKind.REMOVE_THIS_EXPRESSION);
-
-    verifyResult('''
-class A {
-  int x;
-  void foo() {
-    x = 2;
-  }
-}
-''');
-  }
-
-  test_removeTypeAnnotation_avoidAnnotatingWithDynamic_InsideFunctionTypedFormalParameter() async {
-    String src = '''
-bad(void foo(/*LINT*/dynamic x)) {
-  return null;
-}
-''';
-    await findLint(src, LintNames.avoid_annotating_with_dynamic);
-
-    await applyFix(DartFixKind.REMOVE_TYPE_NAME);
-
-    verifyResult('''
-bad(void foo(x)) {
-  return null;
-}
-''');
-  }
-
-  test_removeTypeAnnotation_avoidAnnotatingWithDynamic_NamedParameter() async {
-    String src = '''
-bad({/*LINT*/dynamic defaultValue}) {
-  return null;
-}
-''';
-    await findLint(src, LintNames.avoid_annotating_with_dynamic);
-
-    await applyFix(DartFixKind.REMOVE_TYPE_NAME);
-
-    verifyResult('''
-bad({defaultValue}) {
-  return null;
-}
-''');
-  }
-
-  test_removeTypeAnnotation_avoidAnnotatingWithDynamic_NormalParameter() async {
-    String src = '''
-bad(/*LINT*/dynamic defaultValue) {
-  return null;
-}
-''';
-    await findLint(src, LintNames.avoid_annotating_with_dynamic);
-
-    await applyFix(DartFixKind.REMOVE_TYPE_NAME);
-
-    verifyResult('''
-bad(defaultValue) {
-  return null;
-}
-''');
-  }
-
-  test_removeTypeAnnotation_avoidAnnotatingWithDynamic_OptionalParameter() async {
-    String src = '''
-bad([/*LINT*/dynamic defaultValue]) {
-  return null;
-}
-''';
-    await findLint(src, LintNames.avoid_annotating_with_dynamic);
-
-    await applyFix(DartFixKind.REMOVE_TYPE_NAME);
-
-    verifyResult('''
-bad([defaultValue]) {
-  return null;
-}
-''');
-  }
-
-  test_removeTypeAnnotation_avoidReturnTypesOnSetters_void() async {
-    String src = '''
-/*LINT*/void set speed2(int ms) {}
-''';
-    await findLint(src, LintNames.avoid_return_types_on_setters);
-
-    await applyFix(DartFixKind.REMOVE_TYPE_NAME);
-
-    verifyResult('''
-set speed2(int ms) {}
-''');
-  }
-
-  test_removeTypeAnnotation_avoidTypesOnClosureParameters_FunctionTypedFormalParameter() async {
-    String src = '''
-var functionWithFunction = (/*LINT*/int f(int x)) => f(0);
-''';
-    await findLint(src, LintNames.avoid_types_on_closure_parameters);
-
-    await applyFix(DartFixKind.REPLACE_WITH_IDENTIFIER);
-
-    verifyResult('''
-var functionWithFunction = (f) => f(0);
-''');
-  }
-
-  test_removeTypeAnnotation_avoidTypesOnClosureParameters_NamedParameter() async {
-    String src = '''
-var x = ({/*LINT*/Future<int> defaultValue}) {
-  return null;
-};
-''';
-    await findLint(src, LintNames.avoid_types_on_closure_parameters);
-
-    await applyFix(DartFixKind.REMOVE_TYPE_NAME);
-
-    verifyResult('''
-var x = ({defaultValue}) {
-  return null;
-};
-''');
-  }
-
-  test_removeTypeAnnotation_avoidTypesOnClosureParameters_NormalParameter() async {
-    String src = '''
-var x = (/*LINT*/Future<int> defaultValue) {
-  return null;
-};
-''';
-    await findLint(src, LintNames.avoid_types_on_closure_parameters);
-
-    await applyFix(DartFixKind.REMOVE_TYPE_NAME);
-
-    verifyResult('''
-var x = (defaultValue) {
-  return null;
-};
-''');
-  }
-
-  test_removeTypeAnnotation_avoidTypesOnClosureParameters_OptionalParameter() async {
-    String src = '''
-var x = ([/*LINT*/Future<int> defaultValue]) {
-  return null;
-};
-''';
-    await findLint(src, LintNames.avoid_types_on_closure_parameters);
-
-    await applyFix(DartFixKind.REMOVE_TYPE_NAME);
-
-    verifyResult('''
-var x = ([defaultValue]) {
-  return null;
-};
-''');
-  }
-
-  test_removeTypeAnnotation_typeInitFormals_void() async {
-    String src = '''
-class C {
-  int f;
-  C(/*LINT*/int this.f);
-}
-''';
-    await findLint(src, LintNames.type_init_formals);
-
-    await applyFix(DartFixKind.REMOVE_TYPE_NAME);
-
-    verifyResult('''
-class C {
-  int f;
-  C(this.f);
-}
-''');
-  }
-
-  test_renameToCamelCase_BAD_parameter_optionalNamed() async {
-    String src = '''
-foo({int /*LINT*/my_integer_variable}) {
-  print(my_integer_variable);
-}
-''';
-    await findLint(src, LintNames.non_constant_identifier_names);
-    await assertNoFix(DartFixKind.RENAME_TO_CAMEL_CASE);
-  }
-
-  test_renameToCamelCase_OK_localVariable() async {
-    String src = '''
-main() {
-  int /*LINT*/my_integer_variable = 42;
-  int foo;
-  print(my_integer_variable);
-  print(foo);
-}
-''';
-    await findLint(src, LintNames.non_constant_identifier_names);
-
-    await applyFix(DartFixKind.RENAME_TO_CAMEL_CASE);
-
-    verifyResult('''
-main() {
-  int myIntegerVariable = 42;
-  int foo;
-  print(myIntegerVariable);
-  print(foo);
-}
-''');
-  }
-
-  test_renameToCamelCase_OK_parameter_closure() async {
-    String src = '''
-main() {
-  [0, 1, 2].forEach((/*LINT*/my_integer_variable) {
-    print(my_integer_variable);
-  });
-}
-''';
-    await findLint(src, LintNames.non_constant_identifier_names);
-
-    await applyFix(DartFixKind.RENAME_TO_CAMEL_CASE);
-
-    verifyResult('''
-main() {
-  [0, 1, 2].forEach((myIntegerVariable) {
-    print(myIntegerVariable);
-  });
-}
-''');
-  }
-
-  test_renameToCamelCase_OK_parameter_function() async {
-    String src = '''
-main(int /*LINT*/my_integer_variable) {
-  print(my_integer_variable);
-}
-''';
-    await findLint(src, LintNames.non_constant_identifier_names);
-
-    await applyFix(DartFixKind.RENAME_TO_CAMEL_CASE);
-
-    verifyResult('''
-main(int myIntegerVariable) {
-  print(myIntegerVariable);
-}
-''');
-  }
-
-  test_renameToCamelCase_OK_parameter_method() async {
-    String src = '''
-class A {
-  main(int /*LINT*/my_integer_variable) {
-    print(my_integer_variable);
-  }
-}
-''';
-    await findLint(src, LintNames.non_constant_identifier_names);
-
-    await applyFix(DartFixKind.RENAME_TO_CAMEL_CASE);
-
-    verifyResult('''
-class A {
-  main(int myIntegerVariable) {
-    print(myIntegerVariable);
-  }
-}
-''');
-  }
-
-  test_renameToCamelCase_OK_parameter_optionalPositional() async {
-    String src = '''
-main([int /*LINT*/my_integer_variable]) {
-  print(my_integer_variable);
-}
-''';
-    await findLint(src, LintNames.non_constant_identifier_names);
-
-    await applyFix(DartFixKind.RENAME_TO_CAMEL_CASE);
-
-    verifyResult('''
-main([int myIntegerVariable]) {
-  print(myIntegerVariable);
-}
-''');
-  }
-
-  test_replaceFinalWithConst_method() async {
-    String src = '''
-/*LINT*/final int a = 1;
-''';
-    await findLint(src, LintNames.prefer_const_declarations);
-
-    await applyFix(DartFixKind.REPLACE_FINAL_WITH_CONST);
-
-    verifyResult('''
-const int a = 1;
-''');
-  }
-
-  test_replaceWithConditionalAssignment_withCodeBeforeAndAfter() async {
-    String src = '''
-class Person {
-  String _fullName;
-  void foo() {
-    print('hi');
-    /*LINT*/if (_fullName == null) {
-      _fullName = getFullUserName(this);
-    }
-    print('hi');
-  }
-}
-''';
-    await findLint(src, LintNames.prefer_conditional_assignment);
-
-    await applyFix(DartFixKind.REPLACE_WITH_CONDITIONAL_ASSIGNMENT);
-
-    verifyResult('''
-class Person {
-  String _fullName;
-  void foo() {
-    print('hi');
-    _fullName ??= getFullUserName(this);
-    print('hi');
-  }
-}
-''');
-  }
-
-  test_replaceWithConditionalAssignment_withOneBlock() async {
-    String src = '''
-class Person {
-  String _fullName;
-  void foo() {
-    /*LINT*/if (_fullName == null) {
-      _fullName = getFullUserName(this);
-    }
-  }
-}
-''';
-    await findLint(src, LintNames.prefer_conditional_assignment);
-
-    await applyFix(DartFixKind.REPLACE_WITH_CONDITIONAL_ASSIGNMENT);
-
-    verifyResult('''
-class Person {
-  String _fullName;
-  void foo() {
-    _fullName ??= getFullUserName(this);
-  }
-}
-''');
-  }
-
-  test_replaceWithConditionalAssignment_withoutBlock() async {
-    String src = '''
-class Person {
-  String _fullName;
-  void foo() {
-    /*LINT*/if (_fullName == null)
-      _fullName = getFullUserName(this);
-  }
-}
-''';
-    await findLint(src, LintNames.prefer_conditional_assignment);
-
-    await applyFix(DartFixKind.REPLACE_WITH_CONDITIONAL_ASSIGNMENT);
-
-    verifyResult('''
-class Person {
-  String _fullName;
-  void foo() {
-    _fullName ??= getFullUserName(this);
-  }
-}
-''');
-  }
-
-  test_replaceWithConditionalAssignment_withTwoBlock() async {
-    String src = '''
-class Person {
-  String _fullName;
-  void foo() {
-    /*LINT*/if (_fullName == null) {{
-      _fullName = getFullUserName(this);
-    }}
-  }
-}
-''';
-    await findLint(src, LintNames.prefer_conditional_assignment);
-
-    await applyFix(DartFixKind.REPLACE_WITH_CONDITIONAL_ASSIGNMENT);
-
-    verifyResult('''
-class Person {
-  String _fullName;
-  void foo() {
-    _fullName ??= getFullUserName(this);
-  }
-}
-''');
-  }
-
-  test_replaceWithLiteral_linkedHashMap_withCommentsInGeneric() async {
-    String src = '''
-import 'dart:collection';
-
-final a = /*LINT*/new LinkedHashMap<int,/*comment*/int>();
-''';
-    await findLint(src, LintNames.prefer_collection_literals);
-
-    await applyFix(DartFixKind.REPLACE_WITH_LITERAL);
-
-    verifyResult('''
-import 'dart:collection';
-
-final a = <int,/*comment*/int>{};
-''');
-  }
-
-  test_replaceWithLiteral_linkedHashMap_withDynamicGenerics() async {
-    String src = '''
-import 'dart:collection';
-
-final a = /*LINT*/new LinkedHashMap<dynamic,dynamic>();
-''';
-    await findLint(src, LintNames.prefer_collection_literals);
-
-    await applyFix(DartFixKind.REPLACE_WITH_LITERAL);
-
-    verifyResult('''
-import 'dart:collection';
-
-final a = <dynamic,dynamic>{};
-''');
-  }
-
-  test_replaceWithLiteral_linkedHashMap_withGeneric() async {
-    String src = '''
-import 'dart:collection';
-
-final a = /*LINT*/new LinkedHashMap<int,int>();
-''';
-    await findLint(src, LintNames.prefer_collection_literals);
-
-    await applyFix(DartFixKind.REPLACE_WITH_LITERAL);
-
-    verifyResult('''
-import 'dart:collection';
-
-final a = <int,int>{};
-''');
-  }
-
-  test_replaceWithLiteral_linkedHashMap_withoutGeneric() async {
-    String src = '''
-import 'dart:collection';
-
-final a = /*LINT*/new LinkedHashMap();
-''';
-    await findLint(src, LintNames.prefer_collection_literals);
-
-    await applyFix(DartFixKind.REPLACE_WITH_LITERAL);
-
-    verifyResult('''
-import 'dart:collection';
-
-final a = {};
-''');
-  }
-
-  test_replaceWithLiteral_list_withGeneric() async {
-    String src = '''
-final a = /*LINT*/new List<int>();
-''';
-    await findLint(src, LintNames.prefer_collection_literals);
-
-    await applyFix(DartFixKind.REPLACE_WITH_LITERAL);
-
-    verifyResult('''
-final a = <int>[];
-''');
-  }
-
-  test_replaceWithLiteral_list_withoutGeneric() async {
-    String src = '''
-final a = /*LINT*/new List();
-''';
-    await findLint(src, LintNames.prefer_collection_literals);
-
-    await applyFix(DartFixKind.REPLACE_WITH_LITERAL);
-
-    verifyResult('''
-final a = [];
-''');
-  }
-
-  test_replaceWithLiteral_map_withGeneric() async {
-    String src = '''
-final a = /*LINT*/new Map<int,int>();
-''';
-    await findLint(src, LintNames.prefer_collection_literals);
-
-    await applyFix(DartFixKind.REPLACE_WITH_LITERAL);
-
-    verifyResult('''
-final a = <int,int>{};
-''');
-  }
-
-  test_replaceWithLiteral_map_withoutGeneric() async {
-    String src = '''
-final a = /*LINT*/new Map();
-''';
-    await findLint(src, LintNames.prefer_collection_literals);
-
-    await applyFix(DartFixKind.REPLACE_WITH_LITERAL);
-
-    verifyResult('''
-final a = {};
-''');
-  }
-
-  test_replaceWithTearOff_function_oneParameter() async {
-    String src = '''
-final x = /*LINT*/(name) {
-  print(name);
-};
-''';
-    await findLint(src, LintNames.unnecessary_lambdas);
-
-    await applyFix(DartFixKind.REPLACE_WITH_TEAR_OFF);
-
-    verifyResult('''
-final x = print;
-''');
-  }
-
-  test_replaceWithTearOff_function_zeroParameters() async {
-    String src = '''
-void foo(){}
-Function finalVar() {
-  return /*LINT*/() {
-    foo();
-  };
-}
-''';
-    await findLint(src, LintNames.unnecessary_lambdas);
-
-    await applyFix(DartFixKind.REPLACE_WITH_TEAR_OFF);
-
-    verifyResult('''
-void foo(){}
-Function finalVar() {
-  return foo;
-}
-''');
-  }
-
-  test_replaceWithTearOff_lambda_asArgument() async {
-    String src = '''
-void foo() {
-  bool isPair(int a) => a % 2 == 0;
-  final finalList = <int>[];
-  finalList.where(/*LINT*/(number) =>
-    isPair(number));
-}
-''';
-    await findLint(src, LintNames.unnecessary_lambdas);
-
-    await applyFix(DartFixKind.REPLACE_WITH_TEAR_OFF);
-
-    verifyResult('''
-void foo() {
-  bool isPair(int a) => a % 2 == 0;
-  final finalList = <int>[];
-  finalList.where(isPair);
-}
-''');
-  }
-
-  test_replaceWithTearOff_method_oneParameter() async {
-    String src = '''
-var a = /*LINT*/(x) => finalList.remove(x);
-''';
-    await findLint(src, LintNames.unnecessary_lambdas);
-
-    await applyFix(DartFixKind.REPLACE_WITH_TEAR_OFF);
-
-    verifyResult('''
-var a = finalList.remove;
-''');
-  }
-
-  test_replaceWithTearOff_method_zeroParameter() async {
-    String src = '''
-final Object a;
-Function finalVar() {
-  return /*LINT*/() {
-    return a.toString();
-  };
-}
-''';
-    await findLint(src, LintNames.unnecessary_lambdas);
-
-    await applyFix(DartFixKind.REPLACE_WITH_TEAR_OFF);
-
-    verifyResult('''
-final Object a;
-Function finalVar() {
-  return a.toString;
-}
-''');
-  }
-
-  void verifyResult(String expectedResult) {
-    expect(resultCode, expectedResult);
-  }
-}
-
-class _DartFixContextImpl implements DartFixContext {
-  @override
-  final ResourceProvider resourceProvider;
-
-  @override
-  final AnalysisDriver analysisDriver;
-
-  @override
-  final AstProvider astProvider;
-
-  @override
-  final CompilationUnit unit;
-
-  @override
-  final AnalysisError error;
-
-  @override
-  final List<AnalysisError> errors;
-
-  _DartFixContextImpl(this.resourceProvider, this.analysisDriver,
-      this.astProvider, this.unit, this.error, this.errors);
-
-  @override
-  GetTopLevelDeclarations get getTopLevelDeclarations =>
-      analysisDriver.getTopLevelNameDeclarations;
-}
diff --git a/pkg/analysis_server/test/services/correction/organize_directives_test.dart b/pkg/analysis_server/test/services/correction/organize_directives_test.dart
index d2b6796..ff56f55 100644
--- a/pkg/analysis_server/test/services/correction/organize_directives_test.dart
+++ b/pkg/analysis_server/test/services/correction/organize_directives_test.dart
@@ -5,8 +5,8 @@
 import 'dart:async';
 
 import 'package:analysis_server/src/services/correction/organize_directives.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/error/error.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart'
     hide AnalysisError;
 import 'package:test/test.dart';
@@ -96,8 +96,8 @@
   }
 
   test_remove_unresolvedDirectives() async {
-    addSource('/project/existing_part1.dart', 'part of lib;');
-    addSource('/project/existing_part2.dart', 'part of lib;');
+    addSource('/home/test/lib/existing_part1.dart', 'part of lib;');
+    addSource('/home/test/lib/existing_part2.dart', 'part of lib;');
     await _computeUnitAndErrors(r'''
 library lib;
 
@@ -335,7 +335,8 @@
 
   Future<void> _computeUnitAndErrors(String code) async {
     addTestSource(code);
-    AnalysisResult result = await driver.getResult(testSource.fullName);
+    ResolvedUnitResult result =
+        await session.getResolvedUnit(testSource.fullName);
     testUnit = result.unit;
     testErrors = result.errors;
   }
diff --git a/pkg/analysis_server/test/services/correction/sort_members_test.dart b/pkg/analysis_server/test/services/correction/sort_members_test.dart
index d89bb36..81001fa 100644
--- a/pkg/analysis_server/test/services/correction/sort_members_test.dart
+++ b/pkg/analysis_server/test/services/correction/sort_members_test.dart
@@ -5,7 +5,7 @@
 import 'dart:async';
 
 import 'package:analysis_server/src/services/correction/sort_members.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
@@ -512,6 +512,24 @@
 ''');
   }
 
+  test_mixinMembers_method() async {
+    await _parseTestUnit(r'''
+mixin A {
+  c() {}
+  a() {}
+  b() {}
+}
+''');
+    // validate change
+    _assertSort(r'''
+mixin A {
+  a() {}
+  b() {}
+  c() {}
+}
+''');
+  }
+
   test_unitMembers_class() async {
     await _parseTestUnit(r'''
 class C {}
@@ -664,6 +682,20 @@
 ''');
   }
 
+  test_unitMembers_genericTypeAlias() async {
+    await _parseTestUnit(r'''
+typedef FC = void Function();
+typedef FA = void Function();
+typedef FB = void Function();
+''');
+    // validate change
+    _assertSort(r'''
+typedef FA = void Function();
+typedef FB = void Function();
+typedef FC = void Function();
+''');
+  }
+
   test_unitMembers_importsAndDeclarations() async {
     await _parseTestUnit(r'''
 import 'dart:a';
@@ -711,6 +743,8 @@
     await _parseTestUnit(r'''
 _mmm() {}
 typedef nnn();
+typedef GTAF3 = void Function();
+typedef _GTAF2 = void Function();
 _nnn() {}
 typedef mmm();
 typedef _nnn();
@@ -724,6 +758,7 @@
 var nnn;
 var _mmm;
 var _nnn;
+typedef GTAF1 = void Function();
 set nnn(x) {}
 get mmm => null;
 set mmm(x) {}
@@ -752,6 +787,9 @@
 nnn() {}
 _mmm() {}
 _nnn() {}
+typedef GTAF1 = void Function();
+typedef GTAF3 = void Function();
+typedef _GTAF2 = void Function();
 typedef mmm();
 typedef nnn();
 typedef _mmm();
@@ -763,6 +801,19 @@
 ''');
   }
 
+  test_unitMembers_mixin() async {
+    await _parseTestUnit(r'''
+mixin C {}
+mixin A {}
+mixin B {}
+''');
+    _assertSort(r'''
+mixin A {}
+mixin B {}
+mixin C {}
+''');
+  }
+
   test_unitMembers_topLevelVariable() async {
     await _parseTestUnit(r'''
 int c;
@@ -804,7 +855,7 @@
 
   Future<void> _parseTestUnit(String code) async {
     addTestSource(code);
-    ParseResult result = await driver.parseFile(testSource.fullName);
+    ParsedUnitResult result = session.getParsedUnit(testSource.fullName);
     testUnit = result.unit;
   }
 }
diff --git a/pkg/analysis_server/test/services/correction/status_test.dart b/pkg/analysis_server/test/services/correction/status_test.dart
index cce27cd..eb27ec2 100644
--- a/pkg/analysis_server/test/services/correction/status_test.dart
+++ b/pkg/analysis_server/test/services/correction/status_test.dart
@@ -29,7 +29,7 @@
     Element element = findElement('MyClass');
     // check
     Location location = newLocation_fromElement(element);
-    expect(location.file, convertPath('/project/test.dart'));
+    expect(location.file, testFile);
     expect(location.offset, 6);
     expect(location.length, 7);
     expect(location.startLine, 1);
@@ -52,7 +52,7 @@
         sourceRange);
     // check
     Location location = newLocation_fromMatch(match);
-    expect(location.file, convertPath('/project/test.dart'));
+    expect(location.file, testFile);
     expect(location.offset, sourceRange.offset);
     expect(location.length, sourceRange.length);
   }
@@ -65,7 +65,7 @@
     AstNode node = findNodeAtString('main');
     // check
     Location location = newLocation_fromNode(node);
-    expect(location.file, convertPath('/project/test.dart'));
+    expect(location.file, testFile);
     expect(location.offset, node.offset);
     expect(location.length, node.length);
   }
@@ -75,7 +75,7 @@
     SourceRange sourceRange = new SourceRange(10, 20);
     // check
     Location location = newLocation_fromUnit(testUnit, sourceRange);
-    expect(location.file, convertPath('/project/test.dart'));
+    expect(location.file, testFile);
     expect(location.offset, sourceRange.offset);
     expect(location.length, sourceRange.length);
   }
diff --git a/pkg/analysis_server/test/services/correction/strings_test.dart b/pkg/analysis_server/test/services/correction/strings_test.dart
index abd4493..a7a68e7 100644
--- a/pkg/analysis_server/test/services/correction/strings_test.dart
+++ b/pkg/analysis_server/test/services/correction/strings_test.dart
@@ -133,13 +133,6 @@
     expect(isWhitespace('A'.codeUnitAt(0)), isFalse);
   }
 
-  void test_remove() {
-    expect(remove(null, 'x'), null);
-    expect(remove('abc', null), 'abc');
-    expect(remove('abc abbc abbbc', 'b'), 'ac ac ac');
-    expect(remove('abc abbc abbbc', 'bc'), 'a ab abb');
-  }
-
   void test_removeEnd() {
     expect(removeEnd(null, 'x'), null);
     expect(removeEnd('abc', null), 'abc');
@@ -165,11 +158,4 @@
     expect(shorten('0123456789abcdef', 11), '0123...cdef');
     expect(shorten('0123456789abcdef', 12), '01234...cdef');
   }
-
-  void test_substringAfterLast() {
-    expect(substringAfterLast('', '/'), '');
-    expect(substringAfterLast('abc', ''), '');
-    expect(substringAfterLast('abc', 'd'), 'abc');
-    expect(substringAfterLast('abcbde', 'b'), 'de');
-  }
 }
diff --git a/pkg/analysis_server/test/services/correction/test_all.dart b/pkg/analysis_server/test/services/correction/test_all.dart
index 4183ef1..e098648 100644
--- a/pkg/analysis_server/test/services/correction/test_all.dart
+++ b/pkg/analysis_server/test/services/correction/test_all.dart
@@ -1,12 +1,10 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import 'assist_test.dart' as assist_test;
 import 'change_test.dart' as change_test;
-import 'fix_test.dart' as fix_test;
 import 'levenshtein_test.dart' as levenshtein_test;
 import 'name_suggestion_test.dart' as name_suggestion_test;
 import 'organize_directives_test.dart' as organize_directives_test;
@@ -18,9 +16,7 @@
 /// Utility for manually running all tests.
 main() {
   defineReflectiveSuite(() {
-    assist_test.main();
     change_test.main();
-    fix_test.main();
     levenshtein_test.main();
     name_suggestion_test.main();
     organize_directives_test.main();
diff --git a/pkg/analysis_server/test/services/correction/util_test.dart b/pkg/analysis_server/test/services/correction/util_test.dart
index 3e1981c..53eaa7c 100644
--- a/pkg/analysis_server/test/services/correction/util_test.dart
+++ b/pkg/analysis_server/test/services/correction/util_test.dart
@@ -35,7 +35,8 @@
 ''');
     IfStatement ifStatement = findNodeAtString('if (');
     Expression condition = ifStatement.condition;
-    String result = new CorrectionUtils(testUnit).invertCondition(condition);
+    String result =
+        new CorrectionUtils(testAnalysisResult).invertCondition(condition);
     expect(result, expected);
   }
 
@@ -45,7 +46,7 @@
 import 'dart:math';
 ''');
     Source newLibrary = _getDartSource('dart:collection');
-    _assertAddLibraryImport(<Source>[newLibrary], '''
+    await _assertAddLibraryImport(<Source>[newLibrary], '''
 import 'dart:async';
 import 'dart:collection';
 import 'dart:math';
@@ -58,7 +59,7 @@
 import 'dart:math';
 ''');
     Source newLibrary = _getDartSource('dart:async');
-    _assertAddLibraryImport(<Source>[newLibrary], '''
+    await _assertAddLibraryImport(<Source>[newLibrary], '''
 import 'dart:async';
 import 'dart:collection';
 import 'dart:math';
@@ -71,7 +72,7 @@
 import 'dart:collection';
 ''');
     Source newLibrary = _getDartSource('dart:math');
-    _assertAddLibraryImport(<Source>[newLibrary], '''
+    await _assertAddLibraryImport(<Source>[newLibrary], '''
 import 'dart:async';
 import 'dart:collection';
 import 'dart:math';
@@ -85,7 +86,7 @@
 ''');
     Source newLibrary1 = _getDartSource('dart:async');
     Source newLibrary2 = _getDartSource('dart:html');
-    _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
+    await _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
 import 'dart:async';
 import 'dart:collection';
 import 'dart:html';
@@ -100,7 +101,7 @@
 ''');
     Source newLibrary1 = _getDartSource('dart:async');
     Source newLibrary2 = _getDartSource('dart:collection');
-    _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
+    await _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
 import 'dart:async';
 import 'dart:collection';
 import 'dart:html';
@@ -115,7 +116,7 @@
 ''');
     Source newLibrary1 = _getDartSource('dart:html');
     Source newLibrary2 = _getDartSource('dart:math');
-    _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
+    await _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
 import 'dart:async';
 import 'dart:collection';
 import 'dart:html';
@@ -131,7 +132,7 @@
 ''');
     Source newLibrary1 = _getDartSource('dart:math');
     Source newLibrary2 = _getDartSource('dart:async');
-    _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
+    await _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
 library test;
 
 import 'dart:async';
@@ -149,7 +150,7 @@
 ''');
     Source newLibrary1 = _getDartSource('dart:math');
     Source newLibrary2 = _getDartSource('dart:async');
-    _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
+    await _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
 /// Comment.
 
 import 'dart:async';
@@ -167,7 +168,7 @@
 ''');
     Source newLibrary1 = _getDartSource('dart:math');
     Source newLibrary2 = _getDartSource('dart:async');
-    _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
+    await _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
 #!/bin/dart
 
 import 'dart:async';
@@ -183,7 +184,7 @@
 ''');
     Source newLibrary1 = _getDartSource('dart:math');
     Source newLibrary2 = _getDartSource('dart:async');
-    _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
+    await _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
 import 'dart:async';
 import 'dart:math';
 
@@ -192,14 +193,14 @@
   }
 
   test_addLibraryImports_package_hasDart_hasPackages_insertAfter() async {
-    addPackageSource('aaa', 'aaa.dart', '');
+    addPackageFile('aaa', 'aaa.dart', '');
     await resolveTestUnit('''
 import 'dart:async';
 
 import 'package:aaa/aaa.dart';
 ''');
     Source newLibrary = _getSource('/lib/bbb.dart', 'package:bbb/bbb.dart');
-    _assertAddLibraryImport(<Source>[newLibrary], '''
+    await _assertAddLibraryImport(<Source>[newLibrary], '''
 import 'dart:async';
 
 import 'package:aaa/aaa.dart';
@@ -208,14 +209,14 @@
   }
 
   test_addLibraryImports_package_hasDart_hasPackages_insertBefore() async {
-    addPackageSource('bbb', 'bbb.dart', '');
+    addPackageFile('bbb', 'bbb.dart', '');
     await resolveTestUnit('''
 import 'dart:async';
 
 import 'package:bbb/bbb.dart';
 ''');
     Source newLibrary = _getSource('/lib/aaa.dart', 'package:aaa/aaa.dart');
-    _assertAddLibraryImport(<Source>[newLibrary], '''
+    await _assertAddLibraryImport(<Source>[newLibrary], '''
 import 'dart:async';
 
 import 'package:aaa/aaa.dart';
@@ -224,15 +225,15 @@
   }
 
   test_addLibraryImports_package_hasImports_between() async {
-    addPackageSource('aaa', 'aaa.dart', '');
-    addPackageSource('ddd', 'ddd.dart', '');
+    addPackageFile('aaa', 'aaa.dart', '');
+    addPackageFile('ddd', 'ddd.dart', '');
     await resolveTestUnit('''
 import 'package:aaa/aaa.dart';
 import 'package:ddd/ddd.dart';
 ''');
     Source newLibrary1 = _getSource('/lib/bbb.dart', 'package:bbb/bbb.dart');
     Source newLibrary2 = _getSource('/lib/ccc.dart', 'package:ccc/ccc.dart');
-    _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
+    await _assertAddLibraryImport(<Source>[newLibrary1, newLibrary2], '''
 import 'package:aaa/aaa.dart';
 import 'package:bbb/bbb.dart';
 import 'package:ccc/ccc.dart';
@@ -285,10 +286,11 @@
     await assert_invertCondition('(((b1)))', '!b1');
   }
 
-  void _assertAddLibraryImport(List<Source> newLibraries, String expectedCode) {
+  Future<void> _assertAddLibraryImport(
+      List<Source> newLibraries, String expectedCode) async {
     SourceChange change = new SourceChange('');
-    addLibraryImports(resourceProvider.pathContext, change, testLibraryElement,
-        newLibraries.toSet());
+    await addLibraryImports(testAnalysisResult.session, change,
+        testLibraryElement, newLibraries.toSet());
     SourceFileEdit testEdit = change.getFileEdit(testFile);
     expect(testEdit, isNotNull);
     String resultCode = SourceEdit.applySequence(testCode, testEdit.edits);
diff --git a/pkg/analysis_server/test/services/linter/linter_test.dart b/pkg/analysis_server/test/services/linter/linter_test.dart
index 19272d8..3965bba 100644
--- a/pkg/analysis_server/test/services/linter/linter_test.dart
+++ b/pkg/analysis_server/test/services/linter/linter_test.dart
@@ -1,8 +1,9 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/error/error.dart';
+import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/src/analysis_options/analysis_options_provider.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
diff --git a/pkg/analysis_server/test/services/refactoring/abstract_refactoring.dart b/pkg/analysis_server/test/services/refactoring/abstract_refactoring.dart
index 7acb0ce..213972f 100644
--- a/pkg/analysis_server/test/services/refactoring/abstract_refactoring.dart
+++ b/pkg/analysis_server/test/services/refactoring/abstract_refactoring.dart
@@ -8,11 +8,7 @@
 import 'package:analysis_server/src/services/refactoring/refactoring.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analysis_server/src/services/search/search_engine_internal.dart';
-import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/element/element.dart' show Element;
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/dart/analysis/ast_provider_driver.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart'
     show
@@ -44,7 +40,6 @@
  */
 abstract class RefactoringTest extends AbstractSingleUnitTest {
   SearchEngine searchEngine;
-  AstProvider astProvider;
 
   SourceChange refactoringChange;
 
@@ -151,14 +146,6 @@
     expect(actualCode, expectedCode);
   }
 
-  /**
-   * Completes with a fully resolved unit that contains the [element].
-   */
-  Future<CompilationUnit> getResolvedUnitWithElement(Element element) async {
-    return element.context
-        .resolveCompilationUnit(element.source, element.library);
-  }
-
   Future<void> indexTestUnit(String code) async {
     await resolveTestUnit(code);
   }
@@ -170,6 +157,5 @@
   void setUp() {
     super.setUp();
     searchEngine = new SearchEngineImpl([driver]);
-    astProvider = new AstProviderForDriver(driver);
   }
 }
diff --git a/pkg/analysis_server/test/services/refactoring/abstract_rename.dart b/pkg/analysis_server/test/services/refactoring/abstract_rename.dart
index 400bb3d..fec6d34 100644
--- a/pkg/analysis_server/test/services/refactoring/abstract_rename.dart
+++ b/pkg/analysis_server/test/services/refactoring/abstract_rename.dart
@@ -56,7 +56,8 @@
    */
   void createRenameRefactoringForElement(Element element) {
     var workspace = new RefactoringWorkspace([driver], searchEngine);
-    refactoring = new RenameRefactoring(workspace, astProvider, element);
+    var session = testAnalysisResult.session;
+    refactoring = new RenameRefactoring(workspace, session, element);
     expect(refactoring, isNotNull, reason: "No refactoring for '$element'.");
   }
 
diff --git a/pkg/analysis_server/test/services/refactoring/convert_getter_to_method_test.dart b/pkg/analysis_server/test/services/refactoring/convert_getter_to_method_test.dart
index 6702055..abac0c8 100644
--- a/pkg/analysis_server/test/services/refactoring/convert_getter_to_method_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/convert_getter_to_method_test.dart
@@ -87,7 +87,7 @@
   }
 
   test_change_multipleFiles() async {
-    await indexUnit('/project/other.dart', r'''
+    await indexUnit('/home/test/lib/other.dart', r'''
 class A {
   int get test => 1;
 }
@@ -153,7 +153,7 @@
 
   void _createRefactoringForElement(ExecutableElement element) {
     refactoring = new ConvertGetterToMethodRefactoring(
-        searchEngine, astProvider, element);
+        searchEngine, testAnalysisResult.session, element);
   }
 
   void _createRefactoringForString(String search) {
diff --git a/pkg/analysis_server/test/services/refactoring/convert_method_to_getter_test.dart b/pkg/analysis_server/test/services/refactoring/convert_method_to_getter_test.dart
index 60f38f8..129cf15 100644
--- a/pkg/analysis_server/test/services/refactoring/convert_method_to_getter_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/convert_method_to_getter_test.dart
@@ -89,7 +89,7 @@
   }
 
   test_change_multipleFiles() async {
-    await indexUnit('/project/other.dart', r'''
+    await indexUnit('/home/test/lib/other.dart', r'''
 class A {
   int test() => 1;
 }
@@ -205,7 +205,7 @@
 
   void _createRefactoringForElement(ExecutableElement element) {
     refactoring = new ConvertMethodToGetterRefactoring(
-        searchEngine, astProvider, element);
+        searchEngine, testAnalysisResult.session, element);
   }
 
   void _createRefactoringForString(String search) {
diff --git a/pkg/analysis_server/test/services/refactoring/extract_method_test.dart b/pkg/analysis_server/test/services/refactoring/extract_method_test.dart
index 35a31ee..420f69a 100644
--- a/pkg/analysis_server/test/services/refactoring/extract_method_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/extract_method_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -1516,10 +1516,10 @@
     await indexTestUnit('''
 import 'asyncLib.dart';
 main() {
-  var a = newFuture();
+  var a = newCompleter();
 }
 ''');
-    _createRefactoringForString('newFuture()');
+    _createRefactoringForString('newCompleter()');
     // apply refactoring
     return _assertSuccessfulRefactoring('''
 import 'asyncLib.dart';
@@ -1528,7 +1528,7 @@
   var a = res();
 }
 
-Future<int> res() => newFuture();
+Completer<int> res() => newCompleter();
 ''');
   }
 
@@ -2527,7 +2527,7 @@
     await indexTestUnit('''
 import 'asyncLib.dart';
 main() {
-  var v = newFuture();
+  var v = newCompleter();
 // start
   print(v);
 // end
@@ -2539,20 +2539,19 @@
 import 'asyncLib.dart';
 import 'dart:async';
 main() {
-  var v = newFuture();
+  var v = newCompleter();
 // start
   res(v);
 // end
 }
 
-void res(Future<int> v) {
+void res(Completer<int> v) {
   print(v);
 }
 ''');
   }
 
   test_statements_parameters_localFunction() async {
-    _addLibraryReturningAsync();
     await indexTestUnit('''
 class C {
   int f(int a) {
@@ -2837,10 +2836,10 @@
   }
 
   void _addLibraryReturningAsync() {
-    addSource('/project/asyncLib.dart', r'''
-library asyncLib;
+    addSource('/home/test/lib/asyncLib.dart', r'''
 import 'dart:async';
-Future<int> newFuture() => null;
+
+Completer<int> newCompleter() => null;
 ''');
   }
 
@@ -2880,7 +2879,7 @@
 
   void _createRefactoring(int offset, int length) {
     refactoring = new ExtractMethodRefactoring(
-        searchEngine, astProvider, testAnalysisResult, offset, length);
+        searchEngine, testAnalysisResult, offset, length);
     refactoring.name = 'res';
   }
 
diff --git a/pkg/analysis_server/test/services/refactoring/inline_local_test.dart b/pkg/analysis_server/test/services/refactoring/inline_local_test.dart
index 0c4ac76..41e32b8 100644
--- a/pkg/analysis_server/test/services/refactoring/inline_local_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/inline_local_test.dart
@@ -634,6 +634,9 @@
   void _createRefactoring(String search) {
     int offset = findOffset(search);
     refactoring = new InlineLocalRefactoring(
-        searchEngine, astProvider, testAnalysisResult, offset);
+      searchEngine,
+      testAnalysisResult,
+      offset,
+    );
   }
 }
diff --git a/pkg/analysis_server/test/services/refactoring/inline_method_test.dart b/pkg/analysis_server/test/services/refactoring/inline_method_test.dart
index a508984..077035c 100644
--- a/pkg/analysis_server/test/services/refactoring/inline_method_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/inline_method_test.dart
@@ -1756,6 +1756,9 @@
   void _createRefactoring(String search) {
     int offset = findOffset(search);
     refactoring = new InlineMethodRefactoring(
-        searchEngine, astProvider, testAnalysisResult, offset);
+      searchEngine,
+      testAnalysisResult,
+      offset,
+    );
   }
 }
diff --git a/pkg/analysis_server/test/services/refactoring/move_file_test.dart b/pkg/analysis_server/test/services/refactoring/move_file_test.dart
index 2616261..dd52924 100644
--- a/pkg/analysis_server/test/services/refactoring/move_file_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/move_file_test.dart
@@ -23,10 +23,10 @@
   MoveFileRefactoring refactoring;
 
   test_file_containing_imports_exports_parts() async {
-    String pathA = '/project/000/1111/a.dart';
-    String pathB = '/project/000/1111/b.dart';
-    String pathC = '/project/000/1111/22/c.dart';
-    testFile = '/project/000/1111/test.dart';
+    String pathA = '/home/test/000/1111/a.dart';
+    String pathB = '/home/test/000/1111/b.dart';
+    String pathC = '/home/test/000/1111/22/c.dart';
+    testFile = '/home/test/000/1111/test.dart';
     addSource('/absolute/uri.dart', '');
     addSource(pathA, 'part of lib;');
     addSource(pathB, "import 'test.dart';");
@@ -40,7 +40,7 @@
 part '${convertAbsolutePathToUri('/absolute/uri.dart')}';
 ''');
     // perform refactoring
-    _createRefactoring('/project/000/1111/22/new_name.dart');
+    _createRefactoring('/home/test/000/1111/22/new_name.dart');
     await _assertSuccessfulRefactoring();
     assertNoFileChange(pathA);
     assertFileChangeResult(pathB, "import '22/new_name.dart';");
@@ -55,15 +55,30 @@
 ''');
   }
 
+  test_file_imported_with_package_uri() async {
+    newFile('/home/test/lib/old_name.dart', content: '');
+    addTestSource(r'''
+import 'package:test/old_name.dart';
+''');
+
+    _createRefactoring('/home/test/lib/222/new_name.dart',
+        oldName: '/home/test/lib/old_name.dart');
+    await _assertSuccessfulRefactoring();
+
+    assertFileChangeResult(testFile, '''
+import 'package:test/222/new_name.dart';
+''');
+  }
+
   test_file_importedLibrary_down() async {
-    String pathA = '/project/000/1111/a.dart';
-    testFile = '/project/000/1111/test.dart';
+    String pathA = '/home/test/000/1111/a.dart';
+    testFile = '/home/test/000/1111/test.dart';
     addSource(pathA, '''
 import 'test.dart';
 ''');
     addTestSource('');
     // perform refactoring
-    _createRefactoring('/project/000/1111/22/new_name.dart');
+    _createRefactoring('/home/test/000/1111/22/new_name.dart');
     await _assertSuccessfulRefactoring();
     assertFileChangeResult(pathA, '''
 import '22/new_name.dart';
@@ -72,14 +87,14 @@
   }
 
   test_file_importedLibrary_sideways() async {
-    String pathA = '/project/000/1111/a.dart';
-    testFile = '/project/000/1111/sub/folder/test.dart';
+    String pathA = '/home/test/000/1111/a.dart';
+    testFile = '/home/test/000/1111/sub/folder/test.dart';
     addSource(pathA, '''
 import 'sub/folder/test.dart';
 ''');
     addTestSource('');
     // perform refactoring
-    _createRefactoring('/project/000/new/folder/name/new_name.dart');
+    _createRefactoring('/home/test/000/new/folder/name/new_name.dart');
     await _assertSuccessfulRefactoring();
     assertFileChangeResult(pathA, '''
 import '../new/folder/name/new_name.dart';
@@ -88,14 +103,14 @@
   }
 
   test_file_importedLibrary_up() async {
-    String pathA = '/project/000/1111/a.dart';
-    testFile = '/project/000/1111/22/test.dart';
+    String pathA = '/home/test/000/1111/a.dart';
+    testFile = '/home/test/000/1111/22/test.dart';
     addSource(pathA, '''
 import '22/test.dart';
 ''');
     addTestSource('');
     // perform refactoring
-    _createRefactoring('/project/000/1111/new_name.dart');
+    _createRefactoring('/home/test/000/1111/new_name.dart');
     await _assertSuccessfulRefactoring();
     assertFileChangeResult(pathA, '''
 import 'new_name.dart';
@@ -103,33 +118,13 @@
     assertNoFileChange(testFile);
   }
 
-  test_file_imported_with_package_uri() async {
-    // Set up package uri resolution for local package.
-    packageMap['my_package'] = [getFolder('/project/lib')];
-    configureDriver();
-
-    String pathA = '/project/000/1111/a.dart';
-    testFile = '/project/lib/test.dart';
-    addSource(pathA, '''
-  import 'package:my_package/test.dart';
-  ''');
-    addTestSource('');
-    // perform refactoring
-    _createRefactoring('/project/lib/222/new_name.dart');
-    await _assertSuccessfulRefactoring();
-    assertFileChangeResult(pathA, '''
-  import 'package:my_package/222/new_name.dart';
-  ''');
-    assertNoFileChange(testFile);
-  }
-
   @failingTest
   test_file_referenced_by_multiple_libraries() async {
     // This test fails because the search index doesn't support multiple uris for
     // a library, so only one of them is updated.
-    String pathA = '/project/000/1111/a.dart';
-    String pathB = '/project/000/b.dart';
-    testFile = '/project/000/1111/22/test.dart';
+    String pathA = '/home/test/000/1111/a.dart';
+    String pathB = '/home/test/000/b.dart';
+    testFile = '/home/test/000/1111/22/test.dart';
     addSource(pathA, '''
 library lib;
 part '22/test.dart';
@@ -142,7 +137,7 @@
 part of lib;
 ''');
     // perform refactoring
-    _createRefactoring('/project/000/1111/22/new_name.dart');
+    _createRefactoring('/home/test/000/1111/22/new_name.dart');
     await _assertSuccessfulRefactoring();
     assertFileChangeResult(pathA, '''
 library lib;
@@ -156,8 +151,8 @@
   }
 
   test_file_referenced_by_part() async {
-    String pathA = '/project/000/1111/a.dart';
-    testFile = '/project/000/1111/22/test.dart';
+    String pathA = '/home/test/000/1111/a.dart';
+    testFile = '/home/test/000/1111/22/test.dart';
     addSource(pathA, '''
 library lib;
 part '22/test.dart';
@@ -166,7 +161,7 @@
 part of lib;
 ''');
     // perform refactoring
-    _createRefactoring('/project/000/1111/22/new_name.dart');
+    _createRefactoring('/home/test/000/1111/22/new_name.dart');
     await _assertSuccessfulRefactoring();
     assertFileChangeResult(pathA, '''
 library lib;
@@ -190,11 +185,11 @@
   }
 
   test_nonexistent_file_returns_failure() async {
-    _createRefactoring(convertPath('/project/test_missing_new.dart'),
-        oldName: convertPath('/project/test_missing.dart'));
+    _createRefactoring(convertPath('/home/test/test_missing_new.dart'),
+        oldName: convertPath('/home/test/test_missing.dart'));
     await _assertFailedRefactoring(RefactoringProblemSeverity.FATAL,
         expectedMessage:
-            '${convertPath('/project/test_missing.dart')} does not exist.');
+            '${convertPath('/home/test/test_missing.dart')} does not exist.');
   }
 
   @failingTest
@@ -205,18 +200,18 @@
   }
 
   test_projectFolder() async {
-    _createRefactoring('/project2', oldName: '/project');
+    _createRefactoring('/home/test2', oldName: '/home/test');
     await _assertFailedRefactoring(RefactoringProblemSeverity.FATAL,
-        expectedMessage:
-            'Renaming an analysis root is not supported (${convertPath('/project')})');
+        expectedMessage: 'Renaming an analysis root is not supported '
+            '(${convertPath('/home/test')})');
   }
 
   test_renaming_part_that_uses_uri_in_part_of() async {
     // If the file is a part in a library, and the part-of directive uses a URI
     // rather than a library name, that will need updating too (if the relative
     // path to the parent changes).
-    String pathA = '/project/000/1111/a.dart';
-    testFile = '/project/000/1111/22/test.dart';
+    String pathA = '/home/test/000/1111/a.dart';
+    testFile = '/home/test/000/1111/22/test.dart';
     addSource(pathA, '''
 library lib;
 part '22/test.dart';
@@ -225,7 +220,7 @@
 part of '../a.dart';
 ''');
     // perform refactoring
-    _createRefactoring('/project/000/1111/22/33/test.dart');
+    _createRefactoring('/home/test/000/1111/22/33/test.dart');
     await _assertSuccessfulRefactoring();
     assertFileChangeResult(pathA, '''
 library lib;
@@ -236,6 +231,13 @@
 ''');
   }
 
+  Future _assertFailedRefactoring(RefactoringProblemSeverity expectedSeverity,
+      {String expectedMessage}) async {
+    RefactoringStatus status = await refactoring.checkAllConditions();
+    assertRefactoringStatus(status, expectedSeverity,
+        expectedMessage: expectedMessage);
+  }
+
   /**
    * Checks that all conditions are OK.
    */
@@ -257,11 +259,4 @@
     }
     refactoring.newFile = convertPath(newName);
   }
-
-  Future _assertFailedRefactoring(RefactoringProblemSeverity expectedSeverity,
-      {String expectedMessage}) async {
-    RefactoringStatus status = await refactoring.checkAllConditions();
-    assertRefactoringStatus(status, expectedSeverity,
-        expectedMessage: expectedMessage);
-  }
 }
diff --git a/pkg/analysis_server/test/services/refactoring/rename_class_member_test.dart b/pkg/analysis_server/test/services/refactoring/rename_class_member_test.dart
index a7e9148..90957df 100644
--- a/pkg/analysis_server/test/services/refactoring/rename_class_member_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/rename_class_member_test.dart
@@ -157,7 +157,7 @@
   test() {}
 }
 ''');
-    await indexUnit('/project/lib.dart', '''
+    await indexUnit('/home/test/lib/lib.dart', '''
 library my.lib;
 import 'test.dart';
 
@@ -356,7 +356,7 @@
   newName() {} // marker
 }
 ''';
-    await indexUnit('/project/lib.dart', libCode);
+    await indexUnit('/home/test/lib/lib.dart', libCode);
     await indexTestUnit('''
 import 'lib.dart';
 class B extends A {
@@ -715,17 +715,18 @@
   }
 
   test_createChange_MethodElement_potential_inPubCache() async {
-    String pkgLib = '/.pub-cache/lib.dart';
-    await indexUnit(pkgLib, r'''
+    var externalPath = addPackageFile('aaa', 'lib.dart', r'''
 processObj(p) {
   p.test();
 }
-''');
+''').path;
     await indexTestUnit('''
-import '${convertAbsolutePathToUri(pkgLib)}';
+import 'package:aaa/lib.dart';
+
 class A {
   test() {}
 }
+
 main(var a) {
   a.test();
 }
@@ -737,15 +738,17 @@
     refactoring.newName = 'newName';
     // validate change
     await assertSuccessfulRefactoring('''
-import '${convertAbsolutePathToUri('/.pub-cache/lib.dart')}';
+import 'package:aaa/lib.dart';
+
 class A {
   newName() {}
 }
+
 main(var a) {
   a.newName();
 }
 ''');
-    SourceFileEdit fileEdit = refactoringChange.getFileEdit(pkgLib);
+    SourceFileEdit fileEdit = refactoringChange.getFileEdit(externalPath);
     expect(fileEdit, isNull);
   }
 
@@ -783,6 +786,94 @@
     assertNoFileChange('/lib.dart');
   }
 
+  test_createChange_outsideOfProject_declarationInPackage() async {
+    addPackageFile('aaa', 'aaa.dart', r'''
+class A {
+  void test() {}
+}
+
+void foo(A a) {
+  a.test();
+}
+''');
+    await indexTestUnit('''
+import 'package:aaa/aaa.dart';
+
+class B extends A {
+  void test() {}
+}
+
+main(A a, B b) {
+  a.test();
+  b.test();
+}
+''');
+    createRenameRefactoringAtString('test() {}');
+    refactoring.newName = 'newName';
+
+    await assertSuccessfulRefactoring('''
+import 'package:aaa/aaa.dart';
+
+class B extends A {
+  void newName() {}
+}
+
+main(A a, B b) {
+  a.newName();
+  b.newName();
+}
+''');
+
+    expect(refactoringChange.edits, hasLength(1));
+    expect(refactoringChange.edits[0].file, testFile);
+  }
+
+  test_createChange_outsideOfProject_referenceInPart() async {
+    newFile('/home/part.dart', content: r'''
+part of test;
+
+void foo(A a) {
+  a.test();
+}
+''');
+
+    // To use file:// URI.
+    testFile = convertPath('/home/test/bin/test.dart');
+
+    await indexTestUnit('''
+library test;
+
+part '../../part.dart';
+
+class A {
+  void test() {}
+}
+
+main(A a) {
+  a.test();
+}
+''');
+    createRenameRefactoringAtString('test() {}');
+    refactoring.newName = 'newName';
+
+    await assertSuccessfulRefactoring('''
+library test;
+
+part '../../part.dart';
+
+class A {
+  void newName() {}
+}
+
+main(A a) {
+  a.newName();
+}
+''');
+
+    expect(refactoringChange.edits, hasLength(1));
+    expect(refactoringChange.edits[0].file, testFile);
+  }
+
   test_createChange_PropertyAccessorElement_getter() async {
     await indexTestUnit('''
 class A {
diff --git a/pkg/analysis_server/test/services/refactoring/rename_library_test.dart b/pkg/analysis_server/test/services/refactoring/rename_library_test.dart
index 19d2a4d..dc1df38 100644
--- a/pkg/analysis_server/test/services/refactoring/rename_library_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/rename_library_test.dart
@@ -40,7 +40,7 @@
   }
 
   test_createChange() async {
-    addSource('/project/part.dart', '''
+    addSource('/home/test/lib/part.dart', '''
 part of my.app;
 ''');
     await indexTestUnit('''
@@ -57,13 +57,13 @@
 library the.new.name;
 part 'part.dart';
 ''');
-    assertFileChangeResult('/project/part.dart', '''
+    assertFileChangeResult('/home/test/lib/part.dart', '''
 part of the.new.name;
 ''');
   }
 
   test_createChange_hasWhitespaces() async {
-    addSource('/project/part.dart', '''
+    addSource('/home/test/lib/part.dart', '''
 part of my .  app;
 ''');
     await indexTestUnit('''
@@ -80,7 +80,7 @@
 library the.new.name;
 part 'part.dart';
 ''');
-    assertFileChangeResult('/project/part.dart', '''
+    assertFileChangeResult('/home/test/lib/part.dart', '''
 part of the.new.name;
 ''');
   }
diff --git a/pkg/analysis_server/test/services/refactoring/rename_local_test.dart b/pkg/analysis_server/test/services/refactoring/rename_local_test.dart
index 6b8c273..25359cd 100644
--- a/pkg/analysis_server/test/services/refactoring/rename_local_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/rename_local_test.dart
@@ -442,29 +442,42 @@
   }
 
   test_createChange_parameter_named_inOtherFile() async {
-    await indexTestUnit('''
+    var a = convertPath('/home/test/lib/a.dart');
+    var b = convertPath('/home/test/lib/b.dart');
+
+    newFile(a, content: r'''
 class A {
   A({test});
 }
 ''');
-    await indexUnit('/project/test2.dart', '''
-import 'test.dart';
+    newFile(b, content: r'''
+import 'a.dart';
+
 main() {
   new A(test: 2);
 }
 ''');
-    // configure refactoring
+    driver.addFile(a);
+    driver.addFile(b);
+
+    var session = driver.currentSession;
+    testAnalysisResult = await session.getResolvedUnit(a);
+    testFile = testAnalysisResult.path;
+    testCode = testAnalysisResult.content;
+    testUnit = testAnalysisResult.unit;
+
     createRenameRefactoringAtString('test});');
     expect(refactoring.refactoringName, 'Rename Parameter');
     refactoring.newName = 'newName';
-    // validate change
+
     await assertSuccessfulRefactoring('''
 class A {
   A({newName});
 }
 ''');
-    assertFileChangeResult('/project/test2.dart', '''
-import 'test.dart';
+    assertFileChangeResult(b, '''
+import 'a.dart';
+
 main() {
   new A(newName: 2);
 }
@@ -472,7 +485,7 @@
   }
 
   test_createChange_parameter_named_updateHierarchy() async {
-    await indexUnit('/project/test2.dart', '''
+    await indexUnit('/home/test/lib/test2.dart', '''
 library test2;
 class A {
   void foo({int test: 1}) {
@@ -516,7 +529,7 @@
   }
 }
 ''');
-    assertFileChangeResult('/project/test2.dart', '''
+    assertFileChangeResult('/home/test/lib/test2.dart', '''
 library test2;
 class A {
   void foo({int newName: 1}) {
diff --git a/pkg/analysis_server/test/services/refactoring/rename_unit_member_test.dart b/pkg/analysis_server/test/services/refactoring/rename_unit_member_test.dart
index 7ace7de..1f23392 100644
--- a/pkg/analysis_server/test/services/refactoring/rename_unit_member_test.dart
+++ b/pkg/analysis_server/test/services/refactoring/rename_unit_member_test.dart
@@ -69,7 +69,7 @@
     await indexTestUnit('''
 class Test {}
 ''');
-    await indexUnit(convertPath('/project/lib.dart'), '''
+    await indexUnit('/home/test/lib/lib.dart', '''
 library my.lib;
 import 'test.dart';
 
@@ -109,7 +109,7 @@
     await indexTestUnit('''
 class Test {}
 ''');
-    await indexUnit(convertPath('/project/lib.dart'), '''
+    await indexUnit('/home/test/lib/lib.dart', '''
 library my.lib;
 import 'test.dart';
 class A {
@@ -230,11 +230,11 @@
   }
 
   test_checkInitialConditions_outsideOfProject() async {
-    addSource('/other/lib.dart', r'''
+    addPackageFile('aaa', 'lib.dart', r'''
 class A {}
 ''');
     await indexTestUnit('''
-import "${convertAbsolutePathToUri('/other/lib.dart')}";
+import "package:aaa/lib.dart";
 main() {
   A a;
 }
@@ -587,7 +587,7 @@
   }
 
   test_createChange_FunctionElement_imported() async {
-    await indexUnit('/project/foo.dart', r'''
+    await indexUnit('/home/test/lib/foo.dart', r'''
 test() {}
 foo() {}
 ''');
@@ -614,7 +614,7 @@
   foo();
 }
 ''');
-    assertFileChangeResult('/project/foo.dart', '''
+    assertFileChangeResult('/home/test/lib/foo.dart', '''
 newName() {}
 foo() {}
 ''');
@@ -644,6 +644,42 @@
 ''');
   }
 
+  test_createChange_outsideOfProject_referenceInPart() async {
+    newFile('/home/part.dart', content: r'''
+part of test;
+
+Test test2;
+''');
+
+    // To use file:// URI.
+    testFile = convertPath('/home/test/bin/test.dart');
+
+    await indexTestUnit('''
+library test;
+
+part '../../part.dart';
+
+class Test {}
+
+Test test;
+''');
+    createRenameRefactoringAtString('Test {}');
+    refactoring.newName = 'NewName';
+
+    await assertSuccessfulRefactoring('''
+library test;
+
+part '../../part.dart';
+
+class NewName {}
+
+NewName test;
+''');
+
+    expect(refactoringChange.edits, hasLength(1));
+    expect(refactoringChange.edits[0].file, testFile);
+  }
+
   test_createChange_PropertyAccessorElement_getter_declaration() async {
     await _test_createChange_PropertyAccessorElement("test {}");
   }
diff --git a/pkg/analysis_server/test/services/search/search_engine_test.dart b/pkg/analysis_server/test/services/search/search_engine_test.dart
index 009e5fc..16488d7 100644
--- a/pkg/analysis_server/test/services/search/search_engine_test.dart
+++ b/pkg/analysis_server/test/services/search/search_engine_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -7,21 +7,20 @@
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analysis_server/src/services/search/search_engine_internal.dart';
 import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
+import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:analyzer/src/file_system/file_system.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
-import 'package:analyzer/src/dart/analysis/byte_store.dart';
-import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../../mock_sdk.dart';
-
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(SearchEngineImplTest);
@@ -29,7 +28,7 @@
 }
 
 @reflectiveTest
-class SearchEngineImplTest extends Object with ResourceProviderMixin {
+class SearchEngineImplTest with ResourceProviderMixin {
   DartSdk sdk;
   final ByteStore byteStore = new MemoryByteStore();
   final FileContentOverlay contentOverlay = new FileContentOverlay();
@@ -496,7 +495,8 @@
         contentOverlay,
         null,
         new SourceFactory(resolvers, null, resourceProvider),
-        new AnalysisOptionsImpl());
+        new AnalysisOptionsImpl(),
+        enableIndex: true);
   }
 
   static void _assertContainsClass(Set<ClassElement> subtypes, String name) {
diff --git a/pkg/analysis_server/test/src/computer/closingLabels_computer_test.dart b/pkg/analysis_server/test/src/computer/closingLabels_computer_test.dart
index 1c5ec8d..f748909 100644
--- a/pkg/analysis_server/test/src/computer/closingLabels_computer_test.dart
+++ b/pkg/analysis_server/test/src/computer/closingLabels_computer_test.dart
@@ -24,7 +24,7 @@
 
   setUp() {
     super.setUp();
-    sourcePath = resourceProvider.convertPath('/p/lib/source.dart');
+    sourcePath = convertPath('/home/test/lib/test.dart');
   }
 
   test_adjacentLinesExcluded() async {
@@ -400,7 +400,7 @@
 
   Future<List<ClosingLabel>> _computeElements(String sourceContent) async {
     newFile(sourcePath, content: sourceContent);
-    ResolveResult result = await driver.getResult(sourcePath);
+    ResolvedUnitResult result = await session.getResolvedUnit(sourcePath);
     DartUnitClosingLabelsComputer computer =
         new DartUnitClosingLabelsComputer(result.lineInfo, result.unit);
     return computer.compute();
diff --git a/pkg/analysis_server/test/src/computer/folding_computer_test.dart b/pkg/analysis_server/test/src/computer/folding_computer_test.dart
index dee139a..8fcde2d 100644
--- a/pkg/analysis_server/test/src/computer/folding_computer_test.dart
+++ b/pkg/analysis_server/test/src/computer/folding_computer_test.dart
@@ -24,7 +24,7 @@
 
   setUp() {
     super.setUp();
-    sourcePath = resourceProvider.convertPath('/p/lib/source.dart');
+    sourcePath = convertPath('/home/test/lib/test.dart');
   }
 
   test_annotations() async {
@@ -449,7 +449,7 @@
 
   Future<List<FoldingRegion>> _computeRegions(String sourceContent) async {
     newFile(sourcePath, content: sourceContent);
-    ResolveResult result = await driver.getResult(sourcePath);
+    ResolvedUnitResult result = await session.getResolvedUnit(sourcePath);
     DartUnitFoldingComputer computer =
         new DartUnitFoldingComputer(result.lineInfo, result.unit);
     return computer.compute();
diff --git a/pkg/analysis_server/test/src/computer/import_elements_computer_test.dart b/pkg/analysis_server/test/src/computer/import_elements_computer_test.dart
index 3d5f23b..731ca5f 100644
--- a/pkg/analysis_server/test/src/computer/import_elements_computer_test.dart
+++ b/pkg/analysis_server/test/src/computer/import_elements_computer_test.dart
@@ -6,9 +6,8 @@
 
 import 'package:analysis_server/protocol/protocol_generated.dart';
 import 'package:analysis_server/src/computer/import_elements_computer.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
-import 'package:analyzer/src/generated/source.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -52,13 +51,13 @@
   Future<void> createBuilder(String content) async {
     originalContent = content;
     newFile(path, content: content);
-    AnalysisResult result = await driver.getResult(path);
+    ResolvedUnitResult result = await session.getResolvedUnit(path);
     computer = new ImportElementsComputer(resourceProvider, result);
   }
 
   void setUp() {
     super.setUp();
-    path = resourceProvider.convertPath('/test.dart');
+    path = convertPath('/home/test/lib/test.dart');
   }
 
   test_createEdits_addImport_noDirectives() async {
@@ -69,7 +68,7 @@
 ''');
     await computeChanges(<ImportedElements>[
       new ImportedElements(
-          convertPath('/lib/math/math.dart'), '', <String>['Random'])
+          convertPath('/sdk/lib/math/math.dart'), '', <String>['Random'])
     ]);
     assertChanges('''
 import 'dart:math';
@@ -81,12 +80,12 @@
   }
 
   test_createEdits_addImport_noPrefix() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' as foo;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['A'])
+      new ImportedElements(fooFile.path, '', <String>['A'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart' as foo;
@@ -95,12 +94,12 @@
   }
 
   test_createEdits_addImport_prefix() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart';
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, 'foo', <String>['A'])
+      new ImportedElements(fooFile.path, 'foo', <String>['A'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart';
@@ -109,13 +108,13 @@
   }
 
   test_createEdits_addShow_multipleNames() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' show B;
 import 'package:pkg/foo.dart' as foo;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['A', 'C'])
+      new ImportedElements(fooFile.path, '', <String>['A', 'C'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart' show B, A, C;
@@ -124,12 +123,12 @@
   }
 
   test_createEdits_addShow_removeHide() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' show A, B hide C, D;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['C'])
+      new ImportedElements(fooFile.path, '', <String>['C'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart' show A, B, C hide D;
@@ -137,12 +136,12 @@
   }
 
   test_createEdits_addShow_singleName_noPrefix() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' show B;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['A'])
+      new ImportedElements(fooFile.path, '', <String>['A'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart' show B, A;
@@ -150,13 +149,13 @@
   }
 
   test_createEdits_addShow_singleName_prefix() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' show C;
 import 'package:pkg/foo.dart' as foo show B;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, 'foo', <String>['A'])
+      new ImportedElements(fooFile.path, 'foo', <String>['A'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart' show C;
@@ -165,34 +164,34 @@
   }
 
   test_createEdits_alreadyImported_noCombinators() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart';
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['A', 'B'])
+      new ImportedElements(fooFile.path, '', <String>['A', 'B'])
     ]);
     assertNoChanges();
   }
 
   test_createEdits_alreadyImported_withPrefix() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' as foo;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, 'foo', <String>['A', 'B'])
+      new ImportedElements(fooFile.path, 'foo', <String>['A', 'B'])
     ]);
     assertNoChanges();
   }
 
   test_createEdits_alreadyImported_withShow() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' show A;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['A'])
+      new ImportedElements(fooFile.path, '', <String>['A'])
     ]);
     assertNoChanges();
   }
@@ -210,12 +209,12 @@
   }
 
   test_createEdits_invalidUri() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'pakage:pkg/foo.dart';
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['A'])
+      new ImportedElements(fooFile.path, '', <String>['A'])
     ]);
     assertChanges('''
 import 'pakage:pkg/foo.dart';
@@ -230,12 +229,12 @@
   }
 
   test_createEdits_removeHide_firstInCombinator() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' hide A, B, C;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['A'])
+      new ImportedElements(fooFile.path, '', <String>['A'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart' hide B, C;
@@ -243,12 +242,12 @@
   }
 
   test_createEdits_removeHide_lastInCombinator() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' hide A, B, C;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['C'])
+      new ImportedElements(fooFile.path, '', <String>['C'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart' hide A, B;
@@ -256,12 +255,12 @@
   }
 
   test_createEdits_removeHide_middleInCombinator() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' hide A, B, C;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['B'])
+      new ImportedElements(fooFile.path, '', <String>['B'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart' hide A, C;
@@ -269,12 +268,12 @@
   }
 
   test_createEdits_removeHide_multipleCombinators() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' hide A, B, C hide A, B, C;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['B'])
+      new ImportedElements(fooFile.path, '', <String>['B'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart' hide A, C hide A, C;
@@ -282,12 +281,12 @@
   }
 
   test_createEdits_removeHide_multipleNames() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' hide A, B, C hide D, E, F hide G, H, I;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['A', 'E', 'I'])
+      new ImportedElements(fooFile.path, '', <String>['A', 'E', 'I'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart' hide B, C hide D, F hide G, H;
@@ -295,12 +294,12 @@
   }
 
   test_createEdits_removeHideCombinator_first() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' hide A hide B hide C;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['A'])
+      new ImportedElements(fooFile.path, '', <String>['A'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart' hide B hide C;
@@ -308,12 +307,12 @@
   }
 
   test_createEdits_removeHideCombinator_last() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' hide A hide B hide C;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['C'])
+      new ImportedElements(fooFile.path, '', <String>['C'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart' hide A hide B;
@@ -321,12 +320,12 @@
   }
 
   test_createEdits_removeHideCombinator_middle() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' hide A hide B hide C;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['B'])
+      new ImportedElements(fooFile.path, '', <String>['B'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart' hide A hide C;
@@ -334,12 +333,12 @@
   }
 
   test_createEdits_removeHideCombinator_only() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' hide A;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['A'])
+      new ImportedElements(fooFile.path, '', <String>['A'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart';
@@ -347,12 +346,12 @@
   }
 
   test_createEdits_removeHideCombinator_only_multiple() async {
-    Source fooSource = addPackageSource('pkg', 'foo.dart', '');
+    var fooFile = addPackageFile('pkg', 'foo.dart', '');
     await createBuilder('''
 import 'package:pkg/foo.dart' hide A, B;
 ''');
     await computeChanges(<ImportedElements>[
-      new ImportedElements(fooSource.fullName, '', <String>['A', 'B'])
+      new ImportedElements(fooFile.path, '', <String>['A', 'B'])
     ]);
     assertChanges('''
 import 'package:pkg/foo.dart';
diff --git a/pkg/analysis_server/test/src/computer/imported_elements_computer_test.dart b/pkg/analysis_server/test/src/computer/imported_elements_computer_test.dart
index 55c106b..8a5dad4 100644
--- a/pkg/analysis_server/test/src/computer/imported_elements_computer_test.dart
+++ b/pkg/analysis_server/test/src/computer/imported_elements_computer_test.dart
@@ -24,7 +24,7 @@
 
   setUp() {
     super.setUp();
-    sourcePath = resourceProvider.convertPath('/p/lib/source.dart');
+    sourcePath = convertPath('/home/test/lib/test.dart');
   }
 
   test_dartAsync_noPrefix() async {
@@ -43,7 +43,7 @@
     ImportedElements elements2 = elementsList[1];
     ImportedElements asyncElements;
     ImportedElements coreElements;
-    if (elements1.path == convertPath('/lib/core/core.dart')) {
+    if (elements1.path == convertPath('/sdk/lib/core/core.dart')) {
       coreElements = elements1;
       asyncElements = elements2;
     } else {
@@ -51,12 +51,12 @@
       asyncElements = elements1;
     }
     expect(coreElements, isNotNull);
-    expect(coreElements.path, convertPath('/lib/core/core.dart'));
+    expect(coreElements.path, convertPath('/sdk/lib/core/core.dart'));
     expect(coreElements.prefix, '');
     expect(coreElements.elements, unorderedEquals(['String']));
 
     expect(asyncElements, isNotNull);
-    expect(asyncElements.path, convertPath('/lib/async/async.dart'));
+    expect(asyncElements.path, convertPath('/sdk/lib/async/async.dart'));
     expect(asyncElements.prefix, '');
     expect(asyncElements.elements, unorderedEquals(['Future']));
   }
@@ -77,7 +77,7 @@
     ImportedElements elements2 = elementsList[1];
     ImportedElements asyncElements;
     ImportedElements coreElements;
-    if (elements1.path == convertPath('/lib/core/core.dart')) {
+    if (elements1.path == convertPath('/sdk/lib/core/core.dart')) {
       coreElements = elements1;
       asyncElements = elements2;
     } else {
@@ -85,12 +85,12 @@
       asyncElements = elements1;
     }
     expect(coreElements, isNotNull);
-    expect(coreElements.path, convertPath('/lib/core/core.dart'));
+    expect(coreElements.path, convertPath('/sdk/lib/core/core.dart'));
     expect(coreElements.prefix, '');
     expect(coreElements.elements, unorderedEquals(['String']));
 
     expect(asyncElements, isNotNull);
-    expect(asyncElements.path, convertPath('/lib/async/async.dart'));
+    expect(asyncElements.path, convertPath('/sdk/lib/async/async.dart'));
     expect(asyncElements.prefix, 'a');
     expect(asyncElements.elements, unorderedEquals(['Future']));
   }
@@ -108,7 +108,7 @@
     expect(elementsList, hasLength(1));
     ImportedElements elements = elementsList[0];
     expect(elements, isNotNull);
-    expect(elements.path, convertPath('/lib/core/core.dart'));
+    expect(elements.path, convertPath('/sdk/lib/core/core.dart'));
     expect(elements.prefix, '');
     expect(elements.elements, unorderedEquals(['String']));
   }
@@ -127,7 +127,7 @@
     expect(elementsList, hasLength(1));
     ImportedElements elements = elementsList[0];
     expect(elements, isNotNull);
-    expect(elements.path, convertPath('/lib/core/core.dart'));
+    expect(elements.path, convertPath('/sdk/lib/core/core.dart'));
     expect(elements.prefix, 'core');
     expect(elements.elements, unorderedEquals(['String']));
   }
@@ -146,7 +146,7 @@
     expect(elementsList, hasLength(1));
     ImportedElements elements = elementsList[0];
     expect(elements, isNotNull);
-    expect(elements.path, convertPath('/lib/math/math.dart'));
+    expect(elements.path, convertPath('/sdk/lib/math/math.dart'));
     expect(elements.prefix, '');
     expect(elements.elements, unorderedEquals(['Random']));
   }
@@ -170,13 +170,13 @@
 
     ImportedElements mathElements = elementsList[0];
     expect(mathElements, isNotNull);
-    expect(mathElements.path, convertPath('/lib/math/math.dart'));
+    expect(mathElements.path, convertPath('/sdk/lib/math/math.dart'));
     expect(mathElements.prefix, '');
     expect(mathElements.elements, unorderedEquals(['Random']));
 
     ImportedElements coreElements = elementsList[1];
     expect(coreElements, isNotNull);
-    expect(coreElements.path, convertPath('/lib/core/core.dart'));
+    expect(coreElements.path, convertPath('/sdk/lib/core/core.dart'));
     expect(coreElements.prefix, '');
     expect(coreElements.elements, unorderedEquals(['String', 'print']));
   }
@@ -236,7 +236,7 @@
   }
 
   test_package_multipleInSame() async {
-    addPackageSource('foo', 'foo.dart', '''
+    addPackageFile('foo', 'foo.dart', '''
 class A {
   static String a = '';
 }
@@ -256,13 +256,13 @@
     expect(elementsList, hasLength(1));
     ImportedElements elements = elementsList[0];
     expect(elements, isNotNull);
-    expect(elements.path, convertPath('/pubcache/foo/lib/foo.dart'));
+    expect(elements.path, convertPath('/.pub-cache/foo/lib/foo.dart'));
     expect(elements.prefix, '');
     expect(elements.elements, unorderedEquals(['A', 'B']));
   }
 
   test_package_noPrefix() async {
-    addPackageSource('foo', 'foo.dart', '''
+    addPackageFile('foo', 'foo.dart', '''
 class Foo {
   static String first = '';
 }
@@ -279,13 +279,13 @@
     expect(elementsList, hasLength(1));
     ImportedElements elements = elementsList[0];
     expect(elements, isNotNull);
-    expect(elements.path, convertPath('/pubcache/foo/lib/foo.dart'));
+    expect(elements.path, convertPath('/.pub-cache/foo/lib/foo.dart'));
     expect(elements.prefix, '');
     expect(elements.elements, unorderedEquals(['Foo']));
   }
 
   test_package_prefix_selected() async {
-    addPackageSource('foo', 'foo.dart', '''
+    addPackageFile('foo', 'foo.dart', '''
 class Foo {
   static String first = '';
 }
@@ -302,13 +302,13 @@
     expect(elementsList, hasLength(1));
     ImportedElements elements = elementsList[0];
     expect(elements, isNotNull);
-    expect(elements.path, convertPath('/pubcache/foo/lib/foo.dart'));
+    expect(elements.path, convertPath('/.pub-cache/foo/lib/foo.dart'));
     expect(elements.prefix, 'f');
     expect(elements.elements, unorderedEquals(['Foo']));
   }
 
   test_package_prefix_unselected() async {
-    addPackageSource('foo', 'foo.dart', '''
+    addPackageFile('foo', 'foo.dart', '''
 class Foo {
   static String first = '';
 }
@@ -325,13 +325,13 @@
     expect(elementsList, hasLength(1));
     ImportedElements elements = elementsList[0];
     expect(elements, isNotNull);
-    expect(elements.path, convertPath('/pubcache/foo/lib/foo.dart'));
+    expect(elements.path, convertPath('/.pub-cache/foo/lib/foo.dart'));
     expect(elements.prefix, '');
     expect(elements.elements, unorderedEquals(['Foo']));
   }
 
   test_package_prefixedAndNot() async {
-    addPackageSource('foo', 'foo.dart', '''
+    addPackageFile('foo', 'foo.dart', '''
 class Foo {
   static String first = '';
   static String second = '';
@@ -362,12 +362,13 @@
     }
 
     expect(notPrefixedElements, isNotNull);
-    expect(notPrefixedElements.path, convertPath('/pubcache/foo/lib/foo.dart'));
+    expect(
+        notPrefixedElements.path, convertPath('/.pub-cache/foo/lib/foo.dart'));
     expect(notPrefixedElements.prefix, '');
     expect(notPrefixedElements.elements, unorderedEquals(['Foo']));
 
     expect(prefixedElements, isNotNull);
-    expect(prefixedElements.path, convertPath('/pubcache/foo/lib/foo.dart'));
+    expect(prefixedElements.path, convertPath('/.pub-cache/foo/lib/foo.dart'));
     expect(prefixedElements.prefix, 'f');
     expect(prefixedElements.elements, unorderedEquals(['Foo']));
   }
@@ -392,7 +393,7 @@
   Future<List<ImportedElements>> _computeElements(
       String sourceContent, int offset, int length) async {
     newFile(sourcePath, content: sourceContent);
-    ResolveResult result = await driver.getResult(sourcePath);
+    ResolvedUnitResult result = await session.getResolvedUnit(sourcePath);
     ImportedElementsComputer computer =
         new ImportedElementsComputer(result.unit, offset, length);
     return computer.compute();
diff --git a/pkg/analysis_server/test/src/computer/outline_computer_test.dart b/pkg/analysis_server/test/src/computer/outline_computer_test.dart
index 340045a..eb45aad 100644
--- a/pkg/analysis_server/test/src/computer/outline_computer_test.dart
+++ b/pkg/analysis_server/test/src/computer/outline_computer_test.dart
@@ -5,7 +5,6 @@
 import 'dart:async';
 
 import 'package:analysis_server/src/computer/computer_outline.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:meta/meta.dart';
 import 'package:test/test.dart';
@@ -27,15 +26,15 @@
   @override
   void setUp() {
     super.setUp();
-    testPath = resourceProvider.convertPath('/test.dart');
+    testPath = convertPath('/home/test/lib/test.dart');
   }
 
   Future<Outline> _computeOutline(String code) async {
     testCode = code;
     newFile(testPath, content: code);
-    AnalysisResult analysisResult = await driver.getResult(testPath);
+    var resolveResult = await session.getResolvedUnit(testPath);
     return new DartUnitOutlineComputer(
-            testPath, analysisResult.lineInfo, analysisResult.unit,
+            testPath, resolveResult.lineInfo, resolveResult.unit,
             withBasicFlutter: true)
         .compute();
   }
@@ -558,7 +557,7 @@
   }
 
   test_isTest_isTestGroup() async {
-    addMetaPackageSource();
+    addMetaPackage();
     Outline outline = await _computeOutline('''
 import 'package:meta/meta.dart';
 
@@ -1057,6 +1056,7 @@
     Outline unitOutline = await _computeOutline('''
 typedef String FTA<K, V>(int i, String s);
 typedef FTB(int p);
+typedef GTAF<T> = void Function<S>(T t, S s);
 class A<T> {}
 class B {}
 class CTA<T> = A<T> with B;
@@ -1067,7 +1067,7 @@
 set propB(int v) {}
 ''');
     List<Outline> topOutlines = unitOutline.children;
-    expect(topOutlines, hasLength(10));
+    expect(topOutlines, hasLength(11));
     // FTA
     {
       Outline outline = topOutlines[0];
@@ -1098,9 +1098,24 @@
       expect(element.parameters, "(int p)");
       expect(element.returnType, "");
     }
+    // GenericTypeAlias - function
+    {
+      Outline outline = topOutlines[2];
+      Element element = outline.element;
+      expect(element.kind, ElementKind.FUNCTION_TYPE_ALIAS);
+      expect(element.name, "GTAF");
+      expect(element.typeParameters, '<T>');
+      {
+        Location location = element.location;
+        expect(location.offset, testCode.indexOf("GTAF<T> ="));
+        expect(location.length, "GTAF".length);
+      }
+      expect(element.parameters, "(T t, S s)");
+      expect(element.returnType, "void");
+    }
     // CTA
     {
-      Outline outline = topOutlines[4];
+      Outline outline = topOutlines[5];
       Element element = outline.element;
       expect(element.kind, ElementKind.CLASS_TYPE_ALIAS);
       expect(element.name, "CTA");
@@ -1115,7 +1130,7 @@
     }
     // CTB
     {
-      Outline outline = topOutlines[5];
+      Outline outline = topOutlines[6];
       Element element = outline.element;
       expect(element.kind, ElementKind.CLASS_TYPE_ALIAS);
       expect(element.name, 'CTB');
@@ -1124,7 +1139,7 @@
     }
     // fA
     {
-      Outline outline = topOutlines[6];
+      Outline outline = topOutlines[7];
       Element element = outline.element;
       expect(element.kind, ElementKind.FUNCTION);
       expect(element.name, "fA");
@@ -1138,7 +1153,7 @@
     }
     // fB
     {
-      Outline outline = topOutlines[7];
+      Outline outline = topOutlines[8];
       Element element = outline.element;
       expect(element.kind, ElementKind.FUNCTION);
       expect(element.name, "fB");
@@ -1152,7 +1167,7 @@
     }
     // propA
     {
-      Outline outline = topOutlines[8];
+      Outline outline = topOutlines[9];
       Element element = outline.element;
       expect(element.kind, ElementKind.GETTER);
       expect(element.name, "propA");
@@ -1166,7 +1181,7 @@
     }
     // propB
     {
-      Outline outline = topOutlines[9];
+      Outline outline = topOutlines[10];
       Element element = outline.element;
       expect(element.kind, ElementKind.SETTER);
       expect(element.name, "propB");
diff --git a/pkg/analysis_server/test/src/domains/execution/completion_test.dart b/pkg/analysis_server/test/src/domains/execution/completion_test.dart
index 4ba0ecd..41529c6 100644
--- a/pkg/analysis_server/test/src/domains/execution/completion_test.dart
+++ b/pkg/analysis_server/test/src/domains/execution/completion_test.dart
@@ -25,7 +25,7 @@
   RuntimeCompletionResult result;
 
   void addContextFile(String content) {
-    contextFile = convertPath('/test/lib/context.dart');
+    contextFile = convertPath('/home/test/lib/context.dart');
     addSource(contextFile, content);
 
     contextOffset = content.indexOf('// context line');
@@ -131,13 +131,13 @@
   }
 
   test_inPart() async {
-    addSource('/test/lib/a.dart', r'''
+    addSource('/home/test/lib/a.dart', r'''
 part 'b.dart';
 part 'context.dart';
 
 int a;
 ''');
-    addSource('/test/lib/b.dart', r'''
+    addSource('/home/test/lib/b.dart', r'''
 part of 'a.dart';
 
 double b;
diff --git a/pkg/analysis_server/test/src/domains/execution/test_all.dart b/pkg/analysis_server/test/src/domains/execution/test_all.dart
new file mode 100644
index 0000000..20e6141
--- /dev/null
+++ b/pkg/analysis_server/test/src/domains/execution/test_all.dart
@@ -0,0 +1,13 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'completion_test.dart' as completion_test;
+
+main() {
+  defineReflectiveSuite(() {
+    completion_test.main();
+  });
+}
diff --git a/pkg/analysis_server/test/src/domains/test_all.dart b/pkg/analysis_server/test/src/domains/test_all.dart
new file mode 100644
index 0000000..81a4c82
--- /dev/null
+++ b/pkg/analysis_server/test/src/domains/test_all.dart
@@ -0,0 +1,13 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'execution/test_all.dart' as execution_test;
+
+main() {
+  defineReflectiveSuite(() {
+    execution_test.main();
+  });
+}
diff --git a/pkg/analysis_server/test/src/flutter/flutter_correction_test.dart b/pkg/analysis_server/test/src/flutter/flutter_correction_test.dart
index 4501d68..1d7ba263 100644
--- a/pkg/analysis_server/test/src/flutter/flutter_correction_test.dart
+++ b/pkg/analysis_server/test/src/flutter/flutter_correction_test.dart
@@ -125,11 +125,9 @@
 
   void _createCorrections() {
     corrections = new FlutterCorrections(
-        file: testFile,
-        fileContent: testCode,
-        selectionOffset: offset,
-        selectionLength: length,
-        session: testAnalysisResult.session,
-        unit: testUnit);
+      resolveResult: testAnalysisResult,
+      selectionOffset: offset,
+      selectionLength: length,
+    );
   }
 }
diff --git a/pkg/analysis_server/test/src/flutter/flutter_outline_computer_test.dart b/pkg/analysis_server/test/src/flutter/flutter_outline_computer_test.dart
index e4b62c4..947fb79 100644
--- a/pkg/analysis_server/test/src/flutter/flutter_outline_computer_test.dart
+++ b/pkg/analysis_server/test/src/flutter/flutter_outline_computer_test.dart
@@ -6,7 +6,7 @@
 
 import 'package:analysis_server/src/flutter/flutter_outline_computer.dart';
 import 'package:analysis_server/src/protocol_server.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -22,13 +22,13 @@
 class FlutterOutlineComputerTest extends AbstractContextTest {
   String testPath;
   String testCode;
-  AnalysisResult analysisResult;
+  ResolvedUnitResult resolveResult;
   FlutterOutlineComputer computer;
 
   @override
   void setUp() {
     super.setUp();
-    testPath = resourceProvider.convertPath('/test.dart');
+    testPath = convertPath('/home/test/lib/test.dart');
     addFlutterPackage();
   }
 
@@ -288,7 +288,7 @@
   }
 
   test_parentAssociationLabel() async {
-    newFile('/a.dart', content: r'''
+    newFile('/home/test/lib/a.dart', content: r'''
 import 'package:flutter/widgets.dart';
 
 class WidgetA extends StatelessWidget {
@@ -359,7 +359,7 @@
   test_render_BAD_part() async {
     // Use test.dart as a part of a library.
     // Add the library to the driver so that it is analyzed before the part.
-    var libPath = newFile('/test_lib.dart', content: r'''
+    var libPath = newFile('/home/test/lib/test_lib.dart', content: r'''
 part 'test.dart';
 import 'package:flutter/widgets.dart';
 ''').path;
@@ -379,7 +379,7 @@
 ''');
 
     // Analysis is successful, no errors.
-    expect(analysisResult.errors, isEmpty);
+    expect(resolveResult.errors, isEmpty);
 
     // No instrumentation, because not a library.
     expect(computer.instrumentedCode, isNull);
@@ -431,8 +431,7 @@
   }
 
   test_render_instrumentedCode_rewriteUri_file() async {
-    testPath = resourceProvider.convertPath('/home/user/test/test.dart');
-    var libFile = newFile('/home/user/test/my_lib.dart', content: '');
+    newFile('/home/test/lib/my_lib.dart');
 
     await _computeOutline('''
 import 'package:flutter/widgets.dart';
@@ -451,7 +450,7 @@
         computer.instrumentedCode,
         '''
 import 'package:flutter/widgets.dart';
-import '${libFile.toUri()}';
+import 'package:test/my_lib.dart';
 
 class MyWidget extends StatelessWidget {
   MyWidget.forDesignTime();
@@ -466,11 +465,7 @@
   }
 
   test_render_instrumentedCode_rewriteUri_package() async {
-    packageMap['test'] = [newFolder('/home/user/test/lib')];
-
-    testPath = resourceProvider.convertPath('/home/user/test/lib/test.dart');
-    newFile('/home/user/test/lib/my_lib.dart', content: '');
-    configureDriver();
+    newFile('/home/test/lib/my_lib.dart');
 
     await _computeOutline('''
 import 'package:flutter/widgets.dart';
@@ -630,9 +625,9 @@
   Future<FlutterOutline> _computeOutline(String code) async {
     testCode = code;
     newFile(testPath, content: code);
-    analysisResult = await driver.getResult(testPath);
-    computer = new FlutterOutlineComputer(
-        testPath, testCode, analysisResult.lineInfo, analysisResult.unit);
+    resolveResult = await session.getResolvedUnit(testPath);
+    computer = new FlutterOutlineComputer(testPath, testCode,
+        resolveResult.lineInfo, resolveResult.unit, resolveResult.typeProvider);
     return computer.compute();
   }
 
diff --git a/pkg/analysis_server/test/src/lsp/lsp_packet_transformer_test.dart b/pkg/analysis_server/test/src/lsp/lsp_packet_transformer_test.dart
new file mode 100644
index 0000000..884a8cf
--- /dev/null
+++ b/pkg/analysis_server/test/src/lsp/lsp_packet_transformer_test.dart
@@ -0,0 +1,53 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:convert';
+
+import 'package:analysis_server/src/lsp/lsp_packet_transformer.dart';
+import 'package:test/test.dart';
+
+main() {
+  group('lsp_packet_transformer', () {
+    test('transforms data received as individual bytes', () async {
+      final payload = '{ json payload }';
+      final lspPacket = makeLspPacket(payload);
+      final output = await new Stream.fromIterable([lspPacket])
+          .transform(new LspPacketTransformer())
+          .toList();
+      expect(output, equals([payload]));
+    });
+
+    test('transforms data received in chunks', () async {
+      final payload = '{ json\n payload\n  }';
+      final lspPacket = makeLspPacket(payload);
+      // Separate each byte into it's own "packet" to simulate chunked data
+      // where all the bytes for a single LSP packet don't arrive in one
+      // item to the stream.
+      final dataPackets = lspPacket.map((b) => [b]);
+      final output = await new Stream.fromIterable(dataPackets)
+          .transform(new LspPacketTransformer())
+          .toList();
+      expect(output, equals([payload]));
+    });
+
+    test('handles unicode characters', () async {
+      // This file is saved as UTF8.
+      final payload = '{ json payload 🎉 }';
+      final lspPacket = makeLspPacket(payload);
+      final output = await new Stream.fromIterable([lspPacket])
+          .transform(new LspPacketTransformer())
+          .toList();
+      expect(output, equals([payload]));
+    });
+  });
+}
+
+List<int> makeLspPacket(String json, [String contentType]) {
+  final utf8EncodedBody = utf8.encode(json);
+  final header = 'Content-Length: ${utf8EncodedBody.length}\r\n'
+      'Content-Type: application/vscode-jsonrpc; charset=utf-8\r\n\r\n';
+  final asciiEncodedHeader = ascii.encode(header);
+
+  return asciiEncodedHeader.followedBy(utf8EncodedBody).toList();
+}
diff --git a/pkg/analysis_server/test/src/plugin/plugin_locator_test.dart b/pkg/analysis_server/test/src/plugin/plugin_locator_test.dart
index db3d3f9..a01ca1f 100644
--- a/pkg/analysis_server/test/src/plugin/plugin_locator_test.dart
+++ b/pkg/analysis_server/test/src/plugin/plugin_locator_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -14,7 +14,7 @@
 }
 
 @reflectiveTest
-class PluginLocatorTest extends Object with ResourceProviderMixin {
+class PluginLocatorTest with ResourceProviderMixin {
   String packageRoot;
   String pubspecPath;
   String defaultDirPath;
diff --git a/pkg/analysis_server/test/src/plugin/plugin_manager_test.dart b/pkg/analysis_server/test/src/plugin/plugin_manager_test.dart
index 6837470..186e284 100644
--- a/pkg/analysis_server/test/src/plugin/plugin_manager_test.dart
+++ b/pkg/analysis_server/test/src/plugin/plugin_manager_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -405,7 +405,7 @@
 }
 
 @reflectiveTest
-class PluginManagerTest extends Object with ResourceProviderMixin {
+class PluginManagerTest with ResourceProviderMixin {
   String byteStorePath;
   String sdkPath;
   TestNotificationManager notificationManager;
@@ -535,7 +535,7 @@
 }
 
 @reflectiveTest
-class PluginSessionTest extends Object with ResourceProviderMixin {
+class PluginSessionTest with ResourceProviderMixin {
   TestNotificationManager notificationManager;
   String pluginPath;
   String executionPath;
diff --git a/pkg/analysis_server/test/src/plugin/plugin_watcher_test.dart b/pkg/analysis_server/test/src/plugin/plugin_watcher_test.dart
index 058ee15..ca02919 100644
--- a/pkg/analysis_server/test/src/plugin/plugin_watcher_test.dart
+++ b/pkg/analysis_server/test/src/plugin/plugin_watcher_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -8,24 +8,24 @@
 import 'package:analysis_server/src/plugin/plugin_locator.dart';
 import 'package:analysis_server/src/plugin/plugin_manager.dart';
 import 'package:analysis_server/src/plugin/plugin_watcher.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/context/context_root.dart';
+import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
+import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:analyzer/src/dart/analysis/session.dart';
 import 'package:analyzer/src/generated/engine.dart' show AnalysisOptionsImpl;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
-import 'package:analyzer/src/dart/analysis/byte_store.dart';
-import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:path/path.dart' as path;
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../../mock_sdk.dart';
-
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(PluginWatcherTest);
@@ -33,7 +33,7 @@
 }
 
 @reflectiveTest
-class PluginWatcherTest extends Object with ResourceProviderMixin {
+class PluginWatcherTest with ResourceProviderMixin {
   TestPluginManager manager;
   PluginWatcher watcher;
 
@@ -119,7 +119,7 @@
   AnalysisSession currentSession;
   AnalysisOptionsImpl analysisOptions = new AnalysisOptionsImpl();
 
-  final _resultController = new StreamController<AnalysisResult>();
+  final _resultController = new StreamController<ResolvedUnitResult>();
 
   TestDriver(this.resourceProvider, ContextRoot contextRoot) {
     path.Context pathContext = resourceProvider.pathContext;
@@ -147,12 +147,11 @@
     currentSession = new AnalysisSessionImpl(this);
   }
 
-  Stream<AnalysisResult> get results => _resultController.stream;
+  Stream<ResolvedUnitResult> get results => _resultController.stream;
 
   Future<void> computeResult(String uri) {
     FileState file = fsState.getFileForUri(Uri.parse(uri));
-    AnalysisResult result = new AnalysisResult(this, null, file.path, null,
-        true, null, null, false, null, null, null, null);
+    var result = new _ResolvedUnitResultMock(currentSession, file.path);
     _resultController.add(result);
     return new Future.delayed(new Duration(milliseconds: 1));
   }
@@ -182,3 +181,15 @@
     removedContextRoots.add(contextRoot);
   }
 }
+
+class _ResolvedUnitResultMock implements ResolvedUnitResult {
+  @override
+  final AnalysisSession session;
+
+  @override
+  final String path;
+
+  _ResolvedUnitResultMock(this.session, this.path);
+
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/add_type_annotation_test.dart b/pkg/analysis_server/test/src/services/correction/assist/add_type_annotation_test.dart
new file mode 100644
index 0000000..9d1e8fb
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/add_type_annotation_test.dart
@@ -0,0 +1,576 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AddTypeAnnotationTest);
+  });
+}
+
+@reflectiveTest
+class AddTypeAnnotationTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.ADD_TYPE_ANNOTATION;
+
+  test_classField_final() async {
+    await resolveTestUnit('''
+class A {
+  final f = 0;
+}
+''');
+    await assertHasAssistAt('final ', '''
+class A {
+  final int f = 0;
+}
+''');
+  }
+
+  test_classField_int() async {
+    await resolveTestUnit('''
+class A {
+  var f = 0;
+}
+''');
+    await await assertHasAssistAt('var ', '''
+class A {
+  int f = 0;
+}
+''');
+  }
+
+  test_declaredIdentifier() async {
+    await resolveTestUnit('''
+main(List<String> items) {
+  for (var item in items) {
+  }
+}
+''');
+    // on identifier
+    await assertHasAssistAt('item in', '''
+main(List<String> items) {
+  for (String item in items) {
+  }
+}
+''');
+    // on "for"
+    await assertHasAssistAt('for (', '''
+main(List<String> items) {
+  for (String item in items) {
+  }
+}
+''');
+  }
+
+  test_declaredIdentifier_addImport_dartUri() async {
+    addSource('/home/test/lib/my_lib.dart', r'''
+import 'dart:collection';
+List<HashMap<String, int>> getMap() => null;
+''');
+    await resolveTestUnit('''
+import 'my_lib.dart';
+main() {
+  for (var map in getMap()) {
+  }
+}
+''');
+    await assertHasAssistAt('map in', '''
+import 'dart:collection';
+
+import 'my_lib.dart';
+main() {
+  for (HashMap<String, int> map in getMap()) {
+  }
+}
+''');
+  }
+
+  test_declaredIdentifier_final() async {
+    await resolveTestUnit('''
+main(List<String> items) {
+  for (final item in items) {
+  }
+}
+''');
+    await assertHasAssistAt('item in', '''
+main(List<String> items) {
+  for (final String item in items) {
+  }
+}
+''');
+  }
+
+  test_declaredIdentifier_generic() async {
+    await resolveTestUnit('''
+class A<T> {
+  main(List<List<T>> items) {
+    for (var item in items) {
+    }
+  }
+}
+''');
+    await assertHasAssistAt('item in', '''
+class A<T> {
+  main(List<List<T>> items) {
+    for (List<T> item in items) {
+    }
+  }
+}
+''');
+  }
+
+  test_declaredIdentifier_hasTypeAnnotation() async {
+    await resolveTestUnit('''
+main(List<String> items) {
+  for (String item in items) {
+  }
+}
+''');
+    await assertNoAssistAt('item in');
+  }
+
+  test_declaredIdentifier_inForEachBody() async {
+    await resolveTestUnit('''
+main(List<String> items) {
+  for (var item in items) {
+    42;
+  }
+}
+''');
+    await assertNoAssistAt('42;');
+  }
+
+  test_declaredIdentifier_unknownType() async {
+    verifyNoTestUnitErrors = false;
+    await resolveTestUnit('''
+main() {
+  for (var item in unknownList) {
+  }
+}
+''');
+    await assertNoAssistAt('item in');
+  }
+
+  test_local_addImport_dartUri() async {
+    addSource('/home/test/lib/my_lib.dart', r'''
+import 'dart:collection';
+HashMap<String, int> getMap() => null;
+''');
+    await resolveTestUnit('''
+import 'my_lib.dart';
+main() {
+  var v = getMap();
+}
+''');
+    await assertHasAssistAt('v =', '''
+import 'dart:collection';
+
+import 'my_lib.dart';
+main() {
+  HashMap<String, int> v = getMap();
+}
+''');
+  }
+
+  test_local_addImport_notLibraryUnit() async {
+    addSource('/home/test/lib/my_lib.dart', r'''
+import 'dart:collection';
+HashMap<String, int> getMap() => null;
+''');
+
+    var appCode = r'''
+library my_app;
+import 'my_lib.dart';
+part 'test.dart';
+''';
+    var partCode = r'''
+part of my_app;
+main() {
+  var /*caret*/v = getMap();
+}
+''';
+
+    var appPath = convertPath('/home/test/lib/app.dart');
+    addSource(appPath, appCode);
+    addSource(testFile, partCode);
+    await resolveTestUnit(partCode);
+
+    await assertHasAssist('''
+part of my_app;
+main() {
+  HashMap<String, int> /*caret*/v = getMap();
+}
+''', additionallyChangedFiles: {
+      appPath: [
+        appCode,
+        '''
+library my_app;
+import 'dart:collection';
+
+import 'my_lib.dart';
+part 'test.dart';
+'''
+      ]
+    });
+  }
+
+  test_local_addImport_relUri() async {
+    testFile = convertPath('/home/test/bin/test.dart');
+    addSource('/home/test/bin/aa/bbb/lib_a.dart', r'''
+class MyClass {}
+''');
+    addSource('/home/test/bin/ccc/lib_b.dart', r'''
+import '../aa/bbb/lib_a.dart';
+MyClass newMyClass() => null;
+''');
+    await resolveTestUnit('''
+import 'ccc/lib_b.dart';
+main() {
+  var v = newMyClass();
+}
+''');
+    await assertHasAssistAt('v =', '''
+import 'aa/bbb/lib_a.dart';
+import 'ccc/lib_b.dart';
+main() {
+  MyClass v = newMyClass();
+}
+''');
+  }
+
+  test_local_bottom() async {
+    await resolveTestUnit('''
+main() {
+  var v = throw 42;
+}
+''');
+    await assertNoAssistAt('var ');
+  }
+
+  test_local_Function() async {
+    await resolveTestUnit('''
+main() {
+  var v = () => 1;
+}
+''');
+    await assertHasAssistAt('v =', '''
+main() {
+  int Function() v = () => 1;
+}
+''');
+  }
+
+  test_local_generic_literal() async {
+    await resolveTestUnit('''
+class A {
+  main(List<int> items) {
+    var v = items;
+  }
+}
+''');
+    await assertHasAssistAt('v =', '''
+class A {
+  main(List<int> items) {
+    List<int> v = items;
+  }
+}
+''');
+  }
+
+  test_local_generic_local() async {
+    await resolveTestUnit('''
+class A<T> {
+  main(List<T> items) {
+    var v = items;
+  }
+}
+''');
+    await assertHasAssistAt('v =', '''
+class A<T> {
+  main(List<T> items) {
+    List<T> v = items;
+  }
+}
+''');
+  }
+
+  test_local_hasTypeAnnotation() async {
+    await resolveTestUnit('''
+main() {
+  int v = 42;
+}
+''');
+    await assertNoAssistAt(' = 42');
+  }
+
+  test_local_int() async {
+    await resolveTestUnit('''
+main() {
+  var v = 0;
+}
+''');
+    await assertHasAssistAt('v =', '''
+main() {
+  int v = 0;
+}
+''');
+  }
+
+  test_local_List() async {
+    await resolveTestUnit('''
+main() {
+  var v = <String>[];
+}
+''');
+    await assertHasAssistAt('v =', '''
+main() {
+  List<String> v = <String>[];
+}
+''');
+  }
+
+  test_local_localType() async {
+    await resolveTestUnit('''
+class C {}
+C f() => null;
+main() {
+  var x = f();
+}
+''');
+    await assertHasAssistAt('x =', '''
+class C {}
+C f() => null;
+main() {
+  C x = f();
+}
+''');
+  }
+
+  test_local_multiple() async {
+    await resolveTestUnit('''
+main() {
+  var a = 1, b = '';
+}
+''');
+    await assertNoAssistAt('var ');
+  }
+
+  test_local_noValue() async {
+    verifyNoTestUnitErrors = false;
+    await resolveTestUnit('''
+main() {
+  var v;
+}
+''');
+    await assertNoAssistAt('var ');
+  }
+
+  test_local_null() async {
+    await resolveTestUnit('''
+main() {
+  var v = null;
+}
+''');
+    await assertNoAssistAt('var ');
+  }
+
+  test_local_onInitializer() async {
+    await resolveTestUnit('''
+main() {
+  var abc = 0;
+}
+''');
+    await assertNoAssistAt('0;');
+  }
+
+  test_local_onName() async {
+    await resolveTestUnit('''
+main() {
+  var abc = 0;
+}
+''');
+    await assertHasAssistAt('bc', '''
+main() {
+  int abc = 0;
+}
+''');
+  }
+
+  test_local_onVar() async {
+    await resolveTestUnit('''
+main() {
+  var v = 0;
+}
+''');
+    await assertHasAssistAt('var ', '''
+main() {
+  int v = 0;
+}
+''');
+  }
+
+  test_local_unknown() async {
+    verifyNoTestUnitErrors = false;
+    await resolveTestUnit('''
+main() {
+  var v = unknownVar;
+}
+''');
+    await assertNoAssistAt('var ');
+  }
+
+  test_parameter() async {
+    await resolveTestUnit('''
+foo(f(int p)) {}
+main() {
+  foo((test) {});
+}
+''');
+    await assertHasAssistAt('test', '''
+foo(f(int p)) {}
+main() {
+  foo((int test) {});
+}
+''');
+  }
+
+  test_parameter_hasExplicitType() async {
+    await resolveTestUnit('''
+foo(f(int p)) {}
+main() {
+  foo((num test) {});
+}
+''');
+    await assertNoAssistAt('test');
+  }
+
+  test_parameter_noPropagatedType() async {
+    await resolveTestUnit('''
+foo(f(p)) {}
+main() {
+  foo((test) {});
+}
+''');
+    await assertNoAssistAt('test');
+  }
+
+  test_privateType_closureParameter() async {
+    addSource('/home/test/lib/my_lib.dart', '''
+library my_lib;
+class A {}
+class _B extends A {}
+foo(f(_B p)) {}
+''');
+    await resolveTestUnit('''
+import 'my_lib.dart';
+main() {
+  foo((test) {});
+}
+ ''');
+    await assertNoAssistAt('test)');
+  }
+
+  test_privateType_declaredIdentifier() async {
+    addSource('/home/test/lib/my_lib.dart', '''
+library my_lib;
+class A {}
+class _B extends A {}
+List<_B> getValues() => [];
+''');
+    await resolveTestUnit('''
+import 'my_lib.dart';
+class A<T> {
+  main() {
+    for (var item in getValues()) {
+    }
+  }
+}
+''');
+    await assertNoAssistAt('var item');
+  }
+
+  test_privateType_list() async {
+    // This is now failing because we're suggesting "List" rather than nothing.
+    // Is it really better to produce nothing?
+    addSource('/home/test/lib/my_lib.dart', '''
+library my_lib;
+class A {}
+class _B extends A {}
+List<_B> getValues() => [];
+''');
+    await resolveTestUnit('''
+import 'my_lib.dart';
+main() {
+  var v = getValues();
+}
+''');
+    await assertHasAssistAt('var ', '''
+import 'my_lib.dart';
+main() {
+  List v = getValues();
+}
+''');
+  }
+
+  test_privateType_sameLibrary() async {
+    await resolveTestUnit('''
+class _A {}
+_A getValue() => new _A();
+main() {
+  var v = getValue();
+}
+''');
+    await assertHasAssistAt('var ', '''
+class _A {}
+_A getValue() => new _A();
+main() {
+  _A v = getValue();
+}
+''');
+  }
+
+  test_privateType_variable() async {
+    addSource('/home/test/lib/my_lib.dart', '''
+library my_lib;
+class A {}
+class _B extends A {}
+_B getValue() => new _B();
+''');
+    await resolveTestUnit('''
+import 'my_lib.dart';
+main() {
+  var v = getValue();
+}
+''');
+    await assertNoAssistAt('var ');
+  }
+
+  test_topLevelField_int() async {
+    await resolveTestUnit('''
+var V = 0;
+''');
+    await assertHasAssistAt('var ', '''
+int V = 0;
+''');
+  }
+
+  test_topLevelField_multiple() async {
+    await resolveTestUnit('''
+var A = 1, V = '';
+''');
+    await assertNoAssistAt('var ');
+  }
+
+  test_topLevelField_noValue() async {
+    await resolveTestUnit('''
+var V;
+''');
+    await assertNoAssistAt('var ');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/assign_to_local_variable_test.dart b/pkg/analysis_server/test/src/services/correction/assist/assign_to_local_variable_test.dart
new file mode 100644
index 0000000..1668ea4
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/assign_to_local_variable_test.dart
@@ -0,0 +1,100 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/protocol/protocol_common.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AssignToLocalVariableTest);
+  });
+}
+
+@reflectiveTest
+class AssignToLocalVariableTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.ASSIGN_TO_LOCAL_VARIABLE;
+
+  test_alreadyAssignment() async {
+    await resolveTestUnit('''
+main() {
+  var vvv;
+  vvv = 42;
+}
+''');
+    await assertNoAssistAt('vvv =');
+  }
+
+  test_inClosure() async {
+    await resolveTestUnit(r'''
+main() {
+  print(() {
+    12345;
+  });
+}
+''');
+    await assertHasAssistAt('345', '''
+main() {
+  print(() {
+    var i = 12345;
+  });
+}
+''');
+  }
+
+  test_invocation() async {
+    await resolveTestUnit('''
+main() {
+  List<int> bytes;
+  readBytes();
+}
+List<int> readBytes() => <int>[];
+''');
+    await assertHasAssistAt('readBytes();', '''
+main() {
+  List<int> bytes;
+  var readBytes = readBytes();
+}
+List<int> readBytes() => <int>[];
+''');
+    assertLinkedGroup(
+        0,
+        ['readBytes = '],
+        expectedSuggestions(LinkedEditSuggestionKind.VARIABLE,
+            ['list', 'bytes2', 'readBytes']));
+  }
+
+  test_invocationArgument() async {
+    await resolveTestUnit(r'''
+main() {
+  f(12345);
+}
+void f(p) {}
+''');
+    await assertNoAssistAt('345');
+  }
+
+  test_throw() async {
+    await resolveTestUnit('''
+main() {
+  throw 42;
+}
+''');
+    await assertNoAssistAt('throw ');
+  }
+
+  test_void() async {
+    await resolveTestUnit('''
+main() {
+  f();
+}
+void f() {}
+''');
+    await assertNoAssistAt('f();');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/assist_processor.dart b/pkg/analysis_server/test/src/services/correction/assist/assist_processor.dart
new file mode 100644
index 0000000..450bc7e
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/assist_processor.dart
@@ -0,0 +1,178 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analysis_server/plugin/edit/assist/assist_core.dart';
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analysis_server/src/services/correction/assist_internal.dart';
+import 'package:analyzer_plugin/protocol/protocol_common.dart'
+    hide AnalysisError;
+import 'package:analyzer_plugin/protocol/protocol_common.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test/test.dart';
+
+import '../../../../abstract_single_unit.dart';
+
+/// A base class defining support for writing assist processor tests.
+abstract class AssistProcessorTest extends AbstractSingleUnitTest {
+  int _offset;
+  int _length;
+
+  SourceChange _change;
+  String _resultCode;
+
+  /// Return the kind of assist expected by this class.
+  AssistKind get kind;
+
+  void assertExitPosition({String before, String after}) {
+    Position exitPosition = _change.selection;
+    expect(exitPosition, isNotNull);
+    expect(exitPosition.file, testFile);
+    if (before != null) {
+      expect(exitPosition.offset, _resultCode.indexOf(before));
+    } else if (after != null) {
+      expect(exitPosition.offset, _resultCode.indexOf(after) + after.length);
+    } else {
+      fail("One of 'before' or 'after' expected.");
+    }
+  }
+
+  /// Asserts that there is an assist of the given [kind] at [_offset] which
+  /// produces the [expected] code when applied to [testCode]. The map of
+  /// [additionallyChangedFiles] can be used to test assists that can modify
+  /// more than the test file. The keys are expected to be the paths to the
+  /// files that are modified (other than the test file) and the values are
+  /// pairs of source code: the states of the code before and after the edits
+  /// have been applied.
+  Future<void> assertHasAssist(String expected,
+      {Map<String, List<String>> additionallyChangedFiles}) async {
+    _setSelection();
+    Assist assist = await _assertHasAssist();
+    _change = assist.change;
+    expect(_change.id, kind.id);
+    // apply to "file"
+    List<SourceFileEdit> fileEdits = _change.edits;
+    if (additionallyChangedFiles == null) {
+      expect(fileEdits, hasLength(1));
+      _resultCode = SourceEdit.applySequence(testCode, _change.edits[0].edits);
+      expect(_resultCode, expected);
+    } else {
+      expect(fileEdits, hasLength(additionallyChangedFiles.length + 1));
+      _resultCode = SourceEdit.applySequence(
+          testCode, _change.getFileEdit(testFile).edits);
+      expect(_resultCode, expected);
+      for (String filePath in additionallyChangedFiles.keys) {
+        List<String> pair = additionallyChangedFiles[filePath];
+        String resultCode = SourceEdit.applySequence(
+            pair[0], _change.getFileEdit(filePath).edits);
+        expect(resultCode, pair[1]);
+      }
+    }
+  }
+
+  /// Asserts that there is an [Assist] of the given [kind] at the offset of the
+  /// given [snippet] which produces the [expected] code when applied to [testCode].
+  Future<void> assertHasAssistAt(String snippet, String expected,
+      {int length = 0}) async {
+    _offset = findOffset(snippet);
+    _length = length;
+    Assist assist = await _assertHasAssist();
+    _change = assist.change;
+    expect(_change.id, kind.id);
+    // apply to "file"
+    List<SourceFileEdit> fileEdits = _change.edits;
+    expect(fileEdits, hasLength(1));
+    _resultCode = SourceEdit.applySequence(testCode, _change.edits[0].edits);
+    expect(_resultCode, expected);
+  }
+
+  void assertLinkedGroup(int groupIndex, List<String> expectedStrings,
+      [List<LinkedEditSuggestion> expectedSuggestions]) {
+    LinkedEditGroup group = _change.linkedEditGroups[groupIndex];
+    List<Position> expectedPositions = _findResultPositions(expectedStrings);
+    expect(group.positions, unorderedEquals(expectedPositions));
+    if (expectedSuggestions != null) {
+      expect(group.suggestions, unorderedEquals(expectedSuggestions));
+    }
+  }
+
+  /// Asserts that there is no [Assist] of the given [kind] at [_offset].
+  Future<void> assertNoAssist() async {
+    _setSelection();
+    List<Assist> assists = await _computeAssists();
+    for (Assist assist in assists) {
+      if (assist.kind == kind) {
+        fail('Unexpected assist $kind in\n${assists.join('\n')}');
+      }
+    }
+  }
+
+  /// Asserts that there is no [Assist] of the given [kind] at the offset of the
+  /// given [snippet].
+  Future<void> assertNoAssistAt(String snippet, {int length = 0}) async {
+    _offset = findOffset(snippet);
+    _length = length;
+    List<Assist> assists = await _computeAssists();
+    for (Assist assist in assists) {
+      if (assist.kind == kind) {
+        fail('Unexpected assist $kind in\n${assists.join('\n')}');
+      }
+    }
+  }
+
+  List<LinkedEditSuggestion> expectedSuggestions(
+      LinkedEditSuggestionKind kind, List<String> values) {
+    return values.map((value) {
+      return new LinkedEditSuggestion(value, kind);
+    }).toList();
+  }
+
+  /// Computes assists and verifies that there is an assist of the given kind.
+  Future<Assist> _assertHasAssist() async {
+    List<Assist> assists = await _computeAssists();
+    for (Assist assist in assists) {
+      if (assist.kind == kind) {
+        return assist;
+      }
+    }
+    fail('Expected to find assist $kind in\n${assists.join('\n')}');
+  }
+
+  Future<List<Assist>> _computeAssists() async {
+    var context = new DartAssistContextImpl(
+      testAnalysisResult,
+      _offset,
+      _length,
+    );
+    var processor = new AssistProcessor(context);
+    return await processor.compute();
+  }
+
+  List<Position> _findResultPositions(List<String> searchStrings) {
+    List<Position> positions = <Position>[];
+    for (String search in searchStrings) {
+      int offset = _resultCode.indexOf(search);
+      positions.add(new Position(testFile, offset));
+    }
+    return positions;
+  }
+
+  void _setSelection() {
+    _offset = testCode.indexOf('/*caret*/');
+    if (_offset >= 0) {
+      _offset += '/*caret*/'.length;
+      _length = 0;
+    } else {
+      _offset = testCode.indexOf('// start\n');
+      if (_offset >= 0) {
+        _offset += '// start\n'.length;
+        _length = testCode.indexOf('// end') - _offset;
+      } else {
+        _offset = 0;
+        _length = 0;
+      }
+    }
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_class_to_mixin_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_class_to_mixin_test.dart
new file mode 100644
index 0000000..ce8a4d3
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_class_to_mixin_test.dart
@@ -0,0 +1,409 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertClassToMixinTest);
+  });
+}
+
+@reflectiveTest
+class ConvertClassToMixinTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_CLASS_TO_MIXIN;
+
+  test_abstract() async {
+    await resolveTestUnit('''
+abstract class A {}
+''');
+    await assertHasAssistAt('A', '''
+mixin A {}
+''');
+  }
+
+  test_extends_noSuper() async {
+    await resolveTestUnit('''
+class A {}
+class B extends A {}
+''');
+    await assertHasAssistAt('B', '''
+class A {}
+mixin B implements A {}
+''');
+  }
+
+  test_extends_super() async {
+    await resolveTestUnit('''
+class A {
+  a() {}
+}
+class B extends A {
+  b() {
+    super.a();
+  }
+}
+''');
+    await assertHasAssistAt('B', '''
+class A {
+  a() {}
+}
+mixin B on A {
+  b() {
+    super.a();
+  }
+}
+''');
+  }
+
+  test_extends_superSuper() async {
+    await resolveTestUnit('''
+class A {
+  a() {}
+}
+class B extends A {}
+class C extends B {
+  c() {
+    super.a();
+  }
+}
+''');
+    await assertHasAssistAt('C', '''
+class A {
+  a() {}
+}
+class B extends A {}
+mixin C on B {
+  c() {
+    super.a();
+  }
+}
+''');
+  }
+
+  test_extendsImplements_noSuper() async {
+    await resolveTestUnit('''
+class A {}
+class B {}
+class C extends A implements B {}
+''');
+    await assertHasAssistAt('C', '''
+class A {}
+class B {}
+mixin C implements A, B {}
+''');
+  }
+
+  test_extendsImplements_super_extends() async {
+    await resolveTestUnit('''
+class A {
+  a() {}
+}
+class B {}
+class C extends A implements B {
+  c() {
+    super.a();
+  }
+}
+''');
+    await assertHasAssistAt('C', '''
+class A {
+  a() {}
+}
+class B {}
+mixin C on A implements B {
+  c() {
+    super.a();
+  }
+}
+''');
+  }
+
+  test_extendsWith_noSuper() async {
+    await resolveTestUnit('''
+class A {}
+class B {}
+class C extends A with B {}
+''');
+    await assertHasAssistAt('C', '''
+class A {}
+class B {}
+mixin C implements A, B {}
+''');
+  }
+
+  test_extendsWith_super_both() async {
+    await resolveTestUnit('''
+class A {
+  a() {}
+}
+class B {
+  b() {}
+}
+class C extends A with B {
+  c() {
+    super.a();
+    super.b();
+  }
+}
+''');
+    await assertHasAssistAt('C', '''
+class A {
+  a() {}
+}
+class B {
+  b() {}
+}
+mixin C on A, B {
+  c() {
+    super.a();
+    super.b();
+  }
+}
+''');
+  }
+
+  test_extendsWith_super_extends() async {
+    await resolveTestUnit('''
+class A {
+  a() {}
+}
+class B {
+  b() {}
+}
+class C extends A with B {
+  c() {
+    super.a();
+  }
+}
+''');
+    await assertHasAssistAt('C', '''
+class A {
+  a() {}
+}
+class B {
+  b() {}
+}
+mixin C on A implements B {
+  c() {
+    super.a();
+  }
+}
+''');
+  }
+
+  test_extendsWith_super_with() async {
+    await resolveTestUnit('''
+class A {
+  a() {}
+}
+class B {
+  b() {}
+}
+class C extends A with B {
+  c() {
+    super.b();
+  }
+}
+''');
+    await assertHasAssistAt('C', '''
+class A {
+  a() {}
+}
+class B {
+  b() {}
+}
+mixin C on B implements A {
+  c() {
+    super.b();
+  }
+}
+''');
+  }
+
+  test_extendsWithImplements_noSuper() async {
+    await resolveTestUnit('''
+class A {}
+class B {}
+class C {}
+class D extends A with B implements C {}
+''');
+    await assertHasAssistAt('D', '''
+class A {}
+class B {}
+class C {}
+mixin D implements A, B, C {}
+''');
+  }
+
+  test_extendsWithImplements_super_both() async {
+    await resolveTestUnit('''
+class A {
+  a() {}
+}
+class B {
+  b() {}
+}
+class C {}
+class D extends A with B implements C {
+  d() {
+    super.a();
+    super.b();
+  }
+}
+''');
+    await assertHasAssistAt('D', '''
+class A {
+  a() {}
+}
+class B {
+  b() {}
+}
+class C {}
+mixin D on A, B implements C {
+  d() {
+    super.a();
+    super.b();
+  }
+}
+''');
+  }
+
+  test_extendsWithImplements_super_extends() async {
+    await resolveTestUnit('''
+class A {
+  a() {}
+}
+class B {
+  b() {}
+}
+class C {}
+class D extends A with B implements C {
+  d() {
+    super.a();
+  }
+}
+''');
+    await assertHasAssistAt('D', '''
+class A {
+  a() {}
+}
+class B {
+  b() {}
+}
+class C {}
+mixin D on A implements B, C {
+  d() {
+    super.a();
+  }
+}
+''');
+  }
+
+  test_extendsWithImplements_super_with() async {
+    await resolveTestUnit('''
+class A {
+  a() {}
+}
+class B {
+  b() {}
+}
+class C {}
+class D extends A with B implements C {
+  d() {
+    super.b();
+  }
+}
+''');
+    await assertHasAssistAt('D', '''
+class A {
+  a() {}
+}
+class B {
+  b() {}
+}
+class C {}
+mixin D on B implements A, C {
+  d() {
+    super.b();
+  }
+}
+''');
+  }
+
+  test_implements() async {
+    await resolveTestUnit('''
+class A {}
+class B implements A {}
+''');
+    await assertHasAssistAt('B', '''
+class A {}
+mixin B implements A {}
+''');
+  }
+
+  test_noClauses_invalidSelection() async {
+    await resolveTestUnit('''
+class A {}
+''');
+    await assertNoAssistAt('{}');
+  }
+
+  test_noClauses_selectKeyword() async {
+    await resolveTestUnit('''
+class A {}
+''');
+    await assertHasAssistAt('class', '''
+mixin A {}
+''');
+  }
+
+  test_noClauses_selectName() async {
+    await resolveTestUnit('''
+class A {}
+''');
+    await assertHasAssistAt('A', '''
+mixin A {}
+''');
+  }
+
+  test_with_noSuper() async {
+    await resolveTestUnit('''
+class A {}
+class B with A {}
+''');
+    await assertHasAssistAt('B', '''
+class A {}
+mixin B implements A {}
+''');
+  }
+
+  test_with_super() async {
+    await resolveTestUnit('''
+class A {
+  a() {}
+}
+class B with A {
+  b() {
+    super.a();
+  }
+}
+''');
+    await assertHasAssistAt('B', '''
+class A {
+  a() {}
+}
+mixin B on A {
+  b() {
+    super.a();
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_documentation_into_block_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_documentation_into_block_test.dart
new file mode 100644
index 0000000..895f645
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_documentation_into_block_test.dart
@@ -0,0 +1,96 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertDocumentationIntoBlockTest);
+  });
+}
+
+@reflectiveTest
+class ConvertDocumentationIntoBlockTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_DOCUMENTATION_INTO_BLOCK;
+
+  test_alreadyBlock() async {
+    await resolveTestUnit('''
+/**
+ * AAAAAAA
+ */
+class A {}
+''');
+    await assertNoAssistAt('AAA');
+  }
+
+  test_noSpaceBeforeText() async {
+    await resolveTestUnit('''
+class A {
+  /// AAAAA
+  ///BBBBB
+  ///
+  /// CCCCC
+  mmm() {}
+}
+''');
+    await assertHasAssistAt('AAAAA', '''
+class A {
+  /**
+   * AAAAA
+   *BBBBB
+   *
+   * CCCCC
+   */
+  mmm() {}
+}
+''');
+  }
+
+  test_notDocumentation() async {
+    await resolveTestUnit('''
+// AAAA
+class A {}
+''');
+    await assertNoAssistAt('AAA');
+  }
+
+  test_onReference() async {
+    await resolveTestUnit('''
+/// AAAAAAA [int] AAAAAAA
+class A {}
+''');
+    await assertHasAssistAt('nt]', '''
+/**
+ * AAAAAAA [int] AAAAAAA
+ */
+class A {}
+''');
+  }
+
+  test_onText() async {
+    await resolveTestUnit('''
+class A {
+  /// AAAAAAA [int] AAAAAAA
+  /// BBBBBBBB BBBB BBBB
+  /// CCC [A] CCCCCCCCCCC
+  mmm() {}
+}
+''');
+    await assertHasAssistAt('AAA [', '''
+class A {
+  /**
+   * AAAAAAA [int] AAAAAAA
+   * BBBBBBBB BBBB BBBB
+   * CCC [A] CCCCCCCCCCC
+   */
+  mmm() {}
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_documentation_into_line_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_documentation_into_line_test.dart
new file mode 100644
index 0000000..535bf55
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_documentation_into_line_test.dart
@@ -0,0 +1,112 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertDocumentationIntoLineTest);
+  });
+}
+
+@reflectiveTest
+class ConvertDocumentationIntoLineTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_DOCUMENTATION_INTO_LINE;
+
+  test_alreadyLine() async {
+    await resolveTestUnit('''
+/// AAAAAAA
+class A {}
+''');
+    await assertNoAssistAt('AAA');
+  }
+
+  test_hasEmptyLine() async {
+    await resolveTestUnit('''
+class A {
+  /**
+   * AAAAAAA [int] AAAAAAA
+   *
+   * BBBBBBBB BBBB BBBB
+   */
+  mmm() {}
+}
+''');
+    await assertHasAssistAt('AAA [', '''
+class A {
+  /// AAAAAAA [int] AAAAAAA
+  ///
+  /// BBBBBBBB BBBB BBBB
+  mmm() {}
+}
+''');
+  }
+
+  test_notDocumentation() async {
+    await resolveTestUnit('''
+/* AAAA */
+class A {}
+''');
+    await assertNoAssistAt('AAA');
+  }
+
+  test_onReference() async {
+    await resolveTestUnit('''
+/**
+ * AAAAAAA [int] AAAAAAA
+ */
+class A {}
+''');
+    await assertHasAssistAt('nt]', '''
+/// AAAAAAA [int] AAAAAAA
+class A {}
+''');
+  }
+
+  test_onText() async {
+    await resolveTestUnit('''
+class A {
+  /**
+   * AAAAAAA [int] AAAAAAA
+   * BBBBBBBB BBBB BBBB
+   * CCC [A] CCCCCCCCCCC
+   */
+  mmm() {}
+}
+''');
+    await assertHasAssistAt('AAA [', '''
+class A {
+  /// AAAAAAA [int] AAAAAAA
+  /// BBBBBBBB BBBB BBBB
+  /// CCC [A] CCCCCCCCCCC
+  mmm() {}
+}
+''');
+  }
+
+  test_onText_hasFirstLine() async {
+    await resolveTestUnit('''
+class A {
+  /** AAAAAAA [int] AAAAAAA
+   * BBBBBBBB BBBB BBBB
+   * CCC [A] CCCCCCCCCCC
+   */
+  mmm() {}
+}
+''');
+    await assertHasAssistAt('AAA [', '''
+class A {
+  /// AAAAAAA [int] AAAAAAA
+  /// BBBBBBBB BBBB BBBB
+  /// CCC [A] CCCCCCCCCCC
+  mmm() {}
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_into_async_body_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_into_async_body_test.dart
new file mode 100644
index 0000000..170a3c4
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_into_async_body_test.dart
@@ -0,0 +1,149 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertIntoAsyncBodyTest);
+  });
+}
+
+@reflectiveTest
+class ConvertIntoAsyncBodyTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_INTO_ASYNC_BODY;
+
+  test_async() async {
+    await resolveTestUnit('''
+import 'dart:async';
+Future<String> f() async => '';
+''');
+    await assertNoAssistAt('=>');
+  }
+
+  test_asyncStar() async {
+    await resolveTestUnit('''
+import 'dart:async';
+Stream<String> f() async* {}
+''');
+    await assertNoAssistAt('{}');
+  }
+
+  test_closure() async {
+    await resolveTestUnit('''
+main() {
+  f(() => 123);
+}
+f(g) {}
+''');
+    await assertHasAssistAt('=>', '''
+main() {
+  f(() async => 123);
+}
+f(g) {}
+''');
+  }
+
+  test_constructor() async {
+    await resolveTestUnit('''
+class C {
+  C() {}
+}
+''');
+    await assertNoAssistAt('{}');
+  }
+
+  test_function() async {
+    await resolveTestUnit('''
+String f() => '';
+''');
+    await assertHasAssistAt('=>', '''
+Future<String> f() async => '';
+''');
+  }
+
+  test_getter_expression_noSpace() async {
+    await resolveTestUnit('''
+class C {
+  int get g=>0;
+}
+''');
+    await assertHasAssistAt('get g', '''
+class C {
+  Future<int> get g async =>0;
+}
+''');
+  }
+
+  test_inBody_block() async {
+    await resolveTestUnit('''
+class C {
+  void foo() {
+    print(42);
+  }
+}
+''');
+    await assertNoAssistAt('print');
+  }
+
+  test_inBody_expression() async {
+    await resolveTestUnit('''
+class C {
+  void foo() => print(42);
+}
+''');
+    await assertNoAssistAt('print');
+  }
+
+  test_method() async {
+    await resolveTestUnit('''
+class C {
+  int m() { return 0; }
+}
+''');
+    await assertHasAssistAt('{ return', '''
+class C {
+  Future<int> m() async { return 0; }
+}
+''');
+  }
+
+  test_method_abstract() async {
+    await resolveTestUnit('''
+abstract class C {
+  int m();
+}
+''');
+    await assertHasAssistAt('m()', '''
+abstract class C {
+  Future<int> m();
+}
+''');
+  }
+
+  test_method_noReturnType() async {
+    await resolveTestUnit('''
+class C {
+  m() { return 0; }
+}
+''');
+    await assertHasAssistAt('{ return', '''
+class C {
+  m() async { return 0; }
+}
+''');
+  }
+
+  test_syncStar() async {
+    await resolveTestUnit('''
+Iterable<String> f() sync* {}
+''');
+    await assertNoAssistAt('{}');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_into_block_body_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_into_block_body_test.dart
new file mode 100644
index 0000000..4d3fa9c
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_into_block_body_test.dart
@@ -0,0 +1,162 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertIntoBlockBodyTest);
+  });
+}
+
+@reflectiveTest
+class ConvertIntoBlockBodyTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_INTO_BLOCK_BODY;
+
+  test_async() async {
+    await resolveTestUnit('''
+class A {
+  mmm() async => 123;
+}
+''');
+    await assertHasAssistAt('mmm()', '''
+class A {
+  mmm() async {
+    return 123;
+  }
+}
+''');
+  }
+
+  test_closure() async {
+    await resolveTestUnit('''
+setup(x) {}
+main() {
+  setup(() => 42);
+}
+''');
+    await assertHasAssistAt('() => 42', '''
+setup(x) {}
+main() {
+  setup(() {
+    return 42;
+  });
+}
+''');
+    assertExitPosition(after: '42;');
+  }
+
+  test_closure_voidExpression() async {
+    await resolveTestUnit('''
+setup(x) {}
+main() {
+  setup(() => print('done'));
+}
+''');
+    await assertHasAssistAt('() => print', '''
+setup(x) {}
+main() {
+  setup(() {
+    print('done');
+  });
+}
+''');
+    assertExitPosition(after: "');");
+  }
+
+  test_constructor() async {
+    await resolveTestUnit('''
+class A {
+  factory A() => null;
+}
+''');
+    await assertHasAssistAt('A()', '''
+class A {
+  factory A() {
+    return null;
+  }
+}
+''');
+  }
+
+  test_inExpression() async {
+    await resolveTestUnit('''
+main() => 123;
+''');
+    await assertNoAssistAt('123;');
+  }
+
+  test_method() async {
+    await resolveTestUnit('''
+class A {
+  mmm() => 123;
+}
+''');
+    await assertHasAssistAt('mmm()', '''
+class A {
+  mmm() {
+    return 123;
+  }
+}
+''');
+  }
+
+  test_noEnclosingFunction() async {
+    await resolveTestUnit('''
+var v = 123;
+''');
+    await assertNoAssistAt('v =');
+  }
+
+  test_notExpressionBlock() async {
+    await resolveTestUnit('''
+fff() {
+  return 123;
+}
+''');
+    await assertNoAssistAt('fff() {');
+  }
+
+  test_onArrow() async {
+    await resolveTestUnit('''
+fff() => 123;
+''');
+    await assertHasAssistAt('=>', '''
+fff() {
+  return 123;
+}
+''');
+  }
+
+  test_onName() async {
+    await resolveTestUnit('''
+fff() => 123;
+''');
+    await assertHasAssistAt('fff()', '''
+fff() {
+  return 123;
+}
+''');
+  }
+
+  test_throw() async {
+    await resolveTestUnit('''
+class A {
+  mmm() => throw 'error';
+}
+''');
+    await assertHasAssistAt('mmm()', '''
+class A {
+  mmm() {
+    throw 'error';
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_into_expression_body_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_into_expression_body_test.dart
new file mode 100644
index 0000000..cb7e2e2
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_into_expression_body_test.dart
@@ -0,0 +1,184 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertIntoExpressionBodyTest);
+  });
+}
+
+@reflectiveTest
+class ConvertIntoExpressionBodyTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_INTO_EXPRESSION_BODY;
+
+  test_already() async {
+    await resolveTestUnit('''
+fff() => 42;
+''');
+    await assertNoAssistAt('fff()');
+  }
+
+  test_async() async {
+    await resolveTestUnit('''
+class A {
+  mmm() async {
+    return 42;
+  }
+}
+''');
+    await assertHasAssistAt('mmm', '''
+class A {
+  mmm() async => 42;
+}
+''');
+  }
+
+  test_closure() async {
+    await resolveTestUnit('''
+setup(x) {}
+main() {
+  setup(() {
+    return 42;
+  });
+}
+''');
+    await assertHasAssistAt('return', '''
+setup(x) {}
+main() {
+  setup(() => 42);
+}
+''');
+  }
+
+  test_closure_voidExpression() async {
+    await resolveTestUnit('''
+setup(x) {}
+main() {
+  setup((_) {
+    print('test');
+  });
+}
+''');
+    await assertHasAssistAt('(_) {', '''
+setup(x) {}
+main() {
+  setup((_) => print('test'));
+}
+''');
+  }
+
+  test_constructor() async {
+    await resolveTestUnit('''
+class A {
+  factory A() {
+    return null;
+  }
+}
+''');
+    await assertHasAssistAt('A()', '''
+class A {
+  factory A() => null;
+}
+''');
+  }
+
+  test_function_onBlock() async {
+    await resolveTestUnit('''
+fff() {
+  return 42;
+}
+''');
+    await assertHasAssistAt('{', '''
+fff() => 42;
+''');
+  }
+
+  test_function_onName() async {
+    await resolveTestUnit('''
+fff() {
+  return 42;
+}
+''');
+    await assertHasAssistAt('ff()', '''
+fff() => 42;
+''');
+  }
+
+  test_inExpression() async {
+    await resolveTestUnit('''
+main() {
+  return 42;
+}
+''');
+    await assertNoAssistAt('42;');
+  }
+
+  test_method_onBlock() async {
+    await resolveTestUnit('''
+class A {
+  m() { // marker
+    return 42;
+  }
+}
+''');
+    await assertHasAssistAt('{ // marker', '''
+class A {
+  m() => 42;
+}
+''');
+  }
+
+  test_moreThanOneStatement() async {
+    await resolveTestUnit('''
+fff() {
+  var v = 42;
+  return v;
+}
+''');
+    await assertNoAssistAt('fff()');
+  }
+
+  test_noEnclosingFunction() async {
+    await resolveTestUnit('''
+var V = 42;
+''');
+    await assertNoAssistAt('V = ');
+  }
+
+  test_noReturn() async {
+    await resolveTestUnit('''
+fff() {
+  var v = 42;
+}
+''');
+    await assertNoAssistAt('fff()');
+  }
+
+  test_noReturnValue() async {
+    await resolveTestUnit('''
+fff() {
+  return;
+}
+''');
+    await assertNoAssistAt('fff()');
+  }
+
+  test_topFunction_onReturnStatement() async {
+    await resolveTestUnit('''
+fff() {
+  return 42;
+}
+''');
+    await assertHasAssistAt('return', '''
+fff() => 42;
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_into_final_field_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_into_final_field_test.dart
new file mode 100644
index 0000000..4fa51fa
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_into_final_field_test.dart
@@ -0,0 +1,194 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertIntoFinalFieldTest);
+  });
+}
+
+@reflectiveTest
+class ConvertIntoFinalFieldTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_INTO_FINAL_FIELD;
+
+  test_blockBody_onlyReturnStatement() async {
+    await resolveTestUnit('''
+class A {
+  int get foo {
+    return 1 + 2;
+  }
+}
+''');
+    await assertHasAssistAt('get foo', '''
+class A {
+  final int foo = 1 + 2;
+}
+''');
+  }
+
+  test_hasOverride() async {
+    await resolveTestUnit('''
+const myAnnotation = const Object();
+class A {
+  @myAnnotation
+  int get foo => 42;
+}
+''');
+    await assertHasAssistAt('get foo', '''
+const myAnnotation = const Object();
+class A {
+  @myAnnotation
+  final int foo = 42;
+}
+''');
+  }
+
+  test_hasSetter_inSuper() async {
+    await resolveTestUnit('''
+class A {
+  void set foo(_) {}
+}
+class B extends A {
+  int get foo => null;
+}
+''');
+    await assertHasAssistAt('get foo', '''
+class A {
+  void set foo(_) {}
+}
+class B extends A {
+  final int foo;
+}
+''');
+  }
+
+  test_hasSetter_inThisClass() async {
+    await resolveTestUnit('''
+class A {
+  int get foo => null;
+  void set foo(_) {}
+}
+''');
+    await assertNoAssistAt('get foo');
+  }
+
+  test_noReturnType() async {
+    await resolveTestUnit('''
+class A {
+  get foo => 42;
+}
+''');
+    await assertHasAssistAt('get foo', '''
+class A {
+  final foo = 42;
+}
+''');
+  }
+
+  test_noReturnType_static() async {
+    await resolveTestUnit('''
+class A {
+  static get foo => 42;
+}
+''');
+    await assertHasAssistAt('get foo', '''
+class A {
+  static final foo = 42;
+}
+''');
+  }
+
+  test_notExpressionBody() async {
+    await resolveTestUnit('''
+class A {
+  int get foo {
+    int v = 1 + 2;
+    return v + 3;
+  }
+}
+''');
+    await assertNoAssistAt('get foo');
+  }
+
+  test_notGetter() async {
+    await resolveTestUnit('''
+class A {
+  int foo() => 42;
+}
+''');
+    await assertNoAssistAt('foo');
+  }
+
+  test_notNull() async {
+    await resolveTestUnit('''
+class A {
+  int get foo => 1 + 2;
+}
+''');
+    await assertHasAssistAt('get foo', '''
+class A {
+  final int foo = 1 + 2;
+}
+''');
+  }
+
+  test_null() async {
+    await resolveTestUnit('''
+class A {
+  int get foo => null;
+}
+''');
+    await assertHasAssistAt('get foo', '''
+class A {
+  final int foo;
+}
+''');
+  }
+
+  test_onName() async {
+    await resolveTestUnit('''
+class A {
+  int get foo => 42;
+}
+''');
+    await assertHasAssistAt('foo', '''
+class A {
+  final int foo = 42;
+}
+''');
+  }
+
+  test_onReturnType_parameterized() async {
+    await resolveTestUnit('''
+class A {
+  List<int> get foo => null;
+}
+''');
+    await assertHasAssistAt('nt> get', '''
+class A {
+  final List<int> foo;
+}
+''');
+  }
+
+  test_onReturnType_simple() async {
+    await resolveTestUnit('''
+class A {
+  int get foo => 42;
+}
+''');
+    await assertHasAssistAt('int get', '''
+class A {
+  final int foo = 42;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_into_for_index_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_into_for_index_test.dart
new file mode 100644
index 0000000..5816d3a
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_into_for_index_test.dart
@@ -0,0 +1,168 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertIntoForIndexTest);
+  });
+}
+
+@reflectiveTest
+class ConvertIntoForIndexTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_INTO_FOR_INDEX;
+
+  test_bodyNotBlock() async {
+    await resolveTestUnit('''
+main(List<String> items) {
+  for (String item in items) print(item);
+}
+''');
+    await assertNoAssistAt('for (String');
+  }
+
+  test_doesNotDeclareVariable() async {
+    await resolveTestUnit('''
+main(List<String> items) {
+  String item;
+  for (item in items) {
+    print(item);
+  }
+}
+''');
+    await assertNoAssistAt('for (item');
+  }
+
+  test_iterableIsNotVariable() async {
+    await resolveTestUnit('''
+main() {
+  for (String item in ['a', 'b', 'c']) {
+    print(item);
+  }
+}
+''');
+    await assertNoAssistAt('for (String');
+  }
+
+  test_iterableNotList() async {
+    await resolveTestUnit('''
+main(Iterable<String> items) {
+  for (String item in items) {
+    print(item);
+  }
+}
+''');
+    await assertNoAssistAt('for (String');
+  }
+
+  test_onDeclaredIdentifier_name() async {
+    await resolveTestUnit('''
+main(List<String> items) {
+  for (String item in items) {
+    print(item);
+  }
+}
+''');
+    await assertHasAssistAt('item in', '''
+main(List<String> items) {
+  for (int i = 0; i < items.length; i++) {
+    String item = items[i];
+    print(item);
+  }
+}
+''');
+  }
+
+  test_onDeclaredIdentifier_type() async {
+    await resolveTestUnit('''
+main(List<String> items) {
+  for (String item in items) {
+    print(item);
+  }
+}
+''');
+    await assertHasAssistAt('tring item', '''
+main(List<String> items) {
+  for (int i = 0; i < items.length; i++) {
+    String item = items[i];
+    print(item);
+  }
+}
+''');
+  }
+
+  test_onFor() async {
+    await resolveTestUnit('''
+main(List<String> items) {
+  for (String item in items) {
+    print(item);
+  }
+}
+''');
+    await assertHasAssistAt('for (String', '''
+main(List<String> items) {
+  for (int i = 0; i < items.length; i++) {
+    String item = items[i];
+    print(item);
+  }
+}
+''');
+  }
+
+  test_usesI() async {
+    await resolveTestUnit('''
+main(List<String> items) {
+  for (String item in items) {
+    int i = 0;
+  }
+}
+''');
+    await assertHasAssistAt('for (String', '''
+main(List<String> items) {
+  for (int j = 0; j < items.length; j++) {
+    String item = items[j];
+    int i = 0;
+  }
+}
+''');
+  }
+
+  test_usesIJ() async {
+    await resolveTestUnit('''
+main(List<String> items) {
+  for (String item in items) {
+    print(item);
+    int i = 0, j = 1;
+  }
+}
+''');
+    await assertHasAssistAt('for (String', '''
+main(List<String> items) {
+  for (int k = 0; k < items.length; k++) {
+    String item = items[k];
+    print(item);
+    int i = 0, j = 1;
+  }
+}
+''');
+  }
+
+  test_usesIJK() async {
+    await resolveTestUnit('''
+main(List<String> items) {
+  for (String item in items) {
+    print(item);
+    int i, j, k;
+  }
+}
+''');
+    await assertNoAssistAt('for (String');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_into_generic_function_syntax_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_into_generic_function_syntax_test.dart
new file mode 100644
index 0000000..e9b034e
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_into_generic_function_syntax_test.dart
@@ -0,0 +1,103 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertIntoGenericFunctionSyntaxTest);
+  });
+}
+
+@reflectiveTest
+class ConvertIntoGenericFunctionSyntaxTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_INTO_GENERIC_FUNCTION_SYNTAX;
+
+  test_functionTypeAlias_insideParameterList() async {
+    await resolveTestUnit('''
+typedef String F(int x, int y);
+''');
+    await assertNoAssistAt('x,');
+  }
+
+  test_functionTypeAlias_noParameterTypes() async {
+    await resolveTestUnit('''
+typedef String F(x);
+''');
+    await assertNoAssistAt('def');
+  }
+
+  test_functionTypeAlias_noReturnType_noTypeParameters() async {
+    await resolveTestUnit('''
+typedef String F(int x);
+''');
+    await assertHasAssistAt('def', '''
+typedef F = String Function(int x);
+''');
+  }
+
+  test_functionTypeAlias_noReturnType_typeParameters() async {
+    await resolveTestUnit('''
+typedef F<P, R>(P x);
+''');
+    await assertHasAssistAt('def', '''
+typedef F<P, R> = Function(P x);
+''');
+  }
+
+  test_functionTypeAlias_returnType_noTypeParameters() async {
+    await resolveTestUnit('''
+typedef String F(int x);
+''');
+    await assertHasAssistAt('def', '''
+typedef F = String Function(int x);
+''');
+  }
+
+  test_functionTypeAlias_returnType_typeParameters() async {
+    await resolveTestUnit('''
+typedef R F<P, R>(P x);
+''');
+    await assertHasAssistAt('def', '''
+typedef F<P, R> = R Function(P x);
+''');
+  }
+
+  test_functionTypedParameter_insideParameterList() async {
+    await resolveTestUnit('''
+g(String f(int x, int y)) {}
+''');
+    await assertNoAssistAt('x,');
+  }
+
+  test_functionTypedParameter_noParameterTypes() async {
+    await resolveTestUnit('''
+g(String f(x)) {}
+''');
+    await assertNoAssistAt('f(');
+  }
+
+  test_functionTypedParameter_noReturnType_noTypeParameters() async {
+    await resolveTestUnit('''
+g(f(int x)) {}
+''');
+    await assertHasAssistAt('f(', '''
+g(Function(int x) f) {}
+''');
+  }
+
+  test_functionTypedParameter_returnType() async {
+    await resolveTestUnit('''
+g(String f(int x)) {}
+''');
+    await assertHasAssistAt('f(', '''
+g(String Function(int x) f) {}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_into_getter_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_into_getter_test.dart
new file mode 100644
index 0000000..f3348c2
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_into_getter_test.dart
@@ -0,0 +1,79 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertIntoGetterTest);
+  });
+}
+
+@reflectiveTest
+class ConvertIntoGetterTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_INTO_GETTER;
+
+  test_noInitializer() async {
+    verifyNoTestUnitErrors = false;
+    await resolveTestUnit('''
+class A {
+  final int foo;
+}
+''');
+    await assertNoAssistAt('foo');
+  }
+
+  test_notFinal() async {
+    await resolveTestUnit('''
+class A {
+  int foo = 1;
+}
+''');
+    await assertNoAssistAt('foo');
+  }
+
+  test_notSingleField() async {
+    await resolveTestUnit('''
+class A {
+  final int foo = 1, bar = 2;
+}
+''');
+    await assertNoAssistAt('foo');
+  }
+
+  test_noType() async {
+    await resolveTestUnit('''
+class A {
+  final foo = 42;
+}
+''');
+    await assertHasAssistAt('foo =', '''
+class A {
+  get foo => 42;
+}
+''');
+  }
+
+  test_type() async {
+    await resolveTestUnit('''
+const myAnnotation = const Object();
+class A {
+  @myAnnotation
+  final int foo = 1 + 2;
+}
+''');
+    await assertHasAssistAt('foo =', '''
+const myAnnotation = const Object();
+class A {
+  @myAnnotation
+  int get foo => 1 + 2;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_into_is_not_empty_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_into_is_not_empty_test.dart
new file mode 100644
index 0000000..cd522a7
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_into_is_not_empty_test.dart
@@ -0,0 +1,100 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertIntoIsNotEmptyTest);
+  });
+}
+
+@reflectiveTest
+class ConvertIntoIsNotEmptyTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_INTO_IS_NOT_EMPTY;
+
+  test_noBang() async {
+    verifyNoTestUnitErrors = false;
+    await resolveTestUnit('''
+main(String str) {
+  ~str.isEmpty;
+}
+''');
+    await assertNoAssistAt('isEmpty;');
+  }
+
+  test_noIsNotEmpty() async {
+    await resolveTestUnit('''
+class A {
+  bool get isEmpty => false;
+}
+main(A a) {
+  !a.isEmpty;
+}
+''');
+    await assertNoAssistAt('isEmpty;');
+  }
+
+  test_notInPrefixExpression() async {
+    await resolveTestUnit('''
+main(String str) {
+  str.isEmpty;
+}
+''');
+    await assertNoAssistAt('isEmpty;');
+  }
+
+  test_notIsEmpty() async {
+    await resolveTestUnit('''
+main(int p) {
+  !p.isEven;
+}
+''');
+    await assertNoAssistAt('isEven;');
+  }
+
+  test_on_isEmpty() async {
+    await resolveTestUnit('''
+main(String str) {
+  !str.isEmpty;
+}
+''');
+    await assertHasAssistAt('isEmpty', '''
+main(String str) {
+  str.isNotEmpty;
+}
+''');
+  }
+
+  test_on_str() async {
+    await resolveTestUnit('''
+main(String str) {
+  !str.isEmpty;
+}
+''');
+    await assertHasAssistAt('str.', '''
+main(String str) {
+  str.isNotEmpty;
+}
+''');
+  }
+
+  test_propertyAccess() async {
+    await resolveTestUnit('''
+main(String str) {
+  !'text'.isEmpty;
+}
+''');
+    await assertHasAssistAt('isEmpty', '''
+main(String str) {
+  'text'.isNotEmpty;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_into_is_not_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_into_is_not_test.dart
new file mode 100644
index 0000000..f7e1ae1
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_into_is_not_test.dart
@@ -0,0 +1,195 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertIntoIsNotTest);
+  });
+}
+
+@reflectiveTest
+class ConvertIntoIsNotTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_INTO_IS_NOT;
+
+  test_childOfIs_left() async {
+    await resolveTestUnit('''
+main(p) {
+  !(p is String);
+}
+''');
+    await assertHasAssistAt('p is', '''
+main(p) {
+  p is! String;
+}
+''');
+  }
+
+  test_childOfIs_right() async {
+    await resolveTestUnit('''
+main(p) {
+  !(p is String);
+}
+''');
+    await assertHasAssistAt('String)', '''
+main(p) {
+  p is! String;
+}
+''');
+  }
+
+  test_is() async {
+    await resolveTestUnit('''
+main(p) {
+  !(p is String);
+}
+''');
+    await assertHasAssistAt('is String', '''
+main(p) {
+  p is! String;
+}
+''');
+  }
+
+  test_is_alreadyIsNot() async {
+    await resolveTestUnit('''
+main(p) {
+  p is! String;
+}
+''');
+    await assertNoAssistAt('is!');
+  }
+
+  test_is_higherPrecedencePrefix() async {
+    await resolveTestUnit('''
+main(p) {
+  !!(p is String);
+}
+''');
+    await assertHasAssistAt('is String', '''
+main(p) {
+  !(p is! String);
+}
+''');
+  }
+
+  test_is_noEnclosingParenthesis() async {
+    await resolveTestUnit('''
+main(p) {
+  p is String;
+}
+''');
+    await assertNoAssistAt('is String');
+  }
+
+  test_is_noPrefix() async {
+    await resolveTestUnit('''
+main(p) {
+  (p is String);
+}
+''');
+    await assertNoAssistAt('is String');
+  }
+
+  test_is_not_higherPrecedencePrefix() async {
+    await resolveTestUnit('''
+main(p) {
+  !!(p is String);
+}
+''');
+    await assertHasAssistAt('!(p', '''
+main(p) {
+  !(p is! String);
+}
+''');
+  }
+
+  test_is_notIsExpression() async {
+    await resolveTestUnit('''
+main(p) {
+  123 + 456;
+}
+''');
+    await assertNoAssistAt('123 +');
+  }
+
+  test_is_notTheNotOperator() async {
+    verifyNoTestUnitErrors = false;
+    await resolveTestUnit('''
+main(p) {
+  ++(p is String);
+}
+''');
+    await assertNoAssistAt('is String');
+  }
+
+  test_not() async {
+    await resolveTestUnit('''
+main(p) {
+  !(p is String);
+}
+''');
+    await assertHasAssistAt('!(p', '''
+main(p) {
+  p is! String;
+}
+''');
+  }
+
+  test_not_alreadyIsNot() async {
+    await resolveTestUnit('''
+main(p) {
+  !(p is! String);
+}
+''');
+    await assertNoAssistAt('!(p');
+  }
+
+  test_not_noEnclosingParenthesis() async {
+    await resolveTestUnit('''
+main(p) {
+  !p;
+}
+''');
+    await assertNoAssistAt('!p');
+  }
+
+  test_not_notIsExpression() async {
+    await resolveTestUnit('''
+main(p) {
+  !(p == null);
+}
+''');
+    await assertNoAssistAt('!(p');
+  }
+
+  test_not_notTheNotOperator() async {
+    verifyNoTestUnitErrors = false;
+    await resolveTestUnit('''
+main(p) {
+  ++(p is String);
+}
+''');
+    await assertNoAssistAt('++(');
+  }
+
+  test_parentheses() async {
+    await resolveTestUnit('''
+main(p) {
+  !(p is String);
+}
+''');
+    await assertHasAssistAt('(p is', '''
+main(p) {
+  p is! String;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_part_of_to_uri_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_part_of_to_uri_test.dart
new file mode 100644
index 0000000..381e803
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_part_of_to_uri_test.dart
@@ -0,0 +1,49 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertPartOfToUriTest);
+  });
+}
+
+@reflectiveTest
+class ConvertPartOfToUriTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_PART_OF_TO_URI;
+
+  test_nonSibling() async {
+    addSource('/pkg/lib/foo.dart', '''
+library foo;
+part 'src/bar.dart';
+''');
+    testFile = convertPath('/pkg/lib/src/bar.dart');
+    await resolveTestUnit('''
+part of foo;
+''');
+    await assertHasAssistAt('foo', '''
+part of '../foo.dart';
+''');
+  }
+
+  test_sibling() async {
+    addSource('/pkg/foo.dart', '''
+library foo;
+part 'bar.dart';
+''');
+    testFile = convertPath('/pkg/bar.dart');
+    await resolveTestUnit('''
+part of foo;
+''');
+    await assertHasAssistAt('foo', '''
+part of 'foo.dart';
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_to_double_quoted_string_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_to_double_quoted_string_test.dart
new file mode 100644
index 0000000..5711b07
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_to_double_quoted_string_test.dart
@@ -0,0 +1,143 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertToDoubleQuotedStringTest);
+  });
+}
+
+@reflectiveTest
+class ConvertToDoubleQuotedStringTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_TO_DOUBLE_QUOTED_STRING;
+
+  test_one_embeddedTarget() async {
+    await resolveTestUnit('''
+main() {
+  print('a"b"c');
+}
+''');
+    await assertNoAssistAt("'a");
+  }
+
+  test_one_enclosingTarget() async {
+    await resolveTestUnit('''
+main() {
+  print("abc");
+}
+''');
+    await assertNoAssistAt('"ab');
+  }
+
+  test_one_interpolation() async {
+    await resolveTestUnit(r'''
+main() {
+  var b = 'b';
+  var c = 'c';
+  print('a $b-${c} d');
+}
+''');
+    await assertHasAssistAt(r"'a $b", r'''
+main() {
+  var b = 'b';
+  var c = 'c';
+  print("a $b-${c} d");
+}
+''');
+  }
+
+  test_one_raw() async {
+    await resolveTestUnit('''
+main() {
+  print(r'abc');
+}
+''');
+    await assertHasAssistAt("'ab", '''
+main() {
+  print(r"abc");
+}
+''');
+  }
+
+  test_one_simple() async {
+    await resolveTestUnit('''
+main() {
+  print('abc');
+}
+''');
+    await assertHasAssistAt("'ab", '''
+main() {
+  print("abc");
+}
+''');
+  }
+
+  test_three_embeddedTarget() async {
+    await resolveTestUnit("""
+main() {
+  print('''a""\"c''');
+}
+""");
+    await assertNoAssistAt("'a");
+  }
+
+  test_three_enclosingTarget() async {
+    await resolveTestUnit('''
+main() {
+  print("""abc""");
+}
+''');
+    await assertNoAssistAt('"ab');
+  }
+
+  test_three_interpolation() async {
+    await resolveTestUnit(r"""
+main() {
+  var b = 'b';
+  var c = 'c';
+  print('''a $b-${c} d''');
+}
+""");
+    await assertHasAssistAt(r"'a $b", r'''
+main() {
+  var b = 'b';
+  var c = 'c';
+  print("""a $b-${c} d""");
+}
+''');
+  }
+
+  test_three_raw() async {
+    await resolveTestUnit("""
+main() {
+  print(r'''abc''');
+}
+""");
+    await assertHasAssistAt("'ab", '''
+main() {
+  print(r"""abc""");
+}
+''');
+  }
+
+  test_three_simple() async {
+    await resolveTestUnit("""
+main() {
+  print('''abc''');
+}
+""");
+    await assertHasAssistAt("'ab", '''
+main() {
+  print("""abc""");
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_to_field_parameter_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_to_field_parameter_test.dart
new file mode 100644
index 0000000..2cf9958
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_to_field_parameter_test.dart
@@ -0,0 +1,110 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertToFieldParameterTest);
+  });
+}
+
+@reflectiveTest
+class ConvertToFieldParameterTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_TO_FIELD_PARAMETER;
+
+  test_additionalUse() async {
+    await resolveTestUnit('''
+class A {
+  int aaa2;
+  int bbb2;
+  A(int aaa) : aaa2 = aaa, bbb2 = aaa;
+}
+''');
+    await assertNoAssistAt('aaa)');
+  }
+
+  test_firstInitializer() async {
+    await resolveTestUnit('''
+class A {
+  int aaa2;
+  int bbb2;
+  A(int aaa, int bbb) : aaa2 = aaa, bbb2 = bbb;
+}
+''');
+    await assertHasAssistAt('aaa, ', '''
+class A {
+  int aaa2;
+  int bbb2;
+  A(this.aaa2, int bbb) : bbb2 = bbb;
+}
+''');
+  }
+
+  test_notPureAssignment() async {
+    await resolveTestUnit('''
+class A {
+  int aaa2;
+  A(int aaa) : aaa2 = aaa * 2;
+}
+''');
+    await assertNoAssistAt('aaa)');
+  }
+
+  test_onParameterName_inInitializer() async {
+    await resolveTestUnit('''
+class A {
+  int test2;
+  A(int test) : test2 = test {
+  }
+}
+''');
+    await assertHasAssistAt('test {', '''
+class A {
+  int test2;
+  A(this.test2) {
+  }
+}
+''');
+  }
+
+  test_onParameterName_inParameters() async {
+    await resolveTestUnit('''
+class A {
+  int test;
+  A(int test) : test = test {
+  }
+}
+''');
+    await assertHasAssistAt('test)', '''
+class A {
+  int test;
+  A(this.test) {
+  }
+}
+''');
+  }
+
+  test_secondInitializer() async {
+    await resolveTestUnit('''
+class A {
+  int aaa2;
+  int bbb2;
+  A(int aaa, int bbb) : aaa2 = aaa, bbb2 = bbb;
+}
+''');
+    await assertHasAssistAt('bbb)', '''
+class A {
+  int aaa2;
+  int bbb2;
+  A(int aaa, this.bbb2) : aaa2 = aaa;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_to_int_literal_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_to_int_literal_test.dart
new file mode 100644
index 0000000..d76730c
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_to_int_literal_test.dart
@@ -0,0 +1,53 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertToIntLiteralTest);
+  });
+}
+
+@reflectiveTest
+class ConvertToIntLiteralTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_TO_INT_LITERAL;
+
+  test_decimal() async {
+    await resolveTestUnit('''
+const double myDouble = /*caret*/42.0;
+''');
+    await assertHasAssist('''
+const double myDouble = /*caret*/42;
+''');
+  }
+
+  test_notDouble() async {
+    await resolveTestUnit('''
+const double myDouble = /*caret*/42;
+''');
+    await assertNoAssist();
+  }
+
+  test_scientific() async {
+    await resolveTestUnit('''
+const double myDouble = /*caret*/4.2e1;
+''');
+    await assertHasAssist('''
+const double myDouble = /*caret*/42;
+''');
+  }
+
+  test_tooBig() async {
+    await resolveTestUnit('''
+const double myDouble = /*caret*/4.2e99999;
+''');
+    await assertNoAssist();
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_to_normal_parameter_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_to_normal_parameter_test.dart
new file mode 100644
index 0000000..f5ddc23
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_to_normal_parameter_test.dart
@@ -0,0 +1,72 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertToNormalParameterTest);
+  });
+}
+
+@reflectiveTest
+class ConvertToNormalParameterTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_TO_NORMAL_PARAMETER;
+
+  test_dynamic() async {
+    await resolveTestUnit('''
+class A {
+  var test;
+  A(this.test) {
+  }
+}
+''');
+    await assertHasAssistAt('test)', '''
+class A {
+  var test;
+  A(test) : test = test {
+  }
+}
+''');
+  }
+
+  test_firstInitializer() async {
+    await resolveTestUnit('''
+class A {
+  int test;
+  A(this.test) {
+  }
+}
+''');
+    await assertHasAssistAt('test)', '''
+class A {
+  int test;
+  A(int test) : test = test {
+  }
+}
+''');
+  }
+
+  test_secondInitializer() async {
+    await resolveTestUnit('''
+class A {
+  double aaa;
+  int bbb;
+  A(this.bbb) : aaa = 1.0;
+}
+''');
+    await assertHasAssistAt('bbb)', '''
+class A {
+  double aaa;
+  int bbb;
+  A(int bbb) : aaa = 1.0, bbb = bbb;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/convert_to_single_quoted_string_test.dart b/pkg/analysis_server/test/src/services/correction/assist/convert_to_single_quoted_string_test.dart
new file mode 100644
index 0000000..161f62c
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/convert_to_single_quoted_string_test.dart
@@ -0,0 +1,143 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertToSingleQuotedStringTest);
+  });
+}
+
+@reflectiveTest
+class ConvertToSingleQuotedStringTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.CONVERT_TO_SINGLE_QUOTED_STRING;
+
+  test_one_embeddedTarget() async {
+    await resolveTestUnit('''
+main() {
+  print("a'b'c");
+}
+''');
+    await assertNoAssistAt('"a');
+  }
+
+  test_one_enclosingTarget() async {
+    await resolveTestUnit('''
+main() {
+  print('abc');
+}
+''');
+    await assertNoAssistAt("'ab");
+  }
+
+  test_one_interpolation() async {
+    await resolveTestUnit(r'''
+main() {
+  var b = 'b';
+  var c = 'c';
+  print("a $b-${c} d");
+}
+''');
+    await assertHasAssistAt(r'"a $b', r'''
+main() {
+  var b = 'b';
+  var c = 'c';
+  print('a $b-${c} d');
+}
+''');
+  }
+
+  test_one_raw() async {
+    await resolveTestUnit('''
+main() {
+  print(r"abc");
+}
+''');
+    await assertHasAssistAt('"ab', '''
+main() {
+  print(r'abc');
+}
+''');
+  }
+
+  test_one_simple() async {
+    await resolveTestUnit('''
+main() {
+  print("abc");
+}
+''');
+    await assertHasAssistAt('"ab', '''
+main() {
+  print('abc');
+}
+''');
+  }
+
+  test_three_embeddedTarget() async {
+    await resolveTestUnit('''
+main() {
+  print("""a''\'bc""");
+}
+''');
+    await assertNoAssistAt('"a');
+  }
+
+  test_three_enclosingTarget() async {
+    await resolveTestUnit("""
+main() {
+  print('''abc''');
+}
+""");
+    await assertNoAssistAt("'ab");
+  }
+
+  test_three_interpolation() async {
+    await resolveTestUnit(r'''
+main() {
+  var b = 'b';
+  var c = 'c';
+  print("""a $b-${c} d""");
+}
+''');
+    await assertHasAssistAt(r'"a $b', r"""
+main() {
+  var b = 'b';
+  var c = 'c';
+  print('''a $b-${c} d''');
+}
+""");
+  }
+
+  test_three_raw() async {
+    await resolveTestUnit('''
+main() {
+  print(r"""abc""");
+}
+''');
+    await assertHasAssistAt('"ab', """
+main() {
+  print(r'''abc''');
+}
+""");
+  }
+
+  test_three_simple() async {
+    await resolveTestUnit('''
+main() {
+  print("""abc""");
+}
+''');
+    await assertHasAssistAt('"ab', """
+main() {
+  print('''abc''');
+}
+""");
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/encapsulate_field_test.dart b/pkg/analysis_server/test/src/services/correction/assist/encapsulate_field_test.dart
new file mode 100644
index 0000000..98e3baf
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/encapsulate_field_test.dart
@@ -0,0 +1,164 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(EncapsulateFieldTest);
+  });
+}
+
+@reflectiveTest
+class EncapsulateFieldTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.ENCAPSULATE_FIELD;
+
+  test_alreadyPrivate() async {
+    await resolveTestUnit('''
+class A {
+  int _test = 42;
+}
+main(A a) {
+  print(a._test);
+}
+''');
+    await assertNoAssistAt('_test =');
+  }
+
+  test_documentation() async {
+    await resolveTestUnit('''
+class A {
+  /// AAA
+  /// BBB
+  int test;
+}
+''');
+    await assertHasAssistAt('test;', '''
+class A {
+  /// AAA
+  /// BBB
+  int _test;
+
+  /// AAA
+  /// BBB
+  int get test => _test;
+
+  /// AAA
+  /// BBB
+  set test(int test) {
+    _test = test;
+  }
+}
+''');
+  }
+
+  test_final() async {
+    await resolveTestUnit('''
+class A {
+  final int test = 42;
+}
+''');
+    await assertNoAssistAt('test =');
+  }
+
+  test_hasType() async {
+    await resolveTestUnit('''
+class A {
+  int test = 42;
+  A(this.test);
+}
+main(A a) {
+  print(a.test);
+}
+''');
+    await assertHasAssistAt('test = 42', '''
+class A {
+  int _test = 42;
+
+  int get test => _test;
+
+  set test(int test) {
+    _test = test;
+  }
+  A(this._test);
+}
+main(A a) {
+  print(a.test);
+}
+''');
+  }
+
+  test_multipleFields() async {
+    await resolveTestUnit('''
+class A {
+  int aaa, bbb, ccc;
+}
+main(A a) {
+  print(a.bbb);
+}
+''');
+    await assertNoAssistAt('bbb, ');
+  }
+
+  test_notOnName() async {
+    await resolveTestUnit('''
+class A {
+  int test = 1 + 2 + 3;
+}
+''');
+    await assertNoAssistAt('+ 2');
+  }
+
+  test_noType() async {
+    await resolveTestUnit('''
+class A {
+  var test = 42;
+}
+main(A a) {
+  print(a.test);
+}
+''');
+    await assertHasAssistAt('test = 42', '''
+class A {
+  var _test = 42;
+
+  get test => _test;
+
+  set test(test) {
+    _test = test;
+  }
+}
+main(A a) {
+  print(a.test);
+}
+''');
+  }
+
+  test_parseError() async {
+    verifyNoTestUnitErrors = false;
+    await resolveTestUnit('''
+class A {
+  int; // marker
+}
+main(A a) {
+  print(a.test);
+}
+''');
+    await assertNoAssistAt('; // marker');
+  }
+
+  test_static() async {
+    await resolveTestUnit('''
+class A {
+  static int test = 42;
+}
+''');
+    await assertNoAssistAt('test =');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/exchange_operands_test.dart b/pkg/analysis_server/test/src/services/correction/assist/exchange_operands_test.dart
new file mode 100644
index 0000000..8bbcd52
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/exchange_operands_test.dart
@@ -0,0 +1,177 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ExchangeOperandsTest);
+  });
+}
+
+@reflectiveTest
+class ExchangeOperandsTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.EXCHANGE_OPERANDS;
+
+  test_compare() async {
+    const initialOperators = const ['<', '<=', '>', '>='];
+    const resultOperators = const ['>', '>=', '<', '<='];
+    for (int i = 0; i <= 0; i++) {
+      String initialOperator = initialOperators[i];
+      String resultOperator = resultOperators[i];
+      await resolveTestUnit('''
+bool main(int a, int b) {
+  return a $initialOperator b;
+}
+''');
+      await assertHasAssistAt(initialOperator, '''
+bool main(int a, int b) {
+  return b $resultOperator a;
+}
+''');
+    }
+  }
+
+  test_extended_mixOperator_1() async {
+    await resolveTestUnit('''
+main() {
+  1 * 2 * 3 + 4;
+}
+''');
+    await assertHasAssistAt('* 2', '''
+main() {
+  2 * 3 * 1 + 4;
+}
+''');
+  }
+
+  test_extended_mixOperator_2() async {
+    await resolveTestUnit('''
+main() {
+  1 + 2 - 3 + 4;
+}
+''');
+    await assertHasAssistAt('+ 2', '''
+main() {
+  2 + 1 - 3 + 4;
+}
+''');
+  }
+
+  test_extended_sameOperator_afterFirst() async {
+    await resolveTestUnit('''
+main() {
+  1 + 2 + 3;
+}
+''');
+    await assertHasAssistAt('+ 2', '''
+main() {
+  2 + 3 + 1;
+}
+''');
+  }
+
+  test_extended_sameOperator_afterSecond() async {
+    await resolveTestUnit('''
+main() {
+  1 + 2 + 3;
+}
+''');
+    await assertHasAssistAt('+ 3', '''
+main() {
+  3 + 1 + 2;
+}
+''');
+  }
+
+  test_extraLength() async {
+    await resolveTestUnit('''
+main() {
+  111 + 222;
+}
+''');
+    await assertNoAssistAt('+ 222', length: 3);
+  }
+
+  test_onOperand() async {
+    await resolveTestUnit('''
+main() {
+  111 + 222;
+}
+''');
+    await assertNoAssistAt('11 +', length: 3);
+  }
+
+  test_selectionWithBinary() async {
+    await resolveTestUnit('''
+main() {
+  1 + 2 + 3;
+}
+''');
+    await assertNoAssistAt('1 + 2 + 3', length: '1 + 2 + 3'.length);
+  }
+
+  test_simple_afterOperator() async {
+    await resolveTestUnit('''
+main() {
+  1 + 2;
+}
+''');
+    await assertHasAssistAt(' 2', '''
+main() {
+  2 + 1;
+}
+''');
+  }
+
+  test_simple_beforeOperator() async {
+    await resolveTestUnit('''
+main() {
+  1 + 2;
+}
+''');
+    await assertHasAssistAt('+ 2', '''
+main() {
+  2 + 1;
+}
+''');
+  }
+
+  test_simple_fullSelection() async {
+    await resolveTestUnit('''
+main() {
+  1 + 2;
+}
+''');
+    await assertHasAssistAt(
+        '1 + 2',
+        '''
+main() {
+  2 + 1;
+}
+''',
+        length: '1 + 2'.length);
+  }
+
+  test_simple_withLength() async {
+    await resolveTestUnit('''
+main() {
+  1 + 2;
+}
+''');
+    await assertHasAssistAt(
+        '+ 2',
+        '''
+main() {
+  2 + 1;
+}
+''',
+        length: 2);
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_convert_to_children_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_convert_to_children_test.dart
new file mode 100644
index 0000000..8d34099
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_convert_to_children_test.dart
@@ -0,0 +1,158 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterConvertToChildrenTest);
+  });
+}
+
+@reflectiveTest
+class FlutterConvertToChildrenTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_CONVERT_TO_CHILDREN;
+
+  test_childUnresolved() async {
+    addFlutterPackage();
+    verifyNoTestUnitErrors = false;
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+build() {
+  return new Row(
+    /*caret*/child: new Container()
+  );
+}
+''');
+    await assertNoAssist();
+  }
+
+  test_multiLine() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+build() {
+  return new Scaffold(
+// start
+    body: new Center(
+      /*caret*/child: new Container(
+        width: 200.0,
+        height: 300.0,
+      ),
+      key: null,
+    ),
+// end
+  );
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+build() {
+  return new Scaffold(
+// start
+    body: new Center(
+      /*caret*/children: <Widget>[
+        new Container(
+          width: 200.0,
+          height: 300.0,
+        ),
+      ],
+      key: null,
+    ),
+// end
+  );
+}
+''');
+  }
+
+  test_newlineChild() async {
+    // This case could occur with deeply nested constructors, common in Flutter.
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+build() {
+  return new Scaffold(
+// start
+    body: new Center(
+      /*caret*/child:
+          new Container(
+        width: 200.0,
+        height: 300.0,
+      ),
+      key: null,
+    ),
+// end
+  );
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+build() {
+  return new Scaffold(
+// start
+    body: new Center(
+      /*caret*/children: <Widget>[
+        new Container(
+          width: 200.0,
+          height: 300.0,
+        ),
+      ],
+      key: null,
+    ),
+// end
+  );
+}
+''');
+  }
+
+  test_notOnChild() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+build() {
+  return new Scaffold(
+    body: /*caret*/new Center(
+      child: new Container(),
+    ),
+  );
+}
+''');
+    await assertNoAssist();
+  }
+
+  test_singleLine() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+build() {
+  return new Scaffold(
+// start
+    body: new Center(
+      /*caret*/child: new GestureDetector(),
+      key: null,
+    ),
+// end
+  );
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+build() {
+  return new Scaffold(
+// start
+    body: new Center(
+      /*caret*/children: <Widget>[new GestureDetector()],
+      key: null,
+    ),
+// end
+  );
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_convert_to_stateful_widget_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_convert_to_stateful_widget_test.dart
new file mode 100644
index 0000000..977ea72
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_convert_to_stateful_widget_test.dart
@@ -0,0 +1,403 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterConvertToStatefulWidgetTest);
+  });
+}
+
+@reflectiveTest
+class FlutterConvertToStatefulWidgetTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_CONVERT_TO_STATEFUL_WIDGET;
+
+  test_empty() async {
+    addFlutterPackage();
+    await resolveTestUnit(r'''
+import 'package:flutter/material.dart';
+
+class /*caret*/MyWidget extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return new Container();
+  }
+}
+''');
+    await assertHasAssist(r'''
+import 'package:flutter/material.dart';
+
+class /*caret*/MyWidget extends StatefulWidget {
+  @override
+  MyWidgetState createState() {
+    return new MyWidgetState();
+  }
+}
+
+class MyWidgetState extends State<MyWidget> {
+  @override
+  Widget build(BuildContext context) {
+    return new Container();
+  }
+}
+''');
+  }
+
+  test_fields() async {
+    addFlutterPackage();
+    await resolveTestUnit(r'''
+import 'package:flutter/material.dart';
+
+class /*caret*/MyWidget extends StatelessWidget {
+  static String staticField1;
+  final String instanceField1;
+  final String instanceField2;
+  String instanceField3;
+  static String staticField2;
+  String instanceField4;
+  String instanceField5;
+  static String staticField3;
+
+  MyWidget(this.instanceField1) : instanceField2 = '' {
+    instanceField3 = '';
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    instanceField4 = instanceField1;
+    return new Row(
+      children: [
+        new Text(instanceField1),
+        new Text(instanceField2),
+        new Text(instanceField3),
+        new Text(instanceField4),
+        new Text(instanceField5),
+        new Text(staticField1),
+        new Text(staticField2),
+        new Text(staticField3),
+      ],
+    );
+  }
+}
+''');
+    await assertHasAssist(r'''
+import 'package:flutter/material.dart';
+
+class /*caret*/MyWidget extends StatefulWidget {
+  static String staticField1;
+  final String instanceField1;
+  final String instanceField2;
+  String instanceField3;
+  static String staticField2;
+  static String staticField3;
+
+  MyWidget(this.instanceField1) : instanceField2 = '' {
+    instanceField3 = '';
+  }
+
+  @override
+  MyWidgetState createState() {
+    return new MyWidgetState();
+  }
+}
+
+class MyWidgetState extends State<MyWidget> {
+  String instanceField4;
+
+  String instanceField5;
+
+  @override
+  Widget build(BuildContext context) {
+    instanceField4 = widget.instanceField1;
+    return new Row(
+      children: [
+        new Text(widget.instanceField1),
+        new Text(widget.instanceField2),
+        new Text(widget.instanceField3),
+        new Text(instanceField4),
+        new Text(instanceField5),
+        new Text(MyWidget.staticField1),
+        new Text(MyWidget.staticField2),
+        new Text(MyWidget.staticField3),
+      ],
+    );
+  }
+}
+''');
+  }
+
+  test_getters() async {
+    addFlutterPackage();
+    await resolveTestUnit(r'''
+import 'package:flutter/material.dart';
+
+class /*caret*/MyWidget extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return new Row(
+      children: [
+        new Text(staticGetter1),
+        new Text(staticGetter2),
+        new Text(instanceGetter1),
+        new Text(instanceGetter2),
+      ],
+    );
+  }
+
+  static String get staticGetter1 => '';
+
+  String get instanceGetter1 => '';
+
+  static String get staticGetter2 => '';
+
+  String get instanceGetter2 => '';
+}
+''');
+    await assertHasAssist(r'''
+import 'package:flutter/material.dart';
+
+class /*caret*/MyWidget extends StatefulWidget {
+  @override
+  MyWidgetState createState() {
+    return new MyWidgetState();
+  }
+
+  static String get staticGetter1 => '';
+
+  static String get staticGetter2 => '';
+}
+
+class MyWidgetState extends State<MyWidget> {
+  @override
+  Widget build(BuildContext context) {
+    return new Row(
+      children: [
+        new Text(MyWidget.staticGetter1),
+        new Text(MyWidget.staticGetter2),
+        new Text(instanceGetter1),
+        new Text(instanceGetter2),
+      ],
+    );
+  }
+
+  String get instanceGetter1 => '';
+
+  String get instanceGetter2 => '';
+}
+''');
+  }
+
+  test_methods() async {
+    addFlutterPackage();
+    await resolveTestUnit(r'''
+import 'package:flutter/material.dart';
+
+class /*caret*/MyWidget extends StatelessWidget {
+  static String staticField;
+  final String instanceField1;
+  String instanceField2;
+
+  MyWidget(this.instanceField1);
+
+  @override
+  Widget build(BuildContext context) {
+    return new Row(
+      children: [
+        new Text(instanceField1),
+        new Text(instanceField2),
+        new Text(staticField),
+      ],
+    );
+  }
+
+  void instanceMethod1() {
+    instanceMethod1();
+    instanceMethod2();
+    staticMethod1();
+  }
+
+  static void staticMethod1() {
+    print('static 1');
+  }
+
+  void instanceMethod2() {
+    print('instance 2');
+  }
+
+  static void staticMethod2() {
+    print('static 2');
+  }
+}
+''');
+    await assertHasAssist(r'''
+import 'package:flutter/material.dart';
+
+class /*caret*/MyWidget extends StatefulWidget {
+  static String staticField;
+  final String instanceField1;
+
+  MyWidget(this.instanceField1);
+
+  @override
+  MyWidgetState createState() {
+    return new MyWidgetState();
+  }
+
+  static void staticMethod1() {
+    print('static 1');
+  }
+
+  static void staticMethod2() {
+    print('static 2');
+  }
+}
+
+class MyWidgetState extends State<MyWidget> {
+  String instanceField2;
+
+  @override
+  Widget build(BuildContext context) {
+    return new Row(
+      children: [
+        new Text(widget.instanceField1),
+        new Text(instanceField2),
+        new Text(MyWidget.staticField),
+      ],
+    );
+  }
+
+  void instanceMethod1() {
+    instanceMethod1();
+    instanceMethod2();
+    MyWidget.staticMethod1();
+  }
+
+  void instanceMethod2() {
+    print('instance 2');
+  }
+}
+''');
+  }
+
+  test_notClass() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+/*caret*/main() {}
+''');
+    assertNoAssist();
+  }
+
+  test_notStatelessWidget() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+class /*caret*/MyWidget extends Text {
+  MyWidget() : super('');
+}
+''');
+    assertNoAssist();
+  }
+
+  test_notWidget() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+class /*caret*/MyWidget {}
+''');
+    assertNoAssist();
+  }
+
+  test_simple() async {
+    addFlutterPackage();
+    await resolveTestUnit(r'''
+import 'package:flutter/material.dart';
+
+class /*caret*/MyWidget extends StatelessWidget {
+  final String aaa;
+  final String bbb;
+
+  const MyWidget(this.aaa, this.bbb);
+
+  @override
+  Widget build(BuildContext context) {
+    return new Row(
+      children: [
+        new Text(aaa),
+        new Text(bbb),
+        new Text('$aaa'),
+        new Text('${bbb}'),
+      ],
+    );
+  }
+}
+''');
+    await assertHasAssist(r'''
+import 'package:flutter/material.dart';
+
+class /*caret*/MyWidget extends StatefulWidget {
+  final String aaa;
+  final String bbb;
+
+  const MyWidget(this.aaa, this.bbb);
+
+  @override
+  MyWidgetState createState() {
+    return new MyWidgetState();
+  }
+}
+
+class MyWidgetState extends State<MyWidget> {
+  @override
+  Widget build(BuildContext context) {
+    return new Row(
+      children: [
+        new Text(widget.aaa),
+        new Text(widget.bbb),
+        new Text('${widget.aaa}'),
+        new Text('${widget.bbb}'),
+      ],
+    );
+  }
+}
+''');
+  }
+
+  test_tail() async {
+    addFlutterPackage();
+    await resolveTestUnit(r'''
+import 'package:flutter/material.dart';
+
+class /*caret*/MyWidget extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return new Container();
+  }
+}
+''');
+    await assertHasAssist(r'''
+import 'package:flutter/material.dart';
+
+class /*caret*/MyWidget extends StatefulWidget {
+  @override
+  MyWidgetState createState() {
+    return new MyWidgetState();
+  }
+}
+
+class MyWidgetState extends State<MyWidget> {
+  @override
+  Widget build(BuildContext context) {
+    return new Container();
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_move_down_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_move_down_test.dart
new file mode 100644
index 0000000..5885e70
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_move_down_test.dart
@@ -0,0 +1,80 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterMoveDownTest);
+  });
+}
+
+@reflectiveTest
+class FlutterMoveDownTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_MOVE_DOWN;
+
+  test_first() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: <Widget>[
+      new Text('aaa'),
+      /*caret*/new Text('bbbbbb'),
+      new Text('ccccccccc'),
+    ],
+  );
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: <Widget>[
+      new Text('aaa'),
+      /*caret*/new Text('ccccccccc'),
+      new Text('bbbbbb'),
+    ],
+  );
+}
+''');
+    assertExitPosition(before: "new Text('bbbbbb')");
+  }
+
+  test_last() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: <Widget>[
+      new Text('aaa'),
+      new Text('bbb'),
+      /*caret*/new Text('ccc'),
+    ],
+  );
+}
+''');
+    await assertNoAssist();
+  }
+
+  test_notInList() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  new Center(
+    child: /*caret*/new Text('aaa'),
+  );
+}
+''');
+    await assertNoAssist();
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_move_up_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_move_up_test.dart
new file mode 100644
index 0000000..771bb73
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_move_up_test.dart
@@ -0,0 +1,80 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterMoveUpTest);
+  });
+}
+
+@reflectiveTest
+class FlutterMoveUpTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_MOVE_UP;
+
+  test_first() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: <Widget>[
+      /*caret*/new Text('aaa'),
+      new Text('bbb'),
+      new Text('ccc'),
+    ],
+  );
+}
+''');
+    await assertNoAssist();
+  }
+
+  test_last() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: <Widget>[
+      new Text('aaa'),
+      /*caret*/new Text('bbbbbb'),
+      new Text('ccccccccc'),
+    ],
+  );
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: <Widget>[
+      new Text('bbbbbb'),
+      /*caret*/new Text('aaa'),
+      new Text('ccccccccc'),
+    ],
+  );
+}
+''');
+    assertExitPosition(before: "new Text('bbbbbb')");
+  }
+
+  test_notInList() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  new Center(
+    child: /*caret*/new Text('aaa'),
+  );
+}
+''');
+    await assertNoAssist();
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_remove_widget_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_remove_widget_test.dart
new file mode 100644
index 0000000..842b191
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_remove_widget_test.dart
@@ -0,0 +1,236 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterRemoveWidgetTest);
+  });
+}
+
+@reflectiveTest
+class FlutterRemoveWidgetTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_REMOVE_WIDGET;
+
+  test_childIntoChild_multiLine() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: <Widget>[
+      new Center(
+        child: new /*caret*/Padding(
+          padding: const EdgeInsets.all(8.0),
+          child: new Center(
+            heightFactor: 0.5,
+            child: new Text('foo'),
+          ),
+        ),
+      ),
+    ],
+  );
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: <Widget>[
+      new Center(
+        child: new Center(
+          heightFactor: 0.5,
+          child: new Text('foo'),
+        ),
+      ),
+    ],
+  );
+}
+''');
+  }
+
+  test_childIntoChild_singleLine() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  new Padding(
+    padding: const EdgeInsets.all(8.0),
+    child: new /*caret*/Center(
+      heightFactor: 0.5,
+      child: new Text('foo'),
+    ),
+  );
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+main() {
+  new Padding(
+    padding: const EdgeInsets.all(8.0),
+    child: new Text('foo'),
+  );
+}
+''');
+  }
+
+  test_childIntoChildren() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: <Widget>[
+      new Text('foo'),
+      new /*caret*/Center(
+        heightFactor: 0.5,
+        child: new Padding(
+          padding: const EdgeInsets.all(8.0),
+          child: new Text('bar'),
+        ),
+      ),
+      new Text('baz'),
+    ],
+  );
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: <Widget>[
+      new Text('foo'),
+      new Padding(
+        padding: const EdgeInsets.all(8.0),
+        child: new Text('bar'),
+      ),
+      new Text('baz'),
+    ],
+  );
+}
+''');
+  }
+
+  test_childrenMultipleIntoChild() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  new Center(
+    child: new /*caret*/Row(
+      children: [
+        new Text('aaa'),
+        new Text('bbb'),
+      ],
+    ),
+  );
+}
+''');
+    await assertNoAssist();
+  }
+
+  test_childrenOneIntoChild() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  new Center(
+    child: /*caret*/new Column(
+      children: [
+        new Text('foo'),
+      ],
+    ),
+  );
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+main() {
+  new Center(
+    child: /*caret*/new Text('foo'),
+  );
+}
+''');
+  }
+
+  test_childrenOneIntoReturn() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  return /*caret*/new Column(
+    children: [
+      new Text('foo'),
+    ],
+  );
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+main() {
+  return /*caret*/new Text('foo');
+}
+''');
+  }
+
+  test_intoChildren() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: <Widget>[
+      new Text('aaa'),
+      new /*caret*/Column(
+        children: [
+          new Row(
+            children: [
+              new Text('bbb'),
+              new Text('ccc'),
+            ],
+          ),
+          new Row(
+            children: [
+              new Text('ddd'),
+              new Text('eee'),
+            ],
+          ),
+        ],
+      ),
+      new Text('fff'),
+    ],
+  );
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: <Widget>[
+      new Text('aaa'),
+      new Row(
+        children: [
+          new Text('bbb'),
+          new Text('ccc'),
+        ],
+      ),
+      new Row(
+        children: [
+          new Text('ddd'),
+          new Text('eee'),
+        ],
+      ),
+      new Text('fff'),
+    ],
+  );
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_swap_with_child_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_swap_with_child_test.dart
new file mode 100644
index 0000000..03b6f84
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_swap_with_child_test.dart
@@ -0,0 +1,112 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterSwapWithChildTest);
+  });
+}
+
+@reflectiveTest
+class FlutterSwapWithChildTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_SWAP_WITH_CHILD;
+
+  test_aroundCenter() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+build() {
+  return new Scaffold(
+    body: new /*caret*/GestureDetector(
+      onTap: () => startResize(),
+      child: new Center(
+        child: new Container(
+          width: 200.0,
+          height: 300.0,
+        ),
+        key: null,
+      ),
+    ),
+  );
+}
+startResize() {}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+build() {
+  return new Scaffold(
+    body: new Center(
+      key: null,
+      child: new /*caret*/GestureDetector(
+        onTap: () => startResize(),
+        child: new Container(
+          width: 200.0,
+          height: 300.0,
+        ),
+      ),
+    ),
+  );
+}
+startResize() {}
+''');
+  }
+
+  test_notFormatted() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+
+class Foo extends StatefulWidget {
+  @override
+  _State createState() => new _State();
+}
+
+class _State extends State<Foo> {
+  @override
+  Widget build(BuildContext context) {
+    return new /*caret*/Expanded(
+      flex: 2,
+      child: new GestureDetector(
+        child: new Text(
+          'foo',
+        ), onTap: () {
+          print(42);
+      },
+      ),
+    );
+  }
+}''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+
+class Foo extends StatefulWidget {
+  @override
+  _State createState() => new _State();
+}
+
+class _State extends State<Foo> {
+  @override
+  Widget build(BuildContext context) {
+    return new GestureDetector(
+      onTap: () {
+        print(42);
+    },
+      child: new /*caret*/Expanded(
+        flex: 2,
+        child: new Text(
+          'foo',
+        ),
+      ),
+    );
+  }
+}''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_swap_with_parent_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_swap_with_parent_test.dart
new file mode 100644
index 0000000..d5ad1d3
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_swap_with_parent_test.dart
@@ -0,0 +1,160 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterSwapWithParentTest);
+  });
+}
+
+@reflectiveTest
+class FlutterSwapWithParentTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_SWAP_WITH_PARENT;
+
+  test_inCenter() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+build() {
+  return new Scaffold(
+    body: new Center(
+      child: new /*caret*/GestureDetector(
+        onTap: () => startResize(),
+        child: new Container(
+          width: 200.0,
+          height: 300.0,
+        ),
+      ),
+      key: null,
+    ),
+  );
+}
+startResize() {}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+build() {
+  return new Scaffold(
+    body: new /*caret*/GestureDetector(
+      onTap: () => startResize(),
+      child: new Center(
+        key: null,
+        child: new Container(
+          width: 200.0,
+          height: 300.0,
+        ),
+      ),
+    ),
+  );
+}
+startResize() {}
+''');
+  }
+
+  test_notFormatted() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+
+class Foo extends StatefulWidget {
+  @override
+  _State createState() => new _State();
+}
+
+class _State extends State<Foo> {
+  @override
+  Widget build(BuildContext context) {
+    return new GestureDetector(
+      child: new /*caret*/Expanded(
+        child: new Text(
+          'foo',
+        ),
+        flex: 2,
+      ), onTap: () {
+        print(42);
+    },
+    );
+  }
+}''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+
+class Foo extends StatefulWidget {
+  @override
+  _State createState() => new _State();
+}
+
+class _State extends State<Foo> {
+  @override
+  Widget build(BuildContext context) {
+    return new /*caret*/Expanded(
+      flex: 2,
+      child: new GestureDetector(
+        onTap: () {
+          print(42);
+      },
+        child: new Text(
+          'foo',
+        ),
+      ),
+    );
+  }
+}''');
+  }
+
+  test_outerIsInChildren() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: [
+      new Column(
+        children: [
+          new Padding(
+            padding: new EdgeInsets.all(16.0),
+            child: new /*caret*/Center(
+              child: new Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: <Widget>[],
+              ),
+            ),
+          ),
+        ],
+      ),
+    ],
+  );
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/material.dart';
+main() {
+  new Column(
+    children: [
+      new Column(
+        children: [
+          new /*caret*/Center(
+            child: new Padding(
+              padding: new EdgeInsets.all(16.0),
+              child: new Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: <Widget>[],
+              ),
+            ),
+          ),
+        ],
+      ),
+    ],
+  );
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_center_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_center_test.dart
new file mode 100644
index 0000000..4e300e2
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_center_test.dart
@@ -0,0 +1,84 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterWrapCenterTest);
+  });
+}
+
+@reflectiveTest
+class FlutterWrapCenterTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_WRAP_CENTER;
+
+  test_aroundCenter() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+    return /*caret*/new Center();
+  }
+}
+''');
+    await assertNoAssist();
+  }
+
+  test_aroundContainer() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+    return /*caret*/new Container();
+  }
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+    return /*caret*/Center(child: new Container());
+  }
+}
+''');
+  }
+
+  test_aroundNamedConstructor() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+
+class MyWidget extends StatelessWidget {
+  MyWidget.named();
+
+  Widget build(BuildContext context) => null;
+}
+
+main() {
+  return MyWidget./*caret*/named();
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+
+class MyWidget extends StatelessWidget {
+  MyWidget.named();
+
+  Widget build(BuildContext context) => null;
+}
+
+main() {
+  return Center(child: MyWidget./*caret*/named());
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_column_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_column_test.dart
new file mode 100644
index 0000000..cad4036
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_column_test.dart
@@ -0,0 +1,91 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterWrapColumnTest);
+  });
+}
+
+@reflectiveTest
+class FlutterWrapColumnTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_WRAP_COLUMN;
+
+  test_coveredByWidget() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+
+class FakeFlutter {
+  main() {
+    return new Container(
+      child: new /*caret*/Text('aaa'),
+    );
+  }
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+
+class FakeFlutter {
+  main() {
+    return new Container(
+      child: Column(
+        children: <Widget>[
+          new /*caret*/Text('aaa'),
+        ],
+      ),
+    );
+  }
+}
+''');
+  }
+
+  test_coversWidgets() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+
+class FakeFlutter {
+  main() {
+    return new Row(children: [
+      new Text('aaa'),
+// start
+      new Text('bbb'),
+      new Text('ccc'),
+// end
+      new Text('ddd'),
+    ]);
+  }
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+
+class FakeFlutter {
+  main() {
+    return new Row(children: [
+      new Text('aaa'),
+// start
+      Column(
+        children: <Widget>[
+          new Text('bbb'),
+          new Text('ccc'),
+        ],
+      ),
+// end
+      new Text('ddd'),
+    ]);
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_container_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_container_test.dart
new file mode 100644
index 0000000..15f8433
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_container_test.dart
@@ -0,0 +1,48 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterWrapContainerTest);
+  });
+}
+
+@reflectiveTest
+class FlutterWrapContainerTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_WRAP_CONTAINER;
+
+  test_aroundContainer() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+main() {
+  return /*caret*/new Container();
+}
+''');
+    await assertNoAssist();
+  }
+
+  test_aroundText() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+main() {
+  /*caret*/new Text('a');
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+main() {
+  /*caret*/Container(child: new Text('a'));
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_generic_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_generic_test.dart
new file mode 100644
index 0000000..30b416b
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_generic_test.dart
@@ -0,0 +1,313 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterWrapGenericTest);
+  });
+}
+
+@reflectiveTest
+class FlutterWrapGenericTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_WRAP_GENERIC;
+
+  test_minimal() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+/*caret*/x(){}
+''');
+    await assertNoAssist();
+  }
+
+  test_multiLine() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+build() {
+  return new Container(
+    child: new Row(
+// start
+      children: [/*caret*/
+        new Text('111'),
+        new Text('222'),
+        new Container(),
+      ],
+// end
+    ),
+  );
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+build() {
+  return new Container(
+    child: new Row(
+// start
+      children: [
+        new widget(
+          children: [/*caret*/
+            new Text('111'),
+            new Text('222'),
+            new Container(),
+          ],
+        ),
+      ],
+// end
+    ),
+  );
+}
+''');
+  }
+
+  test_multiLine_inListLiteral() async {
+    verifyNoTestUnitErrors = false;
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+build() {
+  return new Container(
+    child: new Row(
+      children: [/*caret*/
+// start
+        new Transform(),
+        new Object(),
+        new AspectRatio(),
+// end
+      ],
+    ),
+  );
+}
+''');
+    await assertNoAssist();
+  }
+
+  test_multiLines() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+    return new Container(
+// start
+      child: new /*caret*/DefaultTextStyle(
+        child: new Row(
+          children: <Widget>[
+            new Container(
+            ),
+          ],
+        ),
+      ),
+// end
+    );
+  }
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+    return new Container(
+// start
+      child: widget(
+        child: new /*caret*/DefaultTextStyle(
+          child: new Row(
+            children: <Widget>[
+              new Container(
+              ),
+            ],
+          ),
+        ),
+      ),
+// end
+    );
+  }
+}
+''');
+  }
+
+  test_multiLines_eol2() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {\r
+  main() {\r
+    return new Container(\r
+// start\r
+      child: new /*caret*/DefaultTextStyle(\r
+        child: new Row(\r
+          children: <Widget>[\r
+            new Container(\r
+            ),\r
+          ],\r
+        ),\r
+      ),\r
+// end\r
+    );\r
+  }\r
+}\r
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {\r
+  main() {\r
+    return new Container(\r
+// start\r
+      child: widget(\r
+        child: new /*caret*/DefaultTextStyle(\r
+          child: new Row(\r
+            children: <Widget>[\r
+              new Container(\r
+              ),\r
+            ],\r
+          ),\r
+        ),\r
+      ),\r
+// end\r
+    );\r
+  }\r
+}\r
+''');
+  }
+
+  test_prefixedIdentifier_identifier() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+
+abstract class Foo extends Widget {
+  Widget bar;
+}
+
+main(Foo foo) {
+  return foo./*caret*/bar;
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+
+abstract class Foo extends Widget {
+  Widget bar;
+}
+
+main(Foo foo) {
+  return widget(child: foo./*caret*/bar);
+}
+''');
+  }
+
+  test_prefixedIdentifier_prefix() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+
+abstract class Foo extends Widget {
+  Widget bar;
+}
+
+main(Foo foo) {
+  return /*caret*/foo.bar;
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+
+abstract class Foo extends Widget {
+  Widget bar;
+}
+
+main(Foo foo) {
+  return /*caret*/widget(child: foo.bar);
+}
+''');
+  }
+
+  test_singleLine() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+  var obj;
+// start
+    return new Row(children: [/*caret*/ new Container()]);
+// end
+  }
+}
+''');
+    await assertNoAssist();
+  }
+
+  test_singleLine1() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+// start
+    return /*caret*/new Container();
+// end
+  }
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+// start
+    return /*caret*/widget(child: new Container());
+// end
+  }
+}
+''');
+  }
+
+  test_singleLine2() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+    return new ClipRect./*caret*/rect();
+  }
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+    return widget(child: new ClipRect./*caret*/rect());
+  }
+}
+''');
+  }
+
+  test_variable() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+    var container = new Container();
+    return /*caret*/container;
+  }
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+    var container = new Container();
+    return /*caret*/widget(child: container);
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_padding_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_padding_test.dart
new file mode 100644
index 0000000..50b927b
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_padding_test.dart
@@ -0,0 +1,57 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterWrapPaddingTest);
+  });
+}
+
+@reflectiveTest
+class FlutterWrapPaddingTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_WRAP_PADDING;
+
+  test_aroundContainer() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+    return /*caret*/new Container();
+  }
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+    return /*caret*/Padding(
+      padding: const EdgeInsets.all(8.0),
+      child: new Container(),
+    );
+  }
+}
+''');
+  }
+
+  test_aroundPadding() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+class FakeFlutter {
+  main() {
+    return /*caret*/new Padding();
+  }
+}
+''');
+    await assertNoAssist();
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_row_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_row_test.dart
new file mode 100644
index 0000000..c18ac34
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_row_test.dart
@@ -0,0 +1,61 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterWrapRowTest);
+  });
+}
+
+@reflectiveTest
+class FlutterWrapRowTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_WRAP_ROW;
+
+  test_twoWidgets() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+
+class FakeFlutter {
+  main() {
+    return new Column(children: [
+      new Text('aaa'),
+// start
+      new Text('bbb'),
+      new Text('ccc'),
+// end
+      new Text('ddd'),
+    ]);
+  }
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+
+class FakeFlutter {
+  main() {
+    return new Column(children: [
+      new Text('aaa'),
+// start
+      Row(
+        children: <Widget>[
+          new Text('bbb'),
+          new Text('ccc'),
+        ],
+      ),
+// end
+      new Text('ddd'),
+    ]);
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_stream_builder_test.dart b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_stream_builder_test.dart
new file mode 100644
index 0000000..be7d5c2
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/flutter_wrap_stream_builder_test.dart
@@ -0,0 +1,59 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FlutterWrapStreamBuilderTest);
+  });
+}
+
+@reflectiveTest
+class FlutterWrapStreamBuilderTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.FLUTTER_WRAP_STREAM_BUILDER;
+
+  test_aroundStreamBuilder() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+
+main() {
+  /*caret*/StreamBuilder(
+    stream: null,
+    builder: (context, snapshot) => null,
+  );
+}
+''');
+    await assertNoAssist();
+  }
+
+  test_aroundText() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+
+main() {
+  /*caret*/new Text('a');
+}
+''');
+    await assertHasAssist('''
+import 'package:flutter/widgets.dart';
+
+main() {
+  /*caret*/StreamBuilder<Object>(
+    stream: null,
+    builder: (context, snapshot) {
+      return new Text('a');
+    }
+  );
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/import_add_show_test.dart b/pkg/analysis_server/test/src/services/correction/assist/import_add_show_test.dart
new file mode 100644
index 0000000..4c62dde
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/import_add_show_test.dart
@@ -0,0 +1,101 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ImportAddShowTest);
+  });
+}
+
+@reflectiveTest
+class ImportAddShowTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.IMPORT_ADD_SHOW;
+
+  test_hasShow() async {
+    await resolveTestUnit('''
+import 'dart:math' show PI;
+main() {
+  PI;
+}
+''');
+    await assertNoAssistAt('import ');
+  }
+
+  test_hasUnresolvedIdentifier() async {
+    await resolveTestUnit('''
+import 'dart:math';
+main(x) {
+  PI;
+  return x.foo();
+}
+''');
+    await assertHasAssistAt('import ', '''
+import 'dart:math' show PI;
+main(x) {
+  PI;
+  return x.foo();
+}
+''');
+  }
+
+  test_onDirective() async {
+    await resolveTestUnit('''
+import 'dart:math';
+main() {
+  PI;
+  E;
+  max(1, 2);
+}
+''');
+    await assertHasAssistAt('import ', '''
+import 'dart:math' show E, PI, max;
+main() {
+  PI;
+  E;
+  max(1, 2);
+}
+''');
+  }
+
+  test_onUri() async {
+    await resolveTestUnit('''
+import 'dart:math';
+main() {
+  PI;
+  E;
+  max(1, 2);
+}
+''');
+    await assertHasAssistAt('art:math', '''
+import 'dart:math' show E, PI, max;
+main() {
+  PI;
+  E;
+  max(1, 2);
+}
+''');
+  }
+
+  test_unresolvedUri() async {
+    verifyNoTestUnitErrors = false;
+    await resolveTestUnit('''
+import '/no/such/lib.dart';
+''');
+    await assertNoAssistAt('import ');
+  }
+
+  test_unused() async {
+    await resolveTestUnit('''
+import 'dart:math';
+''');
+    await assertNoAssistAt('import ');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/introduce_local_cast_type_test.dart b/pkg/analysis_server/test/src/services/correction/assist/introduce_local_cast_type_test.dart
new file mode 100644
index 0000000..2201266
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/introduce_local_cast_type_test.dart
@@ -0,0 +1,127 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/protocol/protocol_common.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(IntroduceLocalCastTypeTest);
+  });
+}
+
+@reflectiveTest
+class IntroduceLocalCastTypeTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.INTRODUCE_LOCAL_CAST_TYPE;
+
+  test_introduceLocalTestedType_notBlock() async {
+    await resolveTestUnit('''
+main(p) {
+  if (p is String)
+    print('not a block');
+}
+''');
+    await assertNoAssistAt('if (p');
+  }
+
+  test_introduceLocalTestedType_notIsExpression() async {
+    await resolveTestUnit('''
+main(p) {
+  if (p == null) {
+  }
+}
+''');
+    await assertNoAssistAt('if (p');
+  }
+
+  test_introduceLocalTestedType_notStatement() async {
+    await resolveTestUnit('''
+class C {
+  bool b;
+  C(v) : b = v is int;
+}''');
+    await assertNoAssistAt('is int');
+  }
+
+  test_introduceLocalTestedType_if_is() async {
+    await resolveTestUnit('''
+class MyTypeName {}
+main(p) {
+  if (p is MyTypeName) {
+  }
+  p = null;
+}
+''');
+    String expected = '''
+class MyTypeName {}
+main(p) {
+  if (p is MyTypeName) {
+    MyTypeName myTypeName = p;
+  }
+  p = null;
+}
+''';
+    await assertHasAssistAt('is MyType', expected);
+    assertLinkedGroup(
+        0,
+        ['myTypeName = '],
+        expectedSuggestions(LinkedEditSuggestionKind.VARIABLE,
+            ['myTypeName', 'typeName', 'name']));
+    // another good location
+    await assertHasAssistAt('if (p', expected);
+  }
+
+  test_introduceLocalTestedType_if_isNot() async {
+    await resolveTestUnit('''
+class MyTypeName {}
+main(p) {
+  if (p is! MyTypeName) {
+    return;
+  }
+}
+''');
+    String expected = '''
+class MyTypeName {}
+main(p) {
+  if (p is! MyTypeName) {
+    return;
+  }
+  MyTypeName myTypeName = p;
+}
+''';
+    await assertHasAssistAt('is! MyType', expected);
+    assertLinkedGroup(
+        0,
+        ['myTypeName = '],
+        expectedSuggestions(LinkedEditSuggestionKind.VARIABLE,
+            ['myTypeName', 'typeName', 'name']));
+    // another good location
+    await assertHasAssistAt('if (p', expected);
+  }
+
+  test_introduceLocalTestedType_while() async {
+    await resolveTestUnit('''
+main(p) {
+  while (p is String) {
+  }
+  p = null;
+}
+''');
+    String expected = '''
+main(p) {
+  while (p is String) {
+    String s = p;
+  }
+  p = null;
+}
+''';
+    await assertHasAssistAt('is String', expected);
+    await assertHasAssistAt('while (p', expected);
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/invert_if_statement_test.dart b/pkg/analysis_server/test/src/services/correction/assist/invert_if_statement_test.dart
new file mode 100644
index 0000000..54ba0aa
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/invert_if_statement_test.dart
@@ -0,0 +1,61 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(InvertIfStatementTest);
+  });
+}
+
+@reflectiveTest
+class InvertIfStatementTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.INVERT_IF_STATEMENT;
+
+  test_blocks() async {
+    await resolveTestUnit('''
+main() {
+  if (true) {
+    0;
+  } else {
+    1;
+  }
+}
+''');
+    await assertHasAssistAt('if (', '''
+main() {
+  if (false) {
+    1;
+  } else {
+    0;
+  }
+}
+''');
+  }
+
+  test_statements() async {
+    await resolveTestUnit('''
+main() {
+  if (true)
+    0;
+  else
+    1;
+}
+''');
+    await assertHasAssistAt('if (', '''
+main() {
+  if (false)
+    1;
+  else
+    0;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/join_if_with_inner_test.dart b/pkg/analysis_server/test/src/services/correction/assist/join_if_with_inner_test.dart
new file mode 100644
index 0000000..a57c603
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/join_if_with_inner_test.dart
@@ -0,0 +1,255 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(JoinInWithInnerTest);
+  });
+}
+
+@reflectiveTest
+class JoinInWithInnerTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.JOIN_IF_WITH_INNER;
+
+  test_conditionAndOr() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2 || 3 == 3) {
+      print(0);
+    }
+  }
+}
+''');
+    await assertHasAssistAt('if (1 ==', '''
+main() {
+  if (1 == 1 && (2 == 2 || 3 == 3)) {
+    print(0);
+  }
+}
+''');
+  }
+
+  test_conditionInvocation() async {
+    await resolveTestUnit('''
+main() {
+  if (isCheck()) {
+    if (2 == 2) {
+      print(0);
+    }
+  }
+}
+bool isCheck() => false;
+''');
+    await assertHasAssistAt('if (isCheck', '''
+main() {
+  if (isCheck() && 2 == 2) {
+    print(0);
+  }
+}
+bool isCheck() => false;
+''');
+  }
+
+  test_conditionOrAnd() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1 || 2 == 2) {
+    if (3 == 3) {
+      print(0);
+    }
+  }
+}
+''');
+    await assertHasAssistAt('if (1 ==', '''
+main() {
+  if ((1 == 1 || 2 == 2) && 3 == 3) {
+    print(0);
+  }
+}
+''');
+  }
+
+  test_innerNotIf() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    print(0);
+  }
+}
+''');
+    await assertNoAssistAt('if (1 ==');
+  }
+
+  test_innerWithElse() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2) {
+      print(0);
+    } else {
+      print(1);
+    }
+  }
+}
+''');
+    await assertNoAssistAt('if (1 ==');
+  }
+
+  test_onCondition() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2) {
+      print(0);
+    }
+  }
+}
+''');
+    await assertHasAssistAt('1 ==', '''
+main() {
+  if (1 == 1 && 2 == 2) {
+    print(0);
+  }
+}
+''');
+  }
+
+  test_simpleConditions_block_block() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2) {
+      print(0);
+    }
+  }
+}
+''');
+    await assertHasAssistAt('if (1 ==', '''
+main() {
+  if (1 == 1 && 2 == 2) {
+    print(0);
+  }
+}
+''');
+  }
+
+  test_simpleConditions_block_single() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2)
+      print(0);
+  }
+}
+''');
+    await assertHasAssistAt('if (1 ==', '''
+main() {
+  if (1 == 1 && 2 == 2) {
+    print(0);
+  }
+}
+''');
+  }
+
+  test_simpleConditions_single_blockMulti() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2) {
+      print(1);
+      print(2);
+      print(3);
+    }
+  }
+}
+''');
+    await assertHasAssistAt('if (1 ==', '''
+main() {
+  if (1 == 1 && 2 == 2) {
+    print(1);
+    print(2);
+    print(3);
+  }
+}
+''');
+  }
+
+  test_simpleConditions_single_blockOne() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1)
+    if (2 == 2) {
+      print(0);
+    }
+}
+''');
+    await assertHasAssistAt('if (1 ==', '''
+main() {
+  if (1 == 1 && 2 == 2) {
+    print(0);
+  }
+}
+''');
+  }
+
+  test_statementAfterInner() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2) {
+      print(2);
+    }
+    print(1);
+  }
+}
+''');
+    await assertNoAssistAt('if (1 ==');
+  }
+
+  test_statementBeforeInner() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    print(1);
+    if (2 == 2) {
+      print(2);
+    }
+  }
+}
+''');
+    await assertNoAssistAt('if (1 ==');
+  }
+
+  test_targetNotIf() async {
+    await resolveTestUnit('''
+main() {
+  print(0);
+}
+''');
+    await assertNoAssistAt('print');
+  }
+
+  test_targetWithElse() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2) {
+      print(0);
+    }
+  } else {
+    print(1);
+  }
+}
+''');
+    await assertNoAssistAt('if (1 ==');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/join_if_with_outer_test.dart b/pkg/analysis_server/test/src/services/correction/assist/join_if_with_outer_test.dart
new file mode 100644
index 0000000..ffbd3ab
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/join_if_with_outer_test.dart
@@ -0,0 +1,255 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(JoinIfWithOuterTest);
+  });
+}
+
+@reflectiveTest
+class JoinIfWithOuterTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.JOIN_IF_WITH_OUTER;
+
+  test_conditionAndOr() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2 || 3 == 3) {
+      print(0);
+    }
+  }
+}
+''');
+    await assertHasAssistAt('if (2 ==', '''
+main() {
+  if (1 == 1 && (2 == 2 || 3 == 3)) {
+    print(0);
+  }
+}
+''');
+  }
+
+  test_conditionInvocation() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (isCheck()) {
+      print(0);
+    }
+  }
+}
+bool isCheck() => false;
+''');
+    await assertHasAssistAt('if (isCheck', '''
+main() {
+  if (1 == 1 && isCheck()) {
+    print(0);
+  }
+}
+bool isCheck() => false;
+''');
+  }
+
+  test_conditionOrAnd() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1 || 2 == 2) {
+    if (3 == 3) {
+      print(0);
+    }
+  }
+}
+''');
+    await assertHasAssistAt('if (3 == 3', '''
+main() {
+  if ((1 == 1 || 2 == 2) && 3 == 3) {
+    print(0);
+  }
+}
+''');
+  }
+
+  test_onCondition() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2) {
+      print(0);
+    }
+  }
+}
+''');
+    await assertHasAssistAt('if (2 == 2', '''
+main() {
+  if (1 == 1 && 2 == 2) {
+    print(0);
+  }
+}
+''');
+  }
+
+  test_outerNotIf() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    print(0);
+  }
+}
+''');
+    await assertNoAssistAt('if (1 == 1');
+  }
+
+  test_outerWithElse() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2) {
+      print(0);
+    }
+  } else {
+    print(1);
+  }
+}
+''');
+    await assertNoAssistAt('if (2 == 2');
+  }
+
+  test_simpleConditions_block_block() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2) {
+      print(0);
+    }
+  }
+}
+''');
+    await assertHasAssistAt('if (2 == 2', '''
+main() {
+  if (1 == 1 && 2 == 2) {
+    print(0);
+  }
+}
+''');
+  }
+
+  test_simpleConditions_block_single() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2)
+      print(0);
+  }
+}
+''');
+    await assertHasAssistAt('if (2 == 2', '''
+main() {
+  if (1 == 1 && 2 == 2) {
+    print(0);
+  }
+}
+''');
+  }
+
+  test_simpleConditions_single_blockMulti() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2) {
+      print(1);
+      print(2);
+      print(3);
+    }
+  }
+}
+''');
+    await assertHasAssistAt('if (2 == 2', '''
+main() {
+  if (1 == 1 && 2 == 2) {
+    print(1);
+    print(2);
+    print(3);
+  }
+}
+''');
+  }
+
+  test_simpleConditions_single_blockOne() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1)
+    if (2 == 2) {
+      print(0);
+    }
+}
+''');
+    await assertHasAssistAt('if (2 == 2', '''
+main() {
+  if (1 == 1 && 2 == 2) {
+    print(0);
+  }
+}
+''');
+  }
+
+  test_statementAfterInner() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2) {
+      print(2);
+    }
+    print(1);
+  }
+}
+''');
+    await assertNoAssistAt('if (2 == 2');
+  }
+
+  test_statementBeforeInner() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    print(1);
+    if (2 == 2) {
+      print(2);
+    }
+  }
+}
+''');
+    await assertNoAssistAt('if (2 == 2');
+  }
+
+  test_targetNotIf() async {
+    await resolveTestUnit('''
+main() {
+  print(0);
+}
+''');
+    await assertNoAssistAt('print');
+  }
+
+  test_targetWithElse() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1) {
+    if (2 == 2) {
+      print(0);
+    } else {
+      print(1);
+    }
+  }
+}
+''');
+    await assertNoAssistAt('if (2 == 2');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/join_variable_declaration_test.dart b/pkg/analysis_server/test/src/services/correction/assist/join_variable_declaration_test.dart
new file mode 100644
index 0000000..3216240
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/join_variable_declaration_test.dart
@@ -0,0 +1,220 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(JoinVariableDeclarationTest);
+  });
+}
+
+@reflectiveTest
+class JoinVariableDeclarationTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.JOIN_VARIABLE_DECLARATION;
+
+  test_onAssignment() async {
+    await resolveTestUnit('''
+main() {
+  var v;
+  v = 1;
+}
+''');
+    await assertHasAssistAt('v =', '''
+main() {
+  var v = 1;
+}
+''');
+  }
+
+  test_onAssignment_hasInitializer() async {
+    await resolveTestUnit('''
+main() {
+  var v = 1;
+  v = 2;
+}
+''');
+    await assertNoAssistAt('v = 2');
+  }
+
+  test_onAssignment_notAdjacent() async {
+    await resolveTestUnit('''
+main() {
+  var v;
+  var bar;
+  v = 1;
+}
+''');
+    await assertNoAssistAt('v = 1');
+  }
+
+  test_onAssignment_notAssignment() async {
+    await resolveTestUnit('''
+main() {
+  var v;
+  v += 1;
+}
+''');
+    await assertNoAssistAt('v += 1');
+  }
+
+  test_onAssignment_notDeclaration() async {
+    await resolveTestUnit('''
+main(var v) {
+  v = 1;
+}
+''');
+    await assertNoAssistAt('v = 1');
+  }
+
+  test_onAssignment_notLeftArgument() async {
+    await resolveTestUnit('''
+main() {
+  var v;
+  1 + v; // marker
+}
+''');
+    await assertNoAssistAt('v; // marker');
+  }
+
+  test_onAssignment_notOneVariable() async {
+    await resolveTestUnit('''
+main() {
+  var v, v2;
+  v = 1;
+}
+''');
+    await assertNoAssistAt('v = 1');
+  }
+
+  test_onAssignment_notResolved() async {
+    verifyNoTestUnitErrors = false;
+    await resolveTestUnit('''
+main() {
+  var v;
+  x = 1;
+}
+''');
+    await assertNoAssistAt('x = 1');
+  }
+
+  test_onAssignment_notSameBlock() async {
+    await resolveTestUnit('''
+main() {
+  var v;
+  {
+    v = 1;
+  }
+}
+''');
+    await assertNoAssistAt('v = 1');
+  }
+
+  test_onDeclaration_hasInitializer() async {
+    await resolveTestUnit('''
+main() {
+  var v = 1;
+  v = 2;
+}
+''');
+    await assertNoAssistAt('v = 1');
+  }
+
+  test_onDeclaration_lastStatement() async {
+    await resolveTestUnit('''
+main() {
+  if (true)
+    var v;
+}
+''');
+    await assertNoAssistAt('v;');
+  }
+
+  test_onDeclaration_nextNotAssignmentExpression() async {
+    await resolveTestUnit('''
+main() {
+  var v;
+  42;
+}
+''');
+    await assertNoAssistAt('v;');
+  }
+
+  test_onDeclaration_nextNotExpressionStatement() async {
+    await resolveTestUnit('''
+main() {
+  var v;
+  if (true) return;
+}
+''');
+    await assertNoAssistAt('v;');
+  }
+
+  test_onDeclaration_nextNotPureAssignment() async {
+    await resolveTestUnit('''
+main() {
+  var v;
+  v += 1;
+}
+''');
+    await assertNoAssistAt('v;');
+  }
+
+  test_onDeclaration_notOneVariable() async {
+    await resolveTestUnit('''
+main() {
+  var v, v2;
+  v = 1;
+}
+''');
+    await assertNoAssistAt('v, ');
+  }
+
+  test_onDeclaration_onName() async {
+    await resolveTestUnit('''
+main() {
+  var v;
+  v = 1;
+}
+''');
+    await assertHasAssistAt('v;', '''
+main() {
+  var v = 1;
+}
+''');
+  }
+
+  test_onDeclaration_onType() async {
+    await resolveTestUnit('''
+main() {
+  int v;
+  v = 1;
+}
+''');
+    await assertHasAssistAt('int v', '''
+main() {
+  int v = 1;
+}
+''');
+  }
+
+  test_onDeclaration_onVar() async {
+    await resolveTestUnit('''
+main() {
+  var v;
+  v = 1;
+}
+''');
+    await assertHasAssistAt('var v', '''
+main() {
+  var v = 1;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/remove_type_annotation_test.dart b/pkg/analysis_server/test/src/services/correction/assist/remove_type_annotation_test.dart
new file mode 100644
index 0000000..f57eee3
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/remove_type_annotation_test.dart
@@ -0,0 +1,147 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveTypeAnnotationTest);
+  });
+}
+
+@reflectiveTest
+class RemoveTypeAnnotationTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.REMOVE_TYPE_ANNOTATION;
+
+  test_classField() async {
+    await resolveTestUnit('''
+class A {
+  int v = 1;
+}
+''');
+    await assertHasAssistAt('v = ', '''
+class A {
+  var v = 1;
+}
+''');
+  }
+
+  test_classField_final() async {
+    await resolveTestUnit('''
+class A {
+  final int v = 1;
+}
+''');
+    await assertHasAssistAt('v = ', '''
+class A {
+  final v = 1;
+}
+''');
+  }
+
+  test_field_noInitializer() async {
+    await resolveTestUnit('''
+class A {
+  int v;
+}
+''');
+    await assertNoAssistAt('v;');
+  }
+
+  test_localVariable_noInitializer() async {
+    await resolveTestUnit('''
+main() {
+  int v;
+}
+''');
+    await assertNoAssistAt('v;');
+  }
+
+  test_localVariable_onInitializer() async {
+    await resolveTestUnit('''
+main() {
+  final int v = 1;
+}
+''');
+    await assertNoAssistAt('1;');
+  }
+
+  test_localVariable() async {
+    await resolveTestUnit('''
+main() {
+  int a = 1, b = 2;
+}
+''');
+    await assertHasAssistAt('int ', '''
+main() {
+  var a = 1, b = 2;
+}
+''');
+  }
+
+  test_localVariable_const() async {
+    await resolveTestUnit('''
+main() {
+  const int v = 1;
+}
+''');
+    await assertHasAssistAt('int ', '''
+main() {
+  const v = 1;
+}
+''');
+  }
+
+  test_localVariable_final() async {
+    await resolveTestUnit('''
+main() {
+  final int v = 1;
+}
+''');
+    await assertHasAssistAt('int ', '''
+main() {
+  final v = 1;
+}
+''');
+  }
+
+  test_topLevelVariable_noInitializer() async {
+    verifyNoTestUnitErrors = false;
+    await resolveTestUnit('''
+int v;
+''');
+    await assertNoAssistAt('v;');
+  }
+
+  test_topLevelVariable_syntheticName() async {
+    verifyNoTestUnitErrors = false;
+    await resolveTestUnit('''
+MyType
+''');
+    await assertNoAssistAt('MyType');
+  }
+
+  test_topLevelVariable() async {
+    await resolveTestUnit('''
+int V = 1;
+''');
+    await assertHasAssistAt('int ', '''
+var V = 1;
+''');
+  }
+
+  test_topLevelVariable_final() async {
+    await resolveTestUnit('''
+final int V = 1;
+''');
+    await assertHasAssistAt('int ', '''
+final V = 1;
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/replace_conditional_with_if_else_test.dart b/pkg/analysis_server/test/src/services/correction/assist/replace_conditional_with_if_else_test.dart
new file mode 100644
index 0000000..4ef97dd
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/replace_conditional_with_if_else_test.dart
@@ -0,0 +1,103 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ReplaceConditionalWithIfElseTest);
+  });
+}
+
+@reflectiveTest
+class ReplaceConditionalWithIfElseTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.REPLACE_CONDITIONAL_WITH_IF_ELSE;
+
+  test_assignment() async {
+    await resolveTestUnit('''
+main() {
+  var v;
+  v = true ? 111 : 222;
+}
+''');
+    // on conditional
+    await assertHasAssistAt('11 :', '''
+main() {
+  var v;
+  if (true) {
+    v = 111;
+  } else {
+    v = 222;
+  }
+}
+''');
+    // on variable
+    await assertHasAssistAt('v =', '''
+main() {
+  var v;
+  if (true) {
+    v = 111;
+  } else {
+    v = 222;
+  }
+}
+''');
+  }
+
+  test_noEnclosingStatement() async {
+    await resolveTestUnit('''
+var v = true ? 111 : 222;
+''');
+    await assertNoAssistAt('? 111');
+  }
+
+  test_notConditional() async {
+    await resolveTestUnit('''
+main() {
+  var v = 42;
+}
+''');
+    await assertNoAssistAt('v = 42');
+  }
+
+  test_return() async {
+    await resolveTestUnit('''
+main() {
+  return true ? 111 : 222;
+}
+''');
+    await assertHasAssistAt('return ', '''
+main() {
+  if (true) {
+    return 111;
+  } else {
+    return 222;
+  }
+}
+''');
+  }
+
+  test_variableDeclaration() async {
+    await resolveTestUnit('''
+main() {
+  int a = 1, vvv = true ? 111 : 222, b = 2;
+}
+''');
+    await assertHasAssistAt('11 :', '''
+main() {
+  int a = 1, vvv, b = 2;
+  if (true) {
+    vvv = 111;
+  } else {
+    vvv = 222;
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/replace_if_else_with_conditional_test.dart b/pkg/analysis_server/test/src/services/correction/assist/replace_if_else_with_conditional_test.dart
new file mode 100644
index 0000000..a21af08
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/replace_if_else_with_conditional_test.dart
@@ -0,0 +1,95 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ReplaceIfElseWithConditionalTest);
+  });
+}
+
+@reflectiveTest
+class ReplaceIfElseWithConditionalTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.REPLACE_IF_ELSE_WITH_CONDITIONAL;
+
+  test_assignment() async {
+    await resolveTestUnit('''
+main() {
+  int vvv;
+  if (true) {
+    vvv = 111;
+  } else {
+    vvv = 222;
+  }
+}
+''');
+    await assertHasAssistAt('if (true)', '''
+main() {
+  int vvv;
+  vvv = true ? 111 : 222;
+}
+''');
+  }
+
+  test_expressionVsReturn() async {
+    await resolveTestUnit('''
+main() {
+  if (true) {
+    print(42);
+  } else {
+    return;
+  }
+}
+''');
+    await assertNoAssistAt('else');
+  }
+
+  test_notIfStatement() async {
+    await resolveTestUnit('''
+main() {
+  print(0);
+}
+''');
+    await assertNoAssistAt('print');
+  }
+
+  test_notSingleStatement() async {
+    await resolveTestUnit('''
+main() {
+  int vvv;
+  if (true) {
+    print(0);
+    vvv = 111;
+  } else {
+    print(0);
+    vvv = 222;
+  }
+}
+''');
+    await assertNoAssistAt('if (true)');
+  }
+
+  test_return() async {
+    await resolveTestUnit('''
+main() {
+  if (true) {
+    return 111;
+  } else {
+    return 222;
+  }
+}
+''');
+    await assertHasAssistAt('if (true)', '''
+main() {
+  return true ? 111 : 222;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/split_and_condition_test.dart b/pkg/analysis_server/test/src/services/correction/assist/split_and_condition_test.dart
new file mode 100644
index 0000000..31127f0
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/split_and_condition_test.dart
@@ -0,0 +1,158 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(SplitAndConditionTest);
+  });
+}
+
+@reflectiveTest
+class SplitAndConditionTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.SPLIT_AND_CONDITION;
+
+  test_hasElse() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1 && 2 == 2) {
+    print(1);
+  } else {
+    print(2);
+  }
+}
+''');
+    await assertNoAssistAt('&& 2');
+  }
+
+  test_innerAndExpression() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1 && 2 == 2 && 3 == 3) {
+    print(0);
+  }
+}
+''');
+    await assertHasAssistAt('&& 2 == 2', '''
+main() {
+  if (1 == 1) {
+    if (2 == 2 && 3 == 3) {
+      print(0);
+    }
+  }
+}
+''');
+  }
+
+  test_notAnd() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1 || 2 == 2) {
+    print(0);
+  }
+}
+''');
+    await assertNoAssistAt('|| 2');
+  }
+
+  test_notOnOperator() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1 && 2 == 2) {
+    print(0);
+  }
+  print(3 == 3 && 4 == 4);
+}
+''');
+    await assertNoAssistAt('main() {');
+  }
+
+  test_notPartOfIf() async {
+    await resolveTestUnit('''
+main() {
+  print(1 == 1 && 2 == 2);
+}
+''');
+    await assertNoAssistAt('&& 2');
+  }
+
+  test_notTopLevelAnd() async {
+    await resolveTestUnit('''
+main() {
+  if (true || (1 == 1 && 2 == 2)) {
+    print(0);
+  }
+  if (true && (3 == 3 && 4 == 4)) {
+    print(0);
+  }
+}
+''');
+    await assertNoAssistAt('&& 2');
+    await assertNoAssistAt('&& 4');
+  }
+
+  test_selectionTooLarge() async {
+    await resolveTestUnit('''
+main() {
+  if (1 == 1
+// start
+&& 2 
+// end
+== 2
+) {
+    print(0);
+  }
+  print(3 == 3 && 4 == 4);
+}
+''');
+    await assertNoAssist();
+  }
+
+  test_thenBlock() async {
+    await resolveTestUnit('''
+main() {
+  if (true && false) {
+    print(0);
+    if (3 == 3) {
+      print(1);
+    }
+  }
+}
+''');
+    await assertHasAssistAt('&& false', '''
+main() {
+  if (true) {
+    if (false) {
+      print(0);
+      if (3 == 3) {
+        print(1);
+      }
+    }
+  }
+}
+''');
+  }
+
+  test_thenStatement() async {
+    await resolveTestUnit('''
+main() {
+  if (true && false)
+    print(0);
+}
+''');
+    await assertHasAssistAt('&& false', '''
+main() {
+  if (true)
+    if (false)
+      print(0);
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/split_variable_declaration_test.dart b/pkg/analysis_server/test/src/services/correction/assist/split_variable_declaration_test.dart
new file mode 100644
index 0000000..2d88afc
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/split_variable_declaration_test.dart
@@ -0,0 +1,87 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(SplitVariableDeclarationTest);
+  });
+}
+
+@reflectiveTest
+class SplitVariableDeclarationTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.SPLIT_VARIABLE_DECLARATION;
+
+  test_notOneVariable() async {
+    await resolveTestUnit('''
+main() {
+  var v = 1, v2;
+}
+''');
+    await assertNoAssistAt('v = 1');
+  }
+
+  test_onName() async {
+    await resolveTestUnit('''
+main() {
+  var v = 1;
+}
+''');
+    await assertHasAssistAt('v =', '''
+main() {
+  var v;
+  v = 1;
+}
+''');
+  }
+
+  test_onType() async {
+    await resolveTestUnit('''
+main() {
+  int v = 1;
+}
+''');
+    await assertHasAssistAt('int ', '''
+main() {
+  int v;
+  v = 1;
+}
+''');
+  }
+
+  @failingTest
+  test_onType_prefixedByComment() async {
+    await resolveTestUnit('''
+main() {
+  /*comment*/int v = 1;
+}
+''');
+    await assertHasAssistAt('int ', '''
+main() {
+  /*comment*/int v;
+  v = 1;
+}
+''');
+  }
+
+  test_onVar() async {
+    await resolveTestUnit('''
+main() {
+  var v = 1;
+}
+''');
+    await assertHasAssistAt('var ', '''
+main() {
+  var v;
+  v = 1;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/surround_with_block_test.dart b/pkg/analysis_server/test/src/services/correction/assist/surround_with_block_test.dart
new file mode 100644
index 0000000..f4647be
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/surround_with_block_test.dart
@@ -0,0 +1,42 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(SurroundWithBlockTest);
+  });
+}
+
+@reflectiveTest
+class SurroundWithBlockTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.SURROUND_WITH_BLOCK;
+
+  test_twoStatements() async {
+    await resolveTestUnit('''
+main() {
+// start
+  print(0);
+  print(1);
+// end
+}
+''');
+    await assertHasAssist('''
+main() {
+// start
+  {
+    print(0);
+    print(1);
+  }
+// end
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/surround_with_do_while_test.dart b/pkg/analysis_server/test/src/services/correction/assist/surround_with_do_while_test.dart
new file mode 100644
index 0000000..96fbd14
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/surround_with_do_while_test.dart
@@ -0,0 +1,44 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(SurroundWithDoWhileTest);
+  });
+}
+
+@reflectiveTest
+class SurroundWithDoWhileTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.SURROUND_WITH_DO_WHILE;
+
+  test_twoStatements() async {
+    await resolveTestUnit('''
+main() {
+// start
+  print(0);
+  print(1);
+// end
+}
+''');
+    await assertHasAssist('''
+main() {
+// start
+  do {
+    print(0);
+    print(1);
+  } while (condition);
+// end
+}
+''');
+    assertLinkedGroup(0, ['condition);']);
+    assertExitPosition(after: 'condition);');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/surround_with_for_in_test.dart b/pkg/analysis_server/test/src/services/correction/assist/surround_with_for_in_test.dart
new file mode 100644
index 0000000..c775e1c
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/surround_with_for_in_test.dart
@@ -0,0 +1,45 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(SurroundWithForInTest);
+  });
+}
+
+@reflectiveTest
+class SurroundWithForInTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.SURROUND_WITH_FOR_IN;
+
+  test_twoStatements() async {
+    await resolveTestUnit('''
+main() {
+// start
+  print(0);
+  print(1);
+// end
+}
+''');
+    await assertHasAssist('''
+main() {
+// start
+  for (var item in iterable) {
+    print(0);
+    print(1);
+  }
+// end
+}
+''');
+    assertLinkedGroup(0, ['item']);
+    assertLinkedGroup(1, ['iterable']);
+    assertExitPosition(after: '  }');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/surround_with_for_test.dart b/pkg/analysis_server/test/src/services/correction/assist/surround_with_for_test.dart
new file mode 100644
index 0000000..770684c
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/surround_with_for_test.dart
@@ -0,0 +1,47 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(SurroundWithForTest);
+  });
+}
+
+@reflectiveTest
+class SurroundWithForTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.SURROUND_WITH_FOR;
+
+  test_twoStatements() async {
+    await resolveTestUnit('''
+main() {
+// start
+  print(0);
+  print(1);
+// end
+}
+''');
+    await assertHasAssist('''
+main() {
+// start
+  for (var v = init; condition; increment) {
+    print(0);
+    print(1);
+  }
+// end
+}
+''');
+    assertLinkedGroup(0, ['v =']);
+    assertLinkedGroup(1, ['init;']);
+    assertLinkedGroup(2, ['condition;']);
+    assertLinkedGroup(3, ['increment']);
+    assertExitPosition(after: '  }');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/surround_with_if_test.dart b/pkg/analysis_server/test/src/services/correction/assist/surround_with_if_test.dart
new file mode 100644
index 0000000..de8df15
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/surround_with_if_test.dart
@@ -0,0 +1,44 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(SurroundWithIfTest);
+  });
+}
+
+@reflectiveTest
+class SurroundWithIfTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.SURROUND_WITH_IF;
+
+  test_twoStatements() async {
+    await resolveTestUnit('''
+main() {
+// start
+  print(0);
+  print(1);
+// end
+}
+''');
+    await assertHasAssist('''
+main() {
+// start
+  if (condition) {
+    print(0);
+    print(1);
+  }
+// end
+}
+''');
+    assertLinkedGroup(0, ['condition']);
+    assertExitPosition(after: '  }');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/surround_with_try_catch_test.dart b/pkg/analysis_server/test/src/services/correction/assist/surround_with_try_catch_test.dart
new file mode 100644
index 0000000..f39a5e0
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/surround_with_try_catch_test.dart
@@ -0,0 +1,48 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(SurroundWithTryCatchTest);
+  });
+}
+
+@reflectiveTest
+class SurroundWithTryCatchTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.SURROUND_WITH_TRY_CATCH;
+
+  test_twoStatements() async {
+    await resolveTestUnit('''
+main() {
+// start
+  print(0);
+  print(1);
+// end
+}
+''');
+    await assertHasAssist('''
+main() {
+// start
+  try {
+    print(0);
+    print(1);
+  } on Exception catch (e) {
+    // TODO
+  }
+// end
+}
+''');
+    assertLinkedGroup(0, ['Exception']);
+    assertLinkedGroup(1, ['e) {']);
+    assertLinkedGroup(2, ['// TODO']);
+    assertExitPosition(after: '// TODO');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/surround_with_try_finally_test.dart b/pkg/analysis_server/test/src/services/correction/assist/surround_with_try_finally_test.dart
new file mode 100644
index 0000000..7e9267c
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/surround_with_try_finally_test.dart
@@ -0,0 +1,46 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(SurroundWithTryFinallyTest);
+  });
+}
+
+@reflectiveTest
+class SurroundWithTryFinallyTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.SURROUND_WITH_TRY_FINALLY;
+
+  test_twoStatements() async {
+    await resolveTestUnit('''
+main() {
+// start
+  print(0);
+  print(1);
+// end
+}
+''');
+    await assertHasAssist('''
+main() {
+// start
+  try {
+    print(0);
+    print(1);
+  } finally {
+    // TODO
+  }
+// end
+}
+''');
+    assertLinkedGroup(0, ['// TODO']);
+    assertExitPosition(after: '// TODO');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/surround_with_while_test.dart b/pkg/analysis_server/test/src/services/correction/assist/surround_with_while_test.dart
new file mode 100644
index 0000000..939e211
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/surround_with_while_test.dart
@@ -0,0 +1,44 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/assist.dart';
+import 'package:analyzer_plugin/utilities/assist/assist.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(SurroundWithWhileTest);
+  });
+}
+
+@reflectiveTest
+class SurroundWithWhileTest extends AssistProcessorTest {
+  @override
+  AssistKind get kind => DartAssistKind.SURROUND_WITH_WHILE;
+
+  test_twoStatements() async {
+    await resolveTestUnit('''
+main() {
+// start
+  print(0);
+  print(1);
+// end
+}
+''');
+    await assertHasAssist('''
+main() {
+// start
+  while (condition) {
+    print(0);
+    print(1);
+  }
+// end
+}
+''');
+    assertLinkedGroup(0, ['condition']);
+    assertExitPosition(after: '  }');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/assist/test_all.dart b/pkg/analysis_server/test/src/services/correction/assist/test_all.dart
new file mode 100644
index 0000000..be58fce
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/assist/test_all.dart
@@ -0,0 +1,129 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'add_type_annotation_test.dart' as add_type_annotation;
+import 'assign_to_local_variable_test.dart' as assign_to_local_variable;
+import 'convert_class_to_mixin_test.dart' as convert_class_to_mixin;
+import 'convert_documentation_into_block_test.dart'
+    as convert_documentation_into_block;
+import 'convert_documentation_into_line_test.dart'
+    as convert_documentation_into_line;
+import 'convert_into_async_body_test.dart' as convert_into_async_body;
+import 'convert_into_block_body_test.dart' as convert_into_block_body;
+import 'convert_into_expression_body_test.dart' as convert_into_expression_body;
+import 'convert_into_final_field_test.dart' as convert_into_final_field;
+import 'convert_into_for_index_test.dart' as convert_into_for_index;
+import 'convert_into_generic_function_syntax_test.dart'
+    as convert_into_generic_function_syntax;
+import 'convert_into_getter_test.dart' as convert_into_getter;
+import 'convert_into_is_not_empty_test.dart' as convert_into_is_not_empty;
+import 'convert_into_is_not_test.dart' as convert_into_is_not;
+import 'convert_part_of_to_uri_test.dart' as convert_part_of_to_uri;
+import 'convert_to_double_quoted_string_test.dart'
+    as convert_to_double_quoted_string;
+import 'convert_to_field_parameter_test.dart' as convert_to_field_parameter;
+import 'convert_to_int_literal_test.dart' as convert_to_int_literal;
+import 'convert_to_normal_parameter_test.dart' as convert_to_normal_parameter;
+import 'convert_to_single_quoted_string_test.dart'
+    as convert_to_single_quoted_string;
+import 'encapsulate_field_test.dart' as encapsulate_field;
+import 'exchange_operands_test.dart' as exchange_operands;
+import 'flutter_convert_to_children_test.dart' as flutter_convert_to_children;
+import 'flutter_convert_to_stateful_widget_test.dart'
+    as flutter_convert_to_stateful_widget;
+import 'flutter_move_down_test.dart' as flutter_move_down;
+import 'flutter_move_up_test.dart' as flutter_move_up;
+import 'flutter_remove_widget_test.dart' as flutter_remove_widget;
+import 'flutter_swap_with_child_test.dart' as flutter_swap_with_child;
+import 'flutter_swap_with_parent_test.dart' as flutter_swap_with_parent;
+import 'flutter_wrap_center_test.dart' as flutter_wrap_center;
+import 'flutter_wrap_column_test.dart' as flutter_wrap_column;
+import 'flutter_wrap_container_test.dart' as flutter_wrap_container;
+import 'flutter_wrap_generic_test.dart' as flutter_wrap_generic;
+import 'flutter_wrap_padding_test.dart' as flutter_wrap_padding;
+import 'flutter_wrap_row_test.dart' as flutter_wrap_row;
+import 'flutter_wrap_stream_builder_test.dart' as flutter_wrap_stream_builder;
+import 'import_add_show_test.dart' as import_add_show;
+import 'introduce_local_cast_type_test.dart' as introduce_local_cast_type;
+import 'invert_if_statement_test.dart' as invert_if_statement;
+import 'join_if_with_inner_test.dart' as join_if_with_inner;
+import 'join_if_with_outer_test.dart' as join_if_with_outer;
+import 'join_variable_declaration_test.dart' as join_variable_declaration;
+import 'remove_type_annotation_test.dart' as remove_type_annotation;
+import 'replace_conditional_with_if_else_test.dart'
+    as replace_conditional_with_if_else;
+import 'replace_if_else_with_conditional_test.dart'
+    as replace_if_else_with_conditional;
+import 'split_and_condition_test.dart' as split_and_condition;
+import 'split_variable_declaration_test.dart' as split_variable_declaration;
+import 'surround_with_block_test.dart' as surround_with_block;
+import 'surround_with_do_while_test.dart' as surround_with_do_while;
+import 'surround_with_for_in_test.dart' as surround_with_for_in;
+import 'surround_with_for_test.dart' as surround_with_for;
+import 'surround_with_if_test.dart' as surround_with_if;
+import 'surround_with_try_catch_test.dart' as surround_with_try_catch;
+import 'surround_with_try_finally_test.dart' as surround_with_try_finally;
+import 'surround_with_while_test.dart' as surround_with_while;
+
+main() {
+  defineReflectiveSuite(() {
+    add_type_annotation.main();
+    assign_to_local_variable.main();
+    convert_class_to_mixin.main();
+    convert_documentation_into_block.main();
+    convert_documentation_into_line.main();
+    convert_into_async_body.main();
+    convert_into_block_body.main();
+    convert_into_expression_body.main();
+    convert_into_final_field.main();
+    convert_into_for_index.main();
+    convert_into_generic_function_syntax.main();
+    convert_into_getter.main();
+    convert_into_is_not.main();
+    convert_into_is_not_empty.main();
+    convert_part_of_to_uri.main();
+    convert_to_double_quoted_string.main();
+    convert_to_field_parameter.main();
+    convert_to_int_literal.main();
+    convert_to_normal_parameter.main();
+    convert_to_single_quoted_string.main();
+    encapsulate_field.main();
+    exchange_operands.main();
+    flutter_convert_to_children.main();
+    flutter_convert_to_stateful_widget.main();
+    flutter_move_down.main();
+    flutter_move_up.main();
+    flutter_remove_widget.main();
+    flutter_swap_with_child.main();
+    flutter_swap_with_parent.main();
+    flutter_wrap_center.main();
+    flutter_wrap_column.main();
+    flutter_wrap_container.main();
+    flutter_wrap_generic.main();
+    flutter_wrap_padding.main();
+    flutter_wrap_row.main();
+    flutter_wrap_stream_builder.main();
+    import_add_show.main();
+    introduce_local_cast_type.main();
+    invert_if_statement.main();
+    join_if_with_inner.main();
+    join_if_with_outer.main();
+    join_variable_declaration.main();
+    remove_type_annotation.main();
+    replace_conditional_with_if_else.main();
+    replace_if_else_with_conditional.main();
+    split_and_condition.main();
+    split_variable_declaration.main();
+    surround_with_block.main();
+    surround_with_do_while.main();
+    surround_with_for.main();
+    surround_with_for_in.main();
+    surround_with_if.main();
+    surround_with_try_catch.main();
+    surround_with_try_finally.main();
+    surround_with_while.main();
+  }, name: 'assist');
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/add_async_test.dart b/pkg/analysis_server/test/src/services/correction/fix/add_async_test.dart
new file mode 100644
index 0000000..49938b4
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/add_async_test.dart
@@ -0,0 +1,199 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer/error/error.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AddAsyncTest);
+  });
+}
+
+@reflectiveTest
+class AddAsyncTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.ADD_ASYNC;
+
+  test_asyncFor() async {
+    await resolveTestUnit('''
+import 'dart:async';
+void main(Stream<String> names) {
+  await for (String name in names) {
+    print(name);
+  }
+}
+''');
+    await assertHasFix('''
+import 'dart:async';
+Future main(Stream<String> names) async {
+  await for (String name in names) {
+    print(name);
+  }
+}
+''');
+  }
+
+  test_blockFunctionBody_function() async {
+    await resolveTestUnit('''
+foo() {}
+main() {
+  await foo();
+}
+''');
+    await assertHasFix('''
+foo() {}
+main() async {
+  await foo();
+}
+''', errorFilter: (AnalysisError error) {
+      return error.errorCode ==
+          CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPE;
+    });
+  }
+
+  test_blockFunctionBody_getter() async {
+    await resolveTestUnit('''
+int get foo => null;
+int f() {
+  await foo;
+  return 1;
+}
+''');
+    await assertHasFix('''
+int get foo => null;
+Future<int> f() async {
+  await foo;
+  return 1;
+}
+''', errorFilter: (AnalysisError error) {
+      return error.errorCode ==
+          CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPE;
+    });
+  }
+
+  test_closure() async {
+    await resolveTestUnit('''
+import 'dart:async';
+
+void takeFutureCallback(Future callback()) {}
+
+void doStuff() => takeFutureCallback(() => await 1);
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+void takeFutureCallback(Future callback()) {}
+
+void doStuff() => takeFutureCallback(() async => await 1);
+''', errorFilter: (AnalysisError error) {
+      return error.errorCode == StaticWarningCode.UNDEFINED_IDENTIFIER_AWAIT;
+    });
+  }
+
+  test_expressionFunctionBody() async {
+    await resolveTestUnit('''
+foo() {}
+main() => await foo();
+''');
+    await assertHasFix('''
+foo() {}
+main() async => await foo();
+''');
+  }
+
+  test_nullFunctionBody() async {
+    await resolveTestUnit('''
+var F = await;
+''');
+    await assertNoFix();
+  }
+
+  test_returnFuture_alreadyFuture() async {
+    await resolveTestUnit('''
+import 'dart:async';
+foo() {}
+Future<int> main() {
+  await foo();
+  return 42;
+}
+''');
+    await assertHasFix('''
+import 'dart:async';
+foo() {}
+Future<int> main() async {
+  await foo();
+  return 42;
+}
+''', errorFilter: (AnalysisError error) {
+      return error.errorCode ==
+          CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPE;
+    });
+  }
+
+  test_returnFuture_dynamic() async {
+    await resolveTestUnit('''
+foo() {}
+dynamic main() {
+  await foo();
+  return 42;
+}
+''');
+    await assertHasFix('''
+foo() {}
+dynamic main() async {
+  await foo();
+  return 42;
+}
+''', errorFilter: (AnalysisError error) {
+      return error.errorCode ==
+          CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPE;
+    });
+  }
+
+  test_returnFuture_nonFuture() async {
+    await resolveTestUnit('''
+foo() {}
+int main() {
+  await foo();
+  return 42;
+}
+''');
+    await assertHasFix('''
+foo() {}
+Future<int> main() async {
+  await foo();
+  return 42;
+}
+''', errorFilter: (AnalysisError error) {
+      return error.errorCode ==
+          CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPE;
+    });
+  }
+
+  test_returnFuture_noType() async {
+    await resolveTestUnit('''
+foo() {}
+main() {
+  await foo();
+  return 42;
+}
+''');
+    await assertHasFix('''
+foo() {}
+main() async {
+  await foo();
+  return 42;
+}
+''', errorFilter: (AnalysisError error) {
+      return error.errorCode ==
+          CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPE;
+    });
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/add_explicit_cast_test.dart b/pkg/analysis_server/test/src/services/correction/fix/add_explicit_cast_test.dart
new file mode 100644
index 0000000..e0ff288
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/add_explicit_cast_test.dart
@@ -0,0 +1,463 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AddExplicitCastTest);
+  });
+}
+
+@reflectiveTest
+class AddExplicitCastTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.ADD_EXPLICIT_CAST;
+
+  test_as() async {
+    await resolveTestUnit('''
+f(A a) {
+  C c = a as B;
+  print(c);
+}
+class A {}
+class B {}
+class C {}
+''');
+    await assertNoFix();
+  }
+
+  test_assignment_general() async {
+    await resolveTestUnit('''
+f(A a) {
+  B b;
+  b = a;
+  print(b);
+}
+class A {}
+class B {}
+''');
+    await assertHasFix('''
+f(A a) {
+  B b;
+  b = a as B;
+  print(b);
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_assignment_general_all() async {
+    await resolveTestUnit('''
+f(A a) {
+  B b, b2;
+  b = a;
+  b2 = a;
+}
+class A {}
+class B {}
+''');
+    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT, '''
+f(A a) {
+  B b, b2;
+  b = a as B;
+  b2 = a as B;
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_assignment_list() async {
+    await resolveTestUnit('''
+f(List<A> a) {
+  List<B> b;
+  b = a.where((e) => e is B).toList();
+  print(b);
+}
+class A {}
+class B {}
+''');
+    await assertHasFix('''
+f(List<A> a) {
+  List<B> b;
+  b = a.where((e) => e is B).cast<B>().toList();
+  print(b);
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_assignment_list_all() async {
+    await resolveTestUnit('''
+f(List<A> a) {
+  List<B> b, b2;
+  b = a.where((e) => e is B).toList();
+  b2 = a.where((e) => e is B).toList();
+}
+class A {}
+class B {}
+''');
+    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT, '''
+f(List<A> a) {
+  List<B> b, b2;
+  b = a.where((e) => e is B).cast<B>().toList();
+  b2 = a.where((e) => e is B).cast<B>().toList();
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_assignment_map() async {
+    await resolveTestUnit('''
+f(Map<A, B> a) {
+  Map<B, A> b;
+  b = a;
+  print(b);
+}
+class A {}
+class B {}
+''');
+    await assertHasFix('''
+f(Map<A, B> a) {
+  Map<B, A> b;
+  b = a.cast<B, A>();
+  print(b);
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_assignment_map_all() async {
+    await resolveTestUnit('''
+f(Map<A, B> a) {
+  Map<B, A> b, b2;
+  b = a;
+  b2 = a;
+}
+class A {}
+class B {}
+''');
+    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT, '''
+f(Map<A, B> a) {
+  Map<B, A> b, b2;
+  b = a.cast<B, A>();
+  b2 = a.cast<B, A>();
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_assignment_needsParens() async {
+    await resolveTestUnit('''
+f(A a) {
+  B b;
+  b = a..m();
+  print(b);
+}
+class A {
+  int m() => 0;
+}
+class B {}
+''');
+    await assertHasFix('''
+f(A a) {
+  B b;
+  b = (a..m()) as B;
+  print(b);
+}
+class A {
+  int m() => 0;
+}
+class B {}
+''');
+  }
+
+  test_assignment_needsParens_all() async {
+    await resolveTestUnit('''
+f(A a) {
+  B b, b2;
+  b = a..m();
+  b2 = a..m();
+}
+class A {
+  int m() => 0;
+}
+class B {}
+''');
+    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT, '''
+f(A a) {
+  B b, b2;
+  b = (a..m()) as B;
+  b2 = (a..m()) as B;
+}
+class A {
+  int m() => 0;
+}
+class B {}
+''');
+  }
+
+  test_assignment_set() async {
+    await resolveTestUnit('''
+f(Set<A> a) {
+  Set<B> b;
+  b = a;
+  print(b);
+}
+class A {}
+class B {}
+''');
+    await assertHasFix('''
+f(Set<A> a) {
+  Set<B> b;
+  b = a.cast<B>();
+  print(b);
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_assignment_set_all() async {
+    await resolveTestUnit('''
+f(Set<A> a) {
+  Set<B> b, b2;
+  b = a;
+  b2 = a;
+}
+class A {}
+class B {}
+''');
+    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT, '''
+f(Set<A> a) {
+  Set<B> b, b2;
+  b = a.cast<B>();
+  b2 = a.cast<B>();
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_cast() async {
+    await resolveTestUnit('''
+f(List<A> a) {
+  List<B> b = a.cast<A>();
+  print(b);
+}
+class A {}
+class B {}
+''');
+    await assertNoFix();
+  }
+
+  test_declaration_general() async {
+    await resolveTestUnit('''
+f(A a) {
+  B b = a;
+  print(b);
+}
+class A {}
+class B {}
+''');
+    await assertHasFix('''
+f(A a) {
+  B b = a as B;
+  print(b);
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_declaration_general_all() async {
+    await resolveTestUnit('''
+f(A a) {
+  B b = a;
+  B b2 = a;
+}
+class A {}
+class B {}
+''');
+    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT, '''
+f(A a) {
+  B b = a as B;
+  B b2 = a as B;
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_declaration_list() async {
+    await resolveTestUnit('''
+f(List<A> a) {
+  List<B> b = a.where((e) => e is B).toList();
+  print(b);
+}
+class A {}
+class B {}
+''');
+    await assertHasFix('''
+f(List<A> a) {
+  List<B> b = a.where((e) => e is B).cast<B>().toList();
+  print(b);
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_declaration_list_all() async {
+    await resolveTestUnit('''
+f(List<A> a) {
+  List<B> b = a.where((e) => e is B).toList();
+  List<B> b2 = a.where((e) => e is B).toList();
+}
+class A {}
+class B {}
+''');
+    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT, '''
+f(List<A> a) {
+  List<B> b = a.where((e) => e is B).cast<B>().toList();
+  List<B> b2 = a.where((e) => e is B).cast<B>().toList();
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_declaration_map() async {
+    await resolveTestUnit('''
+f(Map<A, B> a) {
+  Map<B, A> b = a;
+  print(b);
+}
+class A {}
+class B {}
+''');
+    await assertHasFix('''
+f(Map<A, B> a) {
+  Map<B, A> b = a.cast<B, A>();
+  print(b);
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_declaration_map_all() async {
+    await resolveTestUnit('''
+f(Map<A, B> a) {
+  Map<B, A> b = a;
+  Map<B, A> b2 = a;
+}
+class A {}
+class B {}
+''');
+    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT, '''
+f(Map<A, B> a) {
+  Map<B, A> b = a.cast<B, A>();
+  Map<B, A> b2 = a.cast<B, A>();
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_declaration_needsParens() async {
+    await resolveTestUnit('''
+f(A a) {
+  B b = a..m();
+  print(b);
+}
+class A {
+  int m() => 0;
+}
+class B {}
+''');
+    await assertHasFix('''
+f(A a) {
+  B b = (a..m()) as B;
+  print(b);
+}
+class A {
+  int m() => 0;
+}
+class B {}
+''');
+  }
+
+  test_declaration_needsParens_all() async {
+    await resolveTestUnit('''
+f(A a) {
+  B b = a..m();
+  B b2 = a..m();
+}
+class A {
+  int m() => 0;
+}
+class B {}
+''');
+    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT, '''
+f(A a) {
+  B b = (a..m()) as B;
+  B b2 = (a..m()) as B;
+}
+class A {
+  int m() => 0;
+}
+class B {}
+''');
+  }
+
+  test_declaration_set() async {
+    await resolveTestUnit('''
+f(Set<A> a) {
+  Set<B> b = a;
+  print(b);
+}
+class A {}
+class B {}
+''');
+    await assertHasFix('''
+f(Set<A> a) {
+  Set<B> b = a.cast<B>();
+  print(b);
+}
+class A {}
+class B {}
+''');
+  }
+
+  test_declaration_set_all() async {
+    await resolveTestUnit('''
+f(Set<A> a) {
+  Set<B> b = a;
+  Set<B> b2 = a;
+}
+class A {}
+class B {}
+''');
+    await assertHasFixAllFix(StaticTypeWarningCode.INVALID_ASSIGNMENT, '''
+f(Set<A> a) {
+  Set<B> b = a.cast<B>();
+  Set<B> b2 = a.cast<B>();
+}
+class A {}
+class B {}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/add_field_formal_parameters_test.dart b/pkg/analysis_server/test/src/services/correction/fix/add_field_formal_parameters_test.dart
new file mode 100644
index 0000000..172aee9
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/add_field_formal_parameters_test.dart
@@ -0,0 +1,123 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AddFieldFormalParametersTest);
+  });
+}
+
+@reflectiveTest
+class AddFieldFormalParametersTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.ADD_FIELD_FORMAL_PARAMETERS;
+
+  test_flutter() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+
+class MyWidget extends StatelessWidget {
+  final int a;
+  final int b;
+  final int c;
+
+  MyWidget({Key key, this.a}) : super(key: key);
+}
+''');
+    await assertHasFix('''
+import 'package:flutter/widgets.dart';
+
+class MyWidget extends StatelessWidget {
+  final int a;
+  final int b;
+  final int c;
+
+  MyWidget({Key key, this.a, this.b, this.c}) : super(key: key);
+}
+''');
+  }
+
+  test_hasRequiredParameter() async {
+    await resolveTestUnit('''
+class Test {
+  final int a;
+  final int b;
+  final int c;
+  Test(this.a);
+}
+''');
+    await assertHasFix('''
+class Test {
+  final int a;
+  final int b;
+  final int c;
+  Test(this.a, this.b, this.c);
+}
+''');
+  }
+
+  test_noParameters() async {
+    await resolveTestUnit('''
+class Test {
+  final int a;
+  final int b;
+  final int c;
+  Test();
+}
+''');
+    await assertHasFix('''
+class Test {
+  final int a;
+  final int b;
+  final int c;
+  Test(this.a, this.b, this.c);
+}
+''');
+  }
+
+  test_noRequiredParameter() async {
+    await resolveTestUnit('''
+class Test {
+  final int a;
+  final int b;
+  final int c;
+  Test([this.c]);
+}
+''');
+    await assertHasFix('''
+class Test {
+  final int a;
+  final int b;
+  final int c;
+  Test(this.a, this.b, [this.c]);
+}
+''');
+  }
+
+  test_notAllFinal() async {
+    await resolveTestUnit('''
+class Test {
+  final int a;
+  int b;
+  final int c;
+  Test();
+}
+''');
+    await assertHasFix('''
+class Test {
+  final int a;
+  int b;
+  final int c;
+  Test(this.a, this.c);
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/add_missing_parameter_named_test.dart b/pkg/analysis_server/test/src/services/correction/fix/add_missing_parameter_named_test.dart
new file mode 100644
index 0000000..0378f7e
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/add_missing_parameter_named_test.dart
@@ -0,0 +1,232 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AddMissingParameterNamedTest);
+  });
+}
+
+@reflectiveTest
+class AddMissingParameterNamedTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.ADD_MISSING_PARAMETER_NAMED;
+
+  test_constructor_hasNamed() async {
+    await resolveTestUnit('''
+class A {
+  A(int a, {int b}) {}
+}
+
+main() {
+  new A(1, b: 2, named: 3.0);
+}
+''');
+    await assertHasFix('''
+class A {
+  A(int a, {int b, double named}) {}
+}
+
+main() {
+  new A(1, b: 2, named: 3.0);
+}
+''');
+  }
+
+  test_constructor_hasRequired() async {
+    await resolveTestUnit('''
+class A {
+  A(int a) {}
+}
+
+main() {
+  new A(1, named: 2.0);
+}
+''');
+    await assertHasFix('''
+class A {
+  A(int a, {double named}) {}
+}
+
+main() {
+  new A(1, named: 2.0);
+}
+''');
+  }
+
+  test_constructor_noParameters() async {
+    await resolveTestUnit('''
+class A {
+  A() {}
+}
+
+main() {
+  new A(named: 42);
+}
+''');
+    await assertHasFix('''
+class A {
+  A({int named}) {}
+}
+
+main() {
+  new A(named: 42);
+}
+''');
+  }
+
+  test_constructor_noParameters_named() async {
+    await resolveTestUnit('''
+class A {
+  A.aaa() {}
+}
+
+main() {
+  new A.aaa(named: 42);
+}
+''');
+    await assertHasFix('''
+class A {
+  A.aaa({int named}) {}
+}
+
+main() {
+  new A.aaa(named: 42);
+}
+''');
+  }
+
+  test_function_hasNamed() async {
+    await resolveTestUnit('''
+test(int a, {int b: 0}) {}
+
+main() {
+  test(1, b: 2, named: 3.0);
+}
+''');
+    await assertHasFix('''
+test(int a, {int b: 0, double named}) {}
+
+main() {
+  test(1, b: 2, named: 3.0);
+}
+''');
+  }
+
+  test_function_hasRequired() async {
+    await resolveTestUnit('''
+test(int a) {}
+
+main() {
+  test(1, named: 2.0);
+}
+''');
+    await assertHasFix('''
+test(int a, {double named}) {}
+
+main() {
+  test(1, named: 2.0);
+}
+''');
+  }
+
+  test_function_noParameters() async {
+    await resolveTestUnit('''
+test() {}
+
+main() {
+  test(named: 42);
+}
+''');
+    await assertHasFix('''
+test({int named}) {}
+
+main() {
+  test(named: 42);
+}
+''');
+  }
+
+  test_method_hasNamed() async {
+    await resolveTestUnit('''
+class A {
+  test(int a, {int b: 0}) {}
+
+  main() {
+    test(1, b: 2, named: 3.0);
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  test(int a, {int b: 0, double named}) {}
+
+  main() {
+    test(1, b: 2, named: 3.0);
+  }
+}
+''');
+  }
+
+  test_method_hasOptionalPositional() async {
+    await resolveTestUnit('''
+class A {
+  test(int a, [int b]) {}
+
+  main() {
+    test(1, 2, named: 3.0);
+  }
+}
+''');
+    await assertNoFix();
+  }
+
+  test_method_hasRequired() async {
+    await resolveTestUnit('''
+class A {
+  test(int a) {}
+
+  main() {
+    test(1, named: 2.0);
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  test(int a, {double named}) {}
+
+  main() {
+    test(1, named: 2.0);
+  }
+}
+''');
+  }
+
+  test_method_noParameters() async {
+    await resolveTestUnit('''
+class A {
+  test() {}
+
+  main() {
+    test(named: 42);
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  test({int named}) {}
+
+  main() {
+    test(named: 42);
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/add_missing_parameter_positional_test.dart b/pkg/analysis_server/test/src/services/correction/fix/add_missing_parameter_positional_test.dart
new file mode 100644
index 0000000..ba8e53d
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/add_missing_parameter_positional_test.dart
@@ -0,0 +1,65 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AddMissingParameterPositionalTest);
+  });
+}
+
+@reflectiveTest
+class AddMissingParameterPositionalTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.ADD_MISSING_PARAMETER_POSITIONAL;
+
+  test_function_hasNamed() async {
+    await resolveTestUnit('''
+test({int a}) {}
+main() {
+  test(1);
+}
+''');
+    await assertNoFix();
+  }
+
+  test_function_hasZero() async {
+    await resolveTestUnit('''
+test() {}
+main() {
+  test(1);
+}
+''');
+    await assertHasFix('''
+test([int i]) {}
+main() {
+  test(1);
+}
+''');
+  }
+
+  test_method_hasOne() async {
+    await resolveTestUnit('''
+class A {
+  test(int a) {}
+  main() {
+    test(1, 2.0);
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  test(int a, [double d]) {}
+  main() {
+    test(1, 2.0);
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/add_missing_parameter_required_test.dart b/pkg/analysis_server/test/src/services/correction/fix/add_missing_parameter_required_test.dart
new file mode 100644
index 0000000..7e4dbdf
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/add_missing_parameter_required_test.dart
@@ -0,0 +1,142 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AddMissingParameterRequiredTest);
+  });
+}
+
+@reflectiveTest
+class AddMissingParameterRequiredTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.ADD_MISSING_PARAMETER_REQUIRED;
+
+  test_constructor_named_hasOne() async {
+    await resolveTestUnit('''
+class A {
+  A.named(int a) {}
+}
+main() {
+  new A.named(1, 2.0);
+}
+''');
+    await assertHasFix('''
+class A {
+  A.named(int a, double d) {}
+}
+main() {
+  new A.named(1, 2.0);
+}
+''');
+  }
+
+  test_constructor_unnamed_hasOne() async {
+    await resolveTestUnit('''
+class A {
+  A(int a) {}
+}
+main() {
+  new A(1, 2.0);
+}
+''');
+    await assertHasFix('''
+class A {
+  A(int a, double d) {}
+}
+main() {
+  new A(1, 2.0);
+}
+''');
+  }
+
+  test_function_hasNamed() async {
+    await resolveTestUnit('''
+test({int a}) {}
+main() {
+  test(1);
+}
+''');
+    await assertHasFix('''
+test(int i, {int a}) {}
+main() {
+  test(1);
+}
+''');
+  }
+
+  test_function_hasOne() async {
+    await resolveTestUnit('''
+test(int a) {}
+main() {
+  test(1, 2.0);
+}
+''');
+    await assertHasFix('''
+test(int a, double d) {}
+main() {
+  test(1, 2.0);
+}
+''');
+  }
+
+  test_function_hasZero() async {
+    await resolveTestUnit('''
+test() {}
+main() {
+  test(1);
+}
+''');
+    await assertHasFix('''
+test(int i) {}
+main() {
+  test(1);
+}
+''');
+  }
+
+  test_method_hasOne() async {
+    await resolveTestUnit('''
+class A {
+  test(int a) {}
+  main() {
+    test(1, 2.0);
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  test(int a, double d) {}
+  main() {
+    test(1, 2.0);
+  }
+}
+''');
+  }
+
+  test_method_hasZero() async {
+    await resolveTestUnit('''
+class A {
+  test() {}
+  main() {
+    test(1);
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  test(int i) {}
+  main() {
+    test(1);
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/add_missing_required_argument_test.dart b/pkg/analysis_server/test/src/services/correction/fix/add_missing_required_argument_test.dart
new file mode 100644
index 0000000..20df52c
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/add_missing_required_argument_test.dart
@@ -0,0 +1,369 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AddMissingRequiredArgumentTest);
+  });
+}
+
+@reflectiveTest
+class AddMissingRequiredArgumentTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.ADD_MISSING_REQUIRED_ARGUMENT;
+
+  test_cons_flutter_children() async {
+    addFlutterPackage();
+    addMetaPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+import 'package:meta/meta.dart';
+
+class MyWidget extends Widget {
+  MyWidget({@required List<Widget> children});
+}
+
+build() {
+  return new MyWidget();
+}
+''');
+    await assertHasFix('''
+import 'package:flutter/widgets.dart';
+import 'package:meta/meta.dart';
+
+class MyWidget extends Widget {
+  MyWidget({@required List<Widget> children});
+}
+
+build() {
+  return new MyWidget(children: <Widget>[],);
+}
+''');
+  }
+
+  test_cons_flutter_hasTrailingComma() async {
+    addFlutterPackage();
+    addMetaPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+import 'package:meta/meta.dart';
+
+class MyWidget extends Widget {
+  MyWidget({@required int a, @required int b});
+}
+
+build() {
+  return new MyWidget(a: 1,);
+}
+''');
+    await assertHasFix('''
+import 'package:flutter/widgets.dart';
+import 'package:meta/meta.dart';
+
+class MyWidget extends Widget {
+  MyWidget({@required int a, @required int b});
+}
+
+build() {
+  return new MyWidget(a: 1, b: null,);
+}
+''');
+  }
+
+  test_cons_single() async {
+    addMetaPackage();
+    addSource('/home/test/lib/a.dart', r'''
+import 'package:meta/meta.dart';
+
+class A {
+  A({@required int a}) {}
+}
+''');
+    await resolveTestUnit('''
+import 'package:test/a.dart';
+
+main() {
+  A a = new A();
+  print(a);
+}
+''');
+    await assertHasFix('''
+import 'package:test/a.dart';
+
+main() {
+  A a = new A(a: null);
+  print(a);
+}
+''');
+  }
+
+  test_cons_single_closure() async {
+    addMetaPackage();
+    addSource('/home/test/lib/a.dart', r'''
+import 'package:meta/meta.dart';
+
+typedef void VoidCallback();
+
+class A {
+  A({@required VoidCallback onPressed}) {}
+}
+''');
+    await resolveTestUnit('''
+import 'package:test/a.dart';
+
+main() {
+  A a = new A();
+  print(a);
+}
+''');
+    await assertHasFix('''
+import 'package:test/a.dart';
+
+main() {
+  A a = new A(onPressed: () {});
+  print(a);
+}
+''');
+  }
+
+  test_cons_single_closure_2() async {
+    addMetaPackage();
+    addSource('/home/test/lib/a.dart', r'''
+import 'package:meta/meta.dart';
+
+typedef void Callback(e);
+
+class A {
+  A({@required Callback callback}) {}
+}
+''');
+    await resolveTestUnit('''
+import 'package:test/a.dart';
+
+main() {
+  A a = new A();
+  print(a);
+}
+''');
+    await assertHasFix('''
+import 'package:test/a.dart';
+
+main() {
+  A a = new A(callback: (e) {});
+  print(a);
+}
+''');
+  }
+
+  test_cons_single_closure_3() async {
+    addMetaPackage();
+    addSource('/home/test/lib/a.dart', r'''
+import 'package:meta/meta.dart';
+
+typedef void Callback(a,b,c);
+
+class A {
+  A({@required Callback callback}) {}
+}
+''');
+    await resolveTestUnit('''
+import 'package:test/a.dart';
+
+main() {
+  A a = new A();
+  print(a);
+}
+''');
+    await assertHasFix('''
+import 'package:test/a.dart';
+
+main() {
+  A a = new A(callback: (a, b, c) {});
+  print(a);
+}
+''');
+  }
+
+  test_cons_single_closure_4() async {
+    addMetaPackage();
+    addSource('/home/test/lib/a.dart', r'''
+import 'package:meta/meta.dart';
+
+typedef int Callback(int a, String b,c);
+
+class A {
+  A({@required Callback callback}) {}
+}
+''');
+    await resolveTestUnit('''
+import 'package:test/a.dart';
+
+main() {
+  A a = new A();
+  print(a);
+}
+''');
+    await assertHasFix('''
+import 'package:test/a.dart';
+
+main() {
+  A a = new A(callback: (int a, String b, c) {});
+  print(a);
+}
+''');
+  }
+
+  test_cons_single_list() async {
+    addMetaPackage();
+    addSource('/home/test/lib/a.dart', r'''
+import 'package:meta/meta.dart';
+
+class A {
+  A({@required List<String> names}) {}
+}
+''');
+    await resolveTestUnit('''
+import 'package:test/a.dart';
+
+main() {
+  A a = new A();
+  print(a);
+}
+''');
+    await assertHasFix('''
+import 'package:test/a.dart';
+
+main() {
+  A a = new A(names: <String>[]);
+  print(a);
+}
+''');
+  }
+
+  test_multiple() async {
+    addMetaPackage();
+    await resolveTestUnit('''
+import 'package:meta/meta.dart';
+
+test({@required int a, @required int bcd}) {}
+main() {
+  test(a: 3);
+}
+''');
+    await assertHasFix('''
+import 'package:meta/meta.dart';
+
+test({@required int a, @required int bcd}) {}
+main() {
+  test(a: 3, bcd: null);
+}
+''');
+  }
+
+  test_multiple_1of2() async {
+    addMetaPackage();
+    await resolveTestUnit('''
+import 'package:meta/meta.dart';
+
+test({@required int a, @required int bcd}) {}
+main() {
+  test();
+}
+''');
+    await assertHasFix('''
+import 'package:meta/meta.dart';
+
+test({@required int a, @required int bcd}) {}
+main() {
+  test(a: null);
+}
+''', errorFilter: (error) => error.message.contains("'a'"));
+  }
+
+  test_multiple_2of2() async {
+    addMetaPackage();
+    await resolveTestUnit('''
+import 'package:meta/meta.dart';
+
+test({@required int a, @required int bcd}) {}
+main() {
+  test();
+}
+''');
+    await assertHasFix('''
+import 'package:meta/meta.dart';
+
+test({@required int a, @required int bcd}) {}
+main() {
+  test(bcd: null);
+}
+''', errorFilter: (error) => error.message.contains("'bcd'"));
+  }
+
+  test_single() async {
+    addMetaPackage();
+    await resolveTestUnit('''
+import 'package:meta/meta.dart';
+
+test({@required int abc}) {}
+main() {
+  test();
+}
+''');
+    await assertHasFix('''
+import 'package:meta/meta.dart';
+
+test({@required int abc}) {}
+main() {
+  test(abc: null);
+}
+''');
+  }
+
+  test_single_normal() async {
+    addMetaPackage();
+    await resolveTestUnit('''
+import 'package:meta/meta.dart';
+
+test(String x, {@required int abc}) {}
+main() {
+  test("foo");
+}
+''');
+    await assertHasFix('''
+import 'package:meta/meta.dart';
+
+test(String x, {@required int abc}) {}
+main() {
+  test("foo", abc: null);
+}
+''');
+  }
+
+  test_single_with_details() async {
+    addMetaPackage();
+    await resolveTestUnit('''
+import 'package:meta/meta.dart';
+
+test({@Required("Really who doesn't need an abc?") int abc}) {}
+main() {
+  test();
+}
+''');
+    await assertHasFix('''
+import 'package:meta/meta.dart';
+
+test({@Required("Really who doesn't need an abc?") int abc}) {}
+main() {
+  test(abc: null);
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/add_ne_null_test.dart b/pkg/analysis_server/test/src/services/correction/fix/add_ne_null_test.dart
new file mode 100644
index 0000000..c8b6d00
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/add_ne_null_test.dart
@@ -0,0 +1,62 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AddNeNullTest);
+  });
+}
+
+@reflectiveTest
+class AddNeNullTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.ADD_NE_NULL;
+
+  test_nonBoolCondition() async {
+    await resolveTestUnit('''
+main(String p) {
+  if (p) {
+    print(p);
+  }
+}
+''');
+    await assertHasFix('''
+main(String p) {
+  if (p != null) {
+    print(p);
+  }
+}
+''');
+  }
+
+  test_nonBoolCondition_all() async {
+    await resolveTestUnit('''
+main(String p, String q) {
+  if (p) {
+    print(p);
+  }
+  if (q) {
+    print(q);
+  }
+}
+''');
+    await assertHasFixAllFix(StaticTypeWarningCode.NON_BOOL_CONDITION, '''
+main(String p, String q) {
+  if (p != null) {
+    print(p);
+  }
+  if (q != null) {
+    print(q);
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/add_override_test.dart b/pkg/analysis_server/test/src/services/correction/fix/add_override_test.dart
new file mode 100644
index 0000000..8a1cf11
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/add_override_test.dart
@@ -0,0 +1,179 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AddOverrideTest);
+  });
+}
+
+@reflectiveTest
+class AddOverrideTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.ADD_OVERRIDE;
+
+  @override
+  String get lintCode => LintNames.annotate_overrides;
+
+  test_field() async {
+    await resolveTestUnit('''
+class abstract Test {
+  int get t;
+}
+class Sub extends Test {
+  int /*LINT*/t = 42;
+}
+''');
+    await assertHasFix('''
+class abstract Test {
+  int get t;
+}
+class Sub extends Test {
+  @override
+  int /*LINT*/t = 42;
+}
+''');
+  }
+
+  test_getter() async {
+    await resolveTestUnit('''
+class Test {
+  int get t => null;
+}
+class Sub extends Test {
+  int get /*LINT*/t => null;
+}
+''');
+    await assertHasFix('''
+class Test {
+  int get t => null;
+}
+class Sub extends Test {
+  @override
+  int get /*LINT*/t => null;
+}
+''');
+  }
+
+  test_method() async {
+    await resolveTestUnit('''
+class Test {
+  void t() { }
+}
+class Sub extends Test {
+  void /*LINT*/t() { }
+}
+''');
+    await assertHasFix('''
+class Test {
+  void t() { }
+}
+class Sub extends Test {
+  @override
+  void /*LINT*/t() { }
+}
+''');
+  }
+
+  test_method_with_doc_comment() async {
+    await resolveTestUnit('''
+class Test {
+  void t() { }
+}
+class Sub extends Test {
+  /// Doc comment.
+  void /*LINT*/t() { }
+}
+''');
+    await assertHasFix('''
+class Test {
+  void t() { }
+}
+class Sub extends Test {
+  /// Doc comment.
+  @override
+  void /*LINT*/t() { }
+}
+''');
+  }
+
+  test_method_with_doc_comment_2() async {
+    await resolveTestUnit('''
+class Test {
+  void t() { }
+}
+class Sub extends Test {
+  /**
+   * Doc comment.
+   */
+  void /*LINT*/t() { }
+}
+''');
+    await assertHasFix('''
+class Test {
+  void t() { }
+}
+class Sub extends Test {
+  /**
+   * Doc comment.
+   */
+  @override
+  void /*LINT*/t() { }
+}
+''');
+  }
+
+  test_method_with_doc_comment_and_metadata() async {
+    await resolveTestUnit('''
+class Test {
+  void t() { }
+}
+class Sub extends Test {
+  /// Doc comment.
+  @foo
+  void /*LINT*/t() { }
+}
+''');
+    await assertHasFix('''
+class Test {
+  void t() { }
+}
+class Sub extends Test {
+  /// Doc comment.
+  @override
+  @foo
+  void /*LINT*/t() { }
+}
+''');
+  }
+
+  test_method_with_non_doc_comment() async {
+    await resolveTestUnit('''
+class Test {
+  void t() { }
+}
+class Sub extends Test {
+  // Non-doc comment.
+  void /*LINT*/t() { }
+}
+''');
+    await assertHasFix('''
+class Test {
+  void t() { }
+}
+class Sub extends Test {
+  // Non-doc comment.
+  @override
+  void /*LINT*/t() { }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/add_required_test.dart b/pkg/analysis_server/test/src/services/correction/fix/add_required_test.dart
new file mode 100644
index 0000000..eae5d92
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/add_required_test.dart
@@ -0,0 +1,38 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AddRequiredTest);
+  });
+}
+
+@reflectiveTest
+class AddRequiredTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.ADD_REQUIRED;
+
+  @override
+  String get lintCode => LintNames.always_require_non_null_named_parameters;
+
+  test_withAssert() async {
+    await resolveTestUnit('''
+void function({String /*LINT*/param}) {
+  assert(param != null);
+}
+''');
+    await assertHasFix('''
+void function({@required String /*LINT*/param}) {
+  assert(param != null);
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/add_static_test.dart b/pkg/analysis_server/test/src/services/correction/fix/add_static_test.dart
new file mode 100644
index 0000000..bf136bd
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/add_static_test.dart
@@ -0,0 +1,47 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AddStaticTest);
+  });
+}
+
+@reflectiveTest
+class AddStaticTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.ADD_STATIC;
+
+  test_multipleFields() async {
+    await resolveTestUnit('''
+class C {
+  const int x = 0, y = 0;
+}
+''');
+    await assertHasFix('''
+class C {
+  static const int x = 0, y = 0;
+}
+''');
+  }
+
+  test_oneField() async {
+    await resolveTestUnit('''
+class C {
+  const int x = 0;
+}
+''');
+    await assertHasFix('''
+class C {
+  static const int x = 0;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/add_super_constructor_invocation_test.dart b/pkg/analysis_server/test/src/services/correction/fix/add_super_constructor_invocation_test.dart
new file mode 100644
index 0000000..f6282cc
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/add_super_constructor_invocation_test.dart
@@ -0,0 +1,111 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AddSuperConstructorInvocationTest);
+  });
+}
+
+@reflectiveTest
+class AddSuperConstructorInvocationTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.ADD_SUPER_CONSTRUCTOR_INVOCATION;
+
+  test_hasInitializers() async {
+    await resolveTestUnit('''
+class A {
+  A(int p);
+}
+class B extends A {
+  int field;
+  B() : field = 42 {}
+}
+''');
+    await assertHasFix('''
+class A {
+  A(int p);
+}
+class B extends A {
+  int field;
+  B() : field = 42, super(0) {}
+}
+''');
+  }
+
+  test_named() async {
+    await resolveTestUnit('''
+class A {
+  A.named(int p);
+}
+class B extends A {
+  B() {}
+}
+''');
+    await assertHasFix('''
+class A {
+  A.named(int p);
+}
+class B extends A {
+  B() : super.named(0) {}
+}
+''');
+  }
+
+  test_named_private() async {
+    await resolveTestUnit('''
+class A {
+  A._named(int p);
+}
+class B extends A {
+  B() {}
+}
+''');
+    await assertNoFix();
+  }
+
+  test_requiredAndNamed() async {
+    await resolveTestUnit('''
+class A {
+  A(bool p1, int p2, double p3, String p4, {p5});
+}
+class B extends A {
+  B() {}
+}
+''');
+    await assertHasFix('''
+class A {
+  A(bool p1, int p2, double p3, String p4, {p5});
+}
+class B extends A {
+  B() : super(false, 0, 0.0, '') {}
+}
+''');
+  }
+
+  test_typeArgument() async {
+    await resolveTestUnit('''
+class A<T> {
+  A(T p);
+}
+class B extends A<int> {
+  B();
+}
+''');
+    await assertHasFix('''
+class A<T> {
+  A(T p);
+}
+class B extends A<int> {
+  B() : super(0);
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/change_to_nearest_precise_value_test.dart b/pkg/analysis_server/test/src/services/correction/fix/change_to_nearest_precise_value_test.dart
new file mode 100644
index 0000000..01c6749
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/change_to_nearest_precise_value_test.dart
@@ -0,0 +1,66 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ChangeToNearestPreciseValueTest);
+  });
+}
+
+@reflectiveTest
+class ChangeToNearestPreciseValueTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CHANGE_TO_NEAREST_PRECISE_VALUE;
+
+  test_impreciseIntAsDouble() async {
+    await resolveTestUnit('''
+double x = 1000000000000000000000000;
+''');
+    await assertHasFix('''
+double x = 999999999999999983222784;
+''');
+  }
+
+  test_impreciseIntAsDouble_asCapitalHex() async {
+    await resolveTestUnit('''
+double x = 0X1000000000000000000000001;
+''');
+    await assertHasFix('''
+double x = 0x1000000000000000000000000;
+''');
+  }
+
+  test_impreciseIntAsDouble_asHex() async {
+    await resolveTestUnit('''
+double x = 0x1000000000000000000000001;
+''');
+    await assertHasFix('''
+double x = 0x1000000000000000000000000;
+''');
+  }
+
+  test_impreciseIntAsDouble_maxValue() async {
+    await resolveTestUnit('''
+double x = 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000;
+''');
+    await assertHasFix('''
+double x = 179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368;
+''');
+  }
+
+  test_impreciseIntAsDouble_maxValue_asHex() async {
+    await resolveTestUnit('''
+double x = 0x100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000;
+''');
+    await assertHasFix('''
+double x = 0xFFFFFFFFFFFFF800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000;
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/change_to_static_access_test.dart b/pkg/analysis_server/test/src/services/correction/fix/change_to_static_access_test.dart
new file mode 100644
index 0000000..507b291
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/change_to_static_access_test.dart
@@ -0,0 +1,130 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ChangeToStaticAccessTest);
+  });
+}
+
+@reflectiveTest
+class ChangeToStaticAccessTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CHANGE_TO_STATIC_ACCESS;
+
+  test_method() async {
+    await resolveTestUnit('''
+class A {
+  static foo() {}
+}
+main(A a) {
+  a.foo();
+}
+''');
+    await assertHasFix('''
+class A {
+  static foo() {}
+}
+main(A a) {
+  A.foo();
+}
+''');
+  }
+
+  test_method_importType() async {
+    addSource('/home/test/lib/a.dart', r'''
+class A {
+  static foo() {}
+}
+''');
+    addSource('/home/test/lib/b.dart', r'''
+import 'package:test/a.dart';
+
+class B extends A {}
+''');
+    await resolveTestUnit('''
+import 'package:test/b.dart';
+
+main(B b) {
+  b.foo();
+}
+''');
+    await assertHasFix('''
+import 'package:test/a.dart';
+import 'package:test/b.dart';
+
+main(B b) {
+  A.foo();
+}
+''');
+  }
+
+  test_method_prefixLibrary() async {
+    await resolveTestUnit('''
+import 'dart:async' as pref;
+main(pref.Future f) {
+  f.wait([]);
+}
+''');
+    await assertHasFix('''
+import 'dart:async' as pref;
+main(pref.Future f) {
+  pref.Future.wait([]);
+}
+''');
+  }
+
+  test_property() async {
+    await resolveTestUnit('''
+class A {
+  static get foo => 42;
+}
+main(A a) {
+  a.foo;
+}
+''');
+    await assertHasFix('''
+class A {
+  static get foo => 42;
+}
+main(A a) {
+  A.foo;
+}
+''');
+  }
+
+  test_property_importType() async {
+    addSource('/home/test/lib/a.dart', r'''
+class A {
+  static get foo => null;
+}
+''');
+    addSource('/home/test/lib/b.dart', r'''
+import 'package:test/a.dart';
+
+class B extends A {}
+''');
+    await resolveTestUnit('''
+import 'package:test/b.dart';
+
+main(B b) {
+  b.foo;
+}
+''');
+    await assertHasFix('''
+import 'package:test/a.dart';
+import 'package:test/b.dart';
+
+main(B b) {
+  A.foo;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/change_to_test.dart b/pkg/analysis_server/test/src/services/correction/fix/change_to_test.dart
new file mode 100644
index 0000000..553d1e5
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/change_to_test.dart
@@ -0,0 +1,332 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ChangeToTest);
+  });
+}
+
+@reflectiveTest
+class ChangeToTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CHANGE_TO;
+
+  test_undefinedClass_fromImport() async {
+    await resolveTestUnit('''
+main() {
+  Stirng s = 'abc';
+  print(s);
+}
+''');
+    await assertHasFix('''
+main() {
+  String s = 'abc';
+  print(s);
+}
+''');
+  }
+
+  test_undefinedClass_fromThisLibrary() async {
+    await resolveTestUnit('''
+class MyClass {}
+main() {
+  MyCalss v = null;
+  print(v);
+}
+''');
+    await assertHasFix('''
+class MyClass {}
+main() {
+  MyClass v = null;
+  print(v);
+}
+''');
+  }
+
+  test_undefinedClass_prefixed() async {
+    await resolveTestUnit('''
+import 'dart:async' as c;
+main() {
+  c.Fture v = null;
+  print(v);
+}
+''');
+    await assertHasFix('''
+import 'dart:async' as c;
+main() {
+  c.Future v = null;
+  print(v);
+}
+''');
+  }
+
+  test_undefinedFunction_fromImport() async {
+    await resolveTestUnit('''
+main() {
+  pritn(0);
+}
+''');
+    await assertHasFix('''
+main() {
+  print(0);
+}
+''');
+  }
+
+  test_undefinedFunction_prefixed_fromImport() async {
+    await resolveTestUnit('''
+import 'dart:core' as c;
+main() {
+  c.prnt(42);
+}
+''');
+    await assertHasFix('''
+import 'dart:core' as c;
+main() {
+  c.print(42);
+}
+''');
+  }
+
+  test_undefinedFunction_prefixed_ignoreLocal() async {
+    await resolveTestUnit('''
+import 'dart:async' as c;
+main() {
+  c.main();
+}
+''');
+    await assertNoFix();
+  }
+
+  test_undefinedFunction_thisLibrary() async {
+    await resolveTestUnit('''
+myFunction() {}
+main() {
+  myFuntcion();
+}
+''');
+    await assertHasFix('''
+myFunction() {}
+main() {
+  myFunction();
+}
+''');
+  }
+
+  test_undefinedGetter_hint() async {
+    await resolveTestUnit('''
+class A {
+  int myField;
+}
+main(A a) {
+  var x = a;
+  print(x.myFild);
+}
+''');
+    await assertHasFix('''
+class A {
+  int myField;
+}
+main(A a) {
+  var x = a;
+  print(x.myField);
+}
+''');
+  }
+
+  test_undefinedGetter_qualified() async {
+    await resolveTestUnit('''
+class A {
+  int myField;
+}
+main(A a) {
+  print(a.myFild);
+}
+''');
+    await assertHasFix('''
+class A {
+  int myField;
+}
+main(A a) {
+  print(a.myField);
+}
+''');
+  }
+
+  test_undefinedGetter_qualified_static() async {
+    await resolveTestUnit('''
+class A {
+  static int MY_NAME = 1;
+}
+main() {
+  A.MY_NAM;
+}
+''');
+    await assertHasFix('''
+class A {
+  static int MY_NAME = 1;
+}
+main() {
+  A.MY_NAME;
+}
+''');
+  }
+
+  test_undefinedGetter_unqualified() async {
+    await resolveTestUnit('''
+class A {
+  int myField;
+  main() {
+    print(myFild);
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  int myField;
+  main() {
+    print(myField);
+  }
+}
+''');
+  }
+
+  test_undefinedMethod_ignoreOperators() async {
+    await resolveTestUnit('''
+main(Object object) {
+  object.then();
+}
+''');
+    await assertNoFix();
+  }
+
+  test_undefinedMethod_qualified() async {
+    await resolveTestUnit('''
+class A {
+  myMethod() {}
+}
+main() {
+  A a = new A();
+  a.myMehtod();
+}
+''');
+    await assertHasFix('''
+class A {
+  myMethod() {}
+}
+main() {
+  A a = new A();
+  a.myMethod();
+}
+''');
+  }
+
+  test_undefinedMethod_unqualified_superClass() async {
+    await resolveTestUnit('''
+class A {
+  myMethod() {}
+}
+class B extends A {
+  main() {
+    myMehtod();
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  myMethod() {}
+}
+class B extends A {
+  main() {
+    myMethod();
+  }
+}
+''');
+  }
+
+  test_undefinedMethod_unqualified_thisClass() async {
+    await resolveTestUnit('''
+class A {
+  myMethod() {}
+  main() {
+    myMehtod();
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  myMethod() {}
+  main() {
+    myMethod();
+  }
+}
+''');
+  }
+
+  test_undefinedSetter_hint() async {
+    await resolveTestUnit('''
+class A {
+  int myField;
+}
+main(A a) {
+  var x = a;
+  x.myFild = 42;
+}
+''');
+    await assertHasFix('''
+class A {
+  int myField;
+}
+main(A a) {
+  var x = a;
+  x.myField = 42;
+}
+''');
+  }
+
+  test_undefinedSetter_qualified() async {
+    await resolveTestUnit('''
+class A {
+  int myField;
+}
+main(A a) {
+  a.myFild = 42;
+}
+''');
+    await assertHasFix('''
+class A {
+  int myField;
+}
+main(A a) {
+  a.myField = 42;
+}
+''');
+  }
+
+  test_undefinedSetter_unqualified() async {
+    await resolveTestUnit('''
+class A {
+  int myField;
+  main() {
+    myFild = 42;
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  int myField;
+  main() {
+    myField = 42;
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/change_type_annotation_test.dart b/pkg/analysis_server/test/src/services/correction/fix/change_type_annotation_test.dart
new file mode 100644
index 0000000..8fbb66a
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/change_type_annotation_test.dart
@@ -0,0 +1,72 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ChangeTypeAnnotationTest);
+  });
+}
+
+@reflectiveTest
+class ChangeTypeAnnotationTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CHANGE_TYPE_ANNOTATION;
+
+  test_generic() async {
+    await resolveTestUnit('''
+main() {
+  String v = <int>[];
+  print(v);
+}
+''');
+    await assertHasFix('''
+main() {
+  List<int> v = <int>[];
+  print(v);
+}
+''');
+  }
+
+  test_multipleVariables() async {
+    await resolveTestUnit('''
+main() {
+  String a, b = 42;
+  print('\$a \$b');
+}
+''');
+    await assertNoFix();
+  }
+
+  test_notVariableDeclaration() async {
+    await resolveTestUnit('''
+main() {
+  String v;
+  v = 42;
+  print(v);
+}
+''');
+    await assertNoFix();
+  }
+
+  test_simple() async {
+    await resolveTestUnit('''
+main() {
+  String v = 'abc'.length;
+  print(v);
+}
+''');
+    await assertHasFix('''
+main() {
+  int v = 'abc'.length;
+  print(v);
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/convert_flutter_child_test.dart b/pkg/analysis_server/test/src/services/correction/fix/convert_flutter_child_test.dart
new file mode 100644
index 0000000..e75321d
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/convert_flutter_child_test.dart
@@ -0,0 +1,153 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertFlutterChildTest);
+  });
+}
+
+@reflectiveTest
+class ConvertFlutterChildTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CONVERT_FLUTTER_CHILD;
+
+  test_hasList() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+build() {
+  return new Container(
+    child: new Row(
+      child: [
+        new Text('111'),
+        new Text('222'),
+      ],
+    ),
+  );
+}
+''');
+    await assertHasFix('''
+import 'package:flutter/widgets.dart';
+build() {
+  return new Container(
+    child: new Row(
+      children: <Widget>[
+        new Text('111'),
+        new Text('222'),
+      ],
+    ),
+  );
+}
+''');
+  }
+
+  test_hasTypedList() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+build() {
+  return new Container(
+    child: new Row(
+      child: <Widget>[
+        new Text('111'),
+        new Text('222'),
+      ],
+    ),
+  );
+}
+''');
+    await assertHasFix('''
+import 'package:flutter/widgets.dart';
+build() {
+  return new Container(
+    child: new Row(
+      children: <Widget>[
+        new Text('111'),
+        new Text('222'),
+      ],
+    ),
+  );
+}
+''');
+  }
+
+  test_listNotWidget() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+build() {
+  return new Container(
+    child: new Row(
+      child: <Widget>[
+        new Container(),
+        null,
+      ],
+    ),
+  );
+}
+''');
+    await assertNoFix();
+  }
+
+  test_multiLine() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+build() {
+  return new Scaffold(
+    body: new Row(
+      child: new Container(
+        width: 200.0,
+        height: 300.0,
+      ),
+    ),
+  );
+}
+''');
+    await assertHasFix('''
+import 'package:flutter/material.dart';
+build() {
+  return new Scaffold(
+    body: new Row(
+      children: <Widget>[
+        new Container(
+          width: 200.0,
+          height: 300.0,
+        ),
+      ],
+    ),
+  );
+}
+''');
+  }
+
+  test_widgetVariable() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/material.dart';
+build() {
+  var text = new Text('foo');
+  new Row(
+    child: text,
+  );
+}
+''');
+    await assertHasFix('''
+import 'package:flutter/material.dart';
+build() {
+  var text = new Text('foo');
+  new Row(
+    children: <Widget>[text],
+  );
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/convert_flutter_children_test.dart b/pkg/analysis_server/test/src/services/correction/fix/convert_flutter_children_test.dart
new file mode 100644
index 0000000..f975f0a
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/convert_flutter_children_test.dart
@@ -0,0 +1,108 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertFlutterChildrenTest);
+  });
+}
+
+@reflectiveTest
+class ConvertFlutterChildrenTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CONVERT_FLUTTER_CHILDREN;
+
+  test_undefinedParameter_multiLine() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+build() {
+  return new Center(
+    children: [
+      new Container(
+        width: 200.0,
+        height: 300.0,
+      ),
+    ],
+  );
+}
+''');
+    await assertHasFix('''
+import 'package:flutter/widgets.dart';
+build() {
+  return new Center(
+    child: new Container(
+      width: 200.0,
+      height: 300.0,
+    ),
+  );
+}
+''');
+  }
+
+  test_undefinedParameter_notWidget() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+build() {
+  return new Center(
+    children: [
+      new Object(),
+    ],
+  );
+}
+''');
+    await assertNoFix();
+  }
+
+  test_undefinedParameter_singleLine() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+build() {
+  return new Center(
+    children: [
+      new Text('foo'),
+    ],
+  );
+}
+''');
+    await assertHasFix('''
+import 'package:flutter/widgets.dart';
+build() {
+  return new Center(
+    child: new Text('foo'),
+  );
+}
+''');
+  }
+
+  test_undefinedParameter_singleLine2() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+build() {
+  var text = new Text('foo');
+  new Center(
+    children: [text],
+  );
+}
+''');
+    await assertHasFix('''
+import 'package:flutter/widgets.dart';
+build() {
+  var text = new Text('foo');
+  new Center(
+    child: text,
+  );
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/convert_to_named_arguments_test.dart b/pkg/analysis_server/test/src/services/correction/fix/convert_to_named_arguments_test.dart
new file mode 100644
index 0000000..de9c388
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/convert_to_named_arguments_test.dart
@@ -0,0 +1,110 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ConvertToNamedArgumentsTest);
+  });
+}
+
+@reflectiveTest
+class ConvertToNamedArgumentsTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CONVERT_TO_NAMED_ARGUMENTS;
+
+  test_ambiguous() async {
+    await resolveTestUnit('''
+class A {
+  A({int a, int b});
+}
+
+main() {
+  new A(1, 2);
+}
+''');
+    await assertNoFix();
+  }
+
+  test_instanceCreation() async {
+    await resolveTestUnit('''
+class A {
+  A({int a, double b});
+}
+
+main() {
+  new A(1.2, 3);
+}
+''');
+    await assertHasFix('''
+class A {
+  A({int a, double b});
+}
+
+main() {
+  new A(b: 1.2, a: 3);
+}
+''');
+  }
+
+  test_instanceCreation_hasPositional() async {
+    await resolveTestUnit('''
+class A {
+  A(int a, {int b});
+}
+
+main() {
+  new A(1, 2);
+}
+''');
+    await assertHasFix('''
+class A {
+  A(int a, {int b});
+}
+
+main() {
+  new A(1, b: 2);
+}
+''');
+  }
+
+  test_methodInvocation() async {
+    await resolveTestUnit('''
+class C {
+  void foo({int a}) {}
+}
+
+main(C c) {
+  c.foo(1);
+}
+''');
+    await assertHasFix('''
+class C {
+  void foo({int a}) {}
+}
+
+main(C c) {
+  c.foo(a: 1);
+}
+''');
+  }
+
+  test_noCompatibleParameter() async {
+    await resolveTestUnit('''
+class A {
+  A({String a});
+}
+
+main() {
+  new A(1);
+}
+''');
+    await assertNoFix();
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_class_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_class_test.dart
new file mode 100644
index 0000000..610c742
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_class_test.dart
@@ -0,0 +1,181 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CreateClassTest);
+  });
+}
+
+@reflectiveTest
+class CreateClassTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_CLASS;
+
+  test_hasUnresolvedPrefix() async {
+    await resolveTestUnit('''
+main() {
+  prefix.Test v = null;
+  print(v);
+}
+''');
+    await assertNoFix();
+  }
+
+  test_inLibraryOfPrefix() async {
+    addSource('/home/test/lib/lib.dart', r'''
+class A {}
+''');
+
+    await resolveTestUnit('''
+import 'lib.dart' as lib;
+
+main() {
+  lib.A a = null;
+  lib.Test t = null;
+  print('\$a \$t');
+}
+''');
+
+    await assertHasFix('''
+class A {}
+
+class Test {
+}
+''', target: '/home/test/lib/lib.dart');
+    expect(change.linkedEditGroups, hasLength(1));
+  }
+
+  test_innerLocalFunction() async {
+    await resolveTestUnit('''
+f() {
+  g() {
+    Test v = null;
+    print(v);
+  }
+  g();
+}
+''');
+    await assertHasFix('''
+f() {
+  g() {
+    Test v = null;
+    print(v);
+  }
+  g();
+}
+
+class Test {
+}
+''');
+    assertLinkedGroup(change.linkedEditGroups[0], ['Test v =', 'Test {']);
+  }
+
+  test_instanceCreation_withoutNew_fromFunction() async {
+    await resolveTestUnit('''
+main() {
+  Test ();
+}
+''');
+    await assertHasFix('''
+main() {
+  Test ();
+}
+
+class Test {
+}
+''');
+    assertLinkedGroup(change.linkedEditGroups[0], ['Test ()', 'Test {']);
+  }
+
+  test_instanceCreation_withoutNew_fromMethod() async {
+    await resolveTestUnit('''
+class A {
+  main() {
+    Test ();
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  main() {
+    Test ();
+  }
+}
+
+class Test {
+}
+''');
+    assertLinkedGroup(change.linkedEditGroups[0], ['Test ()', 'Test {']);
+  }
+
+  test_itemOfList() async {
+    await resolveTestUnit('''
+main() {
+  var a = [Test];
+  print(a);
+}
+''');
+    await assertHasFix('''
+main() {
+  var a = [Test];
+  print(a);
+}
+
+class Test {
+}
+''');
+    assertLinkedGroup(change.linkedEditGroups[0], ['Test];', 'Test {']);
+  }
+
+  test_itemOfList_inAnnotation() async {
+    await resolveTestUnit('''
+class MyAnnotation {
+  const MyAnnotation(a, b);
+}
+@MyAnnotation(int, const [Test])
+main() {}
+''');
+    await assertHasFix('''
+class MyAnnotation {
+  const MyAnnotation(a, b);
+}
+@MyAnnotation(int, const [Test])
+main() {}
+
+class Test {
+}
+''', errorFilter: (error) {
+      return error.errorCode == StaticWarningCode.UNDEFINED_IDENTIFIER;
+    });
+    assertLinkedGroup(change.linkedEditGroups[0], ['Test])', 'Test {']);
+  }
+
+  test_simple() async {
+    await resolveTestUnit('''
+main() {
+  Test v = null;
+  print(v);
+}
+''');
+    await assertHasFix('''
+main() {
+  Test v = null;
+  print(v);
+}
+
+class Test {
+}
+''');
+    assertLinkedGroup(change.linkedEditGroups[0], ['Test v =', 'Test {']);
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_constructor_for_final_fields_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_constructor_for_final_fields_test.dart
new file mode 100644
index 0000000..fa355b6
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_constructor_for_final_fields_test.dart
@@ -0,0 +1,137 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CreateConstructorForFinalFieldsTest);
+  });
+}
+
+@reflectiveTest
+class CreateConstructorForFinalFieldsTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_CONSTRUCTOR_FOR_FINAL_FIELDS;
+
+  test_flutter() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+
+class MyWidget extends StatelessWidget {
+  final int a;
+  final int b = 2;
+  final int c;
+}
+''');
+    await assertHasFix('''
+import 'package:flutter/widgets.dart';
+
+class MyWidget extends StatelessWidget {
+  final int a;
+  final int b = 2;
+  final int c;
+
+  const MyWidget({Key key, this.a, this.c}) : super(key: key);
+}
+''', errorFilter: (error) {
+      return error.message.contains("'a'");
+    });
+  }
+
+  test_flutter_childLast() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+
+class MyWidget extends StatelessWidget {
+  final int a;
+  final Widget child;
+  final int b;
+}
+''');
+    await assertHasFix('''
+import 'package:flutter/widgets.dart';
+
+class MyWidget extends StatelessWidget {
+  final int a;
+  final Widget child;
+  final int b;
+
+  const MyWidget({Key key, this.a, this.b, this.child}) : super(key: key);
+}
+''', errorFilter: (error) {
+      return error.message.contains("'a'");
+    });
+  }
+
+  test_flutter_childrenLast() async {
+    addFlutterPackage();
+    await resolveTestUnit('''
+import 'package:flutter/widgets.dart';
+
+class MyWidget extends StatelessWidget {
+  final int a;
+  final List<Widget> children;
+  final int b;
+}
+''');
+    await assertHasFix('''
+import 'package:flutter/widgets.dart';
+
+class MyWidget extends StatelessWidget {
+  final int a;
+  final List<Widget> children;
+  final int b;
+
+  const MyWidget({Key key, this.a, this.b, this.children}) : super(key: key);
+}
+''', errorFilter: (error) {
+      return error.message.contains("'a'");
+    });
+  }
+
+  test_inTopLevelMethod() async {
+    await resolveTestUnit('''
+main() {
+  final int v;
+  print(v);
+}
+''');
+    await assertNoFix();
+  }
+
+  test_simple() async {
+    await resolveTestUnit('''
+class Test {
+  final int a;
+  final int b = 2;
+  final int c;
+}
+''');
+    await assertHasFix('''
+class Test {
+  final int a;
+  final int b = 2;
+  final int c;
+
+  Test(this.a, this.c);
+}
+''', errorFilter: (error) {
+      return error.message.contains("'a'");
+    });
+  }
+
+  test_topLevelField() async {
+    await resolveTestUnit('''
+final int v;
+''');
+    await assertNoFix();
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_constructor_super_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_constructor_super_test.dart
new file mode 100644
index 0000000..fe59b94
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_constructor_super_test.dart
@@ -0,0 +1,156 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CreateConstructorSuperTest);
+  });
+}
+
+@reflectiveTest
+class CreateConstructorSuperTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_CONSTRUCTOR_SUPER;
+
+  test_fieldInitializer() async {
+    await resolveTestUnit('''
+class A {
+  int _field;
+  A(this._field);
+  int get field => _field;
+}
+class B extends A {
+  int existingField;
+
+  void existingMethod() {}
+}
+''');
+    await assertHasFix('''
+class A {
+  int _field;
+  A(this._field);
+  int get field => _field;
+}
+class B extends A {
+  int existingField;
+
+  B(int field) : super(field);
+
+  void existingMethod() {}
+}
+''');
+  }
+
+  test_importType() async {
+    addSource('/home/test/lib/a.dart', r'''
+class A {}
+''');
+    addSource('/home/test/lib/b.dart', r'''
+import 'package:test/a.dart';
+
+class B {
+  B(A a);
+}
+''');
+    await resolveTestUnit('''
+import 'package:test/b.dart';
+
+class C extends B {
+}
+''');
+    await assertHasFix('''
+import 'package:test/a.dart';
+import 'package:test/b.dart';
+
+class C extends B {
+  C(A a) : super(a);
+}
+''');
+  }
+
+  test_named() async {
+    await resolveTestUnit('''
+class A {
+  A.named(p1, int p2);
+}
+class B extends A {
+  int existingField;
+
+  void existingMethod() {}
+}
+''');
+    await assertHasFix('''
+class A {
+  A.named(p1, int p2);
+}
+class B extends A {
+  int existingField;
+
+  B.named(p1, int p2) : super.named(p1, p2);
+
+  void existingMethod() {}
+}
+''');
+  }
+
+  test_optional() async {
+    await resolveTestUnit('''
+class A {
+  A(p1, int p2, List<String> p3, [int p4]);
+}
+class B extends A {
+  int existingField;
+
+  void existingMethod() {}
+}
+''');
+    await assertHasFix('''
+class A {
+  A(p1, int p2, List<String> p3, [int p4]);
+}
+class B extends A {
+  int existingField;
+
+  B(p1, int p2, List<String> p3) : super(p1, p2, p3);
+
+  void existingMethod() {}
+}
+''');
+  }
+
+  test_private() async {
+    await resolveTestUnit('''
+class A {
+  A._named(p);
+}
+class B extends A {
+}
+''');
+    await assertNoFix();
+  }
+
+  test_typeArgument() async {
+    await resolveTestUnit('''
+class C<T> {
+  final T x;
+  C(this.x);
+}
+class D extends C<int> {
+}''');
+    await assertHasFix('''
+class C<T> {
+  final T x;
+  C(this.x);
+}
+class D extends C<int> {
+  D(int x) : super(x);
+}''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_constructor_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_constructor_test.dart
new file mode 100644
index 0000000..d5e8dd5
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_constructor_test.dart
@@ -0,0 +1,104 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CreateConstructorTest);
+    defineReflectiveTests(CreateConstructorMixinTest);
+  });
+}
+
+@reflectiveTest
+class CreateConstructorMixinTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_CONSTRUCTOR;
+
+  test_named() async {
+    await resolveTestUnit('''
+mixin M {}
+
+main() {
+  new M.named();
+}
+''');
+    await assertNoFix();
+  }
+}
+
+@reflectiveTest
+class CreateConstructorTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_CONSTRUCTOR;
+
+  test_insteadOfSyntheticDefault() async {
+    await resolveTestUnit('''
+class A {
+  int field;
+
+  method() {}
+}
+main() {
+  new A(1, 2.0);
+}
+''');
+    await assertHasFix('''
+class A {
+  int field;
+
+  A(int i, double d);
+
+  method() {}
+}
+main() {
+  new A(1, 2.0);
+}
+''');
+  }
+
+  test_named() async {
+    await resolveTestUnit('''
+class A {
+  method() {}
+}
+main() {
+  new A.named(1, 2.0);
+}
+''');
+    await assertHasFix('''
+class A {
+  A.named(int i, double d);
+
+  method() {}
+}
+main() {
+  new A.named(1, 2.0);
+}
+''');
+    assertLinkedGroup(change.linkedEditGroups[0], ['named(int ', 'named(1']);
+  }
+
+  test_named_emptyClassBody() async {
+    await resolveTestUnit('''
+class A {}
+main() {
+  new A.named(1);
+}
+''');
+    await assertHasFix('''
+class A {
+  A.named(int i);
+}
+main() {
+  new A.named(1);
+}
+''');
+    assertLinkedGroup(change.linkedEditGroups[0], ['named(int ', 'named(1']);
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_field_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_field_test.dart
new file mode 100644
index 0000000..ed3eee0
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_field_test.dart
@@ -0,0 +1,555 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CreateFieldTest);
+    defineReflectiveTests(CreateFieldMixinTest);
+  });
+}
+
+@reflectiveTest
+class CreateFieldMixinTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_FIELD;
+
+  test_getter_qualified_instance() async {
+    await resolveTestUnit('''
+mixin M {
+}
+
+main(M m) {
+  int v = m.test;
+  print(v);
+}
+''');
+    await assertHasFix('''
+mixin M {
+  int test;
+}
+
+main(M m) {
+  int v = m.test;
+  print(v);
+}
+''');
+  }
+
+  test_setter_qualified_instance_hasField() async {
+    await resolveTestUnit('''
+mixin M {
+  int aaa;
+  int zzz;
+
+  existingMethod() {}
+}
+
+main(M m) {
+  m.test = 5;
+}
+''');
+    await assertHasFix('''
+mixin M {
+  int aaa;
+  int zzz;
+
+  int test;
+
+  existingMethod() {}
+}
+
+main(M m) {
+  m.test = 5;
+}
+''');
+  }
+}
+
+@reflectiveTest
+class CreateFieldTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_FIELD;
+
+  test_getter_multiLevel() async {
+    await resolveTestUnit('''
+class A {
+}
+class B {
+  A a;
+}
+class C {
+  B b;
+}
+main(C c) {
+  int v = c.b.a.test;
+  print(v);
+}
+''');
+    await assertHasFix('''
+class A {
+  int test;
+}
+class B {
+  A a;
+}
+class C {
+  B b;
+}
+main(C c) {
+  int v = c.b.a.test;
+  print(v);
+}
+''');
+  }
+
+  test_getter_qualified_instance() async {
+    await resolveTestUnit('''
+class A {
+}
+main(A a) {
+  int v = a.test;
+  print(v);
+}
+''');
+    await assertHasFix('''
+class A {
+  int test;
+}
+main(A a) {
+  int v = a.test;
+  print(v);
+}
+''');
+  }
+
+  test_getter_qualified_instance_differentLibrary() async {
+    addSource('/home/test/lib/other.dart', '''
+/**
+ * A comment to push the offset of the braces for the following class
+ * declaration past the end of the content of the test file. Used to catch an
+ * index out of bounds exception that occurs when using the test source instead
+ * of the target source to compute the location at which to insert the field.
+ */
+class A {
+}
+''');
+
+    await resolveTestUnit('''
+import 'package:test/other.dart';
+
+main(A a) {
+  int v = a.test;
+  print(v);
+}
+''');
+
+    await assertHasFix('''
+/**
+ * A comment to push the offset of the braces for the following class
+ * declaration past the end of the content of the test file. Used to catch an
+ * index out of bounds exception that occurs when using the test source instead
+ * of the target source to compute the location at which to insert the field.
+ */
+class A {
+  int test;
+}
+''', target: '/home/test/lib/other.dart');
+  }
+
+  test_getter_qualified_instance_dynamicType() async {
+    await resolveTestUnit('''
+class A {
+  B b;
+  void f(Object p) {
+    p == b.test;
+  }
+}
+class B {
+}
+''');
+    await assertHasFix('''
+class A {
+  B b;
+  void f(Object p) {
+    p == b.test;
+  }
+}
+class B {
+  var test;
+}
+''');
+  }
+
+  test_getter_qualified_propagatedType() async {
+    await resolveTestUnit('''
+class A {
+  A get self => this;
+}
+main() {
+  var a = new A();
+  int v = a.self.test;
+  print(v);
+}
+''');
+    await assertHasFix('''
+class A {
+  int test;
+
+  A get self => this;
+}
+main() {
+  var a = new A();
+  int v = a.self.test;
+  print(v);
+}
+''');
+  }
+
+  test_getter_unqualified_instance_asInvocationArgument() async {
+    await resolveTestUnit('''
+class A {
+  main() {
+    f(test);
+  }
+}
+f(String s) {}
+''');
+    await assertHasFix('''
+class A {
+  String test;
+
+  main() {
+    f(test);
+  }
+}
+f(String s) {}
+''');
+  }
+
+  test_getter_unqualified_instance_assignmentRhs() async {
+    await resolveTestUnit('''
+class A {
+  main() {
+    int v = test;
+    print(v);
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  int test;
+
+  main() {
+    int v = test;
+    print(v);
+  }
+}
+''');
+  }
+
+  test_getter_unqualified_instance_asStatement() async {
+    await resolveTestUnit('''
+class A {
+  main() {
+    test;
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  var test;
+
+  main() {
+    test;
+  }
+}
+''');
+  }
+
+  test_hint() async {
+    await resolveTestUnit('''
+class A {
+}
+main(A a) {
+  var x = a;
+  int v = x.test;
+  print(v);
+}
+''');
+    await assertHasFix('''
+class A {
+  int test;
+}
+main(A a) {
+  var x = a;
+  int v = x.test;
+  print(v);
+}
+''');
+  }
+
+  test_hint_setter() async {
+    await resolveTestUnit('''
+class A {
+}
+main(A a) {
+  var x = a;
+  x.test = 0;
+}
+''');
+    await assertHasFix('''
+class A {
+  int test;
+}
+main(A a) {
+  var x = a;
+  x.test = 0;
+}
+''');
+  }
+
+  test_importType() async {
+    addSource('/home/test/lib/a.dart', r'''
+class A {}
+''');
+
+    addSource('/home/test/lib/b.dart', r'''
+import 'package:test/a.dart';
+
+A getA() => null;
+''');
+
+    await resolveTestUnit('''
+import 'package:test/b.dart';
+
+class C {
+}
+
+main(C c) {
+  c.test = getA();
+}
+''');
+
+    await assertHasFix('''
+import 'package:test/a.dart';
+import 'package:test/b.dart';
+
+class C {
+  A test;
+}
+
+main(C c) {
+  c.test = getA();
+}
+''');
+  }
+
+  test_inEnum() async {
+    await resolveTestUnit('''
+enum MyEnum {
+  AAA, BBB
+}
+main() {
+  MyEnum.foo;
+}
+''');
+    await assertNoFix();
+  }
+
+  test_inSDK() async {
+    await resolveTestUnit('''
+main(List p) {
+  p.foo = 1;
+}
+''');
+    await assertNoFix();
+  }
+
+  test_invalidInitializer_withoutType() async {
+    await resolveTestUnit('''
+class C {
+  C(this.text);
+}
+''');
+    await assertHasFix('''
+class C {
+  var text;
+
+  C(this.text);
+}
+''');
+  }
+
+  test_invalidInitializer_withType() async {
+    await resolveTestUnit('''
+class C {
+  C(String this.text);
+}
+''');
+    await assertHasFix('''
+class C {
+  String text;
+
+  C(String this.text);
+}
+''');
+  }
+
+  test_setter_generic_BAD() async {
+    await resolveTestUnit('''
+class A {
+}
+class B<T> {
+  List<T> items;
+  main(A a) {
+    a.test = items;
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  List test;
+}
+class B<T> {
+  List<T> items;
+  main(A a) {
+    a.test = items;
+  }
+}
+''');
+  }
+
+  test_setter_generic_OK_local() async {
+    await resolveTestUnit('''
+class A<T> {
+  List<T> items;
+
+  main(A a) {
+    test = items;
+  }
+}
+''');
+    await assertHasFix('''
+class A<T> {
+  List<T> items;
+
+  List<T> test;
+
+  main(A a) {
+    test = items;
+  }
+}
+''');
+  }
+
+  test_setter_qualified_instance_hasField() async {
+    await resolveTestUnit('''
+class A {
+  int aaa;
+  int zzz;
+
+  existingMethod() {}
+}
+main(A a) {
+  a.test = 5;
+}
+''');
+    await assertHasFix('''
+class A {
+  int aaa;
+  int zzz;
+
+  int test;
+
+  existingMethod() {}
+}
+main(A a) {
+  a.test = 5;
+}
+''');
+  }
+
+  test_setter_qualified_instance_hasMethod() async {
+    await resolveTestUnit('''
+class A {
+  existingMethod() {}
+}
+main(A a) {
+  a.test = 5;
+}
+''');
+    await assertHasFix('''
+class A {
+  int test;
+
+  existingMethod() {}
+}
+main(A a) {
+  a.test = 5;
+}
+''');
+  }
+
+  test_setter_qualified_static() async {
+    await resolveTestUnit('''
+class A {
+}
+main() {
+  A.test = 5;
+}
+''');
+    await assertHasFix('''
+class A {
+  static int test;
+}
+main() {
+  A.test = 5;
+}
+''');
+  }
+
+  test_setter_unqualified_instance() async {
+    await resolveTestUnit('''
+class A {
+  main() {
+    test = 5;
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  int test;
+
+  main() {
+    test = 5;
+  }
+}
+''');
+  }
+
+  test_setter_unqualified_static() async {
+    await resolveTestUnit('''
+class A {
+  static main() {
+    test = 5;
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  static int test;
+
+  static main() {
+    test = 5;
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_file_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_file_test.dart
new file mode 100644
index 0000000..3bb2fd8
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_file_test.dart
@@ -0,0 +1,101 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/protocol_server.dart';
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CreateFileTest);
+  });
+}
+
+@reflectiveTest
+class CreateFileTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_FILE;
+
+  test_forImport() async {
+    await resolveTestUnit('''
+import 'my_file.dart';
+''');
+    await assertHasFixWithoutApplying();
+    // validate change
+    List<SourceFileEdit> fileEdits = change.edits;
+    expect(fileEdits, hasLength(1));
+    SourceFileEdit fileEdit = change.edits[0];
+    expect(fileEdit.file, convertPath('/home/test/lib/my_file.dart'));
+    expect(fileEdit.fileStamp, -1);
+    expect(fileEdit.edits, hasLength(1));
+    expect(
+      fileEdit.edits[0].replacement,
+      contains('// TODO Implement this library.'),
+    );
+  }
+
+  test_forImport_BAD_notDart() async {
+    await resolveTestUnit('''
+import 'my_file.txt';
+''');
+    await assertNoFix();
+  }
+
+  test_forImport_inPackage_lib() async {
+    await resolveTestUnit('''
+import 'a/bb/my_lib.dart';
+''');
+    await assertHasFixWithoutApplying();
+    // validate change
+    List<SourceFileEdit> fileEdits = change.edits;
+    expect(fileEdits, hasLength(1));
+    SourceFileEdit fileEdit = change.edits[0];
+    expect(fileEdit.file, convertPath('/home/test/lib/a/bb/my_lib.dart'));
+    expect(fileEdit.fileStamp, -1);
+    expect(fileEdit.edits, hasLength(1));
+    expect(
+      fileEdit.edits[0].replacement,
+      contains('// TODO Implement this library.'),
+    );
+  }
+
+  test_forImport_inPackage_test() async {
+    testFile = convertPath('/home/test/test/test.dart');
+    await resolveTestUnit('''
+import 'a/bb/my_lib.dart';
+''');
+    await assertHasFixWithoutApplying();
+    // validate change
+    List<SourceFileEdit> fileEdits = change.edits;
+    expect(fileEdits, hasLength(1));
+    SourceFileEdit fileEdit = change.edits[0];
+    expect(fileEdit.file, convertPath('/home/test/test/a/bb/my_lib.dart'));
+    expect(fileEdit.fileStamp, -1);
+    expect(fileEdit.edits, hasLength(1));
+    expect(
+      fileEdit.edits[0].replacement,
+      contains('// TODO Implement this library.'),
+    );
+  }
+
+  test_forPart() async {
+    await resolveTestUnit('''
+library my.lib;
+part 'my_part.dart';
+''');
+    await assertHasFixWithoutApplying();
+    // validate change
+    List<SourceFileEdit> fileEdits = change.edits;
+    expect(fileEdits, hasLength(1));
+    SourceFileEdit fileEdit = change.edits[0];
+    expect(fileEdit.file, convertPath('/home/test/lib/my_part.dart'));
+    expect(fileEdit.fileStamp, -1);
+    expect(fileEdit.edits, hasLength(1));
+    expect(fileEdit.edits[0].replacement, contains('part of my.lib;'));
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_function_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_function_test.dart
new file mode 100644
index 0000000..6fc4504
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_function_test.dart
@@ -0,0 +1,550 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/protocol_server.dart';
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CreateFunctionTest);
+  });
+}
+
+@reflectiveTest
+class CreateFunctionTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_FUNCTION;
+
+  assert_returnType_bool(String lineWithTest) async {
+    await resolveTestUnit('''
+main() {
+  bool b = true;
+  $lineWithTest
+  print(b);
+}
+''');
+    await assertHasFix('''
+main() {
+  bool b = true;
+  $lineWithTest
+  print(b);
+}
+
+bool test() {
+}
+''');
+  }
+
+  test_bottomArgument() async {
+    await resolveTestUnit('''
+main() {
+  test(throw 42);
+}
+''');
+    await assertHasFix('''
+main() {
+  test(throw 42);
+}
+
+void test(param0) {
+}
+''');
+  }
+
+  test_duplicateArgumentNames() async {
+    await resolveTestUnit('''
+class C {
+  int x;
+}
+
+foo(C c1, C c2) {
+  bar(c1.x, c2.x);
+}
+''');
+    await assertHasFix('''
+class C {
+  int x;
+}
+
+foo(C c1, C c2) {
+  bar(c1.x, c2.x);
+}
+
+void bar(int x, int x2) {
+}
+''');
+  }
+
+  test_dynamicArgument() async {
+    await resolveTestUnit('''
+main() {
+  dynamic v;
+  test(v);
+}
+''');
+    await assertHasFix('''
+main() {
+  dynamic v;
+  test(v);
+}
+
+void test(v) {
+}
+''');
+  }
+
+  test_dynamicReturnType() async {
+    await resolveTestUnit('''
+main() {
+  dynamic v = test();
+  print(v);
+}
+''');
+    await assertHasFix('''
+main() {
+  dynamic v = test();
+  print(v);
+}
+
+test() {
+}
+''');
+  }
+
+  test_fromFunction() async {
+    await resolveTestUnit('''
+main() {
+  int v = myUndefinedFunction(1, 2.0, '3');
+    print(v);
+}
+''');
+    await assertHasFix('''
+main() {
+  int v = myUndefinedFunction(1, 2.0, '3');
+    print(v);
+}
+
+int myUndefinedFunction(int i, double d, String s) {
+}
+''');
+  }
+
+  test_fromMethod() async {
+    await resolveTestUnit('''
+class A {
+  main() {
+    int v = myUndefinedFunction(1, 2.0, '3');
+    print(v);
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  main() {
+    int v = myUndefinedFunction(1, 2.0, '3');
+    print(v);
+  }
+}
+
+int myUndefinedFunction(int i, double d, String s) {
+}
+''');
+  }
+
+  test_functionType_cascadeSecond() async {
+    await resolveTestUnit('''
+class A {
+  B ma() => null;
+}
+class B {
+  useFunction(int g(double a, String b)) {}
+}
+
+main() {
+  A a = new A();
+  a..ma().useFunction(test);
+}
+''');
+    await assertHasFix('''
+class A {
+  B ma() => null;
+}
+class B {
+  useFunction(int g(double a, String b)) {}
+}
+
+main() {
+  A a = new A();
+  a..ma().useFunction(test);
+}
+
+int test(double a, String b) {
+}
+''');
+  }
+
+  test_functionType_coreFunction() async {
+    await resolveTestUnit('''
+main() {
+  useFunction(g: test);
+}
+useFunction({Function g}) {}
+''');
+    await assertHasFix('''
+main() {
+  useFunction(g: test);
+}
+useFunction({Function g}) {}
+
+test() {
+}
+''');
+  }
+
+  test_functionType_dynamicArgument() async {
+    await resolveTestUnit('''
+main() {
+  useFunction(test);
+}
+useFunction(int g(a, b)) {}
+''');
+    await assertHasFix('''
+main() {
+  useFunction(test);
+}
+useFunction(int g(a, b)) {}
+
+int test(a, b) {
+}
+''');
+  }
+
+  test_functionType_function() async {
+    await resolveTestUnit('''
+main() {
+  useFunction(test);
+}
+useFunction(int g(double a, String b)) {}
+''');
+    await assertHasFix('''
+main() {
+  useFunction(test);
+}
+useFunction(int g(double a, String b)) {}
+
+int test(double a, String b) {
+}
+''');
+  }
+
+  test_functionType_function_namedArgument() async {
+    await resolveTestUnit('''
+main() {
+  useFunction(g: test);
+}
+useFunction({int g(double a, String b)}) {}
+''');
+    await assertHasFix('''
+main() {
+  useFunction(g: test);
+}
+useFunction({int g(double a, String b)}) {}
+
+int test(double a, String b) {
+}
+''');
+  }
+
+  test_functionType_importType() async {
+    addSource('/home/test/lib/a.dart', r'''
+class A {}
+''');
+    addSource('/home/test/lib/b.dart', r'''
+import 'package:test/a.dart';
+
+useFunction(int g(A a)) {}
+''');
+    await resolveTestUnit('''
+import 'package:test/b.dart';
+
+main() {
+  useFunction(test);
+}
+''');
+    await assertHasFix('''
+import 'package:test/a.dart';
+import 'package:test/b.dart';
+
+main() {
+  useFunction(test);
+}
+
+int test(A a) {
+}
+''');
+  }
+
+  test_functionType_notFunctionType() async {
+    await resolveTestUnit('''
+main(A a) {
+  useFunction(a.test);
+}
+typedef A();
+useFunction(g) {}
+''');
+    await assertNoFix();
+  }
+
+  test_generic_type() async {
+    await resolveTestUnit('''
+class A {
+  List<int> items;
+  main() {
+    process(items);
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  List<int> items;
+  main() {
+    process(items);
+  }
+}
+
+void process(List<int> items) {
+}
+''');
+    assertLinkedGroup(
+        change.linkedEditGroups[2],
+        ['List<int> items) {'],
+        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
+            ['List<int>', 'Iterable<int>', 'Object']));
+  }
+
+  test_generic_typeParameter() async {
+    await resolveTestUnit('''
+class A<T> {
+  Map<int, T> items;
+  main() {
+    process(items);
+  }
+}
+''');
+    await assertHasFix('''
+class A<T> {
+  Map<int, T> items;
+  main() {
+    process(items);
+  }
+}
+
+void process(Map items) {
+}
+''');
+  }
+
+  test_importType() async {
+    addSource('/home/test/lib/lib.dart', r'''
+library lib;
+import 'dart:async';
+Future getFuture() => null;
+''');
+    await resolveTestUnit('''
+import 'lib.dart';
+main() {
+  test(getFuture());
+}
+''');
+    await assertHasFix('''
+import 'lib.dart';
+main() {
+  test(getFuture());
+}
+
+void test(Future future) {
+}
+''');
+  }
+
+  test_nullArgument() async {
+    await resolveTestUnit('''
+main() {
+  test(null);
+}
+''');
+    await assertHasFix('''
+main() {
+  test(null);
+}
+
+void test(param0) {
+}
+''');
+  }
+
+  test_returnType_bool_and_left() async {
+    await assert_returnType_bool("test() && b;");
+  }
+
+  test_returnType_bool_and_right() async {
+    await assert_returnType_bool("b && test();");
+  }
+
+  test_returnType_bool_assert() async {
+    await assert_returnType_bool("assert ( test() );");
+  }
+
+  test_returnType_bool_do() async {
+    await assert_returnType_bool("do {} while ( test() );");
+  }
+
+  test_returnType_bool_if() async {
+    await assert_returnType_bool("if ( test() ) {}");
+  }
+
+  test_returnType_bool_or_left() async {
+    await assert_returnType_bool("test() || b;");
+  }
+
+  test_returnType_bool_or_right() async {
+    await assert_returnType_bool("b || test();");
+  }
+
+  test_returnType_bool_unaryNegation() async {
+    await assert_returnType_bool("!test();");
+  }
+
+  test_returnType_bool_while() async {
+    await assert_returnType_bool("while ( test() ) {}");
+  }
+
+  test_returnType_fromAssignment_eq() async {
+    await resolveTestUnit('''
+main() {
+  int v;
+  v = myUndefinedFunction();
+  print(v);
+}
+''');
+    await assertHasFix('''
+main() {
+  int v;
+  v = myUndefinedFunction();
+  print(v);
+}
+
+int myUndefinedFunction() {
+}
+''');
+  }
+
+  test_returnType_fromAssignment_plusEq() async {
+    await resolveTestUnit('''
+main() {
+  int v;
+  v += myUndefinedFunction();
+  print(v);
+}
+''');
+    await assertHasFix('''
+main() {
+  int v;
+  v += myUndefinedFunction();
+  print(v);
+}
+
+num myUndefinedFunction() {
+}
+''');
+  }
+
+  test_returnType_fromBinary_right() async {
+    await resolveTestUnit('''
+main() {
+  0 + myUndefinedFunction();
+}
+''');
+    await assertHasFix('''
+main() {
+  0 + myUndefinedFunction();
+}
+
+num myUndefinedFunction() {
+}
+''');
+  }
+
+  test_returnType_fromInitializer() async {
+    await resolveTestUnit('''
+main() {
+  int v = myUndefinedFunction();
+  print(v);
+}
+''');
+    await assertHasFix('''
+main() {
+  int v = myUndefinedFunction();
+  print(v);
+}
+
+int myUndefinedFunction() {
+}
+''');
+  }
+
+  test_returnType_fromInvocationArgument() async {
+    await resolveTestUnit('''
+foo(int p) {}
+main() {
+  foo( myUndefinedFunction() );
+}
+''');
+    await assertHasFix('''
+foo(int p) {}
+main() {
+  foo( myUndefinedFunction() );
+}
+
+int myUndefinedFunction() {
+}
+''');
+  }
+
+  test_returnType_fromReturn() async {
+    await resolveTestUnit('''
+int main() {
+  return myUndefinedFunction();
+}
+''');
+    await assertHasFix('''
+int main() {
+  return myUndefinedFunction();
+}
+
+int myUndefinedFunction() {
+}
+''');
+  }
+
+  test_returnType_void() async {
+    await resolveTestUnit('''
+main() {
+  myUndefinedFunction();
+}
+''');
+    await assertHasFix('''
+main() {
+  myUndefinedFunction();
+}
+
+void myUndefinedFunction() {
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_getter_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_getter_test.dart
new file mode 100644
index 0000000..85941b0
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_getter_test.dart
@@ -0,0 +1,363 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CreateGetterTest);
+    defineReflectiveTests(CreateGetterMixinTest);
+  });
+}
+
+@reflectiveTest
+class CreateGetterMixinTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_GETTER;
+
+  test_qualified_instance() async {
+    await resolveTestUnit('''
+mixin M {
+}
+
+main(M m) {
+  int v = m.test;
+  print(v);
+}
+''');
+    await assertHasFix('''
+mixin M {
+  int get test => null;
+}
+
+main(M m) {
+  int v = m.test;
+  print(v);
+}
+''');
+  }
+
+  test_unqualified_instance_assignmentLhs() async {
+    await resolveTestUnit('''
+mixin M {
+  main() {
+    test = 42;
+  }
+}
+''');
+    await assertNoFix();
+  }
+
+  test_unqualified_instance_assignmentRhs() async {
+    await resolveTestUnit('''
+mixin M {
+  main() {
+    int v = test;
+    print(v);
+  }
+}
+''');
+    await assertHasFix('''
+mixin M {
+  int get test => null;
+
+  main() {
+    int v = test;
+    print(v);
+  }
+}
+''');
+  }
+}
+
+@reflectiveTest
+class CreateGetterTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_GETTER;
+
+  test_hint_getter() async {
+    await resolveTestUnit('''
+class A {
+}
+main(A a) {
+  var x = a;
+  int v = x.test;
+  print(v);
+}
+''');
+    await assertHasFix('''
+class A {
+  int get test => null;
+}
+main(A a) {
+  var x = a;
+  int v = x.test;
+  print(v);
+}
+''');
+  }
+
+  test_inSDK() async {
+    await resolveTestUnit('''
+main(List p) {
+  int v = p.foo;
+  print(v);
+}
+''');
+    await assertNoFix();
+  }
+
+  test_location_afterLastGetter() async {
+    await resolveTestUnit('''
+class A {
+  int existingField;
+
+  int get existingGetter => null;
+
+  existingMethod() {}
+}
+main(A a) {
+  int v = a.test;
+  print(v);
+}
+''');
+    await assertHasFix('''
+class A {
+  int existingField;
+
+  int get existingGetter => null;
+
+  int get test => null;
+
+  existingMethod() {}
+}
+main(A a) {
+  int v = a.test;
+  print(v);
+}
+''');
+  }
+
+  test_multiLevel() async {
+    await resolveTestUnit('''
+class A {
+}
+class B {
+  A a;
+}
+class C {
+  B b;
+}
+main(C c) {
+  int v = c.b.a.test;
+  print(v);
+}
+''');
+    await assertHasFix('''
+class A {
+  int get test => null;
+}
+class B {
+  A a;
+}
+class C {
+  B b;
+}
+main(C c) {
+  int v = c.b.a.test;
+  print(v);
+}
+''');
+  }
+
+  test_qualified_instance() async {
+    await resolveTestUnit('''
+class A {
+}
+main(A a) {
+  int v = a.test;
+  print(v);
+}
+''');
+    await assertHasFix('''
+class A {
+  int get test => null;
+}
+main(A a) {
+  int v = a.test;
+  print(v);
+}
+''');
+  }
+
+  test_qualified_instance_differentLibrary() async {
+    addSource('/home/test/lib/other.dart', '''
+/**
+ * A comment to push the offset of the braces for the following class
+ * declaration past the end of the content of the test file. Used to catch an
+ * index out of bounds exception that occurs when using the test source instead
+ * of the target source to compute the location at which to insert the field.
+ */
+class A {
+}
+''');
+
+    await resolveTestUnit('''
+import 'package:test/other.dart';
+
+main(A a) {
+  int v = a.test;
+  print(v);
+}
+''');
+
+    await assertHasFix('''
+/**
+ * A comment to push the offset of the braces for the following class
+ * declaration past the end of the content of the test file. Used to catch an
+ * index out of bounds exception that occurs when using the test source instead
+ * of the target source to compute the location at which to insert the field.
+ */
+class A {
+  int get test => null;
+}
+''', target: '/home/test/lib/other.dart');
+  }
+
+  test_qualified_instance_dynamicType() async {
+    await resolveTestUnit('''
+class A {
+  B b;
+  void f(Object p) {
+    p == b.test;
+  }
+}
+class B {
+}
+''');
+    await assertHasFix('''
+class A {
+  B b;
+  void f(Object p) {
+    p == b.test;
+  }
+}
+class B {
+  get test => null;
+}
+''');
+  }
+
+  test_qualified_propagatedType() async {
+    await resolveTestUnit('''
+class A {
+  A get self => this;
+}
+main() {
+  var a = new A();
+  int v = a.self.test;
+  print(v);
+}
+''');
+    await assertHasFix('''
+class A {
+  A get self => this;
+
+  int get test => null;
+}
+main() {
+  var a = new A();
+  int v = a.self.test;
+  print(v);
+}
+''');
+  }
+
+  test_setterContext() async {
+    await resolveTestUnit('''
+class A {
+}
+main(A a) {
+  a.test = 42;
+}
+''');
+    await assertNoFix();
+  }
+
+  test_unqualified_instance_asInvocationArgument() async {
+    await resolveTestUnit('''
+class A {
+  main() {
+    f(test);
+  }
+}
+f(String s) {}
+''');
+    await assertHasFix('''
+class A {
+  String get test => null;
+
+  main() {
+    f(test);
+  }
+}
+f(String s) {}
+''');
+  }
+
+  test_unqualified_instance_assignmentLhs() async {
+    await resolveTestUnit('''
+class A {
+  main() {
+    test = 42;
+  }
+}
+''');
+    await assertNoFix();
+  }
+
+  test_unqualified_instance_assignmentRhs() async {
+    await resolveTestUnit('''
+class A {
+  main() {
+    int v = test;
+    print(v);
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  int get test => null;
+
+  main() {
+    int v = test;
+    print(v);
+  }
+}
+''');
+  }
+
+  test_unqualified_instance_asStatement() async {
+    await resolveTestUnit('''
+class A {
+  main() {
+    test;
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  get test => null;
+
+  main() {
+    test;
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_local_variable_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_local_variable_test.dart
new file mode 100644
index 0000000..933eec9
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_local_variable_test.dart
@@ -0,0 +1,218 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/protocol_server.dart';
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CreateLocalVariableTest);
+  });
+}
+
+@reflectiveTest
+class CreateLocalVariableTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_LOCAL_VARIABLE;
+
+  test_functionType_named() async {
+    await resolveTestUnit('''
+typedef MY_FUNCTION(int p);
+foo(MY_FUNCTION f) {}
+main() {
+  foo(bar);
+}
+''');
+    await assertHasFix('''
+typedef MY_FUNCTION(int p);
+foo(MY_FUNCTION f) {}
+main() {
+  MY_FUNCTION bar;
+  foo(bar);
+}
+''');
+  }
+
+  test_functionType_named_generic() async {
+    await resolveTestUnit('''
+typedef MY_FUNCTION<T>(T p);
+foo(MY_FUNCTION<int> f) {}
+main() {
+  foo(bar);
+}
+''');
+    await assertHasFix('''
+typedef MY_FUNCTION<T>(T p);
+foo(MY_FUNCTION<int> f) {}
+main() {
+  MY_FUNCTION<int> bar;
+  foo(bar);
+}
+''');
+  }
+
+  test_functionType_synthetic() async {
+    await resolveTestUnit('''
+foo(f(int p)) {}
+main() {
+  foo(bar);
+}
+''');
+    await assertHasFix('''
+foo(f(int p)) {}
+main() {
+  Function(int p) bar;
+  foo(bar);
+}
+''');
+  }
+
+  test_read_typeAssignment() async {
+    await resolveTestUnit('''
+main() {
+  int a = test;
+  print(a);
+}
+''');
+    await assertHasFix('''
+main() {
+  int test;
+  int a = test;
+  print(a);
+}
+''');
+  }
+
+  test_read_typeCondition() async {
+    await resolveTestUnit('''
+main() {
+  if (!test) {
+    print(42);
+  }
+}
+''');
+    await assertHasFix('''
+main() {
+  bool test;
+  if (!test) {
+    print(42);
+  }
+}
+''');
+  }
+
+  test_read_typeInvocationArgument() async {
+    await resolveTestUnit('''
+main() {
+  f(test);
+}
+f(String p) {}
+''');
+    await assertHasFix('''
+main() {
+  String test;
+  f(test);
+}
+f(String p) {}
+''');
+    assertLinkedGroup(change.linkedEditGroups[0], ['String test;']);
+    assertLinkedGroup(change.linkedEditGroups[1], ['test;', 'test);']);
+  }
+
+  test_read_typeInvocationTarget() async {
+    await resolveTestUnit('''
+main() {
+  test.add('hello');
+}
+''');
+    await assertHasFix('''
+main() {
+  var test;
+  test.add('hello');
+}
+''');
+    assertLinkedGroup(change.linkedEditGroups[0], ['test;', 'test.add(']);
+  }
+
+  test_withImport() async {
+    addPackageFile('pkg', 'a/a.dart', '''
+class A {}
+''');
+    addPackageFile('pkg', 'b/b.dart', '''
+class B {}
+''');
+    addPackageFile('pkg', 'c/c.dart', '''
+import 'package:pkg/a/a.dart';
+import 'package:pkg/b/b.dart';
+
+class C {
+  C(A a, B b);
+}
+''');
+
+    await resolveTestUnit('''
+import 'package:pkg/a/a.dart';
+import 'package:pkg/c/c.dart';
+
+main() {
+  A a;
+  new C(a, b);
+}
+''');
+    await assertHasFix('''
+import 'package:pkg/a/a.dart';
+import 'package:pkg/b/b.dart';
+import 'package:pkg/c/c.dart';
+
+main() {
+  A a;
+  B b;
+  new C(a, b);
+}
+''');
+    List<LinkedEditGroup> groups = change.linkedEditGroups;
+    expect(groups, hasLength(2));
+    LinkedEditGroup typeGroup = groups[0];
+    List<Position> typePositions = typeGroup.positions;
+    expect(typePositions, hasLength(1));
+    expect(typePositions[0].offset, 112);
+    LinkedEditGroup nameGroup = groups[1];
+    List<Position> groupPositions = nameGroup.positions;
+    expect(groupPositions, hasLength(2));
+    expect(groupPositions[0].offset, 114);
+    expect(groupPositions[1].offset, 128);
+  }
+
+  test_write_assignment() async {
+    await resolveTestUnit('''
+main() {
+  test = 42;
+}
+''');
+    await assertHasFix('''
+main() {
+  var test = 42;
+}
+''');
+  }
+
+  test_write_assignment_compound() async {
+    await resolveTestUnit('''
+main() {
+  test += 42;
+}
+''');
+    await assertHasFix('''
+main() {
+  int test;
+  test += 42;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_method_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_method_test.dart
new file mode 100644
index 0000000..bf502f1
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_method_test.dart
@@ -0,0 +1,705 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/protocol_server.dart';
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CreateMethodTest);
+    defineReflectiveTests(CreateMethodMixinTest);
+  });
+}
+
+@reflectiveTest
+class CreateMethodMixinTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_METHOD;
+
+  test_createQualified_instance() async {
+    await resolveTestUnit('''
+mixin M {}
+
+main(M m) {
+  m.myUndefinedMethod();
+}
+''');
+    await assertHasFix('''
+mixin M {
+  void myUndefinedMethod() {}
+}
+
+main(M m) {
+  m.myUndefinedMethod();
+}
+''');
+  }
+
+  test_createQualified_static() async {
+    await resolveTestUnit('''
+mixin M {}
+
+main() {
+  M.myUndefinedMethod();
+}
+''');
+    await assertHasFix('''
+mixin M {
+  static void myUndefinedMethod() {}
+}
+
+main() {
+  M.myUndefinedMethod();
+}
+''');
+  }
+
+  test_createUnqualified() async {
+    await resolveTestUnit('''
+mixin M {
+  main() {
+    myUndefinedMethod();
+  }
+}
+''');
+    await assertHasFix('''
+mixin M {
+  main() {
+    myUndefinedMethod();
+  }
+
+  void myUndefinedMethod() {}
+}
+''');
+  }
+
+  test_functionType_method_enclosingMixin_static() async {
+    await resolveTestUnit('''
+mixin M {
+  static foo() {
+    useFunction(test);
+  }
+}
+
+useFunction(int g(double a, String b)) {}
+''');
+    await assertHasFix('''
+mixin M {
+  static foo() {
+    useFunction(test);
+  }
+
+  static int test(double a, String b) {
+  }
+}
+
+useFunction(int g(double a, String b)) {}
+''');
+  }
+
+  test_functionType_method_targetMixin() async {
+    await resolveTestUnit('''
+main(M m) {
+  useFunction(m.test);
+}
+
+mixin M {
+}
+
+useFunction(int g(double a, String b)) {}
+''');
+    await assertHasFix('''
+main(M m) {
+  useFunction(m.test);
+}
+
+mixin M {
+  int test(double a, String b) {
+  }
+}
+
+useFunction(int g(double a, String b)) {}
+''');
+  }
+}
+
+@reflectiveTest
+class CreateMethodTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_METHOD;
+
+  test_createQualified_emptyClassBody() async {
+    await resolveTestUnit('''
+class A {}
+main() {
+  A.myUndefinedMethod();
+}
+''');
+    await assertHasFix('''
+class A {
+  static void myUndefinedMethod() {}
+}
+main() {
+  A.myUndefinedMethod();
+}
+''');
+  }
+
+  test_createQualified_fromClass() async {
+    await resolveTestUnit('''
+class A {
+}
+main() {
+  A.myUndefinedMethod();
+}
+''');
+    await assertHasFix('''
+class A {
+  static void myUndefinedMethod() {}
+}
+main() {
+  A.myUndefinedMethod();
+}
+''');
+  }
+
+  test_createQualified_fromClass_hasOtherMember() async {
+    await resolveTestUnit('''
+class A {
+  foo() {}
+}
+main() {
+  A.myUndefinedMethod();
+}
+''');
+    await assertHasFix('''
+class A {
+  foo() {}
+
+  static void myUndefinedMethod() {}
+}
+main() {
+  A.myUndefinedMethod();
+}
+''');
+  }
+
+  test_createQualified_fromInstance() async {
+    await resolveTestUnit('''
+class A {
+}
+main(A a) {
+  a.myUndefinedMethod();
+}
+''');
+    await assertHasFix('''
+class A {
+  void myUndefinedMethod() {}
+}
+main(A a) {
+  a.myUndefinedMethod();
+}
+''');
+  }
+
+  test_createQualified_targetIsFunctionType() async {
+    await resolveTestUnit('''
+typedef A();
+main() {
+  A.myUndefinedMethod();
+}
+''');
+    await assertNoFix();
+  }
+
+  test_createQualified_targetIsUnresolved() async {
+    await resolveTestUnit('''
+main() {
+  NoSuchClass.myUndefinedMethod();
+}
+''');
+    await assertNoFix();
+  }
+
+  test_createUnqualified_duplicateArgumentNames() async {
+    await resolveTestUnit('''
+class C {
+  int x;
+}
+
+class D {
+  foo(C c1, C c2) {
+    bar(c1.x, c2.x);
+  }
+}''');
+    await assertHasFix('''
+class C {
+  int x;
+}
+
+class D {
+  foo(C c1, C c2) {
+    bar(c1.x, c2.x);
+  }
+
+  void bar(int x, int x2) {}
+}''');
+  }
+
+  test_createUnqualified_parameters() async {
+    await resolveTestUnit('''
+class A {
+  main() {
+    myUndefinedMethod(0, 1.0, '3');
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  main() {
+    myUndefinedMethod(0, 1.0, '3');
+  }
+
+  void myUndefinedMethod(int i, double d, String s) {}
+}
+''');
+    // linked positions
+    int index = 0;
+    assertLinkedGroup(
+        change.linkedEditGroups[index++], ['void myUndefinedMethod(']);
+    assertLinkedGroup(change.linkedEditGroups[index++],
+        ['myUndefinedMethod(0', 'myUndefinedMethod(int']);
+    assertLinkedGroup(
+        change.linkedEditGroups[index++],
+        ['int i'],
+        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
+            ['int', 'num', 'Object', 'Comparable<num>']));
+    assertLinkedGroup(change.linkedEditGroups[index++], ['i,']);
+    assertLinkedGroup(
+        change.linkedEditGroups[index++],
+        ['double d'],
+        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
+            ['double', 'num', 'Object', 'Comparable<num>']));
+    assertLinkedGroup(change.linkedEditGroups[index++], ['d,']);
+    assertLinkedGroup(
+        change.linkedEditGroups[index++],
+        ['String s'],
+        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
+            ['String', 'Object', 'Comparable<String>', 'Pattern']));
+    assertLinkedGroup(change.linkedEditGroups[index++], ['s)']);
+  }
+
+  test_createUnqualified_parameters_named() async {
+    await resolveTestUnit('''
+class A {
+  main() {
+    myUndefinedMethod(0, bbb: 1.0, ccc: '2');
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  main() {
+    myUndefinedMethod(0, bbb: 1.0, ccc: '2');
+  }
+
+  void myUndefinedMethod(int i, {double bbb, String ccc}) {}
+}
+''');
+    // linked positions
+    int index = 0;
+    assertLinkedGroup(
+        change.linkedEditGroups[index++], ['void myUndefinedMethod(']);
+    assertLinkedGroup(change.linkedEditGroups[index++],
+        ['myUndefinedMethod(0', 'myUndefinedMethod(int']);
+    assertLinkedGroup(
+        change.linkedEditGroups[index++],
+        ['int i'],
+        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
+            ['int', 'num', 'Object', 'Comparable<num>']));
+    assertLinkedGroup(change.linkedEditGroups[index++], ['i,']);
+    assertLinkedGroup(
+        change.linkedEditGroups[index++],
+        ['double bbb'],
+        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
+            ['double', 'num', 'Object', 'Comparable<num>']));
+    assertLinkedGroup(
+        change.linkedEditGroups[index++],
+        ['String ccc'],
+        expectedSuggestions(LinkedEditSuggestionKind.TYPE,
+            ['String', 'Object', 'Comparable<String>', 'Pattern']));
+  }
+
+  test_createUnqualified_returnType() async {
+    await resolveTestUnit('''
+class A {
+  main() {
+    int v = myUndefinedMethod();
+    print(v);
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  main() {
+    int v = myUndefinedMethod();
+    print(v);
+  }
+
+  int myUndefinedMethod() {}
+}
+''');
+    // linked positions
+    assertLinkedGroup(change.linkedEditGroups[0], ['int myUndefinedMethod(']);
+    assertLinkedGroup(change.linkedEditGroups[1],
+        ['myUndefinedMethod();', 'myUndefinedMethod() {']);
+  }
+
+  test_createUnqualified_staticFromField() async {
+    await resolveTestUnit('''
+class A {
+  static var f = myUndefinedMethod();
+}
+''');
+    await assertHasFix('''
+class A {
+  static var f = myUndefinedMethod();
+
+  static myUndefinedMethod() {}
+}
+''');
+  }
+
+  test_createUnqualified_staticFromMethod() async {
+    await resolveTestUnit('''
+class A {
+  static main() {
+    myUndefinedMethod();
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  static main() {
+    myUndefinedMethod();
+  }
+
+  static void myUndefinedMethod() {}
+}
+''');
+  }
+
+  test_functionType_method_enclosingClass_static() async {
+    await resolveTestUnit('''
+class A {
+  static foo() {
+    useFunction(test);
+  }
+}
+useFunction(int g(double a, String b)) {}
+''');
+    await assertHasFix('''
+class A {
+  static foo() {
+    useFunction(test);
+  }
+
+  static int test(double a, String b) {
+  }
+}
+useFunction(int g(double a, String b)) {}
+''');
+  }
+
+  test_functionType_method_enclosingClass_static2() async {
+    await resolveTestUnit('''
+class A {
+  var f;
+  A() : f = useFunction(test);
+}
+useFunction(int g(double a, String b)) {}
+''');
+    await assertHasFix('''
+class A {
+  var f;
+  A() : f = useFunction(test);
+
+  static int test(double a, String b) {
+  }
+}
+useFunction(int g(double a, String b)) {}
+''');
+  }
+
+  test_functionType_method_targetClass() async {
+    await resolveTestUnit('''
+main(A a) {
+  useFunction(a.test);
+}
+class A {
+}
+useFunction(int g(double a, String b)) {}
+''');
+    await assertHasFix('''
+main(A a) {
+  useFunction(a.test);
+}
+class A {
+  int test(double a, String b) {
+  }
+}
+useFunction(int g(double a, String b)) {}
+''');
+  }
+
+  test_functionType_method_targetClass_hasOtherMember() async {
+    await resolveTestUnit('''
+main(A a) {
+  useFunction(a.test);
+}
+class A {
+  m() {}
+}
+useFunction(int g(double a, String b)) {}
+''');
+    await assertHasFix('''
+main(A a) {
+  useFunction(a.test);
+}
+class A {
+  m() {}
+
+  int test(double a, String b) {
+  }
+}
+useFunction(int g(double a, String b)) {}
+''');
+  }
+
+  test_functionType_notFunctionType() async {
+    await resolveTestUnit('''
+main(A a) {
+  useFunction(a.test);
+}
+typedef A();
+useFunction(g) {}
+''');
+    await assertNoFix();
+  }
+
+  test_functionType_unknownTarget() async {
+    await resolveTestUnit('''
+main(A a) {
+  useFunction(a.test);
+}
+class A {
+}
+useFunction(g) {}
+''');
+    await assertNoFix();
+  }
+
+  test_generic_argumentType() async {
+    await resolveTestUnit('''
+class A<T> {
+  B b;
+  Map<int, T> items;
+  main() {
+    b.process(items);
+  }
+}
+
+class B {
+}
+''');
+    await assertHasFix('''
+class A<T> {
+  B b;
+  Map<int, T> items;
+  main() {
+    b.process(items);
+  }
+}
+
+class B {
+  void process(Map items) {}
+}
+''');
+  }
+
+  test_generic_literal() async {
+    await resolveTestUnit('''
+class A {
+  B b;
+  List<int> items;
+  main() {
+    b.process(items);
+  }
+}
+
+class B {}
+''');
+    await assertHasFix('''
+class A {
+  B b;
+  List<int> items;
+  main() {
+    b.process(items);
+  }
+}
+
+class B {
+  void process(List<int> items) {}
+}
+''');
+  }
+
+  test_generic_local() async {
+    await resolveTestUnit('''
+class A<T> {
+  List<T> items;
+  main() {
+    process(items);
+  }
+}
+''');
+    await assertHasFix('''
+class A<T> {
+  List<T> items;
+  main() {
+    process(items);
+  }
+
+  void process(List<T> items) {}
+}
+''');
+  }
+
+  test_generic_returnType() async {
+    await resolveTestUnit('''
+class A<T> {
+  main() {
+    T t = new B().compute();
+    print(t);
+  }
+}
+
+class B {
+}
+''');
+    await assertHasFix('''
+class A<T> {
+  main() {
+    T t = new B().compute();
+    print(t);
+  }
+}
+
+class B {
+  compute() {}
+}
+''');
+  }
+
+  test_hint_createQualified_fromInstance() async {
+    await resolveTestUnit('''
+class A {
+}
+main() {
+  var a = new A();
+  a.myUndefinedMethod();
+}
+''');
+    await assertHasFix('''
+class A {
+  void myUndefinedMethod() {}
+}
+main() {
+  var a = new A();
+  a.myUndefinedMethod();
+}
+''');
+  }
+
+  test_inSDK() async {
+    await resolveTestUnit('''
+main() {
+  List.foo();
+}
+''');
+    await assertNoFix();
+  }
+
+  test_parameterType_differentPrefixInTargetUnit() async {
+    String code2 = r'''
+import 'test3.dart' as bbb;
+export 'test3.dart';
+
+class D {
+}
+''';
+
+    addSource('/home/test/lib/test2.dart', code2);
+    addSource('/home/test/lib/test3.dart', r'''
+library test3;
+class E {}
+''');
+
+    await resolveTestUnit('''
+import 'test2.dart' as aaa;
+
+main(aaa.D d, aaa.E e) {
+  d.foo(e);
+}
+''');
+
+    await assertHasFix('''
+import 'test3.dart' as bbb;
+export 'test3.dart';
+
+class D {
+  void foo(bbb.E e) {}
+}
+''', target: '/home/test/lib/test2.dart');
+  }
+
+  test_parameterType_inTargetUnit() async {
+    addSource('/home/test/lib/test2.dart', r'''
+class D {
+}
+
+class E {}
+''');
+
+    await resolveTestUnit('''
+import 'test2.dart' as test2;
+
+main(test2.D d, test2.E e) {
+  d.foo(e);
+}
+''');
+
+    await assertHasFix('''
+class D {
+  void foo(E e) {}
+}
+
+class E {}
+''', target: '/home/test/lib/test2.dart');
+  }
+
+  test_targetIsEnum() async {
+    await resolveTestUnit('''
+enum MyEnum {A, B}
+main() {
+  MyEnum.foo();
+}
+''');
+    await assertNoFix();
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_missing_overrides_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_missing_overrides_test.dart
new file mode 100644
index 0000000..7656709
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_missing_overrides_test.dart
@@ -0,0 +1,520 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/protocol_server.dart';
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CreateMissingOverridesTest);
+  });
+}
+
+@reflectiveTest
+class CreateMissingOverridesTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_MISSING_OVERRIDES;
+
+  test_field_untyped() async {
+    await resolveTestUnit('''
+class A {
+  var f;
+}
+
+class B implements A {
+}
+''');
+    await assertHasFix('''
+class A {
+  var f;
+}
+
+class B implements A {
+  @override
+  var f;
+}
+''');
+  }
+
+  test_functionTypeAlias() async {
+    await resolveTestUnit('''
+typedef int Binary(int left, int right);
+
+abstract class Emulator {
+  void performBinary(Binary binary);
+}
+
+class MyEmulator extends Emulator {
+}
+''');
+    await assertHasFix('''
+typedef int Binary(int left, int right);
+
+abstract class Emulator {
+  void performBinary(Binary binary);
+}
+
+class MyEmulator extends Emulator {
+  @override
+  void performBinary(Binary binary) {
+    // TODO: implement performBinary
+  }
+}
+''');
+  }
+
+  test_functionTypedParameter() async {
+    await resolveTestUnit('''
+abstract class A {
+  void forEach(int f(double p1, String p2));
+}
+
+class B extends A {
+}
+''');
+    await assertHasFix('''
+abstract class A {
+  void forEach(int f(double p1, String p2));
+}
+
+class B extends A {
+  @override
+  void forEach(int Function(double p1, String p2) f) {
+    // TODO: implement forEach
+  }
+}
+''');
+  }
+
+  test_generics_typeArguments() async {
+    await resolveTestUnit('''
+class Iterator<T> {
+}
+
+abstract class IterableMixin<T> {
+  Iterator<T> get iterator;
+}
+
+class Test extends IterableMixin<int> {
+}
+''');
+    await assertHasFix('''
+class Iterator<T> {
+}
+
+abstract class IterableMixin<T> {
+  Iterator<T> get iterator;
+}
+
+class Test extends IterableMixin<int> {
+  @override
+  // TODO: implement iterator
+  Iterator<int> get iterator => null;
+}
+''');
+  }
+
+  test_generics_typeParameters() async {
+    await resolveTestUnit('''
+abstract class ItemProvider<T> {
+  List<T> getItems();
+}
+
+class Test<V> extends ItemProvider<V> {
+}
+''');
+    await assertHasFix('''
+abstract class ItemProvider<T> {
+  List<T> getItems();
+}
+
+class Test<V> extends ItemProvider<V> {
+  @override
+  List<V> getItems() {
+    // TODO: implement getItems
+    return null;
+  }
+}
+''');
+  }
+
+  test_getter() async {
+    await resolveTestUnit('''
+abstract class A {
+  get g1;
+  int get g2;
+}
+
+class B extends A {
+}
+''');
+    await assertHasFix('''
+abstract class A {
+  get g1;
+  int get g2;
+}
+
+class B extends A {
+  @override
+  // TODO: implement g1
+  get g1 => null;
+
+  @override
+  // TODO: implement g2
+  int get g2 => null;
+}
+''');
+  }
+
+  test_importPrefix() async {
+    await resolveTestUnit('''
+import 'dart:async' as aaa;
+abstract class A {
+  Map<aaa.Future, List<aaa.Future>> g(aaa.Future p);
+}
+
+class B extends A {
+}
+''');
+    await assertHasFix('''
+import 'dart:async' as aaa;
+abstract class A {
+  Map<aaa.Future, List<aaa.Future>> g(aaa.Future p);
+}
+
+class B extends A {
+  @override
+  Map<aaa.Future, List<aaa.Future>> g(aaa.Future p) {
+    // TODO: implement g
+    return null;
+  }
+}
+''');
+  }
+
+  test_mergeToField_getterSetter() async {
+    await resolveTestUnit('''
+class A {
+  int ma;
+  void mb() {}
+  double mc;
+}
+
+class B implements A {
+}
+''');
+    await assertHasFix('''
+class A {
+  int ma;
+  void mb() {}
+  double mc;
+}
+
+class B implements A {
+  @override
+  int ma;
+
+  @override
+  double mc;
+
+  @override
+  void mb() {
+    // TODO: implement mb
+  }
+}
+''');
+  }
+
+  test_method() async {
+    await resolveTestUnit('''
+abstract class A {
+  void m1();
+  int m2();
+  String m3(int p1, double p2, Map<int, List<String>> p3);
+  String m4(p1, p2);
+  String m5(p1, [int p2 = 2, int p3, p4 = 4]);
+  String m6(p1, {int p2 = 2, int p3, p4: 4});
+}
+
+class B extends A {
+}
+''');
+    String expectedCode = '''
+abstract class A {
+  void m1();
+  int m2();
+  String m3(int p1, double p2, Map<int, List<String>> p3);
+  String m4(p1, p2);
+  String m5(p1, [int p2 = 2, int p3, p4 = 4]);
+  String m6(p1, {int p2 = 2, int p3, p4: 4});
+}
+
+class B extends A {
+  @override
+  void m1() {
+    // TODO: implement m1
+  }
+
+  @override
+  int m2() {
+    // TODO: implement m2
+    return null;
+  }
+
+  @override
+  String m3(int p1, double p2, Map<int, List<String>> p3) {
+    // TODO: implement m3
+    return null;
+  }
+
+  @override
+  String m4(p1, p2) {
+    // TODO: implement m4
+    return null;
+  }
+
+  @override
+  String m5(p1, [int p2 = 2, int p3, p4 = 4]) {
+    // TODO: implement m5
+    return null;
+  }
+
+  @override
+  String m6(p1, {int p2 = 2, int p3, p4 = 4}) {
+    // TODO: implement m6
+    return null;
+  }
+}
+''';
+    await assertHasFix(expectedCode);
+    {
+      // end position should be on "m1", not on "m2", "m3", etc.
+      Position endPosition = change.selection;
+      expect(endPosition, isNotNull);
+      expect(endPosition.file, testFile);
+      int endOffset = endPosition.offset;
+      String endString = expectedCode.substring(endOffset, endOffset + 25);
+      expect(endString, contains('m1'));
+      expect(endString, isNot(contains('m2')));
+      expect(endString, isNot(contains('m3')));
+      expect(endString, isNot(contains('m4')));
+      expect(endString, isNot(contains('m5')));
+      expect(endString, isNot(contains('m6')));
+    }
+  }
+
+  test_method_emptyClassBody() async {
+    await resolveTestUnit('''
+abstract class A {
+  void foo();
+}
+
+class B extends A {}
+''');
+    await assertHasFix('''
+abstract class A {
+  void foo();
+}
+
+class B extends A {
+  @override
+  void foo() {
+    // TODO: implement foo
+  }
+}
+''');
+  }
+
+  test_method_generic() async {
+    await resolveTestUnit('''
+class C<T> {}
+class V<E> {}
+
+abstract class A {
+  E1 foo<E1, E2 extends C<int>>(V<E2> v);
+}
+
+class B implements A {
+}
+''');
+    await assertHasFix('''
+class C<T> {}
+class V<E> {}
+
+abstract class A {
+  E1 foo<E1, E2 extends C<int>>(V<E2> v);
+}
+
+class B implements A {
+  @override
+  E1 foo<E1, E2 extends C<int>>(V<E2> v) {
+    // TODO: implement foo
+    return null;
+  }
+}
+''');
+  }
+
+  test_method_generic_withBounds() async {
+    // https://github.com/dart-lang/sdk/issues/31199
+    await resolveTestUnit('''
+abstract class A<K, V> {
+  List<T> foo<T extends V>(K key);
+}
+
+class B<K, V> implements A<K, V> {
+}
+''');
+    await assertHasFix('''
+abstract class A<K, V> {
+  List<T> foo<T extends V>(K key);
+}
+
+class B<K, V> implements A<K, V> {
+  @override
+  List<T> foo<T extends V>(K key) {
+    // TODO: implement foo
+    return null;
+  }
+}
+''');
+  }
+
+  test_method_genericClass2() async {
+    await resolveTestUnit('''
+class A<R> {
+  R foo(int a) => null;
+}
+
+class B<R> extends A<R> {
+  R bar(double b) => null;
+}
+
+class X implements B<bool> {
+}
+''');
+    await assertHasFix('''
+class A<R> {
+  R foo(int a) => null;
+}
+
+class B<R> extends A<R> {
+  R bar(double b) => null;
+}
+
+class X implements B<bool> {
+  @override
+  bool bar(double b) {
+    // TODO: implement bar
+    return null;
+  }
+
+  @override
+  bool foo(int a) {
+    // TODO: implement foo
+    return null;
+  }
+}
+''');
+  }
+
+  test_method_notEmptyClassBody() async {
+    await resolveTestUnit('''
+abstract class A {
+  void foo();
+}
+
+class B extends A {
+  void bar() {}
+}
+''');
+    await assertHasFix('''
+abstract class A {
+  void foo();
+}
+
+class B extends A {
+  void bar() {}
+
+  @override
+  void foo() {
+    // TODO: implement foo
+  }
+}
+''');
+  }
+
+  test_operator() async {
+    await resolveTestUnit('''
+abstract class A {
+  int operator [](int index);
+  void operator []=(int index, String value);
+}
+
+class B extends A {
+}
+''');
+    await assertHasFix('''
+abstract class A {
+  int operator [](int index);
+  void operator []=(int index, String value);
+}
+
+class B extends A {
+  @override
+  int operator [](int index) {
+    // TODO: implement []
+    return null;
+  }
+
+  @override
+  void operator []=(int index, String value) {
+    // TODO: implement []=
+  }
+}
+''');
+  }
+
+  test_setter() async {
+    await resolveTestUnit('''
+abstract class A {
+  set s1(x);
+  set s2(int x);
+  void set s3(String x);
+}
+
+class B extends A {
+}
+''');
+    await assertHasFix('''
+abstract class A {
+  set s1(x);
+  set s2(int x);
+  void set s3(String x);
+}
+
+class B extends A {
+  @override
+  void set s1(x) {
+    // TODO: implement s1
+  }
+
+  @override
+  void set s2(int x) {
+    // TODO: implement s2
+  }
+
+  @override
+  void set s3(String x) {
+    // TODO: implement s3
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_mixin_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_mixin_test.dart
new file mode 100644
index 0000000..463f417
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_mixin_test.dart
@@ -0,0 +1,160 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CreateMixinTest);
+  });
+}
+
+@reflectiveTest
+class CreateMixinTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_MIXIN;
+
+  test_hasUnresolvedPrefix() async {
+    await resolveTestUnit('''
+main() {
+  prefix.Test v = null;
+  print(v);
+}
+''');
+    await assertNoFix();
+  }
+
+  test_inLibraryOfPrefix() async {
+    String libCode = r'''
+class A {}
+''';
+    addSource('/home/test/lib/lib.dart', libCode);
+    await resolveTestUnit('''
+import 'lib.dart' as lib;
+
+main() {
+  lib.A a = null;
+  lib.Test t = null;
+  print('\$a \$t');
+}
+''');
+    await assertHasFix('''
+class A {}
+
+mixin Test {
+}
+''', target: '/home/test/lib/lib.dart');
+    expect(change.linkedEditGroups, hasLength(1));
+  }
+
+  test_innerLocalFunction() async {
+    await resolveTestUnit('''
+f() {
+  g() {
+    Test v = null;
+    print(v);
+  }
+  g();
+}
+''');
+    await assertHasFix('''
+f() {
+  g() {
+    Test v = null;
+    print(v);
+  }
+  g();
+}
+
+mixin Test {
+}
+''');
+    assertLinkedGroup(change.linkedEditGroups[0], ['Test v =', 'Test {']);
+  }
+
+  test_instanceCreation_withNew() async {
+    await resolveTestUnit('''
+main() {
+  new Test();
+}
+''');
+    await assertNoFix();
+  }
+
+  test_instanceCreation_withoutNew() async {
+    await resolveTestUnit('''
+main() {
+  Test();
+}
+''');
+    await assertNoFix();
+  }
+
+  test_itemOfList() async {
+    await resolveTestUnit('''
+main() {
+  var a = [Test];
+  print(a);
+}
+''');
+    await assertHasFix('''
+main() {
+  var a = [Test];
+  print(a);
+}
+
+mixin Test {
+}
+''');
+    assertLinkedGroup(change.linkedEditGroups[0], ['Test];', 'Test {']);
+  }
+
+  test_itemOfList_inAnnotation() async {
+    await resolveTestUnit('''
+class MyAnnotation {
+  const MyAnnotation(a, b);
+}
+@MyAnnotation(int, const [Test])
+main() {}
+''');
+    await assertHasFix('''
+class MyAnnotation {
+  const MyAnnotation(a, b);
+}
+@MyAnnotation(int, const [Test])
+main() {}
+
+mixin Test {
+}
+''', errorFilter: (error) {
+      return error.errorCode == StaticWarningCode.UNDEFINED_IDENTIFIER;
+    });
+    assertLinkedGroup(change.linkedEditGroups[0], ['Test])', 'Test {']);
+  }
+
+  test_simple() async {
+    await resolveTestUnit('''
+main() {
+  Test v = null;
+  print(v);
+}
+''');
+    await assertHasFix('''
+main() {
+  Test v = null;
+  print(v);
+}
+
+mixin Test {
+}
+''');
+    assertLinkedGroup(change.linkedEditGroups[0], ['Test v =', 'Test {']);
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/create_no_such_method_test.dart b/pkg/analysis_server/test/src/services/correction/fix/create_no_such_method_test.dart
new file mode 100644
index 0000000..5799c31
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/create_no_such_method_test.dart
@@ -0,0 +1,57 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CreateNoSuchMethodTest);
+  });
+}
+
+@reflectiveTest
+class CreateNoSuchMethodTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.CREATE_NO_SUCH_METHOD;
+
+  test_class() async {
+    await resolveTestUnit('''
+abstract class A {
+  m1();
+  int m2();
+}
+
+class B extends A {
+  existing() {}
+}
+''');
+    await assertHasFix('''
+abstract class A {
+  m1();
+  int m2();
+}
+
+class B extends A {
+  existing() {}
+
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+''');
+  }
+
+  test_classTypeAlias() async {
+    await resolveTestUnit('''
+abstract class A {
+  m();
+}
+
+class B = Object with A;
+''');
+    await assertNoFix();
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/extend_class_for_mixin_test.dart b/pkg/analysis_server/test/src/services/correction/fix/extend_class_for_mixin_test.dart
new file mode 100644
index 0000000..d65e90a
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/extend_class_for_mixin_test.dart
@@ -0,0 +1,79 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ExtendClassForMixinTest);
+  });
+}
+
+@reflectiveTest
+class ExtendClassForMixinTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.EXTEND_CLASS_FOR_MIXIN;
+
+  test_missingClass_withExtends() async {
+    await resolveTestUnit('''
+class A {}
+class B {}
+mixin M on B {}
+class C extends A with M {}
+''');
+    await assertNoFix();
+  }
+
+  test_missingClass_withoutExtends_withImplements() async {
+    await resolveTestUnit('''
+class A {}
+class B {}
+mixin M on B {}
+class C with M implements A {}
+''');
+    await assertHasFix('''
+class A {}
+class B {}
+mixin M on B {}
+class C extends B with M implements A {}
+''');
+  }
+
+  test_missingClass_withoutExtends_withoutImplements() async {
+    await resolveTestUnit('''
+class A {}
+mixin M on A {}
+class C with M {}
+''');
+    await assertHasFix('''
+class A {}
+mixin M on A {}
+class C extends A with M {}
+''');
+  }
+
+  test_missingMixin_withExtends() async {
+    await resolveTestUnit('''
+class A {}
+mixin M {}
+mixin N on M {}
+class C extends A with N {}
+''');
+    await assertNoFix();
+  }
+
+  @failingTest
+  test_missingMixin_withoutExtends() async {
+    await resolveTestUnit('''
+mixin M {}
+mixin N on M {}
+class C with N {}
+''');
+    await assertNoFix();
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/fix_processor.dart b/pkg/analysis_server/test/src/services/correction/fix/fix_processor.dart
new file mode 100644
index 0000000..76cc4ce
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/fix_processor.dart
@@ -0,0 +1,265 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analysis_server/plugin/edit/fix/fix_core.dart';
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer/error/error.dart';
+import 'package:analyzer/src/dart/error/lint_codes.dart';
+import 'package:analyzer_plugin/protocol/protocol_common.dart'
+    hide AnalysisError;
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test/test.dart';
+
+import '../../../../abstract_single_unit.dart';
+
+/// A base class defining support for writing fix processor tests that are
+/// specific to fixes associated with lints that use the FixKind.
+abstract class FixProcessorLintTest extends FixProcessorTest {
+  /// Return the lint code being tested.
+  String get lintCode;
+
+  /// Find the error that is to be fixed by computing the errors in the file,
+  /// using the [errorFilter] to filter out errors that should be ignored, and
+  /// expecting that there is a single remaining error. The error filter should
+  /// return `true` if the error should not be ignored.
+  Future<AnalysisError> _findErrorToFix(
+      bool Function(AnalysisError) errorFilter,
+      {int length}) async {
+    int index = testCode.indexOf('/*LINT*/');
+    if (index < 0) {
+      fail('Missing "/*LINT*/" marker');
+    }
+    return new AnalysisError(testSource, index + '/*LINT*/'.length, length ?? 0,
+        new LintCode(lintCode, '<ignored>'));
+  }
+}
+
+/// A base class defining support for writing fix processor tests.
+abstract class FixProcessorTest extends AbstractSingleUnitTest {
+  /// The errors in the file for which fixes are being computed.
+  List<AnalysisError> _errors;
+
+  /// The source change associated with the fix that was found, or `null` if
+  /// neither [assertHasFix] nor [assertHasFixAllFix] has been invoked.
+  SourceChange change;
+
+  /// The result of applying the [change] to the file content, or `null` if
+  /// neither [assertHasFix] nor [assertHasFixAllFix] has been invoked.
+  String resultCode;
+
+  /// Return the kind of fixes being tested by this test class.
+  FixKind get kind;
+
+  Future<void> assertHasFix(String expected,
+      {bool Function(AnalysisError) errorFilter,
+      int length,
+      String target}) async {
+    AnalysisError error = await _findErrorToFix(errorFilter, length: length);
+    Fix fix = await _assertHasFix(error);
+    change = fix.change;
+
+    // apply to "file"
+    List<SourceFileEdit> fileEdits = change.edits;
+    expect(fileEdits, hasLength(1));
+
+    String fileContent = testCode;
+    if (target != null) {
+      expect(fileEdits.first.file, convertPath(target));
+      fileContent = getFile(target).readAsStringSync();
+    }
+
+    resultCode = SourceEdit.applySequence(fileContent, change.edits[0].edits);
+    expect(resultCode, expected);
+  }
+
+  assertHasFixAllFix(ErrorCode errorCode, String expected,
+      {String target}) async {
+    AnalysisError error = await _findErrorToFixOfType(errorCode);
+    Fix fix = await _assertHasFixAllFix(error);
+    change = fix.change;
+
+    // apply to "file"
+    List<SourceFileEdit> fileEdits = change.edits;
+    expect(fileEdits, hasLength(1));
+
+    String fileContent = testCode;
+    if (target != null) {
+      expect(fileEdits.first.file, convertPath(target));
+      fileContent = getFile(target).readAsStringSync();
+    }
+
+    resultCode = SourceEdit.applySequence(fileContent, change.edits[0].edits);
+    expect(resultCode, expected);
+  }
+
+  Future<void> assertHasFixWithoutApplying(
+      {bool Function(AnalysisError) errorFilter}) async {
+    AnalysisError error = await _findErrorToFix(errorFilter);
+    Fix fix = await _assertHasFix(error);
+    change = fix.change;
+  }
+
+  void assertLinkedGroup(LinkedEditGroup group, List<String> expectedStrings,
+      [List<LinkedEditSuggestion> expectedSuggestions]) {
+    List<Position> expectedPositions = _findResultPositions(expectedStrings);
+    expect(group.positions, unorderedEquals(expectedPositions));
+    if (expectedSuggestions != null) {
+      expect(group.suggestions, unorderedEquals(expectedSuggestions));
+    }
+  }
+
+  /// Compute fixes for all of the errors in the test file to effectively assert
+  /// that no exceptions will be thrown by doing so.
+  Future<void> assertNoExceptions() async {
+    List<AnalysisError> errors = await _computeErrors();
+    for (var error in errors) {
+      await _computeFixes(error);
+    }
+  }
+
+  /// Compute fixes and ensure that there is no fix of the [kind] being tested by
+  /// this class.
+  Future<void> assertNoFix({bool Function(AnalysisError) errorFilter}) async {
+    AnalysisError error = await _findErrorToFix(errorFilter);
+    await _assertNoFix(error);
+  }
+
+  List<LinkedEditSuggestion> expectedSuggestions(
+      LinkedEditSuggestionKind kind, List<String> values) {
+    return values.map((value) {
+      return new LinkedEditSuggestion(value, kind);
+    }).toList();
+  }
+
+  @override
+  void setUp() {
+    super.setUp();
+    verifyNoTestUnitErrors = false;
+  }
+
+  /// Computes fixes and verifies that there is a fix for the given [error] of
+  /// the appropriate kind.
+  Future<Fix> _assertHasFix(AnalysisError error) async {
+    // Compute the fixes for this AnalysisError
+    final List<Fix> fixes = await _computeFixes(error);
+
+    // Assert that none of the fixes are a fix-all fix.
+    Fix foundFix = null;
+    for (Fix fix in fixes) {
+      if (fix.isFixAllFix()) {
+        fail('A fix-all fix was found for the error: $error '
+            'in the computed set of fixes:\n${fixes.join('\n')}');
+      } else if (fix.kind == kind) {
+        foundFix ??= fix;
+      }
+    }
+    if (foundFix == null) {
+      fail('Expected to find fix $kind in\n${fixes.join('\n')}');
+    }
+    return foundFix;
+  }
+
+  /// Computes fixes and verifies that there is a fix for the given [error] of
+  /// the appropriate kind.
+  Future<Fix> _assertHasFixAllFix(AnalysisError error) async {
+    if (!kind.canBeAppliedTogether()) {
+      fail('Expected to find and return fix-all FixKind for $kind, '
+          'but kind.canBeAppliedTogether is ${kind.canBeAppliedTogether}');
+    }
+
+    // Compute the fixes for the error.
+    List<Fix> fixes = await _computeFixes(error);
+
+    // Assert that there exists such a fix in the list.
+    Fix foundFix = null;
+    for (Fix fix in fixes) {
+      if (fix.kind == kind && fix.isFixAllFix()) {
+        foundFix = fix;
+        break;
+      }
+    }
+    if (foundFix == null) {
+      fail('No fix-all fix was found for the error: $error '
+          'in the computed set of fixes:\n${fixes.join('\n')}');
+    }
+    return foundFix;
+  }
+
+  Future<void> _assertNoFix(AnalysisError error) async {
+    List<Fix> fixes = await _computeFixes(error);
+    for (Fix fix in fixes) {
+      if (fix.kind == kind) {
+        fail('Unexpected fix $kind in\n${fixes.join('\n')}');
+      }
+    }
+  }
+
+  Future<List<AnalysisError>> _computeErrors() async {
+    if (_errors == null) {
+      if (testAnalysisResult != null) {
+        _errors = testAnalysisResult.errors;
+      }
+      if (_errors == null) {
+        var result = await session.getResolvedUnit(testFile);
+        _errors = result.errors;
+      }
+    }
+    return _errors;
+  }
+
+  /// Computes fixes for the given [error] in [testUnit].
+  Future<List<Fix>> _computeFixes(AnalysisError error) async {
+    var context = new DartFixContextImpl(testAnalysisResult, error);
+    return await new DartFixContributor().computeFixes(context);
+  }
+
+  /// Find the error that is to be fixed by computing the errors in the file,
+  /// using the [errorFilter] to filter out errors that should be ignored, and
+  /// expecting that there is a single remaining error. The error filter should
+  /// return `true` if the error should not be ignored.
+  Future<AnalysisError> _findErrorToFix(
+      bool Function(AnalysisError) errorFilter,
+      {int length}) async {
+    List<AnalysisError> errors = await _computeErrors();
+    if (errorFilter != null) {
+      if (errors.length == 1) {
+        fail('Unnecessary error filter');
+      }
+      errors = errors.where(errorFilter).toList();
+    }
+    if (errors.length == 0) {
+      fail('Expected one error, found: none');
+    } else if (errors.length > 1) {
+      StringBuffer buffer = new StringBuffer();
+      buffer.writeln('Expected one error, found:');
+      for (AnalysisError error in errors) {
+        buffer.writeln('  $error [${error.errorCode}]');
+      }
+      fail(buffer.toString());
+    }
+    return errors[0];
+  }
+
+  Future<AnalysisError> _findErrorToFixOfType(ErrorCode errorCode) async {
+    List<AnalysisError> errors = await _computeErrors();
+    for (AnalysisError error in errors) {
+      if (error.errorCode == errorCode) {
+        return error;
+      }
+    }
+    return null;
+  }
+
+  List<Position> _findResultPositions(List<String> searchStrings) {
+    List<Position> positions = <Position>[];
+    for (String search in searchStrings) {
+      int offset = resultCode.indexOf(search);
+      positions.add(new Position(testFile, offset));
+    }
+    return positions;
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/fix_test.dart b/pkg/analysis_server/test/src/services/correction/fix/fix_test.dart
new file mode 100644
index 0000000..655614c
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/fix_test.dart
@@ -0,0 +1,29 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FixTest);
+  });
+}
+
+@reflectiveTest
+class FixTest extends FixProcessorTest {
+  @override
+  FixKind get kind => fail('kind should not be requested');
+
+  test_malformedTypeTest() async {
+    await resolveTestUnit('''
+main(p) {
+  p i s Null;
+}''');
+    await assertNoExceptions();
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/import_async_test.dart b/pkg/analysis_server/test/src/services/correction/fix/import_async_test.dart
new file mode 100644
index 0000000..7bd9141
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/import_async_test.dart
@@ -0,0 +1,51 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ImportAsyncTest);
+  });
+}
+
+@reflectiveTest
+class ImportAsyncTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.IMPORT_ASYNC;
+
+  test_future() async {
+    updateTestPubspecFile('''
+environment:
+  sdk: ^2.0.0
+''');
+    await resolveTestUnit('''
+Future<int> zero() async => 0;
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+Future<int> zero() async => 0;
+''');
+  }
+
+  test_stream() async {
+    updateTestPubspecFile('''
+environment:
+  sdk: ^2.0.0
+''');
+    await resolveTestUnit('''
+Stream<int> zero() => null;
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+Stream<int> zero() => null;
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/import_library_prefix_test.dart b/pkg/analysis_server/test/src/services/correction/fix/import_library_prefix_test.dart
new file mode 100644
index 0000000..af0bbbe
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/import_library_prefix_test.dart
@@ -0,0 +1,57 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ImportLibraryPrefixTest);
+  });
+}
+
+@reflectiveTest
+class ImportLibraryPrefixTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.IMPORT_LIBRARY_PREFIX;
+
+  test_withClass() async {
+    await resolveTestUnit('''
+import 'dart:collection' as pref;
+main() {
+  pref.HashMap s = null;
+  LinkedHashMap f = null;
+  print('\$s \$f');
+}
+''');
+    await assertHasFix('''
+import 'dart:collection' as pref;
+main() {
+  pref.HashMap s = null;
+  pref.LinkedHashMap f = null;
+  print('\$s \$f');
+}
+''');
+  }
+
+  test_withTopLevelVariable() async {
+    await resolveTestUnit('''
+import 'dart:math' as pref;
+main() {
+  print(pref.E);
+  print(PI);
+}
+''');
+    await assertHasFix('''
+import 'dart:math' as pref;
+main() {
+  print(pref.E);
+  print(pref.PI);
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/import_library_project_test.dart b/pkg/analysis_server/test/src/services/correction/fix/import_library_project_test.dart
new file mode 100644
index 0000000..68d5820
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/import_library_project_test.dart
@@ -0,0 +1,485 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ImportLibraryProject1Test);
+    defineReflectiveTests(ImportLibraryProject2Test);
+    defineReflectiveTests(ImportLibraryProject3Test);
+  });
+}
+
+@reflectiveTest
+class ImportLibraryProject1Test extends FixProcessorTest
+    with ImportLibraryTestMixin {
+  @override
+  FixKind get kind => DartFixKind.IMPORT_LIBRARY_PROJECT1;
+
+  test_alreadyImported_package() async {
+    addSource('/home/test/lib/lib.dart', '''
+class A {}
+class B {}
+''');
+    await resolveTestUnit('''
+import 'lib.dart' show A;
+main() {
+  A a;
+  B b;
+  print('\$a \$b');
+}
+''');
+    await assertNoFix();
+  }
+
+  test_notInLib() async {
+    addSource('/home/other/test/lib.dart', 'class Test {}');
+    await resolveTestUnit('''
+main() {
+  Test t;
+  print(t);
+}
+''');
+    await assertNoFix();
+  }
+
+  test_preferDirectOverExport() async {
+    _configureMyPkg({'b.dart': 'class Test {}', 'a.dart': "export 'b.dart';"});
+    await resolveTestUnit('''
+main() {
+  Test test = null;
+  print(test);
+}
+''');
+    await assertHasFix('''
+import 'package:my_pkg/b.dart';
+
+main() {
+  Test test = null;
+  print(test);
+}
+''');
+  }
+
+  test_preferDirectOverExport_src() async {
+    _configureMyPkg({'b.dart': 'class Test {}', 'a.dart': "export 'b.dart';"});
+    await resolveTestUnit('''
+main() {
+  Test test = null;
+  print(test);
+}
+''');
+    await assertHasFix('''
+import 'package:my_pkg/b.dart';
+
+main() {
+  Test test = null;
+  print(test);
+}
+''');
+  }
+
+  test_withClass_annotation() async {
+    addSource('/home/test/lib/lib.dart', '''
+library lib;
+class Test {
+  const Test(int p);
+}
+''');
+    await resolveTestUnit('''
+@Test(0)
+main() {
+}
+''');
+    await assertHasFix('''
+import 'package:test/lib.dart';
+
+@Test(0)
+main() {
+}
+''');
+  }
+
+  test_withClass_hasOtherLibraryWithPrefix() async {
+    addSource('/home/test/lib/a.dart', '''
+library a;
+class One {}
+''');
+    addSource('/home/test/lib/b.dart', '''
+library b;
+class One {}
+class Two {}
+''');
+    await resolveTestUnit('''
+import 'package:test/b.dart' show Two;
+main () {
+  new Two();
+  new One();
+}
+''');
+    await assertHasFix('''
+import 'package:test/a.dart';
+import 'package:test/b.dart' show Two;
+main () {
+  new Two();
+  new One();
+}
+''');
+  }
+
+  test_withClass_inParentFolder() async {
+    testFile = convertPath('/home/test/bin/aaa/test.dart');
+    addSource('/home/test/bin/lib.dart', '''
+library lib;
+class Test {}
+''');
+    await resolveTestUnit('''
+main() {
+  Test t = null;
+  print(t);
+}
+''');
+    await assertHasFix('''
+import '../lib.dart';
+
+main() {
+  Test t = null;
+  print(t);
+}
+''');
+  }
+
+  test_withClass_inRelativeFolder() async {
+    testFile = convertPath('/home/test/bin/test.dart');
+    addSource('/home/test/tool/sub/folder/lib.dart', '''
+library lib;
+class Test {}
+''');
+    await resolveTestUnit('''
+main() {
+  Test t = null;
+  print(t);
+}
+''');
+    await assertHasFix('''
+import '../tool/sub/folder/lib.dart';
+
+main() {
+  Test t = null;
+  print(t);
+}
+''');
+  }
+
+  test_withClass_inSameFolder() async {
+    testFile = convertPath('/home/test/bin/test.dart');
+    addSource('/home/test/bin/lib.dart', '''
+library lib;
+class Test {}
+''');
+    await resolveTestUnit('''
+main() {
+  Test t = null;
+  print(t);
+}
+''');
+    await assertHasFix('''
+import 'lib.dart';
+
+main() {
+  Test t = null;
+  print(t);
+}
+''');
+  }
+
+  test_withClass_instanceCreation_const() async {
+    addSource('/home/test/lib/lib.dart', '''
+class Test {
+  const Test();
+}
+''');
+    await resolveTestUnit('''
+main() {
+  return const Test();
+}
+''');
+    await assertHasFix('''
+import 'package:test/lib.dart';
+
+main() {
+  return const Test();
+}
+''');
+  }
+
+  test_withClass_instanceCreation_const_namedConstructor() async {
+    addSource('/home/test/lib/lib.dart', '''
+class Test {
+  const Test.named();
+}
+''');
+    await resolveTestUnit('''
+main() {
+  const Test.named();
+}
+''');
+    await assertHasFix('''
+import 'package:test/lib.dart';
+
+main() {
+  const Test.named();
+}
+''');
+  }
+
+  test_withClass_instanceCreation_implicit() async {
+    addSource('/home/test/lib/lib.dart', '''
+class Test {
+  const Test();
+}
+''');
+    await resolveTestUnit('''
+main() {
+  return Test();
+}
+''');
+    await assertHasFix('''
+import 'package:test/lib.dart';
+
+main() {
+  return Test();
+}
+''');
+  }
+
+  test_withClass_instanceCreation_new() async {
+    addSource('/home/test/lib/lib.dart', '''
+class Test {
+  const Test();
+}
+''');
+    await resolveTestUnit('''
+main() {
+  return new Test();
+}
+''');
+    await assertHasFix('''
+import 'package:test/lib.dart';
+
+main() {
+  return new Test();
+}
+''');
+  }
+
+  test_withClass_instanceCreation_new_namedConstructor() async {
+    addSource('/home/test/lib/lib.dart', '''
+class Test {
+  Test.named();
+}
+''');
+    await resolveTestUnit('''
+main() {
+  new Test.named();
+}
+''');
+    await assertHasFix('''
+import 'package:test/lib.dart';
+
+main() {
+  new Test.named();
+}
+''');
+  }
+
+  test_withFunction() async {
+    addSource('/home/test/lib/lib.dart', '''
+library lib;
+myFunction() {}
+''');
+    await resolveTestUnit('''
+main() {
+  myFunction();
+}
+''');
+    await assertHasFix('''
+import 'package:test/lib.dart';
+
+main() {
+  myFunction();
+}
+''');
+  }
+
+  test_withFunction_unresolvedMethod() async {
+    addSource('/home/test/lib/lib.dart', '''
+library lib;
+myFunction() {}
+''');
+    await resolveTestUnit('''
+class A {
+  main() {
+    myFunction();
+  }
+}
+''');
+    await assertHasFix('''
+import 'package:test/lib.dart';
+
+class A {
+  main() {
+    myFunction();
+  }
+}
+''');
+  }
+
+  test_withFunctionTypeAlias() async {
+    addSource('/home/test/lib/lib.dart', '''
+library lib;
+typedef MyFunction();
+''');
+    await resolveTestUnit('''
+main() {
+  MyFunction t = null;
+  print(t);
+}
+''');
+    await assertHasFix('''
+import 'package:test/lib.dart';
+
+main() {
+  MyFunction t = null;
+  print(t);
+}
+''');
+  }
+
+  test_withTopLevelVariable() async {
+    addSource('/home/test/lib/lib.dart', '''
+library lib;
+int MY_VAR = 42;
+''');
+    await resolveTestUnit('''
+main() {
+  print(MY_VAR);
+}
+''');
+    await assertHasFix('''
+import 'package:test/lib.dart';
+
+main() {
+  print(MY_VAR);
+}
+''');
+  }
+}
+
+@reflectiveTest
+class ImportLibraryProject2Test extends FixProcessorTest
+    with ImportLibraryTestMixin {
+  @override
+  FixKind get kind => DartFixKind.IMPORT_LIBRARY_PROJECT2;
+
+  test_preferDirectOverExport() async {
+    _configureMyPkg({
+      'b.dart': 'class Test {}',
+      'a.dart': "export 'b.dart';",
+    });
+    await resolveTestUnit('''
+main() {
+  Test test = null;
+  print(test);
+}
+''');
+    await assertHasFix('''
+import 'package:my_pkg/a.dart';
+
+main() {
+  Test test = null;
+  print(test);
+}
+''');
+  }
+
+  test_preferDirectOverExport_src() async {
+    _configureMyPkg({
+      'b.dart': 'class Test {}',
+      'a.dart': "export 'b.dart';",
+    });
+    await resolveTestUnit('''
+main() {
+  Test test = null;
+  print(test);
+}
+''');
+    await assertHasFix('''
+import 'package:my_pkg/a.dart';
+
+main() {
+  Test test = null;
+  print(test);
+}
+''');
+  }
+}
+
+@reflectiveTest
+class ImportLibraryProject3Test extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.IMPORT_LIBRARY_PROJECT3;
+
+  test_inLibSrc_differentContextRoot() async {
+    addPackageFile('bbb', 'b1.dart', r'''
+import 'src/b2.dart';
+class A {}
+''');
+    addPackageFile('bbb', 'src/b2.dart', 'class Test {}');
+    await resolveTestUnit('''
+import 'package:bbb/b1.dart';
+main() {
+  Test t;
+  A a;
+  print('\$t \$a');
+}
+''');
+    await assertNoFix();
+  }
+
+  test_inLibSrc_thisContextRoot() async {
+    addSource('/home/test/lib/src/lib.dart', 'class Test {}');
+    await resolveTestUnit('''
+main() {
+  Test t;
+  print(t);
+}
+''');
+    await assertHasFix('''
+import 'package:test/src/lib.dart';
+
+main() {
+  Test t;
+  print(t);
+}
+''');
+  }
+}
+
+mixin ImportLibraryTestMixin on FixProcessorTest {
+  /// Configures the source factory to have a package named 'my_pkg' and for
+  /// the package to contain all of the files described by the [pathToCode] map.
+  /// The keys in the map are paths relative to the root of the package, and the
+  /// values are the contents of the files at those paths.
+  void _configureMyPkg(Map<String, String> pathToCode) {
+    pathToCode.forEach((path, code) {
+      addPackageFile('my_pkg', path, code);
+    });
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/import_library_sdk_test.dart b/pkg/analysis_server/test/src/services/correction/fix/import_library_sdk_test.dart
new file mode 100644
index 0000000..ce3dcc4
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/import_library_sdk_test.dart
@@ -0,0 +1,272 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ImportLibrarySdkTest);
+  });
+}
+
+@reflectiveTest
+class ImportLibrarySdkTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.IMPORT_LIBRARY_SDK;
+
+  test_alreadyImported_sdk() async {
+    await resolveTestUnit('''
+import 'dart:collection' show HashMap;
+main() {
+  HashMap s = null;
+  LinkedHashMap f = null;
+  print('\$s \$f');
+}
+''');
+    await assertNoFix();
+  }
+
+  test_withClass_asExpression() async {
+    await resolveTestUnit('''
+main(p) {
+  p as HashMap;
+}
+''');
+    await assertHasFix('''
+import 'dart:collection';
+
+main(p) {
+  p as HashMap;
+}
+''');
+  }
+
+  test_withClass_instanceCreation_explicitNew() async {
+    await resolveTestUnit('''
+class C {
+  foo() {
+    new HashMap();
+  }
+}
+''');
+    await assertHasFix('''
+import 'dart:collection';
+
+class C {
+  foo() {
+    new HashMap();
+  }
+}
+''');
+  }
+
+  test_withClass_instanceCreation_explicitNew_namedConstructor() async {
+    await resolveTestUnit('''
+class C {
+  foo() {
+    new Completer.sync(0);
+  }
+}
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+class C {
+  foo() {
+    new Completer.sync(0);
+  }
+}
+''');
+  }
+
+  test_withClass_instanceCreation_implicitNew() async {
+    await resolveTestUnit('''
+class C {
+  foo() {
+    HashMap();
+  }
+}
+''');
+    await assertHasFix('''
+import 'dart:collection';
+
+class C {
+  foo() {
+    HashMap();
+  }
+}
+''');
+  }
+
+  test_withClass_instanceCreation_implicitNew_namedConstructor() async {
+    await resolveTestUnit('''
+class C {
+  foo() {
+    Completer.sync(0);
+  }
+}
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+class C {
+  foo() {
+    Completer.sync(0);
+  }
+}
+''');
+  }
+
+  test_withClass_invocationTarget() async {
+    await resolveTestUnit('''
+main() {
+  Timer.run(null);
+}
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+main() {
+  Timer.run(null);
+}
+''');
+  }
+
+  test_withClass_IsExpression() async {
+    await resolveTestUnit('''
+main(p) {
+  p is Completer;
+}
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+main(p) {
+  p is Completer;
+}
+''');
+  }
+
+  test_withClass_itemOfList() async {
+    await resolveTestUnit('''
+main() {
+  var a = [Completer];
+  print(a);
+}
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+main() {
+  var a = [Completer];
+  print(a);
+}
+''');
+  }
+
+  test_withClass_itemOfList_inAnnotation() async {
+    await resolveTestUnit('''
+class MyAnnotation {
+  const MyAnnotation(a, b);
+}
+@MyAnnotation(int, const [Completer])
+main() {}
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+class MyAnnotation {
+  const MyAnnotation(a, b);
+}
+@MyAnnotation(int, const [Completer])
+main() {}
+''', errorFilter: (error) {
+      return error.errorCode == StaticWarningCode.UNDEFINED_IDENTIFIER;
+    });
+  }
+
+  test_withClass_typeAnnotation() async {
+    await resolveTestUnit('''
+main() {
+  Completer f = null;
+  print(f);
+}
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+main() {
+  Completer f = null;
+  print(f);
+}
+''');
+  }
+
+  test_withClass_typeAnnotation_PrefixedIdentifier() async {
+    await resolveTestUnit('''
+main() {
+  Timer.run;
+}
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+main() {
+  Timer.run;
+}
+''');
+  }
+
+  test_withClass_typeArgument() async {
+    await resolveTestUnit('''
+main() {
+  List<Completer> completers = [];
+  print(completers);
+}
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+main() {
+  List<Completer> completers = [];
+  print(completers);
+}
+''');
+  }
+
+  test_withTopLevelVariable() async {
+    await resolveTestUnit('''
+main() {
+  print(PI);
+}
+''');
+    await assertHasFix('''
+import 'dart:math';
+
+main() {
+  print(PI);
+}
+''');
+  }
+
+  test_withTopLevelVariable_annotation() async {
+    await resolveTestUnit('''
+@PI
+main() {
+}
+''');
+    await assertHasFix('''
+import 'dart:math';
+
+@PI
+main() {
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/import_library_show_test.dart b/pkg/analysis_server/test/src/services/correction/fix/import_library_show_test.dart
new file mode 100644
index 0000000..4f3885f
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/import_library_show_test.dart
@@ -0,0 +1,63 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ImportLibraryShowTest);
+  });
+}
+
+@reflectiveTest
+class ImportLibraryShowTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.IMPORT_LIBRARY_SHOW;
+
+  test_package() async {
+    addSource('/home/test/lib/lib.dart', '''
+class A {}
+class B {}
+''');
+    await resolveTestUnit('''
+import 'lib.dart' show A;
+main() {
+  A a;
+  B b;
+  print('\$a \$b');
+}
+''');
+    await assertHasFix('''
+import 'lib.dart' show A, B;
+main() {
+  A a;
+  B b;
+  print('\$a \$b');
+}
+''');
+  }
+
+  test_sdk() async {
+    await resolveTestUnit('''
+import 'dart:collection' show HashMap;
+main() {
+  HashMap s = null;
+  LinkedHashMap f = null;
+  print('\$s \$f');
+}
+''');
+    await assertHasFix('''
+import 'dart:collection' show HashMap, LinkedHashMap;
+main() {
+  HashMap s = null;
+  LinkedHashMap f = null;
+  print('\$s \$f');
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/insert_semicolon_test.dart b/pkg/analysis_server/test/src/services/correction/fix/insert_semicolon_test.dart
new file mode 100644
index 0000000..77123f3
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/insert_semicolon_test.dart
@@ -0,0 +1,34 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(InsertSemicolonTest);
+  });
+}
+
+@reflectiveTest
+class InsertSemicolonTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.INSERT_SEMICOLON;
+
+  test_expectedToken_semicolon() async {
+    await resolveTestUnit('''
+main() {
+  print(0)
+}
+''');
+    await assertHasFix('''
+main() {
+  print(0);
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/make_class_abstract_test.dart b/pkg/analysis_server/test/src/services/correction/fix/make_class_abstract_test.dart
new file mode 100644
index 0000000..7dbf4e9
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/make_class_abstract_test.dart
@@ -0,0 +1,51 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(MakeClassAbstractTest);
+  });
+}
+
+@reflectiveTest
+class MakeClassAbstractTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.MAKE_CLASS_ABSTRACT;
+
+  test_declaresAbstractMethod() async {
+    await resolveTestUnit('''
+class A {
+  m();
+}
+''');
+    await assertHasFix('''
+abstract class A {
+  m();
+}
+''');
+  }
+
+  test_inheritsAbstractMethod() async {
+    await resolveTestUnit('''
+abstract class A {
+  m();
+}
+class B extends A {
+}
+''');
+    await assertHasFix('''
+abstract class A {
+  m();
+}
+abstract class B extends A {
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/make_field_not_final_test.dart b/pkg/analysis_server/test/src/services/correction/fix/make_field_not_final_test.dart
new file mode 100644
index 0000000..6027ac6
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/make_field_not_final_test.dart
@@ -0,0 +1,59 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(MakeFieldNotFinalTest);
+  });
+}
+
+@reflectiveTest
+class MakeFieldNotFinalTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.MAKE_FIELD_NOT_FINAL;
+
+  test_hasType() async {
+    await resolveTestUnit('''
+class A {
+  final int fff = 1;
+  main() {
+    fff = 2;
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  int fff = 1;
+  main() {
+    fff = 2;
+  }
+}
+''');
+  }
+
+  test_noType() async {
+    await resolveTestUnit('''
+class A {
+  final fff = 1;
+  main() {
+    fff = 2;
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  var fff = 1;
+  main() {
+    fff = 2;
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/make_final_test.dart b/pkg/analysis_server/test/src/services/correction/fix/make_final_test.dart
new file mode 100644
index 0000000..31bc18d
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/make_final_test.dart
@@ -0,0 +1,108 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(MakeFinalTest);
+  });
+}
+
+@reflectiveTest
+class MakeFinalTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.MAKE_FINAL;
+
+  @override
+  String get lintCode => LintNames.prefer_final_fields;
+
+  test_field_type() async {
+    await resolveTestUnit('''
+class C {
+  int /*LINT*/f = 2;
+}
+''');
+    await assertHasFix('''
+class C {
+  final int /*LINT*/f = 2;
+}
+''');
+  }
+
+  test_field_var() async {
+    await resolveTestUnit('''
+class C {
+  var /*LINT*/f = 2;
+}
+''');
+    await assertHasFix('''
+class C {
+  final /*LINT*/f = 2;
+}
+''');
+  }
+
+  test_local_type() async {
+    await resolveTestUnit('''
+bad() {
+  int /*LINT*/x = 2;
+}
+''');
+    await assertHasFix('''
+bad() {
+  final int /*LINT*/x = 2;
+}
+''');
+  }
+
+  test_local_var() async {
+    await resolveTestUnit('''
+bad() {
+  var /*LINT*/x = 2;
+}
+''');
+    await assertHasFix('''
+bad() {
+  final /*LINT*/x = 2;
+}
+''');
+  }
+
+  test_noKeyword() async {
+    await resolveTestUnit('''
+class C {
+  /*LINT*/f = 2;
+}
+''');
+    await assertHasFix('''
+class C {
+  /*LINT*/final f = 2;
+}
+''');
+  }
+
+  test_topLevel_type() async {
+    await resolveTestUnit('''
+int /*LINT*/x = 2;
+''');
+    await assertHasFix('''
+final int /*LINT*/x = 2;
+''');
+  }
+
+  test_topLevel_var() async {
+    await resolveTestUnit('''
+var /*LINT*/x = 2;
+''');
+    await assertHasFix('''
+final /*LINT*/x = 2;
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/move_type_arguments_to_class_test.dart b/pkg/analysis_server/test/src/services/correction/fix/move_type_arguments_to_class_test.dart
new file mode 100644
index 0000000..b7622e9
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/move_type_arguments_to_class_test.dart
@@ -0,0 +1,123 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(MoveTypeArgumentsToClassTest);
+  });
+}
+
+@reflectiveTest
+class MoveTypeArgumentsToClassTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.MOVE_TYPE_ARGUMENTS_TO_CLASS;
+
+  test_explicitConst() async {
+    await resolveTestUnit('''
+main() {
+  const C.named<int>();
+}
+class C<E> {
+  const C.named();
+}
+''');
+    await assertHasFix('''
+main() {
+  const C<int>.named();
+}
+class C<E> {
+  const C.named();
+}
+''');
+  }
+
+  test_explicitNew() async {
+    await resolveTestUnit('''
+main() {
+  new C.named<int>();
+}
+class C<E> {
+  C.named();
+}
+''');
+    await assertHasFix('''
+main() {
+  new C<int>.named();
+}
+class C<E> {
+  C.named();
+}
+''');
+  }
+
+  test_explicitNew_alreadyThere() async {
+    await resolveTestUnit('''
+main() {
+  new C<String>.named<int>();
+}
+class C<E> {
+  C.named();
+}
+''');
+    await assertNoFix();
+  }
+
+  test_explicitNew_wrongNumber() async {
+    await resolveTestUnit('''
+main() {
+  new C.named<int, String>();
+}
+class C<E> {
+  C.named();
+}
+''');
+    await assertNoFix();
+  }
+
+  test_implicitConst() async {
+    await resolveTestUnit('''
+main() {
+  const C c = C.named<int>();
+  print(c);
+}
+class C<E> {
+  const C.named();
+}
+''');
+    await assertHasFix('''
+main() {
+  const C c = C<int>.named();
+  print(c);
+}
+class C<E> {
+  const C.named();
+}
+''');
+  }
+
+  test_implicitNew() async {
+    await resolveTestUnit('''
+main() {
+  C.named<int>();
+}
+class C<E> {
+  C.named();
+}
+''');
+    await assertHasFix('''
+main() {
+  C<int>.named();
+}
+class C<E> {
+  C.named();
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_await_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_await_test.dart
new file mode 100644
index 0000000..6121171
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_await_test.dart
@@ -0,0 +1,51 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveAwaitTest);
+  });
+}
+
+@reflectiveTest
+class RemoveAwaitTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_AWAIT;
+
+  @override
+  String get lintCode => LintNames.await_only_futures;
+
+  test_intLiteral() async {
+    await resolveTestUnit('''
+bad() async {
+  print(/*LINT*/await 23);
+}
+''');
+    await assertHasFix('''
+bad() async {
+  print(/*LINT*/23);
+}
+''');
+  }
+
+  test_stringLiteral() async {
+    await resolveTestUnit('''
+bad() async {
+  print(/*LINT*/await 'hola');
+}
+''');
+    await assertHasFix('''
+bad() async {
+  print(/*LINT*/'hola');
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_dead_code_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_dead_code_test.dart
new file mode 100644
index 0000000..eec8f7c
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_dead_code_test.dart
@@ -0,0 +1,71 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveDeadCodeTest);
+  });
+}
+
+@reflectiveTest
+class RemoveDeadCodeTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_DEAD_CODE;
+
+  test_condition() async {
+    await resolveTestUnit('''
+main(int p) {
+  if (true || p > 5) {
+    print(1);
+  }
+}
+''');
+    await assertHasFix('''
+main(int p) {
+  if (true) {
+    print(1);
+  }
+}
+''');
+  }
+
+  test_statements_one() async {
+    await resolveTestUnit('''
+int main() {
+  print(0);
+  return 42;
+  print(1);
+}
+''');
+    await assertHasFix('''
+int main() {
+  print(0);
+  return 42;
+}
+''');
+  }
+
+  test_statements_two() async {
+    await resolveTestUnit('''
+int main() {
+  print(0);
+  return 42;
+  print(1);
+  print(2);
+}
+''');
+    await assertHasFix('''
+int main() {
+  print(0);
+  return 42;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_empty_catch_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_empty_catch_test.dart
new file mode 100644
index 0000000..b5784b8
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_empty_catch_test.dart
@@ -0,0 +1,54 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveEmptyCatchTest);
+  });
+}
+
+@reflectiveTest
+class RemoveEmptyCatchTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_EMPTY_CATCH;
+
+  @override
+  String get lintCode => LintNames.empty_catches;
+
+  test_newLine() async {
+    await resolveTestUnit('''
+void foo() {
+  try {}
+  catch (e) {/*LINT*/}
+  finally {}
+}
+''');
+    await assertHasFix('''
+void foo() {
+  try {}
+  finally {}
+}
+''');
+  }
+
+  test_sameLine() async {
+    await resolveTestUnit('''
+void foo() {
+  try {} catch (e) {/*LINT*/} finally {}
+}
+''');
+    await assertHasFix('''
+void foo() {
+  try {} finally {}
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_empty_constructor_body_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_empty_constructor_body_test.dart
new file mode 100644
index 0000000..3030ea2
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_empty_constructor_body_test.dart
@@ -0,0 +1,38 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveEmptyConstructorBodyTest);
+  });
+}
+
+@reflectiveTest
+class RemoveEmptyConstructorBodyTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_EMPTY_CONSTRUCTOR_BODY;
+
+  @override
+  String get lintCode => LintNames.empty_constructor_bodies;
+
+  test_empty() async {
+    await resolveTestUnit('''
+class C {
+  C() {/*LINT*/}
+}
+''');
+    await assertHasFix('''
+class C {
+  C();
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_empty_else_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_empty_else_test.dart
new file mode 100644
index 0000000..1019af5
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_empty_else_test.dart
@@ -0,0 +1,60 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveEmptyElseTest);
+  });
+}
+
+@reflectiveTest
+class RemoveEmptyElseTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_EMPTY_ELSE;
+
+  @override
+  String get lintCode => LintNames.avoid_empty_else;
+
+  test_newLine() async {
+    await resolveTestUnit('''
+void foo(bool cond) {
+  if (cond) {
+    //
+  }
+  else /*LINT*/;
+}
+''');
+    await assertHasFix('''
+void foo(bool cond) {
+  if (cond) {
+    //
+  }
+}
+''');
+  }
+
+  test_sameLine() async {
+    await resolveTestUnit('''
+void foo(bool cond) {
+  if (cond) {
+    //
+  } else /*LINT*/;
+}
+''');
+    await assertHasFix('''
+void foo(bool cond) {
+  if (cond) {
+    //
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_empty_statement_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_empty_statement_test.dart
new file mode 100644
index 0000000..18a278c
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_empty_statement_test.dart
@@ -0,0 +1,42 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveEmptyStatementTest);
+  });
+}
+
+@reflectiveTest
+class RemoveEmptyStatementTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_EMPTY_STATEMENT;
+
+  @override
+  String get lintCode => LintNames.empty_statements;
+
+  test_insideBlock() async {
+    await resolveTestUnit('''
+void foo() {
+  while(true) {
+    /*LINT*/;
+  }
+}
+''');
+    await assertHasFix('''
+void foo() {
+  while(true) {
+    /*LINT*/
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_initializer_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_initializer_test.dart
new file mode 100644
index 0000000..b686d62
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_initializer_test.dart
@@ -0,0 +1,56 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveInitializerTest);
+  });
+}
+
+@reflectiveTest
+class RemoveInitializerTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_INITIALIZER;
+
+  @override
+  String get lintCode => LintNames.avoid_init_to_null;
+
+  test_field() async {
+    await resolveTestUnit('''
+class Test {
+  int /*LINT*/x = null;
+}
+''');
+    await assertHasFix('''
+class Test {
+  int /*LINT*/x;
+}
+''');
+  }
+
+  test_listOfVariableDeclarations() async {
+    await resolveTestUnit('''
+String a = 'a', /*LINT*/b = null, c = 'c';
+''');
+    await assertHasFix('''
+String a = 'a', /*LINT*/b, c = 'c';
+''');
+  }
+
+  test_topLevel() async {
+    await resolveTestUnit('''
+var /*LINT*/x = null;
+''');
+    await assertHasFix('''
+var /*LINT*/x;
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_interpolation_braces_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_interpolation_braces_test.dart
new file mode 100644
index 0000000..2fdfad9a
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_interpolation_braces_test.dart
@@ -0,0 +1,40 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveInterpolationBracesTest);
+  });
+}
+
+@reflectiveTest
+class RemoveInterpolationBracesTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_INTERPOLATION_BRACES;
+
+  @override
+  String get lintCode => LintNames.unnecessary_brace_in_string_interp;
+
+  test_withSpace() async {
+    await resolveTestUnit(r'''
+main() {
+  var v = 42;
+  print('v: /*LINT*/${ v}');
+}
+''');
+    await assertHasFix(r'''
+main() {
+  var v = 42;
+  print('v: /*LINT*/$v');
+}
+''', length: 4);
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_method_declaration_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_method_declaration_test.dart
new file mode 100644
index 0000000..443d382
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_method_declaration_test.dart
@@ -0,0 +1,78 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveMethodDeclarationTest);
+  });
+}
+
+@reflectiveTest
+class RemoveMethodDeclarationTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_METHOD_DECLARATION;
+
+  @override
+  String get lintCode => LintNames.unnecessary_override;
+
+  test_getter() async {
+    await resolveTestUnit('''
+class A {
+  int x;
+}
+class B extends A {
+  @override
+  int get /*LINT*/x => super.x;
+}
+''');
+    await assertHasFix('''
+class A {
+  int x;
+}
+class B extends A {
+}
+''');
+  }
+
+  test_method() async {
+    await resolveTestUnit('''
+class A {
+  @override
+  String /*LINT*/toString() => super.toString();
+}
+''');
+    await assertHasFix('''
+class A {
+}
+''');
+  }
+
+  test_setter() async {
+    await resolveTestUnit('''
+class A {
+  int x;
+}
+class B extends A {
+  @override
+  set /*LINT*/x(int other) {
+    this.x = other;
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  int x;
+}
+class B extends A {
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_parameters_in_getter_declaration_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_parameters_in_getter_declaration_test.dart
new file mode 100644
index 0000000..20606f5
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_parameters_in_getter_declaration_test.dart
@@ -0,0 +1,47 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveParametersInGetterDeclarationTest);
+  });
+}
+
+@reflectiveTest
+class RemoveParametersInGetterDeclarationTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_PARAMETERS_IN_GETTER_DECLARATION;
+
+  test_emptyList() async {
+    await resolveTestUnit('''
+class A {
+  int get foo() => 0;
+}
+''');
+    await assertHasFix('''
+class A {
+  int get foo => 0;
+}
+''');
+  }
+
+  test_nonEmptyList() async {
+    await resolveTestUnit('''
+class A {
+  int get foo(int a) => 0;
+}
+''');
+    await assertHasFix('''
+class A {
+  int get foo => 0;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_parentheses_in_getter_invocation_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_parentheses_in_getter_invocation_test.dart
new file mode 100644
index 0000000..65e1c39
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_parentheses_in_getter_invocation_test.dart
@@ -0,0 +1,40 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveParenthesesInGetterInvocationTest);
+  });
+}
+
+@reflectiveTest
+class RemoveParenthesesInGetterInvocationTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_PARENTHESIS_IN_GETTER_INVOCATION;
+
+  test_noArguments() async {
+    await resolveTestUnit('''
+class A {
+  int get foo => 0;
+}
+main(A a) {
+  a.foo();
+}
+''');
+    await assertHasFix('''
+class A {
+  int get foo => 0;
+}
+main(A a) {
+  a.foo;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_this_expression_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_this_expression_test.dart
new file mode 100644
index 0000000..5ea13d4
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_this_expression_test.dart
@@ -0,0 +1,106 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveThisExpressionTest);
+  });
+}
+
+@reflectiveTest
+class RemoveThisExpressionTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_THIS_EXPRESSION;
+
+  @override
+  String get lintCode => LintNames.unnecessary_this;
+
+  test_methodInvocation_oneCharacterOperator() async {
+    await resolveTestUnit('''
+class A {
+  void foo() {
+    /*LINT*/this.foo();
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  void foo() {
+    /*LINT*/foo();
+  }
+}
+''');
+  }
+
+  test_methodInvocation_twoCharactersOperator() async {
+    await resolveTestUnit('''
+class A {
+  void foo() {
+    /*LINT*/this?.foo();
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  void foo() {
+    /*LINT*/foo();
+  }
+}
+''');
+  }
+
+  test_notAThisExpression() async {
+    await resolveTestUnit('''
+void foo() {
+  final /*LINT*/this.id;
+}
+''');
+    await assertNoFix();
+  }
+
+  test_propertyAccess_oneCharacterOperator() async {
+    await resolveTestUnit('''
+class A {
+  int x;
+  void foo() {
+    /*LINT*/this.x = 2;
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  int x;
+  void foo() {
+    /*LINT*/x = 2;
+  }
+}
+''');
+  }
+
+  test_propertyAccess_twoCharactersOperator() async {
+    await resolveTestUnit('''
+class A {
+  int x;
+  void foo() {
+    /*LINT*/this?.x = 2;
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  int x;
+  void foo() {
+    /*LINT*/x = 2;
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_type_annotation_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_type_annotation_test.dart
new file mode 100644
index 0000000..54deb8b
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_type_annotation_test.dart
@@ -0,0 +1,164 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(AvoidAnnotatingWithDynamicTest);
+    defineReflectiveTests(AvoidReturnTypesOnSettersTest);
+    defineReflectiveTests(AvoidTypesOnClosureParametersTest);
+    defineReflectiveTests(TypeInitFormalsTest);
+  });
+}
+
+@reflectiveTest
+class AvoidAnnotatingWithDynamicTest extends RemoveTypeAnnotationTest {
+  @override
+  String get lintCode => LintNames.avoid_annotating_with_dynamic;
+
+  test_insideFunctionTypedFormalParameter() async {
+    await resolveTestUnit('''
+bad(void foo(/*LINT*/dynamic x)) {
+  return null;
+}
+''');
+    await assertHasFix('''
+bad(void foo(/*LINT*/x)) {
+  return null;
+}
+''');
+  }
+
+  test_namedParameter() async {
+    await resolveTestUnit('''
+bad({/*LINT*/dynamic defaultValue}) {
+  return null;
+}
+''');
+    await assertHasFix('''
+bad({/*LINT*/defaultValue}) {
+  return null;
+}
+''');
+  }
+
+  test_normalParameter() async {
+    await resolveTestUnit('''
+bad(/*LINT*/dynamic defaultValue) {
+  return null;
+}
+''');
+    await assertHasFix('''
+bad(/*LINT*/defaultValue) {
+  return null;
+}
+''');
+  }
+
+  test_optionalParameter() async {
+    await resolveTestUnit('''
+bad([/*LINT*/dynamic defaultValue]) {
+  return null;
+}
+''');
+    await assertHasFix('''
+bad([/*LINT*/defaultValue]) {
+  return null;
+}
+''');
+  }
+}
+
+@reflectiveTest
+class AvoidReturnTypesOnSettersTest extends RemoveTypeAnnotationTest {
+  @override
+  String get lintCode => LintNames.avoid_return_types_on_setters;
+
+  test_void() async {
+    await resolveTestUnit('''
+/*LINT*/void set speed2(int ms) {}
+''');
+    await assertHasFix('''
+/*LINT*/set speed2(int ms) {}
+''');
+  }
+}
+
+@reflectiveTest
+class AvoidTypesOnClosureParametersTest extends RemoveTypeAnnotationTest {
+  @override
+  String get lintCode => LintNames.avoid_types_on_closure_parameters;
+
+  test_namedParameter() async {
+    await resolveTestUnit('''
+var x = ({/*LINT*/Future<int> defaultValue}) {
+  return null;
+};
+''');
+    await assertHasFix('''
+var x = ({/*LINT*/defaultValue}) {
+  return null;
+};
+''');
+  }
+
+  test_normalParameter() async {
+    await resolveTestUnit('''
+var x = (/*LINT*/Future<int> defaultValue) {
+  return null;
+};
+''');
+    await assertHasFix('''
+var x = (/*LINT*/defaultValue) {
+  return null;
+};
+''');
+  }
+
+  test_optionalParameter() async {
+    await resolveTestUnit('''
+var x = ([/*LINT*/Future<int> defaultValue]) {
+  return null;
+};
+''');
+    await assertHasFix('''
+var x = ([/*LINT*/defaultValue]) {
+  return null;
+};
+''');
+  }
+}
+
+@reflectiveTest
+class TypeInitFormalsTest extends RemoveTypeAnnotationTest {
+  @override
+  String get lintCode => LintNames.type_init_formals;
+
+  test_void() async {
+    await resolveTestUnit('''
+class C {
+  int f;
+  C(/*LINT*/int this.f);
+}
+''');
+    await assertHasFix('''
+class C {
+  int f;
+  C(/*LINT*/this.f);
+}
+''');
+  }
+}
+
+@reflectiveTest
+abstract class RemoveTypeAnnotationTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_TYPE_ANNOTATION;
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_type_arguments_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_type_arguments_test.dart
new file mode 100644
index 0000000..b27594f
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_type_arguments_test.dart
@@ -0,0 +1,99 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveTypeArgumentsTest);
+  });
+}
+
+@reflectiveTest
+class RemoveTypeArgumentsTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_TYPE_ARGUMENTS;
+
+  test_explicitConst() async {
+    await resolveTestUnit('''
+main() {
+  const C.named<int>();
+}
+class C<E> {
+  const C.named();
+}
+''');
+    await assertHasFix('''
+main() {
+  const C.named();
+}
+class C<E> {
+  const C.named();
+}
+''');
+  }
+
+  test_explicitNew() async {
+    await resolveTestUnit('''
+main() {
+  new C.named<int>();
+}
+class C<E> {
+  C.named();
+}
+''');
+    await assertHasFix('''
+main() {
+  new C.named();
+}
+class C<E> {
+  C.named();
+}
+''');
+  }
+
+  test_implicitConst() async {
+    await resolveTestUnit('''
+main() {
+  const C c = C.named<int>();
+  print(c);
+}
+class C<E> {
+  const C.named();
+}
+''');
+    await assertHasFix('''
+main() {
+  const C c = C.named();
+  print(c);
+}
+class C<E> {
+  const C.named();
+}
+''');
+  }
+
+  test_implicitNew() async {
+    await resolveTestUnit('''
+main() {
+  C.named<int>();
+}
+class C<E> {
+  C.named();
+}
+''');
+    await assertHasFix('''
+main() {
+  C.named();
+}
+class C<E> {
+  C.named();
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_unnecessary_cast_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_unnecessary_cast_test.dart
new file mode 100644
index 0000000..9218c3b
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_unnecessary_cast_test.dart
@@ -0,0 +1,68 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveUnnecessaryCastTest);
+  });
+}
+
+@reflectiveTest
+class RemoveUnnecessaryCastTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_UNNECESSARY_CAST;
+
+  test_assignment() async {
+    await resolveTestUnit('''
+main(Object p) {
+  if (p is String) {
+    String v = ((p as String));
+    print(v);
+  }
+}
+''');
+    await assertHasFix('''
+main(Object p) {
+  if (p is String) {
+    String v = p;
+    print(v);
+  }
+}
+''');
+  }
+
+  test_assignment_all() async {
+    await resolveTestUnit('''
+main(Object p, Object q) {
+  if (p is String) {
+    String v = ((p as String));
+    print(v);
+  }
+  if (q is int) {
+    int v = ((q as int));
+    print(v);
+  }
+}
+''');
+    await assertHasFixAllFix(HintCode.UNNECESSARY_CAST, '''
+main(Object p, Object q) {
+  if (p is String) {
+    String v = p;
+    print(v);
+  }
+  if (q is int) {
+    int v = q;
+    print(v);
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_unused_catch_clause_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_unused_catch_clause_test.dart
new file mode 100644
index 0000000..8bd4f51
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_unused_catch_clause_test.dart
@@ -0,0 +1,40 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveUnusedCatchClauseTest);
+  });
+}
+
+@reflectiveTest
+class RemoveUnusedCatchClauseTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_UNUSED_CATCH_CLAUSE;
+
+  test_removeUnusedCatchClause() async {
+    await resolveTestUnit('''
+main() {
+  try {
+    throw 42;
+  } on int catch (e) {
+  }
+}
+''');
+    await assertHasFix('''
+main() {
+  try {
+    throw 42;
+  } on int {
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_unused_catch_stack_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_unused_catch_stack_test.dart
new file mode 100644
index 0000000..da067cd
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_unused_catch_stack_test.dart
@@ -0,0 +1,40 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveUnusedCatchStackTest);
+  });
+}
+
+@reflectiveTest
+class RemoveUnusedCatchStackTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_UNUSED_CATCH_STACK;
+
+  test_removeUnusedCatchStack() async {
+    await resolveTestUnit('''
+main() {
+  try {
+    throw 42;
+  } catch (e, stack) {
+  }
+}
+''');
+    await assertHasFix('''
+main() {
+  try {
+    throw 42;
+  } catch (e) {
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/remove_unused_import_test.dart b/pkg/analysis_server/test/src/services/correction/fix/remove_unused_import_test.dart
new file mode 100644
index 0000000..96ee02f
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/remove_unused_import_test.dart
@@ -0,0 +1,127 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RemoveUnusedImportTest);
+  });
+}
+
+@reflectiveTest
+class RemoveUnusedImportTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.REMOVE_UNUSED_IMPORT;
+
+  test_all_diverseImports() async {
+    await resolveTestUnit('''
+import 'dart:math';
+import 'dart:math';
+import 'dart:async';
+main() {
+}
+''');
+    await assertHasFixAllFix(HintCode.UNUSED_IMPORT, '''
+main() {
+}
+''');
+  }
+
+  test_all_diverseImports2() async {
+    await resolveTestUnit('''
+import 'dart:async';
+import 'dart:math' as math;
+import 'dart:async';
+
+var tau = math.pi * 2;
+
+main() {
+}
+''');
+    await assertHasFixAllFix(HintCode.UNUSED_IMPORT, '''
+import 'dart:math' as math;
+
+var tau = math.pi * 2;
+
+main() {
+}
+''');
+  }
+
+  test_all_singleLine() async {
+    await resolveTestUnit('''
+import 'dart:math'; import 'dart:math'; import 'dart:math';
+main() {
+}
+''');
+    await assertHasFixAllFix(HintCode.UNUSED_IMPORT, '''
+main() {
+}
+''');
+  }
+
+  test_anotherImportOnLine() async {
+    await resolveTestUnit('''
+import 'dart:math'; import 'dart:async';
+
+main() {
+  Future f;
+  print(f);
+}
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+main() {
+  Future f;
+  print(f);
+}
+''');
+  }
+
+  test_multipleOfSame_all() async {
+    await resolveTestUnit('''
+import 'dart:math';
+import 'dart:math';
+import 'dart:math';
+main() {
+}
+''');
+    await assertHasFixAllFix(HintCode.UNUSED_IMPORT, '''
+main() {
+}
+''');
+  }
+
+  test_severalLines() async {
+    await resolveTestUnit('''
+import
+  'dart:math';
+main() {
+}
+''');
+    await assertHasFix('''
+main() {
+}
+''');
+  }
+
+  test_single() async {
+    await resolveTestUnit('''
+import 'dart:math';
+main() {
+}
+''');
+    await assertHasFix('''
+main() {
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/rename_to_camel_case_test.dart b/pkg/analysis_server/test/src/services/correction/fix/rename_to_camel_case_test.dart
new file mode 100644
index 0000000..45f6677
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/rename_to_camel_case_test.dart
@@ -0,0 +1,113 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(RenameToCamelCaseTest);
+  });
+}
+
+@reflectiveTest
+class RenameToCamelCaseTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.RENAME_TO_CAMEL_CASE;
+
+  @override
+  String get lintCode => LintNames.non_constant_identifier_names;
+
+  test_localVariable() async {
+    await resolveTestUnit('''
+main() {
+  int /*LINT*/my_integer_variable = 42;
+  int foo;
+  print(my_integer_variable);
+  print(foo);
+}
+''');
+    await assertHasFix('''
+main() {
+  int /*LINT*/myIntegerVariable = 42;
+  int foo;
+  print(myIntegerVariable);
+  print(foo);
+}
+''');
+  }
+
+  test_parameter_closure() async {
+    await resolveTestUnit('''
+main() {
+  [0, 1, 2].forEach((/*LINT*/my_integer_variable) {
+    print(my_integer_variable);
+  });
+}
+''');
+    await assertHasFix('''
+main() {
+  [0, 1, 2].forEach((/*LINT*/myIntegerVariable) {
+    print(myIntegerVariable);
+  });
+}
+''');
+  }
+
+  test_parameter_function() async {
+    await resolveTestUnit('''
+main(int /*LINT*/my_integer_variable) {
+  print(my_integer_variable);
+}
+''');
+    await assertHasFix('''
+main(int /*LINT*/myIntegerVariable) {
+  print(myIntegerVariable);
+}
+''');
+  }
+
+  test_parameter_method() async {
+    await resolveTestUnit('''
+class A {
+  main(int /*LINT*/my_integer_variable) {
+    print(my_integer_variable);
+  }
+}
+''');
+    await assertHasFix('''
+class A {
+  main(int /*LINT*/myIntegerVariable) {
+    print(myIntegerVariable);
+  }
+}
+''');
+  }
+
+  test_parameter_optionalNamed() async {
+    await resolveTestUnit('''
+foo({int /*LINT*/my_integer_variable}) {
+  print(my_integer_variable);
+}
+''');
+    await assertNoFix();
+  }
+
+  test_parameter_optionalPositional() async {
+    await resolveTestUnit('''
+main([int /*LINT*/my_integer_variable]) {
+  print(my_integer_variable);
+}
+''');
+    await assertHasFix('''
+main([int /*LINT*/myIntegerVariable]) {
+  print(myIntegerVariable);
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/replace_boolean_with_bool_test.dart b/pkg/analysis_server/test/src/services/correction/fix/replace_boolean_with_bool_test.dart
new file mode 100644
index 0000000..29fe96e
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/replace_boolean_with_bool_test.dart
@@ -0,0 +1,52 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ReplaceBooleanWithBoolTest);
+  });
+}
+
+@reflectiveTest
+class ReplaceBooleanWithBoolTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.REPLACE_BOOLEAN_WITH_BOOL;
+
+  test_all() async {
+    await resolveTestUnit('''
+main() {
+  boolean v;
+  boolean w;
+}
+''');
+    await assertHasFixAllFix(StaticWarningCode.UNDEFINED_CLASS_BOOLEAN, '''
+main() {
+  bool v;
+  bool w;
+}
+''');
+  }
+
+  test_single() async {
+    await resolveTestUnit('''
+main() {
+  boolean v;
+  print(v);
+}
+''');
+    await assertHasFix('''
+main() {
+  bool v;
+  print(v);
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/replace_final_with_const_test.dart b/pkg/analysis_server/test/src/services/correction/fix/replace_final_with_const_test.dart
new file mode 100644
index 0000000..77fa5a7
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/replace_final_with_const_test.dart
@@ -0,0 +1,34 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ReplaceFinalWithConstTest);
+  });
+}
+
+@reflectiveTest
+class ReplaceFinalWithConstTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REPLACE_FINAL_WITH_CONST;
+
+  @override
+  String get lintCode => LintNames.prefer_const_declarations;
+
+  test_method() async {
+    await resolveTestUnit('''
+/*LINT*/final int a = 1;
+''');
+    await assertHasFix('''
+/*LINT*/const int a = 1;
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/replace_return_type_future_test.dart b/pkg/analysis_server/test/src/services/correction/fix/replace_return_type_future_test.dart
new file mode 100644
index 0000000..244178e
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/replace_return_type_future_test.dart
@@ -0,0 +1,151 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ReplaceReturnTypeFutureTest);
+  });
+}
+
+@reflectiveTest
+class ReplaceReturnTypeFutureTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.REPLACE_RETURN_TYPE_FUTURE;
+
+  test_adjacentNodes_withImport() async {
+    await resolveTestUnit('''
+import 'dart:async';
+var v;int main() async => 0;
+''');
+    await assertHasFix('''
+import 'dart:async';
+var v;Future<int> main() async => 0;
+''', errorFilter: (error) {
+      return error.errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE;
+    });
+  }
+
+  test_adjacentNodes_withoutImport() async {
+    await resolveTestUnit('''
+var v;int main() async => 0;
+''');
+    await assertHasFix('''
+var v;Future<int> main() async => 0;
+''', errorFilter: (error) {
+      return error.errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE;
+    });
+  }
+
+  test_complexTypeName_withImport() async {
+    await resolveTestUnit('''
+import 'dart:async';
+List<int> main() async {
+}
+''');
+    await assertHasFix('''
+import 'dart:async';
+Future<List<int>> main() async {
+}
+''', errorFilter: (error) {
+      return error.errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE;
+    });
+  }
+
+  @failingTest
+  test_complexTypeName_withoutImport() async {
+    await resolveTestUnit('''
+List<int> main() async {
+}
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+Future<List<int>> main() async {
+}
+''', errorFilter: (error) {
+      return error.errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE;
+    });
+  }
+
+  test_importedWithPrefix() async {
+    await resolveTestUnit('''
+import 'dart:async' as al;
+int main() async {
+}
+''');
+    await assertHasFix('''
+import 'dart:async' as al;
+al.Future<int> main() async {
+}
+''', errorFilter: (error) {
+      return error.errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE;
+    });
+  }
+
+  test_simpleTypeName_withImport() async {
+    await resolveTestUnit('''
+import 'dart:async';
+int main() async => 0;
+''');
+    await assertHasFix('''
+import 'dart:async';
+Future<int> main() async => 0;
+''', errorFilter: (error) {
+      return error.errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE;
+    });
+  }
+
+  @failingTest
+  test_simpleTypeName_withoutImport() async {
+    await resolveTestUnit('''
+int main() async => 0;
+''');
+    await assertHasFix('''
+import 'dart:async';
+
+Future<int> main() async => 0;
+''', errorFilter: (error) {
+      return error.errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE;
+    });
+  }
+
+  test_withLibraryDirective_withImport() async {
+    await resolveTestUnit('''
+library main;
+import 'dart:async';
+int main() async {
+}
+''');
+    await assertHasFix('''
+library main;
+import 'dart:async';
+Future<int> main() async {
+}
+''', errorFilter: (error) {
+      return error.errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE;
+    });
+  }
+
+  test_withLibraryDirective_withoutImport() async {
+    await resolveTestUnit('''
+library main;
+int main() async {
+}
+''');
+    await assertHasFix('''
+library main;
+Future<int> main() async {
+}
+''', errorFilter: (error) {
+      return error.errorCode == StaticTypeWarningCode.ILLEGAL_ASYNC_RETURN_TYPE;
+    });
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/replace_var_with_dynamic_test.dart b/pkg/analysis_server/test/src/services/correction/fix/replace_var_with_dynamic_test.dart
new file mode 100644
index 0000000..f0463c8
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/replace_var_with_dynamic_test.dart
@@ -0,0 +1,37 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer/src/dart/error/syntactic_errors.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ReplaceVarWithDynamicTest);
+  });
+}
+
+@reflectiveTest
+class ReplaceVarWithDynamicTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.REPLACE_VAR_WITH_DYNAMIC;
+
+  test_simple() async {
+    await resolveTestUnit('''
+class A {
+  Map<String, var> m;
+}
+''');
+    await assertHasFix('''
+class A {
+  Map<String, dynamic> m;
+}
+''', errorFilter: (error) {
+      return error.errorCode == ParserErrorCode.VAR_AS_TYPE_NAME;
+    });
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/replace_with_brackets_test.dart b/pkg/analysis_server/test/src/services/correction/fix/replace_with_brackets_test.dart
new file mode 100644
index 0000000..93cae94
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/replace_with_brackets_test.dart
@@ -0,0 +1,56 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ReplaceWithBracketsTest);
+  });
+}
+
+@reflectiveTest
+class ReplaceWithBracketsTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REPLACE_WITH_BRACKETS;
+
+  @override
+  String get lintCode => LintNames.empty_statements;
+
+  test_outOfBlock_otherLine() async {
+    await resolveTestUnit('''
+void foo() {
+  while(true)
+  /*LINT*/;
+  print('hi');
+}
+''');
+    await assertHasFix('''
+void foo() {
+  while(true) {}
+  print('hi');
+}
+''');
+  }
+
+  test_outOfBlock_sameLine() async {
+    await resolveTestUnit('''
+void foo() {
+  while(true)/*LINT*/;
+  print('hi');
+}
+''');
+    await assertHasFix('''
+void foo() {
+  while(true) {}
+  print('hi');
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/replace_with_conditional_assignment_test.dart b/pkg/analysis_server/test/src/services/correction/fix/replace_with_conditional_assignment_test.dart
new file mode 100644
index 0000000..e5baaec
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/replace_with_conditional_assignment_test.dart
@@ -0,0 +1,112 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ReplaceWithConditionalAssignmentTest);
+  });
+}
+
+@reflectiveTest
+class ReplaceWithConditionalAssignmentTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REPLACE_WITH_CONDITIONAL_ASSIGNMENT;
+
+  @override
+  String get lintCode => LintNames.prefer_conditional_assignment;
+
+  test_withCodeBeforeAndAfter() async {
+    await resolveTestUnit('''
+class Person {
+  String _fullName;
+  void foo() {
+    print('hi');
+    /*LINT*/if (_fullName == null) {
+      _fullName = getFullUserName(this);
+    }
+    print('hi');
+  }
+}
+''');
+    await assertHasFix('''
+class Person {
+  String _fullName;
+  void foo() {
+    print('hi');
+    /*LINT*/_fullName ??= getFullUserName(this);
+    print('hi');
+  }
+}
+''');
+  }
+
+  test_withOneBlock() async {
+    await resolveTestUnit('''
+class Person {
+  String _fullName;
+  void foo() {
+    /*LINT*/if (_fullName == null) {
+      _fullName = getFullUserName(this);
+    }
+  }
+}
+''');
+    await assertHasFix('''
+class Person {
+  String _fullName;
+  void foo() {
+    /*LINT*/_fullName ??= getFullUserName(this);
+  }
+}
+''');
+  }
+
+  test_withoutBlock() async {
+    await resolveTestUnit('''
+class Person {
+  String _fullName;
+  void foo() {
+    /*LINT*/if (_fullName == null)
+      _fullName = getFullUserName(this);
+  }
+}
+''');
+    await assertHasFix('''
+class Person {
+  String _fullName;
+  void foo() {
+    /*LINT*/_fullName ??= getFullUserName(this);
+  }
+}
+''');
+  }
+
+  test_withTwoBlock() async {
+    await resolveTestUnit('''
+class Person {
+  String _fullName;
+  void foo() {
+    /*LINT*/if (_fullName == null) {{
+      _fullName = getFullUserName(this);
+    }}
+  }
+}
+''');
+    await assertHasFix('''
+class Person {
+  String _fullName;
+  void foo() {
+    /*LINT*/_fullName ??= getFullUserName(this);
+  }
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/replace_with_identifier_test.dart b/pkg/analysis_server/test/src/services/correction/fix/replace_with_identifier_test.dart
new file mode 100644
index 0000000..6dfc38c
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/replace_with_identifier_test.dart
@@ -0,0 +1,34 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ReplaceWithIdentifierTest);
+  });
+}
+
+@reflectiveTest
+class ReplaceWithIdentifierTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REPLACE_WITH_IDENTIFIER;
+
+  @override
+  String get lintCode => LintNames.avoid_types_on_closure_parameters;
+
+  test_functionTypedFormalParameter() async {
+    await resolveTestUnit('''
+var functionWithFunction = (/*LINT*/int f(int x)) => f(0);
+''');
+    await assertHasFix('''
+var functionWithFunction = (/*LINT*/f) => f(0);
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/replace_with_literal_test.dart b/pkg/analysis_server/test/src/services/correction/fix/replace_with_literal_test.dart
new file mode 100644
index 0000000..7ec1088
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/replace_with_literal_test.dart
@@ -0,0 +1,113 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ReplaceWithLiteralTest);
+  });
+}
+
+@reflectiveTest
+class ReplaceWithLiteralTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REPLACE_WITH_LITERAL;
+
+  @override
+  String get lintCode => LintNames.prefer_collection_literals;
+
+  test_linkedHashMap_withCommentsInGeneric() async {
+    await resolveTestUnit('''
+import 'dart:collection';
+
+final a = /*LINT*/new LinkedHashMap<int,/*comment*/int>();
+''');
+    await assertHasFix('''
+import 'dart:collection';
+
+final a = /*LINT*/<int,/*comment*/int>{};
+''');
+  }
+
+  test_linkedHashMap_withDynamicGenerics() async {
+    await resolveTestUnit('''
+import 'dart:collection';
+
+final a = /*LINT*/new LinkedHashMap<dynamic,dynamic>();
+''');
+    await assertHasFix('''
+import 'dart:collection';
+
+final a = /*LINT*/<dynamic,dynamic>{};
+''');
+  }
+
+  test_linkedHashMap_withGeneric() async {
+    await resolveTestUnit('''
+import 'dart:collection';
+
+final a = /*LINT*/new LinkedHashMap<int,int>();
+''');
+    await assertHasFix('''
+import 'dart:collection';
+
+final a = /*LINT*/<int,int>{};
+''');
+  }
+
+  test_linkedHashMap_withoutGeneric() async {
+    await resolveTestUnit('''
+import 'dart:collection';
+
+final a = /*LINT*/new LinkedHashMap();
+''');
+    await assertHasFix('''
+import 'dart:collection';
+
+final a = /*LINT*/{};
+''');
+  }
+
+  test_list_withGeneric() async {
+    await resolveTestUnit('''
+final a = /*LINT*/new List<int>();
+''');
+    await assertHasFix('''
+final a = /*LINT*/<int>[];
+''');
+  }
+
+  test_list_withoutGeneric() async {
+    await resolveTestUnit('''
+final a = /*LINT*/new List();
+''');
+    await assertHasFix('''
+final a = /*LINT*/[];
+''');
+  }
+
+  test_map_withGeneric() async {
+    await resolveTestUnit('''
+final a = /*LINT*/new Map<int,int>();
+''');
+    await assertHasFix('''
+final a = /*LINT*/<int,int>{};
+''');
+  }
+
+  test_map_withoutGeneric() async {
+    await resolveTestUnit('''
+final a = /*LINT*/new Map();
+''');
+    await assertHasFix('''
+final a = /*LINT*/{};
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/replace_with_null_aware_test.dart b/pkg/analysis_server/test/src/services/correction/fix/replace_with_null_aware_test.dart
new file mode 100644
index 0000000..f758081
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/replace_with_null_aware_test.dart
@@ -0,0 +1,60 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ReplaceWithNullAwareTest);
+  });
+}
+
+@reflectiveTest
+class ReplaceWithNullAwareTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.REPLACE_WITH_NULL_AWARE;
+
+  test_chain() async {
+    await resolveTestUnit('''
+main(x) {
+  x?.a.b.c;
+}
+''');
+    await assertHasFix('''
+main(x) {
+  x?.a?.b?.c;
+}
+''');
+  }
+
+  test_methodInvocation() async {
+    await resolveTestUnit('''
+main(x) {
+  x?.a.b();
+}
+''');
+    await assertHasFix('''
+main(x) {
+  x?.a?.b();
+}
+''');
+  }
+
+  test_propertyAccess() async {
+    await resolveTestUnit('''
+main(x) {
+  x?.a().b;
+}
+''');
+    await assertHasFix('''
+main(x) {
+  x?.a()?.b;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/replace_with_tear_off_test.dart b/pkg/analysis_server/test/src/services/correction/fix/replace_with_tear_off_test.dart
new file mode 100644
index 0000000..ccc757a
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/replace_with_tear_off_test.dart
@@ -0,0 +1,97 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(ReplaceWithTearOffTest);
+  });
+}
+
+@reflectiveTest
+class ReplaceWithTearOffTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.REPLACE_WITH_TEAR_OFF;
+
+  @override
+  String get lintCode => LintNames.unnecessary_lambdas;
+
+  test_function_oneParameter() async {
+    await resolveTestUnit('''
+final x = /*LINT*/(name) {
+  print(name);
+};
+''');
+    await assertHasFix('''
+final x = /*LINT*/print;
+''');
+  }
+
+  test_function_zeroParameters() async {
+    await resolveTestUnit('''
+void foo(){}
+Function finalVar() {
+  return /*LINT*/() {
+    foo();
+  };
+}
+''');
+    await assertHasFix('''
+void foo(){}
+Function finalVar() {
+  return /*LINT*/foo;
+}
+''');
+  }
+
+  test_lambda_asArgument() async {
+    await resolveTestUnit('''
+void foo() {
+  bool isPair(int a) => a % 2 == 0;
+  final finalList = <int>[];
+  finalList.where(/*LINT*/(number) =>
+    isPair(number));
+}
+''');
+    await assertHasFix('''
+void foo() {
+  bool isPair(int a) => a % 2 == 0;
+  final finalList = <int>[];
+  finalList.where(/*LINT*/isPair);
+}
+''');
+  }
+
+  test_method_oneParameter() async {
+    await resolveTestUnit('''
+var a = /*LINT*/(x) => finalList.remove(x);
+''');
+    await assertHasFix('''
+var a = /*LINT*/finalList.remove;
+''');
+  }
+
+  test_method_zeroParameter() async {
+    await resolveTestUnit('''
+final Object a;
+Function finalVar() {
+  return /*LINT*/() {
+    return a.toString();
+  };
+}
+''');
+    await assertHasFix('''
+final Object a;
+Function finalVar() {
+  return /*LINT*/a.toString;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/test_all.dart b/pkg/analysis_server/test/src/services/correction/fix/test_all.dart
new file mode 100644
index 0000000..de6f043
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/test_all.dart
@@ -0,0 +1,180 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'add_async_test.dart' as add_async;
+import 'add_explicit_cast_test.dart' as add_explicit_cast;
+import 'add_field_formal_parameters_test.dart' as add_field_formal_parameters;
+import 'add_missing_parameter_named_test.dart' as add_missing_parameter_named;
+import 'add_missing_parameter_positional_test.dart'
+    as add_missing_parameter_positional;
+import 'add_missing_parameter_required_test.dart'
+    as add_missing_parameter_required;
+import 'add_missing_required_argument_test.dart'
+    as add_missing_required_argument;
+import 'add_ne_null_test.dart' as add_ne_null;
+import 'add_override_test.dart' as add_override;
+import 'add_required_test.dart' as add_required;
+import 'add_static_test.dart' as add_static;
+import 'add_super_constructor_invocation_test.dart'
+    as add_super_constructor_invocation;
+import 'change_to_nearest_precise_value_test.dart'
+    as change_to_nearest_precise_value;
+import 'change_to_static_access_test.dart' as change_to_static_access;
+import 'change_to_test.dart' as change_to;
+import 'change_type_annotation_test.dart' as change_type_annotation;
+import 'convert_flutter_child_test.dart' as convert_flutter_child;
+import 'convert_flutter_children_test.dart' as convert_flutter_children;
+import 'convert_to_named_arguments_test.dart' as convert_to_named_arguments;
+import 'create_class_test.dart' as create_class;
+import 'create_constructor_for_final_fields_test.dart'
+    as create_constructor_for_final_field;
+import 'create_constructor_super_test.dart' as create_constructor_super;
+import 'create_constructor_test.dart' as create_constructor;
+import 'create_field_test.dart' as create_field;
+import 'create_file_test.dart' as create_file;
+import 'create_function_test.dart' as create_function;
+import 'create_getter_test.dart' as create_getter;
+import 'create_local_variable_test.dart' as create_local_variable;
+import 'create_method_test.dart' as create_method;
+import 'create_missing_overrides_test.dart' as create_missing_overrides;
+import 'create_mixin_test.dart' as create_mixin;
+import 'create_no_such_method_test.dart' as create_no_such_method;
+import 'extend_class_for_mixin_test.dart' as extend_class_for_mixin;
+import 'fix_test.dart' as fix;
+import 'import_async_test.dart' as import_async;
+import 'import_library_prefix_test.dart' as import_library_prefix;
+import 'import_library_project_test.dart' as import_library_project;
+import 'import_library_sdk_test.dart' as import_library_sdk;
+import 'import_library_show_test.dart' as import_library_show;
+import 'insert_semicolon_test.dart' as insert_semicolon;
+import 'make_class_abstract_test.dart' as make_class_abstract;
+import 'make_field_not_final_test.dart' as make_field_not_final;
+import 'make_final_test.dart' as make_final;
+import 'move_type_arguments_to_class_test.dart' as move_type_arguments_to_class;
+import 'remove_await_test.dart' as remove_await;
+import 'remove_dead_code_test.dart' as remove_dead_code;
+import 'remove_empty_catch_test.dart' as remove_empty_catch;
+import 'remove_empty_constructor_body_test.dart'
+    as remove_empty_constructor_body;
+import 'remove_empty_else_test.dart' as remove_empty_else;
+import 'remove_empty_statement_test.dart' as remove_empty_statement;
+import 'remove_initializer_test.dart' as remove_initializer;
+import 'remove_interpolation_braces_test.dart' as remove_interpolation_braces;
+import 'remove_method_declaration_test.dart' as remove_method_declaration;
+import 'remove_parameters_in_getter_declaration_test.dart'
+    as remove_parameters_in_getter_declaration;
+import 'remove_parentheses_in_getter_invocation_test.dart'
+    as remove_parentheses_in_getter_invocation;
+import 'remove_this_expression_test.dart' as remove_this_expression;
+import 'remove_type_annotation_test.dart' as remove_type_annotation;
+import 'remove_type_arguments_test.dart' as remove_type_arguments;
+import 'remove_unnecessary_cast_test.dart' as remove_unnecessary_cast;
+import 'remove_unused_catch_clause_test.dart' as remove_unused_catch_clause;
+import 'remove_unused_catch_stack_test.dart' as remove_unused_catch_stack;
+import 'remove_unused_import_test.dart' as remove_unused_import;
+import 'rename_to_camel_case_test.dart' as rename_to_camel_case;
+import 'replace_boolean_with_bool_test.dart' as replace_boolean_with_bool;
+import 'replace_final_with_const_test.dart' as replace_final_with_const;
+import 'replace_return_type_future_test.dart' as replace_return_type_future;
+import 'replace_var_with_dynamic_test.dart' as replace_var_with_dynamic;
+import 'replace_with_brackets_test.dart' as replace_with_brackets;
+import 'replace_with_conditional_assignment_test.dart'
+    as replace_with_conditional_assignment;
+import 'replace_with_identifier_test.dart' as replace_with_identifier;
+import 'replace_with_literal_test.dart' as replace_with_literal;
+import 'replace_with_null_aware_test.dart' as replace_with_null_aware;
+import 'replace_with_tear_off_test.dart' as replace_with_tear_off;
+import 'update_sdk_constraints_test.dart' as update_sdk_constraints;
+import 'use_const_test.dart' as use_const;
+import 'use_effective_integer_division_test.dart'
+    as use_effective_integer_division;
+import 'use_eq_eq_null_test.dart' as use_eq_eq_null;
+import 'use_is_not_empty_test.dart' as use_is_not_empty;
+import 'use_not_eq_null_test.dart' as use_not_eq_null;
+
+main() {
+  defineReflectiveSuite(() {
+    add_async.main();
+    add_explicit_cast.main();
+    add_field_formal_parameters.main();
+    add_missing_parameter_named.main();
+    add_missing_parameter_positional.main();
+    add_missing_parameter_required.main();
+    add_missing_required_argument.main();
+    add_ne_null.main();
+    add_override.main();
+    add_required.main();
+    add_static.main();
+    add_super_constructor_invocation.main();
+    change_to.main();
+    change_to_nearest_precise_value.main();
+    change_to_static_access.main();
+    change_type_annotation.main();
+    convert_flutter_child.main();
+    convert_flutter_children.main();
+    convert_to_named_arguments.main();
+    create_class.main();
+    create_constructor_for_final_field.main();
+    create_constructor_super.main();
+    create_constructor.main();
+    create_field.main();
+    create_file.main();
+    create_function.main();
+    create_getter.main();
+    create_local_variable.main();
+    create_method.main();
+    create_missing_overrides.main();
+    create_mixin.main();
+    create_no_such_method.main();
+    extend_class_for_mixin.main();
+    fix.main();
+    import_async.main();
+    import_library_prefix.main();
+    import_library_project.main();
+    import_library_sdk.main();
+    import_library_show.main();
+    insert_semicolon.main();
+    make_class_abstract.main();
+    make_field_not_final.main();
+    make_final.main();
+    move_type_arguments_to_class.main();
+    remove_await.main();
+    remove_dead_code.main();
+    remove_empty_catch.main();
+    remove_empty_constructor_body.main();
+    remove_empty_else.main();
+    remove_empty_statement.main();
+    remove_initializer.main();
+    remove_interpolation_braces.main();
+    remove_method_declaration.main();
+    remove_parameters_in_getter_declaration.main();
+    remove_parentheses_in_getter_invocation.main();
+    remove_this_expression.main();
+    remove_type_annotation.main();
+    remove_type_arguments.main();
+    remove_unnecessary_cast.main();
+    remove_unused_catch_clause.main();
+    remove_unused_catch_stack.main();
+    remove_unused_import.main();
+    rename_to_camel_case.main();
+    replace_boolean_with_bool.main();
+    replace_final_with_const.main();
+    replace_return_type_future.main();
+    replace_var_with_dynamic.main();
+    replace_with_brackets.main();
+    replace_with_conditional_assignment.main();
+    replace_with_literal.main();
+    replace_with_identifier.main();
+    replace_with_null_aware.main();
+    replace_with_tear_off.main();
+    update_sdk_constraints.main();
+    use_const.main();
+    use_effective_integer_division.main();
+    use_eq_eq_null.main();
+    use_is_not_empty.main();
+    use_not_eq_null.main();
+  }, name: 'fix');
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/update_sdk_constraints_test.dart b/pkg/analysis_server/test/src/services/correction/fix/update_sdk_constraints_test.dart
new file mode 100644
index 0000000..4b957b3
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/update_sdk_constraints_test.dart
@@ -0,0 +1,55 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(UpdateSdkConstraintsTest);
+  });
+}
+
+@reflectiveTest
+class UpdateSdkConstraintsTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.UPDATE_SDK_CONSTRAINTS;
+
+  test_any() async {
+    await testUpdate(from: 'any', to: '^2.1.0');
+  }
+
+  test_caret() async {
+    await testUpdate(from: '^2.0.0', to: '^2.1.0');
+  }
+
+  test_compound() async {
+    await testUpdate(from: "'>=2.0.0 <3.0.0'", to: "'>=2.1.0 <3.0.0'");
+  }
+
+  test_gt() async {
+    await testUpdate(from: "'>2.0.0'", to: "'>=2.1.0'");
+  }
+
+  test_gte() async {
+    await testUpdate(from: "'>=2.0.0'", to: "'>=2.1.0'");
+  }
+
+  testUpdate({String from, String to}) async {
+    updateTestPubspecFile('''
+environment:
+  sdk: $from
+''');
+    await resolveTestUnit('''
+Future<int> zero() async => 0;
+''');
+    await assertHasFix('''
+environment:
+  sdk: $to
+''', target: testPubspecPath);
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/use_const_test.dart b/pkg/analysis_server/test/src/services/correction/fix/use_const_test.dart
new file mode 100644
index 0000000..9ac1952
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/use_const_test.dart
@@ -0,0 +1,36 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(UseConstTest);
+  });
+}
+
+@reflectiveTest
+class UseConstTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.USE_CONST;
+
+  test_explicitNew() async {
+    await resolveTestUnit('''
+class A {
+  const A();
+}
+const a = new A();
+''');
+    await assertHasFix('''
+class A {
+  const A();
+}
+const a = const A();
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/use_effective_integer_division_test.dart b/pkg/analysis_server/test/src/services/correction/fix/use_effective_integer_division_test.dart
new file mode 100644
index 0000000..770f505
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/use_effective_integer_division_test.dart
@@ -0,0 +1,38 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(UseEffectiveIntegerDivisionTest);
+  });
+}
+
+@reflectiveTest
+class UseEffectiveIntegerDivisionTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.USE_EFFECTIVE_INTEGER_DIVISION;
+
+  test_normalDivision() async {
+    await resolveTestUnit('''
+main() {
+  var a = 5;
+  var b = 2;
+  print((a / b).toInt());
+}
+''');
+    await assertHasFix('''
+main() {
+  var a = 5;
+  var b = 2;
+  print(a ~/ b);
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/use_eq_eq_null_test.dart b/pkg/analysis_server/test/src/services/correction/fix/use_eq_eq_null_test.dart
new file mode 100644
index 0000000..de6b873
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/use_eq_eq_null_test.dart
@@ -0,0 +1,50 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(UseEqEqNullTest);
+  });
+}
+
+@reflectiveTest
+class UseEqEqNullTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.USE_EQ_EQ_NULL;
+
+  test_isNull() async {
+    await resolveTestUnit('''
+main(p) {
+  p is Null;
+}
+''');
+    await assertHasFix('''
+main(p) {
+  p == null;
+}
+''');
+  }
+
+  test_isNull_all() async {
+    await resolveTestUnit('''
+main(p, q) {
+  p is Null;
+  q is Null;
+}
+''');
+    await assertHasFixAllFix(HintCode.TYPE_CHECK_IS_NULL, '''
+main(p, q) {
+  p == null;
+  q == null;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/use_is_not_empty_test.dart b/pkg/analysis_server/test/src/services/correction/fix/use_is_not_empty_test.dart
new file mode 100644
index 0000000..ab2da21
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/use_is_not_empty_test.dart
@@ -0,0 +1,38 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analysis_server/src/services/correction/fix_internal.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(UseIsNotEmptyTest);
+  });
+}
+
+@reflectiveTest
+class UseIsNotEmptyTest extends FixProcessorLintTest {
+  @override
+  FixKind get kind => DartFixKind.USE_IS_NOT_EMPTY;
+
+  @override
+  String get lintCode => LintNames.prefer_is_not_empty;
+
+  test_notIsEmpty() async {
+    await resolveTestUnit('''
+f(c) {
+  if (/*LINT*/!c.isEmpty) {}
+}
+''');
+    await assertHasFix('''
+f(c) {
+  if (/*LINT*/c.isNotEmpty) {}
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/fix/use_not_eq_null_test.dart b/pkg/analysis_server/test/src/services/correction/fix/use_not_eq_null_test.dart
new file mode 100644
index 0000000..3fdd82a
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/fix/use_not_eq_null_test.dart
@@ -0,0 +1,50 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/src/services/correction/fix.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'fix_processor.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(UseNotEqNullTest);
+  });
+}
+
+@reflectiveTest
+class UseNotEqNullTest extends FixProcessorTest {
+  @override
+  FixKind get kind => DartFixKind.USE_NOT_EQ_NULL;
+
+  test_isNotNull() async {
+    await resolveTestUnit('''
+main(p) {
+  p is! Null;
+}
+''');
+    await assertHasFix('''
+main(p) {
+  p != null;
+}
+''');
+  }
+
+  test_isNotNull_all() async {
+    await resolveTestUnit('''
+main(p, q) {
+  p is! Null;
+  q is! Null;
+}
+''');
+    await assertHasFixAllFix(HintCode.TYPE_CHECK_IS_NOT_NULL, '''
+main(p, q) {
+  p != null;
+  q != null;
+}
+''');
+  }
+}
diff --git a/pkg/analysis_server/test/src/services/correction/test_all.dart b/pkg/analysis_server/test/src/services/correction/test_all.dart
new file mode 100644
index 0000000..7c6c49d
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/correction/test_all.dart
@@ -0,0 +1,15 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'assist/test_all.dart' as assist_all;
+import 'fix/test_all.dart' as fix_all;
+
+main() {
+  defineReflectiveSuite(() {
+    assist_all.main();
+    fix_all.main();
+  }, name: 'correction');
+}
diff --git a/pkg/analysis_server/test/src/services/test_all.dart b/pkg/analysis_server/test/src/services/test_all.dart
new file mode 100644
index 0000000..46f575f
--- /dev/null
+++ b/pkg/analysis_server/test/src/services/test_all.dart
@@ -0,0 +1,13 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'correction/test_all.dart' as correction_all;
+
+main() {
+  defineReflectiveSuite(() {
+    correction_all.main();
+  }, name: 'services');
+}
diff --git a/pkg/analysis_server/test/src/test_all.dart b/pkg/analysis_server/test/src/test_all.dart
index c25b65a..6a07ced 100644
--- a/pkg/analysis_server/test/src/test_all.dart
+++ b/pkg/analysis_server/test/src/test_all.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -6,8 +6,10 @@
 
 import 'computer/test_all.dart' as computer_all;
 import 'domain_abstract_test.dart' as domain_abstract_test;
+import 'domains/test_all.dart' as domains_all;
 import 'flutter/test_all.dart' as flutter_all;
 import 'plugin/test_all.dart' as plugin_all;
+import 'services/test_all.dart' as services_all;
 import 'utilities/test_all.dart' as utilities_all;
 import 'watch_manager_test.dart' as watch_manager_test;
 
@@ -18,8 +20,10 @@
   defineReflectiveSuite(() {
     computer_all.main();
     domain_abstract_test.main();
+    domains_all.main();
     flutter_all.main();
     plugin_all.main();
+    services_all.main();
     utilities_all.main();
     watch_manager_test.main();
   }, name: 'src');
diff --git a/pkg/analysis_server/test/src/utilities/flutter_util.dart b/pkg/analysis_server/test/src/utilities/flutter_util.dart
index 6e689e5..286b2c4 100644
--- a/pkg/analysis_server/test/src/utilities/flutter_util.dart
+++ b/pkg/analysis_server/test/src/utilities/flutter_util.dart
@@ -27,6 +27,7 @@
 ''');
 
   newFile('$flutterPkgLibPath/widgets.dart', r'''
+export 'src/widgets/async.dart';
 export 'src/widgets/basic.dart';
 export 'src/widgets/container.dart';
 export 'src/widgets/framework.dart';
@@ -159,6 +160,25 @@
   }
 
   void createSrcWidgets() {
+    newFile('$flutterPkgLibPath/src/widgets/async.dart', r'''
+import 'framework.dart';
+
+class AsyncSnapshot<T> {}
+
+typedef AsyncWidgetBuilder<T> = Widget Function(BuildContext context, AsyncSnapshot<T> snapshot);
+
+class StreamBuilder<T> {
+  const StreamBuilder({
+    Key key,
+    this.initialData,
+    Stream<T> stream,
+    @required this.builder
+  });
+  final T initialData;
+  final AsyncWidgetBuilder<T> builder;
+}
+''');
+
     newFile('$flutterPkgLibPath/src/widgets/basic.dart', r'''
 import 'package:flutter/rendering.dart';
 
diff --git a/pkg/analysis_server/test/src/watch_manager_test.dart b/pkg/analysis_server/test/src/watch_manager_test.dart
index 248c5b0..a5a4a93 100644
--- a/pkg/analysis_server/test/src/watch_manager_test.dart
+++ b/pkg/analysis_server/test/src/watch_manager_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -70,7 +70,7 @@
 }
 
 @reflectiveTest
-class WatchManagerTest extends Object with ResourceProviderMixin {
+class WatchManagerTest with ResourceProviderMixin {
   WatchListener listener;
   WatchManager<Token> manager;
 
@@ -194,7 +194,7 @@
 }
 
 @reflectiveTest
-class WatchNodeTest extends Object with ResourceProviderMixin {
+class WatchNodeTest with ResourceProviderMixin {
   void test_creation_folder() {
     Folder folder = getFolder('/a/b');
     WatchNode node = new WatchNode(folder);
diff --git a/pkg/analysis_server/test/stress/completion/completion_runner.dart b/pkg/analysis_server/test/stress/completion/completion_runner.dart
index 3605038..41a69b8 100644
--- a/pkg/analysis_server/test/stress/completion/completion_runner.dart
+++ b/pkg/analysis_server/test/stress/completion/completion_runner.dart
@@ -103,8 +103,8 @@
         }
         fileCount++;
         output.write('.');
-        ResolveResult result =
-            await context.currentSession.getResolvedAst(path);
+        ResolvedUnitResult result =
+            await context.currentSession.getResolvedUnit(path);
         String content = result.content;
         LineInfo lineInfo = result.lineInfo;
         List<SimpleIdentifier> identifiers = _identifiersIn(result.unit);
@@ -117,7 +117,7 @@
                 content.substring(identifier.end);
             resourceProvider.setOverlay(path,
                 content: modifiedContent, modificationStamp: stamp++);
-            result = await context.currentSession.getResolvedAst(path);
+            result = await context.currentSession.getResolvedUnit(path);
           }
 
           timer.start();
diff --git a/pkg/analysis_server/test/tool/lsp_spec/dart_test.dart b/pkg/analysis_server/test/tool/lsp_spec/dart_test.dart
index 068063c..bcffd7a 100644
--- a/pkg/analysis_server/test/tool/lsp_spec/dart_test.dart
+++ b/pkg/analysis_server/test/tool/lsp_spec/dart_test.dart
@@ -4,45 +4,34 @@
 
 import 'package:test/test.dart';
 
-import '../../../tool/lsp_spec/codegen_dart.dart';
+import '../../../tool/lsp_spec/typescript_parser.dart' as ast;
 
 main() {
-  group('mapType', () {
+  group('dartType mapping', () {
     test('handles basic types', () {
-      expect(mapType(['string']), equals('String'));
-      expect(mapType(['boolean']), equals('bool'));
-      expect(mapType(['any']), equals('dynamic'));
-      expect(mapType(['object']), equals('dynamic'));
-      expect(mapType(['int']), equals('int'));
-      expect(mapType(['num']), equals('num'));
+      expect(_simple('string').dartType, equals('String'));
+      expect(_simple('boolean').dartType, equals('bool'));
+      expect(_simple('any').dartType, equals('dynamic'));
+      expect(_simple('object').dartType, equals('dynamic'));
+      expect(_simple('int').dartType, equals('int'));
+      expect(_simple('num').dartType, equals('num'));
     });
 
     test('handles union types', () {
-      expect(mapType(['string', 'int']), equals('Either2<String, int>'));
-      expect(mapType(['string | int']), equals('Either2<String, int>'));
+      expect(_union(['string', 'int']).dartTypeWithTypeArgs,
+          equals('Either2<String, int>'));
     });
 
     test('handles arrays', () {
-      expect(mapType(['string[]']), equals('List<String>'));
-      expect(mapType(['Array<string>']), equals('List<String>'));
-    });
-
-    test('handles types with args', () {
-      expect(mapType(['Class<string[]>']), equals('Class<List<String>>'));
-      expect(mapType(['Array<string | num>']),
-          equals('List<Either2<String, num>>'));
-    });
-
-    test('handles complex nested types', () {
-      expect(
-          mapType([
-            'Array<string>',
-            'any[]',
-            'Response<A>',
-            'Request<Array<string | num>>'
-          ]),
-          equals(
-              'Either4<List<String>, List<dynamic>, Response<A>, Request<List<Either2<String, num>>>>'));
+      expect(_array('string').dartTypeWithTypeArgs, equals('List<String>'));
     });
   });
 }
+
+ast.Type _simple(String name) =>
+    new ast.Type(new ast.Token(ast.TokenType.IDENTIFIER, name), []);
+
+ast.ArrayType _array(String name) => new ast.ArrayType(_simple(name));
+
+ast.UnionType _union(List<String> names) =>
+    new ast.UnionType(names.map(_simple).toList());
diff --git a/pkg/analysis_server/test/tool/lsp_spec/json_test.dart b/pkg/analysis_server/test/tool/lsp_spec/json_test.dart
index e12b850..b352d18 100644
--- a/pkg/analysis_server/test/tool/lsp_spec/json_test.dart
+++ b/pkg/analysis_server/test/tool/lsp_spec/json_test.dart
@@ -18,23 +18,21 @@
     });
 
     test('returns correct output for union types', () {
-      final message =
-          new RequestMessage(new Either2.t1(1), "test", null, "test");
+      final message = new RequestMessage(
+          new Either2<num, String>.t1(1), Method.shutdown, null, "test");
       String output = json.encode(message.toJson());
-      expect(output, equals('{"id":1,"method":"test","jsonrpc":"test"}'));
+      expect(output, equals('{"id":1,"method":"shutdown","jsonrpc":"test"}'));
     });
 
     test('returns correct output for union types containing interface types',
         () {
-      final params = new Either2<String, WorkspaceClientCapabilities>.t2(
-          new WorkspaceClientCapabilities(
-        true,
-        null,
-        null,
-        null,
-      ));
+      final params = new Either2<String, TextDocumentItem>.t2(
+          new TextDocumentItem('!uri', '!language', 1, '!text'));
       String output = json.encode(params);
-      expect(output, equals('{"applyEdit":true}'));
+      expect(
+          output,
+          equals(
+              '{"uri":"!uri","languageId":"!language","version":1,"text":"!text"}'));
     });
 
     test('returns correct output for types with lists', () {
@@ -45,7 +43,7 @@
       final codeAction = new Diagnostic(
         range,
         DiagnosticSeverity.Error,
-        new Either2.t2('test_err'),
+        'test_err',
         '/tmp/source.dart',
         'err!!',
         [new DiagnosticRelatedInformation(location, 'message')],
@@ -95,51 +93,81 @@
 
   group('fromJson', () {
     test('parses JSON for types with unions (left side)', () {
-      final input = '{"id":1,"method":"test","jsonrpc":"test"}';
-      final message = new RequestMessage.fromJson(jsonDecode(input));
+      final input = '{"id":1,"method":"shutdown","jsonrpc":"test"}';
+      final message = RequestMessage.fromJson(jsonDecode(input));
       expect(message.id, equals(new Either2<num, String>.t1(1)));
       expect(message.id.valueEquals(1), isTrue);
       expect(message.jsonrpc, "test");
-      expect(message.method, "test");
+      expect(message.method, Method.shutdown);
     });
 
     test('parses JSON for types with unions (right side)', () {
-      final input = '{"id":"one","method":"test","jsonrpc":"test"}';
-      final message = new RequestMessage.fromJson(jsonDecode(input));
+      final input = '{"id":"one","method":"shutdown","jsonrpc":"test"}';
+      final message = RequestMessage.fromJson(jsonDecode(input));
       expect(message.id, equals(new Either2<num, String>.t2("one")));
       expect(message.id.valueEquals("one"), isTrue);
       expect(message.jsonrpc, "test");
-      expect(message.method, "test");
+      expect(message.method, Method.shutdown);
+    });
+
+    test('parses JSON with nulls for unions that allow null', () {
+      final input = '{"id":null,"jsonrpc":"test"}';
+      final message = ResponseMessage.fromJson(jsonDecode(input));
+      expect(message.id, isNull);
+    });
+
+    test('parses JSON with nulls for unions that allow null', () {
+      final input = '{"method":"test","jsonrpc":"test"}';
+      final message = NotificationMessage.fromJson(jsonDecode(input));
+      expect(message.params, isNull);
     });
   });
 
-  test('objects with lists and enums can round-trip through to json and back',
-      () {
-    final obj = new ClientCapabilities(
-        new WorkspaceClientCapabilities(
-            true,
-            false,
-            [ResourceOperationKind.Create, ResourceOperationKind.Delete],
-            FailureHandlingKind.Undo),
-        new TextDocumentClientCapabilities(true, false, true, false),
-        null);
+  test('objects with lists can round-trip through to json and back', () {
+    final obj = new InitializeParams(1, '!root', null, null,
+        new ClientCapabilities(null, null, null), '!trace', [
+      new WorkspaceFolder('!uri1', '!name1'),
+      new WorkspaceFolder('!uri2', '!name2'),
+    ]);
     final String json = jsonEncode(obj);
-    final restoredObj = new ClientCapabilities.fromJson(jsonDecode(json));
+    final restoredObj = InitializeParams.fromJson(jsonDecode(json));
 
-    expect(restoredObj.workspace.applyEdit, equals(obj.workspace.applyEdit));
-    expect(restoredObj.workspace.documentChanges,
-        equals(obj.workspace.documentChanges));
-    expect(restoredObj.workspace.resourceOperations,
-        equals(obj.workspace.resourceOperations));
-    expect(restoredObj.workspace.failureHandling,
-        equals(obj.workspace.failureHandling));
-    expect(restoredObj.textDocument.didSave, equals(obj.textDocument.didSave));
-    expect(restoredObj.textDocument.dynamicRegistration,
-        equals(obj.textDocument.dynamicRegistration));
     expect(
-        restoredObj.textDocument.willSave, equals(obj.textDocument.willSave));
-    expect(restoredObj.textDocument.willSaveWaitUntil,
-        equals(obj.textDocument.willSaveWaitUntil));
-    expect(restoredObj.experimental, equals(obj.experimental));
+        restoredObj.workspaceFolders, hasLength(obj.workspaceFolders.length));
+    for (var i = 0; i < obj.workspaceFolders.length; i++) {
+      expect(restoredObj.workspaceFolders[i].name,
+          equals(obj.workspaceFolders[i].name));
+      expect(restoredObj.workspaceFolders[i].uri,
+          equals(obj.workspaceFolders[i].uri));
+    }
+  });
+
+  test('objects with enums can round-trip through to json and back', () {
+    final obj = new FoldingRange(1, 2, 3, 4, FoldingRangeKind.Comment);
+    final String json = jsonEncode(obj);
+    final restoredObj = FoldingRange.fromJson(jsonDecode(json));
+
+    expect(restoredObj.startLine, equals(obj.startLine));
+    expect(restoredObj.startCharacter, equals(obj.startCharacter));
+    expect(restoredObj.endLine, equals(obj.endLine));
+    expect(restoredObj.endCharacter, equals(obj.endCharacter));
+    expect(restoredObj.kind, equals(obj.kind));
+  });
+
+  test('objects with maps can round-trip through to json and back', () {
+    final start = new Position(1, 1);
+    final end = new Position(2, 2);
+    final range = new Range(start, end);
+    final obj = new WorkspaceEdit(<String, List<TextEdit>>{
+      'fileA': [new TextEdit(range, 'text A')],
+      'fileB': [new TextEdit(range, 'text B')]
+    }, null);
+    final String json = jsonEncode(obj);
+    final restoredObj = WorkspaceEdit.fromJson(jsonDecode(json));
+
+    expect(restoredObj.documentChanges, equals(obj.documentChanges));
+    expect(restoredObj.changes, equals(obj.changes));
+    expect(restoredObj.changes.keys, equals(obj.changes.keys));
+    expect(restoredObj.changes.values, equals(obj.changes.values));
   });
 }
diff --git a/pkg/analysis_server/test/tool/lsp_spec/matchers.dart b/pkg/analysis_server/test/tool/lsp_spec/matchers.dart
new file mode 100644
index 0000000..72ee321
--- /dev/null
+++ b/pkg/analysis_server/test/tool/lsp_spec/matchers.dart
@@ -0,0 +1,82 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analysis_server/lsp_protocol/protocol_generated.dart';
+import 'package:matcher/matcher.dart';
+
+import '../../../tool/lsp_spec/typescript_parser.dart';
+
+Matcher isSimpleType(String name) => new SimpleTypeMatcher(name);
+
+class SimpleTypeMatcher extends Matcher {
+  final String _expectedName;
+  const SimpleTypeMatcher(this._expectedName);
+
+  bool matches(item, Map matchState) {
+    return item is Type && item.name == _expectedName;
+  }
+
+  Description describe(Description description) =>
+      description.add('a type with the name $_expectedName');
+
+  Description describeMismatch(
+      item, Description mismatchDescription, Map matchState, bool verbose) {
+    if (item is Type) {
+      return mismatchDescription
+          .add('has the name ')
+          .addDescriptionOf(item.name);
+    } else {
+      return mismatchDescription.add('is not a Type');
+    }
+  }
+}
+
+Matcher isArrayOf(Matcher matcher) =>
+    new ArrayTypeMatcher(wrapMatcher(matcher));
+
+class ArrayTypeMatcher extends Matcher {
+  final Matcher _elementTypeMatcher;
+  const ArrayTypeMatcher(this._elementTypeMatcher);
+
+  bool matches(item, Map matchState) {
+    return item is ArrayType &&
+        _elementTypeMatcher.matches(item.elementType, matchState);
+  }
+
+  Description describe(Description description) =>
+      description.add('an array of ').addDescriptionOf(_elementTypeMatcher);
+
+  Description describeMismatch(
+      item, Description mismatchDescription, Map matchState, bool verbose) {
+    if (item is ArrayType) {
+      return _elementTypeMatcher.describeMismatch(
+          item, mismatchDescription, matchState, verbose);
+    } else {
+      return mismatchDescription.add('is not an ArrayType');
+    }
+  }
+}
+
+Matcher isMapOf(Matcher indexMatcher, Matcher valueMatcher) =>
+    new MapTypeMatcher(wrapMatcher(indexMatcher), wrapMatcher(valueMatcher));
+
+class MapTypeMatcher extends Matcher {
+  final Matcher _indexMatcher, _valueMatcher;
+  const MapTypeMatcher(this._indexMatcher, this._valueMatcher);
+
+  bool matches(item, Map matchState) {
+    return item is MapType &&
+        _indexMatcher.matches(item.indexType, matchState) &&
+        _valueMatcher.matches(item.valueType, matchState);
+  }
+
+  Description describe(Description description) => description
+      .add('a MapType where index is ')
+      .addDescriptionOf(_indexMatcher)
+      .add(' and value is ')
+      .addDescriptionOf(_valueMatcher);
+}
+
+Matcher isResponseError(ErrorCodes code) => const TypeMatcher<ResponseError>()
+    .having((e) => e.code, 'code', equals(code));
diff --git a/pkg/analysis_server/test/tool/lsp_spec/test_all.dart b/pkg/analysis_server/test/tool/lsp_spec/test_all.dart
new file mode 100644
index 0000000..1edfb80
--- /dev/null
+++ b/pkg/analysis_server/test/tool/lsp_spec/test_all.dart
@@ -0,0 +1,19 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'dart_test.dart' as dart_test;
+import 'json_test.dart' as json_test;
+import 'markdown_test.dart' as markdown_test;
+import 'typescript_test.dart' as typescript_test;
+
+main() {
+  defineReflectiveSuite(() {
+    dart_test.main();
+    json_test.main();
+    markdown_test.main();
+    typescript_test.main();
+  }, name: 'lsp-tool');
+}
diff --git a/pkg/analysis_server/test/tool/lsp_spec/typescript_test.dart b/pkg/analysis_server/test/tool/lsp_spec/typescript_test.dart
index 1fad598..d03b5fb 100644
--- a/pkg/analysis_server/test/tool/lsp_spec/typescript_test.dart
+++ b/pkg/analysis_server/test/tool/lsp_spec/typescript_test.dart
@@ -4,7 +4,8 @@
 
 import 'package:test/test.dart';
 
-import '../../../tool/lsp_spec/typescript.dart';
+import '../../../tool/lsp_spec/typescript_parser.dart';
+import 'matchers.dart';
 
 main() {
   group('typescript parser', () {
@@ -20,22 +21,57 @@
 	options?: OptionKind[];
 }
     ''';
-      final List<ApiItem> output = extractTypes(input);
+      final List<AstNode> output = parseFile(input);
       expect(output, hasLength(1));
       expect(output[0], const TypeMatcher<Interface>());
       final Interface interface = output[0];
       expect(interface.name, equals('SomeOptions'));
-      expect(interface.comment, equals('Some options.'));
+      expect(interface.commentText, equals('Some options.'));
       expect(interface.baseTypes, hasLength(0));
       expect(interface.members, hasLength(1));
       expect(interface.members[0], const TypeMatcher<Field>());
       final Field field = interface.members[0];
       expect(field.name, equals('options'));
-      expect(field.comment, equals('''Options used by something.'''));
+      expect(field.commentText, equals('''Options used by something.'''));
       expect(field.allowsNull, isFalse);
       expect(field.allowsUndefined, isTrue);
-      expect(field.types, hasLength(1));
-      expect(field.types[0], equals('OptionKind[]'));
+      expect(field.type, isArrayOf(isSimpleType('OptionKind')));
+    });
+
+    test('parses an interface with a field with an inline/unnamed type', () {
+      final String input = '''
+export interface Capabilities {
+	textDoc?: {
+    deprecated?: bool;
+  };
+}
+    ''';
+      final List<AstNode> output = parseFile(input);
+      // Length is two because we'll fabricate the type of textDoc.
+      expect(output, hasLength(2));
+
+      // Check there was a full fabricarted interface for this type.
+      expect(output[0], const TypeMatcher<Interface>());
+      Interface interface = output[0];
+      expect(interface.name, equals('CapabilitiesTextDoc'));
+      expect(interface.members, hasLength(1));
+      expect(interface.members[0], const TypeMatcher<Field>());
+      Field field = interface.members[0];
+      expect(field.name, equals('deprecated'));
+      expect(field.allowsNull, isFalse);
+      expect(field.allowsUndefined, isTrue);
+      expect(field.type, isSimpleType('bool'));
+      expect(field.allowsUndefined, isTrue);
+
+      expect(output[1], const TypeMatcher<Interface>());
+      interface = output[1];
+      expect(interface.name, equals('Capabilities'));
+      expect(interface.members, hasLength(1));
+      expect(interface.members[0], const TypeMatcher<Field>());
+      field = interface.members[0];
+      expect(field.name, equals('textDoc'));
+      expect(field.allowsNull, isFalse);
+      expect(field.type, isSimpleType('CapabilitiesTextDoc'));
     });
 
     test('parses an interface with multiple fields', () {
@@ -51,7 +87,7 @@
 	options1: any;
 }
     ''';
-      final List<ApiItem> output = extractTypes(input);
+      final List<AstNode> output = parseFile(input);
       expect(output, hasLength(1));
       expect(output[0], const TypeMatcher<Interface>());
       final Interface interface = output[0];
@@ -60,7 +96,7 @@
         expect(interface.members[i], const TypeMatcher<Field>());
         final Field field = interface.members[i];
         expect(field.name, equals('options$i'));
-        expect(field.comment, equals('''Options$i used by something.'''));
+        expect(field.commentText, equals('''Options$i used by something.'''));
       });
     });
 
@@ -70,7 +106,7 @@
 	data?: D;
 }
     ''';
-      final List<ApiItem> output = extractTypes(input);
+      final List<AstNode> output = parseFile(input);
       expect(output, hasLength(1));
       expect(output[0], const TypeMatcher<Interface>());
       final Interface interface = output[0];
@@ -78,21 +114,21 @@
       final Field field = interface.members.first;
       expect(field, const TypeMatcher<Field>());
       expect(field.name, equals('data'));
-      expect(field.allowsUndefined, true);
-      expect(field.allowsNull, false);
-      expect(field.types, equals(['D']));
+      expect(field.allowsUndefined, isTrue);
+      expect(field.allowsNull, isFalse);
+      expect(field.type, isSimpleType('D'));
     });
 
     test('parses an interface with Arrays in Array<T> format', () {
       final String input = '''
-export interface RequestMessage {
+export interface MyMessage {
 	/**
 	 * The method's params.
 	 */
 	params?: Array<any> | object;
 }
     ''';
-      final List<ApiItem> output = extractTypes(input);
+      final List<AstNode> output = parseFile(input);
       expect(output, hasLength(1));
       expect(output[0], const TypeMatcher<Interface>());
       final Interface interface = output[0];
@@ -100,10 +136,32 @@
       final Field field = interface.members.first;
       expect(field, const TypeMatcher<Field>());
       expect(field.name, equals('params'));
-      expect(field.comment, equals('''The method's params.'''));
-      expect(field.allowsUndefined, true);
-      expect(field.allowsNull, false);
-      expect(field.types, equals(['Array<any>', 'object']));
+      expect(field.commentText, equals('''The method's params.'''));
+      expect(field.allowsUndefined, isTrue);
+      expect(field.allowsNull, isFalse);
+      expect(field.type, const TypeMatcher<UnionType>());
+      UnionType union = field.type;
+      expect(union.types, hasLength(2));
+      expect(union.types[0], isArrayOf(isSimpleType('any')));
+      expect(union.types[1], isSimpleType('object'));
+    });
+
+    test('parses an interface with a map into a MapType', () {
+      final String input = '''
+export interface WorkspaceEdit {
+	changes: { [uri: string]: TextEdit[]; };
+}
+    ''';
+      final List<AstNode> output = parseFile(input);
+      expect(output, hasLength(1));
+      expect(output[0], const TypeMatcher<Interface>());
+      final Interface interface = output[0];
+      expect(interface.members, hasLength(1));
+      final Field field = interface.members.first;
+      expect(field, const TypeMatcher<Field>());
+      expect(field.name, equals('changes'));
+      expect(field.type,
+          isMapOf(isSimpleType('string'), isArrayOf(isSimpleType('TextEdit'))));
     });
 
     test('flags nullable undefined values', () {
@@ -115,7 +173,7 @@
   canBeUndefined?: string;
 }
     ''';
-      final List<ApiItem> output = extractTypes(input);
+      final List<AstNode> output = parseFile(input);
       final Interface interface = output[0];
       expect(interface.members, hasLength(4));
       interface.members.forEach((m) => expect(m, const TypeMatcher<Field>()));
@@ -155,9 +213,9 @@
   a: a;
 }
     ''';
-      final List<ApiItem> output = extractTypes(input);
+      final List<AstNode> output = parseFile(input);
       final Interface interface = output[0];
-      expect(interface.comment, equals('''
+      expect(interface.commentText, equals('''
 Describes the what this class in lots of words that wrap onto multiple lines that will need re-wrapping to format nicely when converted into Dart.
 
 Blank lines should remain in-tact, as should:
@@ -176,12 +234,12 @@
       final String input = '''
 export type DocumentSelector = DocumentFilter[];
     ''';
-      final List<ApiItem> output = extractTypes(input);
+      final List<AstNode> output = parseFile(input);
       expect(output, hasLength(1));
       expect(output[0], const TypeMatcher<TypeAlias>());
       final TypeAlias typeAlias = output[0];
       expect(typeAlias.name, equals('DocumentSelector'));
-      expect(typeAlias.baseType, equals('DocumentFilter[]'));
+      expect(typeAlias.baseType, isArrayOf(isSimpleType('DocumentFilter')));
     });
 
     test('parses a namespace of constants', () {
@@ -203,7 +261,7 @@
 	export const Rename: ResourceOperationKind = 'rename';
 }
     ''';
-      final List<ApiItem> output = extractTypes(input);
+      final List<AstNode> output = parseFile(input);
       expect(output, hasLength(1));
       expect(output[0], const TypeMatcher<Namespace>());
       final Namespace namespace = output[0];
@@ -213,16 +271,16 @@
           delete = namespace.members[1],
           rename = namespace.members[2];
       expect(create.name, equals('Create'));
-      expect(create.type, equals('ResourceOperationKind'));
-      expect(
-          create.comment, equals('Supports creating new files and folders.'));
+      expect(create.type, isSimpleType('ResourceOperationKind'));
+      expect(create.commentText,
+          equals('Supports creating new files and folders.'));
       expect(rename.name, equals('Rename'));
-      expect(rename.type, equals('ResourceOperationKind'));
-      expect(rename.comment,
+      expect(rename.type, isSimpleType('ResourceOperationKind'));
+      expect(rename.commentText,
           equals('Supports renaming existing files and folders.'));
       expect(delete.name, equals('Delete'));
-      expect(delete.type, equals('ResourceOperationKind'));
-      expect(delete.comment,
+      expect(delete.type, isSimpleType('ResourceOperationKind'));
+      expect(delete.commentText,
           equals('Supports deleting existing files and folders.'));
     });
   });
diff --git a/pkg/analysis_server/tool/instrumentation/log/log.dart b/pkg/analysis_server/tool/instrumentation/log/log.dart
index 011581a..10dfd90 100644
--- a/pkg/analysis_server/tool/instrumentation/log/log.dart
+++ b/pkg/analysis_server/tool/instrumentation/log/log.dart
@@ -870,7 +870,7 @@
 /**
  * A log entry representing a communication between the server and a plugin.
  */
-abstract class PluginEntryMixin {
+mixin PluginEntryMixin {
   /**
    * The components describing the plugin associated with this entry.
    */
diff --git a/pkg/analysis_server/tool/lsp_spec/codegen_dart.dart b/pkg/analysis_server/tool/lsp_spec/codegen_dart.dart
index 79b2b63..c95ca9c 100644
--- a/pkg/analysis_server/tool/lsp_spec/codegen_dart.dart
+++ b/pkg/analysis_server/tool/lsp_spec/codegen_dart.dart
@@ -3,16 +3,30 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:dart_style/dart_style.dart';
-import 'package:meta/meta.dart';
 
 import 'typescript.dart';
+import 'typescript_parser.dart';
 
 final formatter = new DartFormatter();
 Map<String, Interface> _interfaces = {};
+// TODO(dantup): Rename namespaces -> enums since they're always that now.
 Map<String, Namespace> _namespaces = {};
 Map<String, TypeAlias> _typeAliases = {};
 
-String generateDartForTypes(List<ApiItem> types) {
+/// Whether our enum class allows any value (eg. should always return true
+/// from canParse() for the correct type). This is to allow us to have some
+/// type safety for these values but without restricting which values are allowed.
+/// This is to support things like custom error codes and also future changes
+/// in the spec (it's important the server doesn't crash on deserialising
+/// newer values).
+bool enumClassAllowsAnyValue(String name) {
+  // TODO(dantup): This should return true by default, and allow opt-out for
+  // those things we know are not supported. This behaviour matches the old
+  // code in order to simplify diffs while migrating.
+  return name == 'ErrorCodes' || name == 'CodeActionKind';
+}
+
+String generateDartForTypes(List<AstNode> types) {
   // Keep maps of items we may need to look up quickly later.
   types
       .whereType<TypeAlias>()
@@ -29,8 +43,15 @@
   return formattedCode.trim() + '\n'; // Ensure a single trailing newline.
 }
 
-List<String> _extractTypesFromUnion(String type) {
-  return type.split('|').map((t) => t.trim()).toList();
+TypeBase resolveTypeAlias(TypeBase type, {resolveEnumClasses: false}) {
+  if (type is Type && _typeAliases.containsKey(type.name)) {
+    final alias = _typeAliases[type.name];
+    // Only follow the type if we're not an enum, or we wanted to follow enums.
+    if (!_namespaces.containsKey(alias.name) || resolveEnumClasses) {
+      return alias.baseType;
+    }
+  }
+  return type;
 }
 
 String _formatCode(String code) {
@@ -52,45 +73,28 @@
   return interface.members
       .whereType<Field>()
       .followedBy(interface.baseTypes
-          .map((name) => _getAllFields(_interfaces[name]))
+          // This cast is safe because base types are always real types.
+          .map((type) => _getAllFields(_interfaces[(type as Type).name]))
           .expand((ts) => ts))
       .toList();
 }
 
-String _getListType(String type) {
-  return type.substring('List<'.length, type.length - 1);
-}
-
 /// Returns a copy of the list sorted by name.
-List<ApiItem> _getSorted(List<ApiItem> items) {
+List<AstNode> _getSorted(List<AstNode> items) {
   final sortedList = items.toList();
   sortedList.sort((item1, item2) => item1.name.compareTo(item2.name));
   return sortedList;
 }
 
-List<String> _getUnionTypes(String type) {
-  return type
-      .substring('EitherX<'.length, type.length - 1)
-      .split(',')
-      .map((s) => s.trim())
-      .toList();
-}
-
-bool _isList(String type) {
-  return type.startsWith('List<') && type.endsWith('>');
-}
-
-bool _isLiteral(String type) {
+bool _isSimpleType(TypeBase type) {
   const literals = ['num', 'String', 'bool'];
-  return literals.contains(type);
+  return type is Type && literals.contains(type.dartType);
 }
 
-bool _isSpecType(String type) {
-  return _interfaces.containsKey(type) || _namespaces.containsKey(type);
-}
-
-bool _isUnion(String type) {
-  return type.startsWith('Either') && type.endsWith('>');
+bool _isSpecType(TypeBase type) {
+  return type is Type &&
+      (_interfaces.containsKey(type.name) ||
+          (_namespaces.containsKey(type.name)));
 }
 
 /// Maps reserved words and identifiers that cause issues in field names.
@@ -104,57 +108,6 @@
   return map[identifier] ?? identifier;
 }
 
-/// Maps a TypeScript type on to a Dart type, including following TypeAliases.
-@visibleForTesting
-String mapType(List<String> types) {
-  const mapping = <String, String>{
-    'boolean': 'bool',
-    'string': 'String',
-    'number': 'num',
-    'any': 'dynamic',
-    'object': 'dynamic',
-    // Special cases that are hard to parse or anonymous types.
-    '{ [uri: string]: TextEdit[]; }': 'Map<String, List<TextEdit>>',
-    '{ language: string; value: string }': 'MarkedStringWithLanguage'
-  };
-  if (types.length > 4) {
-    throw 'Unions of more than 4 types are not supported.';
-  }
-  if (types.length >= 2) {
-    final typeArgs = types.map((t) => mapType([t])).join(', ');
-    return 'Either${types.length}<$typeArgs>';
-  }
-
-  final type = types.first;
-  if (type.endsWith('[]')) {
-    return 'List<${mapType([type.substring(0, type.length - 2)])}>';
-  } else if (type.startsWith('Array<') && type.endsWith('>')) {
-    return 'List<${mapType([type.substring(6, type.length - 1)])}>';
-  } else if (type.contains('<')) {
-    // For types with type args, we need to map the type and each type arg.
-    final declaredType = _stripTypeArgs(type);
-    final typeArgs = type
-        .substring(declaredType.length + 1, type.length - 1)
-        .split(',')
-        .map((t) => t.trim());
-    return '${mapType([
-      declaredType
-    ])}<${typeArgs.map((t) => mapType([t])).join(', ')}>';
-  } else if (type.contains('|')) {
-    // It's possible we ended up with nested unions that the parsing.
-    // TODO(dantup): This is now partly done during parsing and partly done
-    // here. Maybe consider removing from typescript.dart and just carrying a
-    // String through so the logic is all in one place in this function?
-    return mapType(_extractTypesFromUnion(type));
-  } else if (_typeAliases.containsKey(type)) {
-    return mapType([_typeAliases[type].baseType]);
-  } else if (mapping.containsKey(type)) {
-    return mapType([mapping[type]]);
-  } else {
-    return type;
-  }
-}
-
 String _rewriteCommentReference(String comment) {
   final commentReferencePattern = new RegExp(r'\[([\w ]+)\]\(#(\w+)\)');
   return comment.replaceAllMapped(commentReferencePattern, (m) {
@@ -168,10 +121,6 @@
   });
 }
 
-String _stripTypeArgs(String typeName) => typeName.contains('<')
-    ? typeName.substring(0, typeName.indexOf('<'))
-    : typeName;
-
 Iterable<String> _wrapLines(List<String> lines, int maxLength) sync* {
   lines = lines.map((l) => l.trimRight()).toList();
   for (var line in lines) {
@@ -205,8 +154,7 @@
       _getAllFields(interface).where((f) => !f.allowsUndefined);
   for (var field in requiredFields) {
     buffer.write(" && obj.containsKey('${field.name}') && ");
-    _writeTypeCheckCondition(
-        buffer, "obj['${field.name}']", mapType(field.types));
+    _writeTypeCheckCondition(buffer, "obj['${field.name}']", field.type);
   }
   buffer
     ..writeln(';')
@@ -216,7 +164,7 @@
 
 void _writeConst(IndentableStringBuffer buffer, Const cons) {
   _writeDocCommentsAndAnnotations(buffer, cons);
-  buffer.writeIndentedln('static const ${cons.name} = ${cons.value};');
+  buffer.writeIndentedln('static const ${cons.name} = ${cons.valueAsLiteral};');
 }
 
 void _writeConstructor(IndentableStringBuffer buffer, Interface interface) {
@@ -225,7 +173,7 @@
     return;
   }
   buffer
-    ..writeIndented('${_stripTypeArgs(interface.name)}(')
+    ..writeIndented('${interface.name}(')
     ..write(allFields.map((field) => 'this.${field.name}').join(', '))
     ..write(')');
   final fieldsWithValidation =
@@ -252,51 +200,65 @@
 }
 
 void _writeDocCommentsAndAnnotations(
-    IndentableStringBuffer buffer, ApiItem item) {
-  var comment = item.comment?.trim();
-  if (comment == null || comment.length == 0) {
-    return;
+    IndentableStringBuffer buffer, AstNode node) {
+  var comment = node.commentText?.trim();
+  if (comment != null && comment.isNotEmpty) {
+    comment = _rewriteCommentReference(comment);
+    Iterable<String> lines = comment.split('\n');
+    // Wrap at 80 - 4 ('/// ') - indent characters.
+    lines = _wrapLines(lines, (80 - 4 - buffer.totalIndent).clamp(0, 80));
+    lines.forEach((l) => buffer.writeIndentedln('/// $l'.trim()));
   }
-  comment = _rewriteCommentReference(comment);
-  Iterable<String> lines = comment.split('\n');
-  // Wrap at 80 - 4 ('/// ') - indent characters.
-  lines = _wrapLines(lines, (80 - 4 - buffer.totalIndent).clamp(0, 80));
-  lines.forEach((l) => buffer.writeIndentedln('/// $l'.trim()));
-  if (item.isDeprecated) {
+  if (node.isDeprecated) {
     buffer.writeIndentedln('@core.deprecated');
   }
 }
 
 void _writeEnumClass(IndentableStringBuffer buffer, Namespace namespace) {
   _writeDocCommentsAndAnnotations(buffer, namespace);
+  final consts = namespace.members.cast<Const>().toList();
+  final allowsAnyValue = enumClassAllowsAnyValue(namespace.name);
+  final constructorName = allowsAnyValue ? '' : '._';
+  final typeOfValues =
+      resolveTypeAlias(consts.first.type, resolveEnumClasses: true);
+
   buffer
     ..writeln('class ${namespace.name} {')
     ..indent()
-    ..writeIndentedln('const ${namespace.name}._(this._value);')
+    ..writeIndentedln('const ${namespace.name}$constructorName(this._value);')
     ..writeIndentedln('const ${namespace.name}.fromJson(this._value);')
     ..writeln()
-    ..writeIndentedln('final Object _value;')
+    ..writeIndentedln('final ${typeOfValues.dartTypeWithTypeArgs} _value;')
     ..writeln()
     ..writeIndentedln('static bool canParse(Object obj) {')
-    ..indent()
-    ..writeIndentedln('switch (obj) {')
     ..indent();
-  namespace.members.whereType<Const>().forEach((cons) {
-    buffer..writeIndentedln('case ${cons.value}:');
-  });
+  if (allowsAnyValue) {
+    buffer.writeIndentedln('return ');
+    _writeTypeCheckCondition(buffer, 'obj', consts.first.type);
+    buffer.writeln(';');
+  } else {
+    buffer
+      ..writeIndentedln('switch (obj) {')
+      ..indent();
+    consts.forEach((cons) {
+      buffer..writeIndentedln('case ${cons.valueAsLiteral}:');
+    });
+    buffer
+      ..indent()
+      ..writeIndentedln('return true;')
+      ..outdent()
+      ..outdent()
+      ..writeIndentedln('}')
+      ..writeIndentedln('return false;');
+  }
   buffer
-    ..indent()
-    ..writeIndentedln('return true;')
-    ..outdent()
-    ..writeIndentedln('}')
-    ..writeIndentedln('return false;')
     ..outdent()
     ..writeIndentedln('}');
   namespace.members.whereType<Const>().forEach((cons) {
     _writeDocCommentsAndAnnotations(buffer, cons);
     buffer
       ..writeIndentedln(
-          'static const ${_makeValidIdentifier(cons.name)} = const ${namespace.name}._(${cons.value});');
+          'static const ${_makeValidIdentifier(cons.name)} = const ${namespace.name}$constructorName(${cons.valueAsLiteral});');
   });
   buffer
     ..writeln()
@@ -313,58 +275,107 @@
     ..writeln();
 }
 
+void _writeEquals(IndentableStringBuffer buffer, Interface interface) {
+  buffer
+    ..writeIndentedln('@override')
+    ..writeIndentedln('bool operator ==(other) {')
+    ..indent()
+    ..writeIndentedln('if (other is ${interface.name}) {')
+    ..indent()
+    ..writeIndented('return ');
+  for (var field in _getAllFields(interface)) {
+    final type = field.type;
+    if (type is ArrayType) {
+      final elementType = type.elementType;
+      final elementDartType = elementType.dartTypeWithTypeArgs;
+      buffer.write(
+          'listEqual(${field.name}, other.${field.name}, ($elementDartType a, $elementDartType b) => a == b) && ');
+    } else if (type is MapType) {
+      final valueType = type.valueType;
+      final valueDartType = valueType.dartTypeWithTypeArgs;
+      buffer.write(
+          'mapEqual(${field.name}, other.${field.name}, ($valueDartType a, $valueDartType b) => a == b) && ');
+    } else {
+      buffer.write('${field.name} == other.${field.name} && ');
+    }
+  }
+  buffer
+    ..writeln('true;')
+    ..outdent()
+    ..writeIndentedln('}')
+    ..writeIndentedln('return false;')
+    ..outdent()
+    ..writeIndentedln('}');
+}
+
 void _writeField(IndentableStringBuffer buffer, Field field) {
   _writeDocCommentsAndAnnotations(buffer, field);
   buffer
     ..writeIndented('final ')
-    ..write(mapType(field.types))
+    ..write(field.type.dartTypeWithTypeArgs)
     ..writeln(' ${field.name};');
 }
 
 void _writeFromJsonCode(
-    IndentableStringBuffer buffer, List<String> types, String valueCode) {
-  final type = mapType(types);
-  if (_isLiteral(type)) {
+    IndentableStringBuffer buffer, TypeBase type, String valueCode,
+    {bool allowsNull}) {
+  type = resolveTypeAlias(type);
+
+  if (_isSimpleType(type)) {
     buffer.write("$valueCode");
   } else if (_isSpecType(type)) {
     // Our own types have fromJson() constructors we can call.
-    buffer.write("$valueCode != null ? new $type.fromJson($valueCode) : null");
-  } else if (_isList(type)) {
-    // Lists need to be mapped so we can recursively call (they may need fromJson).
+    buffer.write(
+        "$valueCode != null ? ${type.dartType}.fromJson${type.typeArgsString}($valueCode) : null");
+  } else if (type is ArrayType) {
+    // Lists need to be map()'d so we can recursively call writeFromJsonCode
+    // as they may need fromJson on each element.
     buffer.write("$valueCode?.map((item) => ");
-    final listType = _getListType(type);
-    _writeFromJsonCode(buffer, [listType], 'item');
-    buffer.write(')?.cast<$listType>()?.toList()');
-  } else if (_isUnion(type)) {
-    _writeFromJsonCodeForUnion(buffer, types, valueCode);
+    _writeFromJsonCode(buffer, type.elementType, 'item',
+        allowsNull: allowsNull);
+    buffer
+        .write(')?.cast<${type.elementType.dartTypeWithTypeArgs}>()?.toList()');
+  } else if (type is MapType) {
+    // Maps need to be map()'d so we can recursively call writeFromJsonCode as
+    // they may need fromJson on each key or value.
+    buffer.write('$valueCode?.map((key, value) => new MapEntry(');
+    _writeFromJsonCode(buffer, type.indexType, 'key', allowsNull: allowsNull);
+    buffer.write(', ');
+    _writeFromJsonCode(buffer, type.valueType, 'value', allowsNull: allowsNull);
+    buffer.write(
+        '))?.cast<${type.indexType.dartTypeWithTypeArgs}, ${type.valueType.dartTypeWithTypeArgs}>()');
+  } else if (type is UnionType) {
+    _writeFromJsonCodeForUnion(buffer, type, valueCode, allowsNull: allowsNull);
   } else {
     buffer.write("$valueCode");
   }
 }
 
 void _writeFromJsonCodeForUnion(
-    IndentableStringBuffer buffer, List<String> types, String valueCode) {
-  final unionTypeName = mapType(types);
+    IndentableStringBuffer buffer, UnionType union, String valueCode,
+    {bool allowsNull}) {
   // Write a check against each type, eg.:
   // x is y ? new Either.tx(x) : (...)
   var hasIncompleteCondition = false;
   var unclosedParens = 0;
-  for (var i = 0; i < types.length; i++) {
-    final dartType = mapType([types[i]]);
+  for (var i = 0; i < union.types.length; i++) {
+    final type = union.types[i];
+    final isDynamic = type.dartType == 'dynamic';
 
     // Dynamic matches all type checks, so only emit it if required.
-    if (dartType != 'dynamic') {
-      _writeTypeCheckCondition(buffer, valueCode, dartType);
+    if (!isDynamic) {
+      _writeTypeCheckCondition(buffer, valueCode, type);
       buffer.write(' ? ');
     }
 
     // The code to construct a value with this "side" of the union.
-    buffer.write('new $unionTypeName.t${i + 1}(');
-    _writeFromJsonCode(buffer, [dartType], valueCode); // Call recursively!
+    buffer.write('new ${union.dartTypeWithTypeArgs}.t${i + 1}(');
+    _writeFromJsonCode(buffer, type, valueCode,
+        allowsNull: allowsNull); // Call recursively!
     buffer.write(')');
 
     // If we output the type condition at the top, prepare for the next condition.
-    if (dartType != 'dynamic') {
+    if (!isDynamic) {
       buffer.write(' : (');
       hasIncompleteCondition = true;
       unclosedParens++;
@@ -375,8 +386,12 @@
   // Fill the final parens with a throw because if we fell through all of the
   // cases then the value we had didn't match any of the types in the union.
   if (hasIncompleteCondition) {
+    if (allowsNull) {
+      buffer.write('$valueCode == null ? null : (');
+      unclosedParens++;
+    }
     buffer.write(
-        "throw '''\${$valueCode} was not one of (${types.join(', ')})'''");
+        "throw '''\${$valueCode} was not one of (${union.types.map((t) => t.dartTypeWithTypeArgs).join(', ')})'''");
   }
   buffer.write(')' * unclosedParens);
 }
@@ -384,31 +399,48 @@
 void _writeFromJsonConstructor(
     IndentableStringBuffer buffer, Interface interface) {
   final allFields = _getAllFields(interface);
-  if (allFields.isEmpty) {
-    return;
-  }
   buffer
-    ..writeIndentedln(
-        'factory ${_stripTypeArgs(interface.name)}.fromJson(Map<String, dynamic> json) {')
+    ..writeIndentedln('static ${interface.nameWithTypeArgs} '
+        'fromJson${interface.typeArgsString}(Map<String, dynamic> json) {')
     ..indent();
   for (final field in allFields) {
     buffer.writeIndented('final ${field.name} = ');
-    _writeFromJsonCode(buffer, field.types, "json['${field.name}']");
+    _writeFromJsonCode(buffer, field.type, "json['${field.name}']",
+        allowsNull: field.allowsNull || field.allowsUndefined);
     buffer.writeln(';');
   }
   buffer
-    ..writeIndented('return new ${interface.name}(')
+    ..writeIndented('return new ${interface.nameWithTypeArgs}(')
     ..write(allFields.map((field) => '${field.name}').join(', '))
     ..writeln(');')
     ..outdent()
     ..writeIndented('}');
 }
 
+void _writeHashCode(IndentableStringBuffer buffer, Interface interface) {
+  buffer
+    ..writeIndentedln('@override')
+    ..writeIndentedln('int get hashCode {')
+    ..indent()
+    ..writeIndented('int hash = 0;');
+  for (var field in _getAllFields(interface)) {
+    buffer
+        .write('hash = JenkinsSmiHash.combine(hash, ${field.name}.hashCode);');
+  }
+  buffer
+    ..writeln('return JenkinsSmiHash.finish(hash);')
+    ..outdent()
+    ..writeIndentedln('}');
+}
+
 void _writeInterface(IndentableStringBuffer buffer, Interface interface) {
   _writeDocCommentsAndAnnotations(buffer, interface);
 
-  buffer.writeIndented('class ${interface.name} ');
-  var allBaseTypes = interface.baseTypes.followedBy(['ToJsonable']);
+  buffer.writeIndented('class ${interface.nameWithTypeArgs} ');
+  final allBaseTypes =
+      interface.baseTypes.map((t) => t.dartTypeWithTypeArgs).toList();
+  allBaseTypes.addAll(getSpecialBaseTypes(interface));
+  allBaseTypes.add('ToJsonable');
   if (allBaseTypes.isNotEmpty) {
     buffer.writeIndented('implements ${allBaseTypes.join(', ')} ');
   }
@@ -428,6 +460,9 @@
   buffer.writeln();
   _writeToJsonMethod(buffer, interface);
   _writeCanParseMethod(buffer, interface);
+  _writeEquals(buffer, interface);
+  _writeHashCode(buffer, interface);
+  _writeToString(buffer, interface);
   buffer
     ..outdent()
     ..writeIndentedln('}')
@@ -440,14 +475,10 @@
   // undefined and never explicitly null), we'll only add the value if set.
   if (field.allowsUndefined) {
     buffer
-      ..writeIndentedlnIf(
-          field.isDeprecated, '// ignore: deprecated_member_use')
       ..writeIndentedln('if (${field.name} != null) {')
       ..indent();
   }
-  buffer
-    ..writeIndentedlnIf(field.isDeprecated, '// ignore: deprecated_member_use')
-    ..writeIndented('''$mapName['${field.name}'] = ${field.name}''');
+  buffer..writeIndented('''$mapName['${field.name}'] = ${field.name}''');
   if (!field.allowsUndefined && !field.allowsNull) {
     buffer.write(''' ?? (throw '${field.name} is required but was not set')''');
   }
@@ -473,29 +504,6 @@
   _getSorted(members).forEach((m) => _writeMember(buffer, m));
 }
 
-void _writeNamespace(IndentableStringBuffer buffer, Namespace namespace) {
-  // Namespaces are just groups of constants. For some uses we can write these
-  // as enum classes for extra type safety, but not for all - for example
-  // CodeActionKind can be an arbitrary String even though it also defines
-  // constants for common values. We can tell which can have their own values
-  // because they're marked with type aliases, with the exception of ErrorCodes!
-  if (!_typeAliases.containsKey(namespace.name) &&
-      namespace.name != 'ErrorCodes') {
-    _writeEnumClass(buffer, namespace);
-    return;
-  }
-
-  _writeDocCommentsAndAnnotations(buffer, namespace);
-  buffer
-    ..writeln('abstract class ${namespace.name} {')
-    ..indent();
-  _writeMembers(buffer, namespace.members);
-  buffer
-    ..outdent()
-    ..writeln('}')
-    ..writeln();
-}
-
 void _writeToJsonMethod(IndentableStringBuffer buffer, Interface interface) {
   // It's important the name we use for the map here isn't in use in the object
   // already. 'result' was, so we prefix it with some underscores.
@@ -512,11 +520,17 @@
     ..writeIndentedln('}');
 }
 
-void _writeType(IndentableStringBuffer buffer, ApiItem type) {
+void _writeToString(IndentableStringBuffer buffer, Interface interface) {
+  buffer
+    ..writeIndentedln('@override')
+    ..writeIndentedln('String toString() => jsonEncoder.convert(toJson());');
+}
+
+void _writeType(IndentableStringBuffer buffer, AstNode type) {
   if (type is Interface) {
     _writeInterface(buffer, type);
   } else if (type is Namespace) {
-    _writeNamespace(buffer, type);
+    _writeEnumClass(buffer, type);
   } else if (type is TypeAlias) {
     // For now type aliases are not supported, so are collected at the start
     // of the process in a map, and just replaced with the aliased type during
@@ -528,38 +542,51 @@
 }
 
 void _writeTypeCheckCondition(
-    IndentableStringBuffer buffer, String valueCode, String dartType) {
-  if (dartType == 'dynamic') {
+    IndentableStringBuffer buffer, String valueCode, TypeBase type) {
+  type = resolveTypeAlias(type, resolveEnumClasses: true);
+
+  final resolvedDartType = type.dartTypeWithTypeArgs;
+  if (resolvedDartType == 'dynamic') {
     buffer.write('true');
-  } else if (_isLiteral(dartType)) {
-    buffer.write('$valueCode is $dartType');
-  } else if (_isSpecType(dartType)) {
-    buffer.write('$dartType.canParse($valueCode)');
-  } else if (_isList(dartType)) {
-    final listType = _getListType(dartType);
+  } else if (_isSimpleType(type)) {
+    buffer.write('$valueCode is $resolvedDartType');
+  } else if (_isSpecType(type)) {
+    buffer.write('$resolvedDartType.canParse($valueCode)');
+  } else if (type is ArrayType) {
     buffer.write('($valueCode is List');
-    if (dartType != 'dynamic') {
+    if (resolvedDartType != 'dynamic') {
       // TODO(dantup): If we're happy to assume we never have two lists in a union
       // we could skip this bit.
       buffer
           .write(' && ($valueCode.length == 0 || $valueCode.every((item) => ');
-      _writeTypeCheckCondition(buffer, 'item', listType);
+      _writeTypeCheckCondition(buffer, 'item', type.elementType);
       buffer.write('))');
     }
     buffer.write(')');
-  } else if (_isUnion(dartType)) {
+  } else if (type is MapType) {
+    buffer.write('($valueCode is Map');
+    if (resolvedDartType != 'dynamic') {
+      buffer
+        ..write(' && ($valueCode.length == 0 || (')
+        ..write('$valueCode.keys.every((item) => ');
+      _writeTypeCheckCondition(buffer, 'item', type.indexType);
+      buffer..write('&& $valueCode.values.every((item) => ');
+      _writeTypeCheckCondition(buffer, 'item', type.valueType);
+      buffer.write(')))');
+    }
+    buffer.write(')');
+  } else if (type is UnionType) {
     // To type check a union, we just recursively check against each of its types.
-    final unionTypes = _getUnionTypes(dartType);
     buffer.write('(');
-    for (var i = 0; i < unionTypes.length; i++) {
+    for (var i = 0; i < type.types.length; i++) {
       if (i != 0) {
         buffer.write(' || ');
       }
-      _writeTypeCheckCondition(buffer, valueCode, mapType([unionTypes[i]]));
+      _writeTypeCheckCondition(buffer, valueCode, type.types[i]);
     }
     buffer.write(')');
   } else {
-    throw 'Unable to type check $valueCode against $dartType';
+    throw 'Unable to type check $valueCode against $resolvedDartType';
   }
 }
 
@@ -582,10 +609,4 @@
     write(_indentString);
     writeln(obj);
   }
-
-  void writeIndentedlnIf(bool condition, Object obj) {
-    if (condition) {
-      writeIndentedln(obj);
-    }
-  }
 }
diff --git a/pkg/analysis_server/tool/lsp_spec/generate_all.dart b/pkg/analysis_server/tool/lsp_spec/generate_all.dart
index caa6aea..8e93a31 100644
--- a/pkg/analysis_server/tool/lsp_spec/generate_all.dart
+++ b/pkg/analysis_server/tool/lsp_spec/generate_all.dart
@@ -11,6 +11,7 @@
 import 'codegen_dart.dart';
 import 'markdown.dart';
 import 'typescript.dart';
+import 'typescript_parser.dart';
 
 main() async {
   final String script = Platform.script.toFilePath();
@@ -20,14 +21,48 @@
   new Directory(outFolder).createSync();
 
   final String spec = await fetchSpec();
-  final List<ApiItem> types = extractAllTypes(extractTypeScriptBlocks(spec));
-  types.addAll(_getSpecialCaseTypes());
+  final List<AstNode> types = extractTypeScriptBlocks(spec)
+      .where(shouldIncludeScriptBlock)
+      .map(parseFile)
+      .expand((f) => f)
+      .where(includeTypeDefinitionInOutput)
+      .toList();
+
+  // Generate an enum for all of the request methods to avoid strings.
+  types.add(extractMethodsEnum(spec));
+
   final String output = generateDartForTypes(types);
 
   new File(path.join(outFolder, 'protocol_generated.dart'))
       .writeAsStringSync(_generatedFileHeader + output);
 }
 
+Namespace extractMethodsEnum(String spec) {
+  Const toConstant(String value) {
+    final comment = new Comment(
+        new Token(TokenType.COMMENT, '''Constant for the '$value' method.'''));
+
+    // Generate a safe name for the member from the string. Those that start with
+    // $/ will have the prefix removed and all slashes should be replaced with
+    // underscores.
+    final safeMemberName = value.replaceAll(r'$/', '').replaceAll('/', '_');
+
+    return new Const(
+      comment,
+      new Token.identifier(safeMemberName),
+      new Type.identifier('string'),
+      new Token(TokenType.STRING, "'$value'"),
+    );
+  }
+
+  final comment = new Comment(new Token(TokenType.COMMENT,
+      'Valid LSP methods known at the time of code generation from the spec.'));
+  final methodConstants = extractMethodNames(spec).map(toConstant).toList();
+
+  return new Namespace(
+      comment, new Token.identifier('Method'), methodConstants);
+}
+
 const _generatedFileHeader = '''
 // Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
@@ -37,9 +72,17 @@
 // To regenerate the file, use the script
 // "pkg/analysis_server/tool/lsp_spec/generate_all.dart".
 
+// ignore_for_file: deprecated_member_use
+// ignore_for_file: unnecessary_brace_in_string_interps
+
 import 'dart:core' hide deprecated;
 import 'dart:core' as core show deprecated;
+import 'dart:convert' show JsonEncoder;
 import 'package:analysis_server/lsp_protocol/protocol_special.dart';
+import 'package:analysis_server/src/protocol/protocol_internal.dart' show listEqual, mapEqual;
+import 'package:analyzer/src/generated/utilities_general.dart';
+
+const jsonEncoder = const JsonEncoder.withIndent('    ');
 
 ''';
 
@@ -51,16 +94,18 @@
   return resp.body;
 }
 
-/// Fabricates types for things that don't parse well from the TS spec,
-/// such as anonymous types:
-///     type MarkedString = string | { language: string; value: string };
-List<ApiItem> _getSpecialCaseTypes() {
-  return [
-    // For MarkedString, we drop the string-only version since we can always
-    // supply a language and it makes the type a little simpler.
-    new Interface('MarkedString', null, [], [
-      new Field('language', null, ['string'], false, false),
-      new Field('value', null, ['string'], false, false)
-    ])
-  ];
+/// Returns whether a script block should be parsed or not.
+bool shouldIncludeScriptBlock(String input) {
+  // We can't parse literal arrays, but this script block is just an example
+  // and not actually referenced anywhere.
+  if (input.trim() == r"export const EOL: string[] = ['\n', '\r\n', '\r'];") {
+    return false;
+  }
+
+  // There are some code blocks that just have example JSON in them.
+  if (input.startsWith('{') && input.endsWith('}')) {
+    return false;
+  }
+
+  return true;
 }
diff --git a/pkg/analysis_server/tool/lsp_spec/markdown.dart b/pkg/analysis_server/tool/lsp_spec/markdown.dart
index ae99df1..bf93adc 100644
--- a/pkg/analysis_server/tool/lsp_spec/markdown.dart
+++ b/pkg/analysis_server/tool/lsp_spec/markdown.dart
@@ -4,6 +4,9 @@
 
 final _typeScriptBlockPattern =
     new RegExp(r'\B```typescript([\S\s]*?)\n```', multiLine: true);
+final _methodNamesPattern = new RegExp(
+    r'''_(?:Notification|Request):?_:?\r?\n\* method: '(.*?)'\r?\n''',
+    multiLine: true);
 
 /// Extracts fenced code blocks that are explicitly marked as TypeScript from a
 /// markdown document.
@@ -13,3 +16,10 @@
       .map((m) => m.group(1).trim())
       .toList();
 }
+
+List<String> extractMethodNames(String spec) {
+  return _methodNamesPattern
+      .allMatches(spec)
+      .map((m) => m.group(1).trim())
+      .toList();
+}
diff --git a/pkg/analysis_server/tool/lsp_spec/typescript.dart b/pkg/analysis_server/tool/lsp_spec/typescript.dart
index 017c666..dd6e854 100644
--- a/pkg/analysis_server/tool/lsp_spec/typescript.dart
+++ b/pkg/analysis_server/tool/lsp_spec/typescript.dart
@@ -2,26 +2,20 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-// TODO(dantup): Regex seemed like a good choice when parsing the first few...
-// maybe it's not so great now. We should parse this properly if it turns out
-// there are issues with what we have here.
-const String _blockBody = r'\{([\s\S]*?)\s*\n\s*\}';
-const String _comment = r'(?:\/\*\*((?:[\S\s](?!\*\/))+?)\s\*\/)?\s*';
+import 'typescript_parser.dart';
 
-List<ApiItem> extractAllTypes(List<String> code) {
-  return extractTypes(code.join('\n'));
-}
-
-List<ApiItem> extractTypes(String code) {
-  final types = ApiItem.extractFrom(code);
-  _removeUnwantedTypes(types);
-  return types;
-}
-
-String _cleanComment(String comment) {
+String cleanComment(String comment) {
   if (comment == null) {
     return null;
   }
+
+  // Remove the start/end comment markers.
+  if (comment.startsWith('/**') && comment.endsWith('*/')) {
+    comment = comment.substring(3, comment.length - 2);
+  } else if (comment.startsWith('//')) {
+    comment = comment.substring(2);
+  }
+
   final _commentLinePrefixes = new RegExp(r'\n\s*\* ?');
   final _nonConcurrentNewlines = new RegExp(r'\n(?![\n\s\-*])');
   final _newLinesThatRequireReinserting = new RegExp(r'\n (\w)');
@@ -41,10 +35,11 @@
 /// Fixes up some enum types that are not as specific as they could be in the
 /// spec. For example, Diagnostic.severity is typed "number" but can be mapped
 /// to the DiagnosticSeverity enum class.
-String _getImprovedType(String interfaceName, String fieldName) {
+String getImprovedType(String interfaceName, String fieldName) {
   const Map<String, Map<String, String>> _improvedTypeMappings = {
     "Diagnostic": {
       "severity": "DiagnosticSeverity",
+      "code": "String",
     },
     "TextDocumentSyncOptions": {
       "change": "TextDocumentSyncKind",
@@ -61,6 +56,20 @@
     "FoldingRange": {
       "kind": "FoldingRangeKind",
     },
+    "ResponseError": {
+      "code": "ErrorCodes",
+    },
+    "NotificationMessage": {
+      "method": "Method",
+      "params": "object",
+    },
+    "RequestMessage": {
+      "method": "Method",
+      "params": "object",
+    },
+    "SymbolInformation": {
+      "kind": "SymbolKind",
+    },
   };
 
   final interface = _improvedTypeMappings[interfaceName];
@@ -68,246 +77,38 @@
   return interface != null ? interface[fieldName] : null;
 }
 
-List<String> _getSpecialBaseClasses(String name) {
-  const fileOperationTypes = [
-    'TextDocumentEdit',
-    'CreateFile',
-    'RenameFile',
-    'DeleteFile'
-  ];
-  if (fileOperationTypes.contains(name)) {
-    return ['FileOperation'];
+List<String> getSpecialBaseTypes(Interface interface) {
+  if (interface.name == 'RequestMessage' ||
+      interface.name == 'NotificationMessage') {
+    return ['IncomingMessage'];
   } else {
     return [];
   }
 }
 
-List<String> _parseTypes(String baseTypes, String sep) {
-  // Special case for a single complicated type we can't parse easily...
-  if (baseTypes ==
-      '(TextDocumentEdit[] | (TextDocumentEdit | CreateFile | RenameFile | DeleteFile)[])') {
-    return ['FileOperation[]'];
-  }
-  return baseTypes?.split(sep)?.map((t) => t.trim())?.toList() ?? [];
-}
-
-/// Removes types that are in the spec that we don't want.
-void _removeUnwantedTypes(List<ApiItem> types) {
+/// Removes types that are in the spec that we don't want to emit.
+bool includeTypeDefinitionInOutput(AstNode node) {
   // These types are not used for v3.0 (Feb 2017) and by dropping them we don't
   // have to handle any cases where both a namespace and interfaces are declared
   // with the same name.
-  types.removeWhere((item) => item.name == 'InitializeError');
+  return node.name != 'InitializeError' &&
+      // We don't emit MarkedString because it gets mapped to a simple String
+      // when getting the .dartType for it.
+      // .startsWith() because there are inline types that will be generated.
+      !node.name.startsWith('MarkedString');
 }
 
-/// Base class for Interface, Field, Constant, etc. parsed from the LSP spec.
-abstract class ApiItem {
-  String name, comment;
-  bool isDeprecated;
-  ApiItem(this.name, String comment)
-      : comment = _cleanComment(comment),
-        isDeprecated = comment?.contains('@deprecated') ?? false;
-
-  static List<ApiItem> extractFrom(String code) {
-    List<ApiItem> types = [];
-    types.addAll(Interface.extractFrom(code));
-    types.addAll(Namespace.extractFrom(code));
-    types.addAll(TypeAlias.extractFrom(code));
-    return types;
+/// Removes types that are in the spec that we don't want in other signatures.
+bool allowTypeInSignatures(TypeBase type) {
+  // Don't allow arrays of MarkedStrings, but do allow simple MarkedStrings.
+  // The only place that uses these are Hovers and we only send one value
+  // (to match the MarkupString equiv) so the array just makes the types
+  // unnecessarily complicated.
+  if (type is ArrayType) {
+    final elementType = type.elementType;
+    if (elementType is Type && elementType.name == 'MarkedString') {
+      return false;
+    }
   }
-}
-
-/// A Constant parsed from the LSP spec.
-class Const extends Member {
-  final String type, value;
-  Const(String name, String comment, this.type, this.value)
-      : super(name, comment);
-
-  static List<Const> extractFrom(String code) {
-    final RegExp _constPattern = new RegExp(_comment +
-        r'''(?:export\s+)?const\s+(\w+)(?::\s+([\w\[\]'".-]+?))?\s*=\s*([\w\[\]'".-]+)\s*(?:;|$)''');
-
-    final consts = _constPattern.allMatches(code).map((m) {
-      final String comment = m.group(1);
-      final String name = m.group(2);
-      final String type = m.group(3);
-      final String value = m.group(4);
-      return new Const(name, comment, type, value);
-    }).toList();
-    return consts;
-  }
-
-  static List<Const> extractFromEnumValue(String code) {
-    final RegExp _constPattern =
-        new RegExp(_comment + r'''(\w+)\s*=\s*([\w\[\]'".-]+)\s*(?:,|$)''');
-
-    final consts = _constPattern.allMatches(code).map((m) {
-      final String comment = m.group(1);
-      final String name = m.group(2);
-      final String value = m.group(3);
-      return new Const(name, comment, null, value);
-    }).toList();
-    return consts;
-  }
-}
-
-/// A Field for an Interface parsed from the LSP spec.
-class Field extends Member {
-  final List<String> types;
-  final bool allowsNull, allowsUndefined;
-  Field(String name, String comment, this.types, this.allowsNull,
-      this.allowsUndefined)
-      : super(name, comment);
-
-  static List<Field> extractFrom(String interfaceName, String code) {
-    final RegExp _fieldPattern = new RegExp(_comment +
-        r'([\w\[\]]+\??)\s*:\s*([\w\[\] \|\{\}\(\)<>:;]+)\s*(?:;|$)');
-
-    final fields = _fieldPattern.allMatches(code).where((m) {
-      // Skip over the indexer in FormattingOptions since we don't need this
-      // (for now) and it's complicated to represent.
-      if (m.group(0).contains('[key: string]: boolean | number | string;')) {
-        return false;
-      }
-      return true;
-    }).map((m) {
-      String comment = m.group(1);
-      String name = m.group(2);
-      String typesString = m.group(3).trim();
-      // Our regex may result in semicolons on the end...
-      // TODO(dantup): Fix this, or make a simple parser.
-      if (typesString.endsWith(';')) {
-        typesString = typesString.substring(0, typesString.length - 1);
-      }
-      // Some fields have weird comments like this in the spec:
-      //     {@link MessageType}
-      // These seem to be the correct type of the field, while the field is
-      // marked with number.
-      if (comment != null) {
-        final RegExp _linkTypePattern = new RegExp(r'See \{@link (\w+)\}\.?');
-        final linkTypeMatch = _linkTypePattern.firstMatch(comment);
-        if (linkTypeMatch != null) {
-          typesString = linkTypeMatch.group(1);
-          comment = comment.replaceAll(_linkTypePattern, '');
-        }
-      }
-      List<String> types = _parseTypes(typesString, '|');
-      final bool allowsNull = types.contains('null');
-      if (allowsNull) {
-        types.remove('null');
-      }
-      final bool allowsUndefined = name.endsWith('?');
-      if (allowsUndefined) {
-        name = name.substring(0, name.length - 1);
-      }
-      // Perform simple type improvements for enums values that are typed as
-      // num/string in the spec but are enums.
-      // the spec.
-      if (types.length == 1) {
-        types[0] = _getImprovedType(interfaceName, name) ?? types[0];
-      }
-      return new Field(name, comment, types, allowsNull, allowsUndefined);
-    }).toList();
-    return fields;
-  }
-}
-
-/// An Interface parsed from the LSP spec.
-class Interface extends ApiItem {
-  final List<String> baseTypes;
-  final List<Member> members;
-  Interface(String name, String comment, this.baseTypes, this.members)
-      : super(name, comment);
-
-  static List<Interface> extractFrom(String code) {
-    final RegExp _interfacePattern = new RegExp(_comment +
-        r'(?:export\s+)?(?:interface|class)\s+([\w<>]+)(?:\s+extends\s+([\w, ]+?))?\s*' +
-        _blockBody);
-
-    final interfaces = _interfacePattern.allMatches(code).map((match) {
-      final String comment = match.group(1);
-      final String name = match.group(2);
-      final List<String> baseTypes = _parseTypes(match.group(3), ',');
-      final String body = match.group(4);
-      final List<Member> members = Member.extractFrom(name, body);
-
-      // Add any special base classes we've added to simplify types.
-      baseTypes.addAll(_getSpecialBaseClasses(name));
-
-      return new Interface(name, comment, baseTypes, members);
-    }).toList();
-    return interfaces;
-  }
-}
-
-/// A Field or Constant parsed from the LSP type.
-abstract class Member extends ApiItem {
-  Member(String name, String comment) : super(name, comment);
-
-  static List<Member> extractFrom(String interfaceName, String code) {
-    List<Member> members = [];
-    members.addAll(Field.extractFrom(interfaceName, code));
-    members.addAll(Const.extractFrom(code));
-    return members;
-  }
-}
-
-/// An Enum or Namsepace containing constants parsed from the LSP spec.
-class Namespace extends ApiItem {
-  final List<Member> members;
-  Namespace(String name, String comment, this.members) : super(name, comment);
-
-  static List<Namespace> extractFrom(String code) {
-    final enums = <Namespace>[];
-    enums.addAll(_extractNamespacesFrom(code));
-    enums.addAll(_extractEnumsFrom(code));
-    return enums;
-  }
-
-  static List<Namespace> _extractEnumsFrom(String code) {
-    final RegExp _namespacePattern =
-        new RegExp(_comment + r'(?:export\s+)?enum\s+(\w+)\s*' + _blockBody);
-
-    final namespaces = _namespacePattern.allMatches(code).map((match) {
-      final String comment = match.group(1);
-      final String name = match.group(2);
-      final String body = match.group(3);
-
-      final List<Member> members = Const.extractFromEnumValue(body);
-      return new Namespace(name, comment, members);
-    }).toList();
-    return namespaces;
-  }
-
-  static List<Namespace> _extractNamespacesFrom(String code) {
-    final RegExp _namespacePattern = new RegExp(
-        _comment + r'(?:export\s+)?namespace\s+(\w+)\s*' + _blockBody);
-
-    final namespaces = _namespacePattern.allMatches(code).map((match) {
-      final String comment = match.group(1);
-      final String name = match.group(2);
-      final String body = match.group(3);
-      final List<Member> members = Member.extractFrom(name, body);
-      return new Namespace(name, comment, members);
-    }).toList();
-    return namespaces;
-  }
-}
-
-/// A type alias parsed from the LSP spec.
-class TypeAlias extends ApiItem {
-  final String baseType;
-  TypeAlias(name, comment, this.baseType) : super(name, comment);
-
-  static List<TypeAlias> extractFrom(String code) {
-    final RegExp _typeAliasPattern =
-        new RegExp(_comment + r'type\s+([\w]+)\s+=\s+([\w\[\]]+)\s*;');
-
-    final typeAliases = _typeAliasPattern.allMatches(code).map((match) {
-      final String comment = match.group(1);
-      final String name = match.group(2);
-      final String baseType = match.group(3);
-      return new TypeAlias(name, comment, baseType);
-    }).toList();
-    return typeAliases;
-  }
+  return true;
 }
diff --git a/pkg/analysis_server/tool/lsp_spec/typescript_parser.dart b/pkg/analysis_server/tool/lsp_spec/typescript_parser.dart
new file mode 100644
index 0000000..5a6a844
--- /dev/null
+++ b/pkg/analysis_server/tool/lsp_spec/typescript_parser.dart
@@ -0,0 +1,910 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:math';
+
+import 'package:analysis_server/src/services/correction/strings.dart'
+    show capitalize;
+
+import 'codegen_dart.dart';
+import 'typescript.dart';
+
+final _validIdentifierCharacters = RegExp('[a-zA-Z0-9_]');
+
+bool isNullType(TypeBase t) => t is Type && t.name == 'null';
+
+bool isUndefinedType(TypeBase t) => t is Type && t.name == 'undefined';
+
+/// A fabricated field name for indexers in case they result in generation
+/// of type names for inline types.
+const fieldNameForIndexer = 'indexer';
+
+List<AstNode> parseFile(String input) {
+  final scanner = new Scanner(input);
+  final tokens = scanner.scan();
+  final parser = new Parser(tokens);
+  return parser.parse();
+}
+
+TypeBase typeOfLiteral(TokenType tokenType) {
+  final typeName = tokenType == TokenType.STRING
+      ? 'string'
+      : tokenType == TokenType.NUMBER
+          ? 'number'
+          : throw 'Unknown literal type $tokenType';
+  return new Type.identifier(typeName);
+}
+
+class ArrayType extends TypeBase {
+  final TypeBase elementType;
+
+  ArrayType(this.elementType);
+
+  @override
+  String get dartType => 'List';
+  @override
+  String get typeArgsString => '<${elementType.dartTypeWithTypeArgs}>';
+}
+
+class MapType extends TypeBase {
+  final TypeBase indexType;
+  final TypeBase valueType;
+
+  MapType(this.indexType, this.valueType);
+
+  @override
+  String get dartType => 'Map';
+  @override
+  String get typeArgsString =>
+      '<${indexType.dartTypeWithTypeArgs}, ${valueType.dartTypeWithTypeArgs}>';
+}
+
+class AstNode {
+  final Comment commentNode;
+  final bool isDeprecated;
+  AstNode(this.commentNode)
+      : isDeprecated = commentNode?.text?.contains('@deprecated') ?? false;
+  String get commentText => commentNode?.text;
+
+  String get name => null;
+}
+
+class Comment extends AstNode {
+  final Token token;
+  final String text;
+
+  Comment(this.token)
+      : text = cleanComment(token.lexeme),
+        super(null);
+}
+
+class Const extends Member {
+  Token nameToken;
+  TypeBase type;
+  Token valueToken;
+  Const(Comment comment, this.nameToken, this.type, this.valueToken)
+      : super(comment);
+  String get name => nameToken.lexeme;
+
+  String get valueAsLiteral {
+    if (type.dartType == 'String') {
+      // Write strings as raw strings, since some have dollars in them (eg. for
+      // LSP method names). valueToken.lexeme already includes the quotes as
+      // read from the spec.
+      return 'r${valueToken.lexeme}';
+    } else {
+      return valueToken.lexeme;
+    }
+  }
+}
+
+class Field extends Member {
+  final Token nameToken;
+  final TypeBase type;
+  final bool allowsNull;
+  final bool allowsUndefined;
+  Field(
+    Comment comment,
+    this.nameToken,
+    this.type,
+    this.allowsNull,
+    this.allowsUndefined,
+  ) : super(comment);
+
+  String get name => nameToken.lexeme;
+}
+
+class FixedValueField extends Field {
+  final Token valueToken;
+  FixedValueField(
+    Comment comment,
+    Token nameToken,
+    this.valueToken,
+    TypeBase type,
+    bool allowsNull,
+    bool allowsUndefined,
+  ) : super(comment, nameToken, type, allowsNull, allowsUndefined);
+}
+
+class InlineInterface extends Interface {
+  InlineInterface(
+    String name,
+    List<Member> members,
+  ) : super(null, new Token.identifier(name), [], [], members);
+}
+
+class Indexer extends Member {
+  final TypeBase indexType;
+  final TypeBase valueType;
+  Indexer(
+    Comment comment,
+    this.indexType,
+    this.valueType,
+  ) : super(comment);
+
+  String get name => fieldNameForIndexer;
+}
+
+class Interface extends AstNode {
+  final Token nameToken;
+  final List<Token> typeArgs;
+  final List<TypeBase> baseTypes;
+  final List<Member> members;
+
+  Interface(
+    Comment comment,
+    this.nameToken,
+    this.typeArgs,
+    this.baseTypes,
+    this.members,
+  ) : super(comment);
+  String get name => nameToken.lexeme;
+  String get nameWithTypeArgs => '$name$typeArgsString';
+
+  String get typeArgsString => typeArgs.isNotEmpty
+      ? '<${typeArgs.map((t) => t.lexeme).join(', ')}>'
+      : '';
+}
+
+class Member extends AstNode {
+  Member(Comment comment) : super(comment);
+}
+
+class Namespace extends AstNode {
+  final Token nameToken;
+  final List<Member> members;
+  Namespace(
+    Comment comment,
+    this.nameToken,
+    this.members,
+  ) : super(comment);
+
+  String get name => nameToken.lexeme;
+}
+
+class Parser {
+  final List<Token> _tokens;
+  int _current = 0;
+  List<AstNode> _nodes;
+  Parser(this._tokens);
+
+  bool get _isAtEnd => _peek().type == TokenType.EOF;
+
+  List<AstNode> parse() {
+    if (_nodes == null) {
+      _nodes = <AstNode>[];
+      while (!_isAtEnd) {
+        _nodes.add(_topLevel());
+      }
+    }
+    return _nodes;
+  }
+
+  /// Returns the current token and moves to the next.
+  Token _advance() => _tokenAt(_current++);
+
+  /// Checks if the next token is [type] without advancing.
+  bool _check(TokenType type) => !_isAtEnd && _peek().type == type;
+
+  Comment _comment() {
+    if (_peek().type != TokenType.COMMENT) {
+      return null;
+    }
+    return Comment(_advance());
+  }
+
+  Const _const(String containerName, Comment leadingComment) {
+    _eatUnwantedKeywords();
+    final name = _consume(TokenType.IDENTIFIER, 'Expected identifier');
+    TypeBase type;
+    if (_match([TokenType.COLON])) {
+      type = _type(containerName, name.lexeme);
+    }
+    final value = _match([TokenType.EQUAL]) ? _advance() : null;
+
+    if (type == null && value != null) {
+      type = typeOfLiteral(value.type);
+    }
+
+    _consume(TokenType.SEMI_COLON, 'Expected ;');
+    return Const(leadingComment, name, type, value);
+  }
+
+  Indexer _indexer(String containerName, Comment leadingComment) {
+    final indexer = _field(containerName, leadingComment);
+    _consume(TokenType.RIGHT_BRACKET, 'Expected ]');
+    _consume(TokenType.COLON, 'Expected :');
+
+    TypeBase type;
+    type = _type(containerName, fieldNameForIndexer, improveTypes: true);
+
+    //_consume(TokenType.RIGHT_BRACE, 'Expected }');
+    _match([TokenType.SEMI_COLON]);
+
+    return new Indexer(leadingComment, indexer.type, type);
+  }
+
+  /// Ensures the next token is [type] and moves to the next, throwing [message]
+  /// if not.
+  Token _consume(TokenType type, String message) {
+    if (_check(type)) {
+      return _advance();
+    }
+
+    throw '$message\n\n${_peek()}';
+  }
+
+  void _eatUnwantedKeywords() {
+    _match([TokenType.EXPORT_KEYWORD]);
+    _match([TokenType.READONLY_KEYWORD]);
+  }
+
+  Namespace _enum(Comment leadingComment) {
+    final name = _consume(TokenType.IDENTIFIER, 'Expected identifier');
+    _consume(TokenType.LEFT_BRACE, 'Expected {');
+    final consts = <Const>[];
+    while (!_check(TokenType.RIGHT_BRACE)) {
+      consts.add(_enumValue(name.lexeme));
+      // Commas might not be present (eg. for last one).
+      _match([TokenType.COMMA]);
+    }
+    _consume(TokenType.RIGHT_BRACE, 'Expected }');
+
+    return new Namespace(leadingComment, name, consts);
+  }
+
+  Const _enumValue(String enumName) {
+    final leadingComment = _comment();
+    _eatUnwantedKeywords();
+    final name = _consume(TokenType.IDENTIFIER, 'Expected identifier');
+    TypeBase type;
+    if (_match([TokenType.COLON])) {
+      type = _type(enumName, name.lexeme);
+    }
+    final value = _match([TokenType.EQUAL]) ? _advance() : null;
+
+    if (type == null && value != null) {
+      type = typeOfLiteral(value.type);
+    }
+    return Const(leadingComment, name, type, value);
+  }
+
+  String _joinNames(String parent, String child) {
+    return '$parent${capitalize(child)}';
+  }
+
+  Field _field(String containerName, Comment leadingComment) {
+    _eatUnwantedKeywords();
+    final name = _consume(TokenType.IDENTIFIER, 'Expected identifier');
+    var canBeUndefined = _match([TokenType.QUESTION]);
+    var canBeNull = false;
+    _consume(TokenType.COLON, 'Expected :');
+    TypeBase type;
+    Token value;
+    type = _type(containerName, name.lexeme,
+        includeUndefined: canBeUndefined, improveTypes: true);
+
+    // Some fields have weird comments like this in the spec:
+    //     {@link MessageType}
+    // These seem to be the correct type of the field, while the field is
+    // marked with number.
+    final commentText = leadingComment?.text;
+    if (commentText != null) {
+      final RegExp _linkTypePattern = new RegExp(r'See \{@link (\w+)\}\.?');
+      final linkTypeMatch = _linkTypePattern.firstMatch(commentText);
+      if (linkTypeMatch != null) {
+        type = new Type.identifier(linkTypeMatch.group(1));
+        leadingComment = new Comment(new Token(TokenType.COMMENT,
+            '// ' + commentText.replaceAll(_linkTypePattern, '')));
+      }
+    }
+
+    // Ideally this would be _consume(), but there are no semi-colons after the
+    // "inline types" since they're blocks.
+    _match([TokenType.SEMI_COLON]);
+
+    // Special handling for fields that have fixed values.
+    if (value != null) {
+      return new FixedValueField(
+          leadingComment, name, value, type, canBeNull, canBeUndefined);
+    }
+
+    if (type is UnionType) {
+      UnionType union = type;
+      // Since undefined and null can appear in the union type list but we want to
+      // handle it specially in the code generation, we promote them to fields on
+      // the Field.
+      canBeUndefined |= union.types.any(isUndefinedType);
+      canBeNull = union.types.any(isNullType);
+      // Finally, we need to remove them from the union.
+      final remainingTypes = union.types
+          .where((t) => !isNullType(t) && !isUndefinedType(t))
+          .toList();
+
+      // We also remove any types that are deprecated and/or we won't use to
+      // simplify the unions.
+      remainingTypes.removeWhere((t) => !allowTypeInSignatures(t));
+
+      type = remainingTypes.length > 1
+          ? new UnionType(remainingTypes)
+          : remainingTypes.single;
+    }
+    return Field(leadingComment, name, type, canBeNull, canBeUndefined);
+  }
+
+  Interface _interface(Comment leadingComment) {
+    final name = _consume(TokenType.IDENTIFIER, 'Expected identifier');
+    final typeArgs = <Token>[];
+    if (_match([TokenType.LESS])) {
+      while (true) {
+        typeArgs.add(_consume(TokenType.IDENTIFIER, 'Expected identifier'));
+        if (_check(TokenType.GREATER)) {
+          break;
+        }
+        _consume(TokenType.COMMA, 'Expected , or >');
+      }
+      _consume(TokenType.GREATER, 'Expected >');
+    }
+    final baseTypes = <TypeBase>[];
+    if (_match([TokenType.EXTENDS_KEYWORD])) {
+      while (true) {
+        baseTypes.add(_type(name.lexeme, null));
+        if (_check(TokenType.LEFT_BRACE)) {
+          break;
+        }
+        _consume(TokenType.COMMA, 'Expected , or {');
+      }
+    }
+    _consume(TokenType.LEFT_BRACE, 'Expected {');
+    final members = <Member>[];
+    while (!_check(TokenType.RIGHT_BRACE)) {
+      members.add(_member(name.lexeme));
+    }
+
+    // TODO(dantup): Temporary hack until we handle indexers. Remove nulls, which
+    // are (currently) returned by _field() for indexers.
+    members.removeWhere((m) => m == null);
+
+    _consume(TokenType.RIGHT_BRACE, 'Expected }');
+
+    return new Interface(leadingComment, name, typeArgs, baseTypes, members);
+  }
+
+  /// Returns [true] an advances if the next token is one of [types], otherwise
+  /// returns [false].
+  bool _match(List<TokenType> types) {
+    for (final type in types) {
+      if (_check(type)) {
+        _advance();
+        return true;
+      }
+    }
+
+    return false;
+  }
+
+  Member _member(String containerName) {
+    final leadingComment = _comment();
+    _eatUnwantedKeywords();
+
+    if (_match([TokenType.CONST_KEYWORD])) {
+      return _const(containerName, leadingComment);
+    } else if (_match([TokenType.LEFT_BRACKET])) {
+      return _indexer(containerName, leadingComment);
+    } else {
+      return _field(containerName, leadingComment);
+    }
+  }
+
+  Namespace _namespace(Comment leadingComment) {
+    final name = _consume(TokenType.IDENTIFIER, 'Expected identifier');
+    _consume(TokenType.LEFT_BRACE, 'Expected {');
+    final members = <Member>[];
+    while (!_check(TokenType.RIGHT_BRACE)) {
+      members.add(_member(name.lexeme));
+    }
+    _consume(TokenType.RIGHT_BRACE, 'Expected }');
+
+    return new Namespace(leadingComment, name, members);
+  }
+
+  /// Returns the next token without advancing.
+  Token _peek() => _tokenAt(_current);
+
+  Token _tokenAt(int index) =>
+      index < _tokens.length ? _tokens[index] : Token.EOF;
+
+  AstNode _topLevel() {
+    final leadingComment = _comment();
+    _match([TokenType.EXPORT_KEYWORD]);
+
+    final token = _peek();
+    if (_match([TokenType.NAMESPACE_KEYWORD])) {
+      return _namespace(leadingComment);
+    } else if (_match([TokenType.INTERFACE_KEYWORD])) {
+      return _interface(leadingComment);
+    } else if (_match([TokenType.CLASS_KEYWORD])) {
+      // Classes are the same as interfaces in this spec.
+      return _interface(leadingComment);
+    } else if (_match([TokenType.ENUM_KEYWORD])) {
+      return _enum(leadingComment);
+    } else if (token.type == TokenType.IDENTIFIER && token.lexeme == 'type') {
+      // TODO(dantup): This is a hack... We don't have a TYPE_KEYWORD because
+      // the spec has `type` as an identifier.
+      _advance(); // Eat the 'type' keyword.
+      return _typeAlias(leadingComment);
+    } else {
+      throw 'Unexpected token ${_peek()}';
+    }
+  }
+
+  TypeBase _type(
+    String containerName,
+    String fieldName, {
+    bool includeUndefined = false,
+    bool improveTypes = false,
+  }) {
+    var types = <TypeBase>[];
+    if (includeUndefined) {
+      types.add(Type.Undefined);
+    }
+    while (true) {
+      TypeBase type;
+      if (_match([TokenType.LEFT_BRACE])) {
+        // Inline interfaces.
+        final members = <Member>[];
+        while (!_check(TokenType.RIGHT_BRACE)) {
+          members.add(_member(containerName));
+        }
+
+        // TODO(dantup): Temporary hack until we handle indexers. Remove nulls, which
+        // are (currently) returned by _field() for indexers.
+        members.removeWhere((m) => m == null);
+
+        _consume(TokenType.RIGHT_BRACE, 'Expected }');
+        // Some of the inline interfaces have trailing commas (and some do not!)
+        _match([TokenType.COMMA]);
+
+        // If we have a single member that is an indexer type, we can use a Map.
+        if (members.length == 1 && members.single is Indexer) {
+          Indexer indexer = members.single;
+          type = new MapType(indexer.indexType, indexer.valueType);
+        } else {
+          // Add a synthetic interface to the parsers list of nodes to represent this type.
+          final generatedName = _joinNames(containerName, fieldName);
+          _nodes.add(new InlineInterface(generatedName, members));
+          // Record the type as a simple type that references this interface.
+          type = new Type.identifier(generatedName);
+        }
+      } else if (_match([TokenType.LEFT_PAREN])) {
+        // Some types are in (parens), so we just parse the contents as a nested type.
+        type = _type(containerName, fieldName);
+        _consume(TokenType.RIGHT_PAREN, 'Expected )');
+      } else if (_match([TokenType.STRING])) {
+        // In TS and the spec, literal strings can be types:
+        // export const PlainText: 'plaintext' = 'plaintext';
+        // trace?: 'off' | 'messages' | 'verbose';
+        // the best we can do is use their base type (string).
+        type = Type.identifier('string');
+      } else if (_match([TokenType.NUMBER])) {
+        // In TS and the spec, literal numbers can be types:
+        // export const Invoked: 1 = 1;
+        // the best we can do is use their base type (number).
+        type = Type.identifier('number');
+      } else {
+        var typeName = _consume(TokenType.IDENTIFIER, 'Expected identifier');
+        final typeArgs = <Type>[];
+        if (_match([TokenType.LESS])) {
+          while (true) {
+            typeArgs.add(_type(containerName, fieldName));
+            if (_peek() != TokenType.COMMA) {
+              _consume(TokenType.GREATER, 'Expected >');
+              break;
+            }
+          }
+        }
+
+        type = typeName.lexeme == 'Array'
+            ? new ArrayType(typeArgs.single)
+            : new Type(typeName, typeArgs);
+      }
+      if (_match([TokenType.LEFT_BRACKET])) {
+        _consume(TokenType.RIGHT_BRACKET, 'Expected ]');
+        type = new ArrayType(type);
+      }
+      // TODO(dantup): Handle types like This & That.
+      // For now, map to any.
+      if (_match([TokenType.AMPERSAND])) {
+        while (true) {
+          // Eat as many types/ampersands as we have.
+          _type(containerName, fieldName);
+          if (!_check(TokenType.AMPERSAND)) {
+            break;
+          }
+        }
+        type = Type.Any;
+      }
+
+      types.add(type);
+
+      if (!_match([TokenType.PIPE])) {
+        break;
+      }
+    }
+
+    // Remove any duplicate types (for ex. if we map multiple types into dynamic)
+    // we don't want to end up with `dynamic | dynamic`. Key on dartType to
+    // ensure we different types that will map down to the same type.
+    final uniqueTypes = new Map.fromEntries(
+      types.map((t) => new MapEntry(t.dartTypeWithTypeArgs, t)),
+    ).values.toList();
+
+    var type = uniqueTypes.length == 1
+        ? uniqueTypes.single
+        : new UnionType(uniqueTypes);
+
+    // Handle improved type mappings for things that aren't very tight in the spec.
+    if (improveTypes) {
+      final improvedTypeName = getImprovedType(containerName, fieldName);
+      if (improvedTypeName != null) {
+        type = new Type.identifier(improvedTypeName);
+      }
+    }
+    return type;
+  }
+
+  TypeAlias _typeAlias(Comment leadingComment) {
+    final name = _consume(TokenType.IDENTIFIER, 'Expected identifier');
+    _consume(TokenType.EQUAL, 'Expected =');
+    final type = _type(name.lexeme, null);
+    _consume(TokenType.SEMI_COLON, 'Expected ;');
+
+    return new TypeAlias(leadingComment, name, type);
+  }
+}
+
+class Scanner {
+  final String _source;
+  int _startOfToken = 0;
+  int _currentPos = 0;
+  final _tokens = <Token>[];
+  Scanner(this._source);
+
+  bool get _isAtEnd => _currentPos >= _source.length;
+  bool get _isNextAtEnd => _currentPos + 1 >= _source.length;
+
+  List<Token> scan() {
+    while (!_isAtEnd) {
+      _startOfToken = _currentPos;
+      _scanToken();
+    }
+    return _tokens;
+  }
+
+  void _addToken(TokenType type) {
+    final text = _source.substring(_startOfToken, _currentPos);
+    _tokens.add(Token(type, text));
+  }
+
+  String _advance() => _currentPos < _source.length
+      ? _source[_currentPos++]
+      : throw 'Cannot advance past end of source';
+
+  void _identifier() {
+    const keywords = <String, TokenType>{
+      'class': TokenType.CLASS_KEYWORD,
+      'const': TokenType.CONST_KEYWORD,
+      'enum': TokenType.ENUM_KEYWORD,
+      'export': TokenType.EXPORT_KEYWORD,
+      'extends': TokenType.EXTENDS_KEYWORD,
+      'interface': TokenType.INTERFACE_KEYWORD,
+      'namespace': TokenType.NAMESPACE_KEYWORD,
+      'readonly': TokenType.READONLY_KEYWORD,
+    };
+    while (_isAlpha(_peek())) {
+      _advance();
+    }
+
+    final string = _source.substring(_startOfToken, _currentPos);
+    if (keywords.containsKey(string)) {
+      _addToken(keywords[string]);
+    } else {
+      _addToken(TokenType.IDENTIFIER);
+    }
+  }
+
+  bool _isAlpha(String s) => _validIdentifierCharacters.hasMatch(s);
+
+  bool _isDigit(String s) => s != null && (s.codeUnitAt(0) ^ 0x30) <= 9;
+
+  bool _match(String expected) {
+    if (_isAtEnd || _source[_currentPos] != expected) {
+      return false;
+    }
+    _currentPos++;
+    return true;
+  }
+
+  void _number() {
+    // Optionally process a negative.
+    _match('-');
+    while (_isDigit(_peek())) {
+      _advance();
+    }
+
+    // Handle fractional parts.
+    if (_peek() == '.' && _isDigit(_peekNext())) {
+      // Consume the decimal point.
+      _advance();
+
+      while (_isDigit(_peek())) {
+        _advance();
+      }
+    }
+
+    _addToken(TokenType.NUMBER);
+  }
+
+  String _peek() => _isAtEnd ? null : _source[_currentPos];
+
+  String _peekNext() => _isNextAtEnd ? null : _source[_currentPos + 1];
+
+  void _scanToken() {
+    const singleCharTokens = <String, TokenType>{
+      ',': TokenType.COMMA,
+      ';': TokenType.SEMI_COLON,
+      ':': TokenType.COLON,
+      '?': TokenType.QUESTION,
+      '.': TokenType.DOT,
+      '(': TokenType.LEFT_PAREN,
+      ')': TokenType.RIGHT_PAREN,
+      '[': TokenType.LEFT_BRACKET,
+      ']': TokenType.RIGHT_BRACKET,
+      '{': TokenType.LEFT_BRACE,
+      '}': TokenType.RIGHT_BRACE,
+      '*': TokenType.STAR,
+      '&': TokenType.AMPERSAND,
+      '=': TokenType.EQUAL,
+      '|': TokenType.PIPE,
+    };
+
+    final c = _advance();
+    if (singleCharTokens.containsKey(c)) {
+      _addToken(singleCharTokens[c]);
+      return;
+    }
+    switch (c) {
+      case '/':
+        if (_match('*')) {
+          // Block comment.
+          while (!_isAtEnd && (_peek() != '*' || _peekNext() != '/')) {
+            _advance();
+          }
+          // Eat the closing comment markers detected above.
+          if (!_isAtEnd) {
+            _advance();
+            _advance();
+          }
+          _addToken(TokenType.COMMENT);
+        } else if (_match('/')) {
+          // Single line comment.
+          while (_peek() != '\n' && !_isAtEnd) {
+            _advance();
+          }
+          _addToken(TokenType.COMMENT);
+        } else {
+          _addToken(TokenType.SLASH);
+        }
+        break;
+      case '<':
+        _addToken(_match('=') ? TokenType.LESS_EQUAL : TokenType.LESS);
+        break;
+      case '>':
+        _addToken(_match('=') ? TokenType.GREATER_EQUAL : TokenType.GREATER);
+        break;
+      case ' ':
+      case '\r':
+      case '\n':
+      case '\t':
+        // Whitespace.
+        break;
+      case '"':
+      case "'":
+        _string(c);
+        break;
+      default:
+        if (_isDigit(c) || c == '-' && _isDigit(_peek())) {
+          _number();
+        } else if (_isAlpha(c)) {
+          _identifier();
+        } else {
+          final start = max(0, _currentPos - 20);
+          final end = min(_currentPos + 20, _source.length);
+          final snippet = _source.substring(start, end);
+          throw "Unexpected character '$c'.\n\n$snippet";
+        }
+        break;
+    }
+  }
+
+  void _string(String terminator) {
+    // TODO(dantup): Handle escape sequences, inc. quotes.
+    while (!_isAtEnd && _peek() != terminator) {
+      _advance();
+
+      if (_isAtEnd) {
+        throw 'Unterminated string.';
+      }
+    }
+
+    // Skip over the closing terminator.
+    _advance();
+
+    _addToken(TokenType.STRING);
+  }
+}
+
+class Token {
+  static final Token EOF = new Token(TokenType.EOF, '');
+
+  final TokenType type;
+  final String lexeme;
+
+  Token(this.type, this.lexeme);
+
+  Token.identifier(String identifier) : this(TokenType.IDENTIFIER, identifier);
+
+  @override
+  String toString() => '${type.toString().padRight(25)} '
+      '${lexeme.padRight(10)}\n';
+}
+
+enum TokenType {
+  AMPERSAND,
+  CLASS_KEYWORD,
+  COLON,
+  COMMA,
+  COMMENT,
+  CONST_KEYWORD,
+  DOT,
+  ENUM_KEYWORD,
+  EOF,
+  EQUAL,
+  EXPORT_KEYWORD,
+  EXTENDS_KEYWORD,
+  GREATER_EQUAL,
+  GREATER,
+  IDENTIFIER,
+  INTERFACE_KEYWORD,
+  LEFT_BRACE,
+  LEFT_BRACKET,
+  LEFT_PAREN,
+  LESS_EQUAL,
+  LESS,
+  NAMESPACE_KEYWORD,
+  NUMBER,
+  PIPE,
+  QUESTION,
+  READONLY_KEYWORD,
+  RIGHT_BRACE,
+  RIGHT_BRACKET,
+  RIGHT_PAREN,
+  SEMI_COLON,
+  SLASH,
+  STAR,
+  STRING,
+}
+
+class Type extends TypeBase {
+  static final TypeBase Undefined = new Type.identifier('undefined');
+  static final TypeBase Any = new Type.identifier('any');
+  final Token nameToken;
+  final List<TypeBase> typeArgs;
+
+  Type(this.nameToken, this.typeArgs) {
+    if (this.name == 'Array' || this.name.endsWith('[]')) {
+      throw 'Type should not be used for arrays, use ArrayType instead';
+    }
+  }
+
+  Type.identifier(String identifier)
+      : this(new Token.identifier(identifier), []);
+
+  @override
+  String get dartType {
+    // Always resolve type aliases when asked for our Dart type.
+    final resolvedType = resolveTypeAlias(this);
+    if (resolvedType != this) {
+      return resolvedType.dartType;
+    }
+
+    const mapping = <String, String>{
+      'boolean': 'bool',
+      'string': 'String',
+      'number': 'num',
+      'any': 'dynamic',
+      'object': 'dynamic',
+      // Simplify MarkedString from
+      //     string | { language: string; value: string }
+      // to just String
+      'MarkedString': 'String'
+    };
+
+    final typeName = mapping[name] ?? name;
+    return typeName;
+  }
+
+  String get name => nameToken.lexeme;
+
+  @override
+  String get typeArgsString {
+    // Always resolve type aliases when asked for our Dart type.
+    final resolvedType = resolveTypeAlias(this);
+    if (resolvedType != this) {
+      return resolvedType.typeArgsString;
+    }
+
+    return typeArgs.isNotEmpty
+        ? '<${typeArgs.map((t) => t.dartTypeWithTypeArgs).join(', ')}>'
+        : '';
+  }
+}
+
+class TypeAlias extends AstNode {
+  final Token nameToken;
+  final TypeBase baseType;
+  TypeAlias(
+    Comment comment,
+    this.nameToken,
+    this.baseType,
+  ) : super(comment);
+
+  String get name => nameToken.lexeme;
+}
+
+abstract class TypeBase {
+  String get dartType;
+  String get dartTypeWithTypeArgs => '$dartType$typeArgsString';
+  String get typeArgsString;
+}
+
+class UnionType extends TypeBase {
+  final List<TypeBase> types;
+
+  UnionType(this.types);
+
+  @override
+  String get dartType {
+    if (types.length > 4) {
+      throw 'Unions of more than 4 types are not supported.';
+    }
+    return 'Either${types.length}';
+  }
+
+  @override
+  String get typeArgsString {
+    final typeArgs = types.map((t) => t.dartTypeWithTypeArgs).join(', ');
+    return '<$typeArgs>';
+  }
+}
diff --git a/pkg/analysis_server/tool/spec/to_html.dart b/pkg/analysis_server/tool/spec/to_html.dart
index a6b897b..a2c1b37 100644
--- a/pkg/analysis_server/tool/spec/to_html.dart
+++ b/pkg/analysis_server/tool/spec/to_html.dart
@@ -161,7 +161,7 @@
 /**
  * Helper methods for creating HTML elements.
  */
-abstract class HtmlMixin {
+mixin HtmlMixin {
   void anchor(String id, void callback()) {
     element('a', {'name': id}, callback);
   }
diff --git a/pkg/analyzer/CHANGELOG.md b/pkg/analyzer/CHANGELOG.md
index 1d0af63..83181c8 100644
--- a/pkg/analyzer/CHANGELOG.md
+++ b/pkg/analyzer/CHANGELOG.md
@@ -1,3 +1,17 @@
+## 0.34.0
+* Support for `declarations-casts` has been removed and the `implicit-casts`
+  option now has the combined semantics of both options. This means that users
+  that disable `implicit-casts` might now see errors that were not previously
+  being reported.
+* Minor changes to the AnalysisSession and AnalysisDriver APIs to make it easier
+  for clients to transition away from using the task model.
+* Minor changes to the linter API to make it easier for lint rules to define
+  their own lint codes.
+* Add a version of getAncestor that matches by type without a closure.
+* Add an AST structure for set literals.
+* Bug fixes: #35162, #35230, #34733, #34741, #33553, #35090, #32815, #34387,
+  #34495, #35043, #33553, #34906, #34489.
+
 ## 0.33.6+1-dev
 * Added a note to the `UriResolver` documentation alerting clients of an
   upcoming breaking change.
diff --git a/pkg/analyzer/benchmark/errors_in_all_libraries.dart b/pkg/analyzer/benchmark/errors_in_all_libraries.dart
deleted file mode 100644
index e2540fb..0000000
--- a/pkg/analyzer/benchmark/errors_in_all_libraries.dart
+++ /dev/null
@@ -1,99 +0,0 @@
-#!/usr/bin/env dart
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-/// Resolves this library and everything it transitively imports and generates
-/// errors in all of those libraries. Does this in an infinite loop, starting
-/// from scratch each time, to show how VM warm-up affects things and to make
-/// it easier to connect to this with observatory.
-import 'dart:io';
-
-import 'package:analyzer/dart/ast/standard_resolution_map.dart';
-import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/file_system/physical_file_system.dart';
-import 'package:analyzer/src/context/builder.dart';
-import 'package:analyzer/src/dart/sdk/sdk.dart';
-import 'package:analyzer/src/file_system/file_system.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer/src/generated/source_io.dart';
-import 'package:analyzer/src/source/package_map_resolver.dart';
-import 'package:analyzer/src/source/source_resource.dart';
-import 'package:path/path.dart' as p;
-
-void main(List<String> args) {
-  // Assumes you have run "pub get" in the analyzer directory itself and uses
-  // that "packages" directory as its package root.
-  var packageRoot =
-      p.normalize(p.join(p.dirname(p.fromUri(Platform.script)), "packages"));
-
-  var best = new Duration(days: 1);
-  while (true) {
-    var start = new DateTime.now();
-    AnalysisEngine.instance.clearCaches();
-
-    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
-    options.strongModeHints = true;
-
-    PhysicalResourceProvider resourceProvider =
-        PhysicalResourceProvider.INSTANCE;
-    FolderBasedDartSdk sdk = new FolderBasedDartSdk(
-        resourceProvider, resourceProvider.getFolder(args[0]));
-    sdk.analysisOptions = options;
-
-    ContextBuilder builder = new ContextBuilder(resourceProvider, null, null);
-    AnalysisContext context = AnalysisEngine.instance.createAnalysisContext();
-    context.sourceFactory = new SourceFactory([
-      new DartUriResolver(sdk),
-      new ResourceUriResolver(resourceProvider),
-      new PackageMapUriResolver(resourceProvider,
-          builder.convertPackagesToMap(builder.createPackageMap(packageRoot)))
-    ]);
-    context.analysisOptions = options;
-
-    var mainSource =
-        new FileSource(resourceProvider.getFile(p.fromUri(Platform.script)));
-    context.applyChanges(new ChangeSet()..addedSource(mainSource));
-
-    var initialLibrary =
-        context.resolveCompilationUnit2(mainSource, mainSource);
-
-    // Walk all of the transitively referenced libraries and compute errors.
-    var errorCount = 0;
-    var allLibraries = _reachableLibraries(
-        resolutionMap.elementDeclaredByCompilationUnit(initialLibrary).library);
-    for (var lib in allLibraries) {
-      for (var unit in lib.units) {
-        var source = unit.source;
-
-        // Skip core libraries.
-        if (source.uri.scheme == 'dart') continue;
-
-        var librarySource = context.getLibrariesContaining(source).single;
-        context.resolveCompilationUnit2(source, librarySource);
-        errorCount += context.computeErrors(source).length;
-      }
-    }
-
-    var elapsed = new DateTime.now().difference(start);
-    print("$elapsed : $errorCount errors ${elapsed < best ? "(best)" : ""}");
-    if (elapsed < best) best = elapsed;
-  }
-}
-
-/// Returns all libraries transitively imported or exported from [start].
-List<LibraryElement> _reachableLibraries(LibraryElement start) {
-  var results = <LibraryElement>[];
-  var seen = new Set();
-  void find(LibraryElement lib) {
-    if (seen.contains(lib)) return;
-    seen.add(lib);
-    results.add(lib);
-    lib.importedLibraries.forEach(find);
-    lib.exportedLibraries.forEach(find);
-  }
-
-  find(start);
-  return results;
-}
diff --git a/pkg/analyzer/example/parser_driver.dart b/pkg/analyzer/example/parser_driver.dart
deleted file mode 100644
index 6515b34..0000000
--- a/pkg/analyzer/example/parser_driver.dart
+++ /dev/null
@@ -1,62 +0,0 @@
-#!/usr/bin/env dart
-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:io';
-
-import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/ast/visitor.dart';
-import 'package:analyzer/error/error.dart';
-import 'package:analyzer/error/listener.dart';
-import 'package:analyzer/file_system/physical_file_system.dart';
-import 'package:analyzer/src/dart/scanner/reader.dart';
-import 'package:analyzer/src/dart/scanner/scanner.dart';
-import 'package:analyzer/src/generated/parser.dart';
-
-main(List<String> args) {
-  print('working dir ${new File('.').resolveSymbolicLinksSync()}');
-
-  if (args.length == 0) {
-    print('Usage: parser_driver [files_to_parse]');
-    exit(0);
-  }
-
-  for (var arg in args) {
-    _parse(new File(arg));
-  }
-}
-
-_parse(File file) {
-  var src = file.readAsStringSync();
-  PhysicalResourceProvider resourceProvider = PhysicalResourceProvider.INSTANCE;
-  var source = resourceProvider.getFile(file.path).createSource();
-  var errorListener = new _ErrorCollector();
-  var reader = new CharSequenceReader(src);
-  var scanner = new Scanner(source, reader, errorListener);
-  var token = scanner.tokenize();
-  var parser = new Parser(source, errorListener);
-  var unit = parser.parseCompilationUnit(token);
-
-  var visitor = new _ASTVisitor();
-  unit.accept(visitor);
-
-  for (var error in errorListener.errors) {
-    print(error);
-  }
-}
-
-class _ASTVisitor extends GeneralizingAstVisitor {
-  @override
-  visitNode(AstNode node) {
-    print('${node.runtimeType} : <"$node">');
-    return super.visitNode(node);
-  }
-}
-
-class _ErrorCollector extends AnalysisErrorListener {
-  List<AnalysisError> errors;
-  _ErrorCollector() : errors = new List<AnalysisError>();
-  @override
-  onError(error) => errors.add(error);
-}
diff --git a/pkg/analyzer/example/resolver_driver.dart b/pkg/analyzer/example/resolver_driver.dart
deleted file mode 100755
index 6c972a8..0000000
--- a/pkg/analyzer/example/resolver_driver.dart
+++ /dev/null
@@ -1,87 +0,0 @@
-#!/usr/bin/env dart
-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:io';
-
-import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/ast/visitor.dart';
-import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/file_system/physical_file_system.dart';
-import 'package:analyzer/src/context/builder.dart';
-import 'package:analyzer/src/dart/sdk/sdk.dart';
-import 'package:analyzer/src/file_system/file_system.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/sdk.dart' show DartSdk;
-import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer/src/generated/source_io.dart';
-import 'package:analyzer/src/source/package_map_resolver.dart';
-import 'package:analyzer/src/source/source_resource.dart';
-
-void main(List<String> args) {
-  print('working dir ${new File('.').resolveSymbolicLinksSync()}');
-
-  if (args.length < 2 || args.length > 3) {
-    print(_usage);
-    exit(0);
-  }
-
-  String packageRoot;
-  if (args.length == 3) {
-    packageRoot = args[2];
-  }
-
-  PhysicalResourceProvider resourceProvider = PhysicalResourceProvider.INSTANCE;
-  DartSdk sdk = new FolderBasedDartSdk(
-      resourceProvider, resourceProvider.getFolder(args[0]));
-
-  var resolvers = [
-    new DartUriResolver(sdk),
-    new ResourceUriResolver(resourceProvider)
-  ];
-
-  if (packageRoot != null) {
-    ContextBuilder builder = new ContextBuilder(resourceProvider, null, null);
-    resolvers.add(new PackageMapUriResolver(resourceProvider,
-        builder.convertPackagesToMap(builder.createPackageMap(packageRoot))));
-  }
-
-  AnalysisContext context = AnalysisEngine.instance.createAnalysisContext()
-    ..sourceFactory = new SourceFactory(resolvers);
-
-  Source source = new FileSource(resourceProvider.getFile(args[1]));
-  ChangeSet changeSet = new ChangeSet()..addedSource(source);
-  context.applyChanges(changeSet);
-  LibraryElement libElement = context.computeLibraryElement(source);
-  print("libElement: $libElement");
-
-  CompilationUnit resolvedUnit =
-      context.resolveCompilationUnit(source, libElement);
-  var visitor = new _ASTVisitor();
-  resolvedUnit.accept(visitor);
-}
-
-const _usage =
-    'Usage: resolve_driver <path_to_sdk> <file_to_resolve> [<packages_root>]';
-
-class _ASTVisitor extends GeneralizingAstVisitor {
-  @override
-  visitNode(AstNode node) {
-    var lines = <String>['${node.runtimeType} : <"$node">'];
-    if (node is SimpleIdentifier) {
-      Element element = node.staticElement;
-      if (element != null) {
-        lines.add('  element: ${element.runtimeType}');
-        LibraryElement library = element.library;
-        if (library != null) {
-          var fullName =
-              element.library.definingCompilationUnit.source.fullName;
-          lines.add("  from $fullName");
-        }
-      }
-    }
-    print(lines.join('\n'));
-    return super.visitNode(node);
-  }
-}
diff --git a/pkg/analyzer/example/scanner_driver.dart b/pkg/analyzer/example/scanner_driver.dart
deleted file mode 100644
index 22a4e0f..0000000
--- a/pkg/analyzer/example/scanner_driver.dart
+++ /dev/null
@@ -1,43 +0,0 @@
-#!/usr/bin/env dart
-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:io';
-
-import 'package:analyzer/dart/ast/token.dart';
-import 'package:analyzer/error/listener.dart';
-import 'package:analyzer/file_system/physical_file_system.dart';
-import 'package:analyzer/src/dart/scanner/reader.dart';
-import 'package:analyzer/src/dart/scanner/scanner.dart';
-
-main(List<String> args) {
-  print('working dir ${new File('.').resolveSymbolicLinksSync()}');
-
-  if (args.length == 0) {
-    print('Usage: scanner_driver [files_to_scan]');
-    exit(0);
-  }
-
-  for (var arg in args) {
-    _scan(new File(arg));
-  }
-}
-
-_scan(File file) {
-  var src = file.readAsStringSync();
-  PhysicalResourceProvider resourceProvider = PhysicalResourceProvider.INSTANCE;
-  var source = resourceProvider.getFile(file.path).createSource();
-  var reader = new CharSequenceReader(src);
-  var listener = new BooleanErrorListener();
-  var scanner = new Scanner(source, reader, listener);
-  var token = scanner.tokenize();
-  while (token.type != TokenType.EOF) {
-    print(token);
-    token = token.next;
-  }
-  if (listener.errorReported) {
-    print('Errors found.');
-    exit(1);
-  }
-}
diff --git a/pkg/analyzer/lib/analyzer.dart b/pkg/analyzer/lib/analyzer.dart
index ab46a8d..3516414 100644
--- a/pkg/analyzer/lib/analyzer.dart
+++ b/pkg/analyzer/lib/analyzer.dart
@@ -2,6 +2,9 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+@deprecated
+library analyzer;
+
 import 'dart:io';
 
 import 'package:analyzer/dart/ast/ast.dart';
diff --git a/pkg/analyzer/lib/dart/analysis/context_builder.dart b/pkg/analyzer/lib/dart/analysis/context_builder.dart
index 69ef376..f99dce5 100644
--- a/pkg/analyzer/lib/dart/analysis/context_builder.dart
+++ b/pkg/analyzer/lib/dart/analysis/context_builder.dart
@@ -30,13 +30,22 @@
    * the the variable names found in `fromEnvironment` invocations to the
    * constant value that will be returned. If none is given, then no variables
    * will be defined.
+   * 
+   * If a list of [librarySummaryPaths] is provided, then the summary files at
+   * those paths will be used, when possible, when analyzing the libraries
+   * contained in the summary files.
    *
    * If an [sdkPath] is provided, and if it is a valid path to a directory
    * containing a valid SDK, then the SDK in the referenced directory will be
    * used when analyzing the code in the context.
+   * 
+   * If an [sdkSummaryPath] is provided, then that file will be used as the
+   * summary file for the SDK.
    */
   AnalysisContext createContext(
       {@required ContextRoot contextRoot,
       DeclaredVariables declaredVariables,
-      String sdkPath});
+      List<String> librarySummaryPaths,
+      String sdkPath,
+      String sdkSummaryPath});
 }
diff --git a/pkg/analyzer/lib/dart/analysis/results.dart b/pkg/analyzer/lib/dart/analysis/results.dart
index 2c33745..55defb7 100644
--- a/pkg/analyzer/lib/dart/analysis/results.dart
+++ b/pkg/analyzer/lib/dart/analysis/results.dart
@@ -9,43 +9,29 @@
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/source.dart';
 
-/**
- * The result of performing some kind of analysis on a single file. Every result
- * that implements this interface will also implement a sub-interface.
- *
- * Clients may not extend, implement or mix-in this class.
- */
+/// The result of performing some kind of analysis on a single file. Every
+/// result that implements this interface will also implement a sub-interface.
+///
+/// Clients may not extend, implement or mix-in this class.
 abstract class AnalysisResult {
-  /**
-   * The absolute and normalized path of the file that was analyzed.
-   */
+  /// The absolute and normalized path of the file that was analyzed.
   String get path;
 
-  /**
-   * Return the session used to compute this result.
-   */
+  /// Return the session used to compute this result.
   AnalysisSession get session;
 
-  /**
-   * The state of the results.
-   */
+  /// The state of the results.
   ResultState get state;
 
-  /**
-   * The absolute URI of the file that was analyzed.
-   */
+  /// The absolute URI of the file that was analyzed.
   Uri get uri;
 }
 
-/**
- * An analysis result that includes the errors computed during analysis.
- *
- * Clients may not extend, implement or mix-in this class.
- */
+/// An analysis result that includes the errors computed during analysis.
+///
+/// Clients may not extend, implement or mix-in this class.
 abstract class AnalysisResultWithErrors implements FileResult {
-  /**
-   * The analysis errors that were computed during analysis.
-   */
+  /// The analysis errors that were computed during analysis.
   List<AnalysisError> get errors;
 }
 
@@ -68,29 +54,21 @@
   ResolvedUnitResult get resolvedUnit;
 }
 
-/**
- * The result of computing all of the errors contained in a single file, both
- * syntactic and semantic.
- *
- * Clients may not extend, implement or mix-in this class.
- */
+/// The result of computing all of the errors contained in a single file, both
+/// syntactic and semantic.
+///
+/// Clients may not extend, implement or mix-in this class.
 abstract class ErrorsResult implements AnalysisResultWithErrors {}
 
-/**
- * The result of computing some cheap information for a single file, when full
- * parsed file is not required, so [ParseResult] is not necessary.
- *
- * Clients may not extend, implement or mix-in this class.
- */
+/// The result of computing some cheap information for a single file, when full
+/// parsed file is not required, so [ParsedUnitResult] is not necessary.
+///
+/// Clients may not extend, implement or mix-in this class.
 abstract class FileResult implements AnalysisResult {
-  /**
-   * Whether the file is a part.
-   */
+  /// Whether the file is a part.
   bool get isPart;
 
-  /**
-   * Information about lines in the content.
-   */
+  /// Information about lines in the content.
   LineInfo get lineInfo;
 }
 
@@ -111,23 +89,19 @@
 /// those discovered during scanning and parsing.
 ///
 /// Clients may not extend, implement or mix-in this class.
+// ignore: deprecated_member_use
 abstract class ParsedUnitResult implements ParseResult {}
 
-/**
- * The result of parsing of a single file. The errors returned include only
- * those discovered during scanning and parsing.
- *
- * Clients may not extend, implement or mix-in this class.
- */
+/// The result of parsing of a single file. The errors returned include only
+/// those discovered during scanning and parsing.
+///
+/// Clients may not extend, implement or mix-in this class.
+@deprecated
 abstract class ParseResult implements AnalysisResultWithErrors {
-  /**
-   * The content of the file that was scanned and parsed.
-   */
+  /// The content of the file that was scanned and parsed.
   String get content;
 
-  /**
-   * The parsed, unresolved compilation unit for the [content].
-   */
+  /// The parsed, unresolved compilation unit for the [content].
   CompilationUnit get unit;
 }
 
@@ -154,85 +128,61 @@
 /// include both syntactic and semantic errors.
 ///
 /// Clients may not extend, implement or mix-in this class.
+// ignore: deprecated_member_use
 abstract class ResolvedUnitResult implements ResolveResult {}
 
-/**
- * The result of building a resolved AST for a single file. The errors returned
- * include both syntactic and semantic errors.
- *
- * Clients may not extend, implement or mix-in this class.
- */
+/// The result of building a resolved AST for a single file. The errors returned
+/// include both syntactic and semantic errors.
+///
+/// Clients may not extend, implement or mix-in this class.
+@deprecated
 abstract class ResolveResult implements AnalysisResultWithErrors {
-  /**
-   * The content of the file that was scanned, parsed and resolved.
-   */
+  /// The content of the file that was scanned, parsed and resolved.
   String get content;
 
-  /**
-   * The element representing the library containing the compilation [unit].
-   */
+  /// The element representing the library containing the compilation [unit].
   LibraryElement get libraryElement;
 
-  /**
-   * The type provider used when resolving the compilation [unit].
-   */
+  /// The type provider used when resolving the compilation [unit].
   TypeProvider get typeProvider;
 
-  /**
-   * The type system used when resolving the compilation [unit].
-   */
+  /// The type system used when resolving the compilation [unit].
   TypeSystem get typeSystem;
 
-  /**
-   * The fully resolved compilation unit for the [content].
-   */
+  /// The fully resolved compilation unit for the [content].
   CompilationUnit get unit;
 }
 
-/**
- * An indication of whether an analysis result is valid, and if not why.
- */
+/// An indication of whether an analysis result is valid, and if not why.
 enum ResultState {
-  /**
-   * An indication that analysis could not be performed because the path
-   * represents a file of a type that cannot be analyzed.
-   */
+  /// An indication that analysis could not be performed because the path
+  /// represents a file of a type that cannot be analyzed.
   INVALID_FILE_TYPE,
 
-  /**
-   * An indication that analysis could not be performed because the path does
-   * not represent a file. It might represent something else, such as a
-   * directory, or it might not represent anything.
-   */
+  /// An indication that analysis could not be performed because the path does
+  /// not represent a file. It might represent something else, such as a
+  /// directory, or it might not represent anything.
   NOT_A_FILE,
 
-  /**
-   * An indication that analysis completed normally and the results are valid.
-   */
+  /// An indication that analysis completed normally and the results are valid.
   VALID
 }
 
-/**
- * The result of building the element model for a single file.
- *
- * Clients may not extend, implement or mix-in this class.
- */
+/// The result of building the element model for a single file.
+///
+/// Clients may not extend, implement or mix-in this class.
 abstract class UnitElementResult implements AnalysisResult {
-  /**
-   * The element of the file.
-   */
+  /// The element of the file.
   CompilationUnitElement get element;
 
-  /**
-   * The signature of the library containing the [element]. This is the same
-   * signature returned by the method [AnalysisSession.getUnitElementSignature]
-   * when given the path to the compilation unit represented by the [element].
-   *
-   * The signature is based on the APIs of the files of the library (including
-   * the file itself), and the transitive closure of files imported and exported
-   * by the library. If the signature of a file has not changed, then there have
-   * been no changes that would cause any files that depend on it to need to be
-   * re-analyzed.
-   */
+  /// The signature of the library containing the [element]. This is the same
+  /// signature returned by the method [AnalysisSession.getUnitElementSignature]
+  /// when given the path to the compilation unit represented by the [element].
+  ///
+  /// The signature is based on the APIs of the files of the library (including
+  /// the file itself), and the transitive closure of files imported and
+  /// exported by the library. If the signature of a file has not changed, then
+  /// there have been no changes that would cause any files that depend on it
+  /// to need to be re-analyzed.
   String get signature;
 }
diff --git a/pkg/analyzer/lib/dart/analysis/session.dart b/pkg/analyzer/lib/dart/analysis/session.dart
index b945ed6..6f31a7b 100644
--- a/pkg/analyzer/lib/dart/analysis/session.dart
+++ b/pkg/analyzer/lib/dart/analysis/session.dart
@@ -4,6 +4,7 @@
 
 import 'dart:async';
 
+import 'package:analyzer/dart/analysis/analysis_context.dart';
 import 'package:analyzer/dart/analysis/declared_variables.dart';
 import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/analysis/uri_converter.dart';
@@ -14,81 +15,86 @@
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/source.dart';
 
-/**
- * A consistent view of the results of analyzing one or more files.
- *
- * The methods in this class that return analysis results will throw an
- * [InconsistentAnalysisException] if the result to be returned might be
- * inconsistent with any previously returned results.
- *
- * Clients may not extend, implement or mix-in this class.
- */
+/// A consistent view of the results of analyzing one or more files.
+///
+/// The methods in this class that return analysis results will throw an
+/// [InconsistentAnalysisException] if the result to be returned might be
+/// inconsistent with any previously returned results.
+///
+/// Clients may not extend, implement or mix-in this class.
 abstract class AnalysisSession {
-  /**
-   * The declared environment variables.
-   */
+  /// The analysis context that created this session.
+  AnalysisContext get analysisContext;
+
+  /// The declared environment variables.
   DeclaredVariables get declaredVariables;
 
-  /**
-   * Return the [ResourceProvider] that is used to access the file system.
-   */
+  /// Return the [ResourceProvider] that is used to access the file system.
   ResourceProvider get resourceProvider;
 
-  /**
-   * Return the source factory used to resolve URIs.
-   *
-   * Deprecated: Use the methods on [uriConverter] instead.
-   */
+  /// Return the source factory used to resolve URIs.
+  ///
+  /// Deprecated: Use the methods on [uriConverter] instead.
   @deprecated
   SourceFactory get sourceFactory;
 
-  /**
-   * Return a type provider that is consistent with the results returned by this
-   * session.
-   */
+  /// Return a type provider that is consistent with the results returned by
+  /// this session.
   Future<TypeProvider> get typeProvider;
 
-  /**
-   * Return the type system being used by this session.
-   */
+  /// Return the type system being used by this session.
   Future<TypeSystem> get typeSystem;
 
-  /**
-   * Return the URI converter used to convert between URI's and file paths.
-   */
+  /// Return the URI converter used to convert between URI's and file paths.
   UriConverter get uriConverter;
 
-  /**
-   * Return a future that will complete with information about the errors
-   * contained in the file with the given absolute, normalized [path].
-   *
-   * If the file cannot be analyzed by this session, then the result will have
-   * a result state indicating the nature of the problem.
-   */
+  /// Return a future that will complete with information about the errors
+  /// contained in the file with the given absolute, normalized [path].
+  ///
+  /// If the file cannot be analyzed by this session, then the result will have
+  /// a result state indicating the nature of the problem.
   Future<ErrorsResult> getErrors(String path);
 
-  /**
-   * Return a future that will complete with the library element representing
-   * the library with the given [uri].
-   */
+  /// Return a future that will complete with the library element representing
+  /// the library with the given [uri].
   Future<LibraryElement> getLibraryByUri(String uri);
 
-  /**
-   * Return a future that will complete with information about the results of
-   * parsing the file with the given absolute, normalized [path].
-   */
+  /// Return a future that will complete with information about the results of
+  /// parsing the file with the given absolute, normalized [path].
+  ///
+  /// Deprecated: Use [getParsedUnit] instead.
+  @deprecated
   Future<ParseResult> getParsedAst(String path);
 
-  /**
-   * Return information about the results of parsing the file with the given
-   * absolute, normalized [path].
-   */
+  /// Return information about the results of parsing the file with the given
+  /// absolute, normalized [path].
+  ///
+  /// Deprecated: Use [getParsedUnit] instead.
+  @deprecated
   ParseResult getParsedAstSync(String path);
 
-  /**
-   * Return a future that will complete with information about the results of
-   * resolving the file with the given absolute, normalized [path].
-   */
+  /// Return information about the results of parsing units of the library file
+  /// with the given absolute, normalized [path].
+  ///
+  /// Throw [ArgumentError] if the given [path] is not the defining compilation
+  /// unit for a library (that is, is a part of a library).
+  ParsedLibraryResult getParsedLibrary(String path);
+
+  /// Return information about the results of parsing units of the library file
+  /// with the given library [element].
+  ///
+  /// Throw [ArgumentError] if the [element] was not produced by this session.
+  ParsedLibraryResult getParsedLibraryByElement(LibraryElement element);
+
+  /// Return information about the results of parsing the file with the given
+  /// absolute, normalized [path].
+  ParsedUnitResult getParsedUnit(String path);
+
+  /// Return a future that will complete with information about the results of
+  /// resolving the file with the given absolute, normalized [path].
+  ///
+  /// Deprecated: Use [getResolvedUnit] instead.
+  @deprecated
   Future<ResolveResult> getResolvedAst(String path);
 
   /// Return a future that will complete with information about the results of
@@ -106,46 +112,41 @@
   Future<ResolvedLibraryResult> getResolvedLibraryByElement(
       LibraryElement element);
 
-  /**
-   * Return a future that will complete with the source kind of the file with
-   * the given absolute, normalized [path]. If the path does not represent a
-   * file or if the kind of the file cannot be determined, then the future will
-   * complete with [SourceKind.UNKNOWN].
-   */
+  /// Return a future that will complete with information about the results of
+  /// resolving the file with the given absolute, normalized [path].
+  Future<ResolvedUnitResult> getResolvedUnit(String path);
+
+  /// Return a future that will complete with the source kind of the file with
+  /// the given absolute, normalized [path]. If the path does not represent a
+  /// file or if the kind of the file cannot be determined, then the future will
+  /// complete with [SourceKind.UNKNOWN].
   Future<SourceKind> getSourceKind(String path);
 
-  /**
-   * Return a future that will complete with a list of the top-level
-   * declarations with the given [name] in all known libraries.
-   */
+  /// Return a future that will complete with a list of the top-level
+  /// declarations with the given [name] in all known libraries.
   Future<List<TopLevelDeclarationInSource>> getTopLevelDeclarations(
       String name);
 
-  /**
-   * Return a future that will complete with information about the results of
-   * building the element model for the file with the given absolute, normalized
-   * [path].
-   */
+  /// Return a future that will complete with information about the results of
+  /// building the element model for the file with the given absolute,
+  /// normalized[path].
   Future<UnitElementResult> getUnitElement(String path);
 
-  /**
-   * Return a future that will complete with the signature for the file with the
-   * given absolute, normalized [path], or `null` if the file cannot be analyzed.
-   * This is the same signature returned in the result from [getUnitElement].
-   *
-   * The signature is based on the APIs of the files of the library (including
-   * the file itself), and the transitive closure of files imported and exported
-   * by the library. If the signature of a file has not changed, then there have
-   * been no changes that would cause any files that depend on it to need to be
-   * re-analyzed.
-   */
+  /// Return a future that will complete with the signature for the file with
+  /// the given absolute, normalized [path], or `null` if the file cannot be
+  /// analyzed. This is the same signature returned in the result from
+  /// [getUnitElement].
+  ///
+  /// The signature is based on the APIs of the files of the library (including
+  /// the file itself), and the transitive closure of files imported and
+  /// exported by the library. If the signature of a file has not changed, then
+  /// there have been no changes that would cause any files that depend on it to
+  /// need to be re-analyzed.
   Future<String> getUnitElementSignature(String path);
 }
 
-/**
- * The exception thrown by an [AnalysisSession] if a result is requested that
- * might be inconsistent with any previously returned results.
- */
+/// The exception thrown by an [AnalysisSession] if a result is requested that
+/// might be inconsistent with any previously returned results.
 class InconsistentAnalysisException extends AnalysisException {
   InconsistentAnalysisException()
       : super('Requested result might be inconsistent with previously '
diff --git a/pkg/analyzer/lib/dart/analysis/utilities.dart b/pkg/analyzer/lib/dart/analysis/utilities.dart
new file mode 100644
index 0000000..75ef87b
--- /dev/null
+++ b/pkg/analyzer/lib/dart/analysis/utilities.dart
@@ -0,0 +1,57 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analyzer/dart/analysis/analysis_context.dart';
+import 'package:analyzer/dart/analysis/analysis_context_collection.dart';
+import 'package:analyzer/dart/analysis/results.dart';
+import 'package:analyzer/file_system/file_system.dart';
+import 'package:analyzer/file_system/physical_file_system.dart';
+import 'package:meta/meta.dart';
+
+/// Return the result of parsing the file at the given [path].
+///
+/// If a [resourceProvider] is given, it will be used to access the file system.
+///
+/// Note that if more than one file is going to be parsed then this function is
+/// inefficient. Clients should instead use [AnalysisContextCollection] to
+/// create one or more contexts and use those contexts to parse the files.
+ParsedUnitResult parseFile(
+    {@required String path, ResourceProvider resourceProvider}) {
+  AnalysisContext context =
+      _createAnalysisContext(path: path, resourceProvider: resourceProvider);
+  return context.currentSession.getParsedUnit(path);
+}
+
+/// Return the result of resolving the file at the given [path].
+///
+/// If a [resourceProvider] is given, it will be used to access the file system.
+///
+/// Note that if more than one file is going to be resolved then this function
+/// is inefficient. Clients should instead use [AnalysisContextCollection] to
+/// create one or more contexts and use those contexts to resolve the files.
+Future<ResolvedUnitResult> resolveFile(
+    {@required String path, ResourceProvider resourceProvider}) async {
+  AnalysisContext context =
+      _createAnalysisContext(path: path, resourceProvider: resourceProvider);
+  return await context.currentSession.getResolvedUnit(path);
+}
+
+/// Return a newly create analysis context in which the file at the given [path]
+/// can be analyzed.
+///
+/// If a [resourceProvider] is given, it will be used to access the file system.
+AnalysisContext _createAnalysisContext(
+    {@required String path, ResourceProvider resourceProvider}) {
+  AnalysisContextCollection collection = new AnalysisContextCollection(
+    includedPaths: <String>[path],
+    resourceProvider: resourceProvider ?? PhysicalResourceProvider.INSTANCE,
+  );
+  List<AnalysisContext> contexts = collection.contexts;
+  if (contexts.length != 1) {
+    throw new ArgumentError('path must be an absolute path to a single file');
+  }
+  return contexts[0];
+}
diff --git a/pkg/analyzer/lib/dart/ast/ast.dart b/pkg/analyzer/lib/dart/ast/ast.dart
index 661d15b..d0c6320 100644
--- a/pkg/analyzer/lib/dart/ast/ast.dart
+++ b/pkg/analyzer/lib/dart/ast/ast.dart
@@ -554,6 +554,12 @@
   E thisOrAncestorMatching<E extends AstNode>(Predicate<AstNode> predicate);
 
   /**
+   * Return either this node or the most immediate ancestor of this node that
+   * has the given type, or `null` if there is no such node.
+   */
+  T thisOrAncestorOfType<T extends AstNode>();
+
+  /**
    * Return a textual description of this node in a form approximating valid
    * source. The returned string will not be valid source primarily in the case
    * where the node itself is not well-formed.
@@ -757,6 +763,8 @@
 
   R visitScriptTag(ScriptTag node);
 
+  R visitSetLiteral(SetLiteral node);
+
   R visitShowCombinator(ShowCombinator node);
 
   R visitSimpleFormalParameter(SimpleFormalParameter node);
@@ -4347,8 +4355,6 @@
  *        ('new' | 'const')? [TypeName] ('.' [SimpleIdentifier])? [ArgumentList]
  *
  * Clients may not extend, implement or mix-in this class.
- *
- * 'new' | 'const' are only optional if the previewDart2 option is enabled.
  */
 abstract class InstanceCreationExpression extends Expression
     implements ConstructorReferenceNode {
@@ -6029,6 +6035,43 @@
 }
 
 /**
+ * A literal set.
+ *
+ *    setLiteral ::=
+ *        'const'? ('<' [TypeAnnotation] '>')?
+ *        '{' [Expression] (',' [Expression])* ','? '}'
+ *      | 'const'? ('<' [TypeAnnotation] '>')? '{' '}'
+ *
+ * Clients may not extend, implement or mix-in this class.
+ */
+abstract class SetLiteral extends TypedLiteral {
+  /**
+   * Return the expressions used to compute the elements of the set.
+   */
+  NodeList<Expression> get elements;
+
+  /**
+   * Return the left curly bracket.
+   */
+  Token get leftBracket;
+
+  /**
+   * Set the left curly bracket to the given [token].
+   */
+  void set leftBracket(Token token);
+
+  /**
+   * Return the right curly bracket.
+   */
+  Token get rightBracket;
+
+  /**
+   * Set the right curly bracket to the given [token].
+   */
+  void set rightBracket(Token token);
+}
+
+/**
  * A combinator that restricts the names being imported to those in a given list.
  *
  *    showCombinator ::=
diff --git a/pkg/analyzer/lib/dart/ast/ast_factory.dart b/pkg/analyzer/lib/dart/ast/ast_factory.dart
index 5d46028..4d402b0 100644
--- a/pkg/analyzer/lib/dart/ast/ast_factory.dart
+++ b/pkg/analyzer/lib/dart/ast/ast_factory.dart
@@ -939,6 +939,15 @@
   ScriptTag scriptTag(Token scriptTag);
 
   /**
+   * Returns a newly created set literal. The [constKeyword] can be `null`
+   * if the literal is not a constant. The [typeArguments] can be `null` if no
+   * type arguments were declared. The list of [elements] can be `null` if the
+   * set is empty.
+   */
+  SetLiteral setLiteral(Token constKeyword, TypeArgumentList typeArguments,
+      Token leftBracket, List<Expression> elements, Token rightBracket);
+
+  /**
    * Returns a newly created import show combinator.
    */
   ShowCombinator showCombinator(
diff --git a/pkg/analyzer/lib/dart/ast/visitor.dart b/pkg/analyzer/lib/dart/ast/visitor.dart
index 6394b8b..53ff333 100644
--- a/pkg/analyzer/lib/dart/ast/visitor.dart
+++ b/pkg/analyzer/lib/dart/ast/visitor.dart
@@ -480,6 +480,9 @@
   R visitScriptTag(ScriptTag scriptTag) => visitNode(scriptTag);
 
   @override
+  R visitSetLiteral(SetLiteral node) => visitTypedLiteral(node);
+
+  @override
   R visitShowCombinator(ShowCombinator node) => visitCombinator(node);
 
   @override
@@ -1123,6 +1126,12 @@
   }
 
   @override
+  R visitSetLiteral(SetLiteral node) {
+    node.visitChildren(this);
+    return null;
+  }
+
+  @override
   R visitShowCombinator(ShowCombinator node) {
     node.visitChildren(this);
     return null;
@@ -1552,6 +1561,9 @@
   R visitScriptTag(ScriptTag node) => null;
 
   @override
+  R visitSetLiteral(SetLiteral node) => null;
+
+  @override
   R visitShowCombinator(ShowCombinator node) => null;
 
   @override
@@ -1910,6 +1922,9 @@
   R visitScriptTag(ScriptTag node) => _throw(node);
 
   @override
+  R visitSetLiteral(SetLiteral node) => _throw(node);
+
+  @override
   R visitShowCombinator(ShowCombinator node) => _throw(node);
 
   @override
@@ -2720,6 +2735,14 @@
   }
 
   @override
+  T visitSetLiteral(SetLiteral node) {
+    stopwatch.start();
+    T result = _baseVisitor.visitSetLiteral(node);
+    stopwatch.stop();
+    return result;
+  }
+
+  @override
   T visitShowCombinator(ShowCombinator node) {
     stopwatch.start();
     T result = _baseVisitor.visitShowCombinator(node);
@@ -3213,6 +3236,9 @@
   R visitScriptTag(ScriptTag scriptTag) => visitNode(scriptTag);
 
   @override
+  R visitSetLiteral(SetLiteral node) => visitNode(node);
+
+  @override
   R visitShowCombinator(ShowCombinator node) => visitNode(node);
 
   @override
@@ -3296,7 +3322,7 @@
  * A helper class used to implement the correct order of visits for a
  * [BreadthFirstVisitor].
  */
-class _BreadthFirstChildVisitor extends UnifyingAstVisitor<Object> {
+class _BreadthFirstChildVisitor extends UnifyingAstVisitor<void> {
   /**
    * The [BreadthFirstVisitor] being helped by this visitor.
    */
@@ -3308,8 +3334,7 @@
   _BreadthFirstChildVisitor(this.outerVisitor);
 
   @override
-  Object visitNode(AstNode node) {
+  void visitNode(AstNode node) {
     outerVisitor._queue.add(node);
-    return null;
   }
 }
diff --git a/pkg/analyzer/lib/dart/constant/value.dart b/pkg/analyzer/lib/dart/constant/value.dart
index 2d7ddda..64a29c6 100644
--- a/pkg/analyzer/lib/dart/constant/value.dart
+++ b/pkg/analyzer/lib/dart/constant/value.dart
@@ -130,6 +130,14 @@
   Map<DartObject, DartObject> toMapValue();
 
   /**
+   * Return a set corresponding to the value of the object being represented,
+   * or `null` if
+   * * this object is not of type 'Set', or
+   * * the value of the object being represented is `null`.
+   */
+  Set<DartObject> toSetValue();
+
+  /**
    * Return a string corresponding to the value of the object being represented,
    * or `null` if
    * * this object is not of type 'String',
diff --git a/pkg/analyzer/lib/dart/element/element.dart b/pkg/analyzer/lib/dart/element/element.dart
index a282eb8..87e6f0f 100644
--- a/pkg/analyzer/lib/dart/element/element.dart
+++ b/pkg/analyzer/lib/dart/element/element.dart
@@ -34,9 +34,11 @@
 /// representation of the statements in a method body, but if one of those
 /// statements declares a local variable then the local variable will be
 /// represented by an element.
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/constant/value.dart';
 import 'package:analyzer/dart/element/type.dart';
+import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/generated/engine.dart' show AnalysisContext;
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analyzer/src/generated/resolver.dart';
@@ -182,6 +184,7 @@
   /// the class.
   ConstructorElement get unnamedConstructor;
 
+  @deprecated
   @override
   NamedCompilationUnitMember computeNode();
 
@@ -405,6 +408,7 @@
   /// unit.
   List<ClassElement> get types;
 
+  @deprecated
   @override
   CompilationUnit computeNode();
 
@@ -453,6 +457,7 @@
   /// library containing this constructor has not yet been resolved.
   ConstructorElement get redirectedConstructor;
 
+  @deprecated
   @override
   ConstructorDeclaration computeNode();
 }
@@ -632,6 +637,9 @@
   /// does not have a name, or otherwise does not have an offset.
   int get nameOffset;
 
+  /// Return the analysis session in which this element is defined.
+  AnalysisSession get session;
+
   @override
   Source get source;
 
@@ -640,6 +648,7 @@
   ///
   /// This method is expensive, because resolved AST might have been already
   /// evicted from cache, so parsing and resolving will be performed.
+  @deprecated
   CompilationUnit get unit;
 
   /// Use the given [visitor] to visit this element. Return the value returned
@@ -667,6 +676,7 @@
   /// cache, so parsing and resolving will be performed.
   ///
   /// <b>Note:</b> This method cannot be used in an async environment.
+  @deprecated
   AstNode computeNode();
 
   /// Return the most immediate ancestor of this element for which the
@@ -703,10 +713,14 @@
   @deprecated
   static const List<ElementAnnotation> EMPTY_LIST = const <ElementAnnotation>[];
 
-  /// Return a representation of the value of this annotation.
-  ///
-  /// Return `null` if the value of this annotation could not be computed
-  /// because of errors.
+  /// Return the errors that were produced while computing a value for this
+  /// annotation, or `null` if no value has been computed. If a value has been
+  /// produced but no errors were generated, then the list will be empty.
+  List<AnalysisError> get constantEvaluationErrors;
+
+  /// Return a representation of the value of this annotation, or `null` if the
+  /// value of this annotation has not been computed or if the value could not
+  /// be computed because of errors.
   DartObject get constantValue;
 
   /// Return the element representing the field, variable, or const constructor
@@ -1055,6 +1069,7 @@
   @deprecated
   bool get isVirtual;
 
+  @deprecated
   @override
   AstNode computeNode();
 }
@@ -1097,6 +1112,7 @@
   /// and has the name `main`.
   bool get isEntryPoint;
 
+  @deprecated
   @override
   FunctionDeclaration computeNode();
 }
@@ -1118,6 +1134,7 @@
   /// type on the right side of the equals.
   GenericFunctionTypeElement get function;
 
+  @deprecated
   @override
   TypeAlias computeNode();
 
@@ -1301,6 +1318,11 @@
   /// computed yet.
   Namespace get publicNamespace;
 
+  /// Return the top-level elements defined in each of the compilation units
+  /// that are included in this library. This includes both public and private
+  /// elements, but does not include imports, exports, or synthetic elements.
+  Iterable<Element> get topLevelElements;
+
   /// Return a list containing all of the compilation units this library
   /// consists of. This includes the defining compilation unit and units
   /// included using the `part` directive.
@@ -1353,6 +1375,7 @@
   @deprecated
   static const List<MethodElement> EMPTY_LIST = const <MethodElement>[];
 
+  @deprecated
   @override
   MethodDeclaration computeNode();
 
@@ -1463,6 +1486,7 @@
   /// the given [buffer].
   void appendToWithoutDelimiters(StringBuffer buffer);
 
+  @deprecated
   @override
   FormalParameter computeNode();
 }
@@ -1597,6 +1621,7 @@
   static const List<TopLevelVariableElement> EMPTY_LIST =
       const <TopLevelVariableElement>[];
 
+  @deprecated
   @override
   VariableDeclaration computeNode();
 }
diff --git a/pkg/analyzer/lib/error/error.dart b/pkg/analyzer/lib/error/error.dart
index b6545a4..4ecccad 100644
--- a/pkg/analyzer/lib/error/error.dart
+++ b/pkg/analyzer/lib/error/error.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -57,11 +57,11 @@
   AnalysisOptionsHintCode.SUPER_MIXINS_SETTING_DEPRECATED,
   CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_FIELD_TYPE_MISMATCH,
   CheckedModeCompileTimeErrorCode.CONST_CONSTRUCTOR_PARAM_TYPE_MISMATCH,
-  CheckedModeCompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION,
   CheckedModeCompileTimeErrorCode.CONST_FIELD_INITIALIZER_NOT_ASSIGNABLE,
   CheckedModeCompileTimeErrorCode.LIST_ELEMENT_TYPE_NOT_ASSIGNABLE,
   CheckedModeCompileTimeErrorCode.MAP_KEY_TYPE_NOT_ASSIGNABLE,
   CheckedModeCompileTimeErrorCode.MAP_VALUE_TYPE_NOT_ASSIGNABLE,
+  CheckedModeCompileTimeErrorCode.SET_ELEMENT_TYPE_NOT_ASSIGNABLE,
   CheckedModeCompileTimeErrorCode.VARIABLE_TYPE_MISMATCH,
   CompileTimeErrorCode.ABSTRACT_SUPER_MEMBER_REFERENCE,
   CompileTimeErrorCode.ACCESS_PRIVATE_ENUM_FIELD,
@@ -96,9 +96,11 @@
   CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION,
   CompileTimeErrorCode.CONST_EVAL_THROWS_IDBZE,
   CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL,
+  CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_INT,
   CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_NUM_STRING,
   CompileTimeErrorCode.CONST_EVAL_TYPE_INT,
   CompileTimeErrorCode.CONST_EVAL_TYPE_NUM,
+  CompileTimeErrorCode.CONST_EVAL_TYPE_TYPE,
   CompileTimeErrorCode.CONST_FORMAL_PARAMETER,
   CompileTimeErrorCode.CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE,
   CompileTimeErrorCode
@@ -106,6 +108,7 @@
   CompileTimeErrorCode.CONST_INSTANCE_FIELD,
   CompileTimeErrorCode.CONST_MAP_KEY_EXPRESSION_TYPE_IMPLEMENTS_EQUALS,
   CompileTimeErrorCode.CONST_NOT_INITIALIZED,
+  CompileTimeErrorCode.CONST_SET_ELEMENT_TYPE_IMPLEMENTS_EQUALS,
   CompileTimeErrorCode.CONST_WITH_INVALID_TYPE_PARAMETERS,
   CompileTimeErrorCode.CONST_WITH_NON_CONST,
   CompileTimeErrorCode.CONST_WITH_NON_CONSTANT_ARGUMENT,
@@ -137,7 +140,7 @@
   CompileTimeErrorCode.FOR_IN_WITH_CONST_VARIABLE,
   CompileTimeErrorCode.GENERIC_FUNCTION_TYPED_PARAM_UNSUPPORTED,
   CompileTimeErrorCode.GENERIC_FUNCTION_TYPE_CANNOT_BE_BOUND,
-  CompileTimeErrorCode.GENERIC_FUNCTION_CANNOT_BE_TYPE_ARGUMENT,
+  CompileTimeErrorCode.GENERIC_FUNCTION_TYPE_CANNOT_BE_TYPE_ARGUMENT,
   CompileTimeErrorCode.IMPLEMENTS_DEFERRED_CLASS,
   CompileTimeErrorCode.IMPLEMENTS_DISALLOWED_CLASS,
   CompileTimeErrorCode.IMPLEMENTS_NON_CLASS,
@@ -172,6 +175,7 @@
   CompileTimeErrorCode.INVALID_REFERENCE_TO_THIS,
   CompileTimeErrorCode.INVALID_TYPE_ARGUMENT_IN_CONST_LIST,
   CompileTimeErrorCode.INVALID_TYPE_ARGUMENT_IN_CONST_MAP,
+  CompileTimeErrorCode.INVALID_TYPE_ARGUMENT_IN_CONST_SET,
   CompileTimeErrorCode.INVALID_URI,
   CompileTimeErrorCode.INVALID_USE_OF_COVARIANT,
   CompileTimeErrorCode.LABEL_IN_OUTER_SCOPE,
@@ -179,6 +183,7 @@
   CompileTimeErrorCode.MEMBER_WITH_CLASS_NAME,
   CompileTimeErrorCode.MISSING_CONST_IN_LIST_LITERAL,
   CompileTimeErrorCode.MISSING_CONST_IN_MAP_LITERAL,
+  CompileTimeErrorCode.MISSING_CONST_IN_SET_LITERAL,
   CompileTimeErrorCode.MISSING_DART_LIBRARY,
   CompileTimeErrorCode.MIXIN_APPLICATION_CONCRETE_SUPER_INVOKED_MEMBER_TYPE,
   CompileTimeErrorCode.MIXIN_APPLICATION_NOT_IMPLEMENTED_INTERFACE,
@@ -211,6 +216,8 @@
   CompileTimeErrorCode.NON_CONSTANT_MAP_KEY_FROM_DEFERRED_LIBRARY,
   CompileTimeErrorCode.NON_CONSTANT_MAP_VALUE,
   CompileTimeErrorCode.NON_CONSTANT_MAP_VALUE_FROM_DEFERRED_LIBRARY,
+  CompileTimeErrorCode.NON_CONSTANT_SET_ELEMENT,
+  CompileTimeErrorCode.NON_CONSTANT_SET_ELEMENT_FROM_DEFERRED_LIBRARY,
   CompileTimeErrorCode.NON_CONSTANT_VALUE_IN_INITIALIZER,
   CompileTimeErrorCode.NON_CONSTANT_VALUE_IN_INITIALIZER_FROM_DEFERRED_LIBRARY,
   CompileTimeErrorCode.NON_CONST_MAP_AS_EXPRESSION_STATEMENT,
@@ -318,7 +325,6 @@
   HintCode.TYPE_CHECK_IS_NULL,
   HintCode.UNDEFINED_GETTER,
   HintCode.UNDEFINED_HIDDEN_NAME,
-  HintCode.UNDEFINED_METHOD,
   HintCode.UNDEFINED_OPERATOR,
   HintCode.UNDEFINED_SETTER,
   HintCode.UNDEFINED_SHOWN_NAME,
@@ -533,6 +539,7 @@
   ScannerErrorCode.UNTERMINATED_MULTI_LINE_COMMENT,
   ScannerErrorCode.UNTERMINATED_STRING_LITERAL,
   StaticTypeWarningCode.EXPECTED_ONE_LIST_TYPE_ARGUMENTS,
+  StaticTypeWarningCode.EXPECTED_ONE_SET_TYPE_ARGUMENTS,
   StaticTypeWarningCode.EXPECTED_TWO_MAP_TYPE_ARGUMENTS,
   StaticTypeWarningCode.FOR_IN_OF_INVALID_ELEMENT_TYPE,
   StaticTypeWarningCode.FOR_IN_OF_INVALID_TYPE,
@@ -556,7 +563,6 @@
   StaticTypeWarningCode.UNDEFINED_FUNCTION,
   StaticTypeWarningCode.UNDEFINED_GETTER,
   StaticTypeWarningCode.UNDEFINED_METHOD,
-  StaticTypeWarningCode.UNDEFINED_METHOD_WITH_CONSTRUCTOR,
   StaticTypeWarningCode.UNDEFINED_OPERATOR,
   StaticTypeWarningCode.UNDEFINED_SETTER,
   StaticTypeWarningCode.UNDEFINED_SUPER_GETTER,
@@ -629,6 +635,7 @@
   StaticWarningCode.REDIRECT_TO_MISSING_CONSTRUCTOR,
   StaticWarningCode.REDIRECT_TO_NON_CLASS,
   StaticWarningCode.RETURN_WITHOUT_VALUE,
+  StaticWarningCode.SET_ELEMENT_TYPE_NOT_ASSIGNABLE,
   StaticWarningCode.STATIC_ACCESS_TO_INSTANCE_MEMBER,
   StaticWarningCode.SWITCH_EXPRESSION_NOT_ASSIGNABLE,
   StaticWarningCode.TYPE_ANNOTATION_DEFERRED_CLASS,
@@ -665,6 +672,7 @@
   StrongModeCode.INVALID_CAST_LITERAL,
   StrongModeCode.INVALID_CAST_LITERAL_LIST,
   StrongModeCode.INVALID_CAST_LITERAL_MAP,
+  StrongModeCode.INVALID_CAST_LITERAL_SET,
   StrongModeCode.INVALID_CAST_FUNCTION_EXPR,
   StrongModeCode.INVALID_CAST_NEW_EXPR,
   StrongModeCode.INVALID_CAST_METHOD,
diff --git a/pkg/analyzer/lib/error/listener.dart b/pkg/analyzer/lib/error/listener.dart
index eeef617..a835bc3 100644
--- a/pkg/analyzer/lib/error/listener.dart
+++ b/pkg/analyzer/lib/error/listener.dart
@@ -256,58 +256,32 @@
  * way that is appropriate for caching those errors within an analysis context.
  */
 class RecordingErrorListener implements AnalysisErrorListener {
-  /**
-   * A map of sets containing the errors that were collected, keyed by each
-   * source.
-   */
-  Map<Source, HashSet<AnalysisError>> _errors =
-      new HashMap<Source, HashSet<AnalysisError>>();
+  Set<AnalysisError> _errors;
 
   /**
    * Return the errors collected by the listener.
    */
   List<AnalysisError> get errors {
-    int numEntries = _errors.length;
-    if (numEntries == 0) {
-      return AnalysisError.NO_ERRORS;
+    if (_errors == null) {
+      return const <AnalysisError>[];
     }
-    List<AnalysisError> resultList = new List<AnalysisError>();
-    for (HashSet<AnalysisError> errors in _errors.values) {
-      resultList.addAll(errors);
-    }
-    return resultList;
-  }
-
-  /**
-   * Add all of the errors recorded by the given [listener] to this listener.
-   */
-  void addAll(RecordingErrorListener listener) {
-    for (AnalysisError error in listener.errors) {
-      onError(error);
-    }
+    return _errors.toList();
   }
 
   /**
    * Return the errors collected by the listener for the given [source].
    */
   List<AnalysisError> getErrorsForSource(Source source) {
-    HashSet<AnalysisError> errorsForSource = _errors[source];
-    if (errorsForSource == null) {
-      return AnalysisError.NO_ERRORS;
-    } else {
-      return new List.from(errorsForSource);
+    if (_errors == null) {
+      return const <AnalysisError>[];
     }
+    return _errors.where((error) => error.source == source).toList();
   }
 
   @override
   void onError(AnalysisError error) {
-    Source source = error.source;
-    HashSet<AnalysisError> errorsForSource = _errors[source];
-    if (_errors[source] == null) {
-      errorsForSource = new HashSet<AnalysisError>();
-      _errors[source] = errorsForSource;
-    }
-    errorsForSource.add(error);
+    _errors ??= new HashSet<AnalysisError>();
+    _errors.add(error);
   }
 }
 
diff --git a/pkg/analyzer/lib/src/codegen/html.dart b/pkg/analyzer/lib/src/codegen/html.dart
index f6405af..1cbce5f 100644
--- a/pkg/analyzer/lib/src/codegen/html.dart
+++ b/pkg/analyzer/lib/src/codegen/html.dart
@@ -75,7 +75,7 @@
 /**
  * Mixin class for generating HTML.
  */
-class HtmlGenerator {
+mixin HtmlGenerator {
   List<dom.Node> _html;
 
   /**
diff --git a/pkg/analyzer/lib/src/command_line/arguments.dart b/pkg/analyzer/lib/src/command_line/arguments.dart
index 904684c..c39ec25 100644
--- a/pkg/analyzer/lib/src/command_line/arguments.dart
+++ b/pkg/analyzer/lib/src/command_line/arguments.dart
@@ -15,7 +15,6 @@
 const String analysisOptionsFileOption = 'options';
 const String bazelAnalysisOptionsPath =
     'package:dart.analysis_options/default.yaml';
-const String declarationCastsFlag = 'declaration-casts';
 const String defineVariableOption = 'D';
 const String enableInitializingFormalAccessFlag = 'initializing-formal-access';
 @deprecated
@@ -47,13 +46,6 @@
     options.implicitCasts = args[implicitCastsFlag];
     verbose('$implicitCastsFlag = ${options.implicitCasts}');
   }
-  if (args.wasParsed(declarationCastsFlag)) {
-    options.declarationCasts = args[declarationCastsFlag];
-    verbose('$declarationCastsFlag = ${options.declarationCasts}');
-  } else if (args.wasParsed(implicitCastsFlag)) {
-    options.declarationCasts = args[implicitCastsFlag];
-    verbose('$declarationCastsFlag = ${options.declarationCasts}');
-  }
   if (args.wasParsed(noImplicitDynamicFlag)) {
     options.implicitDynamic = !args[noImplicitDynamicFlag];
     verbose('$noImplicitDynamicFlag = ${options.implicitDynamic}');
@@ -162,10 +154,10 @@
       defaultsTo: true,
       hide: true,
       negatable: true);
-  parser.addFlag(declarationCastsFlag,
+  parser.addFlag('declaration-casts',
       negatable: true,
       help: 'Disable declaration casts in strong mode (https://goo.gl/cTLz40)\n'
-          'This option is deprecated and will be removed in a future release.',
+          'This option is now ignored and will be removed in a future release.',
       hide: ddc && hide);
   parser.addFlag(implicitCastsFlag,
       negatable: true,
diff --git a/pkg/analyzer/lib/src/context/builder.dart b/pkg/analyzer/lib/src/context/builder.dart
index 8c7104e..3e50d4a 100644
--- a/pkg/analyzer/lib/src/context/builder.dart
+++ b/pkg/analyzer/lib/src/context/builder.dart
@@ -1,10 +1,12 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:collection';
 import 'dart:core';
 
+import 'package:analyzer/dart/analysis/analysis_context.dart' as api;
+import 'package:analyzer/dart/analysis/context_locator.dart' as api;
 import 'package:analyzer/dart/analysis/declared_variables.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/analysis_options/analysis_options_provider.dart';
@@ -15,27 +17,31 @@
         flutterAnalysisOptionsPath;
 import 'package:analyzer/src/context/context.dart';
 import 'package:analyzer/src/context/context_root.dart';
+import 'package:analyzer/src/dart/analysis/byte_store.dart';
+import 'package:analyzer/src/dart/analysis/context_root.dart' as api;
 import 'package:analyzer/src/dart/analysis/driver.dart'
     show AnalysisDriver, AnalysisDriverScheduler;
+import 'package:analyzer/src/dart/analysis/driver_based_analysis_context.dart'
+    as api;
 import 'package:analyzer/src/dart/analysis/file_state.dart';
+import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:analyzer/src/dart/sdk/sdk.dart';
-import 'package:analyzer/src/file_system/file_system.dart';
-import 'package:analyzer/src/generated/bazel.dart';
 import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/gn.dart';
-import 'package:analyzer/src/generated/package_build.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer/src/generated/workspace.dart';
+import 'package:analyzer/src/hint/sdk_constraint_extractor.dart';
 import 'package:analyzer/src/lint/registry.dart';
 import 'package:analyzer/src/plugin/resolver_provider.dart';
-import 'package:analyzer/src/source/package_map_resolver.dart';
+import 'package:analyzer/src/summary/package_bundle_reader.dart';
 import 'package:analyzer/src/summary/summary_sdk.dart';
 import 'package:analyzer/src/task/options.dart';
 import 'package:analyzer/src/util/uri.dart';
+import 'package:analyzer/src/workspace/basic.dart';
+import 'package:analyzer/src/workspace/bazel.dart';
+import 'package:analyzer/src/workspace/gn.dart';
+import 'package:analyzer/src/workspace/package_build.dart';
+import 'package:analyzer/src/workspace/workspace.dart';
 import 'package:args/args.dart';
-import 'package:analyzer/src/dart/analysis/byte_store.dart';
-import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:package_config/packages.dart';
 import 'package:package_config/packages_file.dart';
 import 'package:package_config/src/packages_impl.dart';
@@ -131,9 +137,10 @@
   FileContentOverlay fileContentOverlay;
 
   /**
-   * Whether to enable the Dart 2.0 preview.
+   * Whether any analysis driver created through this interface should support
+   * indexing and search.
    */
-  bool get previewDart2 => true;
+  bool enableIndex = false;
 
   /**
    * Initialize a newly created builder to be ready to build a context rooted in
@@ -155,7 +162,6 @@
     AnalysisOptionsImpl options = getAnalysisOptions(path);
     context.contentCache = contentCache;
     context.sourceFactory = createSourceFactory(path, options);
-    options.previewDart2 = previewDart2;
     context.analysisOptions = options;
     context.name = path;
     //_processAnalysisOptions(context, optionMap);
@@ -172,7 +178,11 @@
     AnalysisOptions options =
         getAnalysisOptions(path, contextRoot: contextRoot);
     //_processAnalysisOptions(context, optionMap);
-    final sf = createSourceFactory(path, options);
+    SummaryDataStore summaryData;
+    if (builderOptions.librarySummaryPaths != null) {
+      summaryData = SummaryDataStore(builderOptions.librarySummaryPaths);
+    }
+    final sf = createSourceFactory(path, options, summaryData: summaryData);
 
     AnalysisDriver driver = new AnalysisDriver(
         analysisDriverScheduler,
@@ -182,7 +192,23 @@
         fileContentOverlay,
         contextRoot,
         sf,
-        options);
+        options,
+        enableIndex: enableIndex,
+        externalSummaries: summaryData);
+
+    // Set API AnalysisContext for the driver.
+    var apiContextRoots = api.ContextLocator(
+      resourceProvider: resourceProvider,
+    ).locateRoots(
+      includedPaths: [contextRoot.root],
+      excludedPaths: contextRoot.exclude,
+    );
+    driver.analysisContext = api.DriverBasedAnalysisContext(
+      resourceProvider,
+      apiContextRoots.first,
+      driver,
+    );
+
     // temporary plugin support:
     if (onCreateAnalysisDriver != null) {
       onCreateAnalysisDriver(driver, analysisDriverScheduler, performanceLog,
@@ -255,10 +281,14 @@
     return findPackagesFromFile(rootDirectoryPath);
   }
 
-  SourceFactory createSourceFactory(String rootPath, AnalysisOptions options) {
+  SourceFactory createSourceFactory(String rootPath, AnalysisOptions options,
+      {SummaryDataStore summaryData}) {
     Workspace workspace = createWorkspace(rootPath);
     DartSdk sdk = findSdk(workspace.packageMap, options);
-    return workspace.createSourceFactory(sdk);
+    if (summaryData != null && sdk is SummaryBasedDartSdk) {
+      summaryData.addBundle(null, sdk.bundle);
+    }
+    return workspace.createSourceFactory(sdk, summaryData);
   }
 
   Workspace createWorkspace(String rootPath) {
@@ -266,12 +296,12 @@
       // Bazel workspaces that include package files are treated like normal
       // (non-Bazel) directories. But may still use package:build.
       return PackageBuildWorkspace.find(resourceProvider, rootPath, this) ??
-          _BasicWorkspace.find(resourceProvider, rootPath, this);
+          BasicWorkspace.find(resourceProvider, rootPath, this);
     }
     Workspace workspace = BazelWorkspace.find(resourceProvider, rootPath);
     workspace ??= GnWorkspace.find(resourceProvider, rootPath);
     workspace ??= PackageBuildWorkspace.find(resourceProvider, rootPath, this);
-    return workspace ?? _BasicWorkspace.find(resourceProvider, rootPath, this);
+    return workspace ?? BasicWorkspace.find(resourceProvider, rootPath, this);
   }
 
   /**
@@ -414,7 +444,7 @@
     // TODO(danrubel) restructure so that we don't create a workspace
     // both here and in createSourceFactory
     Workspace workspace = createWorkspace(path);
-    SourceFactory sourceFactory = workspace.createSourceFactory(null);
+    SourceFactory sourceFactory = workspace.createSourceFactory(null, null);
     AnalysisOptionsProvider optionsProvider =
         new AnalysisOptionsProvider(sourceFactory);
 
@@ -472,6 +502,16 @@
     } else {
       verbose('Using default analysis options');
     }
+
+    var pubspecFile = _findPubspecFile(path);
+    if (pubspecFile != null) {
+      var extractor = new SdkConstraintExtractor(pubspecFile);
+      var sdkVersionConstraint = extractor.constraint();
+      if (sdkVersionConstraint != null) {
+        options.sdkVersionConstraint = sdkVersionConstraint;
+      }
+    }
+
     return options;
   }
 
@@ -606,6 +646,24 @@
   }
 
   /**
+   * Return the `pubspec.yaml` file that should be used when analyzing code in
+   * the directory with the given [path], possibly `null`.
+   */
+  File _findPubspecFile(String path) {
+    var resource = resourceProvider.getResource(path);
+    while (resource != null) {
+      if (resource is Folder) {
+        File pubspecFile = resource.getChildAssumingFile('pubspec.yaml');
+        if (pubspecFile.exists) {
+          return pubspecFile;
+        }
+      }
+      resource = resource.parent;
+    }
+    return null;
+  }
+
+  /**
    * Return `true` if either the directory at [rootPath] or a parent of that
    * directory contains a `.packages` file.
    */
@@ -674,6 +732,12 @@
   String defaultPackagesDirectoryPath;
 
   /**
+   * A list of the paths of summary files that are to be used, or `null` if no
+   * summary information is available.
+   */
+  List<String> librarySummaryPaths;
+
+  /**
    * Initialize a newly created set of options
    */
   ContextBuilderOptions();
@@ -773,71 +837,3 @@
     }
   }
 }
-
-/**
- * Information about a default Dart workspace.
- */
-class _BasicWorkspace extends Workspace {
-  /**
-   * The [ResourceProvider] by which paths are converted into [Resource]s.
-   */
-  final ResourceProvider provider;
-
-  /**
-   * The absolute workspace root path.
-   */
-  final String root;
-
-  final ContextBuilder _builder;
-
-  Map<String, List<Folder>> _packageMap;
-
-  Packages _packages;
-
-  _BasicWorkspace._(this.provider, this.root, this._builder);
-
-  @override
-  Map<String, List<Folder>> get packageMap {
-    _packageMap ??= _builder.convertPackagesToMap(packages);
-    return _packageMap;
-  }
-
-  Packages get packages {
-    _packages ??= _builder.createPackageMap(root);
-    return _packages;
-  }
-
-  @override
-  UriResolver get packageUriResolver =>
-      new PackageMapUriResolver(provider, packageMap);
-
-  @override
-  SourceFactory createSourceFactory(DartSdk sdk) {
-    List<UriResolver> resolvers = <UriResolver>[];
-    if (sdk != null) {
-      resolvers.add(new DartUriResolver(sdk));
-    }
-    resolvers.add(packageUriResolver);
-    resolvers.add(new ResourceUriResolver(provider));
-    return new SourceFactory(resolvers, packages, provider);
-  }
-
-  /**
-   * Find the basic workspace that contains the given [path].
-   */
-  static _BasicWorkspace find(
-      ResourceProvider provider, String path, ContextBuilder builder) {
-    Context context = provider.pathContext;
-
-    // Ensure that the path is absolute and normalized.
-    if (!context.isAbsolute(path)) {
-      throw new ArgumentError('not absolute: $path');
-    }
-    path = context.normalize(path);
-    Resource resource = provider.getResource(path);
-    if (resource is File) {
-      path = resource.parent.path;
-    }
-    return new _BasicWorkspace._(provider, path, builder);
-  }
-}
diff --git a/pkg/analyzer/lib/src/context/context.dart b/pkg/analyzer/lib/src/context/context.dart
index 2dc5cfd..f26ad7d 100644
--- a/pkg/analyzer/lib/src/context/context.dart
+++ b/pkg/analyzer/lib/src/context/context.dart
@@ -283,9 +283,6 @@
             ? this._options.strongModeHints != options.strongModeHints
             : false) ||
         ((options is AnalysisOptionsImpl)
-            ? this._options.declarationCasts != options.declarationCasts
-            : false) ||
-        ((options is AnalysisOptionsImpl)
             ? this._options.implicitCasts != options.implicitCasts
             : false) ||
         ((options is AnalysisOptionsImpl)
@@ -313,10 +310,8 @@
     this._options.patchPaths = options.patchPaths;
     if (options is AnalysisOptionsImpl) {
       this._options.strongModeHints = options.strongModeHints;
-      this._options.declarationCasts = options.declarationCasts;
       this._options.implicitCasts = options.implicitCasts;
       this._options.implicitDynamic = options.implicitDynamic;
-      this._options.isMixinSupportEnabled = options.isMixinSupportEnabled;
     }
     if (needsRecompute) {
       for (WorkManager workManager in workManagers) {
diff --git a/pkg/analyzer/lib/src/dart/analysis/analysis_context_collection.dart b/pkg/analyzer/lib/src/dart/analysis/analysis_context_collection.dart
index a474878..f844029 100644
--- a/pkg/analyzer/lib/src/dart/analysis/analysis_context_collection.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/analysis_context_collection.dart
@@ -4,10 +4,11 @@
 
 import 'package:analyzer/dart/analysis/analysis_context.dart';
 import 'package:analyzer/dart/analysis/analysis_context_collection.dart';
-import 'package:analyzer/dart/analysis/context_builder.dart';
 import 'package:analyzer/dart/analysis/context_locator.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/physical_file_system.dart';
+import 'package:analyzer/src/dart/analysis/context_builder.dart';
+import 'package:analyzer/src/dart/analysis/file_state.dart';
 import 'package:meta/meta.dart';
 
 /// An implementation of [AnalysisContextCollection].
@@ -20,7 +21,9 @@
 
   /// Initialize a newly created analysis context manager.
   AnalysisContextCollectionImpl(
-      {@required List<String> includedPaths,
+      {bool enableIndex: false,
+      @deprecated FileContentOverlay fileContentOverlay,
+      @required List<String> includedPaths,
       ResourceProvider resourceProvider,
       String sdkPath})
       : resourceProvider =
@@ -35,11 +38,15 @@
     );
     var roots = contextLocator.locateRoots(includedPaths: includedPaths);
     for (var root in roots) {
-      var contextBuilder = new ContextBuilder(
+      var contextBuilder = new ContextBuilderImpl(
         resourceProvider: this.resourceProvider,
       );
-      var context =
-          contextBuilder.createContext(contextRoot: root, sdkPath: sdkPath);
+      var context = contextBuilder.createContext(
+        contextRoot: root,
+        enableIndex: enableIndex,
+        fileContentOverlay: fileContentOverlay,
+        sdkPath: sdkPath,
+      );
       contexts.add(context);
     }
   }
diff --git a/pkg/analyzer/lib/src/dart/analysis/ast_provider_driver.dart b/pkg/analyzer/lib/src/dart/analysis/ast_provider_driver.dart
deleted file mode 100644
index 21c2297..0000000
--- a/pkg/analyzer/lib/src/dart/analysis/ast_provider_driver.dart
+++ /dev/null
@@ -1,66 +0,0 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:async';
-
-import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
-import 'package:analyzer/src/dart/ast/utilities.dart';
-import 'package:analyzer/src/dart/element/ast_provider.dart';
-
-/**
- * [AstProvider] implementation for [AnalysisDriver].
- */
-class AstProviderForDriver implements AstProvider {
-  final AnalysisDriver driver;
-
-  AstProviderForDriver(this.driver);
-
-  @override
-  Future<SimpleIdentifier> getParsedNameForElement(Element element) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    CompilationUnit unit = await getParsedUnitForElement(element);
-    return _getNameNode(unit, element);
-  }
-
-  @override
-  Future<CompilationUnit> getParsedUnitForElement(Element element) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    String path = element.source.fullName;
-    ParseResult parseResult = await driver.parseFile(path);
-    return parseResult.unit;
-  }
-
-  @override
-  Future<SimpleIdentifier> getResolvedNameForElement(Element element) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    CompilationUnit unit = await getResolvedUnitForElement(element);
-    return _getNameNode(unit, element);
-  }
-
-  @override
-  Future<CompilationUnit> getResolvedUnitForElement(Element element) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    String path = element.source.fullName;
-    AnalysisResult analysisResult = await driver.getResult(path);
-    return analysisResult?.unit;
-  }
-
-  SimpleIdentifier _getNameNode(CompilationUnit unit, Element element) {
-    int nameOffset = element.nameOffset;
-    if (nameOffset == -1) {
-      return null;
-    }
-    AstNode nameNode = new NodeLocator(nameOffset).searchWithin(unit);
-    if (nameNode is SimpleIdentifier) {
-      return nameNode;
-    }
-    return null;
-  }
-}
diff --git a/pkg/analyzer/lib/src/dart/analysis/context_builder.dart b/pkg/analyzer/lib/src/dart/analysis/context_builder.dart
index f835eb6..074d46d 100644
--- a/pkg/analyzer/lib/src/dart/analysis/context_builder.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/context_builder.dart
@@ -11,18 +11,18 @@
 import 'package:analyzer/src/context/builder.dart' as old
     show ContextBuilder, ContextBuilderOptions;
 import 'package:analyzer/src/context/context_root.dart' as old;
+import 'package:analyzer/src/dart/analysis/byte_store.dart'
+    show ByteStore, MemoryByteStore;
 import 'package:analyzer/src/dart/analysis/driver.dart'
     show AnalysisDriver, AnalysisDriverScheduler;
 import 'package:analyzer/src/dart/analysis/driver_based_analysis_context.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart'
     show FileContentOverlay;
+import 'package:analyzer/src/dart/analysis/performance_logger.dart'
+    show PerformanceLog;
 import 'package:analyzer/src/dart/sdk/sdk.dart';
 import 'package:analyzer/src/generated/sdk.dart' show DartSdkManager;
 import 'package:analyzer/src/generated/source.dart' show ContentCache;
-import 'package:analyzer/src/dart/analysis/performance_logger.dart'
-    show PerformanceLog;
-import 'package:analyzer/src/dart/analysis/byte_store.dart'
-    show ByteStore, MemoryByteStore;
 import 'package:meta/meta.dart';
 
 /**
@@ -55,10 +55,15 @@
       {@deprecated ByteStore byteStore,
       @required ContextRoot contextRoot,
       DeclaredVariables declaredVariables,
+      bool enableIndex: false,
+      @deprecated FileContentOverlay fileContentOverlay,
+      List<String> librarySummaryPaths,
       @deprecated PerformanceLog performanceLog,
       @deprecated AnalysisDriverScheduler scheduler,
-      String sdkPath}) {
+      String sdkPath,
+      String sdkSummaryPath}) {
     byteStore ??= new MemoryByteStore();
+    fileContentOverlay ??= new FileContentOverlay();
     performanceLog ??= new PerformanceLog(new StringBuffer());
 
     sdkPath ??= _defaultSdkPath;
@@ -78,6 +83,12 @@
     if (declaredVariables != null) {
       options.declaredVariables = _toMap(declaredVariables);
     }
+    if (sdkSummaryPath != null) {
+      options.dartSdkSummaryPath = sdkSummaryPath;
+    }
+    if (librarySummaryPaths != null) {
+      options.librarySummaryPaths = librarySummaryPaths;
+    }
     options.defaultPackageFilePath = contextRoot.packagesFile?.path;
 
     old.ContextBuilder builder = new old.ContextBuilder(
@@ -85,7 +96,8 @@
         options: options);
     builder.analysisDriverScheduler = scheduler;
     builder.byteStore = byteStore;
-    builder.fileContentOverlay = new FileContentOverlay();
+    builder.fileContentOverlay = fileContentOverlay;
+    builder.enableIndex = enableIndex;
     builder.performanceLog = performanceLog;
 
     old.ContextRoot oldContextRoot = new old.ContextRoot(
diff --git a/pkg/analyzer/lib/src/dart/analysis/context_locator.dart b/pkg/analyzer/lib/src/dart/analysis/context_locator.dart
index 4422823..e3fff7c 100644
--- a/pkg/analyzer/lib/src/dart/analysis/context_locator.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/context_locator.dart
@@ -13,19 +13,18 @@
 import 'package:analyzer/src/context/builder.dart'
     show ContextBuilder, ContextBuilderOptions;
 import 'package:analyzer/src/context/context_root.dart' as old;
+import 'package:analyzer/src/dart/analysis/byte_store.dart'
+    show MemoryByteStore;
 import 'package:analyzer/src/dart/analysis/context_root.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart'
     show AnalysisDriver, AnalysisDriverScheduler;
 import 'package:analyzer/src/dart/analysis/driver_based_analysis_context.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart'
     show FileContentOverlay;
-import 'package:analyzer/src/dart/sdk/sdk.dart' show FolderBasedDartSdk;
-import 'package:analyzer/src/generated/sdk.dart' show DartSdkManager;
-import 'package:analyzer/src/generated/source.dart' show ContentCache;
 import 'package:analyzer/src/dart/analysis/performance_logger.dart'
     show PerformanceLog;
-import 'package:analyzer/src/dart/analysis/byte_store.dart'
-    show MemoryByteStore;
+import 'package:analyzer/src/dart/sdk/sdk.dart' show FolderBasedDartSdk;
+import 'package:analyzer/src/generated/sdk.dart' show DartSdkManager;
 import 'package:meta/meta.dart';
 
 /**
@@ -91,7 +90,7 @@
     scheduler.start();
     ContextBuilderOptions options = new ContextBuilderOptions();
     ContextBuilder builder = new ContextBuilder(
-        resourceProvider, sdkManager, new ContentCache(),
+        resourceProvider, sdkManager, null,
         options: options);
     if (packagesFile != null) {
       options.defaultPackageFilePath = packagesFile;
diff --git a/pkg/analyzer/lib/src/dart/analysis/dependency/library_builder.dart b/pkg/analyzer/lib/src/dart/analysis/dependency/library_builder.dart
new file mode 100644
index 0000000..5acbdc4
--- /dev/null
+++ b/pkg/analyzer/lib/src/dart/analysis/dependency/library_builder.dart
@@ -0,0 +1,667 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/dart/ast/token.dart';
+import 'package:analyzer/src/dart/analysis/dependency/node.dart';
+import 'package:analyzer/src/dart/ast/token.dart';
+import 'package:analyzer/src/summary/api_signature.dart';
+
+/// Build [Library] that describes nodes and dependencies of the library
+/// with the given [uri] and [units].
+///
+/// If the [units] are just parsed, then only token signatures and referenced
+/// names of nodes can be computed. If the [units] are fully resolved, then
+/// also class member references can be recorded.
+Library buildLibrary(
+  Uri uri,
+  List<CompilationUnit> units,
+  ReferenceCollector referenceCollector,
+) {
+  return _LibraryBuilder(uri, units, referenceCollector).build();
+}
+
+/// The `show` or `hide` namespace combinator.
+class Combinator {
+  final bool isShow;
+  final List<String> names;
+
+  Combinator(this.isShow, this.names);
+
+  @override
+  String toString() {
+    if (isShow) {
+      return 'show ' + names.join(', ');
+    } else {
+      return 'hide ' + names.join(', ');
+    }
+  }
+}
+
+/// The `export` directive.
+class Export {
+  /// The absolute URI of the exported library.
+  final Uri uri;
+
+  /// The list of namespace combinators to apply, not `null`.
+  final List<Combinator> combinators;
+
+  Export(this.uri, this.combinators);
+
+  @override
+  String toString() {
+    return 'Export(uri: $uri, combinators: $combinators)';
+  }
+}
+
+/// The `import` directive.
+class Import {
+  /// The absolute URI of the imported library.
+  final Uri uri;
+
+  /// The import prefix, or `null` if not specified.
+  final String prefix;
+
+  /// The list of namespace combinators to apply, not `null`.
+  final List<Combinator> combinators;
+
+  Import(this.uri, this.prefix, this.combinators);
+
+  @override
+  String toString() {
+    return 'Import(uri: $uri, prefix: $prefix, combinators: $combinators)';
+  }
+}
+
+/// The collection of imports, exports, and top-level nodes.
+class Library {
+  /// The absolute URI of the library.
+  final Uri uri;
+
+  /// The list of imports in this library.
+  final List<Import> imports;
+
+  /// The list of exports in this library.
+  final List<Export> exports;
+
+  /// The list of libraries that correspond to the [imports].
+  List<Library> importedLibraries;
+
+  /// The list of top-level nodes defined in the library.
+  ///
+  /// This list is sorted.
+  final List<DependencyNode> declaredNodes;
+
+  /// The map of [declaredNodes], used for fast search.
+  /// TODO(scheglov) consider using binary search instead.
+  final Map<DependencyName, DependencyNode> declaredNodeMap = {};
+
+  /// The list of nodes exported from this library, either using `export`
+  /// directives, or declared in this library.
+  ///
+  /// This list is sorted.
+  List<DependencyNode> exportedNodes;
+
+  /// The map of nodes that are visible in the library, either imported,
+  /// or declared in this library.
+  ///
+  /// TODO(scheglov) support for imports with prefixes
+  Map<String, DependencyNode> libraryScope;
+
+  Library(this.uri, this.imports, this.exports, this.declaredNodes) {
+    for (var node in declaredNodes) {
+      declaredNodeMap[node.name] = node;
+    }
+  }
+
+  @override
+  String toString() => '$uri';
+}
+
+/// The interface for a class that collects information about external nodes
+/// referenced by a node.
+///
+/// The workflow for using it is that the library builder creates a new
+/// instance, fills it with names of import prefixes using [addImportPrefix].
+/// Then for each node defined in the library, methods `appendXyz` called
+/// zero or more times to record references to external names to record API or
+/// implementation dependencies. When all dependencies of a node are appended,
+/// [finish] is invoked to construct the full [DependencyNodeDependencies].
+/// TODO(scheglov) In following CLs we will provide single implementation.
+abstract class ReferenceCollector {
+  final Uri libraryUri;
+
+  ReferenceCollector(this.libraryUri);
+
+  /// Record that the [name] is a name of an import prefix.
+  ///
+  /// So, when we see code like `prefix.foo` we know that `foo` should be
+  /// resolved in the import scope that corresponds to `prefix` (unless the
+  /// name `prefix` is shadowed by a local declaration).
+  void addImportPrefix(String name);
+
+  /// Collect external nodes referenced from the given [node].
+  void appendExpression(Expression node);
+
+  /// Collect external nodes referenced from the given [node].
+  void appendFormalParameters(FormalParameterList node);
+
+  /// Collect external nodes referenced from the given [node].
+  void appendFunctionBody(FunctionBody node);
+
+  /// Collect external nodes referenced from the given [node].
+  void appendTypeAnnotation(TypeAnnotation node);
+
+  /// Construct and return a new [DependencyNodeDependencies] with the given
+  /// [tokenSignature] and all recorded references to external nodes. Clear
+  /// data structures with recorded references and be ready to start recording
+  /// references for a new node.
+  DependencyNodeDependencies finish(List<int> tokenSignature);
+}
+
+class _LibraryBuilder {
+  /// The URI of the library.
+  final Uri uri;
+
+  /// The units of the library, parsed or fully resolved.
+  final List<CompilationUnit> units;
+
+  /// The instance of the referenced names, class members collector.
+  final ReferenceCollector referenceCollector;
+
+  /// The list of imports in the library.
+  final List<Import> imports = [];
+
+  /// The list of exports in the library.
+  final List<Export> exports = [];
+
+  /// The top-level nodes declared in the library.
+  final List<DependencyNode> declaredNodes = [];
+
+  _LibraryBuilder(this.uri, this.units, this.referenceCollector);
+
+  Library build() {
+    _addImports();
+    _addExports();
+
+    // TODO(scheglov) import prefixes are shadowed by class members
+
+    for (var unit in units) {
+      _addUnit(unit);
+    }
+    declaredNodes.sort(DependencyNode.compare);
+
+    return Library(uri, imports, exports, declaredNodes);
+  }
+
+  void _addClassOrMixin(ClassOrMixinDeclaration node) {
+    var hasConstConstructor = node.members.any(
+      (m) => m is ConstructorDeclaration && m.constKeyword != null,
+    );
+
+    List<DependencyNode> classTypeParameters;
+    if (node.typeParameters != null) {
+      classTypeParameters = <DependencyNode>[];
+      for (var typeParameter in node.typeParameters.typeParameters) {
+        classTypeParameters.add(DependencyNode(
+          DependencyName(uri, typeParameter.name.name),
+          DependencyNodeKind.TYPE_PARAMETER,
+          _computeApiDependencies(
+            _computeNodeTokenSignature(typeParameter),
+            typeParameter,
+          ),
+          DependencyNodeDependencies.none,
+        ));
+      }
+      classTypeParameters.sort(DependencyNode.compare);
+    }
+
+    var classMembers = <DependencyNode>[];
+    var hasConstructor = false;
+    for (var member in node.members) {
+      if (member is ConstructorDeclaration) {
+        hasConstructor = true;
+        _addConstructor(classMembers, member);
+      } else if (member is FieldDeclaration) {
+        _addVariables(
+          classMembers,
+          member.metadata,
+          member.fields,
+          hasConstConstructor,
+        );
+      } else if (member is MethodDeclaration) {
+        _addMethod(classMembers, member);
+      } else {
+        throw UnimplementedError('(${member.runtimeType}) $member');
+      }
+    }
+
+    if (!hasConstructor && node is ClassDeclaration) {
+      classMembers.add(DependencyNode(
+        DependencyName(uri, ''),
+        DependencyNodeKind.CONSTRUCTOR,
+        DependencyNodeDependencies.none,
+        DependencyNodeDependencies.none,
+      ));
+    }
+
+    var classTokenSignature = _computeTokenSignature(
+      node.beginToken,
+      node.leftBracket,
+    );
+    // TODO(scheglov) add library URI
+
+    var classNode = DependencyNode(
+      DependencyName(uri, node.name.name),
+      node is MixinDeclaration
+          ? DependencyNodeKind.MIXIN
+          : DependencyNodeKind.CLASS,
+      _computeApiDependencies(classTokenSignature, node),
+      DependencyNodeDependencies.none,
+      classTypeParameters: classTypeParameters,
+    );
+
+    classMembers.sort(DependencyNode.compare);
+    classNode.setClassMembers(classMembers);
+
+    declaredNodes.add(classNode);
+  }
+
+  void _addClassTypeAlias(ClassTypeAlias node) {
+    var tokenSignature = _computeNodeTokenSignature(node);
+    declaredNodes.add(DependencyNode(
+      DependencyName(uri, node.name.name),
+      DependencyNodeKind.CLASS_TYPE_ALIAS,
+      _computeApiDependencies(tokenSignature, node),
+      DependencyNodeDependencies.none,
+    ));
+  }
+
+  void _addConstructor(
+      List<DependencyNode> classMembers, ConstructorDeclaration node) {
+    var signature = ApiSignature();
+    _appendMetadataTokens(signature, node.metadata);
+    _appendFormalParametersTokens(signature, node.parameters);
+    var tokenSignature = signature.toByteList();
+
+    classMembers.add(DependencyNode(
+      DependencyName(uri, node.name?.name ?? ''),
+      DependencyNodeKind.CONSTRUCTOR,
+      _computeApiDependencies(tokenSignature, node),
+      DependencyNodeDependencies.none,
+    ));
+  }
+
+  void _addEnum(EnumDeclaration node) {
+    var classMembers = <DependencyNode>[];
+    for (var constant in node.constants) {
+      classMembers.add(DependencyNode(
+        DependencyName(uri, constant.name.name),
+        DependencyNodeKind.GETTER,
+        DependencyNodeDependencies.none,
+        DependencyNodeDependencies.none,
+      ));
+    }
+    classMembers.add(DependencyNode(
+      DependencyName(uri, 'index'),
+      DependencyNodeKind.GETTER,
+      DependencyNodeDependencies.none,
+      DependencyNodeDependencies.none,
+    ));
+    classMembers.add(DependencyNode(
+      DependencyName(uri, 'values'),
+      DependencyNodeKind.GETTER,
+      DependencyNodeDependencies.none,
+      DependencyNodeDependencies.none,
+    ));
+    classMembers.sort(DependencyNode.compare);
+
+    var enumNode = DependencyNode(
+      DependencyName(uri, node.name.name),
+      DependencyNodeKind.ENUM,
+      DependencyNodeDependencies.none,
+      DependencyNodeDependencies.none,
+    );
+    enumNode.setClassMembers(classMembers);
+
+    declaredNodes.add(enumNode);
+  }
+
+  /// Fill [exports] with information about exports.
+  void _addExports() {
+    for (var directive in units.first.directives) {
+      if (directive is ExportDirective) {
+        var refUri = directive.uri.stringValue;
+        var importUri = uri.resolve(refUri);
+        var combinators = _getCombinators(directive);
+        exports.add(Export(importUri, combinators));
+      }
+    }
+  }
+
+  void _addFunction(FunctionDeclaration node) {
+    var functionExpression = node.functionExpression;
+
+    var signature = ApiSignature();
+    _appendMetadataTokens(signature, node.metadata);
+    _appendNodeTokens(signature, node.returnType);
+    _appendNodeTokens(signature, functionExpression.typeParameters);
+    _appendFormalParametersTokens(signature, functionExpression.parameters);
+    var tokenSignature = signature.toByteList();
+
+    var rawName = node.name.name;
+    var name = DependencyName(uri, node.isSetter ? '$rawName=' : rawName);
+
+    DependencyNodeKind kind;
+    if (node.isGetter) {
+      kind = DependencyNodeKind.GETTER;
+    } else if (node.isSetter) {
+      kind = DependencyNodeKind.SETTER;
+    } else {
+      kind = DependencyNodeKind.FUNCTION;
+    }
+
+    referenceCollector.appendTypeAnnotation(node.returnType);
+    referenceCollector.appendFormalParameters(
+      node.functionExpression.parameters,
+    );
+    var api = referenceCollector.finish(tokenSignature);
+
+    var bodyNode = node.functionExpression.body;
+    var implTokenSignature = _computeNodeTokenSignature(bodyNode);
+    referenceCollector.appendFunctionBody(bodyNode);
+    var impl = referenceCollector.finish(implTokenSignature);
+
+    declaredNodes.add(DependencyNode(name, kind, api, impl));
+  }
+
+  void _addFunctionTypeAlias(FunctionTypeAlias node) {
+    var signature = ApiSignature();
+    _appendMetadataTokens(signature, node.metadata);
+    _appendNodeTokens(signature, node.typeParameters);
+    _appendNodeTokens(signature, node.returnType);
+    _appendFormalParametersTokens(signature, node.parameters);
+    var tokenSignature = signature.toByteList();
+
+    declaredNodes.add(DependencyNode(
+      DependencyName(uri, node.name.name),
+      DependencyNodeKind.FUNCTION_TYPE_ALIAS,
+      _computeApiDependencies(tokenSignature, node),
+      DependencyNodeDependencies.none,
+    ));
+  }
+
+  void _addGenericTypeAlias(GenericTypeAlias node) {
+    var functionType = node.functionType;
+
+    var signature = ApiSignature();
+    _appendMetadataTokens(signature, node.metadata);
+    _appendNodeTokens(signature, node.typeParameters);
+    _appendNodeTokens(signature, functionType.returnType);
+    _appendNodeTokens(signature, functionType.typeParameters);
+    _appendFormalParametersTokens(signature, functionType.parameters);
+    var tokenSignature = signature.toByteList();
+
+    declaredNodes.add(DependencyNode(
+      DependencyName(uri, node.name.name),
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      _computeApiDependencies(tokenSignature, node),
+      DependencyNodeDependencies.none,
+    ));
+  }
+
+  /// Fill [imports] with information about imports.
+  void _addImports() {
+    var hasDartCoreImport = false;
+    for (var directive in units.first.directives) {
+      if (directive is ImportDirective) {
+        var refUri = directive.uri.stringValue;
+        var importUri = uri.resolve(refUri);
+
+        if (importUri.toString() == 'dart:core') {
+          hasDartCoreImport = true;
+        }
+
+        var combinators = _getCombinators(directive);
+
+        imports.add(Import(importUri, directive.prefix?.name, combinators));
+
+        if (directive.prefix != null) {
+          referenceCollector.addImportPrefix(directive.prefix.name);
+        }
+      }
+    }
+
+    if (!hasDartCoreImport) {
+      imports.add(Import(Uri.parse('dart:core'), null, []));
+    }
+  }
+
+  void _addMethod(List<DependencyNode> classMembers, MethodDeclaration node) {
+    var signature = ApiSignature();
+    _appendMetadataTokens(signature, node.metadata);
+    _appendNodeTokens(signature, node.returnType);
+    _appendNodeTokens(signature, node.typeParameters);
+    _appendFormalParametersTokens(signature, node.parameters);
+    var tokenSignature = signature.toByteList();
+
+    DependencyNodeKind kind;
+    if (node.isGetter) {
+      kind = DependencyNodeKind.GETTER;
+    } else if (node.isSetter) {
+      kind = DependencyNodeKind.SETTER;
+    } else {
+      kind = DependencyNodeKind.METHOD;
+    }
+
+    referenceCollector.appendTypeAnnotation(node.returnType);
+    referenceCollector.appendFormalParameters(node.parameters);
+    var api = referenceCollector.finish(tokenSignature);
+
+    var implTokenSignature = _computeNodeTokenSignature(node.body);
+    referenceCollector.appendFunctionBody(node.body);
+    var impl = referenceCollector.finish(implTokenSignature);
+
+    classMembers.add(
+        DependencyNode(DependencyName(uri, node.name.name), kind, api, impl));
+  }
+
+  void _addUnit(CompilationUnit unit) {
+    for (var declaration in unit.declarations) {
+      if (declaration is ClassOrMixinDeclaration) {
+        _addClassOrMixin(declaration);
+      } else if (declaration is ClassTypeAlias) {
+        _addClassTypeAlias(declaration);
+      } else if (declaration is EnumDeclaration) {
+        _addEnum(declaration);
+      } else if (declaration is FunctionDeclaration) {
+        _addFunction(declaration);
+      } else if (declaration is FunctionTypeAlias) {
+        _addFunctionTypeAlias(declaration);
+      } else if (declaration is GenericTypeAlias) {
+        _addGenericTypeAlias(declaration);
+      } else if (declaration is TopLevelVariableDeclaration) {
+        _addVariables(
+          declaredNodes,
+          declaration.metadata,
+          declaration.variables,
+          false,
+        );
+      } else {
+        throw UnimplementedError('(${declaration.runtimeType}) $declaration');
+      }
+    }
+  }
+
+  void _addVariables(
+      List<DependencyNode> variableNodes,
+      List<Annotation> metadata,
+      VariableDeclarationList variables,
+      bool appendInitializerToApi) {
+    if (variables.isConst || variables.type == null) {
+      appendInitializerToApi = true;
+    }
+
+    for (var variable in variables.variables) {
+      var signature = ApiSignature();
+      signature.addInt(variables.isConst ? 1 : 0); // const flag
+      _appendMetadataTokens(signature, metadata);
+
+      _appendNodeTokens(signature, variables.type);
+      referenceCollector.appendTypeAnnotation(variables.type);
+
+      if (appendInitializerToApi) {
+        _appendNodeTokens(signature, variable.initializer);
+        referenceCollector.appendExpression(variable.initializer);
+      }
+
+      var tokenSignature = signature.toByteList();
+      var api = referenceCollector.finish(tokenSignature);
+
+      var rawName = variable.name.name;
+      variableNodes.add(
+        DependencyNode(
+          DependencyName(uri, rawName),
+          DependencyNodeKind.GETTER,
+          api,
+          DependencyNodeDependencies.none,
+        ),
+      );
+      if (!variables.isConst && !variables.isFinal) {
+        variableNodes.add(
+          DependencyNode(
+            DependencyName(uri, '$rawName='),
+            DependencyNodeKind.SETTER,
+            api,
+            DependencyNodeDependencies.none,
+          ),
+        );
+      }
+    }
+  }
+
+  /// Append tokens of the given [parameters] to the [signature].
+  static void _appendFormalParametersTokens(
+      ApiSignature signature, FormalParameterList parameters) {
+    if (parameters == null) return;
+
+    for (var parameter in parameters.parameters) {
+      if (parameter.isRequired) {
+        signature.addInt(1);
+      } else if (parameter.isOptionalPositional) {
+        signature.addInt(2);
+      } else {
+        signature.addInt(3);
+      }
+
+      // If a simple not named parameter, we don't need its name.
+      // We should be careful to include also annotations.
+      if (parameter is SimpleFormalParameter && parameter.type != null) {
+        _appendTokens(
+          signature,
+          parameter.beginToken,
+          parameter.type.endToken,
+        );
+        continue;
+      }
+
+      // We don't know anything better than adding the whole parameter.
+      _appendNodeTokens(signature, parameter);
+    }
+  }
+
+  static void _appendMetadataTokens(
+      ApiSignature signature, List<Annotation> metadata) {
+    if (metadata != null) {
+      for (var annotation in metadata) {
+        _appendNodeTokens(signature, annotation);
+      }
+    }
+  }
+
+  /// Append tokens of the given [node] to the [signature].
+  static void _appendNodeTokens(ApiSignature signature, AstNode node) {
+    if (node != null) {
+      _appendTokens(signature, node.beginToken, node.endToken);
+    }
+  }
+
+  /// Append tokens from [begin] to [end] (both including) to the [signature].
+  static void _appendTokens(ApiSignature signature, Token begin, Token end) {
+    if (begin is CommentToken) {
+      begin = (begin as CommentToken).parent;
+    }
+
+    Token token = begin;
+    while (token != null) {
+      signature.addString(token.lexeme);
+
+      if (token == end) {
+        break;
+      }
+
+      var nextToken = token.next;
+      if (nextToken == token) {
+        break;
+      }
+
+      token = nextToken;
+    }
+  }
+
+  /// TODO(scheglov) Replace all uses with [referenceCollector].
+  static DependencyNodeDependencies _computeApiDependencies(
+      List<int> tokenSignature, AstNode node,
+      [AstNode node2]) {
+    List<String> importPrefixes = [];
+    List<String> unprefixedReferencedNames = [];
+    List<List<String>> importPrefixedReferencedNames = [];
+    return DependencyNodeDependencies(
+      tokenSignature,
+      unprefixedReferencedNames,
+      importPrefixes,
+      importPrefixedReferencedNames,
+      const [],
+    );
+  }
+
+  /// Return the signature for all tokens of the [node].
+  static List<int> _computeNodeTokenSignature(AstNode node) {
+    if (node == null) {
+      return const <int>[];
+    }
+    return _computeTokenSignature(node.beginToken, node.endToken);
+  }
+
+  /// Return the signature for tokens from [begin] to [end] (both including).
+  static List<int> _computeTokenSignature(Token begin, Token end) {
+    var signature = ApiSignature();
+    _appendTokens(signature, begin, end);
+    return signature.toByteList();
+  }
+
+  /// Return [Combinator]s for the given import or export [directive].
+  static List<Combinator> _getCombinators(NamespaceDirective directive) {
+    var combinators = <Combinator>[];
+    for (var combinator in directive.combinators) {
+      if (combinator is ShowCombinator) {
+        combinators.add(
+          Combinator(
+            true,
+            combinator.shownNames.map((id) => id.name).toList(),
+          ),
+        );
+      }
+      if (combinator is HideCombinator) {
+        combinators.add(
+          Combinator(
+            false,
+            combinator.hiddenNames.map((id) => id.name).toList(),
+          ),
+        );
+      }
+    }
+    return combinators;
+  }
+}
diff --git a/pkg/analyzer/lib/src/dart/analysis/dependency/node.dart b/pkg/analyzer/lib/src/dart/analysis/dependency/node.dart
new file mode 100644
index 0000000..e3de954
--- /dev/null
+++ b/pkg/analyzer/lib/src/dart/analysis/dependency/node.dart
@@ -0,0 +1,248 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:typed_data';
+
+import 'package:analyzer/src/generated/utilities_general.dart';
+import 'package:convert/convert.dart';
+
+/// The reference to a class member.
+class ClassMemberReference {
+  /// The target class name.
+  ///
+  /// This is different from the class that actually turned out to define
+  /// the referenced member at the time of recording this reference. So, we
+  /// will notice added overrides in the target class, or anywhere in between.
+  final DependencyName target;
+
+  /// Whether the explicit `super` was used as the target.
+  /// The [target] is the enclosing class.
+  final bool targetSuper;
+
+  /// The name referenced in the [target].
+  final String name;
+
+  @override
+  final int hashCode;
+
+  ClassMemberReference(this.target, this.targetSuper, this.name)
+      : hashCode = JenkinsSmiHash.hash2(target.hashCode, name.hashCode);
+
+  @override
+  bool operator ==(other) {
+    return other is ClassMemberReference &&
+        other.target == target &&
+        other.targetSuper == targetSuper &&
+        other.name == name;
+  }
+
+  @override
+  String toString() {
+    return '($target, $name, super: $targetSuper)';
+  }
+
+  static int compare(ClassMemberReference first, ClassMemberReference second) {
+    var result = DependencyName.compare(first.target, second.target);
+    if (result != 0) return result;
+
+    if (first.targetSuper && !second.targetSuper) return -1;
+    if (!first.targetSuper && second.targetSuper) return 1;
+
+    return first.name.compareTo(second.name);
+  }
+}
+
+/// A name qualified by a library URI.
+class DependencyName {
+  /// The URI of the defining library.
+  /// Not `null`.
+  final Uri libraryUri;
+
+  /// The name of this name object.
+  /// If the name starts with `_`, then the name is private.
+  /// Names of setters end with `=`.
+  final String name;
+
+  /// Whether this name is private, and its [name] starts with `_`.
+  final bool isPrivate;
+
+  /// The cached, pre-computed hash code.
+  @override
+  final int hashCode;
+
+  factory DependencyName(Uri libraryUri, String name) {
+    var isPrivate = name.startsWith('_');
+    var hashCode = JenkinsSmiHash.hash2(libraryUri.hashCode, name.hashCode);
+    return DependencyName._internal(libraryUri, name, isPrivate, hashCode);
+  }
+
+  DependencyName._internal(
+      this.libraryUri, this.name, this.isPrivate, this.hashCode);
+
+  @override
+  bool operator ==(Object other) {
+    return other is DependencyName &&
+        other.hashCode == hashCode &&
+        name == other.name &&
+        libraryUri == other.libraryUri;
+  }
+
+  /// Whether this name us accessible for the library with the given
+  /// [libraryUri], i.e. when the name is public, or is defined in a library
+  /// with the same URI.
+  bool isAccessibleFor(Uri libraryUri) {
+    return !isPrivate || this.libraryUri == libraryUri;
+  }
+
+  @override
+  String toString() => '$libraryUri::$name';
+
+  /// Compare given names by their raw names.
+  ///
+  /// This method should be used only for sorting, it does not follow the
+  /// complete semantics of [==] and [hashCode].
+  static int compare(DependencyName first, DependencyName second) {
+    return first.name.compareTo(second.name);
+  }
+}
+
+/// A dependency node - anything that has a name, and can be referenced.
+class DependencyNode {
+  /// The API or implementation signature used in [DependencyNodeDependencies]
+  /// as a marker that this node is changed, explicitly because its token
+  /// signature changed, or implicitly - because it references a changed node.
+  static final changedSignature = Uint8List.fromList([0xDE, 0xAD, 0xBE, 0xEF]);
+
+  final DependencyName name;
+  final DependencyNodeKind kind;
+
+  /// Dependencies that affect the API of the node, so affect API or
+  /// implementation dependencies of the nodes that use this node.
+  final DependencyNodeDependencies api;
+
+  /// Additional (to the [api]) dependencies that affect only the
+  /// "implementation" of the node, e.g. the body of a method, but are not
+  /// visible outside of the node, and so don't affect any other nodes.
+  final DependencyNodeDependencies impl;
+
+  /// If the node is a class member, the node of the enclosing class.
+  /// Otherwise `null`.
+  final DependencyNode enclosingClass;
+
+  /// If the node is a class, the nodes of its type parameters.
+  /// Otherwise `null`.
+  final List<DependencyNode> classTypeParameters;
+
+  /// If the node is a class, the sorted list of members in this class.
+  /// Otherwise `null`.
+  List<DependencyNode> classMembers;
+
+  DependencyNode(
+    this.name,
+    this.kind,
+    this.api,
+    this.impl, {
+    this.enclosingClass,
+    this.classTypeParameters,
+  });
+
+  /// Return the node that can be referenced by the given [name] from the
+  /// library with the given [libraryUri].
+  DependencyNode getClassMember(Uri libraryUri, String name) {
+    // TODO(scheglov) The list is sorted, use this fact to search faster.
+    // TODO(scheglov) Collect superclass members here or outside.
+    for (var i = 0; i < classMembers.length; ++i) {
+      var member = classMembers[i];
+      var memberName = member.name;
+      if (memberName.name == name && memberName.isAccessibleFor(libraryUri)) {
+        return member;
+      }
+    }
+    return null;
+  }
+
+  /// Set new class members for this class.
+  void setClassMembers(List<DependencyNode> newClassMembers) {
+    classMembers = newClassMembers;
+  }
+
+  @override
+  String toString() {
+    if (enclosingClass != null) {
+      return '$enclosingClass::${name.name}';
+    }
+    return name.toString();
+  }
+
+  /// Compare given nodes by their names.
+  static int compare(DependencyNode first, DependencyNode second) {
+    return DependencyName.compare(first.name, second.name);
+  }
+}
+
+/// The dependencies of the API or implementation portion of a node.
+class DependencyNodeDependencies {
+  static final none = DependencyNodeDependencies([], [], [], [], []);
+
+  /// The token signature of this portion of the node. It depends on all
+  /// tokens that might affect the node API or implementation resolution.
+  final List<int> tokenSignature;
+
+  /// The names that appear unprefixed in this portion of the node, and are
+  /// not defined locally in the node. Locally defined names themselves
+  /// depend on some non-local nodes, which will also recorded here.
+  ///
+  /// This list is sorted.
+  final List<String> unprefixedReferencedNames;
+
+  /// The names of import prefixes used to reference names in this node.
+  ///
+  /// This list is sorted.
+  final List<String> importPrefixes;
+
+  /// The names referenced by this node with the import prefix at the
+  /// corresponding index in [importPrefixes].
+  ///
+  /// This list is sorted.
+  final List<List<String>> importPrefixedReferencedNames;
+
+  /// The class members referenced in this portion of the node.
+  ///
+  /// This list is sorted.
+  final List<ClassMemberReference> classMemberReferences;
+
+  /// All referenced nodes, computed from [unprefixedReferencedNames],
+  /// [importPrefixedReferencedNames], and [classMemberReferences].
+  List<DependencyNode> referencedNodes;
+
+  /// The transitive signature of this portion of the node, computed using
+  /// the [tokenSignature] of this node, and API signatures of the
+  /// [referencedNodes].
+  List<int> transitiveSignature;
+
+  DependencyNodeDependencies(
+      this.tokenSignature,
+      this.unprefixedReferencedNames,
+      this.importPrefixes,
+      this.importPrefixedReferencedNames,
+      this.classMemberReferences);
+
+  String get tokenSignatureHex => hex.encode(tokenSignature);
+}
+
+/// Kinds of nodes.
+enum DependencyNodeKind {
+  CLASS,
+  CLASS_TYPE_ALIAS,
+  CONSTRUCTOR,
+  ENUM,
+  FUNCTION,
+  FUNCTION_TYPE_ALIAS,
+  GENERIC_TYPE_ALIAS,
+  GETTER,
+  METHOD,
+  MIXIN,
+  SETTER,
+  TYPE_PARAMETER,
+}
diff --git a/pkg/analyzer/lib/src/dart/analysis/driver.dart b/pkg/analyzer/lib/src/dart/analysis/driver.dart
index 6f2d3ec..a1cc939 100644
--- a/pkg/analyzer/lib/src/dart/analysis/driver.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/driver.dart
@@ -6,13 +6,12 @@
 import 'dart:collection';
 import 'dart:typed_data';
 
+import 'package:analyzer/dart/analysis/analysis_context.dart' as api;
 import 'package:analyzer/dart/analysis/declared_variables.dart';
-import 'package:analyzer/dart/analysis/results.dart' as results;
 import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/element/element.dart'
-    show CompilationUnitElement, LibraryElement;
+import 'package:analyzer/dart/element/element.dart' show LibraryElement;
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/exception/exception.dart';
@@ -145,11 +144,6 @@
   AnalysisOptionsImpl _analysisOptions;
 
   /**
-   * The optional SDK bundle, used when the client cannot read SDK files.
-   */
-  final PackageBundle _sdkBundle;
-
-  /**
    * The [SourceFactory] is used to resolve URIs to paths and restore URIs
    * from file paths.
    */
@@ -166,16 +160,21 @@
   final ContextRoot contextRoot;
 
   /**
+   * The analysis context that created this driver / session.
+   */
+  api.AnalysisContext analysisContext;
+
+  /**
    * The salt to mix into all hashes used as keys for unlinked data.
    */
   final Uint32List _unlinkedSalt =
-      new Uint32List(1 + AnalysisOptionsImpl.unlinkedSignatureLength);
+      new Uint32List(2 + AnalysisOptionsImpl.unlinkedSignatureLength);
 
   /**
    * The salt to mix into all hashes used as keys for linked data.
    */
   final Uint32List _linkedSalt =
-      new Uint32List(1 + AnalysisOptions.signatureLength);
+      new Uint32List(2 + AnalysisOptions.signatureLength);
 
   /**
    * The set of priority files, that should be analyzed sooner.
@@ -186,7 +185,7 @@
    * The mapping from the files for which analysis was requested using
    * [getResult] to the [Completer]s to report the result.
    */
-  final _requestedFiles = <String, List<Completer<AnalysisResult>>>{};
+  final _requestedFiles = <String, List<Completer<ResolvedUnitResult>>>{};
 
   /**
    * The mapping from the files for which analysis was requested using
@@ -257,7 +256,7 @@
    * [getResult], and which were found to be parts without known libraries,
    * to the [Completer]s to report the result.
    */
-  final _requestedParts = <String, List<Completer<AnalysisResult>>>{};
+  final _requestedParts = <String, List<Completer<ResolvedUnitResult>>>{};
 
   /**
    * The set of part files that are currently scheduled for analysis.
@@ -267,12 +266,12 @@
   /**
    * The controller for the [results] stream.
    */
-  final _resultController = new StreamController<AnalysisResult>();
+  final _resultController = new StreamController<ResolvedUnitResult>();
 
   /**
    * The stream that will be written to when analysis results are produced.
    */
-  Stream<AnalysisResult> _onResults;
+  Stream<ResolvedUnitResult> _onResults;
 
   /**
    * Resolution signatures of the most recently produced results for files.
@@ -282,7 +281,7 @@
   /**
    * Cached results for [_priorityFiles].
    */
-  final Map<String, AnalysisResult> _priorityResults = {};
+  final Map<String, ResolvedUnitResult> _priorityResults = {};
 
   /**
    * The controller for the [exceptions] stream.
@@ -323,6 +322,11 @@
   final bool disableChangesAndCacheAllResults;
 
   /**
+   * Whether resolved units should be indexed.
+   */
+  final bool enableIndex;
+
+  /**
    * The cache to use with [disableChangesAndCacheAllResults].
    */
   final Map<String, AnalysisResult> _allCachedResults = {};
@@ -333,6 +337,13 @@
   AnalysisSessionImpl _currentSession;
 
   /**
+   * The current library context, consistent with the [_currentSession].
+   *
+   * TODO(scheglov) We probably should tie it into the session.
+   */
+  LibraryContext _libraryContext;
+
+  /**
    * Create a new instance of [AnalysisDriver].
    *
    * The given [SourceFactory] is cloned to ensure that it does not contain a
@@ -347,12 +358,11 @@
       this.contextRoot,
       SourceFactory sourceFactory,
       this._analysisOptions,
-      {PackageBundle sdkBundle,
-      this.disableChangesAndCacheAllResults: false,
+      {this.disableChangesAndCacheAllResults: false,
+      this.enableIndex: false,
       SummaryDataStore externalSummaries})
       : _logger = logger,
         _sourceFactory = sourceFactory.clone(),
-        _sdkBundle = sdkBundle,
         _externalSummaries = externalSummaries {
     _createNewSession();
     _onResults = _resultController.stream.asBroadcastStream();
@@ -456,7 +466,7 @@
    * Results might be produced even for files that have never been added
    * using [addFile], for example when [getResult] was called for a file.
    */
-  Stream<AnalysisResult> get results => _onResults;
+  Stream<ResolvedUnitResult> get results => _onResults;
 
   /**
    * Return the search support for the driver.
@@ -528,6 +538,7 @@
         _unitElementRequestedParts.isNotEmpty) {
       return AnalysisDriverPriority.general;
     }
+    _libraryContext = null;
     return AnalysisDriverPriority.nothing;
   }
 
@@ -539,13 +550,7 @@
     }
     if (AnalysisEngine.isDartFileName(path)) {
       _fileTracker.addFile(path);
-      // If the file is known, it has already been read, even if it did not
-      // exist. Now we are notified that the file exists, so we need to
-      // re-read it and make sure that we invalidate signature of the files
-      // that reference it.
-      if (_fsState.knownFilePaths.contains(path)) {
-        _changeFile(path);
-      }
+      _changeFile(path);
     }
   }
 
@@ -613,17 +618,17 @@
   }
 
   /**
-   * Return the cached [AnalysisResult] for the Dart file with the given [path].
-   * If there is no cached result, return `null`. Usually only results of
-   * priority files are cached.
+   * Return the cached [ResolvedUnitResult] for the Dart file with the given
+   * [path]. If there is no cached result, return `null`. Usually only results
+   * of priority files are cached.
    *
    * The [path] must be absolute and normalized.
    *
    * The [path] can be any file - explicitly or implicitly analyzed, or neither.
    */
-  AnalysisResult getCachedResult(String path) {
+  ResolvedUnitResult getCachedResult(String path) {
     _throwIfNotAbsolutePath(path);
-    AnalysisResult result = _priorityResults[path];
+    ResolvedUnitResult result = _priorityResults[path];
     if (disableChangesAndCacheAllResults) {
       result ??= _allCachedResults[path];
     }
@@ -647,13 +652,7 @@
 
     // Ask the analysis result without unit, so return cached errors.
     // If no cached analysis result, it will be computed.
-    AnalysisResult analysisResult = await _computeAnalysisResult(path);
-
-    // Check for asynchronous changes during computing the result.
-    await _runTestAsyncWorkDuringAnalysis(path);
-    if (_fileTracker.hasChangedFiles) {
-      analysisResult = null;
-    }
+    ResolvedUnitResult analysisResult = _computeAnalysisResult(path);
 
     // If not computed yet, because a part file without a known library,
     // we have to compute the full analysis result, with the unit.
@@ -662,7 +661,7 @@
       return null;
     }
 
-    return new ErrorsResult(currentSession, path, analysisResult.uri,
+    return new ErrorsResultImpl(currentSession, path, analysisResult.uri,
         analysisResult.lineInfo, analysisResult.isPart, analysisResult.errors);
   }
 
@@ -698,7 +697,7 @@
   FileResult getFileSync(String path) {
     _throwIfNotAbsolutePath(path);
     FileState file = _fileTracker.verifyApiSignature(path);
-    return new FileResult(
+    return new FileResultImpl(
         _currentSession, path, file.uri, file.lineInfo, file.isPart);
   }
 
@@ -709,6 +708,9 @@
    */
   Future<AnalysisDriverUnitIndex> getIndex(String path) {
     _throwIfNotAbsolutePath(path);
+    if (!enableIndex) {
+      throw new ArgumentError('Indexing is not enabled.');
+    }
     if (!_fsState.hasUri(path)) {
       return new Future.value();
     }
@@ -724,20 +726,78 @@
    * Return a [Future] that completes with the [LibraryElement] for the given
    * [uri], which is either resynthesized from the provided external summary
    * store, or built for a file to which the given [uri] is resolved.
+   *
+   * Throw [ArgumentError] if the [uri] corresponds to a part.
    */
   Future<LibraryElement> getLibraryByUri(String uri) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    if (_externalSummaries != null && _externalSummaries.hasUnlinkedUnit(uri)) {
-      return LibraryContext.resynthesizeLibraryElement(analysisOptions,
-          declaredVariables, sourceFactory, _externalSummaries, uri);
+    var uriObj = Uri.parse(uri);
+    var file = _fsState.getFileForUri(uriObj);
+
+    if (file.isExternalLibrary) {
+      return _createLibraryContext(file).getLibraryElement(file);
     }
-    Source source = sourceFactory.resolveUri(null, uri);
-    UnitElementResult unitResult = await getUnitElement(source.fullName);
+
+    if (file.isPart) {
+      throw ArgumentError('$uri is not a library.');
+    }
+
+    UnitElementResult unitResult = await getUnitElement(file.path);
     return unitResult.element.library;
   }
 
   /**
+   * Return a [ParsedLibraryResult] for the library with the given [path].
+   *
+   * Throw [ArgumentError] if the given [path] is not the defining compilation
+   * unit for a library (that is, is a part of a library).
+   *
+   * The [path] must be absolute and normalized.
+   */
+  ParsedLibraryResult getParsedLibrary(String path) {
+    FileState file = _fsState.getFileForPath(path);
+
+    if (file.isExternalLibrary) {
+      return ParsedLibraryResultImpl.external(currentSession, file.uri);
+    }
+
+    if (file.isPart) {
+      throw ArgumentError('Is a part: $path');
+    }
+
+    var units = <ParsedUnitResult>[];
+    for (var unitFile in file.libraryFiles) {
+      var unitPath = unitFile.path;
+      if (unitPath != null) {
+        var unitResult = parseFileSync(unitPath);
+        units.add(unitResult);
+      }
+    }
+
+    return ParsedLibraryResultImpl(currentSession, path, file.uri, units);
+  }
+
+  /**
+   * Return a [ParsedLibraryResult] for the library with the given [uri].
+   *
+   * Throw [ArgumentError] if the given [uri] is not the defining compilation
+   * unit for a library (that is, is a part of a library).
+   */
+  ParsedLibraryResult getParsedLibraryByUri(Uri uri) {
+    FileState file = _fsState.getFileForUri(uri);
+
+    if (file.isExternalLibrary) {
+      return ParsedLibraryResultImpl.external(currentSession, file.uri);
+    }
+
+    if (file.isPart) {
+      throw ArgumentError('Is a part: $uri');
+    }
+
+    // The file is a local file, we can get the result.
+    return getParsedLibrary(file.path);
+  }
+
+  /**
    * Return a [Future] that completes with a [ResolvedLibraryResult] for the
    * Dart library file with the given [path].  If the file is not a Dart file
    * or cannot be analyzed, the [Future] completes with `null`.
@@ -823,7 +883,7 @@
   }
 
   /**
-   * Return a [Future] that completes with a [AnalysisResult] for the Dart
+   * Return a [Future] that completes with a [ResolvedUnitResult] for the Dart
    * file with the given [path]. If the file is not a Dart file or cannot
    * be analyzed, the [Future] completes with `null`.
    *
@@ -841,7 +901,7 @@
    * of the files previously reported using [changeFile]), prior to the next
    * time the analysis state transitions to "idle".
    */
-  Future<AnalysisResult> getResult(String path,
+  Future<ResolvedUnitResult> getResult(String path,
       {bool sendCachedToStream: false}) {
     _throwIfNotAbsolutePath(path);
     if (!_fsState.hasUri(path)) {
@@ -850,7 +910,7 @@
 
     // Return the cached result.
     {
-      AnalysisResult result = getCachedResult(path);
+      ResolvedUnitResult result = getCachedResult(path);
       if (result != null) {
         if (sendCachedToStream) {
           _resultController.add(result);
@@ -860,9 +920,9 @@
     }
 
     // Schedule analysis.
-    var completer = new Completer<AnalysisResult>();
+    var completer = new Completer<ResolvedUnitResult>();
     _requestedFiles
-        .putIfAbsent(path, () => <Completer<AnalysisResult>>[])
+        .putIfAbsent(path, () => <Completer<ResolvedUnitResult>>[])
         .add(completer);
     _scheduler.notify(this);
     return completer.future;
@@ -959,17 +1019,11 @@
    * not a part, so it must be a library.
    */
   bool isLibraryByUri(Uri uri) {
-    if (_externalSummaries != null) {
-      var uriStr = uri.toString();
-      if (_externalSummaries.unlinkedMap[uriStr] != null) {
-        return _externalSummaries.linkedMap.containsKey(uriStr);
-      }
-    }
     return !_fsState.getFileForUri(uri).isPart;
   }
 
   /**
-   * Return a [Future] that completes with a [ParseResult] for the file
+   * Return a [Future] that completes with a [ParsedUnitResult] for the file
    * with the given [path].
    *
    * The [path] must be absolute and normalized.
@@ -980,14 +1034,14 @@
    * produced through the [results] stream (just because it is not a fully
    * resolved unit).
    */
-  Future<ParseResult> parseFile(String path) async {
+  Future<ParsedUnitResult> parseFile(String path) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     return parseFileSync(path);
   }
 
   /**
-   * Return a [ParseResult] for the file with the given [path].
+   * Return a [ParsedUnitResult] for the file with the given [path].
    *
    * The [path] must be absolute and normalized.
    *
@@ -997,13 +1051,13 @@
    * produced through the [results] stream (just because it is not a fully
    * resolved unit).
    */
-  ParseResult parseFileSync(String path) {
+  ParsedUnitResult parseFileSync(String path) {
     _throwIfNotAbsolutePath(path);
     FileState file = _fileTracker.verifyApiSignature(path);
     RecordingErrorListener listener = new RecordingErrorListener();
     CompilationUnit unit = file.parse(listener);
-    return new ParseResult(currentSession, file.path, file.uri, file.content,
-        file.lineInfo, file.isPart, unit, listener.errors);
+    return new ParsedUnitResultImpl(currentSession, file.path, file.uri,
+        file.content, file.lineInfo, file.isPart, unit, listener.errors);
   }
 
   @override
@@ -1018,13 +1072,7 @@
     if (_requestedFiles.isNotEmpty) {
       String path = _requestedFiles.keys.first;
       try {
-        AnalysisResult result =
-            await _computeAnalysisResult(path, withUnit: true);
-        // Check for asynchronous changes during computing the result.
-        await _runTestAsyncWorkDuringAnalysis(path);
-        if (_fileTracker.hasChangedFiles) {
-          return;
-        }
+        AnalysisResult result = _computeAnalysisResult(path, withUnit: true);
         // If a part without a library, delay its analysis.
         if (result == null) {
           _requestedParts
@@ -1067,7 +1115,7 @@
     // Process an index request.
     if (_indexRequestedFiles.isNotEmpty) {
       String path = _indexRequestedFiles.keys.first;
-      AnalysisDriverUnitIndex index = await _computeIndex(path);
+      AnalysisDriverUnitIndex index = _computeIndex(path);
       _indexRequestedFiles.remove(path).forEach((completer) {
         completer.complete(index);
       });
@@ -1094,7 +1142,7 @@
     // Process a unit element request.
     if (_unitElementRequestedFiles.isNotEmpty) {
       String path = _unitElementRequestedFiles.keys.first;
-      UnitElementResult result = await _computeUnitElement(path);
+      UnitElementResult result = _computeUnitElement(path);
       var completers = _unitElementRequestedFiles.remove(path);
       if (result != null) {
         completers.forEach((completer) {
@@ -1152,8 +1200,7 @@
         if (_fileTracker.isFilePending(path)) {
           try {
             AnalysisResult result =
-                await _computeAnalysisResult(path, withUnit: true);
-            await _runTestAsyncWorkDuringAnalysis(path);
+                _computeAnalysisResult(path, withUnit: true);
             if (result == null) {
               _partsToAnalyze.add(path);
             } else {
@@ -1173,9 +1220,8 @@
     if (_fileTracker.hasPendingFiles) {
       String path = _fileTracker.anyPendingFile;
       try {
-        AnalysisResult result = await _computeAnalysisResult(path,
+        AnalysisResult result = _computeAnalysisResult(path,
             withUnit: false, skipIfSameSignature: true);
-        await _runTestAsyncWorkDuringAnalysis(path);
         if (result == null) {
           _partsToAnalyze.add(path);
         } else if (result == AnalysisResult._UNCHANGED) {
@@ -1197,12 +1243,8 @@
     if (_requestedParts.isNotEmpty) {
       String path = _requestedParts.keys.first;
       try {
-        AnalysisResult result = await _computeAnalysisResult(path,
+        AnalysisResult result = _computeAnalysisResult(path,
             withUnit: true, asIsIfPartWithoutLibrary: true);
-        // Check for asynchronous changes during computing the result.
-        if (_fileTracker.hasChangedFiles) {
-          return;
-        }
         // Notify the completers.
         _requestedParts.remove(path).forEach((completer) {
           completer.complete(result);
@@ -1224,7 +1266,7 @@
       String path = _partsToAnalyze.first;
       _partsToAnalyze.remove(path);
       try {
-        AnalysisResult result = await _computeAnalysisResult(path,
+        AnalysisResult result = _computeAnalysisResult(path,
             withUnit: _priorityFiles.contains(path),
             asIsIfPartWithoutLibrary: true);
         _resultController.add(result);
@@ -1237,7 +1279,7 @@
     // Process a unit element signature request for a part.
     if (_unitElementSignatureParts.isNotEmpty) {
       String path = _unitElementSignatureParts.keys.first;
-      var signature =
+      String signature =
           _computeUnitElementSignature(path, asIsIfPartWithoutLibrary: true);
       _unitElementSignatureParts.remove(path).forEach((completer) {
         completer.complete(signature);
@@ -1249,7 +1291,7 @@
     if (_unitElementRequestedParts.isNotEmpty) {
       String path = _unitElementRequestedParts.keys.first;
       UnitElementResult result =
-          await _computeUnitElement(path, asIsIfPartWithoutLibrary: true);
+          _computeUnitElement(path, asIsIfPartWithoutLibrary: true);
       _unitElementRequestedParts.remove(path).forEach((completer) {
         completer.complete(result);
       });
@@ -1270,6 +1312,7 @@
     _throwIfNotAbsolutePath(path);
     _throwIfChangesAreNotAllowed();
     _fileTracker.removeFile(path);
+    _libraryContext = null;
     _priorityResults.clear();
   }
 
@@ -1277,8 +1320,15 @@
    * Implementation for [changeFile].
    */
   void _changeFile(String path) {
-    _fileTracker.changeFile(path);
-    _priorityResults.clear();
+    // If the file is known, it has already been read, even if it din't exist.
+    // Now we are notified that the file changed (just changed or added), so we
+    // need to re-read it and make sure that we invalidate signature of the
+    // files that reference it.
+    if (_fsState.knownFilePaths.contains(path)) {
+      _fileTracker.changeFile(path);
+      _libraryContext = null;
+      _priorityResults.clear();
+    }
   }
 
   /**
@@ -1287,6 +1337,7 @@
    */
   void _changeHook() {
     _createNewSession();
+    _libraryContext = null;
     _priorityResults.clear();
     _scheduler.notify(this);
   }
@@ -1306,12 +1357,10 @@
    * the resolved signature of the file in its library is the same as the one
    * that was the most recently produced to the client.
    */
-  Future<AnalysisResult> _computeAnalysisResult(String path,
+  AnalysisResult _computeAnalysisResult(String path,
       {bool withUnit: false,
       bool asIsIfPartWithoutLibrary: false,
-      bool skipIfSameSignature: false}) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
+      bool skipIfSameSignature: false}) {
     FileState file = _fsState.getFileForPath(path);
 
     // Prepare the library - the file itself, or the known library.
@@ -1347,67 +1396,60 @@
     }
 
     // We need the fully resolved unit, or the result is not cached.
-    return _logger.runAsync('Compute analysis result for $path', () async {
-      // TODO(brianwilkerson) Determine whether this await is necessary.
-      await null;
+    return _logger.run('Compute analysis result for $path', () {
       try {
-        LibraryContext libraryContext;
-        try {
-          _testView.numOfAnalyzedLibraries++;
+        _testView.numOfAnalyzedLibraries++;
 
-          if (!_fsState.getFileForUri(Uri.parse('dart:core')).exists) {
-            return _newMissingDartLibraryResult(file, 'dart:core');
-          }
-          if (!_fsState.getFileForUri(Uri.parse('dart:async')).exists) {
-            return _newMissingDartLibraryResult(file, 'dart:async');
-          }
-          libraryContext = _createLibraryContext(library);
-
-          LibraryAnalyzer analyzer = new LibraryAnalyzer(
-              analysisOptions,
-              declaredVariables,
-              sourceFactory,
-              libraryContext.isLibraryUri,
-              libraryContext.analysisContext,
-              libraryContext.resynthesizer,
-              library,
-              _resourceProvider);
-          Map<FileState, UnitAnalysisResult> results = analyzer.analyze();
-
-          List<int> bytes;
-          CompilationUnit resolvedUnit;
-          for (FileState unitFile in results.keys) {
-            UnitAnalysisResult unitResult = results[unitFile];
-            List<int> unitBytes =
-                _serializeResolvedUnit(unitResult.unit, unitResult.errors);
-            String unitSignature = _getResolvedUnitSignature(library, unitFile);
-            String unitKey = _getResolvedUnitKey(unitSignature);
-            _byteStore.put(unitKey, unitBytes);
-            if (unitFile == file) {
-              bytes = unitBytes;
-              resolvedUnit = unitResult.unit;
-            }
-            if (disableChangesAndCacheAllResults) {
-              AnalysisResult result = _getAnalysisResultFromBytes(
-                  unitFile, unitSignature, unitBytes,
-                  content: unitFile.content, resolvedUnit: unitResult.unit);
-              _allCachedResults[unitFile.path] = result;
-            }
-          }
-
-          // Return the result, full or partial.
-          _logger.writeln('Computed new analysis result.');
-          AnalysisResult result = _getAnalysisResultFromBytes(
-              file, signature, bytes,
-              content: withUnit ? file.content : null,
-              resolvedUnit: withUnit ? resolvedUnit : null);
-          if (withUnit && _priorityFiles.contains(path)) {
-            _priorityResults[path] = result;
-          }
-          return result;
-        } finally {
-          libraryContext?.dispose();
+        if (!_fsState.getFileForUri(Uri.parse('dart:core')).exists) {
+          return _newMissingDartLibraryResult(file, 'dart:core');
         }
+        if (!_fsState.getFileForUri(Uri.parse('dart:async')).exists) {
+          return _newMissingDartLibraryResult(file, 'dart:async');
+        }
+        var libraryContext = _createLibraryContext(library);
+
+        LibraryAnalyzer analyzer = new LibraryAnalyzer(
+            analysisOptions,
+            declaredVariables,
+            sourceFactory,
+            libraryContext.isLibraryUri,
+            libraryContext.analysisContext,
+            libraryContext.resynthesizer,
+            libraryContext.inheritanceManager,
+            library);
+        Map<FileState, UnitAnalysisResult> results = analyzer.analyze();
+
+        List<int> bytes;
+        CompilationUnit resolvedUnit;
+        for (FileState unitFile in results.keys) {
+          UnitAnalysisResult unitResult = results[unitFile];
+          List<int> unitBytes =
+              _serializeResolvedUnit(unitResult.unit, unitResult.errors);
+          String unitSignature = _getResolvedUnitSignature(library, unitFile);
+          String unitKey = _getResolvedUnitKey(unitSignature);
+          _byteStore.put(unitKey, unitBytes);
+          if (unitFile == file) {
+            bytes = unitBytes;
+            resolvedUnit = unitResult.unit;
+          }
+          if (disableChangesAndCacheAllResults) {
+            AnalysisResult result = _getAnalysisResultFromBytes(
+                unitFile, unitSignature, unitBytes,
+                content: unitFile.content, resolvedUnit: unitResult.unit);
+            _allCachedResults[unitFile.path] = result;
+          }
+        }
+
+        // Return the result, full or partial.
+        _logger.writeln('Computed new analysis result.');
+        AnalysisResult result = _getAnalysisResultFromBytes(
+            file, signature, bytes,
+            content: withUnit ? file.content : null,
+            resolvedUnit: withUnit ? resolvedUnit : null);
+        if (withUnit && _priorityFiles.contains(path)) {
+          _priorityResults[path] = result;
+        }
+        return result;
       } catch (exception, stackTrace) {
         String contextKey =
             _storeExceptionContext(path, library, exception, stackTrace);
@@ -1416,10 +1458,8 @@
     });
   }
 
-  Future<AnalysisDriverUnitIndex> _computeIndex(String path) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    AnalysisResult analysisResult = await _computeAnalysisResult(path,
+  AnalysisDriverUnitIndex _computeIndex(String path) {
+    AnalysisResult analysisResult = _computeAnalysisResult(path,
         withUnit: false, asIsIfPartWithoutLibrary: true);
     return analysisResult._index;
   }
@@ -1442,8 +1482,8 @@
           libraryContext.isLibraryUri,
           libraryContext.analysisContext,
           libraryContext.resynthesizer,
-          library,
-          _resourceProvider);
+          libraryContext.inheritanceManager,
+          library);
       Map<FileState, UnitAnalysisResult> unitResults = analyzer.analyze();
       var resolvedUnits = <ResolvedUnitResult>[];
 
@@ -1452,7 +1492,7 @@
           var unitResult = unitResults[unitFile];
           resolvedUnits.add(
             new AnalysisResult(
-              this,
+              currentSession,
               _sourceFactory,
               unitFile.path,
               unitFile.uri,
@@ -1474,16 +1514,14 @@
         library.path,
         library.uri,
         resolvedUnits.first.libraryElement,
-        libraryContext.analysisContext.typeProvider,
+        libraryContext.typeProvider,
         resolvedUnits,
       );
     });
   }
 
-  Future<UnitElementResult> _computeUnitElement(String path,
-      {bool asIsIfPartWithoutLibrary: false}) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
+  UnitElementResult _computeUnitElement(String path,
+      {bool asIsIfPartWithoutLibrary: false}) {
     FileState file = _fsState.getFileForPath(path);
 
     // Prepare the library - the file itself, or the known library.
@@ -1496,16 +1534,10 @@
       }
     }
 
-    LibraryContext libraryContext = _createLibraryContext(library);
-    try {
-      CompilationUnitElement element =
-          libraryContext.computeUnitElement(library.source, file.source);
-      String signature = library.transitiveSignature;
-      return new UnitElementResult(
-          currentSession, path, file.uri, signature, element);
-    } finally {
-      libraryContext.dispose();
-    }
+    var libraryContext = _createLibraryContext(library);
+    var element = libraryContext.computeUnitElement(library, file);
+    return new UnitElementResultImpl(
+        currentSession, path, file.uri, library.transitiveSignature, element);
   }
 
   String _computeUnitElementSignature(String path,
@@ -1551,17 +1583,28 @@
    * Return the context in which the [library] should be analyzed.
    */
   LibraryContext _createLibraryContext(FileState library) {
-    _testView.numOfCreatedLibraryContexts++;
-    return new LibraryContext.forSingleLibrary(
-        library,
-        _logger,
-        _sdkBundle,
-        _byteStore,
-        _analysisOptions,
-        declaredVariables,
-        _sourceFactory,
-        _externalSummaries,
-        fsState);
+    if (_libraryContext != null) {
+      if (_libraryContext.pack()) {
+        _libraryContext = null;
+      }
+    }
+
+    if (_libraryContext == null) {
+      _libraryContext = new LibraryContext(
+        session: currentSession,
+        logger: _logger,
+        fsState: fsState,
+        byteStore: _byteStore,
+        analysisOptions: _analysisOptions,
+        declaredVariables: declaredVariables,
+        sourceFactory: _sourceFactory,
+        externalSummaries: _externalSummaries,
+        targetLibrary: library,
+      );
+    } else {
+      _libraryContext.load(library);
+    }
+    return _libraryContext;
   }
 
   /**
@@ -1584,10 +1627,12 @@
    */
   void _fillSalt() {
     _unlinkedSalt[0] = DATA_VERSION;
-    _unlinkedSalt.setAll(1, _analysisOptions.unlinkedSignature);
+    _unlinkedSalt[1] = enableIndex ? 1 : 0;
+    _unlinkedSalt.setAll(2, _analysisOptions.unlinkedSignature);
 
     _linkedSalt[0] = DATA_VERSION;
-    _linkedSalt.setAll(1, _analysisOptions.signature);
+    _linkedSalt[1] = enableIndex ? 1 : 0;
+    _linkedSalt.setAll(2, _analysisOptions.signature);
   }
 
   /**
@@ -1601,7 +1646,7 @@
     List<AnalysisError> errors = _getErrorsFromSerialized(file, unit.errors);
     _updateHasErrorOrWarningFlag(file, errors);
     return new AnalysisResult(
-        this,
+        currentSession,
         _sourceFactory,
         file.path,
         file.uri,
@@ -1691,7 +1736,7 @@
       FileState file, String missingUri) {
     // TODO(scheglov) Find a better way to report this.
     return new AnalysisResult(
-        this,
+        currentSession,
         _sourceFactory,
         file.path,
         file.uri,
@@ -1721,26 +1766,13 @@
   }
 
   /**
-   * Runs any asynchronous work that was injected as part of a test using
-   * [AnalysisDriverTestView.workToWaitAfterComputingResult].
-   *
-   * If the test view indicates that there is work to do, performs the work
-   * and returns a [Future] that will be signaled when the work completes.
-   *
-   * This gives tests a reliable way to simulate file changes during analysis.
-   */
-  Future _runTestAsyncWorkDuringAnalysis(String path) {
-    var work = _testView.workToWaitAfterComputingResult;
-    _testView.workToWaitAfterComputingResult = null;
-    return work != null ? work(path) : new Future.value();
-  }
-
-  /**
    * Serialize the given [resolvedUnit] errors and index into bytes.
    */
   List<int> _serializeResolvedUnit(
       CompilationUnit resolvedUnit, List<AnalysisError> errors) {
-    AnalysisDriverUnitIndexBuilder index = indexUnit(resolvedUnit);
+    AnalysisDriverUnitIndexBuilder index = enableIndex
+        ? indexUnit(resolvedUnit)
+        : new AnalysisDriverUnitIndexBuilder();
     return new AnalysisDriverResolvedUnitBuilder(
             errors: errors
                 .map((error) => new AnalysisDriverUnitErrorBuilder(
@@ -1763,7 +1795,7 @@
     }
     try {
       List<AnalysisDriverExceptionFileBuilder> contextFiles = libraryFile
-          .transitiveFiles
+          .libraryFiles
           .map((file) => new AnalysisDriverExceptionFileBuilder(
               path: file.path, content: file.content))
           .toList();
@@ -2092,34 +2124,20 @@
 class AnalysisDriverTestView {
   final AnalysisDriver driver;
 
-  int numOfCreatedLibraryContexts = 0;
-
   int numOfAnalyzedLibraries = 0;
 
-  /**
-   * If non-null, a function that should be executed asynchronously after
-   * the next result is computed.
-   *
-   * This can be used by a test to simulate file changes during analysis.
-   */
-  WorkToWaitAfterComputingResult workToWaitAfterComputingResult;
-
   AnalysisDriverTestView(this.driver);
 
   FileTracker get fileTracker => driver._fileTracker;
 
-  Map<String, AnalysisResult> get priorityResults => driver._priorityResults;
+  Map<String, ResolvedUnitResult> get priorityResults {
+    return driver._priorityResults;
+  }
 
-  Future<SummaryDataStore> getSummaryStore(String libraryPath) async {
+  SummaryDataStore getSummaryStore(String libraryPath) {
     FileState library = driver.fsState.getFileForPath(libraryPath);
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
     LibraryContext libraryContext = driver._createLibraryContext(library);
-    try {
-      return libraryContext.store;
-    } finally {
-      libraryContext.dispose();
-    }
+    return libraryContext.store;
   }
 }
 
@@ -2134,88 +2152,52 @@
  * Every result is independent, and is not guaranteed to be consistent with
  * any previously returned result, even inside of the same library.
  */
-class AnalysisResult extends FileResult implements results.ResolvedUnitResult {
+class AnalysisResult extends ResolvedUnitResultImpl {
   static final _UNCHANGED = new AnalysisResult(
       null, null, null, null, null, null, null, null, null, null, null, null);
-
-  /**
-   * The [AnalysisDriver] that produced this result.
-   */
-  final AnalysisDriver driver;
-
   /**
    * The [SourceFactory] with which the file was analyzed.
    */
   final SourceFactory sourceFactory;
 
   /**
-   * Return `true` if the file exists.
-   */
-  final bool exists;
-
-  @override
-  final String content;
-
-  /**
    * The signature of the result based on the content of the file, and the
    * transitive closure of files imported and exported by the library of
    * the requested file.
    */
   final String _signature;
 
-  @override
-  final CompilationUnit unit;
-
-  @override
-  final List<AnalysisError> errors;
-
   /**
    * The index of the unit.
    */
   final AnalysisDriverUnitIndex _index;
 
   AnalysisResult(
-      this.driver,
+      AnalysisSession session,
       this.sourceFactory,
       String path,
       Uri uri,
-      this.exists,
-      this.content,
+      bool exists,
+      String content,
       LineInfo lineInfo,
       bool isPart,
       this._signature,
-      this.unit,
-      this.errors,
+      CompilationUnit unit,
+      List<AnalysisError> errors,
       this._index)
-      : super(driver?.currentSession, path, uri, lineInfo, isPart);
+      : super(session, path, uri, exists, content, lineInfo, isPart, unit,
+            errors);
 
   @override
   LibraryElement get libraryElement => unit.declaredElement.library;
 
   @override
-  results.ResultState get state =>
-      exists ? results.ResultState.VALID : results.ResultState.NOT_A_FILE;
-
-  @override
   TypeProvider get typeProvider => unit.declaredElement.context.typeProvider;
 
   @override
   TypeSystem get typeSystem => unit.declaredElement.context.typeSystem;
 }
 
-abstract class BaseAnalysisResult implements results.AnalysisResult {
-  @override
-  final AnalysisSession session;
-
-  @override
-  final String path;
-
-  @override
-  final Uri uri;
-
-  BaseAnalysisResult(this.session, this.path, this.uri);
-}
-
 class DriverPerformance {
   static final PerformanceTag driver =
       PerformanceStatistics.analyzer.createChild('driver');
@@ -2242,25 +2224,6 @@
 }
 
 /**
- * The errors in a single file.
- *
- * These results are self-consistent, i.e. [errors] and [lineInfo] correspond
- * to each other. But none of the results is guaranteed to be consistent with
- * the state of the files.
- */
-class ErrorsResult extends FileResult implements results.ErrorsResult {
-  @override
-  final List<AnalysisError> errors;
-
-  ErrorsResult(AnalysisSession session, String path, Uri uri, LineInfo lineInfo,
-      bool isPart, this.errors)
-      : super(session, path, uri, lineInfo, isPart);
-
-  @override
-  results.ResultState get state => results.ResultState.VALID;
-}
-
-/**
  * Exception that happened during analysis.
  */
 class ExceptionResult {
@@ -2288,83 +2251,6 @@
 }
 
 /**
- * The result of computing some cheap information for a single file, when full
- * parsed file is not required, so [ParseResult] is not necessary.
- */
-class FileResult extends BaseAnalysisResult implements results.FileResult {
-  @override
-  final LineInfo lineInfo;
-
-  @override
-  final bool isPart;
-
-  FileResult(
-      AnalysisSession session, String path, Uri uri, this.lineInfo, this.isPart)
-      : super(session, path, uri);
-
-  @override
-  results.ResultState get state => results.ResultState.VALID;
-}
-
-/**
- * The result of parsing of a single file.
- *
- * These results are self-consistent, i.e. [content], [lineInfo], the
- * parsed [unit] correspond to each other. But none of the results is
- * guaranteed to be consistent with the state of the files.
- */
-class ParseResult extends FileResult implements results.ParseResult {
-  @override
-  final String content;
-
-  @override
-  final CompilationUnit unit;
-
-  @override
-  final List<AnalysisError> errors;
-
-  ParseResult(AnalysisSession session, String path, Uri uri, this.content,
-      LineInfo lineInfo, bool isPart, this.unit, this.errors)
-      : super(session, path, uri, lineInfo, isPart);
-
-  @override
-  results.ResultState get state => results.ResultState.VALID;
-}
-
-/**
- * The result with the [CompilationUnitElement] of a single file.
- *
- * These results are self-consistent, i.e. all elements and types accessible
- * through [element], including defined in other files, correspond to each
- * other. But none of the results is guaranteed to be consistent with the state
- * of the files.
- *
- * Every result is independent, and is not guaranteed to be consistent with
- * any previously returned result, even inside of the same library.
- */
-class UnitElementResult extends BaseAnalysisResult
-    implements results.UnitElementResult {
-  /**
-   * The signature of the [element] is based the APIs of the files of the
-   * library (including the file itself) of the requested file and the
-   * transitive closure of files imported and exported by the library.
-   */
-  final String signature;
-
-  /**
-   * The element of the file.
-   */
-  final CompilationUnitElement element;
-
-  UnitElementResult(AnalysisSession session, String path, Uri uri,
-      this.signature, this.element)
-      : super(session, path, uri);
-
-  @override
-  results.ResultState get state => results.ResultState.VALID;
-}
-
-/**
  * Task that discovers all files that are available to the driver, and makes
  * them known.
  */
diff --git a/pkg/analyzer/lib/src/dart/analysis/driver_based_analysis_context.dart b/pkg/analyzer/lib/src/dart/analysis/driver_based_analysis_context.dart
index f96d909..6d35e0e 100644
--- a/pkg/analyzer/lib/src/dart/analysis/driver_based_analysis_context.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/driver_based_analysis_context.dart
@@ -6,7 +6,7 @@
 import 'package:analyzer/dart/analysis/context_root.dart';
 import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart' hide AnalysisResult;
+import 'package:analyzer/src/dart/analysis/driver.dart' show AnalysisDriver;
 import 'package:analyzer/src/generated/engine.dart' show AnalysisOptions;
 
 /**
@@ -31,7 +31,9 @@
    * to access the file system and that is based on the given analysis [driver].
    */
   DriverBasedAnalysisContext(
-      this.resourceProvider, this.contextRoot, this.driver);
+      this.resourceProvider, this.contextRoot, this.driver) {
+    driver.analysisContext = this;
+  }
 
   @override
   AnalysisOptions get analysisOptions => driver.analysisOptions;
diff --git a/pkg/analyzer/lib/src/dart/analysis/experiments.dart b/pkg/analyzer/lib/src/dart/analysis/experiments.dart
new file mode 100644
index 0000000..d0993c6
--- /dev/null
+++ b/pkg/analyzer/lib/src/dart/analysis/experiments.dart
@@ -0,0 +1,36 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analyzer/src/generated/engine.dart';
+
+/// A representation of the set of experiments that are active and whether they
+/// are enabled.
+class Experiments {
+  /// The name of the experiment to extend which expressions are constant
+  /// expressions.
+  static const String constantUpdate2018Name = 'constant-update-2018';
+
+  /// The name of the experiment to support set literals.
+  static const String setLiteralName = 'set-literal';
+
+  /// A list containing the names of active experiments.
+  static const List<String> activeExperimentNames = <String>[
+    constantUpdate2018Name,
+    setLiteralName,
+  ];
+
+  /// A list containing the names of the experiments that have been enabled.
+  final List<String> _enabled;
+
+  /// Initialize a newly created set of experiments from the given set of
+  /// analysis [options].
+  Experiments(AnalysisOptions options) : _enabled = options.enabledExperiments;
+
+  /// Return `true` if the experiment named 'constant-update-2018' has been
+  /// enabled.
+  bool get constantUpdate2018 => _enabled.contains(constantUpdate2018Name);
+
+  /// Return `true` if the experiment named 'set-literal' has been enabled.
+  bool get setLiteral => _enabled.contains(setLiteralName);
+}
diff --git a/pkg/analyzer/lib/src/dart/analysis/file_state.dart b/pkg/analyzer/lib/src/dart/analysis/file_state.dart
index e627abb..2ea7c4c 100644
--- a/pkg/analyzer/lib/src/dart/analysis/file_state.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/file_state.dart
@@ -12,6 +12,8 @@
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/defined_names.dart';
+import 'package:analyzer/src/dart/analysis/experiments.dart';
+import 'package:analyzer/src/dart/analysis/library_graph.dart';
 import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:analyzer/src/dart/analysis/referenced_names.dart';
 import 'package:analyzer/src/dart/analysis/top_level_declaration.dart';
@@ -125,8 +127,11 @@
   List<NameFilter> _exportFilters;
 
   Set<FileState> _directReferencedFiles;
-  Set<FileState> _transitiveFiles;
+  Set<FileState> _directReferencedLibraries;
+
+  LibraryCycle _libraryCycle;
   String _transitiveSignature;
+  String _transitiveSignatureLinked;
 
   Map<String, TopLevelDeclaration> _topLevelDeclarations;
   Map<String, TopLevelDeclaration> _exportedTopLevelDeclarations;
@@ -147,6 +152,7 @@
         source = null,
         _exists = true {
     _apiSignature = new Uint8List(16);
+    _libraryCycle = new LibraryCycle.external();
   }
 
   /**
@@ -187,6 +193,11 @@
   Set<FileState> get directReferencedFiles => _directReferencedFiles;
 
   /**
+   * Return the set of all directly referenced libraries - imported or exported.
+   */
+  Set<FileState> get directReferencedLibraries => _directReferencedLibraries;
+
+  /**
    * Return `true` if the file exists.
    */
   bool get exists => _exists;
@@ -213,6 +224,8 @@
    */
   List<FileState> get importedFiles => _importedFiles;
 
+  LibraryCycle get internal_libraryCycle => _libraryCycle;
+
   /**
    * Return `true` if the file is a stub created for a library in the provided
    * external summary store.
@@ -254,6 +267,23 @@
     }
   }
 
+  /// Return the [LibraryCycle] this file belongs to, even if it consists of
+  /// just this file.  If the library cycle is not known yet, compute it.
+  LibraryCycle get libraryCycle {
+    if (isPart) {
+      var library = this.library;
+      if (library != null) {
+        return library.libraryCycle;
+      }
+    }
+
+    if (_libraryCycle == null) {
+      computeLibraryCycle(_fsState._linkedSalt, this);
+    }
+
+    return _libraryCycle;
+  }
+
   /**
    * The list of files files that this library consists of, i.e. this library
    * file itself and its [partedFiles].
@@ -331,39 +361,26 @@
   }
 
   /**
-   * Return the set of transitive files - the file itself and all of the
-   * directly or indirectly referenced files.
+   * Return the signature of the file, based on API signatures of the
+   * transitive closure of imported / exported files.
    */
-  Set<FileState> get transitiveFiles {
-    if (_transitiveFiles == null) {
-      _transitiveFiles = new Set<FileState>();
-
-      void appendReferenced(FileState file) {
-        if (_transitiveFiles.add(file)) {
-          file._directReferencedFiles?.forEach(appendReferenced);
-        }
+  String get transitiveSignature {
+    if (isPart) {
+      var library = this.library;
+      if (library != null) {
+        return library.transitiveSignature;
       }
-
-      appendReferenced(this);
     }
-    return _transitiveFiles;
+
+    this.libraryCycle; // sets _transitiveSignature
+    return _transitiveSignature;
   }
 
   /**
-   * Return the signature of the file, based on the [transitiveFiles].
+   * The value `transitiveSignature.linked` is used often, so we cache it.
    */
-  String get transitiveSignature {
-    if (_transitiveSignature == null) {
-      ApiSignature signature = new ApiSignature();
-      signature.addUint32List(_fsState._linkedSalt);
-      signature.addInt(transitiveFiles.length);
-      transitiveFiles
-          .map((file) => file.apiSignature)
-          .forEach(signature.addBytes);
-      signature.addString(uri.toString());
-      _transitiveSignature = signature.toHex();
-    }
-    return _transitiveSignature;
+  String get transitiveSignatureLinked {
+    return _transitiveSignatureLinked ??= '$transitiveSignature.linked';
   }
 
   /**
@@ -381,6 +398,17 @@
     return other is FileState && other.uri == uri;
   }
 
+  void internal_setLibraryCycle(LibraryCycle cycle, String signature) {
+    if (cycle == null) {
+      _libraryCycle = null;
+      _transitiveSignature = null;
+      _transitiveSignatureLinked = null;
+    } else {
+      _libraryCycle = cycle;
+      _transitiveSignature = signature;
+    }
+  }
+
   /**
    * Return a new parsed unresolved [CompilationUnit].
    *
@@ -461,14 +489,11 @@
     _apiSignature = newApiSignature;
 
     // The API signature changed.
-    //   Flush transitive signatures of affected files.
+    //   Flush affected library cycles.
     //   Flush exported top-level declarations of all files.
     if (apiSignatureChanged) {
+      _libraryCycle?.invalidate();
       for (FileState file in _fsState._uriToFile.values) {
-        if (file._transitiveFiles != null &&
-            file._transitiveFiles.contains(this)) {
-          file._transitiveSignature = null;
-        }
         file._exportedTopLevelDeclarations = null;
       }
     }
@@ -508,26 +533,13 @@
     _libraryFiles = [this]..addAll(_partedFiles);
 
     // Compute referenced files.
-    Set<FileState> oldDirectReferencedFiles = _directReferencedFiles;
     _directReferencedFiles = new Set<FileState>()
       ..addAll(_importedFiles)
       ..addAll(_exportedFiles)
       ..addAll(_partedFiles);
-
-    // If the set of directly referenced files of this file is changed,
-    // then the transitive sets of files that include this file are also
-    // changed. Reset these transitive sets.
-    if (oldDirectReferencedFiles != null) {
-      if (_directReferencedFiles.length != oldDirectReferencedFiles.length ||
-          !_directReferencedFiles.containsAll(oldDirectReferencedFiles)) {
-        for (FileState file in _fsState._uriToFile.values) {
-          if (file._transitiveFiles != null &&
-              file._transitiveFiles.contains(this)) {
-            file._transitiveFiles = null;
-          }
-        }
-      }
-    }
+    _directReferencedLibraries = Set<FileState>()
+      ..addAll(_importedFiles)
+      ..addAll(_exportedFiles);
 
     // Update mapping from subtyped names to files.
     for (var name in _driverUnlinkedUnit.subtypedNames) {
@@ -659,8 +671,10 @@
     }
 
     AnalysisOptions analysisOptions = _fsState._analysisOptions;
+    Experiments experiments = new Experiments(analysisOptions);
     CharSequenceReader reader = new CharSequenceReader(content);
     Scanner scanner = new Scanner(source, reader, errorListener);
+    scanner.enableGtGtGt = experiments.constantUpdate2018;
     Token token = PerformanceStatistics.scan.makeCurrentWhile(() {
       return scanner.tokenize();
     });
@@ -669,6 +683,7 @@
     bool useFasta = analysisOptions.useFastaParser;
     Parser parser = new Parser(source, errorListener, useFasta: useFasta);
     parser.enableOptionalNewAndConst = true;
+    parser.enableSetLiterals = experiments.setLiteral;
     CompilationUnit unit = parser.parseCompilationUnit(token);
     unit.lineInfo = lineInfo;
 
@@ -714,7 +729,7 @@
  */
 class FileSystemState {
   final PerformanceLog _logger;
-  final ResourceProvider resourceProvider;
+  final ResourceProvider _resourceProvider;
   final ByteStore _byteStore;
   final FileContentOverlay _contentOverlay;
   final SourceFactory _sourceFactory;
@@ -795,7 +810,7 @@
     this._logger,
     this._byteStore,
     this._contentOverlay,
-    this.resourceProvider,
+    this._resourceProvider,
     this._sourceFactory,
     this._analysisOptions,
     this._unlinkedSalt,
@@ -803,7 +818,7 @@
     this.externalSummaries,
   }) {
     _fileContentCache = _FileContentCache.getInstance(
-      resourceProvider,
+      _resourceProvider,
       _contentOverlay,
     );
     _testView = new FileSystemStateTestView(this);
@@ -833,7 +848,7 @@
   FileState getFileForPath(String path) {
     FileState file = _pathToCanonicalFile[path];
     if (file == null) {
-      File resource = resourceProvider.getFile(path);
+      File resource = _resourceProvider.getFile(path);
       Source fileSource = resource.createSource();
       Uri uri = _sourceFactory.restoreUri(fileSource);
       // Try to get the existing instance.
@@ -884,7 +899,7 @@
       }
 
       String path = uriSource.fullName;
-      File resource = resourceProvider.getFile(path);
+      File resource = _resourceProvider.getFile(path);
       FileSource source = new FileSource(resource, uri);
       file = new FileState._(this, path, uri, source);
       _uriToFile[uri] = file;
@@ -927,7 +942,7 @@
   bool hasUri(String path) {
     bool flag = _hasUriForPath[path];
     if (flag == null) {
-      File resource = resourceProvider.getFile(path);
+      File resource = _resourceProvider.getFile(path);
       Source fileSource = resource.createSource();
       Uri uri = _sourceFactory.restoreUri(fileSource);
       Source uriSource = _sourceFactory.forUri2(uri);
@@ -978,15 +993,9 @@
 
   FileSystemStateTestView(this.state);
 
-  Set<FileState> get filesWithoutTransitiveFiles {
+  Set<FileState> get filesWithoutLibraryCycle {
     return state._uriToFile.values
-        .where((f) => f._transitiveFiles == null)
-        .toSet();
-  }
-
-  Set<FileState> get filesWithoutTransitiveSignature {
-    return state._uriToFile.values
-        .where((f) => f._transitiveSignature == null)
+        .where((f) => f._libraryCycle == null)
         .toSet();
   }
 
diff --git a/pkg/analyzer/lib/src/dart/analysis/library_analyzer.dart b/pkg/analyzer/lib/src/dart/analysis/library_analyzer.dart
index ed45474..c11275c 100644
--- a/pkg/analyzer/lib/src/dart/analysis/library_analyzer.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/library_analyzer.dart
@@ -8,8 +8,6 @@
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/error/listener.dart';
-import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/context/context.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
 import 'package:analyzer/src/dart/ast/ast.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
@@ -27,7 +25,6 @@
 import 'package:analyzer/src/generated/error_verifier.dart';
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer/src/hint/sdk_constraint_extractor.dart';
 import 'package:analyzer/src/hint/sdk_constraint_verifier.dart';
 import 'package:analyzer/src/lint/linter.dart';
 import 'package:analyzer/src/lint/linter_visitor.dart';
@@ -44,37 +41,31 @@
   /// [_versionConstraintFromPubspec] when the previous initialization attempt
   /// failed.
   static final VersionRange noSpecifiedRange = new VersionRange();
-
   final AnalysisOptionsImpl _analysisOptions;
   final DeclaredVariables _declaredVariables;
   final SourceFactory _sourceFactory;
   final FileState _library;
-  final ResourceProvider resourceProvider;
-  final InheritanceManager2 _inheritance;
 
+  final InheritanceManager2 _inheritance;
   final bool Function(Uri) _isLibraryUri;
-  final AnalysisContextImpl _context;
+  final AnalysisContext _context;
   final ElementResynthesizer _resynthesizer;
   final TypeProvider _typeProvider;
+
   final TypeSystem _typeSystem;
-
   LibraryElement _libraryElement;
+
   LibraryScope _libraryScope;
-
   final Map<FileState, LineInfo> _fileToLineInfo = {};
-  final Map<FileState, IgnoreInfo> _fileToIgnoreInfo = {};
 
+  final Map<FileState, IgnoreInfo> _fileToIgnoreInfo = {};
   final Map<FileState, RecordingErrorListener> _errorListeners = {};
   final Map<FileState, ErrorReporter> _errorReporters = {};
   final List<UsedImportedElements> _usedImportedElementsList = [];
   final List<UsedLocalElements> _usedLocalElementsList = [];
   final Map<FileState, List<PendingError>> _fileToPendingErrors = {};
-  final Set<ConstantEvaluationTarget> _constants = new Set();
 
-  /// The cached version range for the SDK specified in `pubspec.yaml`, or
-  /// [noSpecifiedRange] if there is no `pubspec.yaml` or if it does not contain
-  /// an SDK range. Use [versionConstraintFromPubspec] to access this field.
-  VersionConstraint _versionConstraintFromPubspec;
+  final Set<ConstantEvaluationTarget> _constants = new Set();
 
   LibraryAnalyzer(
       this._analysisOptions,
@@ -83,10 +74,9 @@
       this._isLibraryUri,
       this._context,
       this._resynthesizer,
-      this._library,
-      this.resourceProvider)
-      : _inheritance = new InheritanceManager2(_context.typeSystem),
-        _typeProvider = _context.typeProvider,
+      this._inheritance,
+      this._library)
+      : _typeProvider = _context.typeProvider,
         _typeSystem = _context.typeSystem;
 
   /**
@@ -114,60 +104,56 @@
       _resolveUriBasedDirectives(file, unit);
     });
 
-    try {
-      _libraryElement = _resynthesizer
-          .getElement(new ElementLocationImpl.con3([_library.uriStr]));
-      _libraryScope = new LibraryScope(_libraryElement);
+    _libraryElement = _resynthesizer
+        .getElement(new ElementLocationImpl.con3([_library.uriStr]));
+    _libraryScope = new LibraryScope(_libraryElement);
 
-      _resolveDirectives(units);
+    _resolveDirectives(units);
 
+    units.forEach((file, unit) {
+      _resolveFile(file, unit);
+      _computePendingMissingRequiredParameters(file, unit);
+    });
+
+    units.values.forEach(_findConstants);
+    _computeConstants();
+
+    PerformanceStatistics.errors.makeCurrentWhile(() {
       units.forEach((file, unit) {
-        _resolveFile(file, unit);
-        _computePendingMissingRequiredParameters(file, unit);
+        _computeVerifyErrors(file, unit);
       });
+    });
 
-      units.values.forEach(_findConstants);
-      _computeConstants();
-
-      PerformanceStatistics.errors.makeCurrentWhile(() {
+    if (_analysisOptions.hint) {
+      PerformanceStatistics.hints.makeCurrentWhile(() {
         units.forEach((file, unit) {
-          _computeVerifyErrors(file, unit);
-        });
-      });
-
-      if (_analysisOptions.hint) {
-        PerformanceStatistics.hints.makeCurrentWhile(() {
-          units.forEach((file, unit) {
-            {
-              var visitor = new GatherUsedLocalElementsVisitor(_libraryElement);
-              unit.accept(visitor);
-              _usedLocalElementsList.add(visitor.usedElements);
-            }
-            {
-              var visitor =
-                  new GatherUsedImportedElementsVisitor(_libraryElement);
-              unit.accept(visitor);
-              _usedImportedElementsList.add(visitor.usedElements);
-            }
-          });
-          units.forEach((file, unit) {
-            _computeHints(file, unit);
-          });
-        });
-      }
-
-      if (_analysisOptions.lint) {
-        PerformanceStatistics.lints.makeCurrentWhile(() {
-          var allUnits = _library.libraryFiles
-              .map((file) => LinterContextUnit(file.content, units[file]))
-              .toList();
-          for (int i = 0; i < allUnits.length; i++) {
-            _computeLints(_library.libraryFiles[i], allUnits[i], allUnits);
+          {
+            var visitor = new GatherUsedLocalElementsVisitor(_libraryElement);
+            unit.accept(visitor);
+            _usedLocalElementsList.add(visitor.usedElements);
+          }
+          {
+            var visitor =
+                new GatherUsedImportedElementsVisitor(_libraryElement);
+            unit.accept(visitor);
+            _usedImportedElementsList.add(visitor.usedElements);
           }
         });
-      }
-    } finally {
-      _context.dispose();
+        units.forEach((file, unit) {
+          _computeHints(file, unit);
+        });
+      });
+    }
+
+    if (_analysisOptions.lint) {
+      PerformanceStatistics.lints.makeCurrentWhile(() {
+        var allUnits = _library.libraryFiles
+            .map((file) => LinterContextUnit(file.content, units[file]))
+            .toList();
+        for (int i = 0; i < allUnits.length; i++) {
+          _computeLints(_library.libraryFiles[i], allUnits[i], allUnits);
+        }
+      });
     }
 
     // Return full results.
@@ -180,20 +166,6 @@
     return results;
   }
 
-  VersionConstraint versionConstraintFromPubspec() {
-    if (_versionConstraintFromPubspec == null) {
-      _versionConstraintFromPubspec = noSpecifiedRange;
-      File pubspecFile = _findPubspecFile(_library);
-      if (pubspecFile != null) {
-        SdkConstraintExtractor extractor =
-            new SdkConstraintExtractor(pubspecFile);
-        _versionConstraintFromPubspec =
-            extractor.constraint() ?? noSpecifiedRange;
-      }
-    }
-    return _versionConstraintFromPubspec;
-  }
-
   void _computeConstantErrors(
       ErrorReporter errorReporter, CompilationUnit unit) {
     ConstantVerifier constantVerifier = new ConstantVerifier(
@@ -268,14 +240,15 @@
           new UnusedLocalElementsVerifier(errorListener, usedElements);
       unit.accept(visitor);
     }
+
     //
-    // Find code that uses features from an SDK that is newer than the minimum
-    // version allowed in the pubspec.yaml file.
+    // Find code that uses features from an SDK version that does not satisfy
+    // the SDK constraints specified in analysis options.
     //
-    VersionRange versionRange = versionConstraintFromPubspec();
-    if (versionRange != noSpecifiedRange) {
+    var sdkVersionConstraint = _analysisOptions.sdkVersionConstraint;
+    if (sdkVersionConstraint != null) {
       SdkConstraintVerifier verifier = new SdkConstraintVerifier(
-          errorReporter, _libraryElement, _typeProvider, versionRange);
+          errorReporter, _libraryElement, _typeProvider, sdkVersionConstraint);
       unit.accept(verifier);
     }
   }
@@ -295,11 +268,8 @@
         allUnits, currentUnit, _declaredVariables, _typeProvider, _typeSystem);
     for (Linter linter in _analysisOptions.lintRules) {
       linter.reporter = errorReporter;
-      if (linter is NodeLintRuleWithContext) {
-        (linter as NodeLintRuleWithContext)
-            .registerNodeProcessors(nodeRegistry, context);
-      } else if (linter is NodeLintRule) {
-        (linter as NodeLintRule).registerNodeProcessors(nodeRegistry);
+      if (linter is NodeLintRule) {
+        (linter as NodeLintRule).registerNodeProcessors(nodeRegistry, context);
       } else {
         AstVisitor visitor = linter.getVisitor();
         if (visitor != null) {
@@ -412,18 +382,6 @@
     _constants.addAll(dependenciesFinder.dependencies);
   }
 
-  File _findPubspecFile(FileState file) {
-    Folder folder = resourceProvider?.getFile(file.path)?.parent;
-    while (folder != null) {
-      File pubspecFile = folder.getChildAssumingFile('pubspec.yaml');
-      if (pubspecFile.exists) {
-        return pubspecFile;
-      }
-      folder = folder.parent;
-    }
-    return null;
-  }
-
   RecordingErrorListener _getErrorListener(FileState file) =>
       _errorListeners.putIfAbsent(file, () => new RecordingErrorListener());
 
@@ -459,6 +417,15 @@
     return null;
   }
 
+  bool _isExistingSource(Source source) {
+    for (var file in _library.directReferencedFiles) {
+      if (file.uri == source.uri) {
+        return file.exists;
+      }
+    }
+    return false;
+  }
+
   /**
    * Return `true` if the given [source] is a library.
    */
@@ -554,7 +521,7 @@
         // Validate that the part contains a part-of directive with the same
         // name or uri as the library.
         //
-        if (_context.exists(partSource)) {
+        if (_isExistingSource(partSource)) {
           _NameOrSource nameOrSource = _getPartLibraryNameOrUri(
               partSource, partUnit, directivesToResolve);
           if (nameOrSource == null) {
@@ -702,7 +669,7 @@
       FileState file, UriBasedDirectiveImpl directive) {
     Source source = directive.uriSource;
     if (source != null) {
-      if (_context.exists(source)) {
+      if (_isExistingSource(source)) {
         return;
       }
     } else {
diff --git a/pkg/analyzer/lib/src/dart/analysis/library_context.dart b/pkg/analyzer/lib/src/dart/analysis/library_context.dart
index 3a36e2b..44f61a4 100644
--- a/pkg/analyzer/lib/src/dart/analysis/library_context.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/library_context.dart
@@ -3,6 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analyzer/dart/analysis/declared_variables.dart';
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/element/element.dart'
     show CompilationUnitElement, LibraryElement;
 import 'package:analyzer/src/context/context.dart';
@@ -10,161 +11,94 @@
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
 import 'package:analyzer/src/dart/analysis/performance_logger.dart';
+import 'package:analyzer/src/dart/analysis/restricted_analysis_context.dart';
 import 'package:analyzer/src/dart/element/element.dart';
-import 'package:analyzer/src/dart/element/handle.dart';
+import 'package:analyzer/src/dart/element/inheritance_manager2.dart';
 import 'package:analyzer/src/generated/engine.dart'
-    show AnalysisContext, AnalysisEngine, AnalysisOptions;
+    show AnalysisContext, AnalysisOptions;
+import 'package:analyzer/src/generated/resolver.dart' show TypeProvider;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/summary/format.dart';
 import 'package:analyzer/src/summary/idl.dart';
 import 'package:analyzer/src/summary/link.dart';
 import 'package:analyzer/src/summary/package_bundle_reader.dart';
+import 'package:analyzer/src/summary/resynthesize.dart';
+import 'package:meta/meta.dart';
 
 /**
  * Context information necessary to analyze one or more libraries within an
  * [AnalysisDriver].
  *
  * Currently this is implemented as a wrapper around [AnalysisContext].
- * TODO(paulberry): make a front end API that this can make use of instead.
  */
 class LibraryContext {
-  final SummaryDataStore store;
+  static const _maxLinkedDataInBytes = 64 * 1024 * 1024;
 
-  /**
-   * The [AnalysisContext] which is used to do the analysis.
-   */
-  final AnalysisContext analysisContext;
+  final PerformanceLog logger;
+  final ByteStore byteStore;
+  final SummaryDataStore store = new SummaryDataStore([]);
 
-  /**
-   * The resynthesizer that resynthesizes elements in [analysisContext].
-   */
-  final ElementResynthesizer resynthesizer;
+  /// The size of the linked data that is loaded by this context.
+  /// When it reaches [_maxLinkedDataInBytes] the whole context is thrown away.
+  /// We use it as an approximation for the heap size of elements.
+  int _linkedDataInBytes = 0;
 
-  /**
-   * Create a [LibraryContext] which is prepared to analyze [targetLibrary].
-   */
-  factory LibraryContext.forSingleLibrary(
-      FileState targetLibrary,
-      PerformanceLog logger,
-      PackageBundle sdkBundle,
-      ByteStore byteStore,
-      AnalysisOptions options,
-      DeclaredVariables declaredVariables,
-      SourceFactory sourceFactory,
-      SummaryDataStore externalSummaries,
-      FileSystemState fsState) {
-    return logger.run('Create library context', () {
-      Map<String, FileState> libraries = <String, FileState>{};
-      SummaryDataStore store = new SummaryDataStore(const <String>[]);
+  AnalysisContextImpl analysisContext;
+  SummaryResynthesizer resynthesizer;
+  InheritanceManager2 inheritanceManager;
 
-      if (externalSummaries != null) {
-        store.addStore(externalSummaries);
-      }
+  LibraryContext({
+    @required AnalysisSession session,
+    @required PerformanceLog logger,
+    @required ByteStore byteStore,
+    @required FileSystemState fsState,
+    @required AnalysisOptions analysisOptions,
+    @required DeclaredVariables declaredVariables,
+    @required SourceFactory sourceFactory,
+    @required SummaryDataStore externalSummaries,
+    @required FileState targetLibrary,
+  })  : this.logger = logger,
+        this.byteStore = byteStore {
+    if (externalSummaries != null) {
+      store.addStore(externalSummaries);
+    }
 
-      if (sdkBundle != null) {
-        store.addBundle(null, sdkBundle);
-      }
+    // Fill the store with summaries required for the initial library.
+    load(targetLibrary);
 
-      void appendLibraryFiles(FileState library) {
-        if (!libraries.containsKey(library.uriStr)) {
-          // Serve 'dart:' URIs from the SDK bundle.
-          if (sdkBundle != null && library.uri.scheme == 'dart') {
-            return;
-          }
+    analysisContext = new RestrictedAnalysisContext(
+      analysisOptions,
+      declaredVariables,
+      sourceFactory,
+    );
 
-          if (library.isInExternalSummaries) {
-            return;
-          }
+    var provider = new InputPackagesResultProvider(analysisContext, store,
+        session: session);
+    resynthesizer = provider.resynthesizer;
 
-          libraries[library.uriStr] = library;
-
-          // Append library units.
-          for (FileState part in library.libraryFiles) {
-            store.addUnlinkedUnit(part.uriStr, part.unlinked);
-          }
-
-          // Append referenced libraries.
-          library.importedFiles.forEach(appendLibraryFiles);
-          library.exportedFiles.forEach(appendLibraryFiles);
-        }
-      }
-
-      logger.run('Append library files', () {
-        appendLibraryFiles(targetLibrary);
-      });
-
-      var libraryUrisToLink = new Set<String>();
-      var libraryFilesToLink = new Set<FileState>();
-      logger.run('Load linked bundles', () {
-        for (FileState library in libraries.values) {
-          if (library.exists || library == targetLibrary) {
-            String key = '${library.transitiveSignature}.linked';
-            List<int> bytes = byteStore.get(key);
-            if (bytes != null) {
-              LinkedLibrary linked = new LinkedLibrary.fromBuffer(bytes);
-              store.addLinkedLibrary(library.uriStr, linked);
-            } else {
-              libraryUrisToLink.add(library.uriStr);
-              libraryFilesToLink.add(library);
-            }
-          }
-        }
-        int numOfLoaded = libraries.length - libraryUrisToLink.length;
-        logger.writeln('Loaded $numOfLoaded linked bundles.');
-      });
-
-      Map<String, LinkedLibraryBuilder> linkedLibraries = {};
-      logger.run('Link libraries', () {
-        linkedLibraries = link(libraryUrisToLink, (String uri) {
-          LinkedLibrary linkedLibrary = store.linkedMap[uri];
-          return linkedLibrary;
-        }, (String uri) {
-          UnlinkedUnit unlinkedUnit = store.unlinkedMap[uri];
-          return unlinkedUnit;
-        }, (_) => null);
-        logger.writeln('Linked ${linkedLibraries.length} libraries.');
-      });
-
-      for (String uri in linkedLibraries.keys) {
-        LinkedLibraryBuilder linkedBuilder = linkedLibraries[uri];
-        FileState library = libraries[uri];
-        String key = '${library.transitiveSignature}.linked';
-        List<int> bytes = linkedBuilder.toBuffer();
-        LinkedLibrary linked = new LinkedLibrary.fromBuffer(bytes);
-        store.addLinkedLibrary(uri, linked);
-        byteStore.put(key, bytes);
-      }
-
-      var resynthesizingContext = _createResynthesizingContext(
-          options, declaredVariables, sourceFactory, store);
-      resynthesizingContext.context.contentCache =
-          new _ContentCacheWrapper(fsState);
-
-      return new LibraryContext._(store, resynthesizingContext.context,
-          resynthesizingContext.resynthesizer);
-    });
+    inheritanceManager = new InheritanceManager2(analysisContext.typeSystem);
   }
 
-  LibraryContext._(this.store, this.analysisContext, this.resynthesizer);
+  /**
+   * The type provider used in this context.
+   */
+  TypeProvider get typeProvider => analysisContext.typeProvider;
 
   /**
    * Computes a [CompilationUnitElement] for the given library/unit pair.
    */
-  CompilationUnitElement computeUnitElement(
-      Source librarySource, Source unitSource) {
-    String libraryUri = librarySource.uri.toString();
-    String unitUri = unitSource.uri.toString();
-    return resynthesizer.getElement(
-        new ElementLocationImpl.con3(<String>[libraryUri, unitUri]));
+  CompilationUnitElement computeUnitElement(FileState library, FileState unit) {
+    return resynthesizer.getElement(new ElementLocationImpl.con3(<String>[
+      library.uriStr,
+      unit.uriStr,
+    ]));
   }
 
   /**
-   * Cleans up any persistent resources used by this [LibraryContext].
-   *
-   * Should be called once the [LibraryContext] is no longer needed.
+   * Get the [LibraryElement] for the given library.
    */
-  void dispose() {
-    analysisContext.dispose();
+  LibraryElement getLibraryElement(FileState library) {
+    return resynthesizer.getLibraryElement(library.uriStr);
   }
 
   /**
@@ -175,99 +109,96 @@
     return store.unlinkedMap[uriStr]?.isPartOf == false;
   }
 
-  /**
-   * Resynthesize the [LibraryElement] from the given [store].
-   */
-  static LibraryElement resynthesizeLibraryElement(
-      AnalysisOptions analysisOptions,
-      DeclaredVariables declaredVariables,
-      SourceFactory sourceFactory,
-      SummaryDataStore store,
-      String uri) {
-    var resynthesizingContext = _createResynthesizingContext(
-        analysisOptions, declaredVariables, sourceFactory, store);
-    try {
-      return resynthesizingContext.resynthesizer
-          .getElement(new ElementLocationImpl.con3([uri]));
-    } finally {
-      resynthesizingContext.context.dispose();
+  /// Load data required to access elements of the given [targetLibrary].
+  void load(FileState targetLibrary) {
+    // The library is already a part of the context, nothing to do.
+    if (store.linkedMap.containsKey(targetLibrary.uriStr)) {
+      return;
+    }
+
+    var libraries = <String, FileState>{};
+    void appendLibraryFiles(FileState library) {
+      // Stop if this library is already a part of the context.
+      // Libraries from external summaries are also covered by this.
+      if (store.linkedMap.containsKey(library.uriStr)) {
+        return;
+      }
+
+      // Stop if we have already scheduled loading of this library.
+      if (libraries.containsKey(library.uriStr)) {
+        return;
+      }
+
+      // Schedule the library for loading or linking.
+      libraries[library.uriStr] = library;
+
+      // Append library units.
+      for (FileState part in library.libraryFiles) {
+        store.addUnlinkedUnit(part.uriStr, part.unlinked);
+      }
+
+      // Append referenced libraries.
+      library.importedFiles.forEach(appendLibraryFiles);
+      library.exportedFiles.forEach(appendLibraryFiles);
+    }
+
+    logger.run('Append library files', () {
+      appendLibraryFiles(targetLibrary);
+    });
+
+    var libraryUrisToLink = new Set<String>();
+    logger.run('Load linked bundles', () {
+      for (FileState library in libraries.values) {
+        if (library.exists || library == targetLibrary) {
+          String key = library.transitiveSignatureLinked;
+          List<int> bytes = byteStore.get(key);
+          if (bytes != null) {
+            LinkedLibrary linked = new LinkedLibrary.fromBuffer(bytes);
+            store.addLinkedLibrary(library.uriStr, linked);
+            _linkedDataInBytes += bytes.length;
+          } else {
+            libraryUrisToLink.add(library.uriStr);
+          }
+        }
+      }
+      int numOfLoaded = libraries.length - libraryUrisToLink.length;
+      logger.writeln('Loaded $numOfLoaded linked bundles.');
+    });
+
+    var linkedLibraries = <String, LinkedLibraryBuilder>{};
+    logger.run('Link libraries', () {
+      linkedLibraries = link(libraryUrisToLink, (String uri) {
+        LinkedLibrary linkedLibrary = store.linkedMap[uri];
+        return linkedLibrary;
+      }, (String uri) {
+        UnlinkedUnit unlinkedUnit = store.unlinkedMap[uri];
+        return unlinkedUnit;
+      }, (_) => null);
+      logger.writeln('Linked ${linkedLibraries.length} libraries.');
+    });
+
+    // Store freshly linked libraries into the byte store.
+    // Append them to the context.
+    for (String uri in linkedLibraries.keys) {
+      FileState library = libraries[uri];
+      String key = library.transitiveSignatureLinked;
+
+      LinkedLibraryBuilder linkedBuilder = linkedLibraries[uri];
+      List<int> bytes = linkedBuilder.toBuffer();
+      byteStore.put(key, bytes);
+
+      LinkedLibrary linked = new LinkedLibrary.fromBuffer(bytes);
+      store.addLinkedLibrary(uri, linked);
+      _linkedDataInBytes += bytes.length;
     }
   }
 
-  static _ResynthesizingAnalysisContext _createResynthesizingContext(
-      AnalysisOptions analysisOptions,
-      DeclaredVariables declaredVariables,
-      SourceFactory sourceFactory,
-      SummaryDataStore store) {
-    AnalysisContextImpl analysisContext =
-        AnalysisEngine.instance.createAnalysisContext();
-    analysisContext.useSdkCachePartition = false;
-    analysisContext.analysisOptions = analysisOptions;
-    analysisContext.declaredVariables = declaredVariables;
-    analysisContext.sourceFactory = sourceFactory.clone();
-    var provider = new InputPackagesResultProvider(analysisContext, store);
-    analysisContext.resultProvider = provider;
-    return new _ResynthesizingAnalysisContext(
-        analysisContext, provider.resynthesizer);
+  /// Return `true` if this context grew too large, and should be recreated.
+  ///
+  /// It might have been used to analyze libraries that we don't need anymore,
+  /// and because loading libraries is not very expensive (but not free), the
+  /// simplest way to get rid of the garbage is to throw away everything.
+  bool pack() {
+    return _linkedDataInBytes > _maxLinkedDataInBytes;
   }
 }
-
-/**
- * [ContentCache] wrapper around [FileContentOverlay].
- */
-class _ContentCacheWrapper implements ContentCache {
-  final FileSystemState fsState;
-
-  _ContentCacheWrapper(this.fsState);
-
-  @override
-  void accept(ContentCacheVisitor visitor) {
-    throw new UnimplementedError();
-  }
-
-  @override
-  String getContents(Source source) {
-    return _getFileForSource(source).content;
-  }
-
-  @override
-  bool getExists(Source source) {
-    if (source.isInSystemLibrary) {
-      return true;
-    }
-    String uriStr = source.uri.toString();
-    if (fsState.externalSummaries != null &&
-        fsState.externalSummaries.hasUnlinkedUnit(uriStr)) {
-      return true;
-    }
-    return _getFileForSource(source).exists;
-  }
-
-  @override
-  int getModificationStamp(Source source) {
-    if (source.isInSystemLibrary) {
-      return 0;
-    }
-    return _getFileForSource(source).exists ? 0 : -1;
-  }
-
-  @override
-  String setContents(Source source, String contents) {
-    throw new UnimplementedError();
-  }
-
-  FileState _getFileForSource(Source source) {
-    String path = source.fullName;
-    return fsState.getFileForPath(path);
-  }
-}
-
-/**
- * Container with analysis context and the corresponding resynthesizer.
- */
-class _ResynthesizingAnalysisContext {
-  final AnalysisContextImpl context;
-  final ElementResynthesizer resynthesizer;
-
-  _ResynthesizingAnalysisContext(this.context, this.resynthesizer);
-}
diff --git a/pkg/analyzer/lib/src/dart/analysis/library_graph.dart b/pkg/analyzer/lib/src/dart/analysis/library_graph.dart
new file mode 100644
index 0000000..74cb08c
--- /dev/null
+++ b/pkg/analyzer/lib/src/dart/analysis/library_graph.dart
@@ -0,0 +1,173 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:typed_data';
+
+import 'package:analyzer/src/dart/analysis/file_state.dart';
+import 'package:analyzer/src/summary/api_signature.dart';
+import 'package:analyzer/src/summary/link.dart' as graph
+    show DependencyWalker, Node;
+import 'package:meta/meta.dart';
+
+/// Ensure that the [FileState.libraryCycle] for the [file] and anything it
+/// depends on is computed.
+void computeLibraryCycle(Uint32List linkedSalt, FileState file) {
+  var libraryWalker = new _LibraryWalker(linkedSalt);
+  libraryWalker.walk(libraryWalker.getNode(file));
+}
+
+/// Information about libraries that reference each other, so form a cycle.
+class LibraryCycle {
+  /// The libraries that belong to this cycle.
+  final List<FileState> libraries = [];
+
+  /// The library cycles that this cycle references directly.
+  @visibleForTesting
+  final Set<LibraryCycle> directDependencies = new Set<LibraryCycle>();
+
+  /// The cycles that use this cycle, used to [invalidate] transitively.
+  final List<LibraryCycle> _directUsers = [];
+
+  /// The transitive signature of this cycle.
+  ///
+  /// It is based on the API signatures of all files of the [libraries], and
+  /// transitive signatures of the cycles that the [libraries] reference
+  /// directly.  So, indirectly it is based on the transitive closure of all
+  /// files that [libraries] reference (but we don't compute these files).
+  String _transitiveSignature;
+
+  /// The map from a library in [libraries] to its transitive signature.
+  ///
+  /// It is almost the same as [_transitiveSignature], but is also based on
+  /// the URI of this specific library.  Currently we store each linked library
+  /// with its own key, so we need unique keys.  However practically we never
+  /// can use just *one* library of a cycle, we always use the whole cycle.
+  ///
+  /// TODO(scheglov) Switch to loading the whole cycle maybe?
+  final Map<FileState, String> transitiveSignatures = {};
+
+  LibraryCycle();
+
+  LibraryCycle.external() : _transitiveSignature = '<external>';
+
+  /// Invalidate this cycle and any cycles that directly or indirectly use it.
+  ///
+  /// Practically invalidation means that we clear the library cycle in all the
+  /// [libraries] that share this [LibraryCycle] instance.
+  void invalidate() {
+    for (var library in libraries) {
+      library.internal_setLibraryCycle(null, null);
+    }
+    for (var user in _directUsers) {
+      user.invalidate();
+    }
+    _directUsers.clear();
+  }
+
+  @override
+  String toString() {
+    return '[' + libraries.join(', ') + ']';
+  }
+}
+
+/// Node in [_LibraryWalker].
+class _LibraryNode extends graph.Node<_LibraryNode> {
+  final _LibraryWalker walker;
+  final FileState file;
+
+  _LibraryNode(this.walker, this.file);
+
+  @override
+  bool get isEvaluated => file.internal_libraryCycle != null;
+
+  @override
+  List<_LibraryNode> computeDependencies() {
+    return file.directReferencedLibraries.map(walker.getNode).toList();
+  }
+}
+
+/// Helper that organizes dependencies of a library into topologically
+/// sorted [LibraryCycle]s.
+class _LibraryWalker extends graph.DependencyWalker<_LibraryNode> {
+  final Uint32List _linkedSalt;
+  final Map<FileState, _LibraryNode> nodesOfFiles = {};
+
+  _LibraryWalker(this._linkedSalt);
+
+  @override
+  void evaluate(_LibraryNode v) {
+    evaluateScc([v]);
+  }
+
+  @override
+  void evaluateScc(List<_LibraryNode> scc) {
+    var cycle = new LibraryCycle();
+
+    var signature = new ApiSignature();
+    signature.addUint32List(_linkedSalt);
+
+    // Sort libraries to produce stable signatures.
+    scc.sort((first, second) {
+      var firstPath = first.file.path;
+      var secondPath = second.file.path;
+      return firstPath.compareTo(secondPath);
+    });
+
+    // Append direct referenced cycles.
+    for (var node in scc) {
+      var file = node.file;
+      _appendDirectlyReferenced(cycle, signature, file.importedFiles);
+      _appendDirectlyReferenced(cycle, signature, file.exportedFiles);
+    }
+
+    // Fill the cycle with libraries.
+    for (var node in scc) {
+      cycle.libraries.add(node.file);
+
+      signature.addInt(node.file.libraryFiles.length);
+      for (var file in node.file.libraryFiles) {
+        signature.addBytes(file.apiSignature);
+      }
+    }
+
+    // Compute the general library cycle signature.
+    cycle._transitiveSignature = signature.toHex();
+
+    // Compute library specific signatures.
+    for (var node in scc) {
+      var librarySignatureBuilder = new ApiSignature()
+        ..addString(node.file.uriStr)
+        ..addString(cycle._transitiveSignature);
+      var librarySignature = librarySignatureBuilder.toHex();
+
+      node.file.internal_setLibraryCycle(
+        cycle,
+        librarySignature,
+      );
+    }
+  }
+
+  _LibraryNode getNode(FileState file) {
+    return nodesOfFiles.putIfAbsent(file, () => new _LibraryNode(this, file));
+  }
+
+  void _appendDirectlyReferenced(
+    LibraryCycle cycle,
+    ApiSignature signature,
+    List<FileState> directlyReferenced,
+  ) {
+    signature.addInt(directlyReferenced.length);
+    for (var referencedLibrary in directlyReferenced) {
+      var referencedCycle = referencedLibrary.internal_libraryCycle;
+
+      // We get null when the library is a part of the cycle being build.
+      if (referencedCycle == null) continue;
+
+      if (cycle.directDependencies.add(referencedCycle)) {
+        referencedCycle._directUsers.add(cycle);
+        signature.addString(referencedCycle._transitiveSignature);
+      }
+    }
+  }
+}
diff --git a/pkg/analyzer/lib/src/dart/analysis/restricted_analysis_context.dart b/pkg/analyzer/lib/src/dart/analysis/restricted_analysis_context.dart
new file mode 100644
index 0000000..179ac05
--- /dev/null
+++ b/pkg/analyzer/lib/src/dart/analysis/restricted_analysis_context.dart
@@ -0,0 +1,55 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analyzer/dart/analysis/declared_variables.dart';
+import 'package:analyzer/src/context/context.dart';
+import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/generated/resolver.dart';
+import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/generated/type_system.dart';
+
+/// This class is a temporary step toward migrating Analyzer clients to the
+/// new API.  It guards against attempts to use any [AnalysisContext]
+/// functionality (which is task based), except what we intend to expose
+/// through the new API.
+class RestrictedAnalysisContext implements AnalysisContextImpl {
+  @override
+  final AnalysisOptionsImpl analysisOptions;
+
+  @override
+  final DeclaredVariables declaredVariables;
+
+  @override
+  final SourceFactory sourceFactory;
+
+  TypeProvider _typeProvider;
+
+  TypeSystem _typeSystem;
+
+  RestrictedAnalysisContext(
+      this.analysisOptions, this.declaredVariables, this.sourceFactory);
+
+  @override
+  TypeProvider get typeProvider => _typeProvider;
+
+  @override
+  set typeProvider(TypeProvider typeProvider) {
+    if (_typeProvider != null) {
+      throw StateError('TypeProvider can be set only once.');
+    }
+    _typeProvider = typeProvider;
+  }
+
+  @override
+  TypeSystem get typeSystem {
+    return _typeSystem ??= StrongTypeSystemImpl(
+      typeProvider,
+      implicitCasts: analysisOptions.implicitCasts,
+    );
+  }
+
+  noSuchMethod(Invocation invocation) {
+    return super.noSuchMethod(invocation);
+  }
+}
diff --git a/pkg/analyzer/lib/src/dart/analysis/results.dart b/pkg/analyzer/lib/src/dart/analysis/results.dart
index 2b9ac07..fd50c1c 100644
--- a/pkg/analyzer/lib/src/dart/analysis/results.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/results.dart
@@ -68,39 +68,62 @@
 class ParsedLibraryResultImpl extends AnalysisResultImpl
     implements ParsedLibraryResult {
   @override
-  final ResultState state = ResultState.VALID;
-
-  @override
   final List<ParsedUnitResult> units;
 
   ParsedLibraryResultImpl(
       AnalysisSession session, String path, Uri uri, this.units)
       : super(session, path, uri);
 
+  ParsedLibraryResultImpl.external(AnalysisSession session, Uri uri)
+      : this(session, null, uri, null);
+
   @Deprecated('This factory exists temporary until AnalysisSession migration.')
   factory ParsedLibraryResultImpl.tmp(LibraryElement library) {
-    var libraryPath = library.source.fullName;
-    var analysisContext = library.context;
-    var units = <ParsedUnitResult>[];
-    for (var unitElement in library.units) {
-      var unitSource = unitElement.source;
+    var session = library.session;
+    if (session != null) {
+      return session.getParsedLibraryByElement(library);
+    } else {
+      var analysisContext = library.context;
+      var units = <ParsedUnitResult>[];
+      for (var unitElement in library.units) {
+        var unitSource = unitElement.source;
 
-      if (!analysisContext.exists(unitSource)) {
-        continue;
+        if (!analysisContext.exists(unitSource)) {
+          continue;
+        }
+
+        var content = analysisContext.getContents(unitSource).data;
+        var lineInfo = analysisContext.getLineInfo(unitSource);
+        var unit = analysisContext.parseCompilationUnit(unitSource);
+        units.add(ParsedUnitResultImpl(
+            null,
+            unitSource.fullName,
+            unitSource.uri,
+            content,
+            lineInfo,
+            unitSource != library.source,
+            unit, const []));
       }
-
-      var content = analysisContext.getContents(unitSource).data;
-      var lineInfo = analysisContext.getLineInfo(unitSource);
-      var unit = analysisContext.parseCompilationUnit(unitSource);
-      units.add(ParsedUnitResultImpl(null, unitSource.fullName, unitSource.uri,
-          content, lineInfo, unitSource != library.source, unit, const []));
+      var libraryPath = library.source.fullName;
+      return ParsedLibraryResultImpl(
+          null, libraryPath, library.source.uri, units);
     }
-    return ParsedLibraryResultImpl(
-        null, libraryPath, library.source.uri, units);
+  }
+
+  @override
+  ResultState get state {
+    if (path == null) {
+      return ResultState.NOT_A_FILE;
+    }
+    return ResultState.VALID;
   }
 
   @override
   ElementDeclarationResult getElementDeclaration(Element element) {
+    if (state != ResultState.VALID) {
+      throw StateError('The result is not valid: $state');
+    }
+
     var elementPath = element.source.fullName;
     var unitResult = units.firstWhere(
       (r) => r.path == elementPath,
@@ -190,25 +213,30 @@
 
   @Deprecated('This method exists temporary until AnalysisSession migration.')
   static Future<ResolvedLibraryResult> tmp(LibraryElement library) async {
-    var libraryPath = library.source.fullName;
-    var units = <ResolvedUnitResult>[];
-    var analysisContext = library.context;
-    for (var unitElement in library.units) {
-      var unitSource = unitElement.source;
+    var session = library.session;
+    if (session != null) {
+      return session.getResolvedLibraryByElement(library);
+    } else {
+      var units = <ResolvedUnitResult>[];
+      var analysisContext = library.context;
+      for (var unitElement in library.units) {
+        var unitSource = unitElement.source;
 
-      if (!analysisContext.exists(unitSource)) {
-        continue;
+        if (!analysisContext.exists(unitSource)) {
+          continue;
+        }
+
+        var path = unitSource.fullName;
+        var content = analysisContext.getContents(unitSource).data;
+        var lineInfo = analysisContext.getLineInfo(unitSource);
+        var unit = analysisContext.resolveCompilationUnit(unitSource, library);
+        units.add(ResolvedUnitResultImpl(null, path, unitSource.uri, true,
+            content, lineInfo, unitSource != library.source, unit, const []));
       }
-
-      var path = unitSource.fullName;
-      var content = analysisContext.getContents(unitSource).data;
-      var lineInfo = analysisContext.getLineInfo(unitSource);
-      var unit = analysisContext.resolveCompilationUnit(unitSource, library);
-      units.add(ResolvedUnitResultImpl(null, path, unitSource.uri, true,
-          content, lineInfo, unitSource != library.source, unit, const []));
+      var libraryPath = library.source.fullName;
+      return ResolvedLibraryResultImpl(null, libraryPath, library.source.uri,
+          library, library.context.typeProvider, units);
     }
-    return ResolvedLibraryResultImpl(null, libraryPath, library.source.uri,
-        library, library.context.typeProvider, units);
   }
 }
 
diff --git a/pkg/analyzer/lib/src/dart/analysis/search.dart b/pkg/analyzer/lib/src/dart/analysis/search.dart
index 9d1ff41..38f006e 100644
--- a/pkg/analyzer/lib/src/dart/analysis/search.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/search.dart
@@ -1,10 +1,11 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:async';
 import 'dart:collection';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ -654,10 +655,10 @@
     LibraryElement libraryElement = element.library;
     for (CompilationUnitElement unitElement in libraryElement.units) {
       String unitPath = unitElement.source.fullName;
-      AnalysisResult unitAnalysisResult = await _driver.getResult(unitPath);
+      ResolvedUnitResult unitResult = await _driver.getResult(unitPath);
       _ImportElementReferencesVisitor visitor =
           new _ImportElementReferencesVisitor(element, unitElement);
-      unitAnalysisResult.unit.accept(visitor);
+      unitResult.unit.accept(visitor);
       results.addAll(visitor.results);
     }
     return results;
@@ -675,8 +676,8 @@
     List<SearchResult> results = <SearchResult>[];
     for (CompilationUnitElement unitElement in element.units) {
       String unitPath = unitElement.source.fullName;
-      AnalysisResult unitAnalysisResult = await _driver.getResult(unitPath);
-      CompilationUnit unit = unitAnalysisResult.unit;
+      ResolvedUnitResult unitResult = await _driver.getResult(unitPath);
+      CompilationUnit unit = unitResult.unit;
       for (Directive directive in unit.directives) {
         if (directive is PartOfDirective && directive.element == element) {
           results.add(new SearchResult._(
@@ -702,8 +703,8 @@
     }
 
     // Prepare the unit.
-    AnalysisResult analysisResult = await _driver.getResult(path);
-    CompilationUnit unit = analysisResult.unit;
+    ResolvedUnitResult unitResult = await _driver.getResult(path);
+    CompilationUnit unit = unitResult.unit;
     if (unit == null) {
       return const <SearchResult>[];
     }
@@ -715,7 +716,7 @@
     }
 
     // Prepare the enclosing node.
-    AstNode enclosingNode = node.getAncestor(isRootNode);
+    AstNode enclosingNode = node.thisOrAncestorMatching(isRootNode);
     if (enclosingNode == null) {
       return const <SearchResult>[];
     }
@@ -759,10 +760,10 @@
     LibraryElement libraryElement = element.library;
     for (CompilationUnitElement unitElement in libraryElement.units) {
       String unitPath = unitElement.source.fullName;
-      AnalysisResult unitAnalysisResult = await _driver.getResult(unitPath);
+      ResolvedUnitResult unitResult = await _driver.getResult(unitPath);
       _LocalReferencesVisitor visitor =
           new _LocalReferencesVisitor(element, unitElement);
-      unitAnalysisResult.unit.accept(visitor);
+      unitResult.unit.accept(visitor);
       results.addAll(visitor.results);
     }
     return results;
diff --git a/pkg/analyzer/lib/src/dart/analysis/session.dart b/pkg/analyzer/lib/src/dart/analysis/session.dart
index b44d556..7f1a46e 100644
--- a/pkg/analyzer/lib/src/dart/analysis/session.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/session.dart
@@ -4,6 +4,7 @@
 
 import 'dart:async';
 
+import 'package:analyzer/dart/analysis/analysis_context.dart';
 import 'package:analyzer/dart/analysis/declared_variables.dart';
 import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/analysis/session.dart';
@@ -51,6 +52,9 @@
   AnalysisSessionImpl(this._driver);
 
   @override
+  AnalysisContext get analysisContext => _driver.analysisContext;
+
+  @override
   DeclaredVariables get declaredVariables => _driver.declaredVariables;
 
   @override
@@ -110,24 +114,36 @@
     return libraryElement;
   }
 
+  @deprecated
   @override
-  Future<ParseResult> getParsedAst(String path) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
-    return getParsedAstSync(path);
+  Future<ParseResult> getParsedAst(String path) async => getParsedUnit(path);
+
+  @deprecated
+  @override
+  ParseResult getParsedAstSync(String path) => getParsedUnit(path);
+
+  @override
+  ParsedLibraryResult getParsedLibrary(String path) {
+    _checkConsistency();
+    return _driver.getParsedLibrary(path);
   }
 
   @override
-  ParseResult getParsedAstSync(String path) {
+  ParsedLibraryResult getParsedLibraryByElement(LibraryElement element) {
+    _checkConsistency();
+    _checkElementOfThisSession(element);
+    return _driver.getParsedLibraryByUri(element.source.uri);
+  }
+
+  @override
+  ParsedUnitResult getParsedUnit(String path) {
     _checkConsistency();
     return _driver.parseFileSync(path);
   }
 
+  @deprecated
   @override
-  Future<ResolveResult> getResolvedAst(String path) {
-    _checkConsistency();
-    return _driver.getResult(path);
-  }
+  Future<ResolveResult> getResolvedAst(String path) => getResolvedUnit(path);
 
   @override
   Future<ResolvedLibraryResult> getResolvedLibrary(String path) {
@@ -144,6 +160,12 @@
   }
 
   @override
+  Future<ResolvedUnitResult> getResolvedUnit(String path) {
+    _checkConsistency();
+    return _driver.getResult(path);
+  }
+
+  @override
   Future<SourceKind> getSourceKind(String path) {
     _checkConsistency();
     return _driver.getSourceKind(path);
@@ -179,11 +201,10 @@
   }
 
   void _checkElementOfThisSession(Element element) {
-    // TODO(scheglov) Requires 2.2 implementation
-//    if (element.session != this) {
-//      throw new ArgumentError(
-//          '(${element.runtimeType}) $element was not produced by '
-//          'this session.');
-//    }
+    if (element.session != this) {
+      throw new ArgumentError(
+          '(${element.runtimeType}) $element was not produced by '
+          'this session.');
+    }
   }
 }
diff --git a/pkg/analyzer/lib/src/dart/analysis/session_helper.dart b/pkg/analyzer/lib/src/dart/analysis/session_helper.dart
index e35ec6a..9692a26 100644
--- a/pkg/analyzer/lib/src/dart/analysis/session_helper.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/session_helper.dart
@@ -4,6 +4,7 @@
 
 import 'dart:async';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/element/element.dart';
 
@@ -15,14 +16,14 @@
 class AnalysisSessionHelper {
   final AnalysisSession session;
 
+  final Map<String, ResolvedLibraryResult> _resolvedLibraries = {};
+
   AnalysisSessionHelper(this.session);
 
   /// Return the [ClassElement] with the given [className] that is exported
   /// from the library with the given [libraryUri], or `null` if the library
   /// does not export a class with such name.
   Future<ClassElement> getClass(String libraryUri, String className) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
     var libraryElement = await session.getLibraryByUri(libraryUri);
     var element = libraryElement.exportNamespace.get(className);
     if (element is ClassElement) {
@@ -32,13 +33,31 @@
     }
   }
 
+  /// Return the declaration of the [element], or `null` is the [element]
+  /// is synthetic.
+  Future<ElementDeclarationResult> getElementDeclaration(
+      Element element) async {
+    var libraryPath = element.library.source.fullName;
+    var resolvedLibrary = await _getResolvedLibrary(libraryPath);
+    return resolvedLibrary.getElementDeclaration(element);
+  }
+
+  /// Return the resolved unit that declares the given [element].
+  Future<ResolvedUnitResult> getResolvedUnitByElement(Element element) async {
+    var libraryPath = element.library.source.fullName;
+    var resolvedLibrary = await _getResolvedLibrary(libraryPath);
+
+    var unitPath = element.source.fullName;
+    return resolvedLibrary.units.singleWhere((resolvedUnit) {
+      return resolvedUnit.path == unitPath;
+    });
+  }
+
   /// Return the [PropertyAccessorElement] with the given [name] that is
   /// exported from the library with the given [uri], or `null` if the
   /// library does not export a top-level accessor with such name.
   Future<PropertyAccessorElement> getTopLevelPropertyAccessor(
       String uri, String name) async {
-    // TODO(brianwilkerson) Determine whether this await is necessary.
-    await null;
     var libraryElement = await session.getLibraryByUri(uri);
     var element = libraryElement.exportNamespace.get(name);
     if (element is PropertyAccessorElement) {
@@ -47,4 +66,14 @@
       return null;
     }
   }
+
+  /// Return a newly resolved, or cached library with the given [path].
+  Future<ResolvedLibraryResult> _getResolvedLibrary(String path) async {
+    var result = _resolvedLibraries[path];
+    if (result == null) {
+      result = await session.getResolvedLibrary(path);
+      _resolvedLibraries[path] = result;
+    }
+    return result;
+  }
 }
diff --git a/pkg/analyzer/lib/src/dart/analysis/uri_converter.dart b/pkg/analyzer/lib/src/dart/analysis/uri_converter.dart
index df11c02..da33b5a 100644
--- a/pkg/analyzer/lib/src/dart/analysis/uri_converter.dart
+++ b/pkg/analyzer/lib/src/dart/analysis/uri_converter.dart
@@ -18,8 +18,8 @@
   final AnalysisDriver driver;
 
   /**
-   * Initialize a newly created URI converter to use the given [context] and
-   * [driver] to perform the conversions.
+   * Initialize a newly created URI converter to use the given [driver] to =
+   * perform the conversions.
    */
   DriverBasedUriConverter(this.driver);
 
diff --git a/pkg/analyzer/lib/src/dart/ast/ast.dart b/pkg/analyzer/lib/src/dart/ast/ast.dart
index 3db5ed9..b328a9a 100644
--- a/pkg/analyzer/lib/src/dart/ast/ast.dart
+++ b/pkg/analyzer/lib/src/dart/ast/ast.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -939,6 +939,15 @@
   }
 
   @override
+  T thisOrAncestorOfType<T extends AstNode>() {
+    AstNode node = this;
+    while (node != null && node is! T) {
+      node = node.parent;
+    }
+    return node as T;
+  }
+
+  @override
   String toSource() {
     StringBuffer buffer = new StringBuffer();
     accept(new ToSourceVisitor2(buffer));
@@ -1596,7 +1605,7 @@
 /**
  * Helper class to allow iteration of child entities of an AST node.
  */
-class ChildEntities extends Object
+class ChildEntities
     with IterableMixin<SyntacticEntity>
     implements Iterable<SyntacticEntity> {
   /**
@@ -2687,17 +2696,21 @@
     if (errorCode is CompileTimeErrorCode) {
       switch (errorCode) {
         case CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL:
+        case CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_INT:
         case CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_NUM_STRING:
         case CompileTimeErrorCode.CONST_EVAL_TYPE_INT:
         case CompileTimeErrorCode.CONST_EVAL_TYPE_NUM:
         case CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION:
         case CompileTimeErrorCode.CONST_EVAL_THROWS_IDBZE:
+        case CompileTimeErrorCode.CONST_WITH_NON_CONST:
         case CompileTimeErrorCode.CONST_WITH_NON_CONSTANT_ARGUMENT:
         case CompileTimeErrorCode.NON_CONSTANT_VALUE_IN_INITIALIZER:
         case CompileTimeErrorCode
             .CONST_CONSTRUCTOR_WITH_FIELD_INITIALIZED_BY_NON_CONST:
         case CompileTimeErrorCode.INVALID_CONSTANT:
         case CompileTimeErrorCode.MISSING_CONST_IN_LIST_LITERAL:
+        case CompileTimeErrorCode.MISSING_CONST_IN_MAP_LITERAL:
+        case CompileTimeErrorCode.MISSING_CONST_IN_SET_LITERAL:
           hasConstError = true;
       }
     }
@@ -6394,8 +6407,6 @@
  *
  *    newExpression ::=
  *        ('new' | 'const')? [TypeName] ('.' [SimpleIdentifier])? [ArgumentList]
- *
- * 'new' | 'const' are only optional if the previewDart2 option is enabled.
  */
 class InstanceCreationExpressionImpl extends ExpressionImpl
     implements InstanceCreationExpression {
@@ -6487,8 +6498,6 @@
 
   /**
    * Return `true` if this is an implicit constructor invocations.
-   *
-   * This can only be `true` when the previewDart2 option is enabled.
    */
   bool get isImplicit => keyword == null;
 
@@ -6531,7 +6540,10 @@
    *
    * Also note that this method can cause constant evaluation to occur, which
    * can be computationally expensive.
+   * 
+   * Deprecated: Use `LinterContext.canBeConst` instead.
    */
+  @deprecated
   bool canBeConst() {
     //
     // Verify that the invoked constructor is a const constructor.
@@ -8252,9 +8264,7 @@
 /**
  * A list of AST nodes that have a common parent.
  */
-class NodeListImpl<E extends AstNode> extends Object
-    with ListMixin<E>
-    implements NodeList<E> {
+class NodeListImpl<E extends AstNode> with ListMixin<E> implements NodeList<E> {
   /**
    * The node that is the parent of each of the elements in the list.
    */
@@ -9460,6 +9470,78 @@
 }
 
 /**
+ * A literal set.
+ *
+ *    setLiteral ::=
+ *        'const'? ('<' [TypeAnnotation] '>')?
+ *        '{' [Expression] (',' [Expression])* ','? '}'
+ *      | 'const'? ('<' [TypeAnnotation] '>')? '{' '}'
+ */
+class SetLiteralImpl extends TypedLiteralImpl implements SetLiteral {
+  /**
+   * The left curly bracket.
+   */
+  @override
+  Token leftBracket;
+
+  /**
+   * The elements in the set.
+   */
+  NodeList<Expression> _elements;
+
+  /**
+   * The right curly bracket.
+   */
+  @override
+  Token rightBracket;
+
+  /**
+   * Initialize a newly created set literal. The [constKeyword] can be `null` if
+   * the literal is not a constant. The [typeArguments] can be `null` if no type
+   * arguments were declared. The [elements] can be `null` if the set is empty.
+   */
+  SetLiteralImpl(Token constKeyword, TypeArgumentListImpl typeArguments,
+      this.leftBracket, List<Expression> elements, this.rightBracket)
+      : super(constKeyword, typeArguments) {
+    _elements = new NodeListImpl<Expression>(this, elements);
+  }
+
+  @override
+  Token get beginToken {
+    if (constKeyword != null) {
+      return constKeyword;
+    }
+    TypeArgumentList typeArguments = this.typeArguments;
+    if (typeArguments != null) {
+      return typeArguments.beginToken;
+    }
+    return leftBracket;
+  }
+
+  @override
+  // TODO(paulberry): add commas.
+  Iterable<SyntacticEntity> get childEntities => super._childEntities
+    ..add(leftBracket)
+    ..addAll(elements)
+    ..add(rightBracket);
+
+  @override
+  NodeList<Expression> get elements => _elements;
+
+  @override
+  Token get endToken => rightBracket;
+
+  @override
+  E accept<E>(AstVisitor<E> visitor) => visitor.visitSetLiteral(this);
+
+  @override
+  void visitChildren(AstVisitor visitor) {
+    super.visitChildren(visitor);
+    _elements.accept(visitor);
+  }
+}
+
+/**
  * A combinator that restricts the names being imported to those in a given list.
  *
  *    showCombinator ::=
diff --git a/pkg/analyzer/lib/src/dart/ast/ast_factory.dart b/pkg/analyzer/lib/src/dart/ast/ast_factory.dart
index 6a3c3b5..d12b7a6 100644
--- a/pkg/analyzer/lib/src/dart/ast/ast_factory.dart
+++ b/pkg/analyzer/lib/src/dart/ast/ast_factory.dart
@@ -832,6 +832,12 @@
   ScriptTag scriptTag(Token scriptTag) => new ScriptTagImpl(scriptTag);
 
   @override
+  SetLiteral setLiteral(Token constKeyword, TypeArgumentList typeArguments,
+          Token leftBracket, List<Expression> elements, Token rightBracket) =>
+      new SetLiteralImpl(
+          constKeyword, typeArguments, leftBracket, elements, rightBracket);
+
+  @override
   ShowCombinator showCombinator(
           Token keyword, List<SimpleIdentifier> shownNames) =>
       new ShowCombinatorImpl(keyword, shownNames);
diff --git a/pkg/analyzer/lib/src/dart/ast/utilities.dart b/pkg/analyzer/lib/src/dart/ast/utilities.dart
index f7e6832..2370ed0 100644
--- a/pkg/analyzer/lib/src/dart/ast/utilities.dart
+++ b/pkg/analyzer/lib/src/dart/ast/utilities.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -845,6 +845,14 @@
       astFactory.scriptTag(cloneToken(node.scriptTag));
 
   @override
+  SetLiteral visitSetLiteral(SetLiteral node) => astFactory.setLiteral(
+      cloneToken(node.constKeyword),
+      cloneNode(node.typeArguments),
+      cloneToken(node.leftBracket),
+      cloneNodeList(node.elements),
+      cloneToken(node.rightBracket));
+
+  @override
   ShowCombinator visitShowCombinator(ShowCombinator node) => astFactory
       .showCombinator(cloneToken(node.keyword), cloneNodeList(node.shownNames));
 
@@ -1988,6 +1996,16 @@
   }
 
   @override
+  bool visitSetLiteral(SetLiteral node) {
+    SetLiteral other = _other as SetLiteral;
+    return isEqualTokens(node.constKeyword, other.constKeyword) &&
+        isEqualNodes(node.typeArguments, other.typeArguments) &&
+        isEqualTokens(node.leftBracket, other.leftBracket) &&
+        _isEqualNodeLists(node.elements, other.elements) &&
+        isEqualTokens(node.rightBracket, other.rightBracket);
+  }
+
+  @override
   bool visitShowCombinator(ShowCombinator node) {
     ShowCombinator other = _other as ShowCombinator;
     return isEqualTokens(node.keyword, other.keyword) &&
@@ -2633,7 +2651,7 @@
  *
  * See [PrefixedIdentifier.isDeferred].
  */
-class DeferredLibraryReferenceDetector extends RecursiveAstVisitor<Object> {
+class DeferredLibraryReferenceDetector extends RecursiveAstVisitor<void> {
   /**
    * A flag indicating whether an identifier from a deferred library has been
    * found.
@@ -2647,13 +2665,12 @@
   bool get result => _result;
 
   @override
-  Object visitPrefixedIdentifier(PrefixedIdentifier node) {
+  void visitPrefixedIdentifier(PrefixedIdentifier node) {
     if (!_result) {
       if (node.isDeferred) {
         _result = true;
       }
     }
-    return null;
   }
 }
 
@@ -3713,6 +3730,18 @@
       astFactory.scriptTag(_mapToken(node.scriptTag));
 
   @override
+  SetLiteral visitSetLiteral(SetLiteral node) {
+    SetLiteral copy = astFactory.setLiteral(
+        _mapToken(node.constKeyword),
+        _cloneNode(node.typeArguments),
+        _mapToken(node.leftBracket),
+        _cloneNodeList(node.elements),
+        _mapToken(node.rightBracket));
+    copy.staticType = node.staticType;
+    return copy;
+  }
+
+  @override
   ShowCombinator visitShowCombinator(ShowCombinator node) => astFactory
       .showCombinator(_mapToken(node.keyword), _cloneNodeList(node.shownNames));
 
@@ -3959,7 +3988,7 @@
  * the [AstNode] with the shortest length whose source range completely
  * encompasses the specified range.
  */
-class NodeLocator extends UnifyingAstVisitor<Object> {
+class NodeLocator extends UnifyingAstVisitor<void> {
   /**
    * The start offset of the range used to identify the node.
    */
@@ -4012,10 +4041,10 @@
   }
 
   @override
-  Object visitNode(AstNode node) {
+  void visitNode(AstNode node) {
     // Don't visit a new tree if the result has been already found.
     if (_foundNode != null) {
-      return null;
+      return;
     }
     // Check whether the current node covers the selection.
     Token beginToken = node.beginToken;
@@ -4032,11 +4061,8 @@
     }
     int end = endToken.end;
     int start = node.offset;
-    if (end < _startOffset) {
-      return null;
-    }
-    if (start > _endOffset) {
-      return null;
+    if (end < _startOffset || start > _endOffset) {
+      return;
     }
     // Check children.
     try {
@@ -4050,13 +4076,12 @@
     }
     // Found a child.
     if (_foundNode != null) {
-      return null;
+      return;
     }
     // Check this node.
     if (start <= _startOffset && _endOffset <= end) {
       _foundNode = node;
     }
-    return null;
   }
 }
 
@@ -4065,7 +4090,7 @@
  * More specifically, they will return the deepest [AstNode] which completely
  * encompasses the specified range.
  */
-class NodeLocator2 extends UnifyingAstVisitor<Object> {
+class NodeLocator2 extends UnifyingAstVisitor<void> {
   /**
    * The inclusive start offset of the range used to identify the node.
    */
@@ -4112,10 +4137,10 @@
   }
 
   @override
-  Object visitNode(AstNode node) {
+  void visitNode(AstNode node) {
     // Don't visit a new tree if the result has been already found.
     if (_foundNode != null) {
-      return null;
+      return;
     }
     // Check whether the current node covers the selection.
     Token beginToken = node.beginToken;
@@ -4132,11 +4157,8 @@
     }
     int end = endToken.end;
     int start = node.offset;
-    if (end <= _startOffset) {
-      return null;
-    }
-    if (start > _endOffset) {
-      return null;
+    if (end <= _startOffset || start > _endOffset) {
+      return;
     }
     // Check children.
     try {
@@ -4150,13 +4172,12 @@
     }
     // Found a child.
     if (_foundNode != null) {
-      return null;
+      return;
     }
     // Check this node.
     if (start <= _startOffset && _endOffset < end) {
       _foundNode = node;
     }
-    return null;
   }
 }
 
@@ -5164,6 +5185,14 @@
   bool visitScriptTag(ScriptTag scriptTag) => visitNode(scriptTag);
 
   @override
+  bool visitSetLiteral(SetLiteral node) {
+    if (_replaceInList(node.elements)) {
+      return true;
+    }
+    return visitTypedLiteral(node);
+  }
+
+  @override
   bool visitShowCombinator(ShowCombinator node) {
     if (_replaceInList(node.shownNames)) {
       return true;
@@ -6494,6 +6523,21 @@
   }
 
   @override
+  bool visitSetLiteral(SetLiteral node) {
+    SetLiteral toNode = this._toNode as SetLiteral;
+    if (_and(
+        _isEqualTokens(node.constKeyword, toNode.constKeyword),
+        _isEqualNodes(node.typeArguments, toNode.typeArguments),
+        _isEqualTokens(node.leftBracket, toNode.leftBracket),
+        _isEqualNodeLists(node.elements, toNode.elements),
+        _isEqualTokens(node.rightBracket, toNode.rightBracket))) {
+      toNode.staticType = node.staticType;
+      return true;
+    }
+    return false;
+  }
+
+  @override
   bool visitShowCombinator(ShowCombinator node) {
     ShowCombinator toNode = this._toNode as ShowCombinator;
     return _and(_isEqualTokens(node.keyword, toNode.keyword),
@@ -6893,7 +6937,7 @@
  * Completion test code coverage is 95%. The two basic blocks that are not
  * executed cannot be executed. They are included for future reference.
  */
-class ScopedNameFinder extends GeneralizingAstVisitor<Object> {
+class ScopedNameFinder extends GeneralizingAstVisitor<void> {
   Declaration _declarationNode;
 
   AstNode _immediateChild;
@@ -6912,112 +6956,104 @@
   Map<String, SimpleIdentifier> get locals => _locals;
 
   @override
-  Object visitBlock(Block node) {
+  void visitBlock(Block node) {
     _checkStatements(node.statements);
-    return super.visitBlock(node);
+    super.visitBlock(node);
   }
 
   @override
-  Object visitCatchClause(CatchClause node) {
+  void visitCatchClause(CatchClause node) {
     _addToScope(node.exceptionParameter);
     _addToScope(node.stackTraceParameter);
-    return super.visitCatchClause(node);
+    super.visitCatchClause(node);
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     if (!identical(_immediateChild, node.parameters)) {
       _addParameters(node.parameters.parameters);
     }
     _declarationNode = node;
-    return null;
   }
 
   @override
-  Object visitFieldDeclaration(FieldDeclaration node) {
+  void visitFieldDeclaration(FieldDeclaration node) {
     _declarationNode = node;
-    return null;
   }
 
   @override
-  Object visitForEachStatement(ForEachStatement node) {
+  void visitForEachStatement(ForEachStatement node) {
     DeclaredIdentifier loopVariable = node.loopVariable;
     if (loopVariable != null) {
       _addToScope(loopVariable.identifier);
     }
-    return super.visitForEachStatement(node);
+    super.visitForEachStatement(node);
   }
 
   @override
-  Object visitForStatement(ForStatement node) {
+  void visitForStatement(ForStatement node) {
     if (!identical(_immediateChild, node.variables) && node.variables != null) {
       _addVariables(node.variables.variables);
     }
-    return super.visitForStatement(node);
+    super.visitForStatement(node);
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     if (node.parent is! FunctionDeclarationStatement) {
       _declarationNode = node;
-      return null;
+    } else {
+      super.visitFunctionDeclaration(node);
     }
-    return super.visitFunctionDeclaration(node);
   }
 
   @override
-  Object visitFunctionDeclarationStatement(FunctionDeclarationStatement node) {
+  void visitFunctionDeclarationStatement(FunctionDeclarationStatement node) {
     _referenceIsWithinLocalFunction = true;
-    return super.visitFunctionDeclarationStatement(node);
+    super.visitFunctionDeclarationStatement(node);
   }
 
   @override
-  Object visitFunctionExpression(FunctionExpression node) {
+  void visitFunctionExpression(FunctionExpression node) {
     if (node.parameters != null &&
         !identical(_immediateChild, node.parameters)) {
       _addParameters(node.parameters.parameters);
     }
-    return super.visitFunctionExpression(node);
+    super.visitFunctionExpression(node);
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     _declarationNode = node;
-    if (node.parameters == null) {
-      return null;
-    }
-    if (!identical(_immediateChild, node.parameters)) {
+    if (node.parameters != null &&
+        !identical(_immediateChild, node.parameters)) {
       _addParameters(node.parameters.parameters);
     }
-    return null;
   }
 
   @override
-  Object visitNode(AstNode node) {
+  void visitNode(AstNode node) {
     _immediateChild = node;
     AstNode parent = node.parent;
     if (parent != null) {
       parent.accept(this);
     }
-    return null;
   }
 
   @override
-  Object visitSwitchMember(SwitchMember node) {
+  void visitSwitchMember(SwitchMember node) {
     _checkStatements(node.statements);
-    return super.visitSwitchMember(node);
+    super.visitSwitchMember(node);
   }
 
   @override
-  Object visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
+  void visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
     _declarationNode = node;
-    return null;
   }
 
   @override
-  Object visitTypeAlias(TypeAlias node) {
+  void visitTypeAlias(TypeAlias node) {
     _declarationNode = node;
-    return null;
   }
 
   void _addParameters(NodeList<FormalParameter> vars) {
@@ -7076,7 +7112,7 @@
  * This class has been deprecated. Use the class ToSourceVisitor2 instead.
  */
 @deprecated
-class ToSourceVisitor implements AstVisitor<Object> {
+class ToSourceVisitor implements AstVisitor<void> {
   /**
    * The writer to which the source is to be written.
    */
@@ -7089,38 +7125,34 @@
   ToSourceVisitor(this._writer);
 
   @override
-  Object visitAdjacentStrings(AdjacentStrings node) {
+  void visitAdjacentStrings(AdjacentStrings node) {
     _visitNodeListWithSeparator(node.strings, " ");
-    return null;
   }
 
   @override
-  Object visitAnnotation(Annotation node) {
+  void visitAnnotation(Annotation node) {
     _writer.print('@');
     _visitNode(node.name);
     _visitNodeWithPrefix(".", node.constructorName);
     _visitNode(node.arguments);
-    return null;
   }
 
   @override
-  Object visitArgumentList(ArgumentList node) {
+  void visitArgumentList(ArgumentList node) {
     _writer.print('(');
     _visitNodeListWithSeparator(node.arguments, ", ");
     _writer.print(')');
-    return null;
   }
 
   @override
-  Object visitAsExpression(AsExpression node) {
+  void visitAsExpression(AsExpression node) {
     _visitNode(node.expression);
     _writer.print(" as ");
     _visitNode(node.type);
-    return null;
   }
 
   @override
-  bool visitAssertInitializer(AssertInitializer node) {
+  void visitAssertInitializer(AssertInitializer node) {
     _writer.print("assert (");
     _visitNode(node.condition);
     if (node.message != null) {
@@ -7128,11 +7160,10 @@
       _visitNode(node.message);
     }
     _writer.print(")");
-    return null;
   }
 
   @override
-  Object visitAssertStatement(AssertStatement node) {
+  void visitAssertStatement(AssertStatement node) {
     _writer.print("assert (");
     _visitNode(node.condition);
     if (node.message != null) {
@@ -7140,46 +7171,41 @@
       _visitNode(node.message);
     }
     _writer.print(");");
-    return null;
   }
 
   @override
-  Object visitAssignmentExpression(AssignmentExpression node) {
+  void visitAssignmentExpression(AssignmentExpression node) {
     _visitNode(node.leftHandSide);
     _writer.print(' ');
     _writer.print(node.operator.lexeme);
     _writer.print(' ');
     _visitNode(node.rightHandSide);
-    return null;
   }
 
   @override
-  Object visitAwaitExpression(AwaitExpression node) {
+  void visitAwaitExpression(AwaitExpression node) {
     _writer.print("await ");
     _visitNode(node.expression);
-    return null;
   }
 
   @override
-  Object visitBinaryExpression(BinaryExpression node) {
+  void visitBinaryExpression(BinaryExpression node) {
     _visitNode(node.leftOperand);
     _writer.print(' ');
     _writer.print(node.operator.lexeme);
     _writer.print(' ');
     _visitNode(node.rightOperand);
-    return null;
   }
 
   @override
-  Object visitBlock(Block node) {
+  void visitBlock(Block node) {
     _writer.print('{');
     _visitNodeListWithSeparator(node.statements, " ");
     _writer.print('}');
-    return null;
   }
 
   @override
-  Object visitBlockFunctionBody(BlockFunctionBody node) {
+  void visitBlockFunctionBody(BlockFunctionBody node) {
     Token keyword = node.keyword;
     if (keyword != null) {
       _writer.print(keyword.lexeme);
@@ -7189,32 +7215,28 @@
       _writer.print(' ');
     }
     _visitNode(node.block);
-    return null;
   }
 
   @override
-  Object visitBooleanLiteral(BooleanLiteral node) {
+  void visitBooleanLiteral(BooleanLiteral node) {
     _writer.print(node.literal.lexeme);
-    return null;
   }
 
   @override
-  Object visitBreakStatement(BreakStatement node) {
+  void visitBreakStatement(BreakStatement node) {
     _writer.print("break");
     _visitNodeWithPrefix(" ", node.label);
     _writer.print(";");
-    return null;
   }
 
   @override
-  Object visitCascadeExpression(CascadeExpression node) {
+  void visitCascadeExpression(CascadeExpression node) {
     _visitNode(node.target);
     _visitNodeList(node.cascadeSections);
-    return null;
   }
 
   @override
-  Object visitCatchClause(CatchClause node) {
+  void visitCatchClause(CatchClause node) {
     _visitNodeWithPrefix("on ", node.exceptionType);
     if (node.catchKeyword != null) {
       if (node.exceptionType != null) {
@@ -7228,11 +7250,10 @@
       _writer.print(" ");
     }
     _visitNode(node.body);
-    return null;
   }
 
   @override
-  Object visitClassDeclaration(ClassDeclaration node) {
+  void visitClassDeclaration(ClassDeclaration node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _visitTokenWithSuffix(node.abstractKeyword, " ");
     _writer.print("class ");
@@ -7244,11 +7265,10 @@
     _writer.print(" {");
     _visitNodeListWithSeparator(node.members, " ");
     _writer.print("}");
-    return null;
   }
 
   @override
-  Object visitClassTypeAlias(ClassTypeAlias node) {
+  void visitClassTypeAlias(ClassTypeAlias node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     if (node.abstractKeyword != null) {
       _writer.print("abstract ");
@@ -7261,17 +7281,16 @@
     _visitNodeWithPrefix(" ", node.withClause);
     _visitNodeWithPrefix(" ", node.implementsClause);
     _writer.print(";");
-    return null;
   }
 
   @override
-  Object visitComment(Comment node) => null;
+  void visitComment(Comment node) {}
 
   @override
-  Object visitCommentReference(CommentReference node) => null;
+  void visitCommentReference(CommentReference node) {}
 
   @override
-  Object visitCompilationUnit(CompilationUnit node) {
+  void visitCompilationUnit(CompilationUnit node) {
     ScriptTag scriptTag = node.scriptTag;
     NodeList<Directive> directives = node.directives;
     _visitNode(scriptTag);
@@ -7279,31 +7298,28 @@
     _visitNodeListWithSeparatorAndPrefix(prefix, directives, " ");
     prefix = scriptTag == null && directives.isEmpty ? "" : " ";
     _visitNodeListWithSeparatorAndPrefix(prefix, node.declarations, " ");
-    return null;
   }
 
   @override
-  Object visitConditionalExpression(ConditionalExpression node) {
+  void visitConditionalExpression(ConditionalExpression node) {
     _visitNode(node.condition);
     _writer.print(" ? ");
     _visitNode(node.thenExpression);
     _writer.print(" : ");
     _visitNode(node.elseExpression);
-    return null;
   }
 
   @override
-  Object visitConfiguration(Configuration node) {
+  void visitConfiguration(Configuration node) {
     _writer.print('if (');
     _visitNode(node.name);
     _visitNodeWithPrefix(" == ", node.value);
     _writer.print(') ');
     _visitNode(node.uri);
-    return null;
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _visitTokenWithSuffix(node.externalKeyword, " ");
     _visitTokenWithSuffix(node.constKeyword, " ");
@@ -7314,44 +7330,39 @@
     _visitNodeListWithSeparatorAndPrefix(" : ", node.initializers, ", ");
     _visitNodeWithPrefix(" = ", node.redirectedConstructor);
     _visitFunctionWithPrefix(" ", node.body);
-    return null;
   }
 
   @override
-  Object visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
+  void visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
     _visitTokenWithSuffix(node.thisKeyword, ".");
     _visitNode(node.fieldName);
     _writer.print(" = ");
     _visitNode(node.expression);
-    return null;
   }
 
   @override
-  Object visitConstructorName(ConstructorName node) {
+  void visitConstructorName(ConstructorName node) {
     _visitNode(node.type);
     _visitNodeWithPrefix(".", node.name);
-    return null;
   }
 
   @override
-  Object visitContinueStatement(ContinueStatement node) {
+  void visitContinueStatement(ContinueStatement node) {
     _writer.print("continue");
     _visitNodeWithPrefix(" ", node.label);
     _writer.print(";");
-    return null;
   }
 
   @override
-  Object visitDeclaredIdentifier(DeclaredIdentifier node) {
+  void visitDeclaredIdentifier(DeclaredIdentifier node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _visitTokenWithSuffix(node.keyword, " ");
     _visitNodeWithSuffix(node.type, " ");
     _visitNode(node.identifier);
-    return null;
   }
 
   @override
-  Object visitDefaultFormalParameter(DefaultFormalParameter node) {
+  void visitDefaultFormalParameter(DefaultFormalParameter node) {
     _visitNode(node.parameter);
     if (node.separator != null) {
       if (node.separator.lexeme != ":") {
@@ -7360,73 +7371,64 @@
       _writer.print(node.separator.lexeme);
       _visitNodeWithPrefix(" ", node.defaultValue);
     }
-    return null;
   }
 
   @override
-  Object visitDoStatement(DoStatement node) {
+  void visitDoStatement(DoStatement node) {
     _writer.print("do ");
     _visitNode(node.body);
     _writer.print(" while (");
     _visitNode(node.condition);
     _writer.print(");");
-    return null;
   }
 
   @override
-  Object visitDottedName(DottedName node) {
+  void visitDottedName(DottedName node) {
     _visitNodeListWithSeparator(node.components, ".");
-    return null;
   }
 
   @override
-  Object visitDoubleLiteral(DoubleLiteral node) {
+  void visitDoubleLiteral(DoubleLiteral node) {
     _writer.print(node.literal.lexeme);
-    return null;
   }
 
   @override
-  Object visitEmptyFunctionBody(EmptyFunctionBody node) {
+  void visitEmptyFunctionBody(EmptyFunctionBody node) {
     _writer.print(';');
-    return null;
   }
 
   @override
-  Object visitEmptyStatement(EmptyStatement node) {
+  void visitEmptyStatement(EmptyStatement node) {
     _writer.print(';');
-    return null;
   }
 
   @override
-  Object visitEnumConstantDeclaration(EnumConstantDeclaration node) {
+  void visitEnumConstantDeclaration(EnumConstantDeclaration node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _visitNode(node.name);
-    return null;
   }
 
   @override
-  Object visitEnumDeclaration(EnumDeclaration node) {
+  void visitEnumDeclaration(EnumDeclaration node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _writer.print("enum ");
     _visitNode(node.name);
     _writer.print(" {");
     _visitNodeListWithSeparator(node.constants, ", ");
     _writer.print("}");
-    return null;
   }
 
   @override
-  Object visitExportDirective(ExportDirective node) {
+  void visitExportDirective(ExportDirective node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _writer.print("export ");
     _visitNode(node.uri);
     _visitNodeListWithSeparatorAndPrefix(" ", node.combinators, " ");
     _writer.print(';');
-    return null;
   }
 
   @override
-  Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
+  void visitExpressionFunctionBody(ExpressionFunctionBody node) {
     Token keyword = node.keyword;
     if (keyword != null) {
       _writer.print(keyword.lexeme);
@@ -7437,34 +7439,30 @@
     if (node.semicolon != null) {
       _writer.print(';');
     }
-    return null;
   }
 
   @override
-  Object visitExpressionStatement(ExpressionStatement node) {
+  void visitExpressionStatement(ExpressionStatement node) {
     _visitNode(node.expression);
     _writer.print(';');
-    return null;
   }
 
   @override
-  Object visitExtendsClause(ExtendsClause node) {
+  void visitExtendsClause(ExtendsClause node) {
     _writer.print("extends ");
     _visitNode(node.superclass);
-    return null;
   }
 
   @override
-  Object visitFieldDeclaration(FieldDeclaration node) {
+  void visitFieldDeclaration(FieldDeclaration node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _visitTokenWithSuffix(node.staticKeyword, " ");
     _visitNode(node.fields);
     _writer.print(";");
-    return null;
   }
 
   @override
-  Object visitFieldFormalParameter(FieldFormalParameter node) {
+  void visitFieldFormalParameter(FieldFormalParameter node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, ' ', ' ');
     _visitTokenWithSuffix(node.covariantKeyword, ' ');
     _visitTokenWithSuffix(node.keyword, " ");
@@ -7473,11 +7471,10 @@
     _visitNode(node.identifier);
     _visitNode(node.typeParameters);
     _visitNode(node.parameters);
-    return null;
   }
 
   @override
-  Object visitForEachStatement(ForEachStatement node) {
+  void visitForEachStatement(ForEachStatement node) {
     DeclaredIdentifier loopVariable = node.loopVariable;
     if (node.awaitKeyword != null) {
       _writer.print("await ");
@@ -7492,11 +7489,10 @@
     _visitNode(node.iterable);
     _writer.print(") ");
     _visitNode(node.body);
-    return null;
   }
 
   @override
-  Object visitFormalParameterList(FormalParameterList node) {
+  void visitFormalParameterList(FormalParameterList node) {
     String groupEnd = null;
     _writer.print('(');
     NodeList<FormalParameter> parameters = node.parameters;
@@ -7521,11 +7517,10 @@
       _writer.print(groupEnd);
     }
     _writer.print(')');
-    return null;
   }
 
   @override
-  Object visitForStatement(ForStatement node) {
+  void visitForStatement(ForStatement node) {
     Expression initialization = node.initialization;
     _writer.print("for (");
     if (initialization != null) {
@@ -7539,47 +7534,42 @@
     _visitNodeListWithSeparatorAndPrefix(" ", node.updaters, ", ");
     _writer.print(") ");
     _visitNode(node.body);
-    return null;
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _visitTokenWithSuffix(node.externalKeyword, " ");
     _visitNodeWithSuffix(node.returnType, " ");
     _visitTokenWithSuffix(node.propertyKeyword, " ");
     _visitNode(node.name);
     _visitNode(node.functionExpression);
-    return null;
   }
 
   @override
-  Object visitFunctionDeclarationStatement(FunctionDeclarationStatement node) {
+  void visitFunctionDeclarationStatement(FunctionDeclarationStatement node) {
     _visitNode(node.functionDeclaration);
-    return null;
   }
 
   @override
-  Object visitFunctionExpression(FunctionExpression node) {
+  void visitFunctionExpression(FunctionExpression node) {
     _visitNode(node.typeParameters);
     _visitNode(node.parameters);
     if (node.body is! EmptyFunctionBody) {
       _writer.print(' ');
     }
     _visitNode(node.body);
-    return null;
   }
 
   @override
-  Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
+  void visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     _visitNode(node.function);
     _visitNode(node.typeArguments);
     _visitNode(node.argumentList);
-    return null;
   }
 
   @override
-  Object visitFunctionTypeAlias(FunctionTypeAlias node) {
+  void visitFunctionTypeAlias(FunctionTypeAlias node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _writer.print("typedef ");
     _visitNodeWithSuffix(node.returnType, " ");
@@ -7587,66 +7577,59 @@
     _visitNode(node.typeParameters);
     _visitNode(node.parameters);
     _writer.print(";");
-    return null;
   }
 
   @override
-  Object visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
+  void visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, ' ', ' ');
     _visitTokenWithSuffix(node.covariantKeyword, ' ');
     _visitNodeWithSuffix(node.returnType, " ");
     _visitNode(node.identifier);
     _visitNode(node.typeParameters);
     _visitNode(node.parameters);
-    return null;
   }
 
   @override
-  Object visitGenericFunctionType(GenericFunctionType node) {
+  void visitGenericFunctionType(GenericFunctionType node) {
     _visitNode(node.returnType);
     _writer.print(' Function');
     _visitNode(node.typeParameters);
     _visitNode(node.parameters);
-    return null;
   }
 
   @override
-  Object visitGenericTypeAlias(GenericTypeAlias node) {
+  void visitGenericTypeAlias(GenericTypeAlias node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _writer.print("typedef ");
     _visitNode(node.name);
     _visitNode(node.typeParameters);
     _writer.print(" = ");
     _visitNode(node.functionType);
-    return null;
   }
 
   @override
-  Object visitHideCombinator(HideCombinator node) {
+  void visitHideCombinator(HideCombinator node) {
     _writer.print("hide ");
     _visitNodeListWithSeparator(node.hiddenNames, ", ");
-    return null;
   }
 
   @override
-  Object visitIfStatement(IfStatement node) {
+  void visitIfStatement(IfStatement node) {
     _writer.print("if (");
     _visitNode(node.condition);
     _writer.print(") ");
     _visitNode(node.thenStatement);
     _visitNodeWithPrefix(" else ", node.elseStatement);
-    return null;
   }
 
   @override
-  Object visitImplementsClause(ImplementsClause node) {
+  void visitImplementsClause(ImplementsClause node) {
     _writer.print("implements ");
     _visitNodeListWithSeparator(node.interfaces, ", ");
-    return null;
   }
 
   @override
-  Object visitImportDirective(ImportDirective node) {
+  void visitImportDirective(ImportDirective node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _writer.print("import ");
     _visitNode(node.uri);
@@ -7656,11 +7639,10 @@
     _visitNodeWithPrefix(" as ", node.prefix);
     _visitNodeListWithSeparatorAndPrefix(" ", node.combinators, " ");
     _writer.print(';');
-    return null;
   }
 
   @override
-  Object visitIndexExpression(IndexExpression node) {
+  void visitIndexExpression(IndexExpression node) {
     if (node.isCascaded) {
       _writer.print("..");
     } else {
@@ -7669,25 +7651,22 @@
     _writer.print('[');
     _visitNode(node.index);
     _writer.print(']');
-    return null;
   }
 
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     _visitTokenWithSuffix(node.keyword, " ");
     _visitNode(node.constructorName);
     _visitNode(node.argumentList);
-    return null;
   }
 
   @override
-  Object visitIntegerLiteral(IntegerLiteral node) {
+  void visitIntegerLiteral(IntegerLiteral node) {
     _writer.print(node.literal.lexeme);
-    return null;
   }
 
   @override
-  Object visitInterpolationExpression(InterpolationExpression node) {
+  void visitInterpolationExpression(InterpolationExpression node) {
     if (node.rightBracket != null) {
       _writer.print("\${");
       _visitNode(node.expression);
@@ -7696,17 +7675,15 @@
       _writer.print("\$");
       _visitNode(node.expression);
     }
-    return null;
   }
 
   @override
-  Object visitInterpolationString(InterpolationString node) {
+  void visitInterpolationString(InterpolationString node) {
     _writer.print(node.contents.lexeme);
-    return null;
   }
 
   @override
-  Object visitIsExpression(IsExpression node) {
+  void visitIsExpression(IsExpression node) {
     _visitNode(node.expression);
     if (node.notOperator == null) {
       _writer.print(" is ");
@@ -7714,40 +7691,35 @@
       _writer.print(" is! ");
     }
     _visitNode(node.type);
-    return null;
   }
 
   @override
-  Object visitLabel(Label node) {
+  void visitLabel(Label node) {
     _visitNode(node.label);
     _writer.print(":");
-    return null;
   }
 
   @override
-  Object visitLabeledStatement(LabeledStatement node) {
+  void visitLabeledStatement(LabeledStatement node) {
     _visitNodeListWithSeparatorAndSuffix(node.labels, " ", " ");
     _visitNode(node.statement);
-    return null;
   }
 
   @override
-  Object visitLibraryDirective(LibraryDirective node) {
+  void visitLibraryDirective(LibraryDirective node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _writer.print("library ");
     _visitNode(node.name);
     _writer.print(';');
-    return null;
   }
 
   @override
-  Object visitLibraryIdentifier(LibraryIdentifier node) {
+  void visitLibraryIdentifier(LibraryIdentifier node) {
     _writer.print(node.name);
-    return null;
   }
 
   @override
-  Object visitListLiteral(ListLiteral node) {
+  void visitListLiteral(ListLiteral node) {
     if (node.constKeyword != null) {
       _writer.print(node.constKeyword.lexeme);
       _writer.print(' ');
@@ -7756,11 +7728,10 @@
     _writer.print("[");
     _visitNodeListWithSeparator(node.elements, ", ");
     _writer.print("]");
-    return null;
   }
 
   @override
-  Object visitMapLiteral(MapLiteral node) {
+  void visitMapLiteral(MapLiteral node) {
     if (node.constKeyword != null) {
       _writer.print(node.constKeyword.lexeme);
       _writer.print(' ');
@@ -7769,19 +7740,17 @@
     _writer.print("{");
     _visitNodeListWithSeparator(node.entries, ", ");
     _writer.print("}");
-    return null;
   }
 
   @override
-  Object visitMapLiteralEntry(MapLiteralEntry node) {
+  void visitMapLiteralEntry(MapLiteralEntry node) {
     _visitNode(node.key);
     _writer.print(" : ");
     _visitNode(node.value);
-    return null;
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _visitTokenWithSuffix(node.externalKeyword, " ");
     _visitTokenWithSuffix(node.modifierKeyword, " ");
@@ -7794,11 +7763,10 @@
       _visitNode(node.parameters);
     }
     _visitFunctionWithPrefix(" ", node.body);
-    return null;
   }
 
   @override
-  Object visitMethodInvocation(MethodInvocation node) {
+  void visitMethodInvocation(MethodInvocation node) {
     if (node.isCascaded) {
       _writer.print("..");
     } else {
@@ -7810,11 +7778,10 @@
     _visitNode(node.methodName);
     _visitNode(node.typeArguments);
     _visitNode(node.argumentList);
-    return null;
   }
 
   @override
-  bool visitMixinDeclaration(MixinDeclaration node) {
+  void visitMixinDeclaration(MixinDeclaration node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _writer.print("mixin ");
     _visitNode(node.name);
@@ -7824,94 +7791,82 @@
     _writer.print(" {");
     _visitNodeListWithSeparator(node.members, " ");
     _writer.print("}");
-    return null;
   }
 
   @override
-  Object visitNamedExpression(NamedExpression node) {
+  void visitNamedExpression(NamedExpression node) {
     _visitNode(node.name);
     _visitNodeWithPrefix(" ", node.expression);
-    return null;
   }
 
   @override
-  Object visitNativeClause(NativeClause node) {
+  void visitNativeClause(NativeClause node) {
     _writer.print("native ");
     _visitNode(node.name);
-    return null;
   }
 
   @override
-  Object visitNativeFunctionBody(NativeFunctionBody node) {
+  void visitNativeFunctionBody(NativeFunctionBody node) {
     _writer.print("native ");
     _visitNode(node.stringLiteral);
     _writer.print(';');
-    return null;
   }
 
   @override
-  Object visitNullLiteral(NullLiteral node) {
+  void visitNullLiteral(NullLiteral node) {
     _writer.print("null");
-    return null;
   }
 
   @override
-  bool visitOnClause(OnClause node) {
+  void visitOnClause(OnClause node) {
     _writer.print('on ');
     _visitNodeListWithSeparator(node.superclassConstraints, ", ");
-    return null;
   }
 
   @override
-  Object visitParenthesizedExpression(ParenthesizedExpression node) {
+  void visitParenthesizedExpression(ParenthesizedExpression node) {
     _writer.print('(');
     _visitNode(node.expression);
     _writer.print(')');
-    return null;
   }
 
   @override
-  Object visitPartDirective(PartDirective node) {
+  void visitPartDirective(PartDirective node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _writer.print("part ");
     _visitNode(node.uri);
     _writer.print(';');
-    return null;
   }
 
   @override
-  Object visitPartOfDirective(PartOfDirective node) {
+  void visitPartOfDirective(PartOfDirective node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _writer.print("part of ");
     _visitNode(node.libraryName);
     _writer.print(';');
-    return null;
   }
 
   @override
-  Object visitPostfixExpression(PostfixExpression node) {
+  void visitPostfixExpression(PostfixExpression node) {
     _visitNode(node.operand);
     _writer.print(node.operator.lexeme);
-    return null;
   }
 
   @override
-  Object visitPrefixedIdentifier(PrefixedIdentifier node) {
+  void visitPrefixedIdentifier(PrefixedIdentifier node) {
     _visitNode(node.prefix);
     _writer.print('.');
     _visitNode(node.identifier);
-    return null;
   }
 
   @override
-  Object visitPrefixExpression(PrefixExpression node) {
+  void visitPrefixExpression(PrefixExpression node) {
     _writer.print(node.operator.lexeme);
     _visitNode(node.operand);
-    return null;
   }
 
   @override
-  Object visitPropertyAccess(PropertyAccess node) {
+  void visitPropertyAccess(PropertyAccess node) {
     if (node.isCascaded) {
       _writer.print("..");
     } else {
@@ -7919,26 +7874,23 @@
       _writer.print(node.operator.lexeme);
     }
     _visitNode(node.propertyName);
-    return null;
   }
 
   @override
-  Object visitRedirectingConstructorInvocation(
+  void visitRedirectingConstructorInvocation(
       RedirectingConstructorInvocation node) {
     _writer.print("this");
     _visitNodeWithPrefix(".", node.constructorName);
     _visitNode(node.argumentList);
-    return null;
   }
 
   @override
-  Object visitRethrowExpression(RethrowExpression node) {
+  void visitRethrowExpression(RethrowExpression node) {
     _writer.print("rethrow");
-    return null;
   }
 
   @override
-  Object visitReturnStatement(ReturnStatement node) {
+  void visitReturnStatement(ReturnStatement node) {
     Expression expression = node.expression;
     if (expression == null) {
       _writer.print("return;");
@@ -7947,24 +7899,33 @@
       expression.accept(this);
       _writer.print(";");
     }
-    return null;
   }
 
   @override
-  Object visitScriptTag(ScriptTag node) {
+  void visitScriptTag(ScriptTag node) {
     _writer.print(node.scriptTag.lexeme);
-    return null;
   }
 
   @override
-  Object visitShowCombinator(ShowCombinator node) {
+  void visitSetLiteral(SetLiteral node) {
+    if (node.constKeyword != null) {
+      _writer.print(node.constKeyword.lexeme);
+      _writer.print(' ');
+    }
+    _visitNodeWithSuffix(node.typeArguments, " ");
+    _writer.print("{");
+    _visitNodeListWithSeparator(node.elements, ", ");
+    _writer.print("}");
+  }
+
+  @override
+  void visitShowCombinator(ShowCombinator node) {
     _writer.print("show ");
     _visitNodeListWithSeparator(node.shownNames, ", ");
-    return null;
   }
 
   @override
-  Object visitSimpleFormalParameter(SimpleFormalParameter node) {
+  void visitSimpleFormalParameter(SimpleFormalParameter node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, ' ', ' ');
     _visitTokenWithSuffix(node.covariantKeyword, ' ');
     _visitTokenWithSuffix(node.keyword, " ");
@@ -7973,71 +7934,62 @@
       _writer.print(' ');
     }
     _visitNode(node.identifier);
-    return null;
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     _writer.print(node.token.lexeme);
-    return null;
   }
 
   @override
-  Object visitSimpleStringLiteral(SimpleStringLiteral node) {
+  void visitSimpleStringLiteral(SimpleStringLiteral node) {
     _writer.print(node.literal.lexeme);
-    return null;
   }
 
   @override
-  Object visitStringInterpolation(StringInterpolation node) {
+  void visitStringInterpolation(StringInterpolation node) {
     _visitNodeList(node.elements);
-    return null;
   }
 
   @override
-  Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
+  void visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     _writer.print("super");
     _visitNodeWithPrefix(".", node.constructorName);
     _visitNode(node.argumentList);
-    return null;
   }
 
   @override
-  Object visitSuperExpression(SuperExpression node) {
+  void visitSuperExpression(SuperExpression node) {
     _writer.print("super");
-    return null;
   }
 
   @override
-  Object visitSwitchCase(SwitchCase node) {
+  void visitSwitchCase(SwitchCase node) {
     _visitNodeListWithSeparatorAndSuffix(node.labels, " ", " ");
     _writer.print("case ");
     _visitNode(node.expression);
     _writer.print(": ");
     _visitNodeListWithSeparator(node.statements, " ");
-    return null;
   }
 
   @override
-  Object visitSwitchDefault(SwitchDefault node) {
+  void visitSwitchDefault(SwitchDefault node) {
     _visitNodeListWithSeparatorAndSuffix(node.labels, " ", " ");
     _writer.print("default: ");
     _visitNodeListWithSeparator(node.statements, " ");
-    return null;
   }
 
   @override
-  Object visitSwitchStatement(SwitchStatement node) {
+  void visitSwitchStatement(SwitchStatement node) {
     _writer.print("switch (");
     _visitNode(node.expression);
     _writer.print(") {");
     _visitNodeListWithSeparator(node.members, " ");
     _writer.print("}");
-    return null;
   }
 
   @override
-  Object visitSymbolLiteral(SymbolLiteral node) {
+  void visitSymbolLiteral(SymbolLiteral node) {
     _writer.print("#");
     List<Token> components = node.components;
     for (int i = 0; i < components.length; i++) {
@@ -8046,110 +7998,96 @@
       }
       _writer.print(components[i].lexeme);
     }
-    return null;
   }
 
   @override
-  Object visitThisExpression(ThisExpression node) {
+  void visitThisExpression(ThisExpression node) {
     _writer.print("this");
-    return null;
   }
 
   @override
-  Object visitThrowExpression(ThrowExpression node) {
+  void visitThrowExpression(ThrowExpression node) {
     _writer.print("throw ");
     _visitNode(node.expression);
-    return null;
   }
 
   @override
-  Object visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
+  void visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
     _visitNodeWithSuffix(node.variables, ";");
-    return null;
   }
 
   @override
-  Object visitTryStatement(TryStatement node) {
+  void visitTryStatement(TryStatement node) {
     _writer.print("try ");
     _visitNode(node.body);
     _visitNodeListWithSeparatorAndPrefix(" ", node.catchClauses, " ");
     _visitNodeWithPrefix(" finally ", node.finallyBlock);
-    return null;
   }
 
   @override
-  Object visitTypeArgumentList(TypeArgumentList node) {
+  void visitTypeArgumentList(TypeArgumentList node) {
     _writer.print('<');
     _visitNodeListWithSeparator(node.arguments, ", ");
     _writer.print('>');
-    return null;
   }
 
   @override
-  Object visitTypeName(TypeName node) {
+  void visitTypeName(TypeName node) {
     _visitNode(node.name);
     _visitNode(node.typeArguments);
-    return null;
   }
 
   @override
-  Object visitTypeParameter(TypeParameter node) {
+  void visitTypeParameter(TypeParameter node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _visitNode(node.name);
     _visitNodeWithPrefix(" extends ", node.bound);
-    return null;
   }
 
   @override
-  Object visitTypeParameterList(TypeParameterList node) {
+  void visitTypeParameterList(TypeParameterList node) {
     _writer.print('<');
     _visitNodeListWithSeparator(node.typeParameters, ", ");
     _writer.print('>');
-    return null;
   }
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _visitNode(node.name);
     _visitNodeWithPrefix(" = ", node.initializer);
-    return null;
   }
 
   @override
-  Object visitVariableDeclarationList(VariableDeclarationList node) {
+  void visitVariableDeclarationList(VariableDeclarationList node) {
     _visitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     _visitTokenWithSuffix(node.keyword, " ");
     _visitNodeWithSuffix(node.type, " ");
     _visitNodeListWithSeparator(node.variables, ", ");
-    return null;
   }
 
   @override
-  Object visitVariableDeclarationStatement(VariableDeclarationStatement node) {
+  void visitVariableDeclarationStatement(VariableDeclarationStatement node) {
     _visitNode(node.variables);
     _writer.print(";");
-    return null;
   }
 
   @override
-  Object visitWhileStatement(WhileStatement node) {
+  void visitWhileStatement(WhileStatement node) {
     _writer.print("while (");
     _visitNode(node.condition);
     _writer.print(") ");
     _visitNode(node.body);
-    return null;
   }
 
   @override
-  Object visitWithClause(WithClause node) {
+  void visitWithClause(WithClause node) {
     _writer.print("with ");
     _visitNodeListWithSeparator(node.mixinTypes, ", ");
-    return null;
   }
 
   @override
-  Object visitYieldStatement(YieldStatement node) {
+  void visitYieldStatement(YieldStatement node) {
     if (node.star != null) {
       _writer.print("yield* ");
     } else {
@@ -8157,7 +8095,6 @@
     }
     _visitNode(node.expression);
     _writer.print(";");
-    return null;
   }
 
   /**
@@ -8280,7 +8217,7 @@
  * A visitor used to write a source representation of a visited AST node (and
  * all of it's children) to a sink.
  */
-class ToSourceVisitor2 implements AstVisitor<Object> {
+class ToSourceVisitor2 implements AstVisitor<void> {
   /**
    * The sink to which the source is to be written.
    */
@@ -8419,38 +8356,34 @@
   }
 
   @override
-  Object visitAdjacentStrings(AdjacentStrings node) {
+  void visitAdjacentStrings(AdjacentStrings node) {
     safelyVisitNodeListWithSeparator(node.strings, " ");
-    return null;
   }
 
   @override
-  Object visitAnnotation(Annotation node) {
+  void visitAnnotation(Annotation node) {
     sink.write('@');
     safelyVisitNode(node.name);
     safelyVisitNodeWithPrefix(".", node.constructorName);
     safelyVisitNode(node.arguments);
-    return null;
   }
 
   @override
-  Object visitArgumentList(ArgumentList node) {
+  void visitArgumentList(ArgumentList node) {
     sink.write('(');
     safelyVisitNodeListWithSeparator(node.arguments, ", ");
     sink.write(')');
-    return null;
   }
 
   @override
-  Object visitAsExpression(AsExpression node) {
+  void visitAsExpression(AsExpression node) {
     safelyVisitNode(node.expression);
     sink.write(" as ");
     safelyVisitNode(node.type);
-    return null;
   }
 
   @override
-  bool visitAssertInitializer(AssertInitializer node) {
+  void visitAssertInitializer(AssertInitializer node) {
     sink.write("assert (");
     safelyVisitNode(node.condition);
     if (node.message != null) {
@@ -8458,11 +8391,10 @@
       safelyVisitNode(node.message);
     }
     sink.write(");");
-    return null;
   }
 
   @override
-  Object visitAssertStatement(AssertStatement node) {
+  void visitAssertStatement(AssertStatement node) {
     sink.write("assert (");
     safelyVisitNode(node.condition);
     if (node.message != null) {
@@ -8470,46 +8402,41 @@
       safelyVisitNode(node.message);
     }
     sink.write(");");
-    return null;
   }
 
   @override
-  Object visitAssignmentExpression(AssignmentExpression node) {
+  void visitAssignmentExpression(AssignmentExpression node) {
     safelyVisitNode(node.leftHandSide);
     sink.write(' ');
     sink.write(node.operator.lexeme);
     sink.write(' ');
     safelyVisitNode(node.rightHandSide);
-    return null;
   }
 
   @override
-  Object visitAwaitExpression(AwaitExpression node) {
+  void visitAwaitExpression(AwaitExpression node) {
     sink.write("await ");
     safelyVisitNode(node.expression);
-    return null;
   }
 
   @override
-  Object visitBinaryExpression(BinaryExpression node) {
+  void visitBinaryExpression(BinaryExpression node) {
     _writeOperand(node, node.leftOperand);
     sink.write(' ');
     sink.write(node.operator.lexeme);
     sink.write(' ');
     _writeOperand(node, node.rightOperand);
-    return null;
   }
 
   @override
-  Object visitBlock(Block node) {
+  void visitBlock(Block node) {
     sink.write('{');
     safelyVisitNodeListWithSeparator(node.statements, " ");
     sink.write('}');
-    return null;
   }
 
   @override
-  Object visitBlockFunctionBody(BlockFunctionBody node) {
+  void visitBlockFunctionBody(BlockFunctionBody node) {
     Token keyword = node.keyword;
     if (keyword != null) {
       sink.write(keyword.lexeme);
@@ -8519,32 +8446,28 @@
       sink.write(' ');
     }
     safelyVisitNode(node.block);
-    return null;
   }
 
   @override
-  Object visitBooleanLiteral(BooleanLiteral node) {
+  void visitBooleanLiteral(BooleanLiteral node) {
     sink.write(node.literal.lexeme);
-    return null;
   }
 
   @override
-  Object visitBreakStatement(BreakStatement node) {
+  void visitBreakStatement(BreakStatement node) {
     sink.write("break");
     safelyVisitNodeWithPrefix(" ", node.label);
     sink.write(";");
-    return null;
   }
 
   @override
-  Object visitCascadeExpression(CascadeExpression node) {
+  void visitCascadeExpression(CascadeExpression node) {
     safelyVisitNode(node.target);
     safelyVisitNodeList(node.cascadeSections);
-    return null;
   }
 
   @override
-  Object visitCatchClause(CatchClause node) {
+  void visitCatchClause(CatchClause node) {
     safelyVisitNodeWithPrefix("on ", node.exceptionType);
     if (node.catchKeyword != null) {
       if (node.exceptionType != null) {
@@ -8558,11 +8481,10 @@
       sink.write(" ");
     }
     safelyVisitNode(node.body);
-    return null;
   }
 
   @override
-  Object visitClassDeclaration(ClassDeclaration node) {
+  void visitClassDeclaration(ClassDeclaration node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     safelyVisitTokenWithSuffix(node.abstractKeyword, " ");
     sink.write("class ");
@@ -8574,11 +8496,10 @@
     sink.write(" {");
     safelyVisitNodeListWithSeparator(node.members, " ");
     sink.write("}");
-    return null;
   }
 
   @override
-  Object visitClassTypeAlias(ClassTypeAlias node) {
+  void visitClassTypeAlias(ClassTypeAlias node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     if (node.abstractKeyword != null) {
       sink.write("abstract ");
@@ -8591,17 +8512,16 @@
     safelyVisitNodeWithPrefix(" ", node.withClause);
     safelyVisitNodeWithPrefix(" ", node.implementsClause);
     sink.write(";");
-    return null;
   }
 
   @override
-  Object visitComment(Comment node) => null;
+  void visitComment(Comment node) {}
 
   @override
-  Object visitCommentReference(CommentReference node) => null;
+  void visitCommentReference(CommentReference node) {}
 
   @override
-  Object visitCompilationUnit(CompilationUnit node) {
+  void visitCompilationUnit(CompilationUnit node) {
     ScriptTag scriptTag = node.scriptTag;
     NodeList<Directive> directives = node.directives;
     safelyVisitNode(scriptTag);
@@ -8609,31 +8529,28 @@
     safelyVisitNodeListWithSeparatorAndPrefix(prefix, directives, " ");
     prefix = scriptTag == null && directives.isEmpty ? "" : " ";
     safelyVisitNodeListWithSeparatorAndPrefix(prefix, node.declarations, " ");
-    return null;
   }
 
   @override
-  Object visitConditionalExpression(ConditionalExpression node) {
+  void visitConditionalExpression(ConditionalExpression node) {
     safelyVisitNode(node.condition);
     sink.write(" ? ");
     safelyVisitNode(node.thenExpression);
     sink.write(" : ");
     safelyVisitNode(node.elseExpression);
-    return null;
   }
 
   @override
-  Object visitConfiguration(Configuration node) {
+  void visitConfiguration(Configuration node) {
     sink.write('if (');
     safelyVisitNode(node.name);
     safelyVisitNodeWithPrefix(" == ", node.value);
     sink.write(') ');
     safelyVisitNode(node.uri);
-    return null;
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     safelyVisitTokenWithSuffix(node.externalKeyword, " ");
     safelyVisitTokenWithSuffix(node.constKeyword, " ");
@@ -8644,44 +8561,39 @@
     safelyVisitNodeListWithSeparatorAndPrefix(" : ", node.initializers, ", ");
     safelyVisitNodeWithPrefix(" = ", node.redirectedConstructor);
     safelyVisitFunctionWithPrefix(" ", node.body);
-    return null;
   }
 
   @override
-  Object visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
+  void visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
     safelyVisitTokenWithSuffix(node.thisKeyword, ".");
     safelyVisitNode(node.fieldName);
     sink.write(" = ");
     safelyVisitNode(node.expression);
-    return null;
   }
 
   @override
-  Object visitConstructorName(ConstructorName node) {
+  void visitConstructorName(ConstructorName node) {
     safelyVisitNode(node.type);
     safelyVisitNodeWithPrefix(".", node.name);
-    return null;
   }
 
   @override
-  Object visitContinueStatement(ContinueStatement node) {
+  void visitContinueStatement(ContinueStatement node) {
     sink.write("continue");
     safelyVisitNodeWithPrefix(" ", node.label);
     sink.write(";");
-    return null;
   }
 
   @override
-  Object visitDeclaredIdentifier(DeclaredIdentifier node) {
+  void visitDeclaredIdentifier(DeclaredIdentifier node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     safelyVisitTokenWithSuffix(node.keyword, " ");
     safelyVisitNodeWithSuffix(node.type, " ");
     safelyVisitNode(node.identifier);
-    return null;
   }
 
   @override
-  Object visitDefaultFormalParameter(DefaultFormalParameter node) {
+  void visitDefaultFormalParameter(DefaultFormalParameter node) {
     safelyVisitNode(node.parameter);
     if (node.separator != null) {
       if (node.separator.lexeme != ":") {
@@ -8690,73 +8602,64 @@
       sink.write(node.separator.lexeme);
       safelyVisitNodeWithPrefix(" ", node.defaultValue);
     }
-    return null;
   }
 
   @override
-  Object visitDoStatement(DoStatement node) {
+  void visitDoStatement(DoStatement node) {
     sink.write("do ");
     safelyVisitNode(node.body);
     sink.write(" while (");
     safelyVisitNode(node.condition);
     sink.write(");");
-    return null;
   }
 
   @override
-  Object visitDottedName(DottedName node) {
+  void visitDottedName(DottedName node) {
     safelyVisitNodeListWithSeparator(node.components, ".");
-    return null;
   }
 
   @override
-  Object visitDoubleLiteral(DoubleLiteral node) {
+  void visitDoubleLiteral(DoubleLiteral node) {
     sink.write(node.literal.lexeme);
-    return null;
   }
 
   @override
-  Object visitEmptyFunctionBody(EmptyFunctionBody node) {
+  void visitEmptyFunctionBody(EmptyFunctionBody node) {
     sink.write(';');
-    return null;
   }
 
   @override
-  Object visitEmptyStatement(EmptyStatement node) {
+  void visitEmptyStatement(EmptyStatement node) {
     sink.write(';');
-    return null;
   }
 
   @override
-  Object visitEnumConstantDeclaration(EnumConstantDeclaration node) {
+  void visitEnumConstantDeclaration(EnumConstantDeclaration node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     safelyVisitNode(node.name);
-    return null;
   }
 
   @override
-  Object visitEnumDeclaration(EnumDeclaration node) {
+  void visitEnumDeclaration(EnumDeclaration node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     sink.write("enum ");
     safelyVisitNode(node.name);
     sink.write(" {");
     safelyVisitNodeListWithSeparator(node.constants, ", ");
     sink.write("}");
-    return null;
   }
 
   @override
-  Object visitExportDirective(ExportDirective node) {
+  void visitExportDirective(ExportDirective node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     sink.write("export ");
     safelyVisitNode(node.uri);
     safelyVisitNodeListWithSeparatorAndPrefix(" ", node.combinators, " ");
     sink.write(';');
-    return null;
   }
 
   @override
-  Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
+  void visitExpressionFunctionBody(ExpressionFunctionBody node) {
     Token keyword = node.keyword;
     if (keyword != null) {
       sink.write(keyword.lexeme);
@@ -8767,34 +8670,30 @@
     if (node.semicolon != null) {
       sink.write(';');
     }
-    return null;
   }
 
   @override
-  Object visitExpressionStatement(ExpressionStatement node) {
+  void visitExpressionStatement(ExpressionStatement node) {
     safelyVisitNode(node.expression);
     sink.write(';');
-    return null;
   }
 
   @override
-  Object visitExtendsClause(ExtendsClause node) {
+  void visitExtendsClause(ExtendsClause node) {
     sink.write("extends ");
     safelyVisitNode(node.superclass);
-    return null;
   }
 
   @override
-  Object visitFieldDeclaration(FieldDeclaration node) {
+  void visitFieldDeclaration(FieldDeclaration node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     safelyVisitTokenWithSuffix(node.staticKeyword, " ");
     safelyVisitNode(node.fields);
     sink.write(";");
-    return null;
   }
 
   @override
-  Object visitFieldFormalParameter(FieldFormalParameter node) {
+  void visitFieldFormalParameter(FieldFormalParameter node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, ' ', ' ');
     safelyVisitTokenWithSuffix(node.covariantKeyword, ' ');
     safelyVisitTokenWithSuffix(node.keyword, " ");
@@ -8803,11 +8702,10 @@
     safelyVisitNode(node.identifier);
     safelyVisitNode(node.typeParameters);
     safelyVisitNode(node.parameters);
-    return null;
   }
 
   @override
-  Object visitForEachStatement(ForEachStatement node) {
+  void visitForEachStatement(ForEachStatement node) {
     DeclaredIdentifier loopVariable = node.loopVariable;
     if (node.awaitKeyword != null) {
       sink.write("await ");
@@ -8822,11 +8720,10 @@
     safelyVisitNode(node.iterable);
     sink.write(") ");
     safelyVisitNode(node.body);
-    return null;
   }
 
   @override
-  Object visitFormalParameterList(FormalParameterList node) {
+  void visitFormalParameterList(FormalParameterList node) {
     String groupEnd = null;
     sink.write('(');
     NodeList<FormalParameter> parameters = node.parameters;
@@ -8851,11 +8748,10 @@
       sink.write(groupEnd);
     }
     sink.write(')');
-    return null;
   }
 
   @override
-  Object visitForStatement(ForStatement node) {
+  void visitForStatement(ForStatement node) {
     Expression initialization = node.initialization;
     sink.write("for (");
     if (initialization != null) {
@@ -8869,47 +8765,42 @@
     safelyVisitNodeListWithSeparatorAndPrefix(" ", node.updaters, ", ");
     sink.write(") ");
     safelyVisitNode(node.body);
-    return null;
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     safelyVisitTokenWithSuffix(node.externalKeyword, " ");
     safelyVisitNodeWithSuffix(node.returnType, " ");
     safelyVisitTokenWithSuffix(node.propertyKeyword, " ");
     safelyVisitNode(node.name);
     safelyVisitNode(node.functionExpression);
-    return null;
   }
 
   @override
-  Object visitFunctionDeclarationStatement(FunctionDeclarationStatement node) {
+  void visitFunctionDeclarationStatement(FunctionDeclarationStatement node) {
     safelyVisitNode(node.functionDeclaration);
-    return null;
   }
 
   @override
-  Object visitFunctionExpression(FunctionExpression node) {
+  void visitFunctionExpression(FunctionExpression node) {
     safelyVisitNode(node.typeParameters);
     safelyVisitNode(node.parameters);
     if (node.body is! EmptyFunctionBody) {
       sink.write(' ');
     }
     safelyVisitNode(node.body);
-    return null;
   }
 
   @override
-  Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
+  void visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     safelyVisitNode(node.function);
     safelyVisitNode(node.typeArguments);
     safelyVisitNode(node.argumentList);
-    return null;
   }
 
   @override
-  Object visitFunctionTypeAlias(FunctionTypeAlias node) {
+  void visitFunctionTypeAlias(FunctionTypeAlias node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     sink.write("typedef ");
     safelyVisitNodeWithSuffix(node.returnType, " ");
@@ -8917,66 +8808,59 @@
     safelyVisitNode(node.typeParameters);
     safelyVisitNode(node.parameters);
     sink.write(";");
-    return null;
   }
 
   @override
-  Object visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
+  void visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, ' ', ' ');
     safelyVisitTokenWithSuffix(node.covariantKeyword, ' ');
     safelyVisitNodeWithSuffix(node.returnType, " ");
     safelyVisitNode(node.identifier);
     safelyVisitNode(node.typeParameters);
     safelyVisitNode(node.parameters);
-    return null;
   }
 
   @override
-  Object visitGenericFunctionType(GenericFunctionType node) {
+  void visitGenericFunctionType(GenericFunctionType node) {
     safelyVisitNode(node.returnType);
     sink.write(' Function');
     safelyVisitNode(node.typeParameters);
     safelyVisitNode(node.parameters);
-    return null;
   }
 
   @override
-  Object visitGenericTypeAlias(GenericTypeAlias node) {
+  void visitGenericTypeAlias(GenericTypeAlias node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     sink.write("typedef ");
     safelyVisitNode(node.name);
     safelyVisitNode(node.typeParameters);
     sink.write(" = ");
     safelyVisitNode(node.functionType);
-    return null;
   }
 
   @override
-  Object visitHideCombinator(HideCombinator node) {
+  void visitHideCombinator(HideCombinator node) {
     sink.write("hide ");
     safelyVisitNodeListWithSeparator(node.hiddenNames, ", ");
-    return null;
   }
 
   @override
-  Object visitIfStatement(IfStatement node) {
+  void visitIfStatement(IfStatement node) {
     sink.write("if (");
     safelyVisitNode(node.condition);
     sink.write(") ");
     safelyVisitNode(node.thenStatement);
     safelyVisitNodeWithPrefix(" else ", node.elseStatement);
-    return null;
   }
 
   @override
-  Object visitImplementsClause(ImplementsClause node) {
+  void visitImplementsClause(ImplementsClause node) {
     sink.write("implements ");
     safelyVisitNodeListWithSeparator(node.interfaces, ", ");
-    return null;
   }
 
   @override
-  Object visitImportDirective(ImportDirective node) {
+  void visitImportDirective(ImportDirective node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     sink.write("import ");
     safelyVisitNode(node.uri);
@@ -8986,11 +8870,10 @@
     safelyVisitNodeWithPrefix(" as ", node.prefix);
     safelyVisitNodeListWithSeparatorAndPrefix(" ", node.combinators, " ");
     sink.write(';');
-    return null;
   }
 
   @override
-  Object visitIndexExpression(IndexExpression node) {
+  void visitIndexExpression(IndexExpression node) {
     if (node.isCascaded) {
       sink.write("..");
     } else {
@@ -8999,25 +8882,22 @@
     sink.write('[');
     safelyVisitNode(node.index);
     sink.write(']');
-    return null;
   }
 
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     safelyVisitTokenWithSuffix(node.keyword, " ");
     safelyVisitNode(node.constructorName);
     safelyVisitNode(node.argumentList);
-    return null;
   }
 
   @override
-  Object visitIntegerLiteral(IntegerLiteral node) {
+  void visitIntegerLiteral(IntegerLiteral node) {
     sink.write(node.literal.lexeme);
-    return null;
   }
 
   @override
-  Object visitInterpolationExpression(InterpolationExpression node) {
+  void visitInterpolationExpression(InterpolationExpression node) {
     if (node.rightBracket != null) {
       sink.write("\${");
       safelyVisitNode(node.expression);
@@ -9026,17 +8906,15 @@
       sink.write("\$");
       safelyVisitNode(node.expression);
     }
-    return null;
   }
 
   @override
-  Object visitInterpolationString(InterpolationString node) {
+  void visitInterpolationString(InterpolationString node) {
     sink.write(node.contents.lexeme);
-    return null;
   }
 
   @override
-  Object visitIsExpression(IsExpression node) {
+  void visitIsExpression(IsExpression node) {
     safelyVisitNode(node.expression);
     if (node.notOperator == null) {
       sink.write(" is ");
@@ -9044,40 +8922,35 @@
       sink.write(" is! ");
     }
     safelyVisitNode(node.type);
-    return null;
   }
 
   @override
-  Object visitLabel(Label node) {
+  void visitLabel(Label node) {
     safelyVisitNode(node.label);
     sink.write(":");
-    return null;
   }
 
   @override
-  Object visitLabeledStatement(LabeledStatement node) {
+  void visitLabeledStatement(LabeledStatement node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.labels, " ", " ");
     safelyVisitNode(node.statement);
-    return null;
   }
 
   @override
-  Object visitLibraryDirective(LibraryDirective node) {
+  void visitLibraryDirective(LibraryDirective node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     sink.write("library ");
     safelyVisitNode(node.name);
     sink.write(';');
-    return null;
   }
 
   @override
-  Object visitLibraryIdentifier(LibraryIdentifier node) {
+  void visitLibraryIdentifier(LibraryIdentifier node) {
     sink.write(node.name);
-    return null;
   }
 
   @override
-  Object visitListLiteral(ListLiteral node) {
+  void visitListLiteral(ListLiteral node) {
     if (node.constKeyword != null) {
       sink.write(node.constKeyword.lexeme);
       sink.write(' ');
@@ -9086,11 +8959,10 @@
     sink.write("[");
     safelyVisitNodeListWithSeparator(node.elements, ", ");
     sink.write("]");
-    return null;
   }
 
   @override
-  Object visitMapLiteral(MapLiteral node) {
+  void visitMapLiteral(MapLiteral node) {
     if (node.constKeyword != null) {
       sink.write(node.constKeyword.lexeme);
       sink.write(' ');
@@ -9099,19 +8971,17 @@
     sink.write("{");
     safelyVisitNodeListWithSeparator(node.entries, ", ");
     sink.write("}");
-    return null;
   }
 
   @override
-  Object visitMapLiteralEntry(MapLiteralEntry node) {
+  void visitMapLiteralEntry(MapLiteralEntry node) {
     safelyVisitNode(node.key);
     sink.write(" : ");
     safelyVisitNode(node.value);
-    return null;
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     safelyVisitTokenWithSuffix(node.externalKeyword, " ");
     safelyVisitTokenWithSuffix(node.modifierKeyword, " ");
@@ -9124,11 +8994,10 @@
       safelyVisitNode(node.parameters);
     }
     safelyVisitFunctionWithPrefix(" ", node.body);
-    return null;
   }
 
   @override
-  Object visitMethodInvocation(MethodInvocation node) {
+  void visitMethodInvocation(MethodInvocation node) {
     if (node.isCascaded) {
       sink.write("..");
     } else {
@@ -9140,11 +9009,10 @@
     safelyVisitNode(node.methodName);
     safelyVisitNode(node.typeArguments);
     safelyVisitNode(node.argumentList);
-    return null;
   }
 
   @override
-  bool visitMixinDeclaration(MixinDeclaration node) {
+  void visitMixinDeclaration(MixinDeclaration node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     sink.write("mixin ");
     safelyVisitNode(node.name);
@@ -9154,94 +9022,82 @@
     sink.write(" {");
     safelyVisitNodeListWithSeparator(node.members, " ");
     sink.write("}");
-    return null;
   }
 
   @override
-  Object visitNamedExpression(NamedExpression node) {
+  void visitNamedExpression(NamedExpression node) {
     safelyVisitNode(node.name);
     safelyVisitNodeWithPrefix(" ", node.expression);
-    return null;
   }
 
   @override
-  Object visitNativeClause(NativeClause node) {
+  void visitNativeClause(NativeClause node) {
     sink.write("native ");
     safelyVisitNode(node.name);
-    return null;
   }
 
   @override
-  Object visitNativeFunctionBody(NativeFunctionBody node) {
+  void visitNativeFunctionBody(NativeFunctionBody node) {
     sink.write("native ");
     safelyVisitNode(node.stringLiteral);
     sink.write(';');
-    return null;
   }
 
   @override
-  Object visitNullLiteral(NullLiteral node) {
+  void visitNullLiteral(NullLiteral node) {
     sink.write("null");
-    return null;
   }
 
   @override
-  bool visitOnClause(OnClause node) {
+  void visitOnClause(OnClause node) {
     sink.write('on ');
     safelyVisitNodeListWithSeparator(node.superclassConstraints, ", ");
-    return null;
   }
 
   @override
-  Object visitParenthesizedExpression(ParenthesizedExpression node) {
+  void visitParenthesizedExpression(ParenthesizedExpression node) {
     sink.write('(');
     safelyVisitNode(node.expression);
     sink.write(')');
-    return null;
   }
 
   @override
-  Object visitPartDirective(PartDirective node) {
+  void visitPartDirective(PartDirective node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     sink.write("part ");
     safelyVisitNode(node.uri);
     sink.write(';');
-    return null;
   }
 
   @override
-  Object visitPartOfDirective(PartOfDirective node) {
+  void visitPartOfDirective(PartOfDirective node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     sink.write("part of ");
     safelyVisitNode(node.libraryName);
     sink.write(';');
-    return null;
   }
 
   @override
-  Object visitPostfixExpression(PostfixExpression node) {
+  void visitPostfixExpression(PostfixExpression node) {
     _writeOperand(node, node.operand);
     sink.write(node.operator.lexeme);
-    return null;
   }
 
   @override
-  Object visitPrefixedIdentifier(PrefixedIdentifier node) {
+  void visitPrefixedIdentifier(PrefixedIdentifier node) {
     safelyVisitNode(node.prefix);
     sink.write('.');
     safelyVisitNode(node.identifier);
-    return null;
   }
 
   @override
-  Object visitPrefixExpression(PrefixExpression node) {
+  void visitPrefixExpression(PrefixExpression node) {
     sink.write(node.operator.lexeme);
     _writeOperand(node, node.operand);
-    return null;
   }
 
   @override
-  Object visitPropertyAccess(PropertyAccess node) {
+  void visitPropertyAccess(PropertyAccess node) {
     if (node.isCascaded) {
       sink.write("..");
     } else {
@@ -9249,26 +9105,23 @@
       sink.write(node.operator.lexeme);
     }
     safelyVisitNode(node.propertyName);
-    return null;
   }
 
   @override
-  Object visitRedirectingConstructorInvocation(
+  void visitRedirectingConstructorInvocation(
       RedirectingConstructorInvocation node) {
     sink.write("this");
     safelyVisitNodeWithPrefix(".", node.constructorName);
     safelyVisitNode(node.argumentList);
-    return null;
   }
 
   @override
-  Object visitRethrowExpression(RethrowExpression node) {
+  void visitRethrowExpression(RethrowExpression node) {
     sink.write("rethrow");
-    return null;
   }
 
   @override
-  Object visitReturnStatement(ReturnStatement node) {
+  void visitReturnStatement(ReturnStatement node) {
     Expression expression = node.expression;
     if (expression == null) {
       sink.write("return;");
@@ -9277,24 +9130,33 @@
       expression.accept(this);
       sink.write(";");
     }
-    return null;
   }
 
   @override
-  Object visitScriptTag(ScriptTag node) {
+  void visitScriptTag(ScriptTag node) {
     sink.write(node.scriptTag.lexeme);
-    return null;
   }
 
   @override
-  Object visitShowCombinator(ShowCombinator node) {
+  void visitSetLiteral(SetLiteral node) {
+    if (node.constKeyword != null) {
+      sink.write(node.constKeyword.lexeme);
+      sink.write(' ');
+    }
+    safelyVisitNodeWithSuffix(node.typeArguments, " ");
+    sink.write("{");
+    safelyVisitNodeListWithSeparator(node.elements, ", ");
+    sink.write("}");
+  }
+
+  @override
+  void visitShowCombinator(ShowCombinator node) {
     sink.write("show ");
     safelyVisitNodeListWithSeparator(node.shownNames, ", ");
-    return null;
   }
 
   @override
-  Object visitSimpleFormalParameter(SimpleFormalParameter node) {
+  void visitSimpleFormalParameter(SimpleFormalParameter node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, ' ', ' ');
     safelyVisitTokenWithSuffix(node.covariantKeyword, ' ');
     safelyVisitTokenWithSuffix(node.keyword, " ");
@@ -9303,71 +9165,62 @@
       sink.write(' ');
     }
     safelyVisitNode(node.identifier);
-    return null;
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     sink.write(node.token.lexeme);
-    return null;
   }
 
   @override
-  Object visitSimpleStringLiteral(SimpleStringLiteral node) {
+  void visitSimpleStringLiteral(SimpleStringLiteral node) {
     sink.write(node.literal.lexeme);
-    return null;
   }
 
   @override
-  Object visitStringInterpolation(StringInterpolation node) {
+  void visitStringInterpolation(StringInterpolation node) {
     safelyVisitNodeList(node.elements);
-    return null;
   }
 
   @override
-  Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
+  void visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     sink.write("super");
     safelyVisitNodeWithPrefix(".", node.constructorName);
     safelyVisitNode(node.argumentList);
-    return null;
   }
 
   @override
-  Object visitSuperExpression(SuperExpression node) {
+  void visitSuperExpression(SuperExpression node) {
     sink.write("super");
-    return null;
   }
 
   @override
-  Object visitSwitchCase(SwitchCase node) {
+  void visitSwitchCase(SwitchCase node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.labels, " ", " ");
     sink.write("case ");
     safelyVisitNode(node.expression);
     sink.write(": ");
     safelyVisitNodeListWithSeparator(node.statements, " ");
-    return null;
   }
 
   @override
-  Object visitSwitchDefault(SwitchDefault node) {
+  void visitSwitchDefault(SwitchDefault node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.labels, " ", " ");
     sink.write("default: ");
     safelyVisitNodeListWithSeparator(node.statements, " ");
-    return null;
   }
 
   @override
-  Object visitSwitchStatement(SwitchStatement node) {
+  void visitSwitchStatement(SwitchStatement node) {
     sink.write("switch (");
     safelyVisitNode(node.expression);
     sink.write(") {");
     safelyVisitNodeListWithSeparator(node.members, " ");
     sink.write("}");
-    return null;
   }
 
   @override
-  Object visitSymbolLiteral(SymbolLiteral node) {
+  void visitSymbolLiteral(SymbolLiteral node) {
     sink.write("#");
     List<Token> components = node.components;
     for (int i = 0; i < components.length; i++) {
@@ -9376,110 +9229,96 @@
       }
       sink.write(components[i].lexeme);
     }
-    return null;
   }
 
   @override
-  Object visitThisExpression(ThisExpression node) {
+  void visitThisExpression(ThisExpression node) {
     sink.write("this");
-    return null;
   }
 
   @override
-  Object visitThrowExpression(ThrowExpression node) {
+  void visitThrowExpression(ThrowExpression node) {
     sink.write("throw ");
     safelyVisitNode(node.expression);
-    return null;
   }
 
   @override
-  Object visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
+  void visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
     safelyVisitNodeWithSuffix(node.variables, ";");
-    return null;
   }
 
   @override
-  Object visitTryStatement(TryStatement node) {
+  void visitTryStatement(TryStatement node) {
     sink.write("try ");
     safelyVisitNode(node.body);
     safelyVisitNodeListWithSeparatorAndPrefix(" ", node.catchClauses, " ");
     safelyVisitNodeWithPrefix(" finally ", node.finallyBlock);
-    return null;
   }
 
   @override
-  Object visitTypeArgumentList(TypeArgumentList node) {
+  void visitTypeArgumentList(TypeArgumentList node) {
     sink.write('<');
     safelyVisitNodeListWithSeparator(node.arguments, ", ");
     sink.write('>');
-    return null;
   }
 
   @override
-  Object visitTypeName(TypeName node) {
+  void visitTypeName(TypeName node) {
     safelyVisitNode(node.name);
     safelyVisitNode(node.typeArguments);
-    return null;
   }
 
   @override
-  Object visitTypeParameter(TypeParameter node) {
+  void visitTypeParameter(TypeParameter node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     safelyVisitNode(node.name);
     safelyVisitNodeWithPrefix(" extends ", node.bound);
-    return null;
   }
 
   @override
-  Object visitTypeParameterList(TypeParameterList node) {
+  void visitTypeParameterList(TypeParameterList node) {
     sink.write('<');
     safelyVisitNodeListWithSeparator(node.typeParameters, ", ");
     sink.write('>');
-    return null;
   }
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     safelyVisitNode(node.name);
     safelyVisitNodeWithPrefix(" = ", node.initializer);
-    return null;
   }
 
   @override
-  Object visitVariableDeclarationList(VariableDeclarationList node) {
+  void visitVariableDeclarationList(VariableDeclarationList node) {
     safelyVisitNodeListWithSeparatorAndSuffix(node.metadata, " ", " ");
     safelyVisitTokenWithSuffix(node.keyword, " ");
     safelyVisitNodeWithSuffix(node.type, " ");
     safelyVisitNodeListWithSeparator(node.variables, ", ");
-    return null;
   }
 
   @override
-  Object visitVariableDeclarationStatement(VariableDeclarationStatement node) {
+  void visitVariableDeclarationStatement(VariableDeclarationStatement node) {
     safelyVisitNode(node.variables);
     sink.write(";");
-    return null;
   }
 
   @override
-  Object visitWhileStatement(WhileStatement node) {
+  void visitWhileStatement(WhileStatement node) {
     sink.write("while (");
     safelyVisitNode(node.condition);
     sink.write(") ");
     safelyVisitNode(node.body);
-    return null;
   }
 
   @override
-  Object visitWithClause(WithClause node) {
+  void visitWithClause(WithClause node) {
     sink.write("with ");
     safelyVisitNodeListWithSeparator(node.mixinTypes, ", ");
-    return null;
   }
 
   @override
-  Object visitYieldStatement(YieldStatement node) {
+  void visitYieldStatement(YieldStatement node) {
     if (node.star != null) {
       sink.write("yield* ");
     } else {
@@ -9487,7 +9326,6 @@
     }
     safelyVisitNode(node.expression);
     sink.write(";");
-    return null;
   }
 
   void _writeOperand(Expression node, Expression operand) {
diff --git a/pkg/analyzer/lib/src/dart/constant/constant_verifier.dart b/pkg/analyzer/lib/src/dart/constant/constant_verifier.dart
index d333f97..b271890 100644
--- a/pkg/analyzer/lib/src/dart/constant/constant_verifier.dart
+++ b/pkg/analyzer/lib/src/dart/constant/constant_verifier.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -23,7 +23,7 @@
 /// for additional errors and warnings not covered by the parser and resolver.
 /// In particular, it looks for errors and warnings related to constant
 /// expressions.
-class ConstantVerifier extends RecursiveAstVisitor<Object> {
+class ConstantVerifier extends RecursiveAstVisitor<void> {
   /// The error reporter by which errors will be reported.
   final ErrorReporter _errorReporter;
 
@@ -71,7 +71,7 @@
   }
 
   @override
-  Object visitAnnotation(Annotation node) {
+  void visitAnnotation(Annotation node) {
     super.visitAnnotation(node);
     // check annotation creation
     Element element = node.element;
@@ -80,14 +80,14 @@
       if (!element.isConst) {
         _errorReporter.reportErrorForNode(
             CompileTimeErrorCode.NON_CONSTANT_ANNOTATION_CONSTRUCTOR, node);
-        return null;
+        return;
       }
       // should have arguments
       ArgumentList argumentList = node.arguments;
       if (argumentList == null) {
         _errorReporter.reportErrorForNode(
             CompileTimeErrorCode.NO_ANNOTATION_CONSTRUCTOR_ARGUMENTS, node);
-        return null;
+        return;
       }
       // arguments should be constants
       _validateConstantArguments(argumentList);
@@ -99,28 +99,26 @@
       _errorReporter.reportErrorForNode(
           HintCode.INVALID_SEALED_ANNOTATION, node.parent, [node.element.name]);
     }
-    return null;
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     if (node.constKeyword != null) {
       _validateConstructorInitializers(node);
       _validateFieldInitializers(node.parent as ClassDeclaration, node);
     }
     _validateDefaultValues(node.parameters);
-    return super.visitConstructorDeclaration(node);
+    super.visitConstructorDeclaration(node);
   }
 
   @override
-  Object visitFunctionExpression(FunctionExpression node) {
+  void visitFunctionExpression(FunctionExpression node) {
     super.visitFunctionExpression(node);
     _validateDefaultValues(node.parameters);
-    return null;
   }
 
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     if (node.isConst) {
       TypeName typeName = node.constructorName.type;
       _checkForConstWithTypeParameters(typeName);
@@ -138,14 +136,13 @@
             constantVisitor,
             _errorReporter);
       }
-      return null;
     } else {
-      return super.visitInstanceCreationExpression(node);
+      super.visitInstanceCreationExpression(node);
     }
   }
 
   @override
-  Object visitListLiteral(ListLiteral node) {
+  void visitListLiteral(ListLiteral node) {
     super.visitListLiteral(node);
     if (node.isConst) {
       DartObjectImpl result;
@@ -160,11 +157,10 @@
         }
       }
     }
-    return null;
   }
 
   @override
-  Object visitMapLiteral(MapLiteral node) {
+  void visitMapLiteral(MapLiteral node) {
     super.visitMapLiteral(node);
     bool isConst = node.isConst;
     bool reportEqualKeys = true;
@@ -227,18 +223,41 @@
             StaticWarningCode.EQUAL_KEYS_IN_MAP, invalidKeys[i]);
       }
     }
-    return null;
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     super.visitMethodDeclaration(node);
     _validateDefaultValues(node.parameters);
-    return null;
   }
 
   @override
-  Object visitSwitchStatement(SwitchStatement node) {
+  void visitSetLiteral(SetLiteral node) {
+    super.visitSetLiteral(node);
+    if (node.isConst) {
+      DartObjectImpl result;
+      for (Expression element in node.elements) {
+        result =
+            _validate(element, CompileTimeErrorCode.NON_CONSTANT_SET_ELEMENT);
+        if (result != null) {
+          _reportErrorIfFromDeferredLibrary(
+              element,
+              CompileTimeErrorCode
+                  .NON_CONSTANT_SET_ELEMENT_FROM_DEFERRED_LIBRARY);
+          DartType type = result.type;
+          if (_implementsEqualsWhenNotAllowed(type)) {
+            _errorReporter.reportErrorForNode(
+                CompileTimeErrorCode.CONST_SET_ELEMENT_TYPE_IMPLEMENTS_EQUALS,
+                element,
+                [type.displayName]);
+          }
+        }
+      }
+    }
+  }
+
+  @override
+  void visitSwitchStatement(SwitchStatement node) {
     // TODO(paulberry): to minimize error messages, it would be nice to
     // compare all types with the most popular type rather than the first
     // type.
@@ -274,11 +293,11 @@
     if (!foundError) {
       _checkForCaseExpressionTypeImplementsEquals(node, firstType);
     }
-    return super.visitSwitchStatement(node);
+    super.visitSwitchStatement(node);
   }
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     super.visitVariableDeclaration(node);
     Expression initializer = node.initializer;
     if (initializer != null && (node.isConst || node.isFinal)) {
@@ -290,7 +309,7 @@
         // values computed if the value was needed (e.g. final variables in a
         // class containing const constructors).
         assert(!node.isConst);
-        return null;
+        return;
       }
       _reportErrors(result.errors,
           CompileTimeErrorCode.CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE);
@@ -299,7 +318,6 @@
           CompileTimeErrorCode
               .CONST_INITIALIZED_WITH_NON_CONSTANT_VALUE_FROM_DEFERRED_LIBRARY);
     }
-    return null;
   }
 
   /// This verifies that the passed switch statement does not have a case
@@ -409,12 +427,12 @@
           identical(dataErrorCode,
               CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_NUM_STRING) ||
           identical(dataErrorCode, CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL) ||
+          identical(
+              dataErrorCode, CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_INT) ||
           identical(dataErrorCode, CompileTimeErrorCode.CONST_EVAL_TYPE_INT) ||
           identical(dataErrorCode, CompileTimeErrorCode.CONST_EVAL_TYPE_NUM) ||
           identical(dataErrorCode,
               CompileTimeErrorCode.RECURSIVE_COMPILE_TIME_CONSTANT) ||
-          identical(dataErrorCode,
-              CheckedModeCompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION) ||
           identical(
               dataErrorCode,
               CheckedModeCompileTimeErrorCode
diff --git a/pkg/analyzer/lib/src/dart/constant/evaluation.dart b/pkg/analyzer/lib/src/dart/constant/evaluation.dart
index 3cab468..922caa0 100644
--- a/pkg/analyzer/lib/src/dart/constant/evaluation.dart
+++ b/pkg/analyzer/lib/src/dart/constant/evaluation.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -14,6 +14,7 @@
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/error/listener.dart';
+import 'package:analyzer/src/dart/analysis/experiments.dart';
 import 'package:analyzer/src/dart/constant/utilities.dart';
 import 'package:analyzer/src/dart/constant/value.dart';
 import 'package:analyzer/src/dart/element/element.dart';
@@ -36,6 +37,7 @@
    * Parameter to "fromEnvironment" methods that denotes the default value.
    */
   static String _DEFAULT_VALUE_PARAM = "defaultValue";
+
   /**
    * Source of RegExp matching declarable operator names.
    * From sdk/lib/internal/symbol.dart.
@@ -84,6 +86,11 @@
   final DeclaredVariables _declaredVariables;
 
   /**
+   * Return the object representing the state of active experiments.
+   */
+  final Experiments experiments;
+
+  /**
    * Validator used to verify correct dependency analysis when running unit
    * tests.
    */
@@ -103,12 +110,14 @@
    */
   ConstantEvaluationEngine(TypeProvider typeProvider, this._declaredVariables,
       {ConstantEvaluationValidator validator,
+      Experiments experiments,
       TypeSystem typeSystem,
       this.forAnalysisDriver: false})
       : typeProvider = typeProvider,
         validator =
             validator ?? new ConstantEvaluationValidator_ForProduction(),
-        typeSystem = typeSystem ?? new StrongTypeSystemImpl(typeProvider);
+        typeSystem = typeSystem ?? new StrongTypeSystemImpl(typeProvider),
+        experiments = experiments ?? new Experiments(new AnalysisOptionsImpl());
 
   /**
    * Check that the arguments to a call to fromEnvironment() are correct. The
@@ -246,7 +255,7 @@
           // ignore it here.
           constant.evaluationResult = new EvaluationResultImpl(null);
         }
-      } else if (element is ConstructorElementImpl &&
+      } else if (element is ConstructorElement &&
           element.isConst &&
           constNode.arguments != null) {
         RecordingErrorListener errorListener = new RecordingErrorListener();
@@ -445,6 +454,7 @@
           CompileTimeErrorCode.CONST_WITH_NON_CONST, node);
       return null;
     }
+
     if (!getConstructorImpl(constructor).isCycleFree) {
       // It's not safe to evaluate this constructor, so bail out.
       // TODO(paulberry): ensure that a reasonable error message is produced
@@ -453,34 +463,35 @@
       // itself")
       return new DartObjectImpl.validWithUnknownValue(constructor.returnType);
     }
+
     int argumentCount = arguments.length;
-    List<DartObjectImpl> argumentValues =
-        new List<DartObjectImpl>(argumentCount);
-    List<DartObjectImpl> positionalArguments = <DartObjectImpl>[];
-    List<Expression> argumentNodes = new List<Expression>(argumentCount);
-    Map<String, DartObjectImpl> namedArgumentValues =
-        new HashMap<String, DartObjectImpl>();
-    Map<String, NamedExpression> namedArgumentNodes =
-        new HashMap<String, NamedExpression>();
+    var argumentValues = new List<DartObjectImpl>(argumentCount);
+    Map<String, NamedExpression> namedNodes;
+    Map<String, DartObjectImpl> namedValues;
     for (int i = 0; i < argumentCount; i++) {
       Expression argument = arguments[i];
       if (argument is NamedExpression) {
+        namedNodes ??= new HashMap<String, NamedExpression>();
+        namedValues ??= new HashMap<String, DartObjectImpl>();
         String name = argument.name.label.name;
-        namedArgumentValues[name] =
-            constantVisitor._valueOf(argument.expression);
-        namedArgumentNodes[name] = argument;
-        argumentValues[i] = typeProvider.nullObject;
+        namedNodes[name] = argument;
+        namedValues[name] = constantVisitor._valueOf(argument.expression);
       } else {
         var argumentValue = constantVisitor._valueOf(argument);
         argumentValues[i] = argumentValue;
-        positionalArguments.add(argumentValue);
-        argumentNodes[i] = argument;
       }
     }
+    namedNodes ??= const {};
+    namedValues ??= const {};
+
     if (invocation == null) {
       invocation = new ConstructorInvocation(
-          constructor, positionalArguments, namedArgumentValues);
+        constructor,
+        argumentValues,
+        namedValues,
+      );
     }
+
     constructor = followConstantRedirectionChain(constructor);
     InterfaceType definingClass = constructor.returnType as InterfaceType;
     if (constructor.isFactory) {
@@ -489,7 +500,7 @@
       // that we can emulate.
       if (constructor.name == "fromEnvironment") {
         if (!checkFromEnvironmentArguments(
-            arguments, argumentValues, namedArgumentValues, definingClass)) {
+            arguments, argumentValues, namedValues, definingClass)) {
           errorReporter.reportErrorForNode(
               CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION, node);
           return null;
@@ -503,7 +514,7 @@
           return computeValueFromEnvironment(
               valueFromEnvironment,
               new DartObjectImpl(typeProvider.boolType, BoolState.FALSE_STATE),
-              namedArgumentValues);
+              namedValues);
         } else if (definingClass == typeProvider.intType) {
           DartObject valueFromEnvironment;
           valueFromEnvironment =
@@ -511,7 +522,7 @@
           return computeValueFromEnvironment(
               valueFromEnvironment,
               new DartObjectImpl(typeProvider.nullType, NullState.NULL_STATE),
-              namedArgumentValues);
+              namedValues);
         } else if (definingClass == typeProvider.stringType) {
           DartObject valueFromEnvironment;
           valueFromEnvironment =
@@ -519,13 +530,12 @@
           return computeValueFromEnvironment(
               valueFromEnvironment,
               new DartObjectImpl(typeProvider.nullType, NullState.NULL_STATE),
-              namedArgumentValues);
+              namedValues);
         }
       } else if (constructor.name == "" &&
           definingClass == typeProvider.symbolType &&
           argumentCount == 1) {
-        if (!checkSymbolArguments(
-            arguments, argumentValues, namedArgumentValues)) {
+        if (!checkSymbolArguments(arguments, argumentValues, namedValues)) {
           errorReporter.reportErrorForNode(
               CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION, node);
           return null;
@@ -562,28 +572,10 @@
     // into the current ErrorReporter, because they usually happen in a
     // different source. But they still should cause a constant evaluation
     // error for the current node.
-    var externalErrorListener = new RecordingErrorListener();
+    var externalErrorListener = new BooleanErrorListener();
     var externalErrorReporter =
         new ErrorReporter(externalErrorListener, constructor.source);
 
-    void reportLocalErrorForRecordedExternalErrors() {
-      ErrorCode errorCode;
-      for (AnalysisError error in externalErrorListener.errors) {
-        if (error.errorCode is CompileTimeErrorCode) {
-          errorCode = CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION;
-          break;
-        }
-        if (error.errorCode is CheckedModeCompileTimeErrorCode) {
-          errorCode =
-              CheckedModeCompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION;
-          break;
-        }
-      }
-      if (errorCode != null) {
-        errorReporter.reportErrorForNode(errorCode, node);
-      }
-    }
-
     // Start with final fields that are initialized at their declaration site.
     List<FieldElement> fields = constructor.enclosingElement.fields;
     for (int i = 0; i < fields.length; i++) {
@@ -629,11 +621,11 @@
       DartObjectImpl argumentValue = null;
       AstNode errorTarget = null;
       if (baseParameter.isNamed) {
-        argumentValue = namedArgumentValues[baseParameter.name];
-        errorTarget = namedArgumentNodes[baseParameter.name];
+        argumentValue = namedValues[baseParameter.name];
+        errorTarget = namedNodes[baseParameter.name];
       } else if (i < argumentCount) {
         argumentValue = argumentValues[i];
-        errorTarget = argumentNodes[i];
+        errorTarget = arguments[i];
       }
       if (errorTarget == null) {
         // No argument node that we can direct error messages to, because we
@@ -695,7 +687,8 @@
         lexicalEnvironment: parameterMap);
     String superName = null;
     NodeList<Expression> superArguments = null;
-    for (ConstructorInitializer initializer in initializers) {
+    for (var i = 0; i < initializers.length; i++) {
+      var initializer = initializers[i];
       if (initializer is ConstructorFieldInitializer) {
         Expression initializerExpression = initializer.expression;
         DartObjectImpl evaluationResult =
@@ -743,23 +736,24 @@
               initializerVisitor,
               externalErrorReporter,
               invocation: invocation);
-          reportLocalErrorForRecordedExternalErrors();
+          if (externalErrorListener.errorReported) {
+            errorReporter.reportErrorForNode(
+                CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION, node);
+          }
           return result;
         }
       } else if (initializer is AssertInitializer) {
         Expression condition = initializer.condition;
         if (condition == null) {
           errorReporter.reportErrorForNode(
-              CheckedModeCompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION,
-              node);
+              CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION, node);
         }
         DartObjectImpl evaluationResult = condition.accept(initializerVisitor);
         if (evaluationResult == null ||
             !evaluationResult.isBool ||
             evaluationResult.toBoolValue() != true) {
           errorReporter.reportErrorForNode(
-              CheckedModeCompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION,
-              node);
+              CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION, node);
           return null;
         }
       }
@@ -778,7 +772,10 @@
             superArguments, initializerVisitor, externalErrorReporter);
       }
     }
-    reportLocalErrorForRecordedExternalErrors();
+    if (externalErrorListener.errorReported) {
+      errorReporter.reportErrorForNode(
+          CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION, node);
+    }
     return new DartObjectImpl(
         definingClass, new GenericState(fieldMap, invocation: invocation));
   }
@@ -1075,10 +1072,9 @@
   }
 
   /**
-   * Convenience getter to gain access to the [evalationEngine]'s type
-   * provider.
+   * Return the object representing the state of active experiments.
    */
-  TypeProvider get _typeProvider => evaluationEngine.typeProvider;
+  Experiments get experiments => evaluationEngine.experiments;
 
   /**
    * Convenience getter to gain access to the [evaluationEngine]'s type system.
@@ -1086,6 +1082,12 @@
   TypeSystem get typeSystem => evaluationEngine.typeSystem;
 
   /**
+   * Convenience getter to gain access to the [evaluationEngine]'s type
+   * provider.
+   */
+  TypeProvider get _typeProvider => evaluationEngine.typeProvider;
+
+  /**
    * Given a [type] that may contain free type variables, evaluate them against
    * the current lexical environment and return the substituted type.
    */
@@ -1133,27 +1135,50 @@
   }
 
   @override
+  DartObjectImpl visitAsExpression(AsExpression node) {
+    if (experiments.constantUpdate2018) {
+      DartObjectImpl expressionResult = node.expression.accept(this);
+      DartObjectImpl typeResult = node.type.accept(this);
+      return _dartObjectComputer.castToType(node, expressionResult, typeResult);
+    }
+    // TODO(brianwilkerson) Figure out which error to report.
+    _error(node, null);
+    return null;
+  }
+
+  @override
   DartObjectImpl visitBinaryExpression(BinaryExpression node) {
     TokenType operatorType = node.operator.type;
     DartObjectImpl leftResult = node.leftOperand.accept(this);
     // evaluate lazy operators
     if (operatorType == TokenType.AMPERSAND_AMPERSAND) {
-      return _dartObjectComputer.logicalAnd(
+      return _dartObjectComputer.lazyAnd(
           node, leftResult, () => node.rightOperand.accept(this));
     } else if (operatorType == TokenType.BAR_BAR) {
-      return _dartObjectComputer.logicalOr(
+      return _dartObjectComputer.lazyOr(
           node, leftResult, () => node.rightOperand.accept(this));
+    } else if (operatorType == TokenType.QUESTION_QUESTION) {
+      if (experiments.constantUpdate2018) {
+        return _dartObjectComputer.lazyQuestionQuestion(
+            node, leftResult, () => node.rightOperand.accept(this));
+      } else {
+        return _dartObjectComputer.eagerQuestionQuestion(
+            node, leftResult, node.rightOperand.accept(this));
+      }
     }
     // evaluate eager operators
     DartObjectImpl rightResult = node.rightOperand.accept(this);
     if (operatorType == TokenType.AMPERSAND) {
-      return _dartObjectComputer.bitAnd(node, leftResult, rightResult);
+      return _dartObjectComputer.eagerAnd(
+          node, leftResult, rightResult, experiments.constantUpdate2018);
     } else if (operatorType == TokenType.BANG_EQ) {
       return _dartObjectComputer.notEqual(node, leftResult, rightResult);
     } else if (operatorType == TokenType.BAR) {
-      return _dartObjectComputer.bitOr(node, leftResult, rightResult);
+      return _dartObjectComputer.eagerOr(
+          node, leftResult, rightResult, experiments.constantUpdate2018);
     } else if (operatorType == TokenType.CARET) {
-      return _dartObjectComputer.bitXor(node, leftResult, rightResult);
+      return _dartObjectComputer.eagerXor(
+          node, leftResult, rightResult, experiments.constantUpdate2018);
     } else if (operatorType == TokenType.EQ_EQ) {
       return _dartObjectComputer.equalEqual(node, leftResult, rightResult);
     } else if (operatorType == TokenType.GT) {
@@ -1181,9 +1206,6 @@
       return _dartObjectComputer.divide(node, leftResult, rightResult);
     } else if (operatorType == TokenType.TILDE_SLASH) {
       return _dartObjectComputer.integerDivide(node, leftResult, rightResult);
-    } else if (operatorType == TokenType.QUESTION_QUESTION) {
-      return _dartObjectComputer.questionQuestion(
-          node, leftResult, rightResult);
     } else {
       // TODO(brianwilkerson) Figure out which error to report.
       _error(node, null);
@@ -1199,6 +1221,30 @@
   DartObjectImpl visitConditionalExpression(ConditionalExpression node) {
     Expression condition = node.condition;
     DartObjectImpl conditionResult = condition.accept(this);
+    if (experiments.constantUpdate2018) {
+      if (conditionResult == null) {
+        return conditionResult;
+      } else if (!conditionResult.isBool) {
+        _errorReporter.reportErrorForNode(
+            CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL, condition);
+        return null;
+      }
+      conditionResult = _dartObjectComputer.applyBooleanConversion(
+          condition, conditionResult);
+      if (conditionResult == null) {
+        return conditionResult;
+      }
+      if (conditionResult.toBoolValue() == true) {
+        return node.thenExpression.accept(this);
+      } else if (conditionResult.toBoolValue() == false) {
+        return node.elseExpression.accept(this);
+      }
+      // We used to return an object with a known type and an unknown value, but
+      // we can't do that without evaluating both the 'then' and 'else'
+      // expressions, and we're not suppose to do that under lazy semantics. I'm
+      // not sure which failure mode is worse.
+      return null;
+    }
     DartObjectImpl thenResult = node.thenExpression.accept(this);
     DartObjectImpl elseResult = node.elseExpression.accept(this);
     if (conditionResult == null) {
@@ -1270,6 +1316,18 @@
       new DartObjectImpl(_typeProvider.stringType, new StringState(node.value));
 
   @override
+  DartObjectImpl visitIsExpression(IsExpression node) {
+    if (experiments.constantUpdate2018) {
+      DartObjectImpl expressionResult = node.expression.accept(this);
+      DartObjectImpl typeResult = node.type.accept(this);
+      return _dartObjectComputer.typeTest(node, expressionResult, typeResult);
+    }
+    // TODO(brianwilkerson) Figure out which error to report.
+    _error(node, null);
+    return null;
+  }
+
+  @override
   DartObjectImpl visitListLiteral(ListLiteral node) {
     if (!node.isConst) {
       _errorReporter.reportErrorForNode(
@@ -1433,6 +1491,35 @@
   }
 
   @override
+  DartObjectImpl visitSetLiteral(SetLiteral node) {
+    if (!node.isConst) {
+      _errorReporter.reportErrorForNode(
+          CompileTimeErrorCode.MISSING_CONST_IN_SET_LITERAL, node);
+      return null;
+    }
+    bool errorOccurred = false;
+    Set<DartObjectImpl> elements = new Set<DartObjectImpl>();
+    for (Expression element in node.elements) {
+      DartObjectImpl elementResult = element.accept(this);
+      if (elementResult == null) {
+        errorOccurred = true;
+      } else {
+        elements.add(elementResult);
+      }
+    }
+    if (errorOccurred) {
+      return null;
+    }
+    DartType nodeType = node.staticType;
+    DartType elementType =
+        nodeType is InterfaceType && nodeType.typeArguments.isNotEmpty
+            ? nodeType.typeArguments[0]
+            : _typeProvider.dynamicType;
+    InterfaceType setType = _typeProvider.setType.instantiate([elementType]);
+    return new DartObjectImpl(setType, new SetState(elements));
+  }
+
+  @override
   DartObjectImpl visitSimpleIdentifier(SimpleIdentifier node) {
     if (_lexicalEnvironment != null &&
         _lexicalEnvironment.containsKey(node.name)) {
@@ -1521,8 +1608,9 @@
       // Driver, we compute values of all dependencies first (or detect  cycle).
       // So, the value has already been computed. Just return it.
       if (evaluationEngine.forAnalysisDriver) {
-        if (variableElement.isConst) {
-          return variableElement.evaluationResult.value;
+        EvaluationResultImpl value = variableElement.evaluationResult;
+        if (variableElement.isConst && value != null) {
+          return value.value;
         }
       } else {
         // TODO(scheglov) Once we remove task model, we can remove this code.
@@ -1626,18 +1714,6 @@
     return null;
   }
 
-  DartObjectImpl bitAnd(BinaryExpression node, DartObjectImpl leftOperand,
-      DartObjectImpl rightOperand) {
-    if (leftOperand != null && rightOperand != null) {
-      try {
-        return leftOperand.bitAnd(_typeProvider, rightOperand);
-      } on EvaluationException catch (exception) {
-        _errorReporter.reportErrorForNode(exception.errorCode, node);
-      }
-    }
-    return null;
-  }
-
   DartObjectImpl bitNot(Expression node, DartObjectImpl evaluationResult) {
     if (evaluationResult != null) {
       try {
@@ -1649,23 +1725,11 @@
     return null;
   }
 
-  DartObjectImpl bitOr(BinaryExpression node, DartObjectImpl leftOperand,
-      DartObjectImpl rightOperand) {
-    if (leftOperand != null && rightOperand != null) {
+  DartObjectImpl castToType(
+      AsExpression node, DartObjectImpl expression, DartObjectImpl type) {
+    if (expression != null && type != null) {
       try {
-        return leftOperand.bitOr(_typeProvider, rightOperand);
-      } on EvaluationException catch (exception) {
-        _errorReporter.reportErrorForNode(exception.errorCode, node);
-      }
-    }
-    return null;
-  }
-
-  DartObjectImpl bitXor(BinaryExpression node, DartObjectImpl leftOperand,
-      DartObjectImpl rightOperand) {
-    if (leftOperand != null && rightOperand != null) {
-      try {
-        return leftOperand.bitXor(_typeProvider, rightOperand);
+        return expression.castToType(_typeProvider, type);
       } on EvaluationException catch (exception) {
         _errorReporter.reportErrorForNode(exception.errorCode, node);
       }
@@ -1697,6 +1761,53 @@
     return null;
   }
 
+  DartObjectImpl eagerAnd(BinaryExpression node, DartObjectImpl leftOperand,
+      DartObjectImpl rightOperand, bool allowBool) {
+    if (leftOperand != null && rightOperand != null) {
+      try {
+        return leftOperand.eagerAnd(_typeProvider, rightOperand, allowBool);
+      } on EvaluationException catch (exception) {
+        _errorReporter.reportErrorForNode(exception.errorCode, node);
+      }
+    }
+    return null;
+  }
+
+  DartObjectImpl eagerOr(BinaryExpression node, DartObjectImpl leftOperand,
+      DartObjectImpl rightOperand, bool allowBool) {
+    if (leftOperand != null && rightOperand != null) {
+      try {
+        return leftOperand.eagerOr(_typeProvider, rightOperand, allowBool);
+      } on EvaluationException catch (exception) {
+        _errorReporter.reportErrorForNode(exception.errorCode, node);
+      }
+    }
+    return null;
+  }
+
+  DartObjectImpl eagerQuestionQuestion(Expression node,
+      DartObjectImpl leftOperand, DartObjectImpl rightOperand) {
+    if (leftOperand != null && rightOperand != null) {
+      if (leftOperand.isNull) {
+        return rightOperand;
+      }
+      return leftOperand;
+    }
+    return null;
+  }
+
+  DartObjectImpl eagerXor(BinaryExpression node, DartObjectImpl leftOperand,
+      DartObjectImpl rightOperand, bool allowBool) {
+    if (leftOperand != null && rightOperand != null) {
+      try {
+        return leftOperand.eagerXor(_typeProvider, rightOperand, allowBool);
+      } on EvaluationException catch (exception) {
+        _errorReporter.reportErrorForNode(exception.errorCode, node);
+      }
+    }
+    return null;
+  }
+
   DartObjectImpl equalEqual(Expression node, DartObjectImpl leftOperand,
       DartObjectImpl rightOperand) {
     if (leftOperand != null && rightOperand != null) {
@@ -1757,6 +1868,41 @@
     return null;
   }
 
+  DartObjectImpl lazyAnd(BinaryExpression node, DartObjectImpl leftOperand,
+      DartObjectImpl rightOperandComputer()) {
+    if (leftOperand != null) {
+      try {
+        return leftOperand.lazyAnd(_typeProvider, rightOperandComputer);
+      } on EvaluationException catch (exception) {
+        _errorReporter.reportErrorForNode(exception.errorCode, node);
+      }
+    }
+    return null;
+  }
+
+  DartObjectImpl lazyOr(BinaryExpression node, DartObjectImpl leftOperand,
+      DartObjectImpl rightOperandComputer()) {
+    if (leftOperand != null) {
+      try {
+        return leftOperand.lazyOr(_typeProvider, rightOperandComputer);
+      } on EvaluationException catch (exception) {
+        _errorReporter.reportErrorForNode(exception.errorCode, node);
+      }
+    }
+    return null;
+  }
+
+  DartObjectImpl lazyQuestionQuestion(Expression node,
+      DartObjectImpl leftOperand, DartObjectImpl rightOperandComputer()) {
+    if (leftOperand != null) {
+      if (leftOperand.isNull) {
+        return rightOperandComputer();
+      }
+      return leftOperand;
+    }
+    return null;
+  }
+
   DartObjectImpl lessThan(BinaryExpression node, DartObjectImpl leftOperand,
       DartObjectImpl rightOperand) {
     if (leftOperand != null && rightOperand != null) {
@@ -1781,18 +1927,6 @@
     return null;
   }
 
-  DartObjectImpl logicalAnd(BinaryExpression node, DartObjectImpl leftOperand,
-      DartObjectImpl rightOperandComputer()) {
-    if (leftOperand != null) {
-      try {
-        return leftOperand.logicalAnd(_typeProvider, rightOperandComputer);
-      } on EvaluationException catch (exception) {
-        _errorReporter.reportErrorForNode(exception.errorCode, node);
-      }
-    }
-    return null;
-  }
-
   DartObjectImpl logicalNot(Expression node, DartObjectImpl evaluationResult) {
     if (evaluationResult != null) {
       try {
@@ -1804,18 +1938,6 @@
     return null;
   }
 
-  DartObjectImpl logicalOr(BinaryExpression node, DartObjectImpl leftOperand,
-      DartObjectImpl rightOperandComputer()) {
-    if (leftOperand != null) {
-      try {
-        return leftOperand.logicalOr(_typeProvider, rightOperandComputer);
-      } on EvaluationException catch (exception) {
-        _errorReporter.reportErrorForNode(exception.errorCode, node);
-      }
-    }
-    return null;
-  }
-
   DartObjectImpl minus(BinaryExpression node, DartObjectImpl leftOperand,
       DartObjectImpl rightOperand) {
     if (leftOperand != null && rightOperand != null) {
@@ -1863,17 +1985,6 @@
     return null;
   }
 
-  DartObjectImpl questionQuestion(Expression node, DartObjectImpl leftOperand,
-      DartObjectImpl rightOperand) {
-    if (leftOperand != null && rightOperand != null) {
-      if (leftOperand.isNull) {
-        return rightOperand;
-      }
-      return leftOperand;
-    }
-    return null;
-  }
-
   DartObjectImpl remainder(BinaryExpression node, DartObjectImpl leftOperand,
       DartObjectImpl rightOperand) {
     if (leftOperand != null && rightOperand != null) {
@@ -1939,6 +2050,22 @@
     }
     return null;
   }
+
+  DartObjectImpl typeTest(
+      IsExpression node, DartObjectImpl expression, DartObjectImpl type) {
+    if (expression != null && type != null) {
+      try {
+        DartObjectImpl result = expression.hasType(_typeProvider, type);
+        if (node.notOperator != null) {
+          return result.logicalNot(_typeProvider);
+        }
+        return result;
+      } on EvaluationException catch (exception) {
+        _errorReporter.reportErrorForNode(exception.errorCode, node);
+      }
+    }
+    return null;
+  }
 }
 
 /**
diff --git a/pkg/analyzer/lib/src/dart/constant/utilities.dart b/pkg/analyzer/lib/src/dart/constant/utilities.dart
index 50480ad..b0aa23a 100644
--- a/pkg/analyzer/lib/src/dart/constant/utilities.dart
+++ b/pkg/analyzer/lib/src/dart/constant/utilities.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -106,6 +106,16 @@
   }
 
   @override
+  SetLiteral visitSetLiteral(SetLiteral node) {
+    SetLiteral literal = super.visitSetLiteral(node);
+    literal.staticType = node.staticType;
+    if (node.constKeyword == null && node.isConst) {
+      literal.constKeyword = new KeywordToken(Keyword.CONST, node.offset);
+    }
+    return literal;
+  }
+
+  @override
   SimpleIdentifier visitSimpleIdentifier(SimpleIdentifier node) {
     SimpleIdentifier identifier = super.visitSimpleIdentifier(node);
     identifier.staticElement = node.staticElement;
@@ -173,6 +183,15 @@
   }
 
   @override
+  void visitSetLiteral(SetLiteral node) {
+    if (node.isConst) {
+      _find(node);
+    } else {
+      super.visitSetLiteral(node);
+    }
+  }
+
+  @override
   void visitSwitchCase(SwitchCase node) {
     _find(node.expression);
     node.statements.accept(this);
@@ -192,7 +211,7 @@
  * constructors, constant constructor invocations, and annotations found in
  * those compilation units.
  */
-class ConstantFinder extends RecursiveAstVisitor<Object> {
+class ConstantFinder extends RecursiveAstVisitor<void> {
   /**
    * The elements and AST nodes whose constant values need to be computed.
    */
@@ -206,7 +225,7 @@
   bool treatFinalInstanceVarAsConst = false;
 
   @override
-  Object visitAnnotation(Annotation node) {
+  void visitAnnotation(Annotation node) {
     super.visitAnnotation(node);
     ElementAnnotation elementAnnotation = node.elementAnnotation;
     if (elementAnnotation == null) {
@@ -217,11 +236,10 @@
     } else {
       constantsToCompute.add(elementAnnotation);
     }
-    return null;
   }
 
   @override
-  Object visitClassDeclaration(ClassDeclaration node) {
+  void visitClassDeclaration(ClassDeclaration node) {
     bool prevTreatFinalInstanceVarAsConst = treatFinalInstanceVarAsConst;
     if (resolutionMap
         .elementDeclaredByClassDeclaration(node)
@@ -233,14 +251,14 @@
       treatFinalInstanceVarAsConst = true;
     }
     try {
-      return super.visitClassDeclaration(node);
+      super.visitClassDeclaration(node);
     } finally {
       treatFinalInstanceVarAsConst = prevTreatFinalInstanceVarAsConst;
     }
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     super.visitConstructorDeclaration(node);
     if (node.constKeyword != null) {
       ConstructorElement element = node.declaredElement;
@@ -249,22 +267,20 @@
         constantsToCompute.addAll(element.parameters);
       }
     }
-    return null;
   }
 
   @override
-  Object visitDefaultFormalParameter(DefaultFormalParameter node) {
+  void visitDefaultFormalParameter(DefaultFormalParameter node) {
     super.visitDefaultFormalParameter(node);
     Expression defaultValue = node.defaultValue;
     if (defaultValue != null && node.declaredElement != null) {
       constantsToCompute
           .add(resolutionMap.elementDeclaredByFormalParameter(node));
     }
-    return null;
   }
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     super.visitVariableDeclaration(node);
     Expression initializer = node.initializer;
     VariableElement element = node.declaredElement;
@@ -278,7 +294,6 @@
         constantsToCompute.add(element);
       }
     }
-    return null;
   }
 }
 
@@ -286,7 +301,7 @@
  * An object used to add reference information for a given variable to the
  * bi-directional mapping used to order the evaluation of constants.
  */
-class ReferenceFinder extends RecursiveAstVisitor<Object> {
+class ReferenceFinder extends RecursiveAstVisitor<void> {
   /**
    * The callback which should be used to report any dependencies that were
    * found.
@@ -301,39 +316,37 @@
   ReferenceFinder(this._callback);
 
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     if (node.isConst) {
       ConstructorElement constructor = getConstructorImpl(node.staticElement);
       if (constructor != null) {
         _callback(constructor);
       }
     }
-    return super.visitInstanceCreationExpression(node);
+    super.visitInstanceCreationExpression(node);
   }
 
   @override
-  Object visitLabel(Label node) {
+  void visitLabel(Label node) {
     // We are visiting the "label" part of a named expression in a function
     // call (presumably a constructor call), e.g. "const C(label: ...)".  We
     // don't want to visit the SimpleIdentifier for the label because that's a
     // reference to a function parameter that needs to be filled in; it's not a
     // constant whose value we depend on.
-    return null;
   }
 
   @override
-  Object visitRedirectingConstructorInvocation(
+  void visitRedirectingConstructorInvocation(
       RedirectingConstructorInvocation node) {
     super.visitRedirectingConstructorInvocation(node);
     ConstructorElement target = getConstructorImpl(node.staticElement);
     if (target != null) {
       _callback(target);
     }
-    return null;
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     Element staticElement = node.staticElement;
     Element element = staticElement is PropertyAccessorElement
         ? staticElement.variable
@@ -341,16 +354,14 @@
     if (element is VariableElement && element.isConst) {
       _callback(element);
     }
-    return null;
   }
 
   @override
-  Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
+  void visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     super.visitSuperConstructorInvocation(node);
     ConstructorElement constructor = getConstructorImpl(node.staticElement);
     if (constructor != null) {
       _callback(constructor);
     }
-    return null;
   }
 }
diff --git a/pkg/analyzer/lib/src/dart/constant/value.dart b/pkg/analyzer/lib/src/dart/constant/value.dart
index cca4d22..e15ba2e 100644
--- a/pkg/analyzer/lib/src/dart/constant/value.dart
+++ b/pkg/analyzer/lib/src/dart/constant/value.dart
@@ -98,7 +98,7 @@
   }
 
   @override
-  BoolState logicalAnd(InstanceState rightOperandComputer()) {
+  BoolState lazyAnd(InstanceState rightOperandComputer()) {
     if (value == false) {
       return FALSE_STATE;
     }
@@ -108,6 +108,16 @@
   }
 
   @override
+  BoolState lazyOr(InstanceState rightOperandComputer()) {
+    if (value == true) {
+      return TRUE_STATE;
+    }
+    InstanceState rightOperand = rightOperandComputer();
+    assertBool(rightOperand);
+    return value == null ? UNKNOWN_VALUE : rightOperand.convertToBool();
+  }
+
+  @override
   BoolState logicalNot() {
     if (value == null) {
       return UNKNOWN_VALUE;
@@ -116,16 +126,6 @@
   }
 
   @override
-  BoolState logicalOr(InstanceState rightOperandComputer()) {
-    if (value == true) {
-      return TRUE_STATE;
-    }
-    InstanceState rightOperand = rightOperandComputer();
-    assertBool(rightOperand);
-    return value == null ? UNKNOWN_VALUE : rightOperand.convertToBool();
-  }
-
-  @override
   String toString() => value == null ? "-unknown-" : (value ? "true" : "false");
 
   /**
@@ -145,9 +145,10 @@
   final ConstructorElement constructor;
 
   /**
-   * The positional arguments passed to the constructor.
+   * Values of specified arguments, actual values for positional, and `null`
+   * for named (which are provided as [namedArguments]).
    */
-  final List<DartObjectImpl> positionalArguments;
+  final List<DartObjectImpl> _argumentValues;
 
   /**
    * The named arguments passed to the constructor.
@@ -155,7 +156,14 @@
   final Map<String, DartObjectImpl> namedArguments;
 
   ConstructorInvocation(
-      this.constructor, this.positionalArguments, this.namedArguments);
+      this.constructor, this._argumentValues, this.namedArguments);
+
+  /**
+   * The positional arguments passed to the constructor.
+   */
+  List<DartObjectImpl> get positionalArguments {
+    return _argumentValues.takeWhile((v) => v != null).toList();
+  }
 }
 
 /**
@@ -219,6 +227,11 @@
    */
   bool get isBoolNumStringOrNull => _state.isBoolNumStringOrNull;
 
+  /**
+   * Return `true` if this object represents an object whose type is 'int'.
+   */
+  bool get isInt => _state.isInt;
+
   @override
   bool get isNull => _state is NullState;
 
@@ -265,19 +278,6 @@
   }
 
   /**
-   * Return the result of invoking the '&' operator on this object with the
-   * [rightOperand]. The [typeProvider] is the type provider used to find known
-   * types.
-   *
-   * Throws an [EvaluationException] if the operator is not appropriate for an
-   * object of this kind.
-   */
-  DartObjectImpl bitAnd(
-          TypeProvider typeProvider, DartObjectImpl rightOperand) =>
-      new DartObjectImpl(
-          typeProvider.intType, _state.bitAnd(rightOperand._state));
-
-  /**
    * Return the result of invoking the '~' operator on this object. The
    * [typeProvider] is the type provider used to find known types.
    *
@@ -288,30 +288,20 @@
       new DartObjectImpl(typeProvider.intType, _state.bitNot());
 
   /**
-   * Return the result of invoking the '|' operator on this object with the
-   * [rightOperand]. The [typeProvider] is the type provider used to find known
-   * types.
-   *
-   * Throws an [EvaluationException] if the operator is not appropriate for an
-   * object of this kind.
+   * Return the result of casting this object to the given [castType].
    */
-  DartObjectImpl bitOr(
-          TypeProvider typeProvider, DartObjectImpl rightOperand) =>
-      new DartObjectImpl(
-          typeProvider.intType, _state.bitOr(rightOperand._state));
-
-  /**
-   * Return the result of invoking the '^' operator on this object with the
-   * [rightOperand]. The [typeProvider] is the type provider used to find known
-   * types.
-   *
-   * Throws an [EvaluationException] if the operator is not appropriate for an
-   * object of this kind.
-   */
-  DartObjectImpl bitXor(
-          TypeProvider typeProvider, DartObjectImpl rightOperand) =>
-      new DartObjectImpl(
-          typeProvider.intType, _state.bitXor(rightOperand._state));
+  DartObjectImpl castToType(
+      TypeProvider typeProvider, DartObjectImpl castType) {
+    _assertType(castType);
+    if (isNull) {
+      return this;
+    }
+    if (!type.isSubtypeOf((castType._state as TypeState)._type)) {
+      throw new EvaluationException(
+          CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION);
+    }
+    return this;
+  }
 
   /**
    * Return the result of invoking the ' ' operator on this object with the
@@ -364,6 +354,69 @@
   }
 
   /**
+   * Return the result of invoking the '&' operator on this object with the
+   * [rightOperand]. The [typeProvider] is the type provider used to find known
+   * types.
+   *
+   * Throws an [EvaluationException] if the operator is not appropriate for an
+   * object of this kind.
+   */
+  DartObjectImpl eagerAnd(
+      TypeProvider typeProvider, DartObjectImpl rightOperand, bool allowBool) {
+    if (allowBool && isBool && rightOperand.isBool) {
+      return new DartObjectImpl(
+          typeProvider.boolType, _state.logicalAnd(rightOperand._state));
+    } else if (isInt && rightOperand.isInt) {
+      return new DartObjectImpl(
+          typeProvider.intType, _state.bitAnd(rightOperand._state));
+    }
+    throw new EvaluationException(
+        CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_INT);
+  }
+
+  /**
+   * Return the result of invoking the '|' operator on this object with the
+   * [rightOperand]. The [typeProvider] is the type provider used to find known
+   * types.
+   *
+   * Throws an [EvaluationException] if the operator is not appropriate for an
+   * object of this kind.
+   */
+  DartObjectImpl eagerOr(
+      TypeProvider typeProvider, DartObjectImpl rightOperand, bool allowBool) {
+    if (allowBool && isBool && rightOperand.isBool) {
+      return new DartObjectImpl(
+          typeProvider.boolType, _state.logicalOr(rightOperand._state));
+    } else if (isInt && rightOperand.isInt) {
+      return new DartObjectImpl(
+          typeProvider.intType, _state.bitOr(rightOperand._state));
+    }
+    throw new EvaluationException(
+        CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_INT);
+  }
+
+  /**
+   * Return the result of invoking the '^' operator on this object with the
+   * [rightOperand]. The [typeProvider] is the type provider used to find known
+   * types.
+   *
+   * Throws an [EvaluationException] if the operator is not appropriate for an
+   * object of this kind.
+   */
+  DartObjectImpl eagerXor(
+      TypeProvider typeProvider, DartObjectImpl rightOperand, bool allowBool) {
+    if (allowBool && isBool && rightOperand.isBool) {
+      return new DartObjectImpl(
+          typeProvider.boolType, _state.logicalXor(rightOperand._state));
+    } else if (isInt && rightOperand.isInt) {
+      return new DartObjectImpl(
+          typeProvider.intType, _state.bitXor(rightOperand._state));
+    }
+    throw new EvaluationException(
+        CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_INT);
+  }
+
+  /**
    * Return the result of invoking the '==' operator on this object with the
    * [rightOperand]. The [typeProvider] is the type provider used to find known
    * types.
@@ -434,6 +487,27 @@
           _state.greaterThanOrEqual(rightOperand._state));
 
   /**
+   * Return the result of testing whether this object has the given [testedType].
+   */
+  DartObjectImpl hasType(TypeProvider typeProvider, DartObjectImpl testedType) {
+    _assertType(testedType);
+    DartType typeType = (testedType._state as TypeState)._type;
+    BoolState state;
+    if (isNull) {
+      if (typeType == typeProvider.objectType ||
+          typeType == typeProvider.dynamicType ||
+          typeType == typeProvider.nullType) {
+        state = BoolState.TRUE_STATE;
+      } else {
+        state = BoolState.FALSE_STATE;
+      }
+    } else {
+      state = BoolState.from(type.isSubtypeOf(typeType));
+    }
+    return new DartObjectImpl(typeProvider.boolType, state);
+  }
+
+  /**
    * Return the result of invoking the '~/' operator on this object with the
    * [rightOperand]. The [typeProvider] is the type provider used to find known
    * types.
@@ -458,6 +532,32 @@
   }
 
   /**
+   * Return the result of invoking the '&&' operator on this object with the
+   * [rightOperand]. The [typeProvider] is the type provider used to find known
+   * types.
+   *
+   * Throws an [EvaluationException] if the operator is not appropriate for an
+   * object of this kind.
+   */
+  DartObjectImpl lazyAnd(
+          TypeProvider typeProvider, DartObjectImpl rightOperandComputer()) =>
+      new DartObjectImpl(typeProvider.boolType,
+          _state.lazyAnd(() => rightOperandComputer()?._state));
+
+  /**
+   * Return the result of invoking the '||' operator on this object with the
+   * [rightOperand]. The [typeProvider] is the type provider used to find known
+   * types.
+   *
+   * Throws an [EvaluationException] if the operator is not appropriate for an
+   * object of this kind.
+   */
+  DartObjectImpl lazyOr(
+          TypeProvider typeProvider, DartObjectImpl rightOperandComputer()) =>
+      new DartObjectImpl(typeProvider.boolType,
+          _state.lazyOr(() => rightOperandComputer()?._state));
+
+  /**
    * Return the result of invoking the '&lt;' operator on this object with the
    * [rightOperand]. The [typeProvider] is the type provider used to find known
    * types.
@@ -484,19 +584,6 @@
           typeProvider.boolType, _state.lessThanOrEqual(rightOperand._state));
 
   /**
-   * Return the result of invoking the '&&' operator on this object with the
-   * [rightOperand]. The [typeProvider] is the type provider used to find known
-   * types.
-   *
-   * Throws an [EvaluationException] if the operator is not appropriate for an
-   * object of this kind.
-   */
-  DartObjectImpl logicalAnd(
-          TypeProvider typeProvider, DartObjectImpl rightOperandComputer()) =>
-      new DartObjectImpl(typeProvider.boolType,
-          _state.logicalAnd(() => rightOperandComputer()?._state));
-
-  /**
    * Return the result of invoking the '!' operator on this object. The
    * [typeProvider] is the type provider used to find known types.
    *
@@ -507,19 +594,6 @@
       new DartObjectImpl(typeProvider.boolType, _state.logicalNot());
 
   /**
-   * Return the result of invoking the '||' operator on this object with the
-   * [rightOperand]. The [typeProvider] is the type provider used to find known
-   * types.
-   *
-   * Throws an [EvaluationException] if the operator is not appropriate for an
-   * object of this kind.
-   */
-  DartObjectImpl logicalOr(
-          TypeProvider typeProvider, DartObjectImpl rightOperandComputer()) =>
-      new DartObjectImpl(typeProvider.boolType,
-          _state.logicalOr(() => rightOperandComputer()?._state));
-
-  /**
    * Return the result of invoking the '-' operator on this object with the
    * [rightOperand]. The [typeProvider] is the type provider used to find known
    * types.
@@ -722,6 +796,15 @@
   }
 
   @override
+  Set<DartObject> toSetValue() {
+    InstanceState state = _state;
+    if (state is SetState) {
+      return state._elements;
+    }
+    return null;
+  }
+
+  @override
   String toString() => "${type.displayName} ($_state)";
 
   @override
@@ -750,6 +833,16 @@
     }
     return null;
   }
+
+  /**
+   * Throw an exception if the given [object]'s state does not represent a Type
+   * value.
+   */
+  void _assertType(DartObjectImpl object) {
+    if (object._state is! TypeState) {
+      throw new EvaluationException(CompileTimeErrorCode.CONST_EVAL_TYPE_TYPE);
+    }
+  }
 }
 
 /**
@@ -1183,6 +1276,19 @@
   }
 
   @override
+  BoolState lazyAnd(InstanceState rightOperandComputer()) {
+    assertBool(rightOperandComputer());
+    return BoolState.UNKNOWN_VALUE;
+  }
+
+  @override
+  BoolState lazyOr(InstanceState rightOperandComputer()) {
+    InstanceState rightOperand = rightOperandComputer();
+    assertBool(rightOperand);
+    return rightOperand.convertToBool();
+  }
+
+  @override
   BoolState lessThan(InstanceState rightOperand) {
     assertNumOrNull(rightOperand);
     return BoolState.UNKNOWN_VALUE;
@@ -1195,22 +1301,9 @@
   }
 
   @override
-  BoolState logicalAnd(InstanceState rightOperandComputer()) {
-    assertBool(rightOperandComputer());
-    return BoolState.UNKNOWN_VALUE;
-  }
-
-  @override
   BoolState logicalNot() => BoolState.UNKNOWN_VALUE;
 
   @override
-  BoolState logicalOr(InstanceState rightOperandComputer()) {
-    InstanceState rightOperand = rightOperandComputer();
-    assertBool(rightOperand);
-    return rightOperand.convertToBool();
-  }
-
-  @override
   NumState minus(InstanceState rightOperand) {
     assertNumOrNull(rightOperand);
     return _unknownNum(rightOperand);
@@ -1461,6 +1554,16 @@
   bool get isBoolNumStringOrNull => false;
 
   /**
+   * Return `true` if this object represents an object whose type is 'int'.
+   */
+  bool get isInt => false;
+
+  /**
+   * Return `true` if this object represents the value 'null'.
+   */
+  bool get isNull => false;
+
+  /**
    * Return `true` if this object represents an unknown value.
    */
   bool get isUnknown => false;
@@ -1704,6 +1807,40 @@
   BoolState isIdentical(InstanceState rightOperand);
 
   /**
+   * Return the result of invoking the '&&' operator on this object with the
+   * [rightOperand].
+   *
+   * Throws an [EvaluationException] if the operator is not appropriate for an
+   * object of this kind.
+   */
+  BoolState lazyAnd(InstanceState rightOperandComputer()) {
+    assertBool(this);
+    if (convertToBool() == BoolState.FALSE_STATE) {
+      return this;
+    }
+    InstanceState rightOperand = rightOperandComputer();
+    assertBool(rightOperand);
+    return rightOperand.convertToBool();
+  }
+
+  /**
+   * Return the result of invoking the '||' operator on this object with the
+   * [rightOperand].
+   *
+   * Throws an [EvaluationException] if the operator is not appropriate for an
+   * object of this kind.
+   */
+  BoolState lazyOr(InstanceState rightOperandComputer()) {
+    assertBool(this);
+    if (convertToBool() == BoolState.TRUE_STATE) {
+      return this;
+    }
+    InstanceState rightOperand = rightOperandComputer();
+    assertBool(rightOperand);
+    return rightOperand.convertToBool();
+  }
+
+  /**
    * Return the result of invoking the '&lt;' operator on this object with the
    * [rightOperand].
    *
@@ -1732,20 +1869,17 @@
   }
 
   /**
-   * Return the result of invoking the '&&' operator on this object with the
+   * Return the result of invoking the '&' operator on this object with the
    * [rightOperand].
    *
    * Throws an [EvaluationException] if the operator is not appropriate for an
    * object of this kind.
    */
-  BoolState logicalAnd(InstanceState rightOperandComputer()) {
+  BoolState logicalAnd(InstanceState rightOperand) {
     assertBool(this);
-    if (convertToBool() == BoolState.FALSE_STATE) {
-      return this;
-    }
-    InstanceState rightOperand = rightOperandComputer();
     assertBool(rightOperand);
-    return rightOperand.convertToBool();
+    return BoolState.from(
+        convertToBool().value & rightOperand.convertToBool().value);
   }
 
   /**
@@ -1760,20 +1894,31 @@
   }
 
   /**
-   * Return the result of invoking the '||' operator on this object with the
+   * Return the result of invoking the '|' operator on this object with the
    * [rightOperand].
    *
    * Throws an [EvaluationException] if the operator is not appropriate for an
    * object of this kind.
    */
-  BoolState logicalOr(InstanceState rightOperandComputer()) {
+  BoolState logicalOr(InstanceState rightOperand) {
     assertBool(this);
-    if (convertToBool() == BoolState.TRUE_STATE) {
-      return this;
-    }
-    InstanceState rightOperand = rightOperandComputer();
     assertBool(rightOperand);
-    return rightOperand.convertToBool();
+    return BoolState.from(
+        convertToBool().value | rightOperand.convertToBool().value);
+  }
+
+  /**
+   * Return the result of invoking the '^' operator on this object with the
+   * [rightOperand].
+   *
+   * Throws an [EvaluationException] if the operator is not appropriate for an
+   * object of this kind.
+   */
+  BoolState logicalXor(InstanceState rightOperand) {
+    assertBool(this);
+    assertBool(rightOperand);
+    return BoolState.from(
+        convertToBool().value ^ rightOperand.convertToBool().value);
   }
 
   /**
@@ -1898,6 +2043,9 @@
   bool get isBoolNumStringOrNull => true;
 
   @override
+  bool get isInt => true;
+
+  @override
   bool get isUnknown => value == null;
 
   @override
@@ -2521,6 +2669,9 @@
   bool get isBoolNumStringOrNull => true;
 
   @override
+  bool get isNull => true;
+
+  @override
   String get typeName => "Null";
 
   @override
@@ -2676,6 +2827,89 @@
 }
 
 /**
+ * The state of an object representing a set.
+ */
+class SetState extends InstanceState {
+  /**
+   * The elements of the set.
+   */
+  final Set<DartObjectImpl> _elements;
+
+  /**
+   * Initialize a newly created state to represent a set with the given
+   * [elements].
+   */
+  SetState(this._elements);
+
+  @override
+  int get hashCode {
+    int value = 0;
+    for (DartObjectImpl element in _elements) {
+      value = (value << 3) ^ element.hashCode;
+    }
+    return value;
+  }
+
+  @override
+  String get typeName => "Set";
+
+  @override
+  bool operator ==(Object object) {
+    if (object is SetState) {
+      List<DartObjectImpl> elements = _elements.toList();
+      List<DartObjectImpl> otherElements = object._elements.toList();
+      int count = elements.length;
+      if (otherElements.length != count) {
+        return false;
+      } else if (count == 0) {
+        return true;
+      }
+      for (int i = 0; i < count; i++) {
+        if (elements[i] != otherElements[i]) {
+          return false;
+        }
+      }
+      return true;
+    }
+    return false;
+  }
+
+  @override
+  StringState convertToString() => StringState.UNKNOWN_VALUE;
+
+  @override
+  BoolState equalEqual(InstanceState rightOperand) {
+    assertBoolNumStringOrNull(rightOperand);
+    return isIdentical(rightOperand);
+  }
+
+  @override
+  BoolState isIdentical(InstanceState rightOperand) {
+    if (rightOperand is DynamicState) {
+      return BoolState.UNKNOWN_VALUE;
+    }
+    return BoolState.from(this == rightOperand);
+  }
+
+  @override
+  String toString() {
+    StringBuffer buffer = new StringBuffer();
+    buffer.write('{');
+    bool first = true;
+    _elements.forEach((DartObjectImpl element) {
+      if (first) {
+        first = false;
+      } else {
+        buffer.write(', ');
+      }
+      buffer.write(element);
+    });
+    buffer.write('}');
+    return buffer.toString();
+  }
+}
+
+/**
  * The state of an object representing a string.
  */
 class StringState extends InstanceState {
diff --git a/pkg/analyzer/lib/src/dart/element/ast_provider.dart b/pkg/analyzer/lib/src/dart/element/ast_provider.dart
deleted file mode 100644
index ba94d53..0000000
--- a/pkg/analyzer/lib/src/dart/element/ast_provider.dart
+++ /dev/null
@@ -1,46 +0,0 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:async';
-
-import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
-
-/**
- * Provider for resolved and unresolved [CompilationUnit]s that contain, or
- * [AstNode]s that declare [Element]s.
- */
-abstract class AstProvider {
-  /**
-   * Return the driver that is used to provide ASTs.
-   */
-  AnalysisDriver get driver;
-
-  /**
-   * Completes with the [SimpleIdentifier] that declares the [element]. The
-   * enclosing unit is only parsed, but not resolved. Completes with `null` if
-   * the [element] is synthetic, or the file where it is declared cannot be
-   * parsed, etc.
-   */
-  Future<SimpleIdentifier> getParsedNameForElement(Element element);
-
-  /**
-   * Completes with the parsed [CompilationUnit] that contains the [element].
-   */
-  Future<CompilationUnit> getParsedUnitForElement(Element element);
-
-  /**
-   * Completes with the [SimpleIdentifier] that declares the [element]. The
-   * enclosing unit is fully resolved. Completes with `null` if the [element]
-   * is synthetic, or the file where it is declared cannot be parsed and
-   * resolved, etc.
-   */
-  Future<SimpleIdentifier> getResolvedNameForElement(Element element);
-
-  /**
-   * Completes with the resolved [CompilationUnit] that contains the [element].
-   */
-  Future<CompilationUnit> getResolvedUnitForElement(Element element);
-}
diff --git a/pkg/analyzer/lib/src/dart/element/builder.dart b/pkg/analyzer/lib/src/dart/element/builder.dart
index 2e518e3..cefb1d8 100644
--- a/pkg/analyzer/lib/src/dart/element/builder.dart
+++ b/pkg/analyzer/lib/src/dart/element/builder.dart
@@ -48,7 +48,7 @@
       : super(initialHolder, compilationUnitElement);
 
   @override
-  Object visitAnnotation(Annotation node) {
+  void visitAnnotation(Annotation node) {
     // Although it isn't valid to do so because closures are not constant
     // expressions, it's possible for one of the arguments to the constructor to
     // contain a closure. Wrapping the processing of the annotation this way
@@ -62,16 +62,13 @@
     } finally {
       _currentHolder = previousHolder;
     }
-    return null;
   }
 
   @override
-  Object visitBlockFunctionBody(BlockFunctionBody node) {
-    return null;
-  }
+  void visitBlockFunctionBody(BlockFunctionBody node) {}
 
   @override
-  Object visitClassDeclaration(ClassDeclaration node) {
+  void visitClassDeclaration(ClassDeclaration node) {
     _enclosingClassHasConstConstructor = false;
     for (var constructor in node.members) {
       if (constructor is ConstructorDeclaration &&
@@ -90,12 +87,10 @@
     _fillClassElement(node, element, holder);
 
     _currentHolder.addType(element);
-
-    return null;
   }
 
   @override
-  Object visitClassTypeAlias(ClassTypeAlias node) {
+  void visitClassTypeAlias(ClassTypeAlias node) {
     ElementHolder holder = new ElementHolder();
     _visitChildren(holder, node);
     SimpleIdentifier className = node.name;
@@ -109,19 +104,18 @@
     _currentHolder.addType(element);
     className.staticElement = element;
     holder.validate();
-    return null;
   }
 
   @override
-  Object visitCompilationUnit(CompilationUnit node) {
+  void visitCompilationUnit(CompilationUnit node) {
     if (_unitElement is ElementImpl) {
       _setCodeRange(_unitElement, node);
     }
-    return super.visitCompilationUnit(node);
+    super.visitCompilationUnit(node);
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     ElementHolder holder = new ElementHolder();
     _visitChildren(holder, node);
     FunctionBody body = node.body;
@@ -163,11 +157,10 @@
       element.nameEnd = constructorName.end;
     }
     holder.validate();
-    return null;
   }
 
   @override
-  Object visitEnumDeclaration(EnumDeclaration node) {
+  void visitEnumDeclaration(EnumDeclaration node) {
     SimpleIdentifier enumName = node.name;
     EnumElementImpl enumElement = new EnumElementImpl.forNode(enumName);
     _setCodeRange(enumElement, node);
@@ -199,24 +192,22 @@
 
     _currentHolder.addEnum(enumElement);
     enumName.staticElement = enumElement;
-    return super.visitEnumDeclaration(node);
+    super.visitEnumDeclaration(node);
   }
 
   @override
-  Object visitExportDirective(ExportDirective node) {
+  void visitExportDirective(ExportDirective node) {
     List<ElementAnnotation> annotations =
         _createElementAnnotations(node.metadata);
     _unitElement.setAnnotations(node.offset, annotations);
-    return super.visitExportDirective(node);
+    super.visitExportDirective(node);
   }
 
   @override
-  Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
-    return null;
-  }
+  void visitExpressionFunctionBody(ExpressionFunctionBody node) {}
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     FunctionExpression expression = node.functionExpression;
     if (expression != null) {
       ElementHolder holder = new ElementHolder();
@@ -254,7 +245,7 @@
         SimpleIdentifier propertyNameNode = node.name;
         if (propertyNameNode == null) {
           // TODO(brianwilkerson) Report this internal error.
-          return null;
+          return;
         }
         String propertyName = propertyNameNode.name;
         TopLevelVariableElementImpl variable = _currentHolder
@@ -327,15 +318,15 @@
       }
       holder.validate();
     }
-    return null;
   }
 
   @override
-  Object visitFunctionExpression(FunctionExpression node) {
+  void visitFunctionExpression(FunctionExpression node) {
     if (node.parent is FunctionDeclaration) {
       // visitFunctionDeclaration has already created the element for the
       // declaration.  We just need to visit children.
-      return super.visitFunctionExpression(node);
+      super.visitFunctionExpression(node);
+      return;
     }
     ElementHolder holder = new ElementHolder();
     _visitChildren(holder, node);
@@ -359,11 +350,10 @@
     _currentHolder.addFunction(element);
     node.element = element;
     holder.validate();
-    return null;
   }
 
   @override
-  Object visitFunctionTypeAlias(FunctionTypeAlias node) {
+  void visitFunctionTypeAlias(FunctionTypeAlias node) {
     ElementHolder holder = new ElementHolder();
     _visitChildren(holder, node);
     SimpleIdentifier aliasName = node.name;
@@ -382,11 +372,10 @@
     _currentHolder.addTypeAlias(element);
     aliasName.staticElement = element;
     holder.validate();
-    return null;
   }
 
   @override
-  Object visitGenericTypeAlias(GenericTypeAlias node) {
+  void visitGenericTypeAlias(GenericTypeAlias node) {
     ElementHolder holder = new ElementHolder();
     _visitChildren(holder, node);
     SimpleIdentifier aliasName = node.name;
@@ -403,27 +392,26 @@
     _currentHolder.addTypeAlias(element);
     aliasName.staticElement = element;
     holder.validate();
-    return null;
   }
 
   @override
-  Object visitImportDirective(ImportDirective node) {
+  void visitImportDirective(ImportDirective node) {
     List<ElementAnnotation> annotations =
         _createElementAnnotations(node.metadata);
     _unitElement.setAnnotations(node.offset, annotations);
-    return super.visitImportDirective(node);
+    super.visitImportDirective(node);
   }
 
   @override
-  Object visitLibraryDirective(LibraryDirective node) {
+  void visitLibraryDirective(LibraryDirective node) {
     List<ElementAnnotation> annotations =
         _createElementAnnotations(node.metadata);
     _unitElement.setAnnotations(node.offset, annotations);
-    return super.visitLibraryDirective(node);
+    super.visitLibraryDirective(node);
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     try {
       ElementHolder holder = new ElementHolder();
       _visitChildren(holder, node);
@@ -539,7 +527,7 @@
     } catch (exception, stackTrace) {
       if (node.name.staticElement == null) {
         ClassDeclaration classNode =
-            node.getAncestor((node) => node is ClassDeclaration);
+            node.thisOrAncestorOfType<ClassDeclaration>();
         StringBuffer buffer = new StringBuffer();
         buffer.write("The element for the method ");
         buffer.write(node.name);
@@ -557,7 +545,7 @@
     } finally {
       if (node.name.staticElement == null) {
         ClassDeclaration classNode =
-            node.getAncestor((node) => node is ClassDeclaration);
+            node.thisOrAncestorOfType<ClassDeclaration>();
         StringBuffer buffer = new StringBuffer();
         buffer.write("The element for the method ");
         buffer.write(node.name);
@@ -570,11 +558,10 @@
                 new AnalysisException(buffer.toString()), null));
       }
     }
-    return null;
   }
 
   @override
-  Object visitMixinDeclaration(MixinDeclaration node) {
+  void visitMixinDeclaration(MixinDeclaration node) {
     ElementHolder holder = _buildClassMembers(node);
 
     SimpleIdentifier nameNode = node.name;
@@ -583,20 +570,18 @@
     _fillClassElement(node, element, holder);
 
     _currentHolder.addMixin(element);
-
-    return null;
   }
 
   @override
-  Object visitPartDirective(PartDirective node) {
+  void visitPartDirective(PartDirective node) {
     List<ElementAnnotation> annotations =
         _createElementAnnotations(node.metadata);
     _unitElement.setAnnotations(node.offset, annotations);
-    return super.visitPartDirective(node);
+    super.visitPartDirective(node);
   }
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     bool isConst = node.isConst;
     bool isFinal = node.isFinal;
     Expression initializerNode = node.initializer;
@@ -658,11 +643,10 @@
         _currentHolder.addAccessor(setter);
       }
     }
-    return null;
   }
 
   @override
-  Object visitVariableDeclarationList(VariableDeclarationList node) {
+  void visitVariableDeclarationList(VariableDeclarationList node) {
     super.visitVariableDeclarationList(node);
     AstNode parent = node.parent;
     List<ElementAnnotation> elementAnnotations;
@@ -676,7 +660,6 @@
     }
     _setVariableDeclarationListAnnotations(node, elementAnnotations);
     _setVariableDeclarationListCodeRanges(node);
-    return null;
   }
 
   ElementHolder _buildClassMembers(AstNode classNode) {
@@ -827,7 +810,7 @@
  * Instances of the class `DirectiveElementBuilder` build elements for top
  * level library directives.
  */
-class DirectiveElementBuilder extends SimpleAstVisitor<Object> {
+class DirectiveElementBuilder extends SimpleAstVisitor<void> {
   /**
    * The analysis context within which directive elements are being built.
    */
@@ -903,7 +886,7 @@
       this.exportSourceKindMap);
 
   @override
-  Object visitCompilationUnit(CompilationUnit node) {
+  void visitCompilationUnit(CompilationUnit node) {
     //
     // Resolve directives.
     //
@@ -926,11 +909,10 @@
     //
     libraryElement.imports = imports;
     libraryElement.exports = exports;
-    return null;
   }
 
   @override
-  Object visitExportDirective(ExportDirective node) {
+  void visitExportDirective(ExportDirective node) {
     // Remove previous element. (It will remain null if the target is missing.)
     node.element = null;
     Source exportedSource = node.selectedSource;
@@ -962,11 +944,10 @@
       errors.add(new AnalysisError(libraryElement.source, offset, length,
           CompileTimeErrorCode.EXPORT_OF_NON_LIBRARY, [uriLiteral.toSource()]));
     }
-    return null;
   }
 
   @override
-  Object visitImportDirective(ImportDirective node) {
+  void visitImportDirective(ImportDirective node) {
     // Remove previous element. (It will remain null if the target is missing.)
     node.element = null;
     Source importedSource = node.selectedSource;
@@ -1017,21 +998,18 @@
       errors.add(new AnalysisError(libraryElement.source, offset, length,
           errorCode, [uriLiteral.toSource()]));
     }
-    return null;
   }
 
   @override
-  Object visitLibraryDirective(LibraryDirective node) {
+  void visitLibraryDirective(LibraryDirective node) {
     (node.element as LibraryElementImpl)?.metadata =
         _getElementAnnotations(node.metadata);
-    return null;
   }
 
   @override
-  Object visitPartDirective(PartDirective node) {
+  void visitPartDirective(PartDirective node) {
     (node.element as CompilationUnitElementImpl)?.metadata =
         _getElementAnnotations(node.metadata);
-    return null;
   }
 
   /**
@@ -1080,30 +1058,27 @@
       : super(initialHolder, compilationUnitElement);
 
   @override
-  Object visitBlockFunctionBody(BlockFunctionBody node) {
+  void visitBlockFunctionBody(BlockFunctionBody node) {
     _buildLocal(node);
-    return null;
   }
 
   @override
-  Object visitDefaultFormalParameter(DefaultFormalParameter node) {
+  void visitDefaultFormalParameter(DefaultFormalParameter node) {
     super.visitDefaultFormalParameter(node);
     buildParameterInitializer(
         node.declaredElement as ParameterElementImpl, node.defaultValue);
-    return null;
   }
 
   @override
-  Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
+  void visitExpressionFunctionBody(ExpressionFunctionBody node) {
     _buildLocal(node);
-    return null;
   }
 
   @override
-  Object visitMixinDeclaration(MixinDeclaration node) {
+  void visitMixinDeclaration(MixinDeclaration node) {
     _mixinSuperInvokedNames = new Set<String>();
     try {
-      return super.visitMixinDeclaration(node);
+      super.visitMixinDeclaration(node);
     } finally {
       MixinElementImpl element = node.declaredElement;
       element.superInvokedNames = _mixinSuperInvokedNames.toList();
@@ -1112,11 +1087,10 @@
   }
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     super.visitVariableDeclaration(node);
     VariableElementImpl element = node.declaredElement as VariableElementImpl;
     buildVariableInitializer(element, node.initializer);
-    return null;
   }
 
   void _buildLocal(FunctionBody body) {
@@ -1142,6 +1116,13 @@
       : super(initialHolder, compilationUnitElement);
 
   /**
+   * Initialize a newly created element builder as a first step to analyzing a
+   * dangling dart expression.
+   */
+  LocalElementBuilder.forDanglingExpression()
+      : super(new ElementHolder(), null);
+
+  /**
    * Builds the variable elements associated with [node] and stores them in
    * the element holder.
    */
@@ -1186,13 +1167,13 @@
   }
 
   @override
-  Object visitCatchClause(CatchClause node) {
+  void visitCatchClause(CatchClause node) {
     buildCatchVariableElements(node);
-    return super.visitCatchClause(node);
+    super.visitCatchClause(node);
   }
 
   @override
-  Object visitDeclaredIdentifier(DeclaredIdentifier node) {
+  void visitDeclaredIdentifier(DeclaredIdentifier node) {
     SimpleIdentifier variableName = node.identifier;
     LocalVariableElementImpl element =
         new LocalVariableElementImpl.forNode(variableName);
@@ -1211,22 +1192,20 @@
     }
     _currentHolder.addLocalVariable(element);
     variableName.staticElement = element;
-    return null;
   }
 
   @override
-  Object visitDefaultFormalParameter(DefaultFormalParameter node) {
+  void visitDefaultFormalParameter(DefaultFormalParameter node) {
     super.visitDefaultFormalParameter(node);
     buildParameterInitializer(
         node.declaredElement as ParameterElementImpl, node.defaultValue);
-    return null;
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     FunctionExpression expression = node.functionExpression;
     if (expression == null) {
-      return null;
+      return;
     }
 
     ElementHolder holder = new ElementHolder();
@@ -1255,7 +1234,7 @@
     }
 
     {
-      Block enclosingBlock = node.getAncestor((node) => node is Block);
+      Block enclosingBlock = node.thisOrAncestorOfType<Block>();
       if (enclosingBlock != null) {
         element.setVisibleRange(enclosingBlock.offset, enclosingBlock.length);
       }
@@ -1269,15 +1248,15 @@
     expression.element = element;
     node.name.staticElement = element;
     holder.validate();
-    return null;
   }
 
   @override
-  Object visitFunctionExpression(FunctionExpression node) {
+  void visitFunctionExpression(FunctionExpression node) {
     if (node.parent is FunctionDeclaration) {
       // visitFunctionDeclaration has already created the element for the
       // declaration.  We just need to visit children.
-      return super.visitFunctionExpression(node);
+      super.visitFunctionExpression(node);
+      return;
     }
 
     ElementHolder holder = new ElementHolder();
@@ -1298,43 +1277,38 @@
     if (body.isGenerator) {
       element.generator = true;
     }
-
-    {
-      Block enclosingBlock = node.getAncestor((node) => node is Block);
-      if (enclosingBlock != null) {
-        element.setVisibleRange(enclosingBlock.offset, enclosingBlock.length);
-      }
+    Block enclosingBlock = node.thisOrAncestorOfType<Block>();
+    if (enclosingBlock != null) {
+      element.setVisibleRange(enclosingBlock.offset, enclosingBlock.length);
     }
-
     element.type = new FunctionTypeImpl(element);
     element.hasImplicitReturnType = true;
     _currentHolder.addFunction(element);
     node.element = element;
     holder.validate();
-    return null;
   }
 
   @override
-  Object visitLabeledStatement(LabeledStatement node) {
+  void visitLabeledStatement(LabeledStatement node) {
     bool onSwitchStatement = node.statement is SwitchStatement;
     buildLabelElements(node.labels, onSwitchStatement, false);
-    return super.visitLabeledStatement(node);
+    super.visitLabeledStatement(node);
   }
 
   @override
-  Object visitSwitchCase(SwitchCase node) {
+  void visitSwitchCase(SwitchCase node) {
     buildLabelElements(node.labels, false, true);
-    return super.visitSwitchCase(node);
+    super.visitSwitchCase(node);
   }
 
   @override
-  Object visitSwitchDefault(SwitchDefault node) {
+  void visitSwitchDefault(SwitchDefault node) {
     buildLabelElements(node.labels, false, true);
-    return super.visitSwitchDefault(node);
+    super.visitSwitchDefault(node);
   }
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     bool isConst = node.isConst;
     bool isFinal = node.isFinal;
     Expression initializerNode = node.initializer;
@@ -1354,17 +1328,15 @@
     element.isConst = isConst;
     element.isFinal = isFinal;
     buildVariableInitializer(element, initializerNode);
-    return null;
   }
 
   @override
-  Object visitVariableDeclarationList(VariableDeclarationList node) {
+  void visitVariableDeclarationList(VariableDeclarationList node) {
     super.visitVariableDeclarationList(node);
     List<ElementAnnotation> elementAnnotations =
         _createElementAnnotations(node.metadata);
     _setVariableDeclarationListAnnotations(node, elementAnnotations);
     _setVariableDeclarationListCodeRanges(node);
-    return null;
   }
 
   void _setVariableVisibleRange(
@@ -1374,7 +1346,7 @@
     if (parent2 is ForStatement) {
       scopeNode = parent2;
     } else {
-      scopeNode = node.getAncestor((node) => node is Block);
+      scopeNode = node.thisOrAncestorOfType<Block>();
     }
     element.setVisibleRange(scopeNode.offset, scopeNode.length);
   }
@@ -1383,7 +1355,7 @@
 /**
  * Base class for API and local element builders.
  */
-abstract class _BaseElementBuilder extends RecursiveAstVisitor<Object> {
+abstract class _BaseElementBuilder extends RecursiveAstVisitor<void> {
   /**
    * The compilation unit element into which the elements being built will be
    * stored.
@@ -1444,7 +1416,7 @@
   }
 
   @override
-  Object visitDefaultFormalParameter(DefaultFormalParameter node) {
+  void visitDefaultFormalParameter(DefaultFormalParameter node) {
     NormalFormalParameter normalParameter = node.parameter;
     SimpleIdentifier parameterName = normalParameter.identifier;
     ParameterElementImpl parameter;
@@ -1474,11 +1446,10 @@
     }
     parameterName?.staticElement = parameter;
     normalParameter.accept(this);
-    return null;
   }
 
   @override
-  Object visitFieldFormalParameter(FieldFormalParameter node) {
+  void visitFieldFormalParameter(FieldFormalParameter node) {
     if (node.parent is! DefaultFormalParameter) {
       SimpleIdentifier parameterName = node.identifier;
       FieldFormalParameterElementImpl parameter =
@@ -1505,11 +1476,10 @@
       _createGenericFunctionType(element, holder);
     }
     holder.validate();
-    return null;
   }
 
   @override
-  Object visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
+  void visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
     if (node.parent is! DefaultFormalParameter) {
       SimpleIdentifier parameterName = node.identifier;
       ParameterElementImpl parameter =
@@ -1534,11 +1504,10 @@
     element.metadata = _createElementAnnotations(node.metadata);
     _createGenericFunctionType(element, holder);
     holder.validate();
-    return null;
   }
 
   @override
-  Object visitGenericFunctionType(GenericFunctionType node) {
+  void visitGenericFunctionType(GenericFunctionType node) {
     ElementHolder holder = new ElementHolder();
     _visitChildren(holder, node);
     GenericFunctionTypeElementImpl element =
@@ -1550,11 +1519,10 @@
     element.type = type;
     (node as GenericFunctionTypeImpl).type = type;
     holder.validate();
-    return null;
   }
 
   @override
-  Object visitSimpleFormalParameter(SimpleFormalParameter node) {
+  void visitSimpleFormalParameter(SimpleFormalParameter node) {
     ParameterElementImpl parameter;
     if (node.parent is! DefaultFormalParameter) {
       SimpleIdentifier parameterName = node.identifier;
@@ -1576,11 +1544,10 @@
     super.visitSimpleFormalParameter(node);
     parameter ??= node.declaredElement;
     parameter?.metadata = _createElementAnnotations(node.metadata);
-    return null;
   }
 
   @override
-  Object visitTypeParameter(TypeParameter node) {
+  void visitTypeParameter(TypeParameter node) {
     SimpleIdentifier parameterName = node.name;
     TypeParameterElementImpl typeParameter =
         new TypeParameterElementImpl.forNode(parameterName);
@@ -1591,7 +1558,7 @@
     typeParameter.type = typeParameterType;
     _currentHolder.addTypeParameter(typeParameter);
     parameterName.staticElement = typeParameter;
-    return super.visitTypeParameter(node);
+    super.visitTypeParameter(node);
   }
 
   /**
@@ -1720,54 +1687,50 @@
 /**
  * Builds elements for all node that are not constructors or methods.
  */
-class _ClassNotExecutableElementsBuilder extends UnifyingAstVisitor<Object> {
+class _ClassNotExecutableElementsBuilder extends UnifyingAstVisitor<void> {
   final ApiElementBuilder builder;
   final List<ClassMember> nonFields;
 
   _ClassNotExecutableElementsBuilder(this.builder, this.nonFields);
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     nonFields.add(node);
-    return null;
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     nonFields.add(node);
-    return null;
   }
 
   @override
-  Object visitNode(AstNode node) => node.accept(builder);
+  void visitNode(AstNode node) => node.accept(builder);
 }
 
 /**
  * Instances of the class [_NamespaceCombinatorBuilder] can be used to visit
  * [Combinator] AST nodes and generate [NamespaceCombinator] elements.
  */
-class _NamespaceCombinatorBuilder extends SimpleAstVisitor<Object> {
+class _NamespaceCombinatorBuilder extends SimpleAstVisitor<void> {
   /**
    * Elements generated so far.
    */
   final List<NamespaceCombinator> combinators = <NamespaceCombinator>[];
 
   @override
-  Object visitHideCombinator(HideCombinator node) {
+  void visitHideCombinator(HideCombinator node) {
     HideElementCombinatorImpl hide = new HideElementCombinatorImpl();
     hide.hiddenNames = _getIdentifiers(node.hiddenNames);
     combinators.add(hide);
-    return null;
   }
 
   @override
-  Object visitShowCombinator(ShowCombinator node) {
+  void visitShowCombinator(ShowCombinator node) {
     ShowElementCombinatorImpl show = new ShowElementCombinatorImpl();
     show.offset = node.offset;
     show.end = node.end;
     show.shownNames = _getIdentifiers(node.shownNames);
     combinators.add(show);
-    return null;
   }
 
   /**
diff --git a/pkg/analyzer/lib/src/dart/element/element.dart b/pkg/analyzer/lib/src/dart/element/element.dart
index 513799f..27fc635 100644
--- a/pkg/analyzer/lib/src/dart/element/element.dart
+++ b/pkg/analyzer/lib/src/dart/element/element.dart
@@ -1,15 +1,17 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:collection';
 import 'dart:math' show min;
 
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/constant/value.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
+import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
 import 'package:analyzer/src/dart/constant/compute.dart';
 import 'package:analyzer/src/dart/constant/value.dart';
@@ -106,6 +108,7 @@
   @override
   T accept<T>(ElementVisitor<T> visitor) => visitor.visitClassElement(this);
 
+  @deprecated
   @override
   NamedCompilationUnitMember computeNode() {
     if (isEnum) {
@@ -507,22 +510,49 @@
 
   @override
   List<ConstructorElement> get constructors {
+    if (_constructors != null) {
+      return _constructors;
+    }
+
     if (isMixinApplication) {
-      return _computeMixinAppConstructors();
+      return _constructors = _computeMixinAppConstructors();
     }
-    if (_unlinkedClass != null && _constructors == null) {
-      _constructors = _unlinkedClass.executables
-          .where((e) => e.kind == UnlinkedExecutableKind.constructor)
-          .map((e) => new ConstructorElementImpl.forSerialized(e, this))
-          .toList(growable: false);
-      // Ensure at least implicit default constructor.
-      if (_constructors.isEmpty) {
-        ConstructorElementImpl constructor = new ConstructorElementImpl('', -1);
-        constructor.isSynthetic = true;
-        constructor.enclosingElement = this;
-        _constructors = <ConstructorElement>[constructor];
+
+    if (_unlinkedClass != null) {
+      var unlinkedExecutables = _unlinkedClass.executables;
+
+      var length = unlinkedExecutables.length;
+      if (length != 0) {
+        var count = 0;
+        for (var i = 0; i < length; i++) {
+          var e = unlinkedExecutables[i];
+          if (e.kind == UnlinkedExecutableKind.constructor) {
+            count++;
+          }
+        }
+
+        if (count != 0) {
+          var constructors = new List<ConstructorElement>(count);
+          var index = 0;
+          for (var i = 0; i < length; i++) {
+            var e = unlinkedExecutables[i];
+            if (e.kind == UnlinkedExecutableKind.constructor) {
+              constructors[index++] =
+                  new ConstructorElementImpl.forSerialized(e, this);
+            }
+          }
+          return _constructors = constructors;
+        }
       }
+
+      // There are no explicit constructors.
+      // Create the implicit default constructor.
+      var constructor = new ConstructorElementImpl('', -1);
+      constructor.isSynthetic = true;
+      constructor.enclosingElement = this;
+      _constructors = <ConstructorElement>[constructor];
     }
+
     assert(_constructors != null);
     return _constructors ?? const <ConstructorElement>[];
   }
@@ -646,17 +676,39 @@
 
   @override
   List<InterfaceType> get interfaces {
-    if (_interfaces == null) {
-      if (_unlinkedClass != null) {
-        ResynthesizerContext context = enclosingUnit.resynthesizerContext;
-        _interfaces = _unlinkedClass.interfaces
-            .map((EntityRef t) => context.resolveTypeRef(this, t))
-            .where(_isInterfaceTypeInterface)
-            .cast<InterfaceType>()
-            .toList(growable: false);
-      }
+    if (_interfaces != null) {
+      return _interfaces;
     }
-    return _interfaces ?? const <InterfaceType>[];
+
+    if (_unlinkedClass != null) {
+      var unlinkedInterfaces = _unlinkedClass.interfaces;
+      var length = unlinkedInterfaces.length;
+      if (length == 0) {
+        return _interfaces = const <InterfaceType>[];
+      }
+
+      ResynthesizerContext context = enclosingUnit.resynthesizerContext;
+      var interfaces = new List<InterfaceType>(length);
+      var index = 0;
+      var hasNonInterfaceType = false;
+      for (var i = 0; i < length; i++) {
+        var t = unlinkedInterfaces[i];
+        var type = context.resolveTypeRef(this, t);
+        if (_isInterfaceTypeInterface(type)) {
+          interfaces[index++] = type;
+        } else {
+          hasNonInterfaceType = true;
+        }
+      }
+
+      if (hasNonInterfaceType) {
+        interfaces = interfaces.sublist(0, index);
+      }
+
+      return _interfaces = interfaces;
+    }
+
+    return _interfaces = const <InterfaceType>[];
   }
 
   void set interfaces(List<InterfaceType> interfaces) {
@@ -721,13 +773,40 @@
 
   @override
   List<MethodElement> get methods {
-    if (_unlinkedClass != null) {
-      _methods ??= _unlinkedClass.executables
-          .where((e) => e.kind == UnlinkedExecutableKind.functionOrMethod)
-          .map((e) => new MethodElementImpl.forSerialized(e, this))
-          .toList(growable: false);
+    if (_methods != null) {
+      return _methods;
     }
-    return _methods ?? const <MethodElement>[];
+
+    if (_unlinkedClass != null) {
+      var unlinkedExecutables = _unlinkedClass.executables;
+
+      var length = unlinkedExecutables.length;
+      if (length == 0) {
+        return _methods = const <MethodElement>[];
+      }
+
+      var count = 0;
+      for (var i = 0; i < length; i++) {
+        var e = unlinkedExecutables[i];
+        if (e.kind == UnlinkedExecutableKind.functionOrMethod) {
+          count++;
+        }
+      }
+      if (count == 0) {
+        return _methods = const <MethodElement>[];
+      }
+
+      var methods = new List<MethodElement>(count);
+      var index = 0;
+      for (var i = 0; i < length; i++) {
+        var e = unlinkedExecutables[i];
+        if (e.kind == UnlinkedExecutableKind.functionOrMethod) {
+          methods[index++] = new MethodElementImpl.forSerialized(e, this);
+        }
+      }
+      return _methods = methods;
+    }
+    return _methods = const <MethodElement>[];
   }
 
   /// Set the methods contained in this class to the given [methods].
@@ -747,17 +826,39 @@
 
   @override
   List<InterfaceType> get mixins {
-    if (_mixins == null) {
-      if (_unlinkedClass != null) {
-        ResynthesizerContext context = enclosingUnit.resynthesizerContext;
-        _mixins = _unlinkedClass.mixins
-            .map((EntityRef t) => context.resolveTypeRef(this, t))
-            .where(_isInterfaceTypeInterface)
-            .cast<InterfaceType>()
-            .toList(growable: false);
-      }
+    if (_mixins != null) {
+      return _mixins;
     }
-    return _mixins ?? const <InterfaceType>[];
+
+    if (_unlinkedClass != null) {
+      var unlinkedMixins = _unlinkedClass.mixins;
+      var length = unlinkedMixins.length;
+      if (length == 0) {
+        return _mixins = const <InterfaceType>[];
+      }
+
+      ResynthesizerContext context = enclosingUnit.resynthesizerContext;
+      var mixins = new List<InterfaceType>(length);
+      var index = 0;
+      var hasNonInterfaceType = false;
+      for (var i = 0; i < length; i++) {
+        var t = unlinkedMixins[i];
+        var type = context.resolveTypeRef(this, t);
+        if (_isInterfaceTypeInterface(type)) {
+          mixins[index++] = type;
+        } else {
+          hasNonInterfaceType = true;
+        }
+      }
+
+      if (hasNonInterfaceType) {
+        mixins = mixins.sublist(0, index);
+      }
+
+      return _mixins = mixins;
+    }
+
+    return _mixins = const <InterfaceType>[];
   }
 
   void set mixins(List<InterfaceType> mixins) {
@@ -1067,60 +1168,105 @@
   void _resynthesizeFieldsAndPropertyAccessors() {
     assert(_fields == null);
     assert(_accessors == null);
-    var explicitFields = <FieldElement>[];
-    var implicitAccessors = <PropertyAccessorElement>[];
-    var explicitAccessors = <PropertyAccessorElement>[];
-    var implicitFields = <String, FieldElementImpl>{};
+
+    var unlinkedFields = _unlinkedClass.fields;
+    var unlinkedExecutables = _unlinkedClass.executables;
 
     // Build explicit fields and implicit property accessors.
-    for (UnlinkedVariable v in _unlinkedClass.fields) {
-      FieldElementImpl field =
-          new FieldElementImpl.forSerializedFactory(v, this);
-      explicitFields.add(field);
-      implicitAccessors.add(
-          new PropertyAccessorElementImpl_ImplicitGetter(field)
-            ..enclosingElement = this);
-      if (!field.isConst && !field.isFinal) {
+    List<FieldElement> explicitFields;
+    List<PropertyAccessorElement> implicitAccessors;
+    var unlinkedFieldsLength = unlinkedFields.length;
+    if (unlinkedFieldsLength != 0) {
+      explicitFields = new List<FieldElement>(unlinkedFieldsLength);
+      implicitAccessors = <PropertyAccessorElement>[];
+      for (var i = 0; i < unlinkedFieldsLength; i++) {
+        var v = unlinkedFields[i];
+        FieldElementImpl field =
+            new FieldElementImpl.forSerializedFactory(v, this);
+        explicitFields[i] = field;
         implicitAccessors.add(
-            new PropertyAccessorElementImpl_ImplicitSetter(field)
+            new PropertyAccessorElementImpl_ImplicitGetter(field)
               ..enclosingElement = this);
+        if (!field.isConst && !field.isFinal) {
+          implicitAccessors.add(
+              new PropertyAccessorElementImpl_ImplicitSetter(field)
+                ..enclosingElement = this);
+        }
       }
+    } else {
+      explicitFields = const <FieldElement>[];
+      implicitAccessors = const <PropertyAccessorElement>[];
     }
-    // Build explicit property accessors and implicit fields.
-    for (UnlinkedExecutable e in _unlinkedClass.executables) {
+
+    var unlinkedExecutablesLength = unlinkedExecutables.length;
+    var getterSetterCount = 0;
+    for (var i = 0; i < unlinkedExecutablesLength; i++) {
+      var e = unlinkedExecutables[i];
       if (e.kind == UnlinkedExecutableKind.getter ||
           e.kind == UnlinkedExecutableKind.setter) {
-        PropertyAccessorElementImpl accessor =
-            new PropertyAccessorElementImpl.forSerialized(e, this);
-        explicitAccessors.add(accessor);
-        // Create or update the implicit field.
-        String fieldName = accessor.displayName;
-        FieldElementImpl field = implicitFields[fieldName];
-        if (field == null) {
-          field = new FieldElementImpl(fieldName, -1);
-          implicitFields[fieldName] = field;
-          field.enclosingElement = this;
-          field.isSynthetic = true;
-          field.isFinal = e.kind == UnlinkedExecutableKind.getter;
-          field.isStatic = e.isStatic;
-        } else {
-          field.isFinal = false;
-        }
-        accessor.variable = field;
-        if (e.kind == UnlinkedExecutableKind.getter) {
-          field.getter = accessor;
-        } else {
-          field.setter = accessor;
-        }
+        getterSetterCount++;
       }
     }
+
+    // Build explicit property accessors and implicit fields.
+    List<PropertyAccessorElement> explicitAccessors;
+    Map<String, FieldElementImpl> implicitFields;
+    if (getterSetterCount != 0) {
+      explicitAccessors = new List<PropertyAccessorElement>(getterSetterCount);
+      implicitFields = <String, FieldElementImpl>{};
+      var index = 0;
+      for (var i = 0; i < unlinkedExecutablesLength; i++) {
+        var e = unlinkedExecutables[i];
+        if (e.kind == UnlinkedExecutableKind.getter ||
+            e.kind == UnlinkedExecutableKind.setter) {
+          PropertyAccessorElementImpl accessor =
+              new PropertyAccessorElementImpl.forSerialized(e, this);
+          explicitAccessors[index++] = accessor;
+          // Create or update the implicit field.
+          String fieldName = accessor.displayName;
+          FieldElementImpl field = implicitFields[fieldName];
+          if (field == null) {
+            field = new FieldElementImpl(fieldName, -1);
+            implicitFields[fieldName] = field;
+            field.enclosingElement = this;
+            field.isSynthetic = true;
+            field.isFinal = e.kind == UnlinkedExecutableKind.getter;
+            field.isStatic = e.isStatic;
+          } else {
+            field.isFinal = false;
+          }
+          accessor.variable = field;
+          if (e.kind == UnlinkedExecutableKind.getter) {
+            field.getter = accessor;
+          } else {
+            field.setter = accessor;
+          }
+        }
+      }
+    } else {
+      explicitAccessors = const <PropertyAccessorElement>[];
+      implicitFields = const <String, FieldElementImpl>{};
+    }
+
     // Combine explicit and implicit fields and property accessors.
-    _fields = <FieldElement>[]
-      ..addAll(explicitFields)
-      ..addAll(implicitFields.values);
-    _accessors = <PropertyAccessorElement>[]
-      ..addAll(explicitAccessors)
-      ..addAll(implicitAccessors);
+    if (implicitFields.isEmpty) {
+      _fields = explicitFields;
+    } else if (explicitFields.isEmpty) {
+      _fields = implicitFields.values.toList(growable: false);
+    } else {
+      _fields = <FieldElement>[]
+        ..addAll(explicitFields)
+        ..addAll(implicitFields.values);
+    }
+    if (explicitAccessors.isEmpty) {
+      _accessors = implicitAccessors;
+    } else if (implicitAccessors.isEmpty) {
+      _accessors = explicitAccessors;
+    } else {
+      _accessors = <PropertyAccessorElement>[]
+        ..addAll(explicitAccessors)
+        ..addAll(implicitAccessors);
+    }
   }
 
   bool _safeIsOrInheritsProxy(
@@ -1524,6 +1670,7 @@
     }
   }
 
+  @deprecated
   @override
   CompilationUnit computeNode() => unit;
 
@@ -2049,6 +2196,7 @@
     super.appendTo(buffer);
   }
 
+  @deprecated
   @override
   ConstructorDeclaration computeNode() =>
       getNodeMatching((node) => node is ConstructorDeclaration);
@@ -2141,8 +2289,7 @@
 /// This interface is only used for constant variables that have initializers.
 ///
 /// This class is not intended to be part of the public API for analyzer.
-abstract class ConstVariableElement
-    implements ElementImpl, ConstantEvaluationTarget {
+mixin ConstVariableElement implements ElementImpl, ConstantEvaluationTarget {
   /// If this element represents a constant variable, and it has an initializer,
   /// a copy of the initializer for the constant.  Otherwise `null`.
   ///
@@ -2233,6 +2380,7 @@
       UnlinkedParam unlinkedParam, ElementImpl enclosingElement)
       : super.forSerialized(unlinkedParam, enclosingElement);
 
+  @deprecated
   @override
   DefaultFormalParameter computeNode() =>
       getNodeMatching((node) => node is DefaultFormalParameter);
@@ -2363,6 +2511,10 @@
   ElementAnnotationImpl(this.compilationUnit);
 
   @override
+  List<AnalysisError> get constantEvaluationErrors =>
+      evaluationResult?.errors ?? const <AnalysisError>[];
+
+  @override
   DartObject get constantValue => evaluationResult?.value;
 
   @override
@@ -2852,6 +3004,11 @@
   }
 
   @override
+  AnalysisSession get session {
+    return _enclosingElement?.session;
+  }
+
+  @override
   Source get source {
     if (_enclosingElement == null) {
       return null;
@@ -2866,6 +3023,7 @@
     return _enclosingElement?.typeParameterContext;
   }
 
+  @deprecated
   @override
   CompilationUnit get unit => context.resolveCompilationUnit(source, library);
 
@@ -2912,6 +3070,7 @@
   @override
   String computeDocumentationComment() => documentationComment;
 
+  @deprecated
   @override
   AstNode computeNode() => getNodeMatching((node) => node is AstNode);
 
@@ -2949,6 +3108,7 @@
   }
 
   /// Return the resolved [AstNode] of the given type enclosing [getNameOffset].
+  @deprecated
   AstNode getNodeMatching(Predicate<AstNode> predicate) {
     CompilationUnit unit = this.unit;
     if (unit == null) {
@@ -2959,7 +3119,7 @@
     if (node == null) {
       return null;
     }
-    return node.getAncestor(predicate);
+    return node.thisOrAncestorMatching(predicate);
   }
 
   /// Return `true` if this element has the given [modifier] associated with it.
@@ -3768,7 +3928,7 @@
   /// order in which they were specified.
   List<NamespaceCombinator> _combinators;
 
-  /// The URI that was selected based on the [context] declared variables.
+  /// The URI that was selected based on the declared variables.
   String _selectedUri;
 
   /// Initialize a newly created export element at the given [offset].
@@ -3975,6 +4135,7 @@
   @override
   T accept<T>(ElementVisitor<T> visitor) => visitor.visitFieldElement(this);
 
+  @deprecated
   @override
   AstNode computeNode() {
     if (isEnumConstant) {
@@ -4147,6 +4308,7 @@
     super.appendTo(buffer);
   }
 
+  @deprecated
   @override
   FunctionDeclaration computeNode() =>
       getNodeMatching((node) => node is FunctionDeclaration);
@@ -4619,6 +4781,7 @@
     }
   }
 
+  @deprecated
   @override
   GenericTypeAlias computeNode() =>
       getNodeMatching((node) => node is GenericTypeAlias);
@@ -4746,7 +4909,7 @@
   ///` if there was no prefix specified.
   PrefixElement _prefix;
 
-  /// The URI that was selected based on the [context] declared variables.
+  /// The URI that was selected based on the declared variables.
   String _selectedUri;
 
   /// The cached value of [namespace].
@@ -5030,6 +5193,9 @@
   /// The analysis context in which this library is defined.
   final AnalysisContext context;
 
+  @override
+  final AnalysisSession session;
+
   final LibraryResynthesizerContext resynthesizerContext;
 
   final UnlinkedUnit unlinkedDefiningUnit;
@@ -5084,22 +5250,29 @@
 
   /// Initialize a newly created library element in the given [context] to have
   /// the given [name] and [offset].
-  LibraryElementImpl(this.context, String name, int offset, this.nameLength)
+  LibraryElementImpl(
+      this.context, this.session, String name, int offset, this.nameLength)
       : resynthesizerContext = null,
         unlinkedDefiningUnit = null,
         super(name, offset);
 
   /// Initialize a newly created library element in the given [context] to have
   /// the given [name].
-  LibraryElementImpl.forNode(this.context, LibraryIdentifier name)
+  LibraryElementImpl.forNode(this.context, this.session, LibraryIdentifier name)
       : nameLength = name != null ? name.length : 0,
         resynthesizerContext = null,
         unlinkedDefiningUnit = null,
         super.forNode(name);
 
   /// Initialize using the given serialized information.
-  LibraryElementImpl.forSerialized(this.context, String name, int offset,
-      this.nameLength, this.resynthesizerContext, this.unlinkedDefiningUnit)
+  LibraryElementImpl.forSerialized(
+      this.context,
+      this.session,
+      String name,
+      int offset,
+      this.nameLength,
+      this.resynthesizerContext,
+      this.unlinkedDefiningUnit)
       : super.forSerialized(null) {
     _name = name;
     _nameOffset = offset;
@@ -5491,6 +5664,19 @@
   }
 
   @override
+  Iterable<Element> get topLevelElements sync* {
+    for (var unit in units) {
+      yield* unit.accessors;
+      yield* unit.enums;
+      yield* unit.functionTypeAliases;
+      yield* unit.functions;
+      yield* unit.mixins;
+      yield* unit.topLevelVariables;
+      yield* unit.types;
+    }
+  }
+
+  @override
   List<CompilationUnitElement> get units {
     List<CompilationUnitElement> units = new List<CompilationUnitElement>();
     units.add(_definingCompilationUnit);
@@ -5793,6 +5979,7 @@
     buffer.write(displayName);
   }
 
+  @deprecated
   @override
   Declaration computeNode() => getNodeMatching(
       (node) => node is DeclaredIdentifier || node is VariableDeclaration);
@@ -5889,6 +6076,7 @@
     super.appendTo(buffer);
   }
 
+  @deprecated
   @override
   MethodDeclaration computeNode() =>
       getNodeMatching((node) => node is MethodDeclaration);
@@ -6166,6 +6354,9 @@
   @override
   final AnalysisContext context;
 
+  @override
+  final AnalysisSession session;
+
   /// The name of the conflicting elements.
   @override
   final String name;
@@ -6175,7 +6366,8 @@
 
   /// Initialize a newly created element in the given [context] to represent
   /// the given non-empty [conflictingElements].
-  MultiplyDefinedElementImpl(this.context, this.name, this.conflictingElements);
+  MultiplyDefinedElementImpl(
+      this.context, this.session, this.name, this.conflictingElements);
 
   @override
   String get displayName => name;
@@ -6300,6 +6492,7 @@
   @override
   String computeDocumentationComment() => null;
 
+  @deprecated
   @override
   AstNode computeNode() => null;
 
@@ -6924,6 +7117,7 @@
     buffer.write(right);
   }
 
+  @deprecated
   @override
   FormalParameter computeNode() =>
       getNodeMatching((node) => node is FormalParameter);
@@ -7047,7 +7241,7 @@
 
 /// A mixin that provides a common implementation for methods defined in
 /// [ParameterElement].
-abstract class ParameterElementMixin implements ParameterElement {
+mixin ParameterElementMixin implements ParameterElement {
   @override
   bool get isNamed => parameterKind == ParameterKind.NAMED;
 
@@ -7301,6 +7495,7 @@
     super.appendTo(buffer);
   }
 
+  @deprecated
   @override
   AstNode computeNode() {
     if (isSynthetic) {
@@ -7569,7 +7764,7 @@
 
 /// Mixin providing the implementation of
 /// [TypeParameterizedElement.isSimplyBounded] for elements that define a type.
-abstract class SimplyBoundableMixin implements TypeParameterizedElement {
+mixin SimplyBoundableMixin implements TypeParameterizedElement {
   CompilationUnitElementImpl get enclosingUnit;
 
   @override
@@ -7618,6 +7813,7 @@
   T accept<T>(ElementVisitor<T> visitor) =>
       visitor.visitTopLevelVariableElement(this);
 
+  @deprecated
   @override
   VariableDeclaration computeNode() =>
       getNodeMatching((node) => node is VariableDeclaration);
@@ -7754,7 +7950,7 @@
 }
 
 /// Mixin representing an element which can have type parameters.
-abstract class TypeParameterizedElementMixin
+mixin TypeParameterizedElementMixin
     implements
         TypeParameterizedElement,
         ElementImpl,
diff --git a/pkg/analyzer/lib/src/dart/element/handle.dart b/pkg/analyzer/lib/src/dart/element/handle.dart
index 728ff86..97f978f 100644
--- a/pkg/analyzer/lib/src/dart/element/handle.dart
+++ b/pkg/analyzer/lib/src/dart/element/handle.dart
@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/constant/value.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ -117,6 +118,7 @@
   @override
   ConstructorElement get unnamedConstructor => actualElement.unnamedConstructor;
 
+  @deprecated
   @override
   NamedCompilationUnitMember computeNode() => super.computeNode();
 
@@ -246,6 +248,7 @@
   @override
   int get uriOffset => actualElement.uriOffset;
 
+  @deprecated
   @override
   CompilationUnit computeNode() => actualElement.computeNode();
 
@@ -302,6 +305,7 @@
   ConstructorElement get redirectedConstructor =>
       actualElement.redirectedConstructor;
 
+  @deprecated
   @override
   ConstructorDeclaration computeNode() => actualElement.computeNode();
 }
@@ -458,8 +462,12 @@
   int get nameOffset => actualElement.nameOffset;
 
   @override
+  AnalysisSession get session => _resynthesizer.session;
+
+  @override
   Source get source => actualElement.source;
 
+  @deprecated
   @override
   CompilationUnit get unit => actualElement.unit;
 
@@ -473,6 +481,7 @@
   @override
   String computeDocumentationComment() => documentationComment;
 
+  @deprecated
   @override
   AstNode computeNode() => actualElement.computeNode();
 
@@ -509,10 +518,17 @@
   final AnalysisContext context;
 
   /**
+   * The session that owns the element to be resynthesized.
+   * 
+   * Note that this will be `null` if the task model is being used.
+   */
+  final AnalysisSession session;
+
+  /**
    * Initialize a newly created resynthesizer to resynthesize elements in the
    * given [context].
    */
-  ElementResynthesizer(this.context);
+  ElementResynthesizer(this.context, this.session);
 
   /**
    * Return the element referenced by the given [location].
@@ -646,6 +662,7 @@
   @override
   ElementKind get kind => ElementKind.FIELD;
 
+  @deprecated
   @override
   VariableDeclaration computeNode() => actualElement.computeNode();
 }
@@ -676,6 +693,7 @@
   @override
   SourceRange get visibleRange => actualElement.visibleRange;
 
+  @deprecated
   @override
   FunctionDeclaration computeNode() => actualElement.computeNode();
 }
@@ -723,6 +741,7 @@
   @override
   List<TypeParameterElement> get typeParameters => actualElement.typeParameters;
 
+  @deprecated
   @override
   FunctionTypeAlias computeNode() => actualElement.computeNode();
 
@@ -769,6 +788,7 @@
   @override
   List<TypeParameterElement> get typeParameters => actualElement.typeParameters;
 
+  @deprecated
   @override
   FunctionTypeAlias computeNode() => actualElement.computeNode();
 
@@ -923,6 +943,9 @@
   Namespace get publicNamespace => actualElement.publicNamespace;
 
   @override
+  Iterable<Element> get topLevelElements => actualElement.topLevelElements;
+
+  @override
   List<CompilationUnitElement> get units => actualElement.units;
 
   @override
@@ -957,6 +980,7 @@
   @override
   SourceRange get visibleRange => actualElement.visibleRange;
 
+  @deprecated
   @override
   VariableDeclaration computeNode() => actualElement.computeNode();
 }
@@ -987,6 +1011,7 @@
   @override
   ElementKind get kind => ElementKind.METHOD;
 
+  @deprecated
   @override
   MethodDeclaration computeNode() => actualElement.computeNode();
 
@@ -1039,6 +1064,7 @@
   @override
   SourceRange get visibleRange => actualElement.visibleRange;
 
+  @deprecated
   @override
   FormalParameter computeNode() => super.computeNode();
 }
@@ -1164,6 +1190,7 @@
   @override
   ElementKind get kind => ElementKind.TOP_LEVEL_VARIABLE;
 
+  @deprecated
   @override
   VariableDeclaration computeNode() => super.computeNode();
 }
diff --git a/pkg/analyzer/lib/src/dart/element/inheritance_manager2.dart b/pkg/analyzer/lib/src/dart/element/inheritance_manager2.dart
index 8d18330..d523d07 100644
--- a/pkg/analyzer/lib/src/dart/element/inheritance_manager2.dart
+++ b/pkg/analyzer/lib/src/dart/element/inheritance_manager2.dart
@@ -71,13 +71,13 @@
       return Interface._empty;
     }
 
-    Map<Name, FunctionType> map = {};
     Map<Name, List<FunctionType>> namedCandidates = {};
     List<Map<Name, FunctionType>> superImplemented = [];
+    Map<Name, FunctionType> declared;
     try {
       // If a class declaration has a member declaration, the signature of that
       // member declaration becomes the signature in the interface.
-      _addTypeMembers(map, type);
+      declared = _getTypeMembers(type);
 
       for (var interface in type.interfaces) {
         _addCandidates(namedCandidates, interface);
@@ -123,6 +123,7 @@
     // super-interfaces that is a valid override of all the other
     // super-interface signatures with the same name. That "most specific"
     // signature becomes the signature of the class's interface.
+    Map<Name, FunctionType> map = new Map.of(declared);
     List<Conflict> conflicts = _findMostSpecificFromNamedCandidates(
       map,
       namedCandidates,
@@ -130,6 +131,7 @@
 
     var interface = new Interface._(
       map,
+      declared,
       namedCandidates,
       superImplemented,
       conflicts ?? const [],
@@ -197,20 +199,6 @@
     }
   }
 
-  void _addTypeMembers(Map<Name, FunctionType> map, InterfaceType type) {
-    var libraryUri = type.element.librarySource.uri;
-
-    void addTypeMember(ExecutableElement member) {
-      if (!member.isStatic) {
-        var name = new Name(libraryUri, member.name);
-        map[name] = member.type;
-      }
-    }
-
-    type.methods.forEach(addTypeMember);
-    type.accessors.forEach(addTypeMember);
-  }
-
   /// Check that all [candidates] for the given [name] have the same kind, all
   /// getters, all methods, or all setter.  If a conflict found, return the
   /// new [Conflict] instance that describes it.
@@ -389,6 +377,31 @@
     _mixinMembers[type] = implemented;
     return implemented;
   }
+
+  Map<Name, FunctionType> _getTypeMembers(InterfaceType type) {
+    var declared = <Name, FunctionType>{};
+    var libraryUri = type.element.librarySource.uri;
+
+    var methods = type.methods;
+    for (var i = 0; i < methods.length; i++) {
+      var method = methods[i];
+      if (!method.isStatic) {
+        var name = new Name(libraryUri, method.name);
+        declared[name] = method.type;
+      }
+    }
+
+    var accessors = type.accessors;
+    for (var i = 0; i < accessors.length; i++) {
+      var accessor = accessors[i];
+      if (!accessor.isStatic) {
+        var name = new Name(libraryUri, accessor.name);
+        declared[name] = accessor.type;
+      }
+    }
+
+    return declared;
+  }
 }
 
 /// The instance interface of an [InterfaceType].
@@ -396,6 +409,7 @@
   static const _empty = const Interface._(
     const {},
     const {},
+    const {},
     const [{}],
     const [],
   );
@@ -403,6 +417,9 @@
   /// The map of names to their signature in the interface.
   final Map<Name, FunctionType> map;
 
+  /// The map of declared names to their signatures.
+  final Map<Name, FunctionType> declared;
+
   /// The map of names to their signatures from the mixins, superclasses,
   /// or interfaces.
   final Map<Name, List<FunctionType>> _overridden;
@@ -420,6 +437,7 @@
 
   const Interface._(
     this.map,
+    this.declared,
     this._overridden,
     this._superImplemented,
     this.conflicts,
diff --git a/pkg/analyzer/lib/src/dart/element/member.dart b/pkg/analyzer/lib/src/dart/element/member.dart
index c5f7657..bc18d7b7 100644
--- a/pkg/analyzer/lib/src/dart/element/member.dart
+++ b/pkg/analyzer/lib/src/dart/element/member.dart
@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/constant/value.dart';
 import 'package:analyzer/dart/element/element.dart';
@@ -63,6 +64,7 @@
   T accept<T>(ElementVisitor<T> visitor) =>
       visitor.visitConstructorElement(this);
 
+  @deprecated
   @override
   ConstructorDeclaration computeNode() => baseElement.computeNode();
 
@@ -268,6 +270,7 @@
   @override
   T accept<T>(ElementVisitor<T> visitor) => visitor.visitFieldElement(this);
 
+  @deprecated
   @override
   VariableDeclaration computeNode() => baseElement.computeNode();
 
@@ -326,6 +329,7 @@
   @override
   T accept<T>(ElementVisitor<T> visitor) => visitor.visitFunctionElement(this);
 
+  @deprecated
   @override
   FunctionDeclaration computeNode() => baseElement.computeNode();
 
@@ -496,14 +500,19 @@
   int get nameOffset => _baseElement.nameOffset;
 
   @override
+  AnalysisSession get session => _baseElement.session;
+
+  @override
   Source get source => _baseElement.source;
 
+  @deprecated
   @override
   CompilationUnit get unit => _baseElement.unit;
 
   @override
   String computeDocumentationComment() => documentationComment;
 
+  @deprecated
   @override
   AstNode computeNode() => _baseElement.computeNode();
 
@@ -586,6 +595,7 @@
   @override
   T accept<T>(ElementVisitor<T> visitor) => visitor.visitMethodElement(this);
 
+  @deprecated
   @override
   MethodDeclaration computeNode() => baseElement.computeNode();
 
@@ -729,6 +739,7 @@
   @override
   T accept<T>(ElementVisitor<T> visitor) => visitor.visitParameterElement(this);
 
+  @deprecated
   @override
   FormalParameter computeNode() => baseElement.computeNode();
 
diff --git a/pkg/analyzer/lib/src/dart/element/type.dart b/pkg/analyzer/lib/src/dart/element/type.dart
index b566cbb..86b41bc 100644
--- a/pkg/analyzer/lib/src/dart/element/type.dart
+++ b/pkg/analyzer/lib/src/dart/element/type.dart
@@ -2053,6 +2053,16 @@
   @override
   DartType replaceTopAndBottom(TypeProvider typeProvider,
       {bool isCovariant: true}) {
+    // First check if this is actually an instance of Bottom
+    if (this.isDartCoreNull) {
+      if (isCovariant) {
+        return this;
+      } else {
+        return typeProvider.objectType;
+      }
+    }
+
+    // Otherwise, recurse over type arguments.
     var typeArguments = _transformOrShare(
         this.typeArguments,
         (t) => (t as TypeImpl)
diff --git a/pkg/analyzer/lib/src/dart/element/wrapped.dart b/pkg/analyzer/lib/src/dart/element/wrapped.dart
index aaad9cd..3dfc8d6 100644
--- a/pkg/analyzer/lib/src/dart/element/wrapped.dart
+++ b/pkg/analyzer/lib/src/dart/element/wrapped.dart
@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart' hide Directive;
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/dart/resolver/scope.dart';
@@ -151,6 +152,9 @@
   int get nameOffset => wrappedUnit.nameOffset;
 
   @override
+  AnalysisSession get session => wrappedUnit.session;
+
+  @override
   Source get source => wrappedUnit.source;
 
   @override
@@ -160,6 +164,7 @@
   @override
   List<ClassElement> get types => wrappedUnit.types;
 
+  @deprecated
   @override
   CompilationUnit get unit => wrappedUnit.unit;
 
@@ -179,6 +184,7 @@
   String computeDocumentationComment() => wrappedUnit
       .computeDocumentationComment(); // ignore: deprecated_member_use
 
+  @deprecated
   @override
   CompilationUnit computeNode() => wrappedUnit.computeNode();
 
@@ -342,8 +348,12 @@
   int get prefixOffset => wrappedImport.prefixOffset;
 
   @override
+  AnalysisSession get session => wrappedImport.session;
+
+  @override
   Source get source => wrappedImport.source;
 
+  @deprecated
   @override
   CompilationUnit get unit => wrappedImport.unit;
 
@@ -363,6 +373,7 @@
   String computeDocumentationComment() => wrappedImport
       .computeDocumentationComment(); // ignore: deprecated_member_use
 
+  @deprecated
   @override
   AstNode computeNode() => wrappedImport.computeNode();
 
@@ -560,9 +571,16 @@
   Namespace get publicNamespace => wrappedLib.publicNamespace;
 
   @override
+  AnalysisSession get session => wrappedLib.session;
+
+  @override
   Source get source => wrappedLib.source;
 
   @override
+  Iterable<Element> get topLevelElements => wrappedLib.topLevelElements;
+
+  @deprecated
+  @override
   CompilationUnit get unit => wrappedLib.unit;
 
   @override
@@ -575,6 +593,7 @@
   String computeDocumentationComment() =>
       wrappedLib.computeDocumentationComment(); // ignore: deprecated_member_use
 
+  @deprecated
   @override
   AstNode computeNode() => wrappedLib.computeNode();
 
diff --git a/pkg/analyzer/lib/src/dart/error/hint_codes.dart b/pkg/analyzer/lib/src/dart/error/hint_codes.dart
index 12f0423..b6364f8 100644
--- a/pkg/analyzer/lib/src/dart/error/hint_codes.dart
+++ b/pkg/analyzer/lib/src/dart/error/hint_codes.dart
@@ -571,21 +571,6 @@
 
   /**
    * This hint is generated anywhere where the
-   * [StaticTypeWarningCode.UNDEFINED_METHOD] would have been generated, if we
-   * used propagated information for the warnings.
-   *
-   * Parameters:
-   * 0: the name of the method that is undefined
-   * 1: the resolved type name that the method lookup is happening on
-   */
-  static const HintCode UNDEFINED_METHOD = const HintCode(
-      'UNDEFINED_METHOD', "The method '{0}' isn't defined for the class '{1}'.",
-      correction:
-          "Try correcting the name to the name of an existing method, or "
-          "defining a method named '{0}'.");
-
-  /**
-   * This hint is generated anywhere where the
    * [StaticTypeWarningCode.UNDEFINED_OPERATOR] would have been generated, if we
    * used propagated information for the warnings.
    *
diff --git a/pkg/analyzer/lib/src/dart/resolver/method_invocation_resolver.dart b/pkg/analyzer/lib/src/dart/resolver/method_invocation_resolver.dart
new file mode 100644
index 0000000..46f8334
--- /dev/null
+++ b/pkg/analyzer/lib/src/dart/resolver/method_invocation_resolver.dart
@@ -0,0 +1,625 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/dart/ast/token.dart';
+import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/dart/element/type.dart';
+import 'package:analyzer/src/dart/ast/ast.dart';
+import 'package:analyzer/src/dart/element/element.dart';
+import 'package:analyzer/src/dart/element/inheritance_manager2.dart';
+import 'package:analyzer/src/dart/element/member.dart';
+import 'package:analyzer/src/dart/element/type.dart';
+import 'package:analyzer/src/dart/resolver/scope.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:analyzer/src/generated/resolver.dart';
+
+class MethodInvocationResolver {
+  static final _nameCall = new Name(null, 'call');
+
+  /// The resolver driving this participant.
+  final ResolverVisitor _resolver;
+
+  /// The type representing the type 'dynamic'.
+  final DynamicTypeImpl _dynamicType = DynamicTypeImpl.instance;
+
+  /// The type representing the type 'type'.
+  final InterfaceType _typeType;
+
+  /// The manager for the inheritance mappings.
+  final InheritanceManager2 _inheritance;
+
+  /// The element for the library containing the compilation unit being visited.
+  final LibraryElement _definingLibrary;
+
+  /// The URI of [_definingLibrary].
+  final Uri _definingLibraryUri;
+
+  /// The object keeping track of which elements have had their types promoted.
+  final TypePromotionManager _promoteManager;
+
+  /// The [Name] object of the invocation being resolved by [resolve].
+  Name _currentName;
+
+  MethodInvocationResolver(this._resolver)
+      : _typeType = _resolver.typeProvider.typeType,
+        _inheritance = _resolver.inheritance,
+        _definingLibrary = _resolver.definingLibrary,
+        _definingLibraryUri = _resolver.definingLibrary.source.uri,
+        _promoteManager = _resolver.promoteManager;
+
+  /// The scope used to resolve identifiers.
+  Scope get nameScope => _resolver.nameScope;
+
+  void resolve(MethodInvocation node) {
+    SimpleIdentifier nameNode = node.methodName;
+    String name = nameNode.name;
+    _currentName = Name(_definingLibraryUri, name);
+
+    //
+    // Synthetic identifiers have been already reported during parsing.
+    //
+    if (nameNode.isSynthetic) {
+      return;
+    }
+
+    Expression receiver = node.realTarget;
+
+    if (receiver == null) {
+      _resolveReceiverNull(node, nameNode, name);
+      return;
+    }
+
+    if (receiver is NullLiteral) {
+      _setDynamicResolution(node);
+      return;
+    }
+
+    if (receiver is SimpleIdentifier) {
+      var receiverElement = receiver.staticElement;
+      if (receiverElement is PrefixElement) {
+        _resolveReceiverPrefix(node, receiver, receiverElement, nameNode, name);
+        return;
+      }
+    }
+
+    if (receiver is SuperExpression) {
+      _resolveReceiverSuper(node, receiver, nameNode, name);
+      return;
+    }
+
+    ClassElement typeReference = getTypeReference(receiver);
+    if (typeReference != null) {
+      _resolveReceiverTypeLiteral(node, typeReference, nameNode, name);
+      return;
+    }
+
+    DartType receiverType = receiver.staticType;
+    receiverType = _resolveTypeParameter(receiverType);
+
+    if (receiverType is InterfaceType) {
+      _resolveReceiverInterfaceType(node, receiverType, nameNode, name);
+      return;
+    }
+
+    if (receiverType is DynamicTypeImpl) {
+      _resolveReceiverDynamic(node, name);
+      return;
+    }
+
+    if (receiverType is FunctionType) {
+      _resolveReceiverFunctionType(
+          node, receiver, receiverType, nameNode, name);
+      return;
+    }
+
+    if (receiverType is VoidType) {
+      _reportUseOfVoidType(node, receiver);
+      return;
+    }
+  }
+
+  /// Given an [argumentList] and the executable [element] that  will be invoked
+  /// using those arguments, compute the list of parameters that correspond to
+  /// the list of arguments. Return the parameters that correspond to the
+  /// arguments, or `null` if no correspondence could be computed.
+  List<ParameterElement> _computeCorrespondingParameters(
+      ArgumentList argumentList, DartType type) {
+    if (type is InterfaceType) {
+      MethodElement callMethod =
+          type.lookUpMethod(FunctionElement.CALL_METHOD_NAME, _definingLibrary);
+      if (callMethod != null) {
+        return _resolveArgumentsToFunction(false, argumentList, callMethod);
+      }
+    } else if (type is FunctionType) {
+      return _resolveArgumentsToParameters(
+          false, argumentList, type.parameters);
+    }
+    return null;
+  }
+
+  DartType _getCalleeType(FunctionType targetType) {
+    if (targetType.element.kind == ElementKind.GETTER) {
+      var calleeType = (targetType as FunctionTypeImpl).returnType;
+      calleeType = _resolveTypeParameter(calleeType);
+      return calleeType;
+    }
+    return targetType;
+  }
+
+  /// Check for a generic type, and apply type arguments.
+  FunctionType _instantiateFunctionType(
+      FunctionType invokeType, TypeArgumentList typeArguments, AstNode node) {
+    var typeFormals = invokeType.typeFormals;
+    var arguments = typeArguments?.arguments;
+    if (arguments != null && arguments.length != typeFormals.length) {
+      _resolver.errorReporter.reportErrorForNode(
+          StaticTypeWarningCode.WRONG_NUMBER_OF_TYPE_ARGUMENTS_METHOD,
+          node,
+          [invokeType, typeFormals.length, arguments?.length ?? 0]);
+      arguments = null;
+    }
+
+    if (typeFormals.isNotEmpty) {
+      if (arguments == null) {
+        return _resolver.typeSystem.instantiateToBounds(invokeType);
+      } else {
+        return invokeType.instantiate(arguments.map((n) => n.type).toList());
+      }
+    }
+
+    return invokeType;
+  }
+
+  bool _isCoreFunction(DartType type) {
+    // TODO(scheglov) Can we optimize this?
+    return type is InterfaceType && type.isDartCoreFunction;
+  }
+
+  ExecutableElement _lookUpClassMember(ClassElement element, String name) {
+    // TODO(scheglov) Use class hierarchy.
+    return element.lookUpMethod(name, _definingLibrary);
+  }
+
+  void _reportInvocationOfNonFunction(MethodInvocation node) {
+    _setDynamicResolution(node, setNameTypeToDynamic: false);
+    _resolver.errorReporter.reportErrorForNode(
+      StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION,
+      node.methodName,
+      [node.methodName.name],
+    );
+  }
+
+  void _reportPrefixIdentifierNotFollowedByDot(SimpleIdentifier target) {
+    _resolver.errorReporter.reportErrorForNode(
+      CompileTimeErrorCode.PREFIX_IDENTIFIER_NOT_FOLLOWED_BY_DOT,
+      target,
+      [target.name],
+    );
+  }
+
+  void _reportUndefinedFunction(
+      MethodInvocation node, Identifier ignorableIdentifier) {
+    _setDynamicResolution(node);
+
+    // TODO(scheglov) This is duplication.
+    if (nameScope.shouldIgnoreUndefined(ignorableIdentifier)) {
+      return;
+    }
+
+    _resolver.errorReporter.reportErrorForNode(
+      StaticTypeWarningCode.UNDEFINED_FUNCTION,
+      node.methodName,
+      [node.methodName.name],
+    );
+  }
+
+  void _reportUndefinedMethod(
+      MethodInvocation node, String name, ClassElement typeReference) {
+    _setDynamicResolution(node);
+    _resolver.errorReporter.reportErrorForNode(
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+      node.methodName,
+      [name, typeReference.displayName],
+    );
+  }
+
+  void _reportUseOfVoidType(MethodInvocation node, AstNode errorNode) {
+    _setDynamicResolution(node);
+    _resolver.errorReporter.reportErrorForNode(
+      StaticWarningCode.USE_OF_VOID_RESULT,
+      errorNode,
+    );
+  }
+
+  /// Given an [argumentList] and the [executableElement] that will be invoked
+  /// using those argument, compute the list of parameters that correspond to the
+  /// list of arguments. An error will be reported if any of the arguments cannot
+  /// be matched to a parameter. The flag [reportAsError] should be `true` if a
+  /// compile-time error should be reported; or `false` if a compile-time warning
+  /// should be reported. Return the parameters that correspond to the arguments,
+  /// or `null` if no correspondence could be computed.
+  List<ParameterElement> _resolveArgumentsToFunction(bool reportAsError,
+      ArgumentList argumentList, ExecutableElement executableElement) {
+    if (executableElement == null) {
+      return null;
+    }
+    List<ParameterElement> parameters = executableElement.parameters;
+    return _resolveArgumentsToParameters(
+        reportAsError, argumentList, parameters);
+  }
+
+  /// Given an [argumentList] and the [parameters] related to the element that
+  /// will be invoked using those arguments, compute the list of parameters that
+  /// correspond to the list of arguments. An error will be reported if any of
+  /// the arguments cannot be matched to a parameter. The flag [reportAsError]
+  /// should be `true` if a compile-time error should be reported; or `false` if
+  /// a compile-time warning should be reported. Return the parameters that
+  /// correspond to the arguments.
+  List<ParameterElement> _resolveArgumentsToParameters(bool reportAsError,
+      ArgumentList argumentList, List<ParameterElement> parameters) {
+    return ResolverVisitor.resolveArgumentsToParameters(
+        argumentList, parameters, _resolver.errorReporter.reportErrorForNode,
+        reportAsError: reportAsError);
+  }
+
+  /// Given that we are accessing a property of the given [classElement] with the
+  /// given [propertyName], return the element that represents the property.
+  Element _resolveElement(
+      ClassElement classElement, SimpleIdentifier propertyName) {
+    // TODO(scheglov) Replace with class hierarchy.
+    String name = propertyName.name;
+    Element element = null;
+    if (propertyName.inSetterContext()) {
+      element = classElement.getSetter(name);
+    }
+    if (element == null) {
+      element = classElement.getGetter(name);
+    }
+    if (element == null) {
+      element = classElement.getMethod(name);
+    }
+    if (element != null && element.isAccessibleIn(_definingLibrary)) {
+      return element;
+    }
+    return null;
+  }
+
+  void _resolveReceiverDynamic(MethodInvocation node, String name) {
+    _setDynamicResolution(node);
+  }
+
+  void _resolveReceiverFunctionType(MethodInvocation node, Expression receiver,
+      FunctionType receiverType, SimpleIdentifier nameNode, String name) {
+    if (name == FunctionElement.CALL_METHOD_NAME) {
+      _setResolution(node, receiverType);
+      // TODO(scheglov) Replace this with using FunctionType directly.
+      // Here was erase resolution that _setResolution() sets.
+      nameNode.staticElement = null;
+      nameNode.staticType = _dynamicType;
+      return;
+    }
+
+    // We can invoke Object methods on Function.
+    var type = _inheritance.getMember(
+      _resolver.typeProvider.objectType,
+      new Name(null, name),
+    );
+    if (type != null) {
+      nameNode.staticElement = type.element;
+      return _setResolution(node, type);
+    }
+
+    _reportUndefinedMethod(
+      node,
+      name,
+      _resolver.typeProvider.functionType.element,
+    );
+  }
+
+  void _resolveReceiverInterfaceType(MethodInvocation node,
+      InterfaceType receiverType, SimpleIdentifier nameNode, String name) {
+    if (_isCoreFunction(receiverType) &&
+        name == FunctionElement.CALL_METHOD_NAME) {
+      _setDynamicResolution(node);
+      return;
+    }
+
+    var targetType = _inheritance.getMember(receiverType, _currentName);
+    if (targetType != null) {
+      var calleeType = _getCalleeType(targetType);
+
+      // TODO(scheglov) This is bad, we have to create members here.
+      // Find a way to avoid this.
+      Element element;
+      var baseElement = targetType.element;
+      if (baseElement is MethodElement) {
+        element = MethodMember.from(baseElement, receiverType);
+      } else if (baseElement is PropertyAccessorElement) {
+        element = PropertyAccessorMember.from(baseElement, receiverType);
+      }
+      nameNode.staticElement = element;
+
+      return _setResolution(node, calleeType);
+    }
+
+    // The interface of the receiver does not have an instance member.
+    // Try to recover and find a member in the class.
+    var targetElement = _lookUpClassMember(receiverType.element, name);
+    if (targetElement != null && targetElement.isStatic) {
+      nameNode.staticElement = targetElement;
+      _setDynamicResolution(node);
+      _resolver.errorReporter.reportErrorForNode(
+        StaticTypeWarningCode.INSTANCE_ACCESS_TO_STATIC_MEMBER,
+        nameNode,
+        [
+          name,
+          targetElement.kind.displayName,
+          targetElement.enclosingElement.displayName,
+        ],
+      );
+      return;
+    }
+
+    _setDynamicResolution(node);
+    _resolver.errorReporter.reportErrorForNode(
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+      nameNode,
+      [name, receiverType.element.displayName],
+    );
+  }
+
+  void _resolveReceiverNull(
+      MethodInvocation node, SimpleIdentifier nameNode, String name) {
+    var element = nameScope.lookup(nameNode, _definingLibrary);
+    if (element != null) {
+      nameNode.staticElement = element;
+      if (element is MultiplyDefinedElement) {
+        MultiplyDefinedElement multiply = element;
+        element = multiply.conflictingElements[0];
+      }
+      if (element is ExecutableElement) {
+        var calleeType = _getCalleeType(element.type);
+        return _setResolution(node, calleeType);
+      }
+      if (element is VariableElement) {
+        var targetType = _promoteManager.getStaticType(element);
+        return _setResolution(node, targetType);
+      }
+      // TODO(scheglov) This is a questionable distinction.
+      if (element is PrefixElement) {
+        _setDynamicResolution(node);
+        return _reportPrefixIdentifierNotFollowedByDot(nameNode);
+      }
+      return _reportInvocationOfNonFunction(node);
+    }
+
+    ClassElement enclosingClass = _resolver.enclosingClass;
+    if (enclosingClass == null) {
+      return _reportUndefinedFunction(node, node.methodName);
+    }
+
+    var receiverType = enclosingClass.type;
+    var targetType = _inheritance.getMember(receiverType, _currentName);
+
+    if (targetType != null) {
+      nameNode.staticElement = targetType.element;
+      var calleeType = _getCalleeType(targetType);
+      return _setResolution(node, calleeType);
+    }
+
+    var targetElement = _lookUpClassMember(enclosingClass, name);
+    if (targetElement != null && targetElement.isStatic) {
+      nameNode.staticElement = targetElement;
+      _setDynamicResolution(node);
+      _resolver.errorReporter.reportErrorForNode(
+        StaticTypeWarningCode.UNQUALIFIED_REFERENCE_TO_NON_LOCAL_STATIC_MEMBER,
+        nameNode,
+        [receiverType.displayName],
+      );
+      return;
+    }
+
+    return _reportUndefinedMethod(node, name, enclosingClass);
+  }
+
+  void _resolveReceiverPrefix(MethodInvocation node, SimpleIdentifier receiver,
+      PrefixElement prefix, SimpleIdentifier nameNode, String name) {
+    if (node.operator.type == TokenType.QUESTION_PERIOD) {
+      _reportPrefixIdentifierNotFollowedByDot(receiver);
+    }
+
+    if (name == FunctionElement.LOAD_LIBRARY_NAME) {
+      var imports = _definingLibrary.getImportsWithPrefix(prefix);
+      if (imports.length == 1 && imports[0].isDeferred) {
+        var importedLibrary = imports[0].importedLibrary;
+        var loadLibraryFunction = importedLibrary?.loadLibraryFunction;
+        nameNode.staticElement = loadLibraryFunction;
+        node.staticInvokeType = loadLibraryFunction?.type;
+        node.staticType = loadLibraryFunction?.returnType;
+        return;
+      }
+    }
+
+    // TODO(scheglov) I don't like how we resolve prefixed names.
+    // But maybe this is the only one solution.
+    var prefixedName = new PrefixedIdentifierImpl.temp(receiver, nameNode);
+    var element = nameScope.lookup(prefixedName, _definingLibrary);
+    nameNode.staticElement = element;
+
+    if (element is MultiplyDefinedElement) {
+      MultiplyDefinedElement multiply = element;
+      element = multiply.conflictingElements[0];
+    }
+
+    if (element is ExecutableElement) {
+      var calleeType = _getCalleeType(element.type);
+      return _setResolution(node, calleeType);
+    }
+
+    _reportUndefinedFunction(node, prefixedName);
+  }
+
+  void _resolveReceiverSuper(MethodInvocation node, SuperExpression receiver,
+      SimpleIdentifier nameNode, String name) {
+    if (!_isSuperInValidContext(receiver)) {
+      return;
+    }
+
+    var receiverType = _resolver.enclosingClass.type;
+    var targetType = _inheritance.getMember(
+      receiverType,
+      _currentName,
+      forSuper: true,
+    );
+
+    // If there is that concrete dispatch target, then we are done.
+    if (targetType != null) {
+      nameNode.staticElement = targetType.element;
+      var calleeType = _getCalleeType(targetType);
+      _setResolution(node, calleeType);
+      return;
+    }
+
+    // Otherwise, this is an error.
+    // But we would like to give the user at least some resolution.
+    // So, we try to find the interface target.
+    targetType = _inheritance.getInherited(receiverType, _currentName);
+    if (targetType != null) {
+      nameNode.staticElement = targetType.element;
+      var calleeType = _getCalleeType(targetType);
+      _setResolution(node, calleeType);
+
+      ClassElementImpl receiverSuperClass = AbstractClassElementImpl.getImpl(
+        receiverType.element.supertype.element,
+      );
+      if (receiverSuperClass.hasNoSuchMethod) {
+        return;
+      }
+
+      _resolver.errorReporter.reportErrorForNode(
+          CompileTimeErrorCode.ABSTRACT_SUPER_MEMBER_REFERENCE,
+          nameNode,
+          [targetType.element.kind.displayName, name]);
+      return;
+    }
+
+    // Nothing help, there is no target at all.
+    _setDynamicResolution(node);
+    _resolver.errorReporter.reportErrorForNode(
+        StaticTypeWarningCode.UNDEFINED_SUPER_METHOD,
+        nameNode,
+        [name, _resolver.enclosingClass.displayName]);
+  }
+
+  void _resolveReceiverTypeLiteral(MethodInvocation node, ClassElement receiver,
+      SimpleIdentifier nameNode, String name) {
+    if (node.isCascaded) {
+      receiver = _typeType.element;
+    }
+
+    var element = _resolveElement(receiver, nameNode);
+    if (element != null) {
+      if (element is ExecutableElement) {
+        nameNode.staticElement = element;
+        var calleeType = _getCalleeType(element.type);
+        _setResolution(node, calleeType);
+      } else {
+        _reportInvocationOfNonFunction(node);
+      }
+      return;
+    }
+
+    _reportUndefinedMethod(node, name, receiver);
+  }
+
+  /// If the given [type] is a type parameter, replace with its bound.
+  /// Otherwise, return the original type.
+  DartType _resolveTypeParameter(DartType type) {
+    if (type is TypeParameterType) {
+      return type.resolveToBound(_resolver.typeProvider.objectType);
+    }
+    return type;
+  }
+
+  void _setDynamicResolution(MethodInvocation node,
+      {bool setNameTypeToDynamic: true}) {
+    if (setNameTypeToDynamic) {
+      node.methodName.staticType = _dynamicType;
+    }
+    node.staticInvokeType = _dynamicType;
+    node.staticType = _dynamicType;
+  }
+
+  void _setResolution(MethodInvocation node, DartType type) {
+    if (type == _dynamicType || _isCoreFunction(type)) {
+      _setDynamicResolution(node);
+      return;
+    }
+
+    // TODO(scheglov) We need this for StaticTypeAnalyzer to run inference.
+    // But it seems weird. Do we need to know the raw type of a function?!
+    node.methodName.staticType = type;
+
+    if (type is InterfaceType) {
+      var call = _inheritance.getMember(type, _nameCall);
+      if (call != null && call.element.kind == ElementKind.METHOD) {
+        type = call;
+      }
+    }
+
+    if (type is FunctionType) {
+      // TODO(scheglov) Extract this when receiver is already FunctionType?
+      var instantiatedType = _instantiateFunctionType(
+        type,
+        node.typeArguments,
+        node.methodName,
+      );
+      node.staticInvokeType = instantiatedType;
+      node.staticType = instantiatedType.returnType;
+      // TODO(scheglov) too much magic
+      node.argumentList.correspondingStaticParameters =
+          _computeCorrespondingParameters(
+        node.argumentList,
+        instantiatedType,
+      );
+      return;
+    }
+
+    if (type is VoidType) {
+      return _reportUseOfVoidType(node, node.methodName);
+    }
+
+    _reportInvocationOfNonFunction(node);
+  }
+
+  /// Checks whether the given [expression] is a reference to a class. If it is
+  /// then the element representing the class is returned, otherwise `null` is
+  /// returned.
+  static ClassElement getTypeReference(Expression expression) {
+    if (expression is Identifier) {
+      Element staticElement = expression.staticElement;
+      if (staticElement is ClassElement) {
+        return staticElement;
+      }
+    }
+    return null;
+  }
+
+  /// Return `true` if the given 'super' [expression] is used in a valid context.
+  static bool _isSuperInValidContext(SuperExpression expression) {
+    for (AstNode node = expression; node != null; node = node.parent) {
+      if (node is CompilationUnit) {
+        return false;
+      } else if (node is ConstructorDeclaration) {
+        return node.factoryKeyword == null;
+      } else if (node is ConstructorFieldInitializer) {
+        return false;
+      } else if (node is MethodDeclaration) {
+        return !node.isStatic;
+      }
+    }
+    return false;
+  }
+}
diff --git a/pkg/analyzer/lib/src/dart/resolver/scope.dart b/pkg/analyzer/lib/src/dart/resolver/scope.dart
index 4d71222..f1fb360 100644
--- a/pkg/analyzer/lib/src/dart/resolver/scope.dart
+++ b/pkg/analyzer/lib/src/dart/resolver/scope.dart
@@ -537,8 +537,11 @@
         var conflictingElements = <Element>[]
           ..addAll(sdkElements)
           ..addAll(nonSdkElements);
-        return new MultiplyDefinedElementImpl(_definingLibrary.context,
-            conflictingElements.first.name, conflictingElements);
+        return new MultiplyDefinedElementImpl(
+            _definingLibrary.context,
+            _definingLibrary.session,
+            conflictingElements.first.name,
+            conflictingElements);
       }
       if (nonSdkElements.isNotEmpty) {
         result = nonSdkElements.first;
@@ -1011,8 +1014,7 @@
    * not be determined.
    */
   Source getSource(AstNode identifier) {
-    CompilationUnit unit =
-        identifier.getAncestor((node) => node is CompilationUnit);
+    CompilationUnit unit = identifier.thisOrAncestorOfType<CompilationUnit>();
     if (unit != null) {
       CompilationUnitElement unitElement = unit.declaredElement;
       if (unitElement != null) {
diff --git a/pkg/analyzer/lib/src/dart/scanner/scanner.dart b/pkg/analyzer/lib/src/dart/scanner/scanner.dart
index 25af788e..ab852cf 100644
--- a/pkg/analyzer/lib/src/dart/scanner/scanner.dart
+++ b/pkg/analyzer/lib/src/dart/scanner/scanner.dart
@@ -54,6 +54,11 @@
   bool scanLazyAssignmentOperators = false;
 
   /**
+   * A flag indicating whether the scanner should recognize the `>>>` operator.
+   */
+  bool enableGtGtGt = false;
+
+  /**
    * Initialize a newly created scanner to scan characters from the given
    * [source]. The given character [reader] will be used to read the characters
    * in the source. The given [_errorListener] will be informed of any errors
@@ -99,6 +104,7 @@
 
   Token tokenize() {
     fasta.ScannerResult result = fasta.scanString(_contents,
+        enableGtGtGt: enableGtGtGt,
         includeComments: _preserveComments,
         scanLazyAssignmentOperators: scanLazyAssignmentOperators);
 
diff --git a/pkg/analyzer/lib/src/error/codes.dart b/pkg/analyzer/lib/src/error/codes.dart
index d966ee8..a3cff21 100644
--- a/pkg/analyzer/lib/src/error/codes.dart
+++ b/pkg/analyzer/lib/src/error/codes.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -49,14 +49,6 @@
           "'{1}'.");
 
   /**
-   * 16.12.2 Const: It is a compile-time error if evaluation of a constant
-   * object results in an uncaught exception being thrown.
-   */
-  static const CheckedModeCompileTimeErrorCode CONST_EVAL_THROWS_EXCEPTION =
-      const CheckedModeCompileTimeErrorCode('CONST_EVAL_THROWS_EXCEPTION',
-          "Evaluation of this constant expression throws an exception.");
-
-  /**
    * 7.6.1 Generative Constructors: In checked mode, it is a dynamic type error
    * if o is not <b>null</b> and the interface of the class of <i>o</i> is not a
    * subtype of the static type of the field <i>v</i>.
@@ -87,6 +79,10 @@
    * the type of the named parameter <i>q</i> of <i>f</i>. It is a static
    * warning if <i>T<sub>j</sub></i> may not be assigned to <i>S<sub>j</sub>,
    * 1 &lt;= j &lt;= m</i>.
+   *
+   * Parameters:
+   * 0: the actual type of the list element
+   * 1: the expected type of the list element
    */
   static const CheckedModeCompileTimeErrorCode
       LIST_ELEMENT_TYPE_NOT_ASSIGNABLE = const CheckedModeCompileTimeErrorCode(
@@ -134,6 +130,15 @@
           "'{1}'.");
 
   /**
+   * Parameters:
+   * 0: the actual type of the set element
+   * 1: the expected type of the set element
+   */
+  static const CheckedModeCompileTimeErrorCode SET_ELEMENT_TYPE_NOT_ASSIGNABLE =
+      const CheckedModeCompileTimeErrorCode('SET_ELEMENT_TYPE_NOT_ASSIGNABLE',
+          "The element type '{0}' can't be assigned to the set type '{1}'.");
+
+  /**
    * 16.12.2 Const: It is a compile-time error if evaluation of a constant
    * object results in an uncaught exception being thrown.
    */
@@ -659,6 +664,18 @@
           correction: "Try adding an initialization to the declaration.");
 
   /**
+   * Parameters:
+   * 0: the type of the element
+   */
+  static const CompileTimeErrorCode CONST_SET_ELEMENT_TYPE_IMPLEMENTS_EQUALS =
+      const CompileTimeErrorCode(
+          'CONST_SET_ELEMENT_TYPE_IMPLEMENTS_EQUALS',
+          "The constant set element type '{0}' can't override "
+          "the == operator.",
+          correction: "Try using a different value for the element, or "
+              "removing the keyword 'const' from the set.");
+
+  /**
    * 16.12.2 Const: An expression of one of the forms !e, e1 && e2 or e1 || e2,
    * where e, e1 and e2 are constant expressions that evaluate to a boolean
    * value.
@@ -670,6 +687,17 @@
           "'bool'.");
 
   /**
+   * 16.12.2 Const: An expression of one of the forms !e, e1 && e2 or e1 || e2,
+   * where e, e1 and e2 are constant expressions that evaluate to a boolean
+   * value.
+   */
+  static const CompileTimeErrorCode CONST_EVAL_TYPE_BOOL_INT =
+      const CompileTimeErrorCode(
+          'CONST_EVAL_TYPE_BOOL_INT',
+          "In constant expressions, operands of this operator must be of type "
+          "'bool' or 'int'.");
+
+  /**
    * 16.12.2 Const: An expression of one of the forms e1 == e2 or e1 != e2 where
    * e1 and e2 are constant expressions that evaluate to a numeric, string or
    * boolean value or to null.
@@ -703,6 +731,12 @@
           "In constant expressions, operands of this operator must be of type "
           "'num'.");
 
+  static const CompileTimeErrorCode CONST_EVAL_TYPE_TYPE =
+      const CompileTimeErrorCode(
+          'CONST_EVAL_TYPE_TYPE',
+          "In constant expressions, operands of this operator must be of type "
+          "'Type'.");
+
   /**
    * 16.12.2 Const: It is a compile-time error if evaluation of a constant
    * object results in an uncaught exception being thrown.
@@ -1587,6 +1621,14 @@
           correction:
               "Try replacing the type parameter with a different type.");
 
+  static const CompileTimeErrorCode INVALID_TYPE_ARGUMENT_IN_CONST_SET =
+      const CompileTimeErrorCode(
+          'INVALID_TYPE_ARGUMENT_IN_CONST_SET',
+          "Constant set literals can't include a type parameter as a type "
+          "argument, such as '{0}'.",
+          correction:
+              "Try replacing the type parameter with a different type.");
+
   /**
    * The 'covariant' keyword was found in an inappropriate location.
    */
@@ -1677,6 +1719,16 @@
           "expression.",
           correction: "Try adding the keyword 'const' before the literal.");
 
+  /**
+   * 12.1 Constants: A constant expression is ... a constant set literal.
+   */
+  static const CompileTimeErrorCode MISSING_CONST_IN_SET_LITERAL =
+      const CompileTimeErrorCode(
+          'MISSING_CONST_IN_SET_LITERAL',
+          "Set literals must be prefixed with 'const' when used as a constant "
+          "expression.",
+          correction: "Try adding the keyword 'const' before the literal.");
+
   static const CompileTimeErrorCode MISSING_DART_LIBRARY =
       const CompileTimeErrorCode(
           'MISSING_DART_LIBRARY', "Required library '{0}' is missing.",
@@ -1714,7 +1766,8 @@
   static const CompileTimeErrorCode
       MIXIN_APPLICATION_NOT_IMPLEMENTED_INTERFACE = const CompileTimeErrorCode(
           'MIXIN_APPLICATION_NOT_IMPLEMENTED_INTERFACE',
-          "The class doesn't implement the required class '{0}'.");
+          "The class doesn't implement the required class '{0}'.",
+          correction: "Try extending the class '{0}'.");
 
   /**
    * It's a compile-time error to apply a mixin containing super-invocations to
@@ -1967,8 +2020,8 @@
   static const CompileTimeErrorCode NON_CONST_MAP_AS_EXPRESSION_STATEMENT =
       const CompileTimeErrorCode(
           'NON_CONST_MAP_AS_EXPRESSION_STATEMENT',
-          "A non-constant map literal without type arguments can't be used as "
-          "an expression statement.");
+          "A non-constant map or set literal without type arguments can't be "
+          "used as an expression statement.");
 
   /**
    * 13.9 Switch: Given a switch statement of the form <i>switch (e) {
@@ -2041,7 +2094,8 @@
   static const CompileTimeErrorCode NON_CONSTANT_LIST_ELEMENT =
       const CompileTimeErrorCode('NON_CONSTANT_LIST_ELEMENT',
           "The values in a const list literal must be constants.",
-          correction: "Try removing the keyword 'const' from the map literal.");
+          correction:
+              "Try removing the keyword 'const' from the list literal.");
 
   /**
    * 12.6 Lists: It is a compile time error if an element of a constant list
@@ -2118,6 +2172,19 @@
       const CompileTimeErrorCode('NON_CONSTANT_ANNOTATION_CONSTRUCTOR',
           "Annotation creation can only call a const constructor.");
 
+  static const CompileTimeErrorCode NON_CONSTANT_SET_ELEMENT =
+      const CompileTimeErrorCode('NON_CONSTANT_SET_ELEMENT',
+          "The values in a const set literal must be constants.",
+          correction: "Try removing the keyword 'const' from the set literal.");
+
+  static const CompileTimeErrorCode
+      NON_CONSTANT_SET_ELEMENT_FROM_DEFERRED_LIBRARY =
+      const CompileTimeErrorCode(
+          'NON_CONSTANT_SET_ELEMENT_FROM_DEFERRED_LIBRARY',
+          "Constant values from a deferred library can't be used as values in "
+          "a 'const' set.",
+          correction: "Try removing the keyword 'const' from the set literal.");
+
   /**
    * 7.6.3 Constant Constructors: Any expression that appears within the
    * initializer list of a constant constructor must be a potentially constant
@@ -2251,9 +2318,9 @@
   static const CompileTimeErrorCode PRIVATE_COLLISION_IN_MIXIN_APPLICATION =
       const CompileTimeErrorCode(
           'PRIVATE_COLLISION_IN_MIXIN_APPLICATION',
-          "The private name {0}, defined by {1}, conflicts with the same name "
-          "defined by {2}.",
-          correction: "Try removing {1} from the 'with' clause.");
+          "The private name '{0}', defined by '{1}', "
+          "conflicts with the same name defined by '{2}'.",
+          correction: "Try removing '{1}' from the 'with' clause.");
 
   /**
    * 6.2.2 Optional Formals: It is a compile-time error if the name of a named
@@ -2555,13 +2622,13 @@
    * It is a compile-time error if a generic function type is used as an actual
    * type argument.
    */
-  static const CompileTimeErrorCode GENERIC_FUNCTION_CANNOT_BE_TYPE_ARGUMENT =
+  static const CompileTimeErrorCode
+      GENERIC_FUNCTION_TYPE_CANNOT_BE_TYPE_ARGUMENT =
       const CompileTimeErrorCode(
-          'GENERIC_FUNCTION_CANNOT_BE_TYPE_ARGUMENT',
-          "Generic function has type parameters '<{0}>', so it may not be used"
-          ' as a type argument',
-          correction: "Try removing the type parameters '<{0}>', or using"
-              " 'dynamic' as the type argument here instead of a function.");
+          'GENERIC_FUNCTION_TYPE_CANNOT_BE_TYPE_ARGUMENT',
+          "A generic function type cannot be a type argument.",
+          correction: "Try removing type parameters from the generic function "
+              "type, or using 'dynamic' as the type argument here.");
 
   /**
    * 15.3.1 Typedef: Any self reference, either directly, or recursively via
@@ -2808,6 +2875,17 @@
           correction: "Try adjusting the number of type arguments.");
 
   /**
+   * Parameters:
+   * 0: the number of provided type arguments
+   */
+  static const StaticTypeWarningCode EXPECTED_ONE_SET_TYPE_ARGUMENTS =
+      const StaticTypeWarningCode(
+          'EXPECTED_ONE_SET_TYPE_ARGUMENTS',
+          "Set literals require exactly one type argument or none, "
+          "but {0} found.",
+          correction: "Try adjusting the number of type arguments.");
+
+  /**
    * 12.8 Maps: A fresh instance (7.6.1) <i>m</i>, of size <i>n</i>, whose class
    * implements the built-in class <i>Map&lt;K, V></i> is allocated.
    *
@@ -3145,22 +3223,6 @@
               "defining a method named '{0}'.");
 
   /**
-   * 12.15.1 Ordinary Invocation: Let <i>T</i> be the static type of <i>o</i>.
-   * It is a static type warning if <i>T</i> does not have an accessible
-   * instance member named <i>m</i>.
-   *
-   * Parameters:
-   * 0: the name of the method that is undefined
-   * 1: the resolved type name that the method lookup is happening on
-   */
-  static const StaticTypeWarningCode UNDEFINED_METHOD_WITH_CONSTRUCTOR =
-      const StaticTypeWarningCode('UNDEFINED_METHOD_WITH_CONSTRUCTOR',
-          "The method '{0}' isn't defined for the class '{1}', but a constructor with that name is defined.",
-          correction:
-              "Try adding 'new' or 'const' to invoke the constructor, or "
-              "correcting the name to the name of an existing method.");
-
-  /**
    * 12.18 Assignment: Evaluation of an assignment of the form
    * <i>e<sub>1</sub></i>[<i>e<sub>2</sub></i>] = <i>e<sub>3</sub></i> is
    * equivalent to the evaluation of the expression (a, i, e){a.[]=(i, e);
@@ -3931,6 +3993,10 @@
    * the type of the named parameter <i>q</i> of <i>f</i>. It is a static
    * warning if <i>T<sub>j</sub></i> may not be assigned to <i>S<sub>j</sub>, 1
    * &lt;= j &lt;= m</i>.
+   *
+   * Parameters:
+   * 0: the actual type of the list element
+   * 1: the expected type of the list element
    */
   static const StaticWarningCode LIST_ELEMENT_TYPE_NOT_ASSIGNABLE =
       const StaticWarningCode('LIST_ELEMENT_TYPE_NOT_ASSIGNABLE',
@@ -4380,6 +4446,15 @@
       correction: null);
 
   /**
+   * Parameters:
+   * 0: the actual type of the set element
+   * 1: the expected type of the set element
+   */
+  static const StaticWarningCode SET_ELEMENT_TYPE_NOT_ASSIGNABLE =
+      const StaticWarningCode('SET_ELEMENT_TYPE_NOT_ASSIGNABLE',
+          "The element type '{0}' can't be assigned to the set type '{1}'.");
+
+  /**
    * 12.16.3 Static Invocation: It is a static warning if <i>C</i> does not
    * declare a static method or getter <i>m</i>.
    *
@@ -4639,6 +4714,13 @@
       "type can be changed with an explicit generic type arguments or by "
       "changing the key and value types.");
 
+  static const StrongModeCode INVALID_CAST_LITERAL_SET = const StrongModeCode(
+      ErrorType.COMPILE_TIME_ERROR,
+      'INVALID_CAST_LITERAL_SET',
+      "The set literal type '{0}' isn't of expected type '{1}'. The set's "
+      "type can be changed with an explicit generic type argument or by "
+      "changing the element types.");
+
   static const StrongModeCode INVALID_CAST_FUNCTION_EXPR = const StrongModeCode(
       ErrorType.COMPILE_TIME_ERROR,
       'INVALID_CAST_FUNCTION_EXPR',
diff --git a/pkg/analyzer/lib/src/error/inheritance_override.dart b/pkg/analyzer/lib/src/error/inheritance_override.dart
index b74f141..d545ddc 100644
--- a/pkg/analyzer/lib/src/error/inheritance_override.dart
+++ b/pkg/analyzer/lib/src/error/inheritance_override.dart
@@ -1,11 +1,11 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
+import 'package:analyzer/error/error.dart';
 import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/inheritance_manager2.dart';
@@ -94,8 +94,12 @@
   final TypeName superclass;
   final WithClause withClause;
 
+  /// The set of unique supertypes of the current class.
+  /// It is used to decide when to add a new element to [allSuperinterfaces].
+  final Set<InterfaceType> allSupertypes = new Set<InterfaceType>();
+
   /// The list of all superinterfaces, collected so far.
-  final List<InterfaceType> allSuperinterfaces = [];
+  final List<Interface> allSuperinterfaces = [];
 
   _ClassVerifier({
     this.typeSystem,
@@ -122,8 +126,7 @@
 
     // Add all superinterfaces of the direct supertype.
     if (type.superclass != null) {
-      ClassElementImpl.collectAllSupertypes(
-          allSuperinterfaces, type.superclass, null);
+      _addSuperinterfaces(type.superclass);
     }
 
     // Each mixin in `class C extends S with M0, M1, M2 {}` is equivalent to:
@@ -136,15 +139,14 @@
     var mixinNodes = withClause?.mixinTypes;
     var mixinTypes = type.mixins;
     for (var i = 0; i < mixinTypes.length; i++) {
-      _checkDeclaredMembers(mixinNodes[i], mixinTypes[i]);
-      ClassElementImpl.collectAllSupertypes(
-          allSuperinterfaces, mixinTypes[i], null);
+      var mixinType = mixinTypes[i];
+      _checkDeclaredMembers(mixinNodes[i], mixinType);
+      _addSuperinterfaces(mixinType);
     }
 
     // Add all superinterfaces of the direct class interfaces.
     for (var interface in type.interfaces) {
-      ClassElementImpl.collectAllSupertypes(
-          allSuperinterfaces, interface, null);
+      _addSuperinterfaces(interface);
     }
 
     // Check the members if the class itself, against all the previously
@@ -163,24 +165,24 @@
     }
 
     // Compute the interface of the class.
-    var interfaceMembers = inheritance.getInterface(type);
+    var interface = inheritance.getInterface(type);
 
     // Report conflicts between direct superinterfaces of the class.
-    for (var conflict in interfaceMembers.conflicts) {
+    for (var conflict in interface.conflicts) {
       _reportInconsistentInheritance(classNameNode, conflict);
     }
 
-    _checkForMismatchedAccessorTypes(interfaceMembers);
+    _checkForMismatchedAccessorTypes(interface);
 
     if (!classElement.isAbstract) {
       List<FunctionType> inheritedAbstract = null;
 
-      for (var name in interfaceMembers.map.keys) {
+      for (var name in interface.map.keys) {
         if (!name.isAccessibleFor(libraryUri)) {
           continue;
         }
 
-        var interfaceType = interfaceMembers.map[name];
+        var interfaceType = interface.map[name];
         var concreteType = inheritance.getMember(type, name, concrete: true);
 
         // No concrete implementation of the name.
@@ -226,6 +228,18 @@
     }
   }
 
+  void _addSuperinterfaces(InterfaceType startingType) {
+    var supertypes = <InterfaceType>[];
+    ClassElementImpl.collectAllSupertypes(supertypes, startingType, null);
+    for (int i = 0; i < supertypes.length; i++) {
+      var supertype = supertypes[i];
+      if (allSupertypes.add(supertype)) {
+        var interface = inheritance.getInterface(supertype);
+        allSuperinterfaces.add(interface);
+      }
+    }
+  }
+
   /// Check that the given [member] is a valid override of the corresponding
   /// instance members in each of [allSuperinterfaces].  The [libraryUri] is
   /// the URI of the library containing the [member].
@@ -238,8 +252,8 @@
     if (member.isStatic) return;
 
     var name = new Name(libraryUri, member.name);
-    for (var superType in allSuperinterfaces) {
-      var superMemberType = inheritance.getInterface(superType).map[name];
+    for (var superInterface in allSuperinterfaces) {
+      var superMemberType = superInterface.declared[name];
       if (superMemberType != null) {
         // The case when members have different kinds is reported in verifier.
         // TODO(scheglov) Do it here?
@@ -352,7 +366,7 @@
       if (getter.element.kind == ElementKind.GETTER) {
         // TODO(scheglov) We should separate getters and setters.
         var setter = interface.map[new Name(libraryUri, '${name.name}=')];
-        if (setter != null) {
+        if (setter != null && setter.parameters.length == 1) {
           var getterType = getter.returnType;
           var setterType = setter.parameters[0].type;
           if (!typeSystem.isAssignableTo(getterType, setterType)) {
diff --git a/pkg/analyzer/lib/src/fasta/ast_builder.dart b/pkg/analyzer/lib/src/fasta/ast_builder.dart
index e816bf5..bb0a1296 100644
--- a/pkg/analyzer/lib/src/fasta/ast_builder.dart
+++ b/pkg/analyzer/lib/src/fasta/ast_builder.dart
@@ -890,6 +890,29 @@
     push(ast.nullLiteral(token));
   }
 
+  @override
+  void handleEmptyLiteralSetOrMap(
+      Token leftBrace, Token constKeyword, Token rightBrace) {
+    // TODO(danrubel): From a type resolution standpoint, this could be either
+    // a set literal or a map literal depending upon the context
+    // in which this expression occurs.
+    // For now, generate a map literal.
+    handleLiteralMap(0, leftBrace, constKeyword, rightBrace);
+  }
+
+  void handleLiteralSet(
+      int count, Token leftBracket, Token constKeyword, Token rightBracket) {
+    assert(optional('{', leftBracket));
+    assert(optionalOrNull('const', constKeyword));
+    assert(optional('}', rightBracket));
+    debugEvent("LiteralSet");
+
+    List<Expression> entries = popTypedList(count) ?? <Expression>[];
+    TypeArgumentList typeArguments = pop();
+    push(ast.setLiteral(
+        constKeyword, typeArguments, leftBracket, entries, rightBracket));
+  }
+
   void handleLiteralMap(
       int count, Token leftBracket, Token constKeyword, Token rightBracket) {
     assert(optional('{', leftBracket));
diff --git a/pkg/analyzer/lib/src/fasta/error_converter.dart b/pkg/analyzer/lib/src/fasta/error_converter.dart
index 8464578..b99d26f 100644
--- a/pkg/analyzer/lib/src/fasta/error_converter.dart
+++ b/pkg/analyzer/lib/src/fasta/error_converter.dart
@@ -1,10 +1,12 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/dart/ast/token.dart' show Token;
+import 'package:analyzer/error/error.dart';
+import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/src/dart/error/syntactic_errors.dart';
+import 'package:analyzer/src/error/codes.dart';
 import 'package:front_end/src/fasta/messages.dart' show Code, Message;
 
 /// An error reporter that knows how to convert a Fasta error into an analyzer
diff --git a/pkg/analyzer/lib/src/generated/element_resolver.dart b/pkg/analyzer/lib/src/generated/element_resolver.dart
index b759dd0..53f150f 100644
--- a/pkg/analyzer/lib/src/generated/element_resolver.dart
+++ b/pkg/analyzer/lib/src/generated/element_resolver.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -19,6 +19,7 @@
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/inheritance_manager2.dart';
 import 'package:analyzer/src/dart/element/type.dart';
+import 'package:analyzer/src/dart/resolver/method_invocation_resolver.dart';
 import 'package:analyzer/src/error/codes.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/resolver.dart';
@@ -82,7 +83,7 @@
  * combinators that are not defined in the imported library (which is not an
  * error).
  */
-class ElementResolver extends SimpleAstVisitor<Object> {
+class ElementResolver extends SimpleAstVisitor<void> {
   /**
    * The manager for the inheritance mappings.
    */
@@ -104,28 +105,25 @@
   DartType _dynamicType;
 
   /**
-   * The type representing the type 'type'.
+   * The type representing the type 'Type'.
    */
   InterfaceType _typeType;
 
-  /**
-   * The object keeping track of which elements have had their types promoted.
-   */
-  TypePromotionManager _promoteManager;
-
   /// Whether constant evaluation errors should be reported during resolution.
   final bool reportConstEvaluationErrors;
 
+  final MethodInvocationResolver _methodInvocationResolver;
+
   /**
    * Initialize a newly created visitor to work for the given [_resolver] to
    * resolve the nodes in a compilation unit.
    */
   ElementResolver(this._resolver, {this.reportConstEvaluationErrors: true})
       : _inheritance = _resolver.inheritance,
-        _definingLibrary = _resolver.definingLibrary {
+        _definingLibrary = _resolver.definingLibrary,
+        _methodInvocationResolver = new MethodInvocationResolver(_resolver) {
     _dynamicType = _resolver.typeProvider.dynamicType;
     _typeType = _resolver.typeProvider.typeType;
-    _promoteManager = _resolver.promoteManager;
   }
 
   /**
@@ -141,7 +139,7 @@
   }
 
   @override
-  Object visitAssignmentExpression(AssignmentExpression node) {
+  void visitAssignmentExpression(AssignmentExpression node) {
     Token operator = node.operator;
     TokenType operatorType = operator.type;
     Expression leftHandSide = node.leftHandSide;
@@ -154,7 +152,7 @@
         staticType.isVoid) {
       _recordUndefinedToken(
           null, StaticWarningCode.USE_OF_VOID_RESULT, operator, []);
-      return null;
+      return;
     }
 
     if (operatorType != TokenType.AMPERSAND_AMPERSAND_EQ &&
@@ -176,40 +174,35 @@
         }
       }
     }
-    return null;
   }
 
   @override
-  Object visitBinaryExpression(BinaryExpression node) {
+  void visitBinaryExpression(BinaryExpression node) {
     Token operator = node.operator;
     if (operator.isUserDefinableOperator) {
       _resolveBinaryExpression(node, operator.lexeme);
     } else if (operator.type == TokenType.BANG_EQ) {
       _resolveBinaryExpression(node, TokenType.EQ_EQ.lexeme);
     }
-    return null;
   }
 
   @override
-  Object visitBreakStatement(BreakStatement node) {
+  void visitBreakStatement(BreakStatement node) {
     node.target = _lookupBreakOrContinueTarget(node, node.label, false);
-    return null;
   }
 
   @override
-  Object visitClassDeclaration(ClassDeclaration node) {
+  void visitClassDeclaration(ClassDeclaration node) {
     resolveMetadata(node);
-    return null;
   }
 
   @override
-  Object visitClassTypeAlias(ClassTypeAlias node) {
+  void visitClassTypeAlias(ClassTypeAlias node) {
     resolveMetadata(node);
-    return null;
   }
 
   @override
-  Object visitCommentReference(CommentReference node) {
+  void visitCommentReference(CommentReference node) {
     Identifier identifier = node.identifier;
     if (identifier is SimpleIdentifier) {
       Element element = _resolveSimpleIdentifier(identifier);
@@ -249,7 +242,7 @@
           // TODO(brianwilkerson) Report this error?
           element = _resolver.nameScope.lookup(identifier, _definingLibrary);
           name.staticElement = element;
-          return null;
+          return;
         }
         LibraryElement library = element.library;
         if (library == null) {
@@ -293,11 +286,10 @@
         }
       }
     }
-    return null;
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     super.visitConstructorDeclaration(node);
     ConstructorElement element = node.declaredElement;
     if (element is ConstructorElementImpl) {
@@ -317,20 +309,18 @@
       }
       resolveMetadata(node);
     }
-    return null;
   }
 
   @override
-  Object visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
+  void visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
     SimpleIdentifier fieldName = node.fieldName;
     ClassElement enclosingClass = _resolver.enclosingClass;
     FieldElement fieldElement = enclosingClass.getField(fieldName.name);
     fieldName.staticElement = fieldElement;
-    return null;
   }
 
   @override
-  Object visitConstructorName(ConstructorName node) {
+  void visitConstructorName(ConstructorName node) {
     DartType type = node.type.type;
     if (type != null && type.isDynamic) {
       // Nothing to do.
@@ -358,29 +348,25 @@
 //        // This is part of a redirecting factory constructor; not sure which error code to use
 //      }
     }
-    return null;
   }
 
   @override
-  Object visitContinueStatement(ContinueStatement node) {
+  void visitContinueStatement(ContinueStatement node) {
     node.target = _lookupBreakOrContinueTarget(node, node.label, true);
-    return null;
   }
 
   @override
-  Object visitDeclaredIdentifier(DeclaredIdentifier node) {
+  void visitDeclaredIdentifier(DeclaredIdentifier node) {
     resolveMetadata(node);
-    return null;
   }
 
   @override
-  Object visitEnumDeclaration(EnumDeclaration node) {
+  void visitEnumDeclaration(EnumDeclaration node) {
     resolveMetadata(node);
-    return null;
   }
 
   @override
-  Object visitExportDirective(ExportDirective node) {
+  void visitExportDirective(ExportDirective node) {
     ExportElement exportElement = node.element;
     if (exportElement != null) {
       // The element is null when the URI is invalid
@@ -389,23 +375,21 @@
       _resolveCombinators(exportElement.exportedLibrary, node.combinators);
       resolveMetadata(node);
     }
-    return null;
   }
 
   @override
-  Object visitFieldFormalParameter(FieldFormalParameter node) {
+  void visitFieldFormalParameter(FieldFormalParameter node) {
     _resolveMetadataForParameter(node);
-    return super.visitFieldFormalParameter(node);
+    super.visitFieldFormalParameter(node);
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     resolveMetadata(node);
-    return null;
   }
 
   @override
-  Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
+  void visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     Expression function = node.function;
     DartType staticInvokeType = _instantiateGenericMethod(
         function.staticType, node.typeArguments, node);
@@ -417,23 +401,20 @@
     if (parameters != null) {
       node.argumentList.correspondingStaticParameters = parameters;
     }
-    return null;
   }
 
   @override
-  Object visitFunctionTypeAlias(FunctionTypeAlias node) {
+  void visitFunctionTypeAlias(FunctionTypeAlias node) {
     resolveMetadata(node);
-    return null;
   }
 
   @override
-  Object visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
+  void visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
     _resolveMetadataForParameter(node);
-    return null;
   }
 
   @override
-  Object visitImportDirective(ImportDirective node) {
+  void visitImportDirective(ImportDirective node) {
     SimpleIdentifier prefixNode = node.prefix;
     if (prefixNode != null) {
       String prefixName = prefixNode.name;
@@ -456,11 +437,10 @@
       }
       resolveMetadata(node);
     }
-    return null;
   }
 
   @override
-  Object visitIndexExpression(IndexExpression node) {
+  void visitIndexExpression(IndexExpression node) {
     Expression target = node.realTarget;
     DartType staticType = _getStaticType(target);
     String getterMethodName = TokenType.INDEX.lexeme;
@@ -475,7 +455,7 @@
       node.staticElement = setterStaticMethod;
       // generate undefined method warning
       _checkForUndefinedIndexOperator(
-          node, target, getterMethodName, setterStaticMethod, staticType);
+          node, target, setterMethodName, setterStaticMethod, staticType);
       // lookup getter method
       MethodElement getterStaticMethod =
           _lookUpMethod(target, staticType, getterMethodName);
@@ -505,11 +485,10 @@
       _checkForUndefinedIndexOperator(
           node, target, setterMethodName, staticMethod, staticType);
     }
-    return null;
   }
 
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     ConstructorElement invokedConstructor = node.constructorName.staticElement;
     node.staticElement = invokedConstructor;
     ArgumentList argumentList = node.argumentList;
@@ -520,246 +499,35 @@
     if (parameters != null) {
       argumentList.correspondingStaticParameters = parameters;
     }
-    return null;
   }
 
   @override
-  Object visitLibraryDirective(LibraryDirective node) {
+  void visitLibraryDirective(LibraryDirective node) {
     resolveMetadata(node);
-    return null;
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     resolveMetadata(node);
-    return null;
   }
 
   @override
-  Object visitMethodInvocation(MethodInvocation node) {
-    SimpleIdentifier methodName = node.methodName;
-    //
-    // Synthetic identifiers have been already reported during parsing.
-    //
-    if (methodName.isSynthetic) {
-      return null;
-    }
-    //
-    // We have a method invocation of one of two forms: 'e.m(a1, ..., an)' or
-    // 'm(a1, ..., an)'. The first step is to figure out which executable is
-    // being invoked, using both the static and the propagated type information.
-    //
-    Expression target = node.realTarget;
-    if (target is SuperExpression && !_isSuperInValidContext(target)) {
-      return null;
-    }
-    Element staticElement;
-    if (target == null) {
-      staticElement = _resolveInvokedElement(methodName);
-    } else if (methodName.name == FunctionElement.LOAD_LIBRARY_NAME &&
-        _isDeferredPrefix(target)) {
-      if (node.operator.type == TokenType.QUESTION_PERIOD) {
-        _resolver.errorReporter.reportErrorForNode(
-            CompileTimeErrorCode.PREFIX_IDENTIFIER_NOT_FOLLOWED_BY_DOT,
-            target,
-            [(target as SimpleIdentifier).name]);
-      }
-      LibraryElement importedLibrary = _getImportedLibrary(target);
-      FunctionElement loadLibraryFunction =
-          importedLibrary?.loadLibraryFunction;
-      methodName.staticElement = loadLibraryFunction;
-      node.staticInvokeType = loadLibraryFunction?.type;
-      return null;
-    } else {
-      //
-      // If this method invocation is of the form 'C.m' where 'C' is a class,
-      // then we don't call resolveInvokedElement(...) which walks up the class
-      // hierarchy, instead we just look for the member in the type only.  This
-      // does not apply to conditional method invocation (i.e. 'C?.m(...)').
-      //
-      bool isConditional = node.operator.type == TokenType.QUESTION_PERIOD;
-      ClassElement typeReference = getTypeReference(target);
-
-      if (typeReference != null) {
-        if (node.isCascaded) {
-          typeReference = _typeType.element;
-        }
-        staticElement = _resolveElement(typeReference, methodName);
-      } else {
-        DartType staticType = _getStaticTypeOrFunctionType(target);
-
-        if (staticType is FunctionType &&
-            methodName.name == FunctionElement.CALL_METHOD_NAME) {
-          if (target is SimpleIdentifier) {
-            methodName.staticElement = target.staticElement;
-          }
-          methodName.staticType = target.staticType;
-          node.staticType = staticType;
-          node.staticInvokeType = staticType;
-          node.argumentList.correspondingStaticParameters =
-              _computeCorrespondingParameters(node.argumentList, staticType);
-          return null;
-        }
-
-        if (target is SuperExpression) {
-          if (staticType is InterfaceTypeImpl) {
-            staticElement = staticType.lookUpInheritedMember(
-                methodName.name, _definingLibrary,
-                concrete: true, forSuperInvocation: true);
-            // We were not able to find the concrete dispatch target.
-            // But we would like to give the user at least some resolution.
-            // So, we retry without the "concrete" requirement.
-            if (staticElement == null) {
-              staticElement = staticType.lookUpInheritedMember(
-                  methodName.name, _definingLibrary,
-                  concrete: false);
-              if (staticElement != null) {
-                _resolver.errorReporter.reportErrorForNode(
-                    CompileTimeErrorCode.ABSTRACT_SUPER_MEMBER_REFERENCE,
-                    methodName,
-                    [staticElement.kind.displayName, methodName.name]);
-              }
-            }
-          }
-        } else {
-          staticElement = _resolveInvokedElementWithTarget(
-              target, staticType, methodName, isConditional);
-        }
-      }
-    }
-
-    staticElement = _convertSetterToGetter(staticElement);
-
-    //
-    // Given the elements, determine the type of the function we are invoking
-    //
-    DartType staticType = _getInvokeType(staticElement);
-    methodName.staticType = staticType;
-
-    //
-    // Instantiate generic function or method if needed.
-    //
-    DartType staticInvokeType = _instantiateGenericMethod(
-        staticType, node.typeArguments, node.methodName);
-
-    //
-    // Record the results.
-    //
-    methodName.staticElement = staticElement;
-    node.staticInvokeType = staticInvokeType;
-    ArgumentList argumentList = node.argumentList;
-    if (staticInvokeType != null) {
-      List<ParameterElement> parameters =
-          _computeCorrespondingParameters(argumentList, staticInvokeType);
-      argumentList.correspondingStaticParameters = parameters;
-    }
-    //
-    // Then check for error conditions.
-    //
-    ErrorCode errorCode = _checkForInvocationError(
-        target, true, staticElement, staticType, methodName.name);
-    if (errorCode != null &&
-        target is SimpleIdentifier &&
-        target.staticElement is PrefixElement) {
-      Identifier functionName =
-          new PrefixedIdentifierImpl.temp(target, methodName);
-      if (_resolver.nameScope.shouldIgnoreUndefined(functionName)) {
-        return null;
-      }
-    }
-    if (errorCode == null) {
-      return null;
-    }
-
-    if (identical(
-            errorCode, StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION) ||
-        identical(errorCode,
-            CompileTimeErrorCode.PREFIX_IDENTIFIER_NOT_FOLLOWED_BY_DOT) ||
-        identical(errorCode, StaticTypeWarningCode.UNDEFINED_FUNCTION)) {
-      if (!_resolver.nameScope.shouldIgnoreUndefined(methodName)) {
-        _resolver.errorReporter
-            .reportErrorForNode(errorCode, methodName, [methodName.name]);
-      }
-    } else if (identical(errorCode, StaticTypeWarningCode.UNDEFINED_METHOD)) {
-      String targetTypeName;
-      if (target == null) {
-        ClassElement enclosingClass = _resolver.enclosingClass;
-        targetTypeName = enclosingClass.displayName;
-        ErrorCode proxyErrorCode = StaticTypeWarningCode.UNDEFINED_METHOD;
-        _recordUndefinedNode(_resolver.enclosingClass, proxyErrorCode,
-            methodName, [methodName.name, targetTypeName]);
-      } else {
-        // ignore Function "call"
-        // (if we are about to create a hint using type propagation,
-        // then we can use type propagation here as well)
-        DartType targetType = null;
-        targetType = _getStaticType(target);
-        if (targetType != null &&
-            targetType.isDartCoreFunction &&
-            methodName.name == FunctionElement.CALL_METHOD_NAME) {
-          return null;
-        }
-        if (!node.isCascaded) {
-          ClassElement typeReference = getTypeReference(target);
-          if (typeReference != null) {
-            ConstructorElement constructor =
-                typeReference.getNamedConstructor(methodName.name);
-            if (constructor != null) {
-              _recordUndefinedNode(
-                  typeReference,
-                  StaticTypeWarningCode.UNDEFINED_METHOD_WITH_CONSTRUCTOR,
-                  methodName,
-                  [methodName.name, typeReference.name]);
-              return null;
-            }
-          }
-        }
-
-        targetTypeName = targetType?.displayName;
-        ErrorCode proxyErrorCode = StaticTypeWarningCode.UNDEFINED_METHOD;
-
-        _recordUndefinedNode(targetType.element, proxyErrorCode, methodName,
-            [methodName.name, targetTypeName]);
-      }
-    } else if (identical(
-        errorCode, StaticTypeWarningCode.UNDEFINED_SUPER_METHOD)) {
-      // Generate the type name.
-      // The error code will never be generated via type propagation
-      DartType getSuperType(DartType type) {
-        if (type is InterfaceType) {
-          InterfaceType superclass = type.superclass;
-          if (superclass != null) return superclass;
-        }
-        return type;
-      }
-
-      DartType targetType = getSuperType(_getStaticType(target));
-      String targetTypeName = targetType?.name;
-      _resolver.errorReporter.reportErrorForNode(
-          StaticTypeWarningCode.UNDEFINED_SUPER_METHOD,
-          methodName,
-          [methodName.name, targetTypeName]);
-    } else if (identical(errorCode, StaticWarningCode.USE_OF_VOID_RESULT)) {
-      _resolver.errorReporter.reportErrorForNode(
-          StaticWarningCode.USE_OF_VOID_RESULT, target ?? methodName, []);
-    }
-    return null;
+  void visitMethodInvocation(MethodInvocation node) {
+    _methodInvocationResolver.resolve(node);
   }
 
   @override
-  Object visitMixinDeclaration(MixinDeclaration node) {
+  void visitMixinDeclaration(MixinDeclaration node) {
     resolveMetadata(node);
-    return null;
   }
 
   @override
-  Object visitPartDirective(PartDirective node) {
+  void visitPartDirective(PartDirective node) {
     resolveMetadata(node);
-    return null;
   }
 
   @override
-  Object visitPostfixExpression(PostfixExpression node) {
+  void visitPostfixExpression(PostfixExpression node) {
     Expression operand = node.operand;
     String methodName = _getPostfixOperator(node);
     DartType staticType = _getStaticType(operand);
@@ -780,11 +548,10 @@
             [methodName, staticType.displayName]);
       }
     }
-    return null;
   }
 
   @override
-  Object visitPrefixedIdentifier(PrefixedIdentifier node) {
+  void visitPrefixedIdentifier(PrefixedIdentifier node) {
     SimpleIdentifier prefix = node.prefix;
     SimpleIdentifier identifier = node.identifier;
     //
@@ -794,7 +561,7 @@
         _isDeferredPrefix(prefix)) {
       LibraryElement importedLibrary = _getImportedLibrary(prefix);
       identifier.staticElement = importedLibrary?.loadLibraryFunction;
-      return null;
+      return;
     }
     //
     // Check to see whether the prefix is really a prefix.
@@ -810,7 +577,7 @@
         element = _resolver.nameScope.lookup(setterName, _definingLibrary);
       }
       if (element == null && _resolver.nameScope.shouldIgnoreUndefined(node)) {
-        return null;
+        return;
       }
       if (element == null) {
         if (identifier.inSetterContext()) {
@@ -818,7 +585,7 @@
               StaticTypeWarningCode.UNDEFINED_SETTER,
               identifier,
               [identifier.name, prefixElement.name]);
-          return null;
+          return;
         }
         AstNode parent = node.parent;
         if (parent is Annotation) {
@@ -832,7 +599,7 @@
               identifier,
               [identifier.name, prefixElement.name]);
         }
-        return null;
+        return;
       }
       Element accessor = element;
       if (accessor is PropertyAccessorElement && identifier.inSetterContext()) {
@@ -852,7 +619,7 @@
       if (parent is Annotation) {
         _resolveAnnotationElement(parent);
       }
-      return null;
+      return;
     }
     // May be annotation, resolve invocation of "const" constructor.
     AstNode parent = node.parent;
@@ -864,11 +631,10 @@
     // identifier and this is really equivalent to a property access node.
     //
     _resolvePropertyAccess(prefix, identifier, false);
-    return null;
   }
 
   @override
-  Object visitPrefixExpression(PrefixExpression node) {
+  void visitPrefixExpression(PrefixExpression node) {
     Token operator = node.operator;
     TokenType operatorType = operator.type;
     if (operatorType.isUserDefinableOperator ||
@@ -896,27 +662,25 @@
         }
       }
     }
-    return null;
   }
 
   @override
-  Object visitPropertyAccess(PropertyAccess node) {
+  void visitPropertyAccess(PropertyAccess node) {
     Expression target = node.realTarget;
     if (target is SuperExpression && !_isSuperInValidContext(target)) {
-      return null;
+      return;
     }
     SimpleIdentifier propertyName = node.propertyName;
     _resolvePropertyAccess(target, propertyName, node.isCascaded);
-    return null;
   }
 
   @override
-  Object visitRedirectingConstructorInvocation(
+  void visitRedirectingConstructorInvocation(
       RedirectingConstructorInvocation node) {
     ClassElement enclosingClass = _resolver.enclosingClass;
     if (enclosingClass == null) {
       // TODO(brianwilkerson) Report this error.
-      return null;
+      return;
     }
     SimpleIdentifier name = node.constructorName;
     ConstructorElement element;
@@ -928,7 +692,7 @@
     if (element == null) {
       // TODO(brianwilkerson) Report this error and decide what element to
       // associate with the node.
-      return null;
+      return;
     }
     if (name != null) {
       name.staticElement = element;
@@ -940,41 +704,39 @@
     if (parameters != null) {
       argumentList.correspondingStaticParameters = parameters;
     }
-    return null;
   }
 
   @override
-  Object visitSimpleFormalParameter(SimpleFormalParameter node) {
+  void visitSimpleFormalParameter(SimpleFormalParameter node) {
     _resolveMetadataForParameter(node);
-    return null;
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     //
     // Synthetic identifiers have been already reported during parsing.
     //
     if (node.isSynthetic) {
-      return null;
+      return;
     }
     //
     // Ignore nodes that should have been resolved before getting here.
     //
     if (node.inDeclarationContext()) {
-      return null;
+      return;
     }
     if (node.staticElement is LocalVariableElement ||
         node.staticElement is ParameterElement) {
-      return null;
+      return;
     }
     AstNode parent = node.parent;
     if (parent is FieldFormalParameter) {
-      return null;
+      return;
     } else if (parent is ConstructorFieldInitializer &&
         parent.fieldName == node) {
-      return null;
+      return;
     } else if (parent is Annotation && parent.constructorName == node) {
-      return null;
+      return;
     }
     //
     // The name dynamic denotes a Type object even though dynamic is not a
@@ -983,7 +745,7 @@
     if (node.name == _dynamicType.name) {
       node.staticElement = _dynamicType.element;
       node.staticType = _typeType;
-      return null;
+      return;
     }
     //
     // Otherwise, the node should be resolved.
@@ -1039,21 +801,20 @@
     if (parent is Annotation) {
       _resolveAnnotationElement(parent);
     }
-    return null;
   }
 
   @override
-  Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
+  void visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     ClassElementImpl enclosingClass =
         AbstractClassElementImpl.getImpl(_resolver.enclosingClass);
     if (enclosingClass == null) {
       // TODO(brianwilkerson) Report this error.
-      return null;
+      return;
     }
     InterfaceType superType = enclosingClass.supertype;
     if (superType == null) {
       // TODO(brianwilkerson) Report this error.
-      return null;
+      return;
     }
     SimpleIdentifier name = node.constructorName;
     String superName = name?.name;
@@ -1071,7 +832,7 @@
             node,
             [superType.displayName]);
       }
-      return null;
+      return;
     } else {
       if (element.isFactory) {
         _resolver.errorReporter.reportErrorForNode(
@@ -1085,11 +846,11 @@
     // TODO(brianwilkerson) Defer this check until we know there's an error (by
     // in-lining _resolveArgumentsToFunction below).
     ClassDeclaration declaration =
-        node.getAncestor((AstNode node) => node is ClassDeclaration);
+        node.thisOrAncestorOfType<ClassDeclaration>();
     Identifier superclassName = declaration.extendsClause?.superclass?.name;
     if (superclassName != null &&
         _resolver.nameScope.shouldIgnoreUndefined(superclassName)) {
-      return null;
+      return;
     }
     ArgumentList argumentList = node.argumentList;
     List<ParameterElement> parameters = _resolveArgumentsToFunction(
@@ -1097,121 +858,25 @@
     if (parameters != null) {
       argumentList.correspondingStaticParameters = parameters;
     }
-    return null;
   }
 
   @override
-  Object visitSuperExpression(SuperExpression node) {
+  void visitSuperExpression(SuperExpression node) {
     if (!_isSuperInValidContext(node)) {
       _resolver.errorReporter.reportErrorForNode(
           CompileTimeErrorCode.SUPER_IN_INVALID_CONTEXT, node);
     }
-    return super.visitSuperExpression(node);
+    super.visitSuperExpression(node);
   }
 
   @override
-  Object visitTypeParameter(TypeParameter node) {
+  void visitTypeParameter(TypeParameter node) {
     resolveMetadata(node);
-    return null;
   }
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     resolveMetadata(node);
-    return null;
-  }
-
-  /**
-   * Given that we have found code to invoke the given [element], return the
-   * error code that should be reported, or `null` if no error should be
-   * reported. The [target] is the target of the invocation, or `null` if there
-   * was no target. The flag [useStaticContext] should be `true` if the
-   * invocation is in a static constant (does not have access to instance state).
-   */
-  ErrorCode _checkForInvocationError(Expression target, bool useStaticContext,
-      Element element, DartType type, String name) {
-    // Prefix is not declared, instead "prefix.id" are declared.
-    if (element is PrefixElement) {
-      return CompileTimeErrorCode.PREFIX_IDENTIFIER_NOT_FOLLOWED_BY_DOT;
-    } else if (element is PropertyAccessorElement) {
-      //
-      // This is really a function expression invocation.
-      //
-      // TODO(brianwilkerson) Consider the possibility of re-writing the AST.
-      FunctionType getterType = element.type;
-      if (getterType != null) {
-        DartType returnType = getterType.returnType;
-        return _getErrorCodeForExecuting(returnType);
-      }
-    } else if (element is ExecutableElement) {
-      return null;
-    } else if (element is MultiplyDefinedElement) {
-      // The error has already been reported
-      return null;
-    } else if (element == null && target is SuperExpression) {
-      // TODO(jwren) We should split the UNDEFINED_METHOD into two error codes,
-      // this one, and a code that describes the situation where the method was
-      // found, but it was not accessible from the current library.
-      return StaticTypeWarningCode.UNDEFINED_SUPER_METHOD;
-    } else {
-      //
-      // This is really a function expression invocation.
-      //
-      // TODO(brianwilkerson) Consider the possibility of re-writing the AST.
-      if (element is PropertyInducingElement) {
-        PropertyAccessorElement getter = element.getter;
-        FunctionType getterType = getter.type;
-        if (getterType != null) {
-          DartType returnType = getterType.returnType;
-          return _getErrorCodeForExecuting(returnType);
-        }
-      } else if (element is VariableElement) {
-        return _getErrorCodeForExecuting(type);
-      } else {
-        if (target == null) {
-          ClassElement enclosingClass = _resolver.enclosingClass;
-          if (enclosingClass == null) {
-            return StaticTypeWarningCode.UNDEFINED_FUNCTION;
-          } else if (element == null) {
-            // Proxy-conditional warning, based on state of
-            // resolver.getEnclosingClass()
-            return StaticTypeWarningCode.UNDEFINED_METHOD;
-          } else {
-            return StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION;
-          }
-        } else {
-          DartType targetType;
-          if (useStaticContext) {
-            targetType = _getStaticType(target);
-          } else {
-            // Compute and use the propagated type, if it is null, then it may
-            // be the case that static type is some type, in which the static
-            // type should be used.
-            targetType = _getBestType(target);
-          }
-          if (targetType == null) {
-            if (target is Identifier &&
-                _resolver.nameScope.shouldIgnoreUndefined(target)) {
-              return null;
-            }
-            return StaticTypeWarningCode.UNDEFINED_FUNCTION;
-          } else if (targetType.isVoid) {
-            return StaticWarningCode.USE_OF_VOID_RESULT;
-          } else if (!targetType.isDynamic && target is! NullLiteral) {
-            // Proxy-conditional warning, based on state of
-            // targetType.getElement()
-            return StaticTypeWarningCode.UNDEFINED_METHOD;
-          } else if (targetType.isDynamic) {
-            PropertyAccessorElement getter =
-                _resolver.typeProvider.objectType.getGetter(name);
-            if (getter != null && getter.returnType is! FunctionType) {
-              return StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION;
-            }
-          }
-        }
-      }
-    }
-    return null;
   }
 
   /**
@@ -1275,50 +940,6 @@
   }
 
   /**
-   * If the given [element] is a setter, return the getter associated with it.
-   * Otherwise, return the element unchanged.
-   */
-  Element _convertSetterToGetter(Element element) {
-    // TODO(brianwilkerson) Determine whether and why the element could ever be
-    // a setter.
-    if (element is PropertyAccessorElement) {
-      return element.variable.getter;
-    }
-    return element;
-  }
-
-  /**
-   * Return the best type of the given [expression] that is to be used for
-   * type analysis.
-   */
-  DartType _getBestType(Expression expression) {
-    DartType bestType = _resolveTypeParameter(expression.staticType);
-    if (bestType is FunctionType) {
-      //
-      // All function types are subtypes of 'Function', which is itself a
-      // subclass of 'Object'.
-      //
-      bestType = _resolver.typeProvider.functionType;
-    }
-    return bestType;
-  }
-
-  /**
-   * Return an error if the [type], which is presumably being invoked, is not a
-   * function. The errors for non functions may be broken up by type; currently,
-   * it returns a special value for when the type is `void`.
-   */
-  ErrorCode _getErrorCodeForExecuting(DartType type) {
-    if (_isExecutableType(type)) {
-      return null;
-    }
-
-    return type.isVoid
-        ? StaticWarningCode.USE_OF_VOID_RESULT
-        : StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION;
-  }
-
-  /**
    * Assuming that the given [identifier] is a prefix for a deferred import,
    * return the library that is being imported.
    */
@@ -1330,28 +951,6 @@
   }
 
   /**
-   * Given an element, computes the type of the invocation.
-   *
-   * For executable elements (like methods, functions) this is just their type.
-   *
-   * For variables it is their type taking into account any type promotion.
-   *
-   * For calls to getters in Dart, we invoke the function that is returned by
-   * the getter, so the invoke type is the getter's returnType.
-   */
-  DartType _getInvokeType(Element element) {
-    DartType invokeType;
-    if (element is PropertyAccessorElement) {
-      invokeType = element.returnType;
-    } else if (element is ExecutableElement) {
-      invokeType = element.type;
-    } else if (element is VariableElement) {
-      invokeType = _promoteManager.getStaticType(element);
-    }
-    return invokeType ?? DynamicTypeImpl.instance;
-  }
-
-  /**
    * Return the name of the method invoked by the given postfix [expression].
    */
   String _getPostfixOperator(PostfixExpression expression) =>
@@ -1461,25 +1060,6 @@
   }
 
   /**
-   * Return `true` if the given [type] represents an object that could be
-   * invoked using the call operator '()'.
-   */
-  bool _isExecutableType(DartType type) {
-    type = type?.resolveToBound(_resolver.typeProvider.objectType);
-    if (type.isDynamic || type is FunctionType) {
-      return true;
-    } else if (type.isDartCoreFunction) {
-      return true;
-    } else if (type is InterfaceType) {
-      ClassElement classElement = type.element;
-      MethodElement methodElement = classElement.lookUpMethod(
-          FunctionElement.CALL_METHOD_NAME, _definingLibrary);
-      return methodElement != null;
-    }
-    return false;
-  }
-
-  /**
    * Return `true` if the given [element] is a static element.
    */
   bool _isStatic(Element element) {
@@ -1582,18 +1162,18 @@
 
   /**
    * Look up the [FunctionType] of a getter or a method with the given [name]
-   * in the given [targetType].  The [target] is the target of the invocation,
-   * or `null` if there is no target.
+   * in the given [targetType].
    */
-  FunctionType _lookUpGetterType(
-      Expression target, DartType targetType, String name) {
+  FunctionType _lookUpGetterType(DartType targetType, String name,
+      {bool concrete: false, bool forSuper: false}) {
     targetType = _resolveTypeParameter(targetType);
     if (targetType is InterfaceType) {
       var nameObject = new Name(_definingLibrary.source.uri, name);
       return _inheritance.getMember(
         targetType,
         nameObject,
-        forSuper: target is SuperExpression,
+        concrete: concrete,
+        forSuper: forSuper,
       );
     }
     return null;
@@ -1752,8 +1332,7 @@
       }
       // Class(args)
       if (element1 is ClassElement) {
-        constructor = new InterfaceTypeImpl(element1)
-            .lookUpConstructor(null, _definingLibrary);
+        constructor = element1.type.lookUpConstructor(null, _definingLibrary);
       } else if (element1 == null) {
         undefined = true;
       }
@@ -1781,8 +1360,8 @@
       }
       // Class.constructor(args)
       if (element1 is ClassElement) {
-        constructor = new InterfaceTypeImpl(element1)
-            .lookUpConstructor(nameNode2.name, _definingLibrary);
+        constructor =
+            element1.type.lookUpConstructor(nameNode2.name, _definingLibrary);
         nameNode2.staticElement = constructor;
       }
       if (element1 == null && element2 == null) {
@@ -1807,8 +1386,7 @@
           return;
         }
         // prefix.Class.constructor(args)
-        constructor = new InterfaceTypeImpl(element2)
-            .lookUpConstructor(name3, _definingLibrary);
+        constructor = element2.type.lookUpConstructor(name3, _definingLibrary);
         nameNode3.staticElement = constructor;
       } else if (element2 == null) {
         undefined = true;
@@ -1894,12 +1472,14 @@
     Expression leftOperand = node.leftOperand;
     if (leftOperand != null) {
       DartType leftType = _getStaticType(leftOperand);
-      var invokeType = _lookUpGetterType(leftOperand, leftType, methodName);
+      var isSuper = leftOperand is SuperExpression;
+      var invokeType = _lookUpGetterType(leftType, methodName,
+          concrete: isSuper, forSuper: isSuper);
       var invokeElement = invokeType?.element;
       node.staticElement = invokeElement;
       node.staticInvokeType = invokeType;
       if (_shouldReportMissingMember(leftType, invokeElement)) {
-        if (leftOperand is SuperExpression) {
+        if (isSuper) {
           _recordUndefinedToken(
               leftType.element,
               StaticTypeWarningCode.UNDEFINED_SUPER_OPERATOR,
@@ -1978,103 +1558,6 @@
   }
 
   /**
-   * Given an invocation of the form 'm(a1, ..., an)', resolve 'm' to the
-   * element being invoked. If the returned element is a method, then the method
-   * will be invoked. If the returned element is a getter, the getter will be
-   * invoked without arguments and the result of that invocation will then be
-   * invoked with the arguments. The [methodName] is the name of the method
-   * being invoked ('m').
-   */
-  Element _resolveInvokedElement(SimpleIdentifier methodName) {
-    //
-    // Look first in the lexical scope.
-    //
-    Element element = _resolver.nameScope.lookup(methodName, _definingLibrary);
-    if (element == null) {
-      //
-      // If it isn't defined in the lexical scope, and the invocation is within
-      // a class, then look in the inheritance scope.
-      //
-      ClassElement enclosingClass = _resolver.enclosingClass;
-      if (enclosingClass != null) {
-        InterfaceType enclosingType = enclosingClass.type;
-        element = _lookUpMethod(null, enclosingType, methodName.name);
-        if (element == null) {
-          //
-          // If there's no method, then it's possible that 'm' is a getter that
-          // returns a function.
-          //
-          element = _lookUpGetter(null, enclosingType, methodName.name);
-        }
-      }
-    }
-    // TODO(brianwilkerson) Report this error.
-    return element;
-  }
-
-  /**
-   * Given an invocation of the form 'e.m(a1, ..., an)', resolve 'e.m' to the
-   * element being invoked. If the returned element is a method, then the method
-   * will be invoked. If the returned element is a getter, the getter will be
-   * invoked without arguments and the result of that invocation will then be
-   * invoked with the arguments. The [target] is the target of the invocation
-   * ('e'). The [targetType] is the type of the target. The [methodName] is th
-   * name of the method being invoked ('m').  [isConditional] indicates
-   * whether the invocation uses a '?.' operator.
-   */
-  Element _resolveInvokedElementWithTarget(Expression target,
-      DartType targetType, SimpleIdentifier methodName, bool isConditional) {
-    String name = methodName.name;
-    if (targetType is InterfaceType) {
-      Element element = _lookUpMethod(target, targetType, name);
-      if (element == null) {
-        //
-        // If there's no method, then it's possible that 'm' is a getter that
-        // returns a function.
-        //
-        // TODO (collinsn): need to add union type support here too, in the
-        // style of [lookUpMethod].
-        element = _lookUpGetter(target, targetType, name);
-      }
-      return element;
-    } else if (targetType is FunctionType &&
-        _resolver.typeProvider.isObjectMethod(name)) {
-      return _resolver.typeProvider.objectType.element.getMethod(name);
-    } else if (target is SimpleIdentifier) {
-      Element targetElement = target.staticElement;
-      if (targetType is FunctionType &&
-          name == FunctionElement.CALL_METHOD_NAME) {
-        return targetElement;
-      }
-      if (targetElement is PrefixElement) {
-        if (isConditional) {
-          _resolver.errorReporter.reportErrorForNode(
-              CompileTimeErrorCode.PREFIX_IDENTIFIER_NOT_FOLLOWED_BY_DOT,
-              target,
-              [target.name]);
-        }
-        //
-        // Look to see whether the name of the method is really part of a
-        // prefixed identifier for an imported top-level function or top-level
-        // getter that returns a function.
-        //
-        Identifier functionName =
-            new PrefixedIdentifierImpl.temp(target, methodName);
-        Element element =
-            _resolver.nameScope.lookup(functionName, _definingLibrary);
-        if (element != null) {
-          // TODO(brianwilkerson) This isn't a method invocation, it's a
-          // function invocation where the function name is a prefixed
-          // identifier. Consider re-writing the AST.
-          return element;
-        }
-      }
-    }
-    // TODO(brianwilkerson) Report this error.
-    return null;
-  }
-
-  /**
    * Given a [node] that can have annotations associated with it, resolve the
    * annotations in the element model representing annotations to the node.
    */
@@ -2134,10 +1617,16 @@
                 propertyName.name, _definingLibrary,
                 setter: propertyName.inSetterContext(), concrete: false);
             if (staticElement != null) {
-              _resolver.errorReporter.reportErrorForNode(
-                  CompileTimeErrorCode.ABSTRACT_SUPER_MEMBER_REFERENCE,
-                  propertyName,
-                  [staticElement.kind.displayName, propertyName.name]);
+              ClassElementImpl receiverSuperClass =
+                  AbstractClassElementImpl.getImpl(
+                staticType.element.supertype.element,
+              );
+              if (!receiverSuperClass.hasNoSuchMethod) {
+                _resolver.errorReporter.reportErrorForNode(
+                    CompileTimeErrorCode.ABSTRACT_SUPER_MEMBER_REFERENCE,
+                    propertyName,
+                    [staticElement.kind.displayName, propertyName.name]);
+              }
             }
           }
         }
diff --git a/pkg/analyzer/lib/src/generated/engine.dart b/pkg/analyzer/lib/src/generated/engine.dart
index 91e3739..f4d63dc 100644
--- a/pkg/analyzer/lib/src/generated/engine.dart
+++ b/pkg/analyzer/lib/src/generated/engine.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -40,6 +40,7 @@
 import 'package:path/path.dart' as pathos;
 import 'package:plugin/manager.dart';
 import 'package:plugin/plugin.dart';
+import 'package:pub_semver/pub_semver.dart';
 
 export 'package:analyzer/error/listener.dart' show RecordingErrorListener;
 export 'package:analyzer/src/generated/timestamped_data.dart'
@@ -1147,10 +1148,10 @@
   AnalyzeFunctionBodiesPredicate get analyzeFunctionBodiesPredicate;
 
   /**
-   * DEPRECATED: Return the maximum number of sources for which AST structures should be
+   * Return the maximum number of sources for which AST structures should be
    * kept in the cache.
    *
-   * This setting no longer has any effect.
+   * DEPRECATED: This setting no longer has any effect.
    */
   @deprecated
   int get cacheSize;
@@ -1197,6 +1198,15 @@
   bool get enableConditionalDirectives;
 
   /**
+   * Return a list containing the names of the experiments that are enabled in
+   * the context associated with these options.
+   *
+   * The process around these experiments is described in this
+   * [doc](https://github.com/dart-lang/sdk/blob/master/docs/process/experimental-flags.md).
+   */
+  List<String> get enabledExperiments;
+
+  /**
    * Return a list of the names of the packages for which, if they define a
    * plugin, the plugin should be enabled.
    */
@@ -1301,6 +1311,12 @@
   bool get previewDart2;
 
   /**
+   * The version range for the SDK specified in `pubspec.yaml`, or `null` if
+   * there is no `pubspec.yaml` or if it does not contain an SDK range.
+   */
+  VersionConstraint get sdkVersionConstraint;
+
+  /**
    * Return the opaque signature of the options.
    *
    * The length of the list is guaranteed to equal [signatureLength].
@@ -1338,6 +1354,7 @@
    * Set the values of the cross-context options to match those in the given set
    * of [options].
    */
+  @deprecated
   void setCrossContextOptionsFrom(AnalysisOptions options);
 
   /**
@@ -1394,13 +1411,8 @@
    */
   Uint32List _signature;
 
-  /**
-   * A flag indicating whether declaration casts are allowed in [strongMode]
-   * (they are always allowed in Dart 1.0 mode).
-   *
-   * This option is deprecated and will be removed in a future release.
-   */
-  bool declarationCasts = true;
+  @override
+  VersionConstraint sdkVersionConstraint;
 
   @override
   @deprecated
@@ -1410,6 +1422,9 @@
   bool dart2jsHint = false;
 
   @override
+  List<String> enabledExperiments = const <String>[];
+
+  @override
   List<String> enabledPluginNames = const <String>[];
 
   @override
@@ -1489,13 +1504,6 @@
    */
   bool implicitDynamic = true;
 
-  // A no-op setter.
-  /**
-   * Return `true` to enable mixin declarations.
-   * https://github.com/dart-lang/language/issues/12
-   */
-  bool isMixinSupportEnabled = false;
-
   /**
    * Initialize a newly created set of analysis options to have their default
    * values.
@@ -1509,6 +1517,7 @@
   AnalysisOptionsImpl.from(AnalysisOptions options) {
     analyzeFunctionBodiesPredicate = options.analyzeFunctionBodiesPredicate;
     dart2jsHint = options.dart2jsHint;
+    enabledExperiments = options.enabledExperiments;
     enabledPluginNames = options.enabledPluginNames;
     enableLazyAssignmentOperators = options.enableLazyAssignmentOperators;
     enableTiming = options.enableTiming;
@@ -1522,15 +1531,14 @@
     preserveComments = options.preserveComments;
     useFastaParser = options.useFastaParser;
     if (options is AnalysisOptionsImpl) {
-      declarationCasts = options.declarationCasts;
       strongModeHints = options.strongModeHints;
       implicitCasts = options.implicitCasts;
       implicitDynamic = options.implicitDynamic;
-      isMixinSupportEnabled = options.isMixinSupportEnabled;
     }
     trackCacheDependencies = options.trackCacheDependencies;
     disableCacheFlushing = options.disableCacheFlushing;
     patchPaths = options.patchPaths;
+    sdkVersionConstraint = options.sdkVersionConstraint;
   }
 
   bool get analyzeFunctionBodies {
@@ -1645,6 +1653,16 @@
     _excludePatterns = patterns;
   }
 
+  /**
+   * Return `true` to enable mixin declarations.
+   * https://github.com/dart-lang/language/issues/12
+   */
+  @deprecated
+  bool get isMixinSupportEnabled => true;
+
+  @deprecated
+  set isMixinSupportEnabled(bool value) {}
+
   @override
   List<Linter> get lintRules => _lintRules ??= const <Linter>[];
 
@@ -1656,9 +1674,11 @@
     _lintRules = rules;
   }
 
+  @deprecated
   @override
   bool get previewDart2 => true;
 
+  @deprecated
   set previewDart2(bool value) {}
 
   @override
@@ -1666,15 +1686,23 @@
     if (_signature == null) {
       ApiSignature buffer = new ApiSignature();
 
+      // Append environment.
+      if (sdkVersionConstraint != null) {
+        buffer.addString(sdkVersionConstraint.toString());
+      }
+
       // Append boolean flags.
-      buffer.addBool(declarationCasts);
       buffer.addBool(enableLazyAssignmentOperators);
       buffer.addBool(implicitCasts);
       buffer.addBool(implicitDynamic);
       buffer.addBool(strongModeHints);
       buffer.addBool(useFastaParser);
-      buffer.addBool(previewDart2);
-      buffer.addBool(isMixinSupportEnabled);
+
+      // Append enabled experiments.
+      buffer.addInt(enabledExperiments.length);
+      for (String experimentName in enabledExperiments) {
+        buffer.addString(experimentName);
+      }
 
       // Append error processors.
       buffer.addInt(errorProcessors.length);
@@ -1730,9 +1758,9 @@
 
   @override
   void resetToDefaults() {
-    declarationCasts = true;
     dart2jsHint = false;
     disableCacheFlushing = false;
+    enabledExperiments = const <String>[];
     enabledPluginNames = const <String>[];
     enableLazyAssignmentOperators = false;
     enableTiming = false;
@@ -1749,9 +1777,10 @@
     preserveComments = true;
     strongModeHints = false;
     trackCacheDependencies = true;
-    useFastaParser = false;
+    useFastaParser = true;
   }
 
+  @deprecated
   @override
   void setCrossContextOptionsFrom(AnalysisOptions options) {
     enableLazyAssignmentOperators = options.enableLazyAssignmentOperators;
@@ -2686,7 +2715,7 @@
  * An visitor that removes any resolution information from an AST structure when
  * used to visit that structure.
  */
-class ResolutionEraser extends GeneralizingAstVisitor<Object> {
+class ResolutionEraser extends GeneralizingAstVisitor<void> {
   /**
    * A flag indicating whether the elements associated with declarations should
    * be erased.
@@ -2694,122 +2723,122 @@
   bool eraseDeclarations = true;
 
   @override
-  Object visitAssignmentExpression(AssignmentExpression node) {
+  void visitAssignmentExpression(AssignmentExpression node) {
     node.staticElement = null;
-    return super.visitAssignmentExpression(node);
+    super.visitAssignmentExpression(node);
   }
 
   @override
-  Object visitBinaryExpression(BinaryExpression node) {
+  void visitBinaryExpression(BinaryExpression node) {
     node.staticElement = null;
-    return super.visitBinaryExpression(node);
+    super.visitBinaryExpression(node);
   }
 
   @override
-  Object visitBreakStatement(BreakStatement node) {
+  void visitBreakStatement(BreakStatement node) {
     node.target = null;
-    return super.visitBreakStatement(node);
+    super.visitBreakStatement(node);
   }
 
   @override
-  Object visitCompilationUnit(CompilationUnit node) {
+  void visitCompilationUnit(CompilationUnit node) {
     if (eraseDeclarations) {
       node.element = null;
     }
-    return super.visitCompilationUnit(node);
+    super.visitCompilationUnit(node);
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     if (eraseDeclarations) {
       node.element = null;
     }
-    return super.visitConstructorDeclaration(node);
+    super.visitConstructorDeclaration(node);
   }
 
   @override
-  Object visitConstructorName(ConstructorName node) {
+  void visitConstructorName(ConstructorName node) {
     node.staticElement = null;
-    return super.visitConstructorName(node);
+    super.visitConstructorName(node);
   }
 
   @override
-  Object visitContinueStatement(ContinueStatement node) {
+  void visitContinueStatement(ContinueStatement node) {
     node.target = null;
-    return super.visitContinueStatement(node);
+    super.visitContinueStatement(node);
   }
 
   @override
-  Object visitDirective(Directive node) {
+  void visitDirective(Directive node) {
     if (eraseDeclarations) {
       node.element = null;
     }
-    return super.visitDirective(node);
+    super.visitDirective(node);
   }
 
   @override
-  Object visitExpression(Expression node) {
+  void visitExpression(Expression node) {
     node.staticType = null;
-    return super.visitExpression(node);
+    super.visitExpression(node);
   }
 
   @override
-  Object visitFunctionExpression(FunctionExpression node) {
+  void visitFunctionExpression(FunctionExpression node) {
     if (eraseDeclarations) {
       node.element = null;
     }
-    return super.visitFunctionExpression(node);
+    super.visitFunctionExpression(node);
   }
 
   @override
-  Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
+  void visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     node.staticElement = null;
-    return super.visitFunctionExpressionInvocation(node);
+    super.visitFunctionExpressionInvocation(node);
   }
 
   @override
-  Object visitIndexExpression(IndexExpression node) {
+  void visitIndexExpression(IndexExpression node) {
     node.staticElement = null;
-    return super.visitIndexExpression(node);
+    super.visitIndexExpression(node);
   }
 
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     node.staticElement = null;
-    return super.visitInstanceCreationExpression(node);
+    super.visitInstanceCreationExpression(node);
   }
 
   @override
-  Object visitPostfixExpression(PostfixExpression node) {
+  void visitPostfixExpression(PostfixExpression node) {
     node.staticElement = null;
-    return super.visitPostfixExpression(node);
+    super.visitPostfixExpression(node);
   }
 
   @override
-  Object visitPrefixExpression(PrefixExpression node) {
+  void visitPrefixExpression(PrefixExpression node) {
     node.staticElement = null;
-    return super.visitPrefixExpression(node);
+    super.visitPrefixExpression(node);
   }
 
   @override
-  Object visitRedirectingConstructorInvocation(
+  void visitRedirectingConstructorInvocation(
       RedirectingConstructorInvocation node) {
     node.staticElement = null;
-    return super.visitRedirectingConstructorInvocation(node);
+    super.visitRedirectingConstructorInvocation(node);
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     if (eraseDeclarations || !node.inDeclarationContext()) {
       node.staticElement = null;
     }
-    return super.visitSimpleIdentifier(node);
+    super.visitSimpleIdentifier(node);
   }
 
   @override
-  Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
+  void visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     node.staticElement = null;
-    return super.visitSuperConstructorInvocation(node);
+    super.visitSuperConstructorInvocation(node);
   }
 
   /**
diff --git a/pkg/analyzer/lib/src/generated/error_verifier.dart b/pkg/analyzer/lib/src/generated/error_verifier.dart
index 207515d..5ca19f8 100644
--- a/pkg/analyzer/lib/src/generated/error_verifier.dart
+++ b/pkg/analyzer/lib/src/generated/error_verifier.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -34,7 +34,7 @@
  * A visitor used to traverse an AST structure looking for additional errors and
  * warnings not covered by the parser and resolver.
  */
-class ErrorVerifier extends RecursiveAstVisitor<Object> {
+class ErrorVerifier extends RecursiveAstVisitor<void> {
   /**
    * The error reporter by which errors will be reported.
    */
@@ -328,38 +328,38 @@
   }
 
   @override
-  Object visitAnnotation(Annotation node) {
+  void visitAnnotation(Annotation node) {
     _checkForInvalidAnnotationFromDeferredLibrary(node);
     _checkForMissingJSLibAnnotation(node);
-    return super.visitAnnotation(node);
+    super.visitAnnotation(node);
   }
 
   @override
-  Object visitArgumentList(ArgumentList node) {
+  void visitArgumentList(ArgumentList node) {
     _checkForArgumentTypesNotAssignableInList(node);
-    return super.visitArgumentList(node);
+    super.visitArgumentList(node);
   }
 
   @override
-  Object visitAsExpression(AsExpression node) {
+  void visitAsExpression(AsExpression node) {
     _checkForTypeAnnotationDeferredClass(node.type);
-    return super.visitAsExpression(node);
+    super.visitAsExpression(node);
   }
 
   @override
-  Object visitAssertInitializer(AssertInitializer node) {
+  void visitAssertInitializer(AssertInitializer node) {
     _checkForNonBoolExpression(node);
-    return super.visitAssertInitializer(node);
+    super.visitAssertInitializer(node);
   }
 
   @override
-  Object visitAssertStatement(AssertStatement node) {
+  void visitAssertStatement(AssertStatement node) {
     _checkForNonBoolExpression(node);
-    return super.visitAssertStatement(node);
+    super.visitAssertStatement(node);
   }
 
   @override
-  Object visitAssignmentExpression(AssignmentExpression node) {
+  void visitAssignmentExpression(AssignmentExpression node) {
     TokenType operatorType = node.operator.type;
     Expression lhs = node.leftHandSide;
     Expression rhs = node.rightHandSide;
@@ -371,20 +371,20 @@
       _checkForArgumentTypeNotAssignableForArgument(rhs);
     }
     _checkForAssignmentToFinal(lhs);
-    return super.visitAssignmentExpression(node);
+    super.visitAssignmentExpression(node);
   }
 
   @override
-  Object visitAwaitExpression(AwaitExpression node) {
+  void visitAwaitExpression(AwaitExpression node) {
     if (!_inAsync) {
       _errorReporter.reportErrorForToken(
           CompileTimeErrorCode.AWAIT_IN_WRONG_CONTEXT, node.awaitKeyword);
     }
-    return super.visitAwaitExpression(node);
+    super.visitAwaitExpression(node);
   }
 
   @override
-  Object visitBinaryExpression(BinaryExpression node) {
+  void visitBinaryExpression(BinaryExpression node) {
     Token operator = node.operator;
     TokenType type = operator.type;
     if (type == TokenType.AMPERSAND_AMPERSAND || type == TokenType.BAR_BAR) {
@@ -398,22 +398,22 @@
       _checkForArgumentTypeNotAssignableForArgument(node.rightOperand);
     }
     _checkForUseOfVoidResult(node.leftOperand);
-    return super.visitBinaryExpression(node);
+    super.visitBinaryExpression(node);
   }
 
   @override
-  Object visitBlock(Block node) {
+  void visitBlock(Block node) {
     _hiddenElements = new HiddenElements(_hiddenElements, node);
     try {
       _checkDuplicateDeclarationInStatements(node.statements);
-      return super.visitBlock(node);
+      super.visitBlock(node);
     } finally {
       _hiddenElements = _hiddenElements.outerElements;
     }
   }
 
   @override
-  Object visitBlockFunctionBody(BlockFunctionBody node) {
+  void visitBlockFunctionBody(BlockFunctionBody node) {
     bool wasInAsync = _inAsync;
     bool wasInGenerator = _inGenerator;
     bool previousHasReturnWithoutValue = _hasReturnWithoutValue;
@@ -434,11 +434,10 @@
       _returnsWithout = previousReturnsWithout;
       _hasReturnWithoutValue = previousHasReturnWithoutValue;
     }
-    return null;
   }
 
   @override
-  Object visitBreakStatement(BreakStatement node) {
+  void visitBreakStatement(BreakStatement node) {
     SimpleIdentifier labelNode = node.label;
     if (labelNode != null) {
       Element labelElement = labelNode.staticElement;
@@ -447,24 +446,23 @@
             ResolverErrorCode.BREAK_LABEL_ON_SWITCH_MEMBER, labelNode);
       }
     }
-    return null;
   }
 
   @override
-  Object visitCatchClause(CatchClause node) {
+  void visitCatchClause(CatchClause node) {
     _checkDuplicateDefinitionInCatchClause(node);
     bool previousIsInCatchClause = _isInCatchClause;
     try {
       _isInCatchClause = true;
       _checkForTypeAnnotationDeferredClass(node.exceptionType);
-      return super.visitCatchClause(node);
+      super.visitCatchClause(node);
     } finally {
       _isInCatchClause = previousIsInCatchClause;
     }
   }
 
   @override
-  Object visitClassDeclaration(ClassDeclaration node) {
+  void visitClassDeclaration(ClassDeclaration node) {
     ClassElementImpl outerClass = _enclosingClass;
     try {
       _isInNativeClass = node.nativeClause != null;
@@ -491,7 +489,7 @@
       _initializeInitialFieldElementsMap(_enclosingClass.fields);
       _checkForFinalNotInitializedInClass(members);
       _checkForBadFunctionUse(node);
-      return super.visitClassDeclaration(node);
+      super.visitClassDeclaration(node);
     } finally {
       _isInNativeClass = false;
       _initialFieldElementsMap = null;
@@ -500,7 +498,7 @@
   }
 
   @override
-  Object visitClassTypeAlias(ClassTypeAlias node) {
+  void visitClassTypeAlias(ClassTypeAlias node) {
     _checkForBuiltInIdentifierAsName(
         node.name, CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPEDEF_NAME);
     ClassElementImpl outerClassElement = _enclosingClass;
@@ -511,37 +509,37 @@
     } finally {
       _enclosingClass = outerClassElement;
     }
-    return super.visitClassTypeAlias(node);
+    super.visitClassTypeAlias(node);
   }
 
   @override
-  Object visitComment(Comment node) {
+  void visitComment(Comment node) {
     _isInComment = true;
     try {
-      return super.visitComment(node);
+      super.visitComment(node);
     } finally {
       _isInComment = false;
     }
   }
 
   @override
-  Object visitCompilationUnit(CompilationUnit node) {
+  void visitCompilationUnit(CompilationUnit node) {
     _checkDuplicateUnitMembers(node);
     _checkForDeferredPrefixCollisions(node);
-    return super.visitCompilationUnit(node);
+    super.visitCompilationUnit(node);
   }
 
   @override
-  Object visitConditionalExpression(ConditionalExpression node) {
+  void visitConditionalExpression(ConditionalExpression node) {
     _checkForNonBoolCondition(node.condition);
     // TODO(mfairhurst) Enable this and get code compliant.
     //_checkForUseOfVoidResult(node.thenExpression);
     //_checkForUseOfVoidResult(node.elseExpression);
-    return super.visitConditionalExpression(node);
+    super.visitConditionalExpression(node);
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     ExecutableElement outerFunction = _enclosingFunction;
     try {
       ConstructorElement constructorElement = node.declaredElement;
@@ -563,7 +561,7 @@
       _checkForUndefinedConstructorInInitializerImplicit(node);
       _checkForRedirectToNonConstConstructor(node, constructorElement);
       _checkForReturnInGenerativeConstructor(node);
-      return super.visitConstructorDeclaration(node);
+      super.visitConstructorDeclaration(node);
     } finally {
       _isEnclosingConstructorConst = false;
       _isInFactory = false;
@@ -572,7 +570,7 @@
   }
 
   @override
-  Object visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
+  void visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
     _isInConstructorInitializer = true;
     try {
       SimpleIdentifier fieldName = node.fieldName;
@@ -581,14 +579,14 @@
       if (staticElement is FieldElement) {
         _checkForFieldInitializerNotAssignable(node, staticElement);
       }
-      return super.visitConstructorFieldInitializer(node);
+      super.visitConstructorFieldInitializer(node);
     } finally {
       _isInConstructorInitializer = false;
     }
   }
 
   @override
-  Object visitContinueStatement(ContinueStatement node) {
+  void visitContinueStatement(ContinueStatement node) {
     SimpleIdentifier labelNode = node.label;
     if (labelNode != null) {
       Element labelElement = labelNode.staticElement;
@@ -598,36 +596,35 @@
             ResolverErrorCode.CONTINUE_LABEL_ON_SWITCH, labelNode);
       }
     }
-    return null;
   }
 
   @override
-  Object visitDefaultFormalParameter(DefaultFormalParameter node) {
+  void visitDefaultFormalParameter(DefaultFormalParameter node) {
     _checkForInvalidAssignment(node.identifier, node.defaultValue);
     _checkForDefaultValueInFunctionTypedParameter(node);
-    return super.visitDefaultFormalParameter(node);
+    super.visitDefaultFormalParameter(node);
   }
 
   @override
-  Object visitDoStatement(DoStatement node) {
+  void visitDoStatement(DoStatement node) {
     _checkForNonBoolCondition(node.condition);
-    return super.visitDoStatement(node);
+    super.visitDoStatement(node);
   }
 
   @override
-  Object visitEnumDeclaration(EnumDeclaration node) {
+  void visitEnumDeclaration(EnumDeclaration node) {
     ClassElement outerEnum = _enclosingEnum;
     try {
       _enclosingEnum = node.declaredElement;
       _checkDuplicateEnumMembers(node);
-      return super.visitEnumDeclaration(node);
+      super.visitEnumDeclaration(node);
     } finally {
       _enclosingEnum = outerEnum;
     }
   }
 
   @override
-  Object visitExportDirective(ExportDirective node) {
+  void visitExportDirective(ExportDirective node) {
     ExportElement exportElement = node.element;
     if (exportElement != null) {
       LibraryElement exportedLibrary = exportElement.exportedLibrary;
@@ -635,11 +632,11 @@
       _checkForExportDuplicateLibraryName(node, exportElement, exportedLibrary);
       _checkForExportInternalLibrary(node, exportElement);
     }
-    return super.visitExportDirective(node);
+    super.visitExportDirective(node);
   }
 
   @override
-  Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
+  void visitExpressionFunctionBody(ExpressionFunctionBody node) {
     bool wasInAsync = _inAsync;
     bool wasInGenerator = _inGenerator;
     try {
@@ -657,7 +654,7 @@
         _checkForReturnOfInvalidType(node.expression, expectedReturnType,
             isArrowFunction: true);
       }
-      return super.visitExpressionFunctionBody(node);
+      super.visitExpressionFunctionBody(node);
     } finally {
       _inAsync = wasInAsync;
       _inGenerator = wasInGenerator;
@@ -665,7 +662,7 @@
   }
 
   @override
-  Object visitFieldDeclaration(FieldDeclaration node) {
+  void visitFieldDeclaration(FieldDeclaration node) {
     _isInStaticVariableDeclaration = node.isStatic;
     _isInInstanceVariableDeclaration = !_isInStaticVariableDeclaration;
     if (_isInInstanceVariableDeclaration) {
@@ -676,7 +673,7 @@
       }
     }
     try {
-      return super.visitFieldDeclaration(node);
+      super.visitFieldDeclaration(node);
     } finally {
       _isInStaticVariableDeclaration = false;
       _isInInstanceVariableDeclaration = false;
@@ -684,41 +681,41 @@
   }
 
   @override
-  Object visitFieldFormalParameter(FieldFormalParameter node) {
+  void visitFieldFormalParameter(FieldFormalParameter node) {
     _checkForValidField(node);
     _checkForConstFormalParameter(node);
     _checkForPrivateOptionalParameter(node);
     _checkForFieldInitializingFormalRedirectingConstructor(node);
     _checkForTypeAnnotationDeferredClass(node.type);
-    return super.visitFieldFormalParameter(node);
+    super.visitFieldFormalParameter(node);
   }
 
   @override
-  Object visitForEachStatement(ForEachStatement node) {
+  void visitForEachStatement(ForEachStatement node) {
     _checkForInIterable(node);
-    return super.visitForEachStatement(node);
+    super.visitForEachStatement(node);
   }
 
   @override
-  Object visitFormalParameterList(FormalParameterList node) {
+  void visitFormalParameterList(FormalParameterList node) {
     _checkDuplicateDefinitionInParameterList(node);
     _checkUseOfCovariantInParameters(node);
-    return super.visitFormalParameterList(node);
+    super.visitFormalParameterList(node);
   }
 
   @override
-  Object visitForStatement(ForStatement node) {
+  void visitForStatement(ForStatement node) {
     if (node.condition != null) {
       _checkForNonBoolCondition(node.condition);
     }
     if (node.variables != null) {
       _checkDuplicateVariables(node.variables);
     }
-    return super.visitForStatement(node);
+    super.visitForStatement(node);
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     ExecutableElement functionElement = node.declaredElement;
     if (functionElement != null &&
         functionElement.enclosingElement is! CompilationUnitElement) {
@@ -751,31 +748,31 @@
       _checkForTypeAnnotationDeferredClass(returnType);
       _checkForIllegalReturnType(returnType);
       _checkForImplicitDynamicReturn(node.name, node.declaredElement);
-      return super.visitFunctionDeclaration(node);
+      super.visitFunctionDeclaration(node);
     } finally {
       _enclosingFunction = outerFunction;
     }
   }
 
   @override
-  Object visitFunctionExpression(FunctionExpression node) {
+  void visitFunctionExpression(FunctionExpression node) {
     // If this function expression is wrapped in a function declaration, don't
     // change the enclosingFunction field.
     if (node.parent is! FunctionDeclaration) {
       ExecutableElement outerFunction = _enclosingFunction;
       try {
         _enclosingFunction = node.declaredElement;
-        return super.visitFunctionExpression(node);
+        super.visitFunctionExpression(node);
       } finally {
         _enclosingFunction = outerFunction;
       }
     } else {
-      return super.visitFunctionExpression(node);
+      super.visitFunctionExpression(node);
     }
   }
 
   @override
-  Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
+  void visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     Expression functionExpression = node.function;
     DartType expressionType = functionExpression.staticType;
     if (!_checkForUseOfVoidResult(functionExpression) &&
@@ -787,20 +784,20 @@
       _checkTypeArguments(node);
     }
     _checkForImplicitDynamicInvoke(node);
-    return super.visitFunctionExpressionInvocation(node);
+    super.visitFunctionExpressionInvocation(node);
   }
 
   @override
-  Object visitFunctionTypeAlias(FunctionTypeAlias node) {
+  void visitFunctionTypeAlias(FunctionTypeAlias node) {
     _checkForBuiltInIdentifierAsName(
         node.name, CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPEDEF_NAME);
     _checkForDefaultValueInFunctionTypeAlias(node);
     _checkForTypeAliasCannotReferenceItself_function(node);
-    return super.visitFunctionTypeAlias(node);
+    super.visitFunctionTypeAlias(node);
   }
 
   @override
-  Object visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
+  void visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
     bool old = _isInFunctionTypedFormalParameter;
     _isInFunctionTypedFormalParameter = true;
     try {
@@ -828,35 +825,35 @@
             node);
       }
 
-      return super.visitFunctionTypedFormalParameter(node);
+      super.visitFunctionTypedFormalParameter(node);
     } finally {
       _isInFunctionTypedFormalParameter = old;
     }
   }
 
   @override
-  Object visitGenericTypeAlias(GenericTypeAlias node) {
+  void visitGenericTypeAlias(GenericTypeAlias node) {
     if (_hasTypedefSelfReference(node.declaredElement)) {
       _errorReporter.reportErrorForNode(
           CompileTimeErrorCode.TYPE_ALIAS_CANNOT_REFERENCE_ITSELF, node);
     }
-    return super.visitGenericTypeAlias(node);
+    super.visitGenericTypeAlias(node);
   }
 
   @override
-  Object visitIfStatement(IfStatement node) {
+  void visitIfStatement(IfStatement node) {
     _checkForNonBoolCondition(node.condition);
-    return super.visitIfStatement(node);
+    super.visitIfStatement(node);
   }
 
   @override
-  Object visitImplementsClause(ImplementsClause node) {
+  void visitImplementsClause(ImplementsClause node) {
     node.interfaces.forEach(_checkForImplicitDynamicType);
-    return super.visitImplementsClause(node);
+    super.visitImplementsClause(node);
   }
 
   @override
-  Object visitImportDirective(ImportDirective node) {
+  void visitImportDirective(ImportDirective node) {
     ImportElement importElement = node.element;
     if (node.prefix != null) {
       _checkForBuiltInIdentifierAsName(
@@ -866,17 +863,17 @@
       _checkForImportDuplicateLibraryName(node, importElement);
       _checkForImportInternalLibrary(node, importElement);
     }
-    return super.visitImportDirective(node);
+    super.visitImportDirective(node);
   }
 
   @override
-  Object visitIndexExpression(IndexExpression node) {
+  void visitIndexExpression(IndexExpression node) {
     _checkForArgumentTypeNotAssignableForArgument(node.index);
-    return super.visitIndexExpression(node);
+    super.visitIndexExpression(node);
   }
 
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     bool wasInConstInstanceCreation = _isInConstInstanceCreation;
     _isInConstInstanceCreation = node.isConst;
     try {
@@ -897,33 +894,33 @@
         }
       }
       _checkForImplicitDynamicType(typeName);
-      return super.visitInstanceCreationExpression(node);
+      super.visitInstanceCreationExpression(node);
     } finally {
       _isInConstInstanceCreation = wasInConstInstanceCreation;
     }
   }
 
   @override
-  Object visitIntegerLiteral(IntegerLiteral node) {
+  void visitIntegerLiteral(IntegerLiteral node) {
     _checkForOutOfRange(node);
-    return super.visitIntegerLiteral(node);
+    super.visitIntegerLiteral(node);
   }
 
   @override
-  Object visitInterpolationExpression(InterpolationExpression node) {
+  void visitInterpolationExpression(InterpolationExpression node) {
     _checkForUseOfVoidResult(node.expression);
-    return super.visitInterpolationExpression(node);
+    super.visitInterpolationExpression(node);
   }
 
   @override
-  Object visitIsExpression(IsExpression node) {
+  void visitIsExpression(IsExpression node) {
     _checkForTypeAnnotationDeferredClass(node.type);
     _checkForUseOfVoidResult(node.expression);
-    return super.visitIsExpression(node);
+    super.visitIsExpression(node);
   }
 
   @override
-  Object visitListLiteral(ListLiteral node) {
+  void visitListLiteral(ListLiteral node) {
     TypeArgumentList typeArguments = node.typeArguments;
     if (typeArguments != null) {
       if (node.isConst) {
@@ -938,11 +935,11 @@
     _checkForImplicitDynamicTypedLiteral(node);
     _checkForListElementTypeNotAssignable(node);
 
-    return super.visitListLiteral(node);
+    super.visitListLiteral(node);
   }
 
   @override
-  Object visitMapLiteral(MapLiteral node) {
+  void visitMapLiteral(MapLiteral node) {
     TypeArgumentList typeArguments = node.typeArguments;
     if (typeArguments != null) {
       NodeList<TypeAnnotation> arguments = typeArguments.arguments;
@@ -957,11 +954,11 @@
     _checkForImplicitDynamicTypedLiteral(node);
     _checkForMapTypeNotAssignable(node);
     _checkForNonConstMapAsExpressionStatement(node);
-    return super.visitMapLiteral(node);
+    super.visitMapLiteral(node);
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     ExecutableElement previousFunction = _enclosingFunction;
     try {
       _isInStaticMethod = node.isStatic;
@@ -981,7 +978,7 @@
       _checkForIllegalReturnType(returnType);
       _checkForImplicitDynamicReturn(node, node.declaredElement);
       _checkForMustCallSuper(node);
-      return super.visitMethodDeclaration(node);
+      super.visitMethodDeclaration(node);
     } finally {
       _enclosingFunction = previousFunction;
       _isInStaticMethod = false;
@@ -989,7 +986,7 @@
   }
 
   @override
-  Object visitMethodInvocation(MethodInvocation node) {
+  void visitMethodInvocation(MethodInvocation node) {
     Expression target = node.realTarget;
     SimpleIdentifier methodName = node.methodName;
     if (target != null) {
@@ -1001,11 +998,11 @@
     }
     _checkTypeArguments(node);
     _checkForImplicitDynamicInvoke(node);
-    return super.visitMethodInvocation(node);
+    super.visitMethodInvocation(node);
   }
 
   @override
-  Object visitMixinDeclaration(MixinDeclaration node) {
+  void visitMixinDeclaration(MixinDeclaration node) {
     // TODO(scheglov) Verify for all mixin errors.
     ClassElementImpl outerClass = _enclosingClass;
     try {
@@ -1029,7 +1026,7 @@
       _initializeInitialFieldElementsMap(_enclosingClass.fields);
       _checkForFinalNotInitializedInClass(members);
 //      _checkForBadFunctionUse(node);
-      return super.visitMixinDeclaration(node);
+      super.visitMixinDeclaration(node);
     } finally {
       _initialFieldElementsMap = null;
       _enclosingClass = outerClass;
@@ -1037,31 +1034,31 @@
   }
 
   @override
-  Object visitNativeClause(NativeClause node) {
+  void visitNativeClause(NativeClause node) {
     // TODO(brianwilkerson) Figure out the right rule for when 'native' is
     // allowed.
     if (!_isInSystemLibrary) {
       _errorReporter.reportErrorForNode(
           ParserErrorCode.NATIVE_CLAUSE_IN_NON_SDK_CODE, node);
     }
-    return super.visitNativeClause(node);
+    super.visitNativeClause(node);
   }
 
   @override
-  Object visitNativeFunctionBody(NativeFunctionBody node) {
+  void visitNativeFunctionBody(NativeFunctionBody node) {
     _checkForNativeFunctionBodyInNonSdkCode(node);
-    return super.visitNativeFunctionBody(node);
+    super.visitNativeFunctionBody(node);
   }
 
   @override
-  Object visitPostfixExpression(PostfixExpression node) {
+  void visitPostfixExpression(PostfixExpression node) {
     _checkForAssignmentToFinal(node.operand);
     _checkForIntNotAssignable(node.operand);
-    return super.visitPostfixExpression(node);
+    super.visitPostfixExpression(node);
   }
 
   @override
-  Object visitPrefixedIdentifier(PrefixedIdentifier node) {
+  void visitPrefixedIdentifier(PrefixedIdentifier node) {
     if (node.parent is! Annotation) {
       ClassElement typeReference =
           ElementResolver.getTypeReference(node.prefix);
@@ -1069,11 +1066,11 @@
       _checkForStaticAccessToInstanceMember(typeReference, name);
       _checkForInstanceAccessToStaticMember(typeReference, name);
     }
-    return super.visitPrefixedIdentifier(node);
+    super.visitPrefixedIdentifier(node);
   }
 
   @override
-  Object visitPrefixExpression(PrefixExpression node) {
+  void visitPrefixExpression(PrefixExpression node) {
     TokenType operatorType = node.operator.type;
     Expression operand = node.operand;
     if (operatorType == TokenType.BANG) {
@@ -1083,49 +1080,68 @@
     }
     _checkForIntNotAssignable(operand);
     _checkForUseOfVoidResult(operand);
-    return super.visitPrefixExpression(node);
+    super.visitPrefixExpression(node);
   }
 
   @override
-  Object visitPropertyAccess(PropertyAccess node) {
+  void visitPropertyAccess(PropertyAccess node) {
     ClassElement typeReference =
         ElementResolver.getTypeReference(node.realTarget);
     SimpleIdentifier propertyName = node.propertyName;
     _checkForStaticAccessToInstanceMember(typeReference, propertyName);
     _checkForInstanceAccessToStaticMember(typeReference, propertyName);
-    return super.visitPropertyAccess(node);
+    super.visitPropertyAccess(node);
   }
 
   @override
-  Object visitRedirectingConstructorInvocation(
+  void visitRedirectingConstructorInvocation(
       RedirectingConstructorInvocation node) {
     _isInConstructorInitializer = true;
     try {
-      return super.visitRedirectingConstructorInvocation(node);
+      super.visitRedirectingConstructorInvocation(node);
     } finally {
       _isInConstructorInitializer = false;
     }
   }
 
   @override
-  Object visitRethrowExpression(RethrowExpression node) {
+  void visitRethrowExpression(RethrowExpression node) {
     _checkForRethrowOutsideCatch(node);
-    return super.visitRethrowExpression(node);
+    super.visitRethrowExpression(node);
   }
 
   @override
-  Object visitReturnStatement(ReturnStatement node) {
+  void visitReturnStatement(ReturnStatement node) {
     if (node.expression == null) {
       _returnsWithout.add(node);
     } else {
       _returnsWith.add(node);
     }
     _checkForAllReturnStatementErrorCodes(node);
-    return super.visitReturnStatement(node);
+    super.visitReturnStatement(node);
   }
 
   @override
-  Object visitSimpleFormalParameter(SimpleFormalParameter node) {
+  void visitSetLiteral(SetLiteral node) {
+    TypeArgumentList typeArguments = node.typeArguments;
+    if (typeArguments != null) {
+      if (node.isConst) {
+        NodeList<TypeAnnotation> arguments = typeArguments.arguments;
+        if (arguments.isNotEmpty) {
+          _checkForInvalidTypeArgumentInConstTypedLiteral(arguments,
+              CompileTimeErrorCode.INVALID_TYPE_ARGUMENT_IN_CONST_SET);
+        }
+      }
+      _checkForExpectedOneSetTypeArgument(node, typeArguments);
+    }
+    _checkForImplicitDynamicTypedLiteral(node);
+    _checkForSetElementTypeNotAssignable(node);
+
+    super.visitSetLiteral(node);
+  }
+
+  @override
+  void visitSimpleFormalParameter(SimpleFormalParameter node) {
     _checkForConstFormalParameter(node);
     _checkForPrivateOptionalParameter(node);
     _checkForTypeAnnotationDeferredClass(node.type);
@@ -1138,88 +1154,87 @@
     // - FunctionTypedFormalParameter is a function type, not dynamic.
     _checkForImplicitDynamicIdentifier(node, node.identifier);
 
-    return super.visitSimpleFormalParameter(node);
+    super.visitSimpleFormalParameter(node);
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     _checkForAmbiguousImport(node);
     _checkForReferenceBeforeDeclaration(node);
     _checkForImplicitThisReferenceInInitializer(node);
-    _checkForTypeParameterIdentifierReferencedByStatic(node);
+    _checkForTypeParameterReferencedByStatic(node);
     if (!_isUnqualifiedReferenceToNonLocalStaticMemberAllowed(node)) {
       _checkForUnqualifiedReferenceToNonLocalStaticMember(node);
     }
-    return super.visitSimpleIdentifier(node);
+    super.visitSimpleIdentifier(node);
   }
 
   @override
-  Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
+  void visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     _isInConstructorInitializer = true;
     try {
-      return super.visitSuperConstructorInvocation(node);
+      super.visitSuperConstructorInvocation(node);
     } finally {
       _isInConstructorInitializer = false;
     }
   }
 
   @override
-  Object visitSwitchCase(SwitchCase node) {
+  void visitSwitchCase(SwitchCase node) {
     _checkDuplicateDeclarationInStatements(node.statements);
-    return super.visitSwitchCase(node);
+    super.visitSwitchCase(node);
   }
 
   @override
-  Object visitSwitchDefault(SwitchDefault node) {
+  void visitSwitchDefault(SwitchDefault node) {
     _checkDuplicateDeclarationInStatements(node.statements);
-    return super.visitSwitchDefault(node);
+    super.visitSwitchDefault(node);
   }
 
   @override
-  Object visitSwitchStatement(SwitchStatement node) {
+  void visitSwitchStatement(SwitchStatement node) {
     _checkForSwitchExpressionNotAssignable(node);
     _checkForCaseBlocksNotTerminated(node);
     _checkForMissingEnumConstantInSwitch(node);
-    return super.visitSwitchStatement(node);
+    super.visitSwitchStatement(node);
   }
 
   @override
-  Object visitThisExpression(ThisExpression node) {
+  void visitThisExpression(ThisExpression node) {
     _checkForInvalidReferenceToThis(node);
-    return super.visitThisExpression(node);
+    super.visitThisExpression(node);
   }
 
   @override
-  Object visitThrowExpression(ThrowExpression node) {
+  void visitThrowExpression(ThrowExpression node) {
     _checkForConstEvalThrowsException(node);
     _checkForUseOfVoidResult(node.expression);
-    return super.visitThrowExpression(node);
+    super.visitThrowExpression(node);
   }
 
   @override
-  Object visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
+  void visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
     _checkForFinalNotInitialized(node.variables);
-    return super.visitTopLevelVariableDeclaration(node);
+    super.visitTopLevelVariableDeclaration(node);
   }
 
   @override
-  Object visitTypeArgumentList(TypeArgumentList node) {
+  void visitTypeArgumentList(TypeArgumentList node) {
     NodeList<TypeAnnotation> list = node.arguments;
     for (TypeAnnotation type in list) {
       _checkForTypeAnnotationDeferredClass(type);
     }
-    return super.visitTypeArgumentList(node);
+    super.visitTypeArgumentList(node);
   }
 
   @override
-  Object visitTypeName(TypeName node) {
+  void visitTypeName(TypeName node) {
     _checkForTypeArgumentNotMatchingBounds(node);
-    _checkForTypeParameterReferencedByStatic(node);
-    return super.visitTypeName(node);
+    super.visitTypeName(node);
   }
 
   @override
-  Object visitTypeParameter(TypeParameter node) {
+  void visitTypeParameter(TypeParameter node) {
     _checkForBuiltInIdentifierAsName(node.name,
         CompileTimeErrorCode.BUILT_IN_IDENTIFIER_AS_TYPE_PARAMETER_NAME);
     _checkForTypeParameterSupertypeOfItsBound(node);
@@ -1227,22 +1242,21 @@
     _checkForImplicitDynamicType(node.bound);
     _checkForGenericFunctionType(node.bound);
     node.bound?.accept(_uninstantiatedBoundChecker);
-    return super.visitTypeParameter(node);
+    super.visitTypeParameter(node);
   }
 
   @override
-  Object visitTypeParameterList(TypeParameterList node) {
+  void visitTypeParameterList(TypeParameterList node) {
     _checkDuplicateDefinitionInTypeParameterList(node);
-    return super.visitTypeParameterList(node);
+    super.visitTypeParameterList(node);
   }
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     SimpleIdentifier nameNode = node.name;
     Expression initializerNode = node.initializer;
     // do checks
-    _checkForInvalidAssignment(nameNode, initializerNode,
-        isDeclarationCast: true);
+    _checkForInvalidAssignment(nameNode, initializerNode);
     _checkForImplicitDynamicIdentifier(node, nameNode);
     // visit name
     nameNode.accept(this);
@@ -1268,36 +1282,34 @@
         _hiddenElements.declare(element);
       }
     }
-    // done
-    return null;
   }
 
   @override
-  Object visitVariableDeclarationList(VariableDeclarationList node) {
+  void visitVariableDeclarationList(VariableDeclarationList node) {
     _checkForTypeAnnotationDeferredClass(node.type);
-    return super.visitVariableDeclarationList(node);
+    super.visitVariableDeclarationList(node);
   }
 
   @override
-  Object visitVariableDeclarationStatement(VariableDeclarationStatement node) {
+  void visitVariableDeclarationStatement(VariableDeclarationStatement node) {
     _checkForFinalNotInitialized(node.variables);
-    return super.visitVariableDeclarationStatement(node);
+    super.visitVariableDeclarationStatement(node);
   }
 
   @override
-  Object visitWhileStatement(WhileStatement node) {
+  void visitWhileStatement(WhileStatement node) {
     _checkForNonBoolCondition(node.condition);
-    return super.visitWhileStatement(node);
+    super.visitWhileStatement(node);
   }
 
   @override
-  Object visitWithClause(WithClause node) {
+  void visitWithClause(WithClause node) {
     node.mixinTypes.forEach(_checkForImplicitDynamicType);
-    return super.visitWithClause(node);
+    super.visitWithClause(node);
   }
 
   @override
-  Object visitYieldStatement(YieldStatement node) {
+  void visitYieldStatement(YieldStatement node) {
     if (_inGenerator) {
       _checkForYieldOfInvalidType(node.expression, node.star != null);
     } else {
@@ -1310,7 +1322,7 @@
       _errorReporter.reportErrorForNode(errorCode, node);
     }
     _checkForUseOfVoidResult(node.expression);
-    return super.visitYieldStatement(node);
+    super.visitYieldStatement(node);
   }
 
   /**
@@ -1911,8 +1923,7 @@
             if (_checkForMixinSuperclassConstraints(
                 mixinNameIndex, mixinName)) {
               problemReported = true;
-            }
-            if (_checkForMixinSuperInvokedMembers(
+            } else if (_checkForMixinSuperInvokedMembers(
                 mixinTypeIndex, mixinName, mixinElement, mixinType)) {
               problemReported = true;
             }
@@ -2218,24 +2229,20 @@
   }
 
   bool _checkForAssignableExpression(
-      Expression expression, DartType expectedStaticType, ErrorCode errorCode,
-      {bool isDeclarationCast = false}) {
+      Expression expression, DartType expectedStaticType, ErrorCode errorCode) {
     DartType actualStaticType = getStaticType(expression);
     return actualStaticType != null &&
         _checkForAssignableExpressionAtType(
-            expression, actualStaticType, expectedStaticType, errorCode,
-            isDeclarationCast: isDeclarationCast);
+            expression, actualStaticType, expectedStaticType, errorCode);
   }
 
   bool _checkForAssignableExpressionAtType(
       Expression expression,
       DartType actualStaticType,
       DartType expectedStaticType,
-      ErrorCode errorCode,
-      {bool isDeclarationCast = false}) {
+      ErrorCode errorCode) {
     if (!_expressionIsAssignableAtType(
-        expression, actualStaticType, expectedStaticType,
-        isDeclarationCast: isDeclarationCast)) {
+        expression, actualStaticType, expectedStaticType)) {
       _errorReporter.reportTypeErrorForNode(
           errorCode, expression, [actualStaticType, expectedStaticType]);
       return false;
@@ -2895,6 +2902,24 @@
   }
 
   /**
+   * Verify that if the given set [literal] has type arguments then there is
+   * exactly one. The [typeArguments] are the type arguments.
+   *
+   * See [StaticTypeWarningCode.EXPECTED_ONE_SET_TYPE_ARGUMENTS].
+   */
+  void _checkForExpectedOneSetTypeArgument(
+      SetLiteral literal, TypeArgumentList typeArguments) {
+    // check number of type arguments
+    int count = typeArguments.arguments.length;
+    if (count != 1) {
+      _errorReporter.reportErrorForNode(
+          StaticTypeWarningCode.EXPECTED_ONE_SET_TYPE_ARGUMENTS,
+          typeArguments,
+          [count]);
+    }
+  }
+
+  /**
    * Verify that the given export [directive] has a unique name among other
    * exported libraries. The [exportElement] is the [ExportElement] retrieved
    * from the node, if the element in the node was `null`, then this method is
@@ -3609,8 +3634,7 @@
           StaticTypeWarningCode.FOR_IN_OF_INVALID_TYPE,
           node.iterable,
           [iterableType, loopTypeName]);
-    } else if (!_typeSystem.isAssignableTo(bestIterableType, variableType,
-        isDeclarationCast: true)) {
+    } else if (!_typeSystem.isAssignableTo(bestIterableType, variableType)) {
       _errorReporter.reportTypeErrorForNode(
           StaticTypeWarningCode.FOR_IN_OF_INVALID_ELEMENT_TYPE,
           node.iterable,
@@ -3689,8 +3713,7 @@
    *
    * See [StaticTypeWarningCode.INVALID_ASSIGNMENT].
    */
-  void _checkForInvalidAssignment(Expression lhs, Expression rhs,
-      {bool isDeclarationCast = false}) {
+  void _checkForInvalidAssignment(Expression lhs, Expression rhs) {
     if (lhs == null || rhs == null) {
       return;
     }
@@ -3704,8 +3727,7 @@
     }
 
     _checkForAssignableExpression(
-        rhs, leftType, StaticTypeWarningCode.INVALID_ASSIGNMENT,
-        isDeclarationCast: isDeclarationCast);
+        rhs, leftType, StaticTypeWarningCode.INVALID_ASSIGNMENT);
   }
 
   /**
@@ -4147,6 +4169,11 @@
       return false;
     }
 
+    ClassElementImpl nominalSuperClass =
+        AbstractClassElementImpl.getImpl(_enclosingClass.supertype?.element);
+    bool nominalSuperClassHasNoSuchMethodForwarders =
+        nominalSuperClass != null && !nominalSuperClass.isAbstract;
+
     InterfaceTypeImpl enclosingType = _enclosingClass.type;
     Uri mixinLibraryUri = mixinElement.librarySource.uri;
     for (var name in mixinElementImpl.superInvokedNames) {
@@ -4154,9 +4181,12 @@
 
       var superMemberType = _inheritanceManager.getMember(
           enclosingType, nameObject,
-          forMixinIndex: mixinIndex, forSuper: true);
+          forMixinIndex: mixinIndex, concrete: true, forSuper: true);
 
       if (superMemberType == null) {
+        if (nominalSuperClassHasNoSuchMethodForwarders) {
+          continue;
+        }
         _errorReporter.reportErrorForNode(
             CompileTimeErrorCode
                 .MIXIN_APPLICATION_NO_CONCRETE_SUPER_INVOKED_MEMBER,
@@ -4321,7 +4351,7 @@
     DartType type = typeName.type;
     if (type is InterfaceType) {
       ClassElement element = type.element;
-      if (element != null && element.isEnum) {
+      if (element.isEnum || element.isMixin) {
         // We have already reported the error.
         return;
       }
@@ -4453,8 +4483,7 @@
       return;
     }
     // prepare statement
-    Statement statement =
-        literal.getAncestor((node) => node is ExpressionStatement);
+    Statement statement = literal.thisOrAncestorOfType<ExpressionStatement>();
     if (statement == null) {
       return;
     }
@@ -5032,6 +5061,41 @@
   }
 
   /**
+   * Verify that the elements in the given set [literal] are subtypes of the
+   * set's static type.
+   *
+   * See [CompileTimeErrorCode.SET_ELEMENT_TYPE_NOT_ASSIGNABLE], and
+   * [StaticWarningCode.SET_ELEMENT_TYPE_NOT_ASSIGNABLE].
+   */
+  void _checkForSetElementTypeNotAssignable(SetLiteral literal) {
+    // Determine the list's element type. We base this on the static type and
+    // not the literal's type arguments because in strong mode, the type
+    // arguments may be inferred.
+    DartType setType = literal.staticType;
+    assert(setType is InterfaceTypeImpl);
+
+    List<DartType> typeArguments = (setType as InterfaceTypeImpl).typeArguments;
+    assert(typeArguments.length == 1);
+
+    DartType setElementType = typeArguments[0];
+
+    // Check every list element.
+    bool isConst = literal.isConst;
+    for (Expression element in literal.elements) {
+      if (isConst) {
+        // TODO(paulberry): this error should be based on the actual type of the
+        // element, not the static type.  See dartbug.com/21119.
+        _checkForArgumentTypeNotAssignableWithExpectedTypes(
+            element,
+            setElementType,
+            CheckedModeCompileTimeErrorCode.SET_ELEMENT_TYPE_NOT_ASSIGNABLE);
+      }
+      _checkForArgumentTypeNotAssignableWithExpectedTypes(element,
+          setElementType, StaticWarningCode.SET_ELEMENT_TYPE_NOT_ASSIGNABLE);
+    }
+  }
+
+  /**
    * Check the given [typeReference] and that the [name] is not a reference to
    * an instance member.
    *
@@ -5175,10 +5239,10 @@
                 ? argumentNodes[i]
                 : typeName;
         if (argType is FunctionType && argType.typeFormals.isNotEmpty) {
-          _errorReporter.reportTypeErrorForNode(
-              CompileTimeErrorCode.GENERIC_FUNCTION_CANNOT_BE_TYPE_ARGUMENT,
-              argumentNode,
-              [argType.typeFormals.join(', ')]);
+          _errorReporter.reportErrorForNode(
+            CompileTimeErrorCode.GENERIC_FUNCTION_TYPE_CANNOT_BE_TYPE_ARGUMENT,
+            argumentNode,
+          );
           continue;
         }
         DartType boundType = parameterElements[i].bound;
@@ -5213,12 +5277,11 @@
     }
   }
 
-  void _checkForTypeParameterIdentifierReferencedByStatic(
-      SimpleIdentifier identifier) {
-    var element = identifier.staticElement;
-    if (element is TypeParameterElement &&
-        element.enclosingElement is ClassElement) {
-      if (_isInStaticMethod || _isInStaticVariableDeclaration) {
+  void _checkForTypeParameterReferencedByStatic(SimpleIdentifier identifier) {
+    if (_isInStaticMethod || _isInStaticVariableDeclaration) {
+      var element = identifier.staticElement;
+      if (element is TypeParameterElement &&
+          element.enclosingElement is ClassElement) {
         // The class's type parameters are not in scope for static methods.
         // However all other type parameters are legal (e.g. the static method's
         // type parameters, or a local function's type parameters).
@@ -5229,26 +5292,6 @@
   }
 
   /**
-   * Check whether the given type [name] is a type parameter being used to
-   * define a static member.
-   *
-   * See [StaticWarningCode.TYPE_PARAMETER_REFERENCED_BY_STATIC].
-   */
-  void _checkForTypeParameterReferencedByStatic(TypeName name) {
-    if (_isInStaticMethod || _isInStaticVariableDeclaration) {
-      DartType type = name.type;
-      // The class's type parameters are not in scope for static methods.
-      // However all other type parameters are legal (e.g. the static method's
-      // type parameters, or a local function's type parameters).
-      if (type is TypeParameterType &&
-          type.element.enclosingElement is ClassElement) {
-        _errorReporter.reportErrorForNode(
-            StaticWarningCode.TYPE_PARAMETER_REFERENCED_BY_STATIC, name);
-      }
-    }
-  }
-
-  /**
    * Check whether the given type [parameter] is a supertype of its bound.
    *
    * See [StaticTypeWarningCode.TYPE_PARAMETER_SUPERTYPE_OF_ITS_BOUND].
@@ -5720,10 +5763,10 @@
         DartType argType = typeArgs[i];
 
         if (argType is FunctionType && argType.typeFormals.isNotEmpty) {
-          _errorReporter.reportTypeErrorForNode(
-              CompileTimeErrorCode.GENERIC_FUNCTION_CANNOT_BE_TYPE_ARGUMENT,
-              typeArgumentList[i],
-              [argType.typeFormals.join(', ')]);
+          _errorReporter.reportErrorForNode(
+            CompileTimeErrorCode.GENERIC_FUNCTION_TYPE_CANNOT_BE_TYPE_ARGUMENT,
+            typeArgumentList[i],
+          );
           continue;
         }
 
@@ -5757,10 +5800,8 @@
   }
 
   bool _expressionIsAssignableAtType(Expression expression,
-      DartType actualStaticType, DartType expectedStaticType,
-      {isDeclarationCast: false}) {
-    return _typeSystem.isAssignableTo(actualStaticType, expectedStaticType,
-        isDeclarationCast: isDeclarationCast);
+      DartType actualStaticType, DartType expectedStaticType) {
+    return _typeSystem.isAssignableTo(actualStaticType, expectedStaticType);
   }
 
   InterfaceType _findInterfaceTypeForMixin(TypeName mixin,
@@ -5953,14 +5994,7 @@
   }
 
   ExecutableElement _getOverriddenMember(Element member) {
-    if (member == null) {
-      return null;
-    }
-    ClassElement classElement =
-        member.getAncestor((element) => element is ClassElement);
-    if (classElement == null) {
-      return null;
-    }
+    ClassElement classElement = member.enclosingElement;
     String name = member.name;
     ClassElement superclass = classElement.supertype?.element;
     Set<ClassElement> visitedClasses = new Set<ClassElement>();
@@ -6082,7 +6116,7 @@
       return identical(parent.constructorName, identifier);
     }
     if (parent is CommentReference) {
-      return parent.newKeyword != null;
+      return true;
     }
     if (parent is ConstructorName) {
       return identical(parent.name, identifier);
@@ -6349,47 +6383,45 @@
       .firstWhere((ElementAnnotation e) => e.isRequired, orElse: () => null);
 }
 
-class _HasTypedefSelfReferenceVisitor
-    extends GeneralizingElementVisitor<Object> {
+class _HasTypedefSelfReferenceVisitor extends GeneralizingElementVisitor<void> {
   final GenericFunctionTypeElement element;
   bool hasSelfReference = false;
 
   _HasTypedefSelfReferenceVisitor(this.element);
 
   @override
-  Object visitClassElement(ClassElement element) {
+  void visitClassElement(ClassElement element) {
     // Typedefs are allowed to reference themselves via classes.
-    return null;
   }
 
   @override
-  Object visitFunctionElement(FunctionElement element) {
+  void visitFunctionElement(FunctionElement element) {
     _addTypeToCheck(element.returnType);
-    return super.visitFunctionElement(element);
+    super.visitFunctionElement(element);
   }
 
   @override
-  Object visitFunctionTypeAliasElement(FunctionTypeAliasElement element) {
+  void visitFunctionTypeAliasElement(FunctionTypeAliasElement element) {
     _addTypeToCheck(element.returnType);
-    return super.visitFunctionTypeAliasElement(element);
+    super.visitFunctionTypeAliasElement(element);
   }
 
   @override
-  Object visitGenericFunctionTypeElement(GenericFunctionTypeElement element) {
+  void visitGenericFunctionTypeElement(GenericFunctionTypeElement element) {
     _addTypeToCheck(element.returnType);
-    return super.visitGenericFunctionTypeElement(element);
+    super.visitGenericFunctionTypeElement(element);
   }
 
   @override
-  Object visitParameterElement(ParameterElement element) {
+  void visitParameterElement(ParameterElement element) {
     _addTypeToCheck(element.type);
-    return super.visitParameterElement(element);
+    super.visitParameterElement(element);
   }
 
   @override
-  Object visitTypeParameterElement(TypeParameterElement element) {
+  void visitTypeParameterElement(TypeParameterElement element) {
     _addTypeToCheck(element.bound);
-    return super.visitTypeParameterElement(element);
+    super.visitTypeParameterElement(element);
   }
 
   void _addTypeToCheck(DartType type) {
diff --git a/pkg/analyzer/lib/src/generated/package.dart b/pkg/analyzer/lib/src/generated/package.dart
deleted file mode 100644
index fba626f..0000000
--- a/pkg/analyzer/lib/src/generated/package.dart
+++ /dev/null
@@ -1,241 +0,0 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'dart:collection';
-
-import 'package:analyzer/exception/exception.dart';
-import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/context/builder.dart';
-import 'package:analyzer/src/file_system/file_system.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/sdk.dart';
-import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer/src/generated/utilities_general.dart';
-import 'package:analyzer/src/source/package_map_resolver.dart';
-import 'package:package_config/packages.dart';
-import 'package:yaml/yaml.dart';
-
-/**
- * Traverses the package structure to determine the transitive dependencies for
- * a given package.
- */
-class DependencyFinder {
-  /**
-   * The name of the pubspec.yaml file.
-   */
-  static const String pubspecName = 'pubspec.yaml';
-
-  /**
-   * The resource provider used to access the file system.
-   */
-  final ResourceProvider resourceProvider;
-
-  /**
-   * A table mapping the absolute paths of packages to a list of the names of
-   * the packages on which those packages depend.
-   */
-  final Map<String, List<String>> dependencyMap =
-      new HashMap<String, List<String>>();
-
-  /**
-   * Initialize a newly created dependency finder to use the given
-   * [resourceProvider] to access the file system.
-   */
-  DependencyFinder(this.resourceProvider);
-
-  /**
-   * Return a sorted list of the directories containing all of the packages on
-   * which the package at the given [packagePath] depends. The [packageMap]
-   * maps the names of packages to the directories in which they are contained.
-   *
-   * Throws an [AnalysisException] if any of the packages are missing their
-   * 'pubspec.yaml' file.
-   */
-  List<String> transitiveDependenciesFor(
-      Map<String, List<Folder>> packageMap, String packagePath) {
-    Set<String> processedPackages = new HashSet<String>();
-    Set<String> processedPaths = new HashSet<String>();
-    void process(String packageName) {
-      if (processedPackages.add(packageName)) {
-        List<Folder> folderList = packageMap[packageName];
-        if (folderList == null || folderList.isEmpty) {
-          throw new StateError('No mapping for package "$packageName"');
-        }
-        String packagePath = folderList[0].path;
-        processedPaths.add(packagePath);
-        List<String> dependencies = _dependenciesFor(packagePath);
-        for (String dependency in dependencies) {
-          process(dependency);
-        }
-      }
-    }
-
-    List<String> dependencies = _dependenciesFor(packagePath);
-    dependencies.forEach(process);
-    processedPaths.remove(packagePath);
-    List<String> transitiveDependencies = processedPaths.toList();
-    transitiveDependencies.sort();
-    return transitiveDependencies;
-  }
-
-  /**
-   * Add to the given set of [dependecies] all of the package names used as keys
-   * in the given [yamlMap].
-   */
-  void _collectDependencies(HashSet<String> dependencies, YamlMap yamlMap) {
-    if (yamlMap is Map) {
-      for (var key in yamlMap.keys) {
-        if (key is String) {
-          dependencies.add(key);
-        }
-      }
-    }
-  }
-
-  /**
-   * Return a list of the names of the packages on which the package at the
-   * [packagePath] depends.
-   */
-  List<String> _dependenciesFor(String packagePath) {
-    return dependencyMap.putIfAbsent(packagePath, () {
-      Set<String> dependencies = new HashSet<String>();
-      YamlNode yamlNode = _readPubspec(packagePath);
-      if (yamlNode is YamlMap) {
-        _collectDependencies(dependencies, yamlNode['dependencies']);
-      }
-      return dependencies.toList();
-    });
-  }
-
-  /**
-   * Read the content of the pubspec file in the directory at the given
-   * [directoryPath]. Return `null` if the file does not exist, cannot be read,
-   * or has content that is not valid YAML.
-   */
-  YamlNode _readPubspec(String directoryPath) {
-    try {
-      File yamlFile = resourceProvider
-          .getFolder(directoryPath)
-          .getChildAssumingFile(pubspecName);
-      String yamlContent = yamlFile.readAsStringSync();
-      return loadYamlNode(yamlContent);
-    } catch (exception, stackTrace) {
-      throw new AnalysisException('Missing $pubspecName in $directoryPath',
-          new CaughtException(exception, stackTrace));
-    }
-  }
-}
-
-/**
- * A description of the context in which a package will be analyzed.
- */
-class PackageDescription {
-  /**
-   * The id of the package being described. The id encodes the actual locations
-   * of the package itself and all of the packages on which it depends.
-   */
-  final String id;
-
-  /**
-   * The SDK against which the package will be analyzed.
-   */
-  final DartSdk sdk;
-
-  /**
-   * The analysis options that will be used when analyzing the package.
-   */
-  final AnalysisOptions options;
-
-  /**
-   * Initialize a newly create package description to describe the package with
-   * the given [id] that is being analyzed against the given [sdk] using the
-   * given [options].
-   */
-  PackageDescription(this.id, this.sdk, this.options);
-
-  @override
-  int get hashCode {
-    int hashCode = 0;
-    for (int value in options.signature) {
-      hashCode = JenkinsSmiHash.combine(hashCode, value);
-    }
-    hashCode = JenkinsSmiHash.combine(hashCode, id.hashCode);
-    hashCode = JenkinsSmiHash.combine(hashCode, sdk.hashCode);
-    return JenkinsSmiHash.finish(hashCode);
-  }
-
-  @override
-  bool operator ==(Object other) {
-    return other is PackageDescription &&
-        other.sdk == sdk &&
-        AnalysisOptions.signaturesEqual(
-            other.options.signature, options.signature) &&
-        other.id == id;
-  }
-}
-
-/**
- * Manages the contexts in which each package is analyzed.
- */
-class PackageManager {
-  /**
-   * The resource provider used to access the file system.
-   */
-  final ResourceProvider resourceProvider;
-
-  /**
-   * A table mapping the id's of packages to the context in which the package is
-   * analyzed.
-   */
-  final Map<PackageDescription, AnalysisContext> contextMap =
-      new HashMap<PackageDescription, AnalysisContext>();
-
-  /**
-   * Initialize a newly created package manager.
-   */
-  PackageManager(this.resourceProvider);
-
-  /**
-   * Return the context in which the package at the given [packagePath] should
-   * be analyzed when the given [packages] object is used to resolve package
-   * names, the given [resolver] will be used to resolve 'dart:' URI's, and the
-   * given [options] will control the analysis.
-   */
-  AnalysisContext getContext(String packagePath, Packages packages,
-      DartUriResolver resolver, AnalysisOptions options) {
-    DartSdk sdk = resolver.dartSdk;
-    Map<String, List<Folder>> packageMap =
-        new ContextBuilder(resourceProvider, null, null)
-            .convertPackagesToMap(packages);
-    PackageDescription description =
-        new PackageDescription(_buildId(packagePath, packageMap), sdk, options);
-    return contextMap.putIfAbsent(description, () {
-      AnalysisContext context = AnalysisEngine.instance.createAnalysisContext();
-      context.sourceFactory = new SourceFactory(<UriResolver>[
-        resolver,
-        new PackageMapUriResolver(resourceProvider, packageMap),
-        new ResourceUriResolver(resourceProvider)
-      ], packages, resourceProvider);
-      context.analysisOptions = options;
-      return context;
-    });
-  }
-
-  /**
-   * Return the id associated with the package at the given [packagePath] when
-   * the given [packageMap] is used to resolve package names.
-   */
-  String _buildId(String packagePath, Map<String, List<Folder>> packageMap) {
-    DependencyFinder finder = new DependencyFinder(resourceProvider);
-    List<String> dependencies =
-        finder.transitiveDependenciesFor(packageMap, packagePath);
-    StringBuffer buffer = new StringBuffer();
-    buffer.write(packagePath);
-    for (String dependency in dependencies) {
-      buffer.write(';');
-      buffer.write(dependency);
-    }
-    return buffer.toString();
-  }
-}
diff --git a/pkg/analyzer/lib/src/generated/parser.dart b/pkg/analyzer/lib/src/generated/parser.dart
index dcaf2a5..4598bdf 100644
--- a/pkg/analyzer/lib/src/generated/parser.dart
+++ b/pkg/analyzer/lib/src/generated/parser.dart
@@ -35,101 +35,71 @@
 
 part 'parser_fasta.dart';
 
-/**
- * A simple data-holder for a method that needs to return multiple values.
- */
+/// Whether set literal parsing is currently enabled by default.
+/// TODO(paulberry): once we have a shared source of truth about this
+/// information, hook this constant up to it.  (See phase 0 of
+/// https://github.com/dart-lang/language/issues/60)
+const bool enableSetLiteralsDefault = false;
+
+/// A simple data-holder for a method that needs to return multiple values.
 class CommentAndMetadata {
-  /**
-   * The documentation comment that was parsed, or `null` if none was given.
-   */
+  /// The documentation comment that was parsed, or `null` if none was given.
   final Comment comment;
 
-  /**
-   * The metadata that was parsed, or `null` if none was given.
-   */
+  /// The metadata that was parsed, or `null` if none was given.
   final List<Annotation> metadata;
 
-  /**
-   * Initialize a newly created holder with the given [comment] and [metadata].
-   */
+  /// Initialize a newly created holder with the given [comment] and [metadata].
   CommentAndMetadata(this.comment, this.metadata);
 
-  /**
-   * Return `true` if some metadata was parsed.
-   */
+  /// Return `true` if some metadata was parsed.
   bool get hasMetadata => metadata != null && metadata.isNotEmpty;
 }
 
-/**
- * A simple data-holder for a method that needs to return multiple values.
- */
+/// A simple data-holder for a method that needs to return multiple values.
 class FinalConstVarOrType {
-  /**
-   * The 'final', 'const' or 'var' keyword, or `null` if none was given.
-   */
+  /// The 'final', 'const' or 'var' keyword, or `null` if none was given.
   final Token keyword;
 
-  /**
-   * The type, or `null` if no type was specified.
-   */
+  /// The type, or `null` if no type was specified.
   final TypeAnnotation type;
 
-  /**
-   * Initialize a newly created holder with the given [keyword] and [type].
-   */
+  /// Initialize a newly created holder with the given [keyword] and [type].
   FinalConstVarOrType(this.keyword, this.type);
 }
 
-/**
- * A simple data-holder for a method that needs to return multiple values.
- */
+/// A simple data-holder for a method that needs to return multiple values.
 class Modifiers {
-  /**
-   * The token representing the keyword 'abstract', or `null` if the keyword was
-   * not found.
-   */
+  /// The token representing the keyword 'abstract', or `null` if the keyword
+  /// was not found.
   Token abstractKeyword;
 
-  /**
-   * The token representing the keyword 'const', or `null` if the keyword was
-   * not found.
-   */
+  /// The token representing the keyword 'const', or `null` if the keyword was
+  /// not found.
   Token constKeyword;
 
-  /**
-   * The token representing the keyword 'covariant', or `null` if the keyword
-   * was not found.
-   */
+  /// The token representing the keyword 'covariant', or `null` if the keyword
+  /// was not found.
   Token covariantKeyword;
 
-  /**
-   * The token representing the keyword 'external', or `null` if the keyword was
-   * not found.
-   */
+  /// The token representing the keyword 'external', or `null` if the keyword
+  /// was not found.
   Token externalKeyword;
 
-  /**
-   * The token representing the keyword 'factory', or `null` if the keyword was
-   * not found.
-   */
+  /// The token representing the keyword 'factory', or `null` if the keyword was
+  /// not found.
   Token factoryKeyword;
 
-  /**
-   * The token representing the keyword 'final', or `null` if the keyword was
-   * not found.
-   */
+  /// The token representing the keyword 'final', or `null` if the keyword was
+  /// not found.
   Token finalKeyword;
 
-  /**
-   * The token representing the keyword 'static', or `null` if the keyword was
-   * not found.
-   */
+  /// The token representing the keyword 'static', or `null` if the keyword was
+  /// not found.
   Token staticKeyword;
 
-  /**
-   * The token representing the keyword 'var', or `null` if the keyword was not
-   * found.
-   */
+  /// The token representing the keyword 'var', or `null` if the keyword was not
+  /// found.
   Token varKeyword;
 
   @override
@@ -145,11 +115,9 @@
     return buffer.toString();
   }
 
-  /**
-   * If the given [keyword] is not `null`, append it to the given [builder],
-   * prefixing it with a space if [needsSpace] is `true`. Return `true` if
-   * subsequent keywords need to be prefixed with a space.
-   */
+  /// If the given [keyword] is not `null`, append it to the given [builder],
+  /// prefixing it with a space if [needsSpace] is `true`. Return `true` if
+  /// subsequent keywords need to be prefixed with a space.
   bool _appendKeyword(StringBuffer buffer, bool needsSpace, Token keyword) {
     if (keyword != null) {
       if (needsSpace) {
@@ -162,9 +130,7 @@
   }
 }
 
-/**
- * A parser used to parse tokens into an AST structure.
- */
+/// A parser used to parse tokens into an AST structure.
 class Parser {
   static String ASYNC = Keyword.ASYNC.lexeme;
 
@@ -180,91 +146,61 @@
 
   static const int _MAX_TREE_DEPTH = 300;
 
-  /**
-   * A flag indicating whether the analyzer [Parser] factory method
-   * will return a fasta based parser or an analyzer based parser.
-   */
+  /// A flag indicating whether the analyzer [Parser] factory method
+  /// will return a fasta based parser or an analyzer based parser.
   static const bool useFasta =
       const bool.fromEnvironment("useFastaParser", defaultValue: true);
 
-  /**
-   * The source being parsed.
-   */
+  /// The source being parsed.
   final Source _source;
 
-  /**
-   * The error listener that will be informed of any errors that are found
-   * during the parse.
-   */
+  /// The error listener that will be informed of any errors that are found
+  /// during the parse.
   final AnalysisErrorListener _errorListener;
 
-  /**
-   * An [_errorListener] lock, if more than `0`, then errors are not reported.
-   */
+  /// An [_errorListener] lock, if more than `0`, then errors are not reported.
   int _errorListenerLock = 0;
 
-  /**
-   * A flag indicating whether the parser should parse instance creation
-   * expressions that lack either the `new` or `const` keyword.
-   */
+  /// A flag indicating whether the parser should parse instance creation
+  /// expressions that lack either the `new` or `const` keyword.
   bool _enableOptionalNewAndConst = true;
 
-  /**
-   * A flag indicating whether parser is to parse function bodies.
-   */
+  /// A flag indicating whether parser is to parse function bodies.
   bool _parseFunctionBodies = true;
 
-  /**
-   * The next token to be parsed.
-   */
+  /// The next token to be parsed.
   Token _currentToken;
 
-  /**
-   * The depth of the current AST. When this depth is too high, so we're at the
-   * risk of overflowing the stack, we stop parsing and report an error.
-   */
+  /// The depth of the current AST. When this depth is too high, so we're at the
+  /// risk of overflowing the stack, we stop parsing and report an error.
   int _treeDepth = 0;
 
-  /**
-   * A flag indicating whether the parser is currently in a function body marked
-   * as being 'async'.
-   */
+  /// A flag indicating whether the parser is currently in a function body
+  /// marked as being 'async'.
   bool _inAsync = false;
 
-  /**
-   * A flag indicating whether the parser is currently in a function body marked
-   * (by a star) as being a generator.
-   */
+  /// A flag indicating whether the parser is currently in a function body
+  ///  marked(by a star) as being a generator.
   bool _inGenerator = false;
 
-  /**
-   * A flag indicating whether the parser is currently in the body of a loop.
-   */
+  /// A flag indicating whether the parser is currently in the body of a loop.
   bool _inLoop = false;
 
-  /**
-   * A flag indicating whether the parser is currently in a switch statement.
-   */
+  /// A flag indicating whether the parser is currently in a switch statement.
   bool _inSwitch = false;
 
-  /**
-   * A flag indicating whether the parser is currently in a constructor field
-   * initializer, with no intervening parentheses, braces, or brackets.
-   */
+  /// A flag indicating whether the parser is currently in a constructor field
+  /// initializer, with no intervening parentheses, braces, or brackets.
   bool _inInitializer = false;
 
-  /**
-   * A flag indicating whether the parser is to parse generic method syntax.
-   */
+  /// A flag indicating whether the parser is to parse generic method syntax.
   @deprecated
   bool parseGenericMethods = false;
 
   bool allowNativeClause;
 
-  /**
-   * Initialize a newly created parser to parse tokens in the given [_source]
-   * and to report any errors that are found to the given [_errorListener].
-   */
+  /// Initialize a newly created parser to parse tokens in the given [_source]
+  /// and to report any errors that are found to the given [_errorListener].
   factory Parser(Source source, AnalysisErrorListener errorListener,
       {bool useFasta}) {
     if (useFasta ?? Parser.useFasta) {
@@ -276,65 +212,55 @@
 
   Parser.withoutFasta(this._source, this._errorListener);
 
-  /**
-   * Return the current token.
-   */
+  /// Return the current token.
   Token get currentToken => _currentToken;
 
-  /**
-   * Set the token with which the parse is to begin to the given [token].
-   */
+  /// Set the token with which the parse is to begin to the given [token].
   void set currentToken(Token token) {
     this._currentToken = token;
   }
 
-  /**
-   * Return `true` if the parser is to parse asserts in the initializer list of
-   * a constructor.
-   */
+  /// Return `true` if the parser is to parse asserts in the initializer list of
+  /// a constructor.
   @deprecated
   bool get enableAssertInitializer => true;
 
-  /**
-   * Set whether the parser is to parse asserts in the initializer list of a
-   * constructor to match the given [enable] flag.
-   */
+  /// Set whether the parser is to parse asserts in the initializer list of a
+  /// constructor to match the given [enable] flag.
   @deprecated
   void set enableAssertInitializer(bool enable) {}
 
-  /**
-   * Return `true` if the parser should parse instance creation expressions that
-   * lack either the `new` or `const` keyword.
-   */
+  /// Return `true` if the parser should parse instance creation expressions
+  /// that lack either the `new` or `const` keyword.
   bool get enableOptionalNewAndConst => _enableOptionalNewAndConst;
 
-  /**
-   * Set whether the parser should parse instance creation expressions that lack
-   * either the `new` or `const` keyword.
-   */
+  /// Set whether the parser should parse instance creation expressions that
+  /// lack either the `new` or `const` keyword.
   void set enableOptionalNewAndConst(bool enable) {
     _enableOptionalNewAndConst = enable;
   }
 
-  /**
-   * Return `true` if the parser is to allow URI's in part-of directives.
-   */
+  /// Enables or disables parsing of set literals.
+  void set enableSetLiterals(bool value) {
+    if (value) {
+      throw new UnimplementedError(
+          'set-literal experiment not supported by analyzer parser');
+    }
+  }
+
+  /// Return `true` if the parser is to allow URI's in part-of directives.
   @deprecated
   bool get enableUriInPartOf => true;
 
-  /**
-   * Set whether the parser is to allow URI's in part-of directives to the given
-   * [enable] flag.
-   */
+  /// Set whether the parser is to allow URI's in part-of directives to the
+  /// given [enable] flag.
   @deprecated
   void set enableUriInPartOf(bool enable) {}
 
-  /**
-   * Return `true` if the current token is the first token of a return type that
-   * is followed by an identifier, possibly followed by a list of type
-   * parameters, followed by a left-parenthesis. This is used by
-   * [parseTypeAlias] to determine whether or not to parse a return type.
-   */
+  /// Return `true` if the current token is the first token of a return type
+  /// that is followed by an identifier, possibly followed by a list of type
+  /// parameters, followed by a left-parenthesis. This is used by
+  /// [parseTypeAlias] to determine whether or not to parse a return type.
   bool get hasReturnTypeInTypeAlias {
     // TODO(brianwilkerson) This is too expensive as implemented and needs to be
     // re-implemented or removed.
@@ -345,11 +271,9 @@
     return _tokenMatchesIdentifier(next);
   }
 
-  /**
-   * Set whether the parser is to parse the async support.
-   *
-   * Support for removing the 'async' library has been removed.
-   */
+  /// Set whether the parser is to parse the async support.
+  ///
+  /// Support for removing the 'async' library has been removed.
   @deprecated
   void set parseAsync(bool parseAsync) {}
 
@@ -359,19 +283,15 @@
   @deprecated
   void set parseConditionalDirectives(bool value) {}
 
-  /**
-   * Set whether parser is to parse function bodies.
-   */
+  /// Set whether parser is to parse function bodies.
   void set parseFunctionBodies(bool parseFunctionBodies) {
     this._parseFunctionBodies = parseFunctionBodies;
   }
 
-  /**
-   * Return the content of a string with the given literal representation. The
-   * [lexeme] is the literal representation of the string. The flag [isFirst] is
-   * `true` if this is the first token in a string literal. The flag [isLast] is
-   * `true` if this is the last token in a string literal.
-   */
+  /// Return the content of a string with the given literal representation. The
+  /// [lexeme] is the literal representation of the string. The flag [isFirst]
+  /// is `true` if this is the first token in a string literal. The flag
+  /// [isLast] is `true` if this is the last token in a string literal.
   String computeStringValue(String lexeme, bool isFirst, bool isLast) {
     StringLexemeHelper helper = new StringLexemeHelper(lexeme, isFirst, isLast);
     int start = helper.start;
@@ -394,9 +314,7 @@
     return buffer.toString();
   }
 
-  /**
-   * Return a synthetic identifier.
-   */
+  /// Return a synthetic identifier.
   SimpleIdentifier createSyntheticIdentifier({bool isDeclaration: false}) {
     Token syntheticToken;
     if (_currentToken.type.isKeyword) {
@@ -414,26 +332,21 @@
         isDeclaration: isDeclaration);
   }
 
-  /**
-   * Return a synthetic string literal.
-   */
+  /// Return a synthetic string literal.
   SimpleStringLiteral createSyntheticStringLiteral() => astFactory
       .simpleStringLiteral(_createSyntheticToken(TokenType.STRING), "");
 
-  /**
-   * Advance to the next token in the token stream, making it the new current
-   * token and return the token that was current before this method was invoked.
-   */
+  /// Advance to the next token in the token stream, making it the new current
+  /// token and return the token that was current before this method was
+  /// invoked.
   Token getAndAdvance() {
     Token token = _currentToken;
     _currentToken = _currentToken.next;
     return token;
   }
 
-  /**
-   * Return `true` if the current token appears to be the beginning of a
-   * function declaration.
-   */
+  /// Return `true` if the current token appears to be the beginning of a
+  /// function declaration.
   bool isFunctionDeclaration() {
     Keyword keyword = _currentToken.keyword;
     Token afterReturnType = skipTypeWithoutFunction(_currentToken);
@@ -478,10 +391,8 @@
     return false;
   }
 
-  /**
-   * Return `true` if the given [token] appears to be the beginning of a
-   * function expression.
-   */
+  /// Return `true` if the given [token] appears to be the beginning of a
+  /// function expression.
   bool isFunctionExpression(Token token) {
     // Function expressions aren't allowed in initializer lists.
     if (_inInitializer) {
@@ -503,30 +414,28 @@
     return lexeme == ASYNC || lexeme == SYNC;
   }
 
-  /**
-   * Return `true` if the current token is the first token in an initialized
-   * variable declaration rather than an expression. This method assumes that we
-   * have already skipped past any metadata that might be associated with the
-   * declaration.
-   *
-   *     initializedVariableDeclaration ::=
-   *         declaredIdentifier ('=' expression)? (',' initializedIdentifier)*
-   *
-   *     declaredIdentifier ::=
-   *         metadata finalConstVarOrType identifier
-   *
-   *     finalConstVarOrType ::=
-   *         'final' type?
-   *       | 'const' type?
-   *       | 'var'
-   *       | type
-   *
-   *     type ::=
-   *         qualified typeArguments?
-   *
-   *     initializedIdentifier ::=
-   *         identifier ('=' expression)?
-   */
+  /// Return `true` if the current token is the first token in an initialized
+  /// variable declaration rather than an expression. This method assumes that
+  /// we have already skipped past any metadata that might be associated with
+  /// the declaration.
+  ///
+  ///     initializedVariableDeclaration ::=
+  ///         declaredIdentifier ('=' expression)? (',' initializedIdentifier)*
+  ///
+  ///     declaredIdentifier ::=
+  ///         metadata finalConstVarOrType identifier
+  ///
+  ///     finalConstVarOrType ::=
+  ///         'final' type?
+  ///       | 'const' type?
+  ///       | 'var'
+  ///       | type
+  ///
+  ///     type ::=
+  ///         qualified typeArguments?
+  ///
+  ///     initializedIdentifier ::=
+  ///         identifier ('=' expression)?
   bool isInitializedVariableDeclaration() {
     Keyword keyword = _currentToken.keyword;
     if (keyword == Keyword.FINAL ||
@@ -601,10 +510,8 @@
     return false;
   }
 
-  /**
-   * Return `true` if the current token appears to be the beginning of a switch
-   * member.
-   */
+  /// Return `true` if the current token appears to be the beginning of a switch
+  /// member.
   bool isSwitchMember() {
     Token token = _currentToken;
     while (_tokenMatches(token, TokenType.IDENTIFIER) &&
@@ -615,14 +522,12 @@
     return keyword == Keyword.CASE || keyword == Keyword.DEFAULT;
   }
 
-  /**
-   * Parse an additive expression. Return the additive expression that was
-   * parsed.
-   *
-   *     additiveExpression ::=
-   *         multiplicativeExpression (additiveOperator multiplicativeExpression)*
-   *       | 'super' (additiveOperator multiplicativeExpression)+
-   */
+  /// Parse an additive expression. Return the additive expression that was
+  /// parsed.
+  ///
+  ///     additiveExpression ::=
+  ///         multiplicativeExpression (additiveOperator multiplicativeExpression)*
+  ///       | 'super' (additiveOperator multiplicativeExpression)+
   Expression parseAdditiveExpression() {
     Expression expression;
     if (_currentToken.keyword == Keyword.SUPER &&
@@ -638,14 +543,12 @@
     return expression;
   }
 
-  /**
-   * Parse an annotation. Return the annotation that was parsed.
-   *
-   * This method assumes that the current token matches [TokenType.AT].
-   *
-   *     annotation ::=
-   *         '@' qualified ('.' identifier)? arguments?
-   */
+  /// Parse an annotation. Return the annotation that was parsed.
+  ///
+  /// This method assumes that the current token matches [TokenType.AT].
+  ///
+  ///     annotation ::=
+  ///         '@' qualified ('.' identifier)? arguments?
   Annotation parseAnnotation() {
     Token atSign = getAndAdvance();
     Identifier name = parsePrefixedIdentifier();
@@ -663,16 +566,14 @@
         atSign, name, period, constructorName, arguments);
   }
 
-  /**
-   * Parse an argument. Return the argument that was parsed.
-   *
-   *     argument ::=
-   *         namedArgument
-   *       | expression
-   *
-   *     namedArgument ::=
-   *         label expression
-   */
+  /// Parse an argument. Return the argument that was parsed.
+  ///
+  ///     argument ::=
+  ///         namedArgument
+  ///       | expression
+  ///
+  ///     namedArgument ::=
+  ///         label expression
   Expression parseArgument() {
     // TODO(brianwilkerson) Consider returning a wrapper indicating whether the
     // expression is a named expression in order to remove the 'is' check in
@@ -688,29 +589,25 @@
     }
   }
 
-  /**
-   * Parse a list of arguments. Return the argument list that was parsed.
-   *
-   * This method assumes that the current token matches [TokenType.OPEN_PAREN].
-   *
-   *     arguments ::=
-   *         '(' argumentList? ')'
-   *
-   *     argumentList ::=
-   *         namedArgument (',' namedArgument)*
-   *       | expressionList (',' namedArgument)*
-   */
+  /// Parse a list of arguments. Return the argument list that was parsed.
+  ///
+  /// This method assumes that the current token matches [TokenType.OPEN_PAREN].
+  ///
+  ///     arguments ::=
+  ///         '(' argumentList? ')'
+  ///
+  ///     argumentList ::=
+  ///         namedArgument (',' namedArgument)*
+  ///       | expressionList (',' namedArgument)*
   ArgumentList parseArgumentList() {
     Token leftParenthesis = getAndAdvance();
     if (_matches(TokenType.CLOSE_PAREN)) {
       return astFactory.argumentList(leftParenthesis, null, getAndAdvance());
     }
 
-    /**
-     * Return `true` if the parser appears to be at the beginning of an argument
-     * even though there was no comma. This is a special case of the more
-     * general recovery technique described below.
-     */
+    /// Return `true` if the parser appears to be at the beginning of an
+    /// argument even though there was no comma. This is a special case of the
+    /// more general recovery technique described below.
     bool isLikelyMissingComma() {
       if (_matchesIdentifier() &&
           _tokenMatches(_currentToken.next, TokenType.COLON) &&
@@ -770,14 +667,12 @@
     }
   }
 
-  /**
-   * Parse an assert statement. Return the assert statement.
-   *
-   * This method assumes that the current token matches `Keyword.ASSERT`.
-   *
-   *     assertStatement ::=
-   *         'assert' '(' expression [',' expression] ')' ';'
-   */
+  /// Parse an assert statement. Return the assert statement.
+  ///
+  /// This method assumes that the current token matches `Keyword.ASSERT`.
+  ///
+  ///     assertStatement ::=
+  ///         'assert' '(' expression [',' expression] ')' ';'
   AssertStatement parseAssertStatement() {
     Token keyword = getAndAdvance();
     Token leftParen = _expect(TokenType.OPEN_PAREN);
@@ -803,16 +698,14 @@
         keyword, leftParen, expression, comma, message, rightParen, semicolon);
   }
 
-  /**
-   * Parse an assignable expression. The [primaryAllowed] is `true` if the
-   * expression is allowed to be a primary without any assignable selector.
-   * Return the assignable expression that was parsed.
-   *
-   *     assignableExpression ::=
-   *         primary (arguments* assignableSelector)+
-   *       | 'super' unconditionalAssignableSelector
-   *       | identifier
-   */
+  /// Parse an assignable expression. The [primaryAllowed] is `true` if the
+  /// expression is allowed to be a primary without any assignable selector.
+  /// Return the assignable expression that was parsed.
+  ///
+  ///     assignableExpression ::=
+  ///         primary (arguments* assignableSelector)+
+  ///       | 'super' unconditionalAssignableSelector
+  ///       | identifier
   Expression parseAssignableExpression(bool primaryAllowed) {
     //
     // A primary expression can start with an identifier. We resolve the
@@ -862,21 +755,19 @@
     }
   }
 
-  /**
-   * Parse an assignable selector. The [prefix] is the expression preceding the
-   * selector. The [optional] is `true` if the selector is optional. Return the
-   * assignable selector that was parsed, or the original prefix if there was no
-   * assignable selector.  If [allowConditional] is false, then the '?.'
-   * operator will still be parsed, but a parse error will be generated.
-   *
-   *     unconditionalAssignableSelector ::=
-   *         '[' expression ']'
-   *       | '.' identifier
-   *
-   *     assignableSelector ::=
-   *         unconditionalAssignableSelector
-   *       | '?.' identifier
-   */
+  /// Parse an assignable selector. The [prefix] is the expression preceding the
+  /// selector. The [optional] is `true` if the selector is optional. Return the
+  /// assignable selector that was parsed, or the original prefix if there was
+  /// no assignable selector.  If [allowConditional] is false, then the '?.'
+  /// operator will still be parsed, but a parse error will be generated.
+  ///
+  ///     unconditionalAssignableSelector ::=
+  ///         '[' expression ']'
+  ///       | '.' identifier
+  ///
+  ///     assignableSelector ::=
+  ///         unconditionalAssignableSelector
+  ///       | '?.' identifier
   Expression parseAssignableSelector(Expression prefix, bool optional,
       {bool allowConditional: true}) {
     TokenType type = _currentToken.type;
@@ -921,28 +812,24 @@
     }
   }
 
-  /**
-   * Parse a await expression. Return the await expression that was parsed.
-   *
-   * This method assumes that the current token matches `_AWAIT`.
-   *
-   *     awaitExpression ::=
-   *         'await' unaryExpression
-   */
+  /// Parse a await expression. Return the await expression that was parsed.
+  ///
+  /// This method assumes that the current token matches `_AWAIT`.
+  ///
+  ///     awaitExpression ::=
+  ///         'await' unaryExpression
   AwaitExpression parseAwaitExpression() {
     Token awaitToken = getAndAdvance();
     Expression expression = parseUnaryExpression();
     return astFactory.awaitExpression(awaitToken, expression);
   }
 
-  /**
-   * Parse a bitwise and expression. Return the bitwise and expression that was
-   * parsed.
-   *
-   *     bitwiseAndExpression ::=
-   *         shiftExpression ('&' shiftExpression)*
-   *       | 'super' ('&' shiftExpression)+
-   */
+  /// Parse a bitwise and expression. Return the bitwise and expression that was
+  /// parsed.
+  ///
+  ///     bitwiseAndExpression ::=
+  ///         shiftExpression ('&' shiftExpression)*
+  ///       | 'super' ('&' shiftExpression)+
   Expression parseBitwiseAndExpression() {
     Expression expression;
     if (_currentToken.keyword == Keyword.SUPER &&
@@ -958,14 +845,12 @@
     return expression;
   }
 
-  /**
-   * Parse a bitwise or expression. Return the bitwise or expression that was
-   * parsed.
-   *
-   *     bitwiseOrExpression ::=
-   *         bitwiseXorExpression ('|' bitwiseXorExpression)*
-   *       | 'super' ('|' bitwiseXorExpression)+
-   */
+  /// Parse a bitwise or expression. Return the bitwise or expression that was
+  /// parsed.
+  ///
+  ///     bitwiseOrExpression ::=
+  ///         bitwiseXorExpression ('|' bitwiseXorExpression)*
+  ///       | 'super' ('|' bitwiseXorExpression)+
   Expression parseBitwiseOrExpression() {
     Expression expression;
     if (_currentToken.keyword == Keyword.SUPER &&
@@ -981,14 +866,12 @@
     return expression;
   }
 
-  /**
-   * Parse a bitwise exclusive-or expression. Return the bitwise exclusive-or
-   * expression that was parsed.
-   *
-   *     bitwiseXorExpression ::=
-   *         bitwiseAndExpression ('^' bitwiseAndExpression)*
-   *       | 'super' ('^' bitwiseAndExpression)+
-   */
+  /// Parse a bitwise exclusive-or expression. Return the bitwise exclusive-or
+  /// expression that was parsed.
+  ///
+  ///     bitwiseXorExpression ::=
+  ///         bitwiseAndExpression ('^' bitwiseAndExpression)*
+  ///       | 'super' ('^' bitwiseAndExpression)+
   Expression parseBitwiseXorExpression() {
     Expression expression;
     if (_currentToken.keyword == Keyword.SUPER &&
@@ -1004,15 +887,13 @@
     return expression;
   }
 
-  /**
-   * Parse a block. Return the block that was parsed.
-   *
-   * This method assumes that the current token matches
-   * [TokenType.OPEN_CURLY_BRACKET].
-   *
-   *     block ::=
-   *         '{' statements '}'
-   */
+  /// Parse a block. Return the block that was parsed.
+  ///
+  /// This method assumes that the current token matches
+  /// [TokenType.OPEN_CURLY_BRACKET].
+  ///
+  ///     block ::=
+  ///         '{' statements '}'
   Block parseBlock() {
     bool isEndOfBlock() {
       TokenType type = _currentToken.type;
@@ -1042,14 +923,12 @@
     return astFactory.block(leftBracket, statements, rightBracket);
   }
 
-  /**
-   * Parse a break statement. Return the break statement that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.BREAK`.
-   *
-   *     breakStatement ::=
-   *         'break' identifier? ';'
-   */
+  /// Parse a break statement. Return the break statement that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.BREAK`.
+  ///
+  ///     breakStatement ::=
+  ///         'break' identifier? ';'
   Statement parseBreakStatement() {
     Token breakKeyword = getAndAdvance();
     SimpleIdentifier label = null;
@@ -1063,24 +942,22 @@
     return astFactory.breakStatement(breakKeyword, label, semicolon);
   }
 
-  /**
-   * Parse a cascade section. Return the expression representing the cascaded
-   * method invocation.
-   *
-   * This method assumes that the current token matches
-   * `TokenType.PERIOD_PERIOD`.
-   *
-   *     cascadeSection ::=
-   *         '..' (cascadeSelector typeArguments? arguments*)
-   *         (assignableSelector typeArguments? arguments*)* cascadeAssignment?
-   *
-   *     cascadeSelector ::=
-   *         '[' expression ']'
-   *       | identifier
-   *
-   *     cascadeAssignment ::=
-   *         assignmentOperator expressionWithoutCascade
-   */
+  /// Parse a cascade section. Return the expression representing the cascaded
+  /// method invocation.
+  ///
+  /// This method assumes that the current token matches
+  /// `TokenType.PERIOD_PERIOD`.
+  ///
+  ///     cascadeSection ::=
+  ///         '..' (cascadeSelector typeArguments? arguments*)
+  ///         (assignableSelector typeArguments? arguments*)* cascadeAssignment?
+  ///
+  ///     cascadeSelector ::=
+  ///         '[' expression ']'
+  ///       | identifier
+  ///
+  ///     cascadeAssignment ::=
+  ///         assignmentOperator expressionWithoutCascade
   Expression parseCascadeSection() {
     Token period = getAndAdvance();
     Expression expression = null;
@@ -1162,18 +1039,16 @@
     return expression;
   }
 
-  /**
-   * Parse a class declaration. The [commentAndMetadata] is the metadata to be
-   * associated with the member. The [abstractKeyword] is the token for the
-   * keyword 'abstract', or `null` if the keyword was not given. Return the
-   * class declaration that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.CLASS`.
-   *
-   *     classDeclaration ::=
-   *         metadata 'abstract'? 'class' name typeParameterList? (extendsClause withClause?)? implementsClause? '{' classMembers '}' |
-   *         metadata 'abstract'? 'class' mixinApplicationClass
-   */
+  /// Parse a class declaration. The [commentAndMetadata] is the metadata to be
+  /// associated with the member. The [abstractKeyword] is the token for the
+  /// keyword 'abstract', or `null` if the keyword was not given. Return the
+  /// class declaration that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.CLASS`.
+  ///
+  ///     classDeclaration ::=
+  ///         metadata 'abstract'? 'class' name typeParameterList? (extendsClause withClause?)? implementsClause? '{' classMembers '}' |
+  ///         metadata 'abstract'? 'class' mixinApplicationClass
   CompilationUnitMember parseClassDeclaration(
       CommentAndMetadata commentAndMetadata, Token abstractKeyword) {
     //
@@ -1292,15 +1167,13 @@
     return classDeclaration;
   }
 
-  /**
-   * Parse a class member. The [className] is the name of the class containing
-   * the member being parsed. Return the class member that was parsed, or `null`
-   * if what was found was not a valid class member.
-   *
-   *     classMemberDefinition ::=
-   *         declaration ';'
-   *       | methodSignature functionBody
-   */
+  /// Parse a class member. The [className] is the name of the class containing
+  /// the member being parsed. Return the class member that was parsed, or
+  /// `null` if what was found was not a valid class member.
+  ///
+  ///     classMemberDefinition ::=
+  ///         declaration ';'
+  ///       | methodSignature functionBody
   ClassMember parseClassMember(String className) {
     CommentAndMetadata commentAndMetadata = parseCommentAndMetadata();
     Modifiers modifiers = parseModifiers();
@@ -1648,14 +1521,12 @@
         type);
   }
 
-  /**
-   * Parse a single combinator. Return the combinator that was parsed, or `null`
-   * if no combinator is found.
-   *
-   *     combinator ::=
-   *         'show' identifier (',' identifier)*
-   *       | 'hide' identifier (',' identifier)*
-   */
+  /// Parse a single combinator. Return the combinator that was parsed, or
+  /// `null` if no combinator is found.
+  ///
+  ///     combinator ::=
+  ///         'show' identifier (',' identifier)*
+  ///       | 'hide' identifier (',' identifier)*
   Combinator parseCombinator() {
     if (_matchesKeyword(Keyword.SHOW)) {
       return astFactory.showCombinator(getAndAdvance(), parseIdentifierList());
@@ -1665,14 +1536,12 @@
     return null;
   }
 
-  /**
-   * Parse a list of combinators in a directive. Return the combinators that
-   * were parsed, or `null` if there are no combinators.
-   *
-   *     combinator ::=
-   *         'show' identifier (',' identifier)*
-   *       | 'hide' identifier (',' identifier)*
-   */
+  /// Parse a list of combinators in a directive. Return the combinators that
+  /// were parsed, or `null` if there are no combinators.
+  ///
+  ///     combinator ::=
+  ///         'show' identifier (',' identifier)*
+  ///       | 'hide' identifier (',' identifier)*
   List<Combinator> parseCombinators() {
     List<Combinator> combinators = null;
     while (true) {
@@ -1686,16 +1555,14 @@
     return combinators;
   }
 
-  /**
-   * Parse the documentation comment and metadata preceding a declaration. This
-   * method allows any number of documentation comments to occur before, after
-   * or between the metadata, but only returns the last (right-most)
-   * documentation comment that is found. Return the documentation comment and
-   * metadata that were parsed.
-   *
-   *     metadata ::=
-   *         annotation*
-   */
+  /// Parse the documentation comment and metadata preceding a declaration. This
+  /// method allows any number of documentation comments to occur before, after
+  /// or between the metadata, but only returns the last (right-most)
+  /// documentation comment that is found. Return the documentation comment and
+  /// metadata that were parsed.
+  ///
+  ///     metadata ::=
+  ///         annotation*
   CommentAndMetadata parseCommentAndMetadata() {
     // TODO(brianwilkerson) Consider making the creation of documentation
     // comments be lazy.
@@ -1713,16 +1580,14 @@
     return new CommentAndMetadata(parseDocumentationComment(tokens), metadata);
   }
 
-  /**
-   * Parse a comment reference from the source between square brackets. The
-   * [referenceSource] is the source occurring between the square brackets
-   * within a documentation comment. The [sourceOffset] is the offset of the
-   * first character of the reference source. Return the comment reference that
-   * was parsed, or `null` if no reference could be found.
-   *
-   *     commentReference ::=
-   *         'new'? prefixedIdentifier
-   */
+  /// Parse a comment reference from the source between square brackets. The
+  /// [referenceSource] is the source occurring between the square brackets
+  /// within a documentation comment. The [sourceOffset] is the offset of the
+  /// first character of the reference source. Return the comment reference that
+  /// was parsed, or `null` if no reference could be found.
+  ///
+  ///     commentReference ::=
+  ///         'new'? prefixedIdentifier
   CommentReference parseCommentReference(
       String referenceSource, int sourceOffset) {
     // TODO(brianwilkerson) The errors are not getting the right offset/length
@@ -1822,18 +1687,16 @@
     return null;
   }
 
-  /**
-   * Parse all of the comment references occurring in the given array of
-   * documentation comments. The [tokens] are the comment tokens representing
-   * the documentation comments to be parsed. Return the comment references that
-   * were parsed.
-   *
-   *     commentReference ::=
-   *         '[' 'new'? qualified ']' libraryReference?
-   *
-   *     libraryReference ::=
-   *          '(' stringLiteral ')'
-   */
+  /// Parse all of the comment references occurring in the given array of
+  /// documentation comments. The [tokens] are the comment tokens representing
+  /// the documentation comments to be parsed. Return the comment references
+  /// that were parsed.
+  ///
+  ///     commentReference ::=
+  ///         '[' 'new'? qualified ']' libraryReference?
+  ///
+  ///     libraryReference ::=
+  ///          '(' stringLiteral ')'
   List<CommentReference> parseCommentReferences(
       List<DocumentationCommentToken> tokens) {
     List<CommentReference> references = <CommentReference>[];
@@ -1904,32 +1767,28 @@
     return references;
   }
 
-  /**
-   * Parse a compilation unit, starting with the given [token]. Return the
-   * compilation unit that was parsed.
-   */
+  /// Parse a compilation unit, starting with the given [token]. Return the
+  /// compilation unit that was parsed.
   CompilationUnit parseCompilationUnit(Token token) {
     _currentToken = token;
     return parseCompilationUnit2();
   }
 
-  /**
-   * Parse a compilation unit. Return the compilation unit that was parsed.
-   *
-   * Specified:
-   *
-   *     compilationUnit ::=
-   *         scriptTag? directive* topLevelDeclaration*
-   *
-   * Actual:
-   *
-   *     compilationUnit ::=
-   *         scriptTag? topLevelElement*
-   *
-   *     topLevelElement ::=
-   *         directive
-   *       | topLevelDeclaration
-   */
+  /// Parse a compilation unit. Return the compilation unit that was parsed.
+  ///
+  /// Specified:
+  ///
+  ///     compilationUnit ::=
+  ///         scriptTag? directive* topLevelDeclaration*
+  ///
+  /// Actual:
+  ///
+  ///     compilationUnit ::=
+  ///         scriptTag? topLevelElement*
+  ///
+  ///     topLevelElement ::=
+  ///         directive
+  ///       | topLevelDeclaration
   CompilationUnit parseCompilationUnit2() {
     Token firstToken = _currentToken;
     ScriptTag scriptTag = null;
@@ -2075,23 +1934,21 @@
         firstToken, scriptTag, directives, declarations, _currentToken);
   }
 
-  /**
-   * Parse a compilation unit member. The [commentAndMetadata] is the metadata
-   * to be associated with the member. Return the compilation unit member that
-   * was parsed, or `null` if what was parsed could not be represented as a
-   * compilation unit member.
-   *
-   *     compilationUnitMember ::=
-   *         classDefinition
-   *       | functionTypeAlias
-   *       | external functionSignature
-   *       | external getterSignature
-   *       | external setterSignature
-   *       | functionSignature functionBody
-   *       | returnType? getOrSet identifier formalParameterList functionBody
-   *       | (final | const) type? staticFinalDeclarationList ';'
-   *       | variableDeclaration ';'
-   */
+  /// Parse a compilation unit member. The [commentAndMetadata] is the metadata
+  /// to be associated with the member. Return the compilation unit member that
+  /// was parsed, or `null` if what was parsed could not be represented as a
+  /// compilation unit member.
+  ///
+  ///     compilationUnitMember ::=
+  ///         classDefinition
+  ///       | functionTypeAlias
+  ///       | external functionSignature
+  ///       | external getterSignature
+  ///       | external setterSignature
+  ///       | functionSignature functionBody
+  ///       | returnType? getOrSet identifier formalParameterList functionBody
+  ///       | (final | const) type? staticFinalDeclarationList ';'
+  ///       | variableDeclaration ';'
   CompilationUnitMember parseCompilationUnitMember(
       CommentAndMetadata commentAndMetadata) {
     Modifiers modifiers = parseModifiers();
@@ -2290,13 +2147,11 @@
         _expect(TokenType.SEMICOLON));
   }
 
-  /**
-   * Parse a conditional expression. Return the conditional expression that was
-   * parsed.
-   *
-   *     conditionalExpression ::=
-   *         ifNullExpression ('?' expressionWithoutCascade ':' expressionWithoutCascade)?
-   */
+  /// Parse a conditional expression. Return the conditional expression that was
+  /// parsed.
+  ///
+  ///     conditionalExpression ::=
+  ///         ifNullExpression ('?' expressionWithoutCascade ':' expressionWithoutCascade)?
   Expression parseConditionalExpression() {
     Expression condition = parseIfNullExpression();
     if (_currentToken.type != TokenType.QUESTION) {
@@ -2310,20 +2165,18 @@
         condition, question, thenExpression, colon, elseExpression);
   }
 
-  /**
-   * Parse a configuration in either an import or export directive.
-   *
-   * This method assumes that the current token matches `Keyword.IF`.
-   *
-   *     configuration ::=
-   *         'if' '(' test ')' uri
-   *
-   *     test ::=
-   *         dottedName ('==' stringLiteral)?
-   *
-   *     dottedName ::=
-   *         identifier ('.' identifier)*
-   */
+  /// Parse a configuration in either an import or export directive.
+  ///
+  /// This method assumes that the current token matches `Keyword.IF`.
+  ///
+  ///     configuration ::=
+  ///         'if' '(' test ')' uri
+  ///
+  ///     test ::=
+  ///         dottedName ('==' stringLiteral)?
+  ///
+  ///     dottedName ::=
+  ///         identifier ('.' identifier)*
   Configuration parseConfiguration() {
     Token ifKeyword = getAndAdvance();
     Token leftParenthesis = _expect(TokenType.OPEN_PAREN);
@@ -2344,16 +2197,14 @@
         equalToken, value, rightParenthesis, libraryUri);
   }
 
-  /**
-   * Parse a const expression. Return the const expression that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.CONST`.
-   *
-   *     constExpression ::=
-   *         instanceCreationExpression
-   *       | listLiteral
-   *       | mapLiteral
-   */
+  /// Parse a const expression. Return the const expression that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.CONST`.
+  ///
+  ///     constExpression ::=
+  ///         instanceCreationExpression
+  ///       | listLiteral
+  ///       | mapLiteral
   Expression parseConstExpression() {
     Token keyword = getAndAdvance();
     TokenType type = _currentToken.type;
@@ -2368,14 +2219,12 @@
     return parseInstanceCreationExpression(keyword);
   }
 
-  /**
-   * Parse a field initializer within a constructor. The flag [hasThis] should
-   * be true if the current token is `this`. Return the field initializer that
-   * was parsed.
-   *
-   *     fieldInitializer:
-   *         ('this' '.')? identifier '=' conditionalExpression cascadeSection*
-   */
+  /// Parse a field initializer within a constructor. The flag [hasThis] should
+  /// be true if the current token is `this`. Return the field initializer that
+  /// was parsed.
+  ///
+  ///     fieldInitializer:
+  ///         ('this' '.')? identifier '=' conditionalExpression cascadeSection*
   ConstructorFieldInitializer parseConstructorFieldInitializer(bool hasThis) {
     Token keywordToken = null;
     Token period = null;
@@ -2427,13 +2276,11 @@
     }
   }
 
-  /**
-   * Parse the name of a constructor. Return the constructor name that was
-   * parsed.
-   *
-   *     constructorName:
-   *         type ('.' identifier)?
-   */
+  /// Parse the name of a constructor. Return the constructor name that was
+  /// parsed.
+  ///
+  ///     constructorName:
+  ///         type ('.' identifier)?
   ConstructorName parseConstructorName() {
     TypeName type = parseTypeName(false);
     Token period = null;
@@ -2445,14 +2292,12 @@
     return astFactory.constructorName(type, period, name);
   }
 
-  /**
-   * Parse a continue statement. Return the continue statement that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.CONTINUE`.
-   *
-   *     continueStatement ::=
-   *         'continue' identifier? ';'
-   */
+  /// Parse a continue statement. Return the continue statement that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.CONTINUE`.
+  ///
+  ///     continueStatement ::=
+  ///         'continue' identifier? ';'
   Statement parseContinueStatement() {
     Token continueKeyword = getAndAdvance();
     if (!_inLoop && !_inSwitch) {
@@ -2471,16 +2316,14 @@
     return astFactory.continueStatement(continueKeyword, label, semicolon);
   }
 
-  /**
-   * Parse a directive. The [commentAndMetadata] is the metadata to be
-   * associated with the directive. Return the directive that was parsed.
-   *
-   *     directive ::=
-   *         exportDirective
-   *       | libraryDirective
-   *       | importDirective
-   *       | partDirective
-   */
+  /// Parse a directive. The [commentAndMetadata] is the metadata to be
+  /// associated with the directive. Return the directive that was parsed.
+  ///
+  ///     directive ::=
+  ///         exportDirective
+  ///       | libraryDirective
+  ///       | importDirective
+  ///       | partDirective
   Directive parseDirective(CommentAndMetadata commentAndMetadata) {
     if (_matchesKeyword(Keyword.IMPORT)) {
       return parseImportDirective(commentAndMetadata);
@@ -2498,25 +2341,21 @@
     }
   }
 
-  /**
-   * Parse the script tag and directives in a compilation unit, starting with
-   * the given [token], until the first non-directive is encountered. The
-   * remainder of the compilation unit will not be parsed. Specifically, if
-   * there are directives later in the file, they will not be parsed. Return the
-   * compilation unit that was parsed.
-   */
+  /// Parse the script tag and directives in a compilation unit, starting with
+  /// the given [token], until the first non-directive is encountered. The
+  /// remainder of the compilation unit will not be parsed. Specifically, if
+  /// there are directives later in the file, they will not be parsed. Return
+  /// the compilation unit that was parsed.
   CompilationUnit parseDirectives(Token token) {
     _currentToken = token;
     return parseDirectives2();
   }
 
-  /**
-   * Parse the script tag and directives in a compilation unit until the first
-   * non-directive is encountered. Return the compilation unit that was parsed.
-   *
-   *     compilationUnit ::=
-   *         scriptTag? directive*
-   */
+  /// Parse the script tag and directives in a compilation unit until the first
+  /// non-directive is encountered. Return the compilation unit that was parsed.
+  ///
+  ///     compilationUnit ::=
+  ///         scriptTag? directive*
   CompilationUnit parseDirectives2() {
     Token firstToken = _currentToken;
     ScriptTag scriptTag = null;
@@ -2550,15 +2389,13 @@
         firstToken, scriptTag, directives, null, _currentToken);
   }
 
-  /**
-   * Parse a documentation comment based on the given list of documentation
-   * comment tokens. Return the documentation comment that was parsed, or `null`
-   * if there was no comment.
-   *
-   *     documentationComment ::=
-   *         multiLineComment?
-   *       | singleLineComment*
-   */
+  /// Parse a documentation comment based on the given list of documentation
+  /// comment tokens. Return the documentation comment that was parsed, or
+  /// `null` if there was no comment.
+  ///
+  ///     documentationComment ::=
+  ///         multiLineComment?
+  ///       | singleLineComment*
   Comment parseDocumentationComment(List<DocumentationCommentToken> tokens) {
     if (tokens == null) {
       return null;
@@ -2567,14 +2404,12 @@
     return astFactory.documentationComment(tokens, references);
   }
 
-  /**
-   * Parse a documentation comment. Return the documentation comment that was
-   * parsed, or `null` if there was no comment.
-   *
-   *     documentationComment ::=
-   *         multiLineComment?
-   *       | singleLineComment*
-   */
+  /// Parse a documentation comment. Return the documentation comment that was
+  /// parsed, or `null` if there was no comment.
+  ///
+  ///     documentationComment ::=
+  ///         multiLineComment?
+  ///       | singleLineComment*
   List<DocumentationCommentToken> parseDocumentationCommentTokens() {
     List<DocumentationCommentToken> tokens = <DocumentationCommentToken>[];
     CommentToken commentToken = _currentToken.precedingComments;
@@ -2596,14 +2431,12 @@
     return tokens.isEmpty ? null : tokens;
   }
 
-  /**
-   * Parse a do statement. Return the do statement that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.DO`.
-   *
-   *     doStatement ::=
-   *         'do' statement 'while' '(' expression ')' ';'
-   */
+  /// Parse a do statement. Return the do statement that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.DO`.
+  ///
+  ///     doStatement ::=
+  ///         'do' statement 'while' '(' expression ')' ';'
   Statement parseDoStatement() {
     bool wasInLoop = _inLoop;
     _inLoop = true;
@@ -2622,12 +2455,10 @@
     }
   }
 
-  /**
-   * Parse a dotted name. Return the dotted name that was parsed.
-   *
-   *     dottedName ::=
-   *         identifier ('.' identifier)*
-   */
+  /// Parse a dotted name. Return the dotted name that was parsed.
+  ///
+  ///     dottedName ::=
+  ///         identifier ('.' identifier)*
   DottedName parseDottedName() {
     List<SimpleIdentifier> components = <SimpleIdentifier>[
       parseSimpleIdentifier()
@@ -2638,25 +2469,21 @@
     return astFactory.dottedName(components);
   }
 
-  /**
-   * Parse an empty statement. Return the empty statement that was parsed.
-   *
-   * This method assumes that the current token matches `TokenType.SEMICOLON`.
-   *
-   *     emptyStatement ::=
-   *         ';'
-   */
+  /// Parse an empty statement. Return the empty statement that was parsed.
+  ///
+  /// This method assumes that the current token matches `TokenType.SEMICOLON`.
+  ///
+  ///     emptyStatement ::=
+  ///         ';'
   Statement parseEmptyStatement() => astFactory.emptyStatement(getAndAdvance());
 
-  /**
-   * Parse an enum declaration. The [commentAndMetadata] is the metadata to be
-   * associated with the member. Return the enum declaration that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.ENUM`.
-   *
-   *     enumType ::=
-   *         metadata 'enum' id '{' id (',' id)* (',')? '}'
-   */
+  /// Parse an enum declaration. The [commentAndMetadata] is the metadata to be
+  /// associated with the member. Return the enum declaration that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.ENUM`.
+  ///
+  ///     enumType ::=
+  ///         metadata 'enum' id '{' id (',' id)* (',')? '}'
   EnumDeclaration parseEnumDeclaration(CommentAndMetadata commentAndMetadata) {
     Token keyword = getAndAdvance();
     SimpleIdentifier name = parseSimpleIdentifier(isDeclaration: true);
@@ -2697,14 +2524,12 @@
         rightBracket);
   }
 
-  /**
-   * Parse an equality expression. Return the equality expression that was
-   * parsed.
-   *
-   *     equalityExpression ::=
-   *         relationalExpression (equalityOperator relationalExpression)?
-   *       | 'super' equalityOperator relationalExpression
-   */
+  /// Parse an equality expression. Return the equality expression that was
+  /// parsed.
+  ///
+  ///     equalityExpression ::=
+  ///         relationalExpression (equalityOperator relationalExpression)?
+  ///       | 'super' equalityOperator relationalExpression
   Expression parseEqualityExpression() {
     Expression expression;
     if (_currentToken.keyword == Keyword.SUPER &&
@@ -2726,15 +2551,14 @@
     return expression;
   }
 
-  /**
-   * Parse an export directive. The [commentAndMetadata] is the metadata to be
-   * associated with the directive. Return the export directive that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.EXPORT`.
-   *
-   *     exportDirective ::=
-   *         metadata 'export' stringLiteral configuration* combinator*';'
-   */
+  /// Parse an export directive. The [commentAndMetadata] is the metadata to be
+  /// associated with the directive. Return the export directive that was
+  /// parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.EXPORT`.
+  ///
+  ///     exportDirective ::=
+  ///         metadata 'export' stringLiteral configuration* combinator*';'
   ExportDirective parseExportDirective(CommentAndMetadata commentAndMetadata) {
     Token exportKeyword = getAndAdvance();
     StringLiteral libraryUri = _parseUri();
@@ -2751,25 +2575,21 @@
         semicolon);
   }
 
-  /**
-   * Parse an expression, starting with the given [token]. Return the expression
-   * that was parsed, or `null` if the tokens do not represent a recognizable
-   * expression.
-   */
+  /// Parse an expression, starting with the given [token]. Return the
+  /// expression that was parsed, or `null` if the tokens do not represent a
+  /// recognizable expression.
   Expression parseExpression(Token token) {
     _currentToken = token;
     return parseExpression2();
   }
 
-  /**
-   * Parse an expression that might contain a cascade. Return the expression
-   * that was parsed.
-   *
-   *     expression ::=
-   *         assignableExpression assignmentOperator expression
-   *       | conditionalExpression cascadeSection*
-   *       | throwExpression
-   */
+  /// Parse an expression that might contain a cascade. Return the expression
+  /// that was parsed.
+  ///
+  ///     expression ::=
+  ///         assignableExpression assignmentOperator expression
+  ///       | conditionalExpression cascadeSection*
+  ///       | throwExpression
   Expression parseExpression2() {
     if (_treeDepth > _MAX_TREE_DEPTH) {
       throw new _TooDeepTreeError();
@@ -2812,12 +2632,10 @@
     }
   }
 
-  /**
-   * Parse a list of expressions. Return the expression that was parsed.
-   *
-   *     expressionList ::=
-   *         expression (',' expression)*
-   */
+  /// Parse a list of expressions. Return the expression that was parsed.
+  ///
+  ///     expressionList ::=
+  ///         expression (',' expression)*
   List<Expression> parseExpressionList() {
     List<Expression> expressions = <Expression>[parseExpression2()];
     while (_optional(TokenType.COMMA)) {
@@ -2826,15 +2644,13 @@
     return expressions;
   }
 
-  /**
-   * Parse an expression that does not contain any cascades. Return the
-   * expression that was parsed.
-   *
-   *     expressionWithoutCascade ::=
-   *         assignableExpression assignmentOperator expressionWithoutCascade
-   *       | conditionalExpression
-   *       | throwExpressionWithoutCascade
-   */
+  /// Parse an expression that does not contain any cascades. Return the
+  /// expression that was parsed.
+  ///
+  ///     expressionWithoutCascade ::=
+  ///         assignableExpression assignmentOperator expressionWithoutCascade
+  ///       | conditionalExpression
+  ///       | throwExpressionWithoutCascade
   Expression parseExpressionWithoutCascade() {
     if (_matchesKeyword(Keyword.THROW)) {
       return parseThrowExpressionWithoutCascade();
@@ -2857,32 +2673,28 @@
     return expression;
   }
 
-  /**
-   * Parse a class extends clause. Return the class extends clause that was
-   * parsed.
-   *
-   * This method assumes that the current token matches `Keyword.EXTENDS`.
-   *
-   *     classExtendsClause ::=
-   *         'extends' type
-   */
+  /// Parse a class extends clause. Return the class extends clause that was
+  /// parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.EXTENDS`.
+  ///
+  ///     classExtendsClause ::=
+  ///         'extends' type
   ExtendsClause parseExtendsClause() {
     Token keyword = getAndAdvance();
     TypeName superclass = parseTypeName(false);
     return astFactory.extendsClause(keyword, superclass);
   }
 
-  /**
-   * Parse the 'final', 'const', 'var' or type preceding a variable declaration.
-   * The [optional] is `true` if the keyword and type are optional. Return the
-   * 'final', 'const', 'var' or type that was parsed.
-   *
-   *     finalConstVarOrType ::=
-   *         'final' type?
-   *       | 'const' type?
-   *       | 'var'
-   *       | type
-   */
+  /// Parse the 'final', 'const', 'var' or type preceding a variable
+  /// declaration. The [optional] is `true` if the keyword and type are
+  /// optional. Return the 'final', 'const', 'var' or type that was parsed.
+  ///
+  ///     finalConstVarOrType ::=
+  ///         'final' type?
+  ///       | 'const' type?
+  ///       | 'var'
+  ///       | type
   FinalConstVarOrType parseFinalConstVarOrType(bool optional,
       {bool inFunctionType: false}) {
     Token keywordToken = null;
@@ -2925,19 +2737,17 @@
     return new FinalConstVarOrType(keywordToken, type);
   }
 
-  /**
-   * Parse a formal parameter. At most one of `isOptional` and `isNamed` can be
-   * `true`. The [kind] is the kind of parameter being expected based on the
-   * presence or absence of group delimiters. Return the formal parameter that
-   * was parsed.
-   *
-   *     defaultFormalParameter ::=
-   *         normalFormalParameter ('=' expression)?
-   *
-   *     defaultNamedParameter ::=
-   *         normalFormalParameter ('=' expression)?
-   *         normalFormalParameter (':' expression)?
-   */
+  /// Parse a formal parameter. At most one of `isOptional` and `isNamed` can be
+  /// `true`. The [kind] is the kind of parameter being expected based on the
+  /// presence or absence of group delimiters. Return the formal parameter that
+  /// was parsed.
+  ///
+  ///     defaultFormalParameter ::=
+  ///         normalFormalParameter ('=' expression)?
+  ///
+  ///     defaultNamedParameter ::=
+  ///         normalFormalParameter ('=' expression)?
+  ///         normalFormalParameter (':' expression)?
   FormalParameter parseFormalParameter(ParameterKind kind,
       {bool inFunctionType: false}) {
     NormalFormalParameter parameter =
@@ -3000,28 +2810,26 @@
     return parameter;
   }
 
-  /**
-   * Parse a list of formal parameters. Return the formal parameters that were
-   * parsed.
-   *
-   *     formalParameterList ::=
-   *         '(' ')'
-   *       | '(' normalFormalParameters (',' optionalFormalParameters)? ')'
-   *       | '(' optionalFormalParameters ')'
-   *
-   *     normalFormalParameters ::=
-   *         normalFormalParameter (',' normalFormalParameter)*
-   *
-   *     optionalFormalParameters ::=
-   *         optionalPositionalFormalParameters
-   *       | namedFormalParameters
-   *
-   *     optionalPositionalFormalParameters ::=
-   *         '[' defaultFormalParameter (',' defaultFormalParameter)* ']'
-   *
-   *     namedFormalParameters ::=
-   *         '{' defaultNamedParameter (',' defaultNamedParameter)* '}'
-   */
+  /// Parse a list of formal parameters. Return the formal parameters that were
+  /// parsed.
+  ///
+  ///     formalParameterList ::=
+  ///         '(' ')'
+  ///       | '(' normalFormalParameters (',' optionalFormalParameters)? ')'
+  ///       | '(' optionalFormalParameters ')'
+  ///
+  ///     normalFormalParameters ::=
+  ///         normalFormalParameter (',' normalFormalParameter)*
+  ///
+  ///     optionalFormalParameters ::=
+  ///         optionalPositionalFormalParameters
+  ///       | namedFormalParameters
+  ///
+  ///     optionalPositionalFormalParameters ::=
+  ///         '[' defaultFormalParameter (',' defaultFormalParameter)* ']'
+  ///
+  ///     namedFormalParameters ::=
+  ///         '{' defaultNamedParameter (',' defaultNamedParameter)* '}'
   FormalParameterList parseFormalParameterList({bool inFunctionType: false}) {
     if (_matches(TokenType.OPEN_PAREN)) {
       return _parseFormalParameterListUnchecked(inFunctionType: inFunctionType);
@@ -3035,21 +2843,19 @@
         _createSyntheticToken(TokenType.OPEN_PAREN));
   }
 
-  /**
-   * Parse a for statement. Return the for statement that was parsed.
-   *
-   *     forStatement ::=
-   *         'for' '(' forLoopParts ')' statement
-   *
-   *     forLoopParts ::=
-   *         forInitializerStatement expression? ';' expressionList?
-   *       | declaredIdentifier 'in' expression
-   *       | identifier 'in' expression
-   *
-   *     forInitializerStatement ::=
-   *         localVariableDeclaration ';'
-   *       | expression? ';'
-   */
+  /// Parse a for statement. Return the for statement that was parsed.
+  ///
+  ///     forStatement ::=
+  ///         'for' '(' forLoopParts ')' statement
+  ///
+  ///     forLoopParts ::=
+  ///         forInitializerStatement expression? ';' expressionList?
+  ///       | declaredIdentifier 'in' expression
+  ///       | identifier 'in' expression
+  ///
+  ///     forInitializerStatement ::=
+  ///         localVariableDeclaration ';'
+  ///       | expression? ';'
   Statement parseForStatement() {
     bool wasInLoop = _inLoop;
     _inLoop = true;
@@ -3181,21 +2987,20 @@
     }
   }
 
-  /**
-   * Parse a function body. The [mayBeEmpty] is `true` if the function body is
-   * allowed to be empty. The [emptyErrorCode] is the error code to report if
-   * function body expected, but not found. The [inExpression] is `true` if the
-   * function body is being parsed as part of an expression and therefore does
-   * not have a terminating semicolon. Return the function body that was parsed.
-   *
-   *     functionBody ::=
-   *         '=>' expression ';'
-   *       | block
-   *
-   *     functionExpressionBody ::=
-   *         '=>' expression
-   *       | block
-   */
+  /// Parse a function body. The [mayBeEmpty] is `true` if the function body is
+  /// allowed to be empty. The [emptyErrorCode] is the error code to report if
+  /// function body expected, but not found. The [inExpression] is `true` if the
+  /// function body is being parsed as part of an expression and therefore does
+  /// not have a terminating semicolon. Return the function body that was
+  /// parsed.
+  ///
+  ///     functionBody ::=
+  ///         '=>' expression ';'
+  ///       | block
+  ///
+  ///     functionExpressionBody ::=
+  ///         '=>' expression
+  ///       | block
   FunctionBody parseFunctionBody(
       bool mayBeEmpty, ParserErrorCode emptyErrorCode, bool inExpression) {
     bool wasInAsync = _inAsync;
@@ -3301,19 +3106,17 @@
     }
   }
 
-  /**
-   * Parse a function declaration. The [commentAndMetadata] is the documentation
-   * comment and metadata to be associated with the declaration. The
-   * [externalKeyword] is the 'external' keyword, or `null` if the function is
-   * not external. The [returnType] is the return type, or `null` if there is no
-   * return type. The [isStatement] is `true` if the function declaration is
-   * being parsed as a statement. Return the function declaration that was
-   * parsed.
-   *
-   *     functionDeclaration ::=
-   *         functionSignature functionBody
-   *       | returnType? getOrSet identifier formalParameterList functionBody
-   */
+  /// Parse a function declaration. The [commentAndMetadata] is the
+  /// documentation comment and metadata to be associated with the declaration.
+  /// The [externalKeyword] is the 'external' keyword, or `null` if the
+  /// function is not external. The [returnType] is the return type, or `null`
+  /// if there is no return type. The [isStatement] is `true` if the function
+  /// declaration is being parsed as a statement. Return the function
+  /// declaration that was parsed.
+  ///
+  ///     functionDeclaration ::=
+  ///         functionSignature functionBody
+  ///       | returnType? getOrSet identifier formalParameterList functionBody
   FunctionDeclaration parseFunctionDeclaration(
       CommentAndMetadata commentAndMetadata,
       Token externalKeyword,
@@ -3377,13 +3180,11 @@
         astFactory.functionExpression(typeParameters, parameters, body));
   }
 
-  /**
-   * Parse a function declaration statement. Return the function declaration
-   * statement that was parsed.
-   *
-   *     functionDeclarationStatement ::=
-   *         functionSignature functionBody
-   */
+  /// Parse a function declaration statement. Return the function declaration
+  /// statement that was parsed.
+  ///
+  ///     functionDeclarationStatement ::=
+  ///         functionSignature functionBody
   Statement parseFunctionDeclarationStatement() {
     Modifiers modifiers = parseModifiers();
     _validateModifiersForFunctionDeclarationStatement(modifiers);
@@ -3391,13 +3192,11 @@
         parseCommentAndMetadata(), _parseOptionalReturnType());
   }
 
-  /**
-   * Parse a function expression. Return the function expression that was
-   * parsed.
-   *
-   *     functionExpression ::=
-   *         typeParameters? formalParameterList functionExpressionBody
-   */
+  /// Parse a function expression. Return the function expression that was
+  /// parsed.
+  ///
+  ///     functionExpression ::=
+  ///         typeParameters? formalParameterList functionExpressionBody
   FunctionExpression parseFunctionExpression() {
     TypeParameterList typeParameters = _parseGenericMethodTypeParameters();
     FormalParameterList parameters = parseFormalParameterList();
@@ -3407,29 +3206,27 @@
     return astFactory.functionExpression(typeParameters, parameters, body);
   }
 
-  /**
-   * Parse the portion of a generic function type following the [returnType].
-   *
-   *     functionType ::=
-   *         returnType? 'Function' typeParameters? parameterTypeList
-   *     parameterTypeList ::=
-   *         '(' ')' |
-   *       | '(' normalParameterTypes ','? ')' |
-   *       | '(' normalParameterTypes ',' optionalParameterTypes ')' |
-   *       | '(' optionalParameterTypes ')'
-   *     normalParameterTypes ::=
-   *         normalParameterType (',' normalParameterType)*
-   *     normalParameterType ::=
-   *         type | typedIdentifier
-   *     optionalParameterTypes ::=
-   *         optionalPositionalParameterTypes | namedParameterTypes
-   *     optionalPositionalParameterTypes ::=
-   *         '[' normalParameterTypes ','? ']'
-   *     namedParameterTypes ::=
-   *         '{' typedIdentifier (',' typedIdentifier)* ','? '}'
-   *     typedIdentifier ::=
-   *         type identifier
-   */
+  /// Parse the portion of a generic function type following the [returnType].
+  ///
+  ///     functionType ::=
+  ///         returnType? 'Function' typeParameters? parameterTypeList
+  ///     parameterTypeList ::=
+  ///         '(' ')' |
+  ///       | '(' normalParameterTypes ','? ')' |
+  ///       | '(' normalParameterTypes ',' optionalParameterTypes ')' |
+  ///       | '(' optionalParameterTypes ')'
+  ///     normalParameterTypes ::=
+  ///         normalParameterType (',' normalParameterType)*
+  ///     normalParameterType ::=
+  ///         type | typedIdentifier
+  ///     optionalParameterTypes ::=
+  ///         optionalPositionalParameterTypes | namedParameterTypes
+  ///     optionalPositionalParameterTypes ::=
+  ///         '[' normalParameterTypes ','? ']'
+  ///     namedParameterTypes ::=
+  ///         '{' typedIdentifier (',' typedIdentifier)* ','? '}'
+  ///     typedIdentifier ::=
+  ///         type identifier
   GenericFunctionType parseGenericFunctionTypeAfterReturnType(
       TypeAnnotation returnType) {
     Token functionKeyword = null;
@@ -3450,14 +3247,12 @@
         returnType, functionKeyword, typeParameters, parameters);
   }
 
-  /**
-   * Parse a generic function type alias.
-   *
-   * This method assumes that the current token is an identifier.
-   *
-   *     genericTypeAlias ::=
-   *         'typedef' identifier typeParameterList? '=' functionType ';'
-   */
+  /// Parse a generic function type alias.
+  ///
+  /// This method assumes that the current token is an identifier.
+  ///
+  ///     genericTypeAlias ::=
+  ///         'typedef' identifier typeParameterList? '=' functionType ';'
   GenericTypeAlias parseGenericTypeAlias(
       CommentAndMetadata commentAndMetadata, Token keyword) {
     Identifier name = _parseSimpleIdentifierUnchecked(isDeclaration: true);
@@ -3494,22 +3289,20 @@
         semicolon);
   }
 
-  /**
-   * Parse a getter. The [commentAndMetadata] is the documentation comment and
-   * metadata to be associated with the declaration. The externalKeyword] is the
-   * 'external' token. The staticKeyword] is the static keyword, or `null` if
-   * the getter is not static. The [returnType] the return type that has already
-   * been parsed, or `null` if there was no return type. Return the getter that
-   * was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.GET`.
-   *
-   *     getter ::=
-   *         getterSignature functionBody?
-   *
-   *     getterSignature ::=
-   *         'external'? 'static'? returnType? 'get' identifier
-   */
+  /// Parse a getter. The [commentAndMetadata] is the documentation comment and
+  /// metadata to be associated with the declaration. The externalKeyword] is
+  /// the 'external' token. The staticKeyword] is the static keyword, or `null`
+  /// if the getter is not static. The [returnType] the return type that has
+  /// already been parsed, or `null` if there was no return type. Return the
+  /// getter that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.GET`.
+  ///
+  ///     getter ::=
+  ///         getterSignature functionBody?
+  ///
+  ///     getterSignature ::=
+  ///         'external'? 'static'? returnType? 'get' identifier
   MethodDeclaration parseGetter(CommentAndMetadata commentAndMetadata,
       Token externalKeyword, Token staticKeyword, TypeAnnotation returnType) {
     Token propertyKeyword = getAndAdvance();
@@ -3541,13 +3334,11 @@
         body);
   }
 
-  /**
-   * Parse a list of identifiers. Return the list of identifiers that were
-   * parsed.
-   *
-   *     identifierList ::=
-   *         identifier (',' identifier)*
-   */
+  /// Parse a list of identifiers. Return the list of identifiers that were
+  /// parsed.
+  ///
+  ///     identifierList ::=
+  ///         identifier (',' identifier)*
   List<SimpleIdentifier> parseIdentifierList() {
     List<SimpleIdentifier> identifiers = <SimpleIdentifier>[
       parseSimpleIdentifier()
@@ -3558,12 +3349,10 @@
     return identifiers;
   }
 
-  /**
-   * Parse an if-null expression.  Return the if-null expression that was
-   * parsed.
-   *
-   *     ifNullExpression ::= logicalOrExpression ('??' logicalOrExpression)*
-   */
+  /// Parse an if-null expression.  Return the if-null expression that was
+  /// parsed.
+  ///
+  ///     ifNullExpression ::= logicalOrExpression ('??' logicalOrExpression)*
   Expression parseIfNullExpression() {
     Expression expression = parseLogicalOrExpression();
     while (_currentToken.type == TokenType.QUESTION_QUESTION) {
@@ -3573,14 +3362,12 @@
     return expression;
   }
 
-  /**
-   * Parse an if statement. Return the if statement that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.IF`.
-   *
-   *     ifStatement ::=
-   *         'if' '(' expression ')' statement ('else' statement)?
-   */
+  /// Parse an if statement. Return the if statement that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.IF`.
+  ///
+  ///     ifStatement ::=
+  ///         'if' '(' expression ')' statement ('else' statement)?
   Statement parseIfStatement() {
     Token ifKeyword = getAndAdvance();
     Token leftParenthesis = _expect(TokenType.OPEN_PAREN);
@@ -3597,14 +3384,12 @@
         rightParenthesis, thenStatement, elseKeyword, elseStatement);
   }
 
-  /**
-   * Parse an implements clause. Return the implements clause that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.IMPLEMENTS`.
-   *
-   *     implementsClause ::=
-   *         'implements' type (',' type)*
-   */
+  /// Parse an implements clause. Return the implements clause that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.IMPLEMENTS`.
+  ///
+  ///     implementsClause ::=
+  ///         'implements' type (',' type)*
   ImplementsClause parseImplementsClause() {
     Token keyword = getAndAdvance();
     List<TypeName> interfaces = <TypeName>[];
@@ -3615,15 +3400,14 @@
     return astFactory.implementsClause(keyword, interfaces);
   }
 
-  /**
-   * Parse an import directive. The [commentAndMetadata] is the metadata to be
-   * associated with the directive. Return the import directive that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.IMPORT`.
-   *
-   *     importDirective ::=
-   *         metadata 'import' stringLiteral configuration* (deferred)? ('as' identifier)? combinator*';'
-   */
+  /// Parse an import directive. The [commentAndMetadata] is the metadata to be
+  /// associated with the directive. Return the import directive that was
+  /// parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.IMPORT`.
+  ///
+  ///     importDirective ::=
+  ///         metadata 'import' stringLiteral configuration* (deferred)? ('as' identifier)? combinator*';'
   ImportDirective parseImportDirective(CommentAndMetadata commentAndMetadata) {
     Token importKeyword = getAndAdvance();
     StringLiteral libraryUri = _parseUri();
@@ -3671,25 +3455,23 @@
         semicolon);
   }
 
-  /**
-   * Parse a list of initialized identifiers. The [commentAndMetadata] is the
-   * documentation comment and metadata to be associated with the declaration.
-   * The [staticKeyword] is the static keyword, or `null` if the getter is not
-   * static. The [keyword] is the token representing the 'final', 'const' or
-   * 'var' keyword, or `null` if there is no keyword. The [type] is the type
-   * that has already been parsed, or `null` if 'var' was provided. Return the
-   * getter that was parsed.
-   *
-   *     declaration ::=
-   *         ('static' | 'covariant')? ('var' | type) initializedIdentifierList ';'
-   *       | 'final' type? initializedIdentifierList ';'
-   *
-   *     initializedIdentifierList ::=
-   *         initializedIdentifier (',' initializedIdentifier)*
-   *
-   *     initializedIdentifier ::=
-   *         identifier ('=' expression)?
-   */
+  /// Parse a list of initialized identifiers. The [commentAndMetadata] is the
+  /// documentation comment and metadata to be associated with the declaration.
+  /// The [staticKeyword] is the static keyword, or `null` if the getter is not
+  /// static. The [keyword] is the token representing the 'final', 'const' or
+  /// 'var' keyword, or `null` if there is no keyword. The [type] is the type
+  /// that has already been parsed, or `null` if 'var' was provided. Return the
+  /// getter that was parsed.
+  ///
+  ///     declaration ::=
+  ///         ('static' | 'covariant')? ('var' | type) initializedIdentifierList ';'
+  ///       | 'final' type? initializedIdentifierList ';'
+  ///
+  ///     initializedIdentifierList ::=
+  ///         initializedIdentifier (',' initializedIdentifier)*
+  ///
+  ///     initializedIdentifier ::=
+  ///         identifier ('=' expression)?
   FieldDeclaration parseInitializedIdentifierList(
       CommentAndMetadata commentAndMetadata,
       Token staticKeyword,
@@ -3707,14 +3489,12 @@
         semicolon: _expect(TokenType.SEMICOLON));
   }
 
-  /**
-   * Parse an instance creation expression. The [keyword] is the 'new' or
-   * 'const' keyword that introduces the expression. Return the instance
-   * creation expression that was parsed.
-   *
-   *     instanceCreationExpression ::=
-   *         ('new' | 'const') type ('.' identifier)? argumentList
-   */
+  /// Parse an instance creation expression. The [keyword] is the 'new' or
+  /// 'const' keyword that introduces the expression. Return the instance
+  /// creation expression that was parsed.
+  ///
+  ///     instanceCreationExpression ::=
+  ///         ('new' | 'const') type ('.' identifier)? argumentList
   InstanceCreationExpression parseInstanceCreationExpression(Token keyword) {
     ConstructorName constructorName = parseConstructorName();
     ArgumentList argumentList = _parseArgumentListChecked();
@@ -3722,15 +3502,13 @@
         keyword, constructorName, argumentList);
   }
 
-  /**
-   * Parse a label. Return the label that was parsed.
-   *
-   * This method assumes that the current token matches an identifier and that
-   * the following token matches `TokenType.COLON`.
-   *
-   *     label ::=
-   *         identifier ':'
-   */
+  /// Parse a label. Return the label that was parsed.
+  ///
+  /// This method assumes that the current token matches an identifier and that
+  /// the following token matches `TokenType.COLON`.
+  ///
+  ///     label ::=
+  ///         identifier ':'
   Label parseLabel({bool isDeclaration: false}) {
     SimpleIdentifier label =
         _parseSimpleIdentifierUnchecked(isDeclaration: isDeclaration);
@@ -3738,16 +3516,14 @@
     return astFactory.label(label, colon);
   }
 
-  /**
-   * Parse a library directive. The [commentAndMetadata] is the metadata to be
-   * associated with the directive. Return the library directive that was
-   * parsed.
-   *
-   * This method assumes that the current token matches `Keyword.LIBRARY`.
-   *
-   *     libraryDirective ::=
-   *         metadata 'library' identifier ';'
-   */
+  /// Parse a library directive. The [commentAndMetadata] is the metadata to be
+  /// associated with the directive. Return the library directive that was
+  /// parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.LIBRARY`.
+  ///
+  ///     libraryDirective ::=
+  ///         metadata 'library' identifier ';'
   LibraryDirective parseLibraryDirective(
       CommentAndMetadata commentAndMetadata) {
     Token keyword = getAndAdvance();
@@ -3758,12 +3534,10 @@
         commentAndMetadata.metadata, keyword, libraryName, semicolon);
   }
 
-  /**
-   * Parse a library identifier. Return the library identifier that was parsed.
-   *
-   *     libraryIdentifier ::=
-   *         identifier ('.' identifier)*
-   */
+  /// Parse a library identifier. Return the library identifier that was parsed.
+  ///
+  ///     libraryIdentifier ::=
+  ///         identifier ('.' identifier)*
   LibraryIdentifier parseLibraryIdentifier() {
     List<SimpleIdentifier> components = <SimpleIdentifier>[];
     components.add(parseSimpleIdentifier());
@@ -3773,18 +3547,16 @@
     return astFactory.libraryIdentifier(components);
   }
 
-  /**
-   * Parse a list literal. The [modifier] is the 'const' modifier appearing
-   * before the literal, or `null` if there is no modifier. The [typeArguments]
-   * is the type arguments appearing before the literal, or `null` if there are
-   * no type arguments. Return the list literal that was parsed.
-   *
-   * This method assumes that the current token matches either
-   * `TokenType.OPEN_SQUARE_BRACKET` or `TokenType.INDEX`.
-   *
-   *     listLiteral ::=
-   *         'const'? typeArguments? '[' (expressionList ','?)? ']'
-   */
+  /// Parse a list literal. The [modifier] is the 'const' modifier appearing
+  /// before the literal, or `null` if there is no modifier. The [typeArguments]
+  /// is the type arguments appearing before the literal, or `null` if there are
+  /// no type arguments. Return the list literal that was parsed.
+  ///
+  /// This method assumes that the current token matches either
+  /// `TokenType.OPEN_SQUARE_BRACKET` or `TokenType.INDEX`.
+  ///
+  ///     listLiteral ::=
+  ///         'const'? typeArguments? '[' (expressionList ','?)? ']'
   ListLiteral parseListLiteral(Token modifier, TypeArgumentList typeArguments) {
     if (_matches(TokenType.INDEX)) {
       _splitIndex();
@@ -3815,15 +3587,13 @@
     }
   }
 
-  /**
-   * Parse a list or map literal. The [modifier] is the 'const' modifier
-   * appearing before the literal, or `null` if there is no modifier. Return the
-   * list or map literal that was parsed.
-   *
-   *     listOrMapLiteral ::=
-   *         listLiteral
-   *       | mapLiteral
-   */
+  /// Parse a list or map literal. The [modifier] is the 'const' modifier
+  /// appearing before the literal, or `null` if there is no modifier. Return
+  /// the list or map literal that was parsed.
+  ///
+  ///     listOrMapLiteral ::=
+  ///         listLiteral
+  ///       | mapLiteral
   TypedLiteral parseListOrMapLiteral(Token modifier) {
     TypeArgumentList typeArguments = _parseOptionalTypeArguments();
     if (_matches(TokenType.OPEN_CURLY_BRACKET)) {
@@ -3841,13 +3611,11 @@
         _createSyntheticToken(TokenType.CLOSE_SQUARE_BRACKET));
   }
 
-  /**
-   * Parse a logical and expression. Return the logical and expression that was
-   * parsed.
-   *
-   *     logicalAndExpression ::=
-   *         equalityExpression ('&&' equalityExpression)*
-   */
+  /// Parse a logical and expression. Return the logical and expression that was
+  /// parsed.
+  ///
+  ///     logicalAndExpression ::=
+  ///         equalityExpression ('&&' equalityExpression)*
   Expression parseLogicalAndExpression() {
     Expression expression = parseEqualityExpression();
     while (_currentToken.type == TokenType.AMPERSAND_AMPERSAND) {
@@ -3857,13 +3625,11 @@
     return expression;
   }
 
-  /**
-   * Parse a logical or expression. Return the logical or expression that was
-   * parsed.
-   *
-   *     logicalOrExpression ::=
-   *         logicalAndExpression ('||' logicalAndExpression)*
-   */
+  /// Parse a logical or expression. Return the logical or expression that was
+  /// parsed.
+  ///
+  ///     logicalOrExpression ::=
+  ///         logicalAndExpression ('||' logicalAndExpression)*
   Expression parseLogicalOrExpression() {
     Expression expression = parseLogicalAndExpression();
     while (_currentToken.type == TokenType.BAR_BAR) {
@@ -3873,18 +3639,16 @@
     return expression;
   }
 
-  /**
-   * Parse a map literal. The [modifier] is the 'const' modifier appearing
-   * before the literal, or `null` if there is no modifier. The [typeArguments]
-   * is the type arguments that were declared, or `null` if there are no type
-   * arguments. Return the map literal that was parsed.
-   *
-   * This method assumes that the current token matches
-   * `TokenType.OPEN_CURLY_BRACKET`.
-   *
-   *     mapLiteral ::=
-   *         'const'? typeArguments? '{' (mapLiteralEntry (',' mapLiteralEntry)* ','?)? '}'
-   */
+  /// Parse a map literal. The [modifier] is the 'const' modifier appearing
+  /// before the literal, or `null` if there is no modifier. The [typeArguments]
+  /// is the type arguments that were declared, or `null` if there are no type
+  /// arguments. Return the map literal that was parsed.
+  ///
+  /// This method assumes that the current token matches
+  /// `TokenType.OPEN_CURLY_BRACKET`.
+  ///
+  ///     mapLiteral ::=
+  ///         'const'? typeArguments? '{' (mapLiteralEntry (',' mapLiteralEntry)* ','?)? '}'
   MapLiteral parseMapLiteral(Token modifier, TypeArgumentList typeArguments) {
     Token leftBracket = getAndAdvance();
     if (_matches(TokenType.CLOSE_CURLY_BRACKET)) {
@@ -3910,12 +3674,10 @@
     }
   }
 
-  /**
-   * Parse a map literal entry. Return the map literal entry that was parsed.
-   *
-   *     mapLiteralEntry ::=
-   *         expression ':' expression
-   */
+  /// Parse a map literal entry. Return the map literal entry that was parsed.
+  ///
+  ///     mapLiteralEntry ::=
+  ///         expression ':' expression
   MapLiteralEntry parseMapLiteralEntry() {
     Expression key = parseExpression2();
     Token separator = _expect(TokenType.COLON);
@@ -3923,17 +3685,15 @@
     return astFactory.mapLiteralEntry(key, separator, value);
   }
 
-  /**
-   * Parse the modifiers preceding a declaration. This method allows the
-   * modifiers to appear in any order but does generate errors for duplicated
-   * modifiers. Checks for other problems, such as having the modifiers appear
-   * in the wrong order or specifying both 'const' and 'final', are reported in
-   * one of the methods whose name is prefixed with `validateModifiersFor`.
-   * Return the modifiers that were parsed.
-   *
-   *     modifiers ::=
-   *         ('abstract' | 'const' | 'external' | 'factory' | 'final' | 'static' | 'var')*
-   */
+  /// Parse the modifiers preceding a declaration. This method allows the
+  /// modifiers to appear in any order but does generate errors for duplicated
+  /// modifiers. Checks for other problems, such as having the modifiers appear
+  /// in the wrong order or specifying both 'const' and 'final', are reported in
+  /// one of the methods whose name is prefixed with `validateModifiersFor`.
+  /// Return the modifiers that were parsed.
+  ///
+  ///     modifiers ::=
+  ///         ('abstract' | 'const' | 'external' | 'factory' | 'final' | 'static' | 'var')*
   Modifiers parseModifiers() {
     Modifiers modifiers = new Modifiers();
     bool progress = true;
@@ -4016,14 +3776,12 @@
     return modifiers;
   }
 
-  /**
-   * Parse a multiplicative expression. Return the multiplicative expression
-   * that was parsed.
-   *
-   *     multiplicativeExpression ::=
-   *         unaryExpression (multiplicativeOperator unaryExpression)*
-   *       | 'super' (multiplicativeOperator unaryExpression)+
-   */
+  /// Parse a multiplicative expression. Return the multiplicative expression
+  /// that was parsed.
+  ///
+  ///     multiplicativeExpression ::=
+  ///         unaryExpression (multiplicativeOperator unaryExpression)*
+  ///       | 'super' (multiplicativeOperator unaryExpression)+
   Expression parseMultiplicativeExpression() {
     Expression expression;
     if (_currentToken.keyword == Keyword.SUPER &&
@@ -4039,37 +3797,33 @@
     return expression;
   }
 
-  /**
-   * Parse a new expression. Return the new expression that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.NEW`.
-   *
-   *     newExpression ::=
-   *         instanceCreationExpression
-   */
+  /// Parse a new expression. Return the new expression that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.NEW`.
+  ///
+  ///     newExpression ::=
+  ///         instanceCreationExpression
   InstanceCreationExpression parseNewExpression() =>
       parseInstanceCreationExpression(getAndAdvance());
 
-  /**
-   * Parse a non-labeled statement. Return the non-labeled statement that was
-   * parsed.
-   *
-   *     nonLabeledStatement ::=
-   *         block
-   *       | assertStatement
-   *       | breakStatement
-   *       | continueStatement
-   *       | doStatement
-   *       | forStatement
-   *       | ifStatement
-   *       | returnStatement
-   *       | switchStatement
-   *       | tryStatement
-   *       | whileStatement
-   *       | variableDeclarationList ';'
-   *       | expressionStatement
-   *       | functionSignature functionBody
-   */
+  /// Parse a non-labeled statement. Return the non-labeled statement that was
+  /// parsed.
+  ///
+  ///     nonLabeledStatement ::=
+  ///         block
+  ///       | assertStatement
+  ///       | breakStatement
+  ///       | continueStatement
+  ///       | doStatement
+  ///       | forStatement
+  ///       | ifStatement
+  ///       | returnStatement
+  ///       | switchStatement
+  ///       | tryStatement
+  ///       | whileStatement
+  ///       | variableDeclarationList ';'
+  ///       | expressionStatement
+  ///       | functionSignature functionBody
   Statement parseNonLabeledStatement() {
     // TODO(brianwilkerson) Pass the comment and metadata on where appropriate.
     CommentAndMetadata commentAndMetadata = parseCommentAndMetadata();
@@ -4269,25 +4023,23 @@
     }
   }
 
-  /**
-   * Parse a normal formal parameter. Return the normal formal parameter that
-   * was parsed.
-   *
-   *     normalFormalParameter ::=
-   *         functionSignature
-   *       | fieldFormalParameter
-   *       | simpleFormalParameter
-   *
-   *     functionSignature:
-   *         metadata returnType? identifier typeParameters? formalParameterList
-   *
-   *     fieldFormalParameter ::=
-   *         metadata finalConstVarOrType? 'this' '.' identifier
-   *
-   *     simpleFormalParameter ::=
-   *         declaredIdentifier
-   *       | metadata identifier
-   */
+  /// Parse a normal formal parameter. Return the normal formal parameter that
+  /// was parsed.
+  ///
+  ///     normalFormalParameter ::=
+  ///         functionSignature
+  ///       | fieldFormalParameter
+  ///       | simpleFormalParameter
+  ///
+  ///     functionSignature:
+  ///         metadata returnType? identifier typeParameters? formalParameterList
+  ///
+  ///     fieldFormalParameter ::=
+  ///         metadata finalConstVarOrType? 'this' '.' identifier
+  ///
+  ///     simpleFormalParameter ::=
+  ///         declaredIdentifier
+  ///       | metadata identifier
   NormalFormalParameter parseNormalFormalParameter(
       {bool inFunctionType: false}) {
     Token covariantKeyword;
@@ -4387,19 +4139,17 @@
             astFactory.simpleIdentifier(identifier.token, isDeclaration: true));
   }
 
-  /**
-   * Parse an operator declaration. The [commentAndMetadata] is the
-   * documentation comment and metadata to be associated with the declaration.
-   * The [externalKeyword] is the 'external' token. The [returnType] is the
-   * return type that has already been parsed, or `null` if there was no return
-   * type. Return the operator declaration that was parsed.
-   *
-   *     operatorDeclaration ::=
-   *         operatorSignature (';' | functionBody)
-   *
-   *     operatorSignature ::=
-   *         'external'? returnType? 'operator' operator formalParameterList
-   */
+  /// Parse an operator declaration. The [commentAndMetadata] is the
+  /// documentation comment and metadata to be associated with the declaration.
+  /// The [externalKeyword] is the 'external' token. The [returnType] is the
+  /// return type that has already been parsed, or `null` if there was no return
+  /// type. Return the operator declaration that was parsed.
+  ///
+  ///     operatorDeclaration ::=
+  ///         operatorSignature (';' | functionBody)
+  ///
+  ///     operatorSignature ::=
+  ///         'external'? returnType? 'operator' operator formalParameterList
   MethodDeclaration parseOperator(CommentAndMetadata commentAndMetadata,
       Token externalKeyword, TypeName returnType) {
     Token operatorKeyword;
@@ -4414,19 +4164,17 @@
         commentAndMetadata, externalKeyword, returnType, operatorKeyword);
   }
 
-  /**
-   * Parse a part or part-of directive. The [commentAndMetadata] is the metadata
-   * to be associated with the directive. Return the part or part-of directive
-   * that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.PART`.
-   *
-   *     partDirective ::=
-   *         metadata 'part' stringLiteral ';'
-   *
-   *     partOfDirective ::=
-   *         metadata 'part' 'of' identifier ';'
-   */
+  /// Parse a part or part-of directive. The [commentAndMetadata] is the
+  /// metadata to be associated with the directive. Return the part or part-of
+  /// directive that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.PART`.
+  ///
+  ///     partDirective ::=
+  ///         metadata 'part' stringLiteral ';'
+  ///
+  ///     partOfDirective ::=
+  ///         metadata 'part' 'of' identifier ';'
   Directive parsePartOrPartOfDirective(CommentAndMetadata commentAndMetadata) {
     if (_tokenMatchesKeyword(_peek(), Keyword.OF)) {
       return _parsePartOfDirective(commentAndMetadata);
@@ -4434,17 +4182,15 @@
     return _parsePartDirective(commentAndMetadata);
   }
 
-  /**
-   * Parse a postfix expression. Return the postfix expression that was parsed.
-   *
-   *     postfixExpression ::=
-   *         assignableExpression postfixOperator
-   *       | primary selector*
-   *
-   *     selector ::=
-   *         assignableSelector
-   *       | argumentPart
-   */
+  /// Parse a postfix expression. Return the postfix expression that was parsed.
+  ///
+  ///     postfixExpression ::=
+  ///         assignableExpression postfixOperator
+  ///       | primary selector*
+  ///
+  ///     selector ::=
+  ///         assignableSelector
+  ///       | argumentPart
   Expression parsePostfixExpression() {
     Expression operand = parseAssignableExpression(true);
     TokenType type = _currentToken.type;
@@ -4499,40 +4245,36 @@
     return astFactory.postfixExpression(operand, operator);
   }
 
-  /**
-   * Parse a prefixed identifier. Return the prefixed identifier that was
-   * parsed.
-   *
-   *     prefixedIdentifier ::=
-   *         identifier ('.' identifier)?
-   */
+  /// Parse a prefixed identifier. Return the prefixed identifier that was
+  /// parsed.
+  ///
+  ///     prefixedIdentifier ::=
+  ///         identifier ('.' identifier)?
   Identifier parsePrefixedIdentifier() {
     return _parsePrefixedIdentifierAfterIdentifier(parseSimpleIdentifier());
   }
 
-  /**
-   * Parse a primary expression. Return the primary expression that was parsed.
-   *
-   *     primary ::=
-   *         thisExpression
-   *       | 'super' unconditionalAssignableSelector
-   *       | functionExpression
-   *       | literal
-   *       | identifier
-   *       | newExpression
-   *       | constObjectExpression
-   *       | '(' expression ')'
-   *       | argumentDefinitionTest
-   *
-   *     literal ::=
-   *         nullLiteral
-   *       | booleanLiteral
-   *       | numericLiteral
-   *       | stringLiteral
-   *       | symbolLiteral
-   *       | mapLiteral
-   *       | listLiteral
-   */
+  /// Parse a primary expression. Return the primary expression that was parsed.
+  ///
+  ///     primary ::=
+  ///         thisExpression
+  ///       | 'super' unconditionalAssignableSelector
+  ///       | functionExpression
+  ///       | literal
+  ///       | identifier
+  ///       | newExpression
+  ///       | constObjectExpression
+  ///       | '(' expression ')'
+  ///       | argumentDefinitionTest
+  ///
+  ///     literal ::=
+  ///         nullLiteral
+  ///       | booleanLiteral
+  ///       | numericLiteral
+  ///       | stringLiteral
+  ///       | symbolLiteral
+  ///       | mapLiteral
+  ///       | listLiteral
   Expression parsePrimaryExpression() {
     if (_matchesIdentifier()) {
       // TODO(brianwilkerson) The code below was an attempt to recover from an
@@ -4646,16 +4388,14 @@
     }
   }
 
-  /**
-   * Parse a redirecting constructor invocation. The flag [hasPeriod] should be
-   * `true` if the `this` is followed by a period. Return the redirecting
-   * constructor invocation that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.THIS`.
-   *
-   *     redirectingConstructorInvocation ::=
-   *         'this' ('.' identifier)? arguments
-   */
+  /// Parse a redirecting constructor invocation. The flag [hasPeriod] should be
+  /// `true` if the `this` is followed by a period. Return the redirecting
+  /// constructor invocation that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.THIS`.
+  ///
+  ///     redirectingConstructorInvocation ::=
+  ///         'this' ('.' identifier)? arguments
   RedirectingConstructorInvocation parseRedirectingConstructorInvocation(
       bool hasPeriod) {
     Token keyword = getAndAdvance();
@@ -4676,14 +4416,12 @@
         keyword, period, constructorName, argumentList);
   }
 
-  /**
-   * Parse a relational expression. Return the relational expression that was
-   * parsed.
-   *
-   *     relationalExpression ::=
-   *         bitwiseOrExpression ('is' '!'? type | 'as' type | relationalOperator bitwiseOrExpression)?
-   *       | 'super' relationalOperator bitwiseOrExpression
-   */
+  /// Parse a relational expression. Return the relational expression that was
+  /// parsed.
+  ///
+  ///     relationalExpression ::=
+  ///         bitwiseOrExpression ('is' '!'? type | 'as' type | relationalOperator bitwiseOrExpression)?
+  ///       | 'super' relationalOperator bitwiseOrExpression
   Expression parseRelationalExpression() {
     if (_currentToken.keyword == Keyword.SUPER &&
         _currentToken.next.type.isRelationalOperator) {
@@ -4714,25 +4452,21 @@
     return expression;
   }
 
-  /**
-   * Parse a rethrow expression. Return the rethrow expression that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.RETHROW`.
-   *
-   *     rethrowExpression ::=
-   *         'rethrow'
-   */
+  /// Parse a rethrow expression. Return the rethrow expression that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.RETHROW`.
+  ///
+  ///     rethrowExpression ::=
+  ///         'rethrow'
   Expression parseRethrowExpression() =>
       astFactory.rethrowExpression(getAndAdvance());
 
-  /**
-   * Parse a return statement. Return the return statement that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.RETURN`.
-   *
-   *     returnStatement ::=
-   *         'return' expression? ';'
-   */
+  /// Parse a return statement. Return the return statement that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.RETURN`.
+  ///
+  ///     returnStatement ::=
+  ///         'return' expression? ';'
   Statement parseReturnStatement() {
     Token returnKeyword = getAndAdvance();
     if (_matches(TokenType.SEMICOLON)) {
@@ -4743,22 +4477,20 @@
     return astFactory.returnStatement(returnKeyword, expression, semicolon);
   }
 
-  /**
-   * Parse a setter. The [commentAndMetadata] is the documentation comment and
-   * metadata to be associated with the declaration. The [externalKeyword] is
-   * the 'external' token. The [staticKeyword] is the static keyword, or `null`
-   * if the setter is not static. The [returnType] is the return type that has
-   * already been parsed, or `null` if there was no return type. Return the
-   * setter that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.SET`.
-   *
-   *     setter ::=
-   *         setterSignature functionBody?
-   *
-   *     setterSignature ::=
-   *         'external'? 'static'? returnType? 'set' identifier formalParameterList
-   */
+  /// Parse a setter. The [commentAndMetadata] is the documentation comment and
+  /// metadata to be associated with the declaration. The [externalKeyword] is
+  /// the 'external' token. The [staticKeyword] is the static keyword, or `null`
+  /// if the setter is not static. The [returnType] is the return type that has
+  /// already been parsed, or `null` if there was no return type. Return the
+  /// setter that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.SET`.
+  ///
+  ///     setter ::=
+  ///         setterSignature functionBody?
+  ///
+  ///     setterSignature ::=
+  ///         'external'? 'static'? returnType? 'set' identifier formalParameterList
   MethodDeclaration parseSetter(CommentAndMetadata commentAndMetadata,
       Token externalKeyword, Token staticKeyword, TypeAnnotation returnType) {
     Token propertyKeyword = getAndAdvance();
@@ -4786,13 +4518,11 @@
         body);
   }
 
-  /**
-   * Parse a shift expression. Return the shift expression that was parsed.
-   *
-   *     shiftExpression ::=
-   *         additiveExpression (shiftOperator additiveExpression)*
-   *       | 'super' (shiftOperator additiveExpression)+
-   */
+  /// Parse a shift expression. Return the shift expression that was parsed.
+  ///
+  ///     shiftExpression ::=
+  ///         additiveExpression (shiftOperator additiveExpression)*
+  ///       | 'super' (shiftOperator additiveExpression)+
   Expression parseShiftExpression() {
     Expression expression;
     if (_currentToken.keyword == Keyword.SUPER &&
@@ -4808,12 +4538,10 @@
     return expression;
   }
 
-  /**
-   * Parse a simple identifier. Return the simple identifier that was parsed.
-   *
-   *     identifier ::=
-   *         IDENTIFIER
-   */
+  /// Parse a simple identifier. Return the simple identifier that was parsed.
+  ///
+  ///     identifier ::=
+  ///         IDENTIFIER
   SimpleIdentifier parseSimpleIdentifier(
       {bool allowKeyword: false, bool isDeclaration: false}) {
     if (_matchesIdentifier() ||
@@ -4824,22 +4552,18 @@
     return createSyntheticIdentifier(isDeclaration: isDeclaration);
   }
 
-  /**
-   * Parse a statement, starting with the given [token]. Return the statement
-   * that was parsed, or `null` if the tokens do not represent a recognizable
-   * statement.
-   */
+  /// Parse a statement, starting with the given [token]. Return the statement
+  /// that was parsed, or `null` if the tokens do not represent a recognizable
+  /// statement.
   Statement parseStatement(Token token) {
     _currentToken = token;
     return parseStatement2();
   }
 
-  /**
-   * Parse a statement. Return the statement that was parsed.
-   *
-   *     statement ::=
-   *         label* nonLabeledStatement
-   */
+  /// Parse a statement. Return the statement that was parsed.
+  ///
+  ///     statement ::=
+  ///         label* nonLabeledStatement
   Statement parseStatement2() {
     if (_treeDepth > _MAX_TREE_DEPTH) {
       throw new _TooDeepTreeError();
@@ -4866,23 +4590,19 @@
     }
   }
 
-  /**
-   * Parse a sequence of statements, starting with the given [token]. Return the
-   * statements that were parsed, or `null` if the tokens do not represent a
-   * recognizable sequence of statements.
-   */
+  /// Parse a sequence of statements, starting with the given [token]. Return
+  /// the statements that were parsed, or `null` if the tokens do not represent
+  /// a recognizable sequence of statements.
   List<Statement> parseStatements(Token token) {
     _currentToken = token;
     return _parseStatementList();
   }
 
-  /**
-   * Parse a string literal. Return the string literal that was parsed.
-   *
-   *     stringLiteral ::=
-   *         MULTI_LINE_STRING+
-   *       | SINGLE_LINE_STRING+
-   */
+  /// Parse a string literal. Return the string literal that was parsed.
+  ///
+  ///     stringLiteral ::=
+  ///         MULTI_LINE_STRING+
+  ///       | SINGLE_LINE_STRING+
   StringLiteral parseStringLiteral() {
     if (_matches(TokenType.STRING)) {
       return _parseStringLiteralUnchecked();
@@ -4891,15 +4611,13 @@
     return createSyntheticStringLiteral();
   }
 
-  /**
-   * Parse a super constructor invocation. Return the super constructor
-   * invocation that was parsed.
-   *
-   * This method assumes that the current token matches [Keyword.SUPER].
-   *
-   *     superConstructorInvocation ::=
-   *         'super' ('.' identifier)? arguments
-   */
+  /// Parse a super constructor invocation. Return the super constructor
+  /// invocation that was parsed.
+  ///
+  /// This method assumes that the current token matches [Keyword.SUPER].
+  ///
+  ///     superConstructorInvocation ::=
+  ///         'super' ('.' identifier)? arguments
   SuperConstructorInvocation parseSuperConstructorInvocation() {
     Token keyword = getAndAdvance();
     Token period = null;
@@ -4913,18 +4631,16 @@
         keyword, period, constructorName, argumentList);
   }
 
-  /**
-   * Parse a switch statement. Return the switch statement that was parsed.
-   *
-   *     switchStatement ::=
-   *         'switch' '(' expression ')' '{' switchCase* defaultCase? '}'
-   *
-   *     switchCase ::=
-   *         label* ('case' expression ':') statements
-   *
-   *     defaultCase ::=
-   *         label* 'default' ':' statements
-   */
+  /// Parse a switch statement. Return the switch statement that was parsed.
+  ///
+  ///     switchStatement ::=
+  ///         'switch' '(' expression ')' '{' switchCase* defaultCase? '}'
+  ///
+  ///     switchCase ::=
+  ///         label* ('case' expression ':') statements
+  ///
+  ///     defaultCase ::=
+  ///         label* 'default' ':' statements
   SwitchStatement parseSwitchStatement() {
     bool wasInSwitch = _inSwitch;
     _inSwitch = true;
@@ -5005,14 +4721,12 @@
     }
   }
 
-  /**
-   * Parse a symbol literal. Return the symbol literal that was parsed.
-   *
-   * This method assumes that the current token matches [TokenType.HASH].
-   *
-   *     symbolLiteral ::=
-   *         '#' identifier ('.' identifier)*
-   */
+  /// Parse a symbol literal. Return the symbol literal that was parsed.
+  ///
+  /// This method assumes that the current token matches [TokenType.HASH].
+  ///
+  ///     symbolLiteral ::=
+  ///         '#' identifier ('.' identifier)*
   SymbolLiteral parseSymbolLiteral() {
     Token poundSign = getAndAdvance();
     List<Token> components = <Token>[];
@@ -5038,14 +4752,12 @@
     return astFactory.symbolLiteral(poundSign, components);
   }
 
-  /**
-   * Parse a throw expression. Return the throw expression that was parsed.
-   *
-   * This method assumes that the current token matches [Keyword.THROW].
-   *
-   *     throwExpression ::=
-   *         'throw' expression
-   */
+  /// Parse a throw expression. Return the throw expression that was parsed.
+  ///
+  /// This method assumes that the current token matches [Keyword.THROW].
+  ///
+  ///     throwExpression ::=
+  ///         'throw' expression
   Expression parseThrowExpression() {
     Token keyword = getAndAdvance();
     TokenType type = _currentToken.type;
@@ -5058,14 +4770,12 @@
     return astFactory.throwExpression(keyword, expression);
   }
 
-  /**
-   * Parse a throw expression. Return the throw expression that was parsed.
-   *
-   * This method assumes that the current token matches [Keyword.THROW].
-   *
-   *     throwExpressionWithoutCascade ::=
-   *         'throw' expressionWithoutCascade
-   */
+  /// Parse a throw expression. Return the throw expression that was parsed.
+  ///
+  /// This method assumes that the current token matches [Keyword.THROW].
+  ///
+  ///     throwExpressionWithoutCascade ::=
+  ///         'throw' expressionWithoutCascade
   Expression parseThrowExpressionWithoutCascade() {
     Token keyword = getAndAdvance();
     TokenType type = _currentToken.type;
@@ -5078,24 +4788,22 @@
     return astFactory.throwExpression(keyword, expression);
   }
 
-  /**
-   * Parse a try statement. Return the try statement that was parsed.
-   *
-   * This method assumes that the current token matches [Keyword.TRY].
-   *
-   *     tryStatement ::=
-   *         'try' block (onPart+ finallyPart? | finallyPart)
-   *
-   *     onPart ::=
-   *         catchPart block
-   *       | 'on' type catchPart? block
-   *
-   *     catchPart ::=
-   *         'catch' '(' identifier (',' identifier)? ')'
-   *
-   *     finallyPart ::=
-   *         'finally' block
-   */
+  /// Parse a try statement. Return the try statement that was parsed.
+  ///
+  /// This method assumes that the current token matches [Keyword.TRY].
+  ///
+  ///     tryStatement ::=
+  ///         'try' block (onPart+ finallyPart? | finallyPart)
+  ///
+  ///     onPart ::=
+  ///         catchPart block
+  ///       | 'on' type catchPart? block
+  ///
+  ///     catchPart ::=
+  ///         'catch' '(' identifier (',' identifier)? ')'
+  ///
+  ///     finallyPart ::=
+  ///         'finally' block
   Statement parseTryStatement() {
     Token tryKeyword = getAndAdvance();
     Block body = _parseBlockChecked();
@@ -5147,25 +4855,23 @@
         tryKeyword, body, catchClauses, finallyKeyword, finallyClause);
   }
 
-  /**
-   * Parse a type alias. The [commentAndMetadata] is the metadata to be
-   * associated with the member. Return the type alias that was parsed.
-   *
-   * This method assumes that the current token matches [Keyword.TYPEDEF].
-   *
-   *     typeAlias ::=
-   *         'typedef' typeAliasBody
-   *       | genericTypeAlias
-   *
-   *     typeAliasBody ::=
-   *         functionTypeAlias
-   *
-   *     functionTypeAlias ::=
-   *         functionPrefix typeParameterList? formalParameterList ';'
-   *
-   *     functionPrefix ::=
-   *         returnType? name
-   */
+  /// Parse a type alias. The [commentAndMetadata] is the metadata to be
+  /// associated with the member. Return the type alias that was parsed.
+  ///
+  /// This method assumes that the current token matches [Keyword.TYPEDEF].
+  ///
+  ///     typeAlias ::=
+  ///         'typedef' typeAliasBody
+  ///       | genericTypeAlias
+  ///
+  ///     typeAliasBody ::=
+  ///         functionTypeAlias
+  ///
+  ///     functionTypeAlias ::=
+  ///         functionPrefix typeParameterList? formalParameterList ';'
+  ///
+  ///     functionPrefix ::=
+  ///         returnType? name
   TypeAlias parseTypeAlias(CommentAndMetadata commentAndMetadata) {
     Token keyword = getAndAdvance();
     if (_matchesIdentifier()) {
@@ -5186,13 +4892,11 @@
     return _parseFunctionTypeAlias(commentAndMetadata, keyword);
   }
 
-  /**
-   * Parse a type.
-   *
-   *     type ::=
-   *         typeWithoutFunction
-   *       | functionType
-   */
+  /// Parse a type.
+  ///
+  ///     type ::=
+  ///         typeWithoutFunction
+  ///       | functionType
   TypeAnnotation parseTypeAnnotation(bool inExpression) {
     TypeAnnotation type = null;
     if (_atGenericFunctionTypeAfterReturnType(_currentToken)) {
@@ -5207,18 +4911,16 @@
     return type;
   }
 
-  /**
-   * Parse a list of type arguments. Return the type argument list that was
-   * parsed.
-   *
-   * This method assumes that the current token matches `TokenType.LT`.
-   *
-   *     typeArguments ::=
-   *         '<' typeList '>'
-   *
-   *     typeList ::=
-   *         type (',' type)*
-   */
+  /// Parse a list of type arguments. Return the type argument list that was
+  /// parsed.
+  ///
+  /// This method assumes that the current token matches `TokenType.LT`.
+  ///
+  ///     typeArguments ::=
+  ///         '<' typeList '>'
+  ///
+  ///     typeList ::=
+  ///         type (',' type)*
   TypeArgumentList parseTypeArgumentList() {
     Token leftBracket = getAndAdvance();
     List<TypeAnnotation> arguments = <TypeAnnotation>[
@@ -5231,26 +4933,22 @@
     return astFactory.typeArgumentList(leftBracket, arguments, rightBracket);
   }
 
-  /**
-   * Parse a type which is not void and is not a function type. Return the type
-   * that was parsed.
-   *
-   *     typeNotVoidWithoutFunction ::=
-   *         qualified typeArguments?
-   */
+  /// Parse a type which is not void and is not a function type. Return the type
+  /// that was parsed.
+  ///
+  ///     typeNotVoidWithoutFunction ::=
+  ///         qualified typeArguments?
   // TODO(eernst): Rename this to `parseTypeNotVoidWithoutFunction`?
   // Apparently,  it was named `parseTypeName` before type arguments existed.
   TypeName parseTypeName(bool inExpression) {
     return _parseTypeName(inExpression);
   }
 
-  /**
-   * Parse a type which is not `void`.
-   *
-   *     typeNotVoid ::=
-   *         functionType
-   *       | typeNotVoidWithoutFunction
-   */
+  /// Parse a type which is not `void`.
+  ///
+  ///     typeNotVoid ::=
+  ///         functionType
+  ///       | typeNotVoidWithoutFunction
   TypeAnnotation parseTypeNotVoid(bool inExpression) {
     TypeAnnotation type = null;
     if (_atGenericFunctionTypeAfterReturnType(_currentToken)) {
@@ -5269,12 +4967,10 @@
     return type;
   }
 
-  /**
-   * Parse a type parameter. Return the type parameter that was parsed.
-   *
-   *     typeParameter ::=
-   *         metadata name ('extends' bound)?
-   */
+  /// Parse a type parameter. Return the type parameter that was parsed.
+  ///
+  ///     typeParameter ::=
+  ///         metadata name ('extends' bound)?
   TypeParameter parseTypeParameter() {
     CommentAndMetadata commentAndMetadata = parseCommentAndMetadata();
     SimpleIdentifier name = parseSimpleIdentifier(isDeclaration: true);
@@ -5288,15 +4984,13 @@
         commentAndMetadata.metadata, name, null, null);
   }
 
-  /**
-   * Parse a list of type parameters. Return the list of type parameters that
-   * were parsed.
-   *
-   * This method assumes that the current token matches `TokenType.LT`.
-   *
-   *     typeParameterList ::=
-   *         '<' typeParameter (',' typeParameter)* '>'
-   */
+  /// Parse a list of type parameters. Return the list of type parameters that
+  /// were parsed.
+  ///
+  /// This method assumes that the current token matches `TokenType.LT`.
+  ///
+  ///     typeParameterList ::=
+  ///         '<' typeParameter (',' typeParameter)* '>'
   TypeParameterList parseTypeParameterList() {
     Token leftBracket = getAndAdvance();
     List<TypeParameter> typeParameters = <TypeParameter>[parseTypeParameter()];
@@ -5308,13 +5002,11 @@
         leftBracket, typeParameters, rightBracket);
   }
 
-  /**
-   * Parse a type which is not a function type.
-   *
-   *     typeWithoutFunction ::=
-   *         `void`
-   *       | typeNotVoidWithoutFunction
-   */
+  /// Parse a type which is not a function type.
+  ///
+  ///     typeWithoutFunction ::=
+  ///         `void`
+  ///       | typeNotVoidWithoutFunction
   TypeAnnotation parseTypeWithoutFunction(bool inExpression) {
     if (_currentToken.keyword == Keyword.VOID) {
       return astFactory.typeName(
@@ -5324,17 +5016,15 @@
     }
   }
 
-  /**
-   * Parse a unary expression. Return the unary expression that was parsed.
-   *
-   *     unaryExpression ::=
-   *         prefixOperator unaryExpression
-   *       | awaitExpression
-   *       | postfixExpression
-   *       | unaryOperator 'super'
-   *       | '-' 'super'
-   *       | incrementOperator assignableExpression
-   */
+  /// Parse a unary expression. Return the unary expression that was parsed.
+  ///
+  ///     unaryExpression ::=
+  ///         prefixOperator unaryExpression
+  ///       | awaitExpression
+  ///       | postfixExpression
+  ///       | unaryOperator 'super'
+  ///       | '-' 'super'
+  ///       | incrementOperator assignableExpression
   Expression parseUnaryExpression() {
     TokenType type = _currentToken.type;
     if (type == TokenType.MINUS ||
@@ -5400,13 +5090,11 @@
     return parsePostfixExpression();
   }
 
-  /**
-   * Parse a variable declaration. Return the variable declaration that was
-   * parsed.
-   *
-   *     variableDeclaration ::=
-   *         identifier ('=' expression)?
-   */
+  /// Parse a variable declaration. Return the variable declaration that was
+  /// parsed.
+  ///
+  ///     variableDeclaration ::=
+  ///         identifier ('=' expression)?
   VariableDeclaration parseVariableDeclaration() {
     // TODO(paulberry): prior to the fix for bug 23204, we permitted
     // annotations before variable declarations (e.g. "String @deprecated s;").
@@ -5427,14 +5115,12 @@
     return astFactory.variableDeclaration(name, equals, initializer);
   }
 
-  /**
-   * Parse a variable declaration list. The [commentAndMetadata] is the metadata
-   * to be associated with the variable declaration list. Return the variable
-   * declaration list that was parsed.
-   *
-   *     variableDeclarationList ::=
-   *         finalConstVarOrType variableDeclaration (',' variableDeclaration)*
-   */
+  /// Parse a variable declaration list. The [commentAndMetadata] is the
+  /// metadata to be associated with the variable declaration list. Return the
+  /// variable declaration list that was parsed.
+  ///
+  ///     variableDeclarationList ::=
+  ///         finalConstVarOrType variableDeclaration (',' variableDeclaration)*
   VariableDeclarationList parseVariableDeclarationListAfterMetadata(
       CommentAndMetadata commentAndMetadata) {
     FinalConstVarOrType holder = parseFinalConstVarOrType(false);
@@ -5442,17 +5128,15 @@
         commentAndMetadata, holder.keyword, holder.type);
   }
 
-  /**
-   * Parse a variable declaration list. The [commentAndMetadata] is the metadata
-   * to be associated with the variable declaration list, or `null` if there is
-   * no attempt at parsing the comment and metadata. The [keyword] is the token
-   * representing the 'final', 'const' or 'var' keyword, or `null` if there is
-   * no keyword. The [type] is the type of the variables in the list. Return the
-   * variable declaration list that was parsed.
-   *
-   *     variableDeclarationList ::=
-   *         finalConstVarOrType variableDeclaration (',' variableDeclaration)*
-   */
+  /// Parse a variable declaration list. The [commentAndMetadata] is the
+  /// metadata to be associated with the variable declaration list, or `null`
+  /// if there is no attempt at parsing the comment and metadata. The [keyword]
+  /// is the token representing the 'final', 'const' or 'var' keyword, or
+  /// `null` if there is no keyword. The [type] is the type of the variables in
+  /// the list. Return the variable declaration list that was parsed.
+  ///
+  ///     variableDeclarationList ::=
+  ///         finalConstVarOrType variableDeclaration (',' variableDeclaration)*
   VariableDeclarationList parseVariableDeclarationListAfterType(
       CommentAndMetadata commentAndMetadata,
       Token keyword,
@@ -5472,15 +5156,13 @@
         commentAndMetadata?.metadata, keyword, type, variables);
   }
 
-  /**
-   * Parse a variable declaration statement. The [commentAndMetadata] is the
-   * metadata to be associated with the variable declaration statement, or
-   * `null` if there is no attempt at parsing the comment and metadata. Return
-   * the variable declaration statement that was parsed.
-   *
-   *     variableDeclarationStatement ::=
-   *         variableDeclarationList ';'
-   */
+  /// Parse a variable declaration statement. The [commentAndMetadata] is the
+  /// metadata to be associated with the variable declaration statement, or
+  /// `null` if there is no attempt at parsing the comment and metadata. Return
+  /// the variable declaration statement that was parsed.
+  ///
+  ///     variableDeclarationStatement ::=
+  ///         variableDeclarationList ';'
   VariableDeclarationStatement parseVariableDeclarationStatementAfterMetadata(
       CommentAndMetadata commentAndMetadata) {
     //    Token startToken = currentToken;
@@ -5496,14 +5178,12 @@
     return astFactory.variableDeclarationStatement(variableList, semicolon);
   }
 
-  /**
-   * Parse a while statement. Return the while statement that was parsed.
-   *
-   * This method assumes that the current token matches [Keyword.WHILE].
-   *
-   *     whileStatement ::=
-   *         'while' '(' expression ')' statement
-   */
+  /// Parse a while statement. Return the while statement that was parsed.
+  ///
+  /// This method assumes that the current token matches [Keyword.WHILE].
+  ///
+  ///     whileStatement ::=
+  ///         'while' '(' expression ')' statement
   Statement parseWhileStatement() {
     bool wasInLoop = _inLoop;
     _inLoop = true;
@@ -5520,14 +5200,12 @@
     }
   }
 
-  /**
-   * Parse a with clause. Return the with clause that was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.WITH`.
-   *
-   *     withClause ::=
-   *         'with' typeName (',' typeName)*
-   */
+  /// Parse a with clause. Return the with clause that was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.WITH`.
+  ///
+  ///     withClause ::=
+  ///         'with' typeName (',' typeName)*
   WithClause parseWithClause() {
     Token withKeyword = getAndAdvance();
     List<TypeName> types = <TypeName>[];
@@ -5538,14 +5216,12 @@
     return astFactory.withClause(withKeyword, types);
   }
 
-  /**
-   * Parse a yield statement. Return the yield statement that was parsed.
-   *
-   * This method assumes that the current token matches [Keyword.YIELD].
-   *
-   *     yieldStatement ::=
-   *         'yield' '*'? expression ';'
-   */
+  /// Parse a yield statement. Return the yield statement that was parsed.
+  ///
+  /// This method assumes that the current token matches [Keyword.YIELD].
+  ///
+  ///     yieldStatement ::=
+  ///         'yield' '*'? expression ';'
   YieldStatement parseYieldStatement() {
     Token yieldToken = getAndAdvance();
     Token star = null;
@@ -5557,14 +5233,12 @@
     return astFactory.yieldStatement(yieldToken, star, expression, semicolon);
   }
 
-  /**
-   * Parse a formal parameter list, starting at the [startToken], without
-   * actually creating a formal parameter list or changing the current token.
-   * Return the token following the parameter list that was parsed, or `null`
-   * if the given token is not the first token in a valid parameter list.
-   *
-   * This method must be kept in sync with [parseFormalParameterList].
-   */
+  /// Parse a formal parameter list, starting at the [startToken], without
+  /// actually creating a formal parameter list or changing the current token.
+  /// Return the token following the parameter list that was parsed, or `null`
+  /// if the given token is not the first token in a valid parameter list.
+  ///
+  /// This method must be kept in sync with [parseFormalParameterList].
   Token skipFormalParameterList(Token startToken) {
     if (!_tokenMatches(startToken, TokenType.OPEN_PAREN)) {
       return null;
@@ -5572,16 +5246,14 @@
     return (startToken as BeginToken).endToken?.next;
   }
 
-  /**
-   * Parse the portion of a generic function type after the return type,
-   * starting at the [startToken], without actually creating a generic function
-   * type or changing the current token. Return the token following the generic
-   * function type that was parsed, or `null` if the given token is not the
-   * first token in a valid generic function type.
-   *
-   * This method must be kept in sync with
-   * [parseGenericFunctionTypeAfterReturnType].
-   */
+  /// Parse the portion of a generic function type after the return type,
+  /// starting at the [startToken], without actually creating a generic function
+  /// type or changing the current token. Return the token following the generic
+  /// function type that was parsed, or `null` if the given token is not the
+  /// first token in a valid generic function type.
+  ///
+  /// This method must be kept in sync with
+  /// [parseGenericFunctionTypeAfterReturnType].
   Token skipGenericFunctionTypeAfterReturnType(Token startToken) {
     Token next = startToken.next; // Skip 'Function'
     if (_tokenMatches(next, TokenType.LT)) {
@@ -5593,17 +5265,16 @@
     return skipFormalParameterList(next);
   }
 
-  /**
-   * Parse a prefixed identifier, starting at the [startToken], without actually
-   * creating a prefixed identifier or changing the current token. Return the
-   * token following the prefixed identifier that was parsed, or `null` if the
-   * given token is not the first token in a valid prefixed identifier.
-   *
-   * This method must be kept in sync with [parsePrefixedIdentifier].
-   *
-   *     prefixedIdentifier ::=
-   *         identifier ('.' identifier)?
-   */
+  /// Parse a prefixed identifier, starting at the [startToken], without
+  /// actually creating a prefixed identifier or changing the current token.
+  /// Return the token following the prefixed identifier that was parsed, or
+  /// `null` if the given token is not the first token in a valid prefixed
+  /// identifier.
+  ///
+  /// This method must be kept in sync with [parsePrefixedIdentifier].
+  ///
+  ///     prefixedIdentifier ::=
+  ///         identifier ('.' identifier)?
   Token skipPrefixedIdentifier(Token startToken) {
     Token token = skipSimpleIdentifier(startToken);
     if (token == null) {
@@ -5625,17 +5296,15 @@
     return null;
   }
 
-  /**
-   * Parse a simple identifier, starting at the [startToken], without actually
-   * creating a simple identifier or changing the current token. Return the
-   * token following the simple identifier that was parsed, or `null` if the
-   * given token is not the first token in a valid simple identifier.
-   *
-   * This method must be kept in sync with [parseSimpleIdentifier].
-   *
-   *     identifier ::=
-   *         IDENTIFIER
-   */
+  /// Parse a simple identifier, starting at the [startToken], without actually
+  /// creating a simple identifier or changing the current token. Return the
+  /// token following the simple identifier that was parsed, or `null` if the
+  /// given token is not the first token in a valid simple identifier.
+  ///
+  /// This method must be kept in sync with [parseSimpleIdentifier].
+  ///
+  ///     identifier ::=
+  ///         IDENTIFIER
   Token skipSimpleIdentifier(Token startToken) {
     if (_tokenMatches(startToken, TokenType.IDENTIFIER) ||
         _tokenMatchesPseudoKeyword(startToken)) {
@@ -5644,18 +5313,16 @@
     return null;
   }
 
-  /**
-   * Parse a string literal, starting at the [startToken], without actually
-   * creating a string literal or changing the current token. Return the token
-   * following the string literal that was parsed, or `null` if the given token
-   * is not the first token in a valid string literal.
-   *
-   * This method must be kept in sync with [parseStringLiteral].
-   *
-   *     stringLiteral ::=
-   *         MULTI_LINE_STRING+
-   *       | SINGLE_LINE_STRING+
-   */
+  /// Parse a string literal, starting at the [startToken], without actually
+  /// creating a string literal or changing the current token. Return the token
+  /// following the string literal that was parsed, or `null` if the given token
+  /// is not the first token in a valid string literal.
+  ///
+  /// This method must be kept in sync with [parseStringLiteral].
+  ///
+  ///     stringLiteral ::=
+  ///         MULTI_LINE_STRING+
+  ///       | SINGLE_LINE_STRING+
   Token skipStringLiteral(Token startToken) {
     Token token = startToken;
     while (token != null && _tokenMatches(token, TokenType.STRING)) {
@@ -5672,14 +5339,12 @@
     return token;
   }
 
-  /**
-   * Parse a type annotation, starting at the [startToken], without actually
-   * creating a type annotation or changing the current token. Return the token
-   * following the type annotation that was parsed, or `null` if the given token
-   * is not the first token in a valid type annotation.
-   *
-   * This method must be kept in sync with [parseTypeAnnotation].
-   */
+  /// Parse a type annotation, starting at the [startToken], without actually
+  /// creating a type annotation or changing the current token. Return the token
+  /// following the type annotation that was parsed, or `null` if the given
+  /// token is not the first token in a valid type annotation.
+  ///
+  /// This method must be kept in sync with [parseTypeAnnotation].
   Token skipTypeAnnotation(Token startToken) {
     Token next = null;
     if (_atGenericFunctionTypeAfterReturnType(startToken)) {
@@ -5694,21 +5359,19 @@
     return next;
   }
 
-  /**
-   * Parse a list of type arguments, starting at the [startToken], without
-   * actually creating a type argument list or changing the current token.
-   * Return the token following the type argument list that was parsed, or
-   * `null` if the given token is not the first token in a valid type argument
-   * list.
-   *
-   * This method must be kept in sync with [parseTypeArgumentList].
-   *
-   *     typeArguments ::=
-   *         '<' typeList '>'
-   *
-   *     typeList ::=
-   *         type (',' type)*
-   */
+  /// Parse a list of type arguments, starting at the [startToken], without
+  /// actually creating a type argument list or changing the current token.
+  /// Return the token following the type argument list that was parsed, or
+  /// `null` if the given token is not the first token in a valid type argument
+  /// list.
+  ///
+  /// This method must be kept in sync with [parseTypeArgumentList].
+  ///
+  ///     typeArguments ::=
+  ///         '<' typeList '>'
+  ///
+  ///     typeList ::=
+  ///         type (',' type)*
   Token skipTypeArgumentList(Token startToken) {
     Token token = startToken;
     if (!_tokenMatches(token, TokenType.LT)) {
@@ -5740,17 +5403,15 @@
     return null;
   }
 
-  /**
-   * Parse a type name, starting at the [startToken], without actually creating
-   * a type name or changing the current token. Return the token following the
-   * type name that was parsed, or `null` if the given token is not the first
-   * token in a valid type name.
-   *
-   * This method must be kept in sync with [parseTypeName].
-   *
-   *     type ::=
-   *         qualified typeArguments?
-   */
+  /// Parse a type name, starting at the [startToken], without actually creating
+  /// a type name or changing the current token. Return the token following the
+  /// type name that was parsed, or `null` if the given token is not the first
+  /// token in a valid type name.
+  ///
+  /// This method must be kept in sync with [parseTypeName].
+  ///
+  ///     type ::=
+  ///         qualified typeArguments?
   Token skipTypeName(Token startToken) {
     Token token = skipPrefixedIdentifier(startToken);
     if (token == null) {
@@ -5762,14 +5423,13 @@
     return token;
   }
 
-  /**
-   * Parse a type parameter list, starting at the [startToken], without actually
-   * creating a type parameter list or changing the current token. Return the
-   * token following the type parameter list that was parsed, or `null` if the
-   * given token is not the first token in a valid type parameter list.
-   *
-   * This method must be kept in sync with [parseTypeParameterList].
-   */
+  /// Parse a type parameter list, starting at the [startToken], without
+  /// actually creating a type parameter list or changing the current token.
+  /// Return the token following the type parameter list that was parsed, or
+  /// `null` if the given token is not the first token in a valid type parameter
+  /// list.
+  ///
+  /// This method must be kept in sync with [parseTypeParameterList].
   Token skipTypeParameterList(Token startToken) {
     if (!_tokenMatches(startToken, TokenType.LT)) {
       return null;
@@ -5792,14 +5452,12 @@
     return null;
   }
 
-  /**
-   * Parse a typeWithoutFunction, starting at the [startToken], without actually
-   * creating a TypeAnnotation or changing the current token. Return the token
-   * following the typeWithoutFunction that was parsed, or `null` if the given
-   * token is not the first token in a valid typeWithoutFunction.
-   *
-   * This method must be kept in sync with [parseTypeWithoutFunction].
-   */
+  /// Parse a typeWithoutFunction, starting at the [startToken], without
+  /// actually creating a TypeAnnotation or changing the current token. Return
+  /// the token following the typeWithoutFunction that was parsed, or `null` if
+  /// the given token is not the first token in a valid typeWithoutFunction.
+  ///
+  /// This method must be kept in sync with [parseTypeWithoutFunction].
   Token skipTypeWithoutFunction(Token startToken) {
     if (startToken.keyword == Keyword.VOID) {
       return startToken.next;
@@ -5808,20 +5466,16 @@
     }
   }
 
-  /**
-   * Advance to the next token in the token stream.
-   */
+  /// Advance to the next token in the token stream.
   void _advance() {
     _currentToken = _currentToken.next;
   }
 
-  /**
-   * Append the character equivalent of the given [codePoint] to the given
-   * [builder]. Use the [startIndex] and [endIndex] to report an error, and
-   * don't append anything to the builder, if the code point is invalid. The
-   * [escapeSequence] is the escape sequence that was parsed to produce the
-   * code point (used for error reporting).
-   */
+  /// Append the character equivalent of the given [codePoint] to the given
+  /// [builder]. Use the [startIndex] and [endIndex] to report an error, and
+  /// don't append anything to the builder, if the code point is invalid. The
+  /// [escapeSequence] is the escape sequence that was parsed to produce the
+  /// code point (used for error reporting).
   void _appendCodePoint(StringBuffer buffer, String source, int codePoint,
       int startIndex, int endIndex) {
     if (codePoint < 0 || codePoint > Character.MAX_CODE_POINT) {
@@ -5837,10 +5491,8 @@
     }
   }
 
-  /**
-   * Return `true` if we are positioned at the keyword 'Function' in a generic
-   * function type alias.
-   */
+  /// Return `true` if we are positioned at the keyword 'Function' in a generic
+  /// function type alias.
   bool _atGenericFunctionTypeAfterReturnType(Token startToken) {
     if (_tokenMatchesKeyword(startToken, Keyword.FUNCTION)) {
       Token next = startToken.next;
@@ -5853,11 +5505,9 @@
     return false;
   }
 
-  /**
-   * Convert the given [method] declaration into the nearest valid top-level
-   * function declaration (that is, the function declaration that most closely
-   * captures the components of the given method declaration).
-   */
+  /// Convert the given [method] declaration into the nearest valid top-level
+  /// function declaration (that is, the function declaration that most closely
+  /// captures the components of the given method declaration).
   FunctionDeclaration _convertToFunctionDeclaration(MethodDeclaration method) =>
       astFactory.functionDeclaration(
           method.documentationComment,
@@ -5869,12 +5519,10 @@
           astFactory.functionExpression(
               method.typeParameters, method.parameters, method.body));
 
-  /**
-   * Return `true` if the current token could be the start of a compilation unit
-   * member. This method is used for recovery purposes to decide when to stop
-   * skipping tokens after finding an error while parsing a compilation unit
-   * member.
-   */
+  /// Return `true` if the current token could be the start of a compilation
+  /// unit member. This method is used for recovery purposes to decide when to
+  /// stop skipping tokens after finding an error while parsing a compilation
+  /// unit member.
   bool _couldBeStartOfCompilationUnitMember() {
     Keyword keyword = _currentToken.keyword;
     Token next = _currentToken.next;
@@ -5921,23 +5569,17 @@
     return false;
   }
 
-  /**
-   * Return a synthetic token representing the given [keyword].
-   */
+  /// Return a synthetic token representing the given [keyword].
   Token _createSyntheticKeyword(Keyword keyword) =>
       _injectToken(new SyntheticKeywordToken(keyword, _currentToken.offset));
 
-  /**
-   * Return a synthetic token with the given [type].
-   */
+  /// Return a synthetic token with the given [type].
   Token _createSyntheticToken(TokenType type) =>
       _injectToken(new StringToken(type, "", _currentToken.offset));
 
-  /**
-   * Create and return a new token with the given [type]. The token will replace
-   * the first portion of the given [token], so it will have the same offset and
-   * will have any comments that might have preceeded the token.
-   */
+  /// Create and return a new token with the given [type]. The token will
+  /// replace the first portion of the given [token], so it will have the same
+  /// offset and will have any comments that might have preceeded the token.
   Token _createToken(Token token, TokenType type, {bool isBegin: false}) {
     CommentToken comments = token.precedingComments;
     if (comments == null) {
@@ -5951,23 +5593,21 @@
     return new Token(type, token.offset, comments);
   }
 
-  /**
-   * Check that the given [expression] is assignable and report an error if it
-   * isn't.
-   *
-   *     assignableExpression ::=
-   *         primary (arguments* assignableSelector)+
-   *       | 'super' unconditionalAssignableSelector
-   *       | identifier
-   *
-   *     unconditionalAssignableSelector ::=
-   *         '[' expression ']'
-   *       | '.' identifier
-   *
-   *     assignableSelector ::=
-   *         unconditionalAssignableSelector
-   *       | '?.' identifier
-   */
+  /// Check that the given [expression] is assignable and report an error if it
+  /// isn't.
+  ///
+  ///     assignableExpression ::=
+  ///         primary (arguments* assignableSelector)+
+  ///       | 'super' unconditionalAssignableSelector
+  ///       | identifier
+  ///
+  ///     unconditionalAssignableSelector ::=
+  ///         '[' expression ']'
+  ///       | '.' identifier
+  ///
+  ///     assignableSelector ::=
+  ///         unconditionalAssignableSelector
+  ///       | '?.' identifier
   void _ensureAssignable(Expression expression) {
     if (expression != null && !expression.isAssignable) {
       _reportErrorForCurrentToken(
@@ -5975,16 +5615,14 @@
     }
   }
 
-  /**
-   * If the current token has the expected type, return it after advancing to
-   * the next token. Otherwise report an error and return the current token
-   * without advancing.
-   *
-   * Note that the method [_expectGt] should be used if the argument to this
-   * method would be [TokenType.GT].
-   *
-   * The [type] is the type of token that is expected.
-   */
+  /// If the current token has the expected type, return it after advancing to
+  /// the next token. Otherwise report an error and return the current token
+  /// without advancing.
+  ///
+  /// Note that the method [_expectGt] should be used if the argument to this
+  /// method would be [TokenType.GT].
+  ///
+  /// The [type] is the type of token that is expected.
   Token _expect(TokenType type) {
     if (_matches(type)) {
       return getAndAdvance();
@@ -6006,10 +5644,9 @@
     return _createSyntheticToken(type);
   }
 
-  /**
-   * If the current token has the type [TokenType.GT], return it after advancing
-   * to the next token. Otherwise report an error and create a synthetic token.
-   */
+  /// If the current token has the type [TokenType.GT], return it after
+  /// advancing to the next token. Otherwise report an error and create a
+  /// synthetic token.
   Token _expectGt() {
     if (_matchesGt()) {
       return getAndAdvance();
@@ -6019,11 +5656,9 @@
     return _createSyntheticToken(TokenType.GT);
   }
 
-  /**
-   * If the current token is a keyword matching the given [keyword], return it
-   * after advancing to the next token. Otherwise report an error and return the
-   * current token without advancing.
-   */
+  /// If the current token is a keyword matching the given [keyword], return it
+  /// after advancing to the next token. Otherwise report an error and return
+  /// the current token without advancing.
   Token _expectKeyword(Keyword keyword) {
     if (_matchesKeyword(keyword)) {
       return getAndAdvance();
@@ -6035,11 +5670,9 @@
     return _currentToken;
   }
 
-  /**
-   * Search the given list of [ranges] for a range that contains the given
-   * [index]. Return the range that was found, or `null` if none of the ranges
-   * contain the index.
-   */
+  /// Search the given list of [ranges] for a range that contains the given
+  /// [index]. Return the range that was found, or `null` if none of the ranges
+  /// contain the index.
   List<int> _findRange(List<List<int>> ranges, int index) {
     int rangeCount = ranges.length;
     for (int i = 0; i < rangeCount; i++) {
@@ -6053,10 +5686,8 @@
     return null;
   }
 
-  /**
-   * Return a list of the ranges of characters in the given [comment] that
-   * should be treated as code blocks.
-   */
+  /// Return a list of the ranges of characters in the given [comment] that
+  /// should be treated as code blocks.
   List<List<int>> _getCodeBlockRanges(String comment) {
     List<List<int>> ranges = <List<int>>[];
     int length = comment.length;
@@ -6118,11 +5749,9 @@
     return ranges;
   }
 
-  /**
-   * Return the end token associated with the given [beginToken], or `null` if
-   * either the given token is not a begin token or it does not have an end
-   * token associated with it.
-   */
+  /// Return the end token associated with the given [beginToken], or `null` if
+  /// either the given token is not a begin token or it does not have an end
+  /// token associated with it.
   Token _getEndToken(Token beginToken) {
     if (beginToken is BeginToken) {
       return beginToken.endToken;
@@ -6130,10 +5759,8 @@
     return null;
   }
 
-  /**
-   * Inject the given [token] into the token stream immediately before the
-   * current token.
-   */
+  /// Inject the given [token] into the token stream immediately before the
+  /// current token.
   Token _injectToken(Token token) {
     Token previous = _currentToken.previous;
     token.setNext(_currentToken);
@@ -6141,9 +5768,7 @@
     return token;
   }
 
-  /**
-   * Return `true` if the given [character] is a valid hexadecimal digit.
-   */
+  /// Return `true` if the given [character] is a valid hexadecimal digit.
   bool _isHexDigit(int character) =>
       (0x30 <= character && character <= 0x39) ||
       (0x41 <= character && character <= 0x46) ||
@@ -6159,13 +5784,11 @@
     return token != null && _tokenMatches(token, TokenType.OPEN_PAREN);
   }
 
-  /**
-   * Return `true` if it looks like we have found the invocation of a named
-   * constructor following the name of the type:
-   * ```
-   * typeArguments? '.' identifier '('
-   * ```
-   */
+  /// Return `true` if it looks like we have found the invocation of a named
+  /// constructor following the name of the type:
+  /// ```
+  /// typeArguments? '.' identifier '('
+  /// ```
   bool _isLikelyNamedInstanceCreation() {
     Token token = skipTypeArgumentList(_currentToken);
     if (token != null && _tokenMatches(token, TokenType.PERIOD)) {
@@ -6177,17 +5800,16 @@
     return false;
   }
 
-  /**
-   * Given that we have just found bracketed text within the given [comment],
-   * look to see whether that text is (a) followed by a parenthesized link
-   * address, (b) followed by a colon, or (c) followed by optional whitespace
-   * and another square bracket. The [rightIndex] is the index of the right
-   * bracket. Return `true` if the bracketed text is followed by a link address.
-   *
-   * This method uses the syntax described by the
-   * <a href="http://daringfireball.net/projects/markdown/syntax">markdown</a>
-   * project.
-   */
+  /// Given that we have just found bracketed text within the given [comment],
+  /// look to see whether that text is (a) followed by a parenthesized link
+  /// address, (b) followed by a colon, or (c) followed by optional whitespace
+  /// and another square bracket. The [rightIndex] is the index of the right
+  /// bracket. Return `true` if the bracketed text is followed by a link
+  /// address.
+  ///
+  /// This method uses the syntax described by the
+  /// <a href="http://daringfireball.net/projects/markdown/syntax">markdown</a>
+  /// project.
   bool _isLinkText(String comment, int rightIndex) {
     int length = comment.length;
     int index = rightIndex + 1;
@@ -6208,10 +5830,8 @@
     return nextChar == 0x5B;
   }
 
-  /**
-   * Return `true` if the given [startToken] appears to be the beginning of an
-   * operator declaration.
-   */
+  /// Return `true` if the given [startToken] appears to be the beginning of an
+  /// operator declaration.
   bool _isOperator(Token startToken) {
     // Accept any operator here, even if it is not user definable.
     if (!startToken.isOperator) {
@@ -6235,10 +5855,8 @@
     return token != null && _tokenMatches(token, TokenType.OPEN_PAREN);
   }
 
-  /**
-   * Return `true` if the [startToken] appears to be the first token of a type
-   * name that is followed by a variable or field formal parameter.
-   */
+  /// Return `true` if the [startToken] appears to be the first token of a type
+  /// name that is followed by a variable or field formal parameter.
   bool _isTypedIdentifier(Token startToken) {
     Token token = skipTypeAnnotation(startToken);
     if (token == null) {
@@ -6258,10 +5876,8 @@
     return false;
   }
 
-  /**
-   * Return `true` if the given [expression] is a primary expression that is
-   * allowed to be an assignable expression without any assignable selector.
-   */
+  /// Return `true` if the given [expression] is a primary expression that is
+  /// allowed to be an assignable expression without any assignable selector.
   bool _isValidAssignableExpression(Expression expression) {
     if (expression is SimpleIdentifier) {
       return true;
@@ -6273,28 +5889,22 @@
     return false;
   }
 
-  /**
-   * Increments the error reporting lock level. If level is more than `0`, then
-   * [reportError] wont report any error.
-   */
+  /// Increments the error reporting lock level. If level is more than `0`, then
+  /// [reportError] wont report any error.
   void _lockErrorListener() {
     _errorListenerLock++;
   }
 
-  /**
-   * Return `true` if the current token has the given [type]. Note that the
-   * method [_matchesGt] should be used if the argument to this method would be
-   * [TokenType.GT].
-   */
+  /// Return `true` if the current token has the given [type]. Note that the
+  /// method [_matchesGt] should be used if the argument to this method would be
+  /// [TokenType.GT].
   bool _matches(TokenType type) => _currentToken.type == type;
 
-  /**
-   * Return `true` if the current token has a type of [TokenType.GT]. Note that
-   * this method, unlike other variants, will modify the token stream if
-   * possible to match desired type. In particular, if the next token is either
-   * a '>>' or '>>>', the token stream will be re-written and `true` will be
-   * returned.
-   */
+  /// Return `true` if the current token has a type of [TokenType.GT]. Note that
+  /// this method, unlike other variants, will modify the token stream if
+  /// possible to match desired type. In particular, if the next token is either
+  /// a '>>' or '>>>', the token stream will be re-written and `true` will be
+  /// returned.
   bool _matchesGt() {
     TokenType currentType = _currentToken.type;
     if (currentType == TokenType.GT) {
@@ -6330,23 +5940,17 @@
     return false;
   }
 
-  /**
-   * Return `true` if the current token is a valid identifier. Valid identifiers
-   * include built-in identifiers (pseudo-keywords).
-   */
+  /// Return `true` if the current token is a valid identifier. Valid
+  /// identifiers include built-in identifiers (pseudo-keywords).
   bool _matchesIdentifier() => _tokenMatchesIdentifier(_currentToken);
 
-  /**
-   * Return `true` if the current token matches the given [keyword].
-   */
+  /// Return `true` if the current token matches the given [keyword].
   bool _matchesKeyword(Keyword keyword) =>
       _tokenMatchesKeyword(_currentToken, keyword);
 
-  /**
-   * If the current token has the given [type], then advance to the next token
-   * and return `true`. Otherwise, return `false` without advancing. This method
-   * should not be invoked with an argument value of [TokenType.GT].
-   */
+  /// If the current token has the given [type], then advance to the next token
+  /// and return `true`. Otherwise, return `false` without advancing. This
+  /// method should not be invoked with an argument value of [TokenType.GT].
   bool _optional(TokenType type) {
     if (_currentToken.type == type) {
       _advance();
@@ -6355,10 +5959,8 @@
     return false;
   }
 
-  /**
-   * Parse an argument list when we need to check for an open paren and recover
-   * when there isn't one. Return the argument list that was parsed.
-   */
+  /// Parse an argument list when we need to check for an open paren and recover
+  /// when there isn't one. Return the argument list that was parsed.
   ArgumentList _parseArgumentListChecked() {
     if (_matches(TokenType.OPEN_PAREN)) {
       return parseArgumentList();
@@ -6371,14 +5973,13 @@
         null, _createSyntheticToken(TokenType.CLOSE_PAREN));
   }
 
-  /**
-   * Parse an assert within a constructor's initializer list. Return the assert.
-   *
-   * This method assumes that the current token matches `Keyword.ASSERT`.
-   *
-   *     assertInitializer ::=
-   *         'assert' '(' expression [',' expression] ')'
-   */
+  /// Parse an assert within a constructor's initializer list. Return the
+  /// assert.
+  ///
+  /// This method assumes that the current token matches `Keyword.ASSERT`.
+  ///
+  ///     assertInitializer ::=
+  ///         'assert' '(' expression [',' expression] ')'
   AssertInitializer _parseAssertInitializer() {
     Token keyword = getAndAdvance();
     Token leftParen = _expect(TokenType.OPEN_PAREN);
@@ -6401,13 +6002,11 @@
         keyword, leftParen, expression, comma, message, rightParen);
   }
 
-  /**
-   * Parse a block when we need to check for an open curly brace and recover
-   * when there isn't one. Return the block that was parsed.
-   *
-   *     block ::=
-   *         '{' statements '}'
-   */
+  /// Parse a block when we need to check for an open curly brace and recover
+  /// when there isn't one. Return the block that was parsed.
+  ///
+  ///     block ::=
+  ///         '{' statements '}'
   Block _parseBlockChecked() {
     if (_matches(TokenType.OPEN_CURLY_BRACKET)) {
       return parseBlock();
@@ -6421,15 +6020,13 @@
         null, _createSyntheticToken(TokenType.CLOSE_CURLY_BRACKET));
   }
 
-  /**
-   * Parse a list of class members. The [className] is the name of the class
-   * whose members are being parsed. The [closingBracket] is the closing bracket
-   * for the class, or `null` if the closing bracket is missing. Return the list
-   * of class members that were parsed.
-   *
-   *     classMembers ::=
-   *         (metadata memberDefinition)*
-   */
+  /// Parse a list of class members. The [className] is the name of the class
+  /// whose members are being parsed. The [closingBracket] is the closing
+  /// bracket for the class, or `null` if the closing bracket is missing.
+  /// Return the list of class members that were parsed.
+  ///
+  ///     classMembers ::=
+  ///         (metadata memberDefinition)*
   List<ClassMember> _parseClassMembers(String className, Token closingBracket) {
     List<ClassMember> members = <ClassMember>[];
     Token memberStart = _currentToken;
@@ -6461,20 +6058,18 @@
     return members;
   }
 
-  /**
-   * Parse a class type alias. The [commentAndMetadata] is the metadata to be
-   * associated with the member. The [abstractKeyword] is the token representing
-   * the 'abstract' keyword. The [classKeyword] is the token representing the
-   * 'class' keyword. The [className] is the name of the alias, and the
-   * [typeParameters] are the type parameters following the name. Return the
-   * class type alias that was parsed.
-   *
-   *     classTypeAlias ::=
-   *         identifier typeParameters? '=' 'abstract'? mixinApplication
-   *
-   *     mixinApplication ::=
-   *         type withClause implementsClause? ';'
-   */
+  /// Parse a class type alias. The [commentAndMetadata] is the metadata to be
+  /// associated with the member. The [abstractKeyword] is the token
+  /// representing the 'abstract' keyword. The [classKeyword] is the token
+  /// representing the 'class' keyword. The [className] is the name of the
+  /// alias, and the [typeParameters] are the type parameters following the
+  /// name. Return the class type alias that was parsed.
+  ///
+  ///     classTypeAlias ::=
+  ///         identifier typeParameters? '=' 'abstract'? mixinApplication
+  ///
+  ///     mixinApplication ::=
+  ///         type withClause implementsClause? ';'
   ClassTypeAlias _parseClassTypeAliasAfterName(
       CommentAndMetadata commentAndMetadata,
       Token abstractKeyword,
@@ -6524,10 +6119,8 @@
         semicolon);
   }
 
-  /**
-   * Parse a list of configurations. Return the configurations that were parsed,
-   * or `null` if there are no configurations.
-   */
+  /// Parse a list of configurations. Return the configurations that were
+  /// parsed, or `null` if there are no configurations.
   List<Configuration> _parseConfigurations() {
     List<Configuration> configurations = null;
     while (_matchesKeyword(Keyword.IF)) {
@@ -6637,20 +6230,18 @@
         body);
   }
 
-  /**
-   * Parse an enum constant declaration. Return the enum constant declaration
-   * that was parsed.
-   *
-   * Specified:
-   *
-   *     enumConstant ::=
-   *         id
-   *
-   * Actual:
-   *
-   *     enumConstant ::=
-   *         metadata id
-   */
+  /// Parse an enum constant declaration. Return the enum constant declaration
+  /// that was parsed.
+  ///
+  /// Specified:
+  ///
+  ///     enumConstant ::=
+  ///         id
+  ///
+  /// Actual:
+  ///
+  ///     enumConstant ::=
+  ///         metadata id
   EnumConstantDeclaration _parseEnumConstantDeclaration() {
     CommentAndMetadata commentAndMetadata = parseCommentAndMetadata();
     SimpleIdentifier name;
@@ -6663,10 +6254,8 @@
         commentAndMetadata.comment, commentAndMetadata.metadata, name);
   }
 
-  /**
-   * Parse a list of formal parameters given that the list starts with the given
-   * [leftParenthesis]. Return the formal parameters that were parsed.
-   */
+  /// Parse a list of formal parameters given that the list starts with the
+  /// given [leftParenthesis]. Return the formal parameters that were parsed.
   FormalParameterList _parseFormalParameterListAfterParen(Token leftParenthesis,
       {bool inFunctionType: false}) {
     if (_matches(TokenType.CLOSE_PAREN)) {
@@ -6837,27 +6426,23 @@
         leftSquareBracket, rightSquareBracket, rightParenthesis);
   }
 
-  /**
-   * Parse a list of formal parameters. Return the formal parameters that were
-   * parsed.
-   *
-   * This method assumes that the current token matches `TokenType.OPEN_PAREN`.
-   */
+  /// Parse a list of formal parameters. Return the formal parameters that were
+  /// parsed.
+  ///
+  /// This method assumes that the current token matches `TokenType.OPEN_PAREN`.
   FormalParameterList _parseFormalParameterListUnchecked(
       {bool inFunctionType: false}) {
     return _parseFormalParameterListAfterParen(getAndAdvance(),
         inFunctionType: inFunctionType);
   }
 
-  /**
-   * Parse a function declaration statement. The [commentAndMetadata] is the
-   * documentation comment and metadata to be associated with the declaration.
-   * The [returnType] is the return type, or `null` if there is no return type.
-   * Return the function declaration statement that was parsed.
-   *
-   *     functionDeclarationStatement ::=
-   *         functionSignature functionBody
-   */
+  /// Parse a function declaration statement. The [commentAndMetadata] is the
+  /// documentation comment and metadata to be associated with the declaration.
+  /// The [returnType] is the return type, or `null` if there is no return type.
+  /// Return the function declaration statement that was parsed.
+  ///
+  ///     functionDeclarationStatement ::=
+  ///         functionSignature functionBody
   Statement _parseFunctionDeclarationStatementAfterReturnType(
       CommentAndMetadata commentAndMetadata, TypeAnnotation returnType) {
     FunctionDeclaration declaration =
@@ -6875,17 +6460,15 @@
     return astFactory.functionDeclarationStatement(declaration);
   }
 
-  /**
-   * Parse a function type alias. The [commentAndMetadata] is the metadata to be
-   * associated with the member. The [keyword] is the token representing the
-   * 'typedef' keyword. Return the function type alias that was parsed.
-   *
-   *     functionTypeAlias ::=
-   *         functionPrefix typeParameterList? formalParameterList ';'
-   *
-   *     functionPrefix ::=
-   *         returnType? name
-   */
+  /// Parse a function type alias. The [commentAndMetadata] is the metadata to
+  /// be associated with the member. The [keyword] is the token representing the
+  /// 'typedef' keyword. Return the function type alias that was parsed.
+  ///
+  ///     functionTypeAlias ::=
+  ///         functionPrefix typeParameterList? formalParameterList ';'
+  ///
+  ///     functionPrefix ::=
+  ///         returnType? name
   FunctionTypeAlias _parseFunctionTypeAlias(
       CommentAndMetadata commentAndMetadata, Token keyword) {
     TypeAnnotation returnType = null;
@@ -6951,12 +6534,10 @@
     }
   }
 
-  /**
-   * Parse the generic method or function's type parameters.
-   *
-   * For backwards compatibility this can optionally use comments.
-   * See [parseGenericMethodComments].
-   */
+  /// Parse the generic method or function's type parameters.
+  ///
+  /// For backwards compatibility this can optionally use comments.
+  /// See [parseGenericMethodComments].
   TypeParameterList _parseGenericMethodTypeParameters() {
     if (_matches(TokenType.LT)) {
       return parseTypeParameterList();
@@ -6964,15 +6545,13 @@
     return null;
   }
 
-  /**
-   * Parse a library name. The [missingNameError] is the error code to be used
-   * if the library name is missing. The [missingNameToken] is the token
-   * associated with the error produced if the library name is missing. Return
-   * the library name that was parsed.
-   *
-   *     libraryName ::=
-   *         libraryIdentifier
-   */
+  /// Parse a library name. The [missingNameError] is the error code to be used
+  /// if the library name is missing. The [missingNameToken] is the token
+  /// associated with the error produced if the library name is missing. Return
+  /// the library name that was parsed.
+  ///
+  ///     libraryName ::=
+  ///         libraryIdentifier
   LibraryIdentifier _parseLibraryName(
       ParserErrorCode missingNameError, Token missingNameToken) {
     if (_matchesIdentifier()) {
@@ -6989,19 +6568,17 @@
         .libraryIdentifier(<SimpleIdentifier>[createSyntheticIdentifier()]);
   }
 
-  /**
-   * Parse a method declaration. The [commentAndMetadata] is the documentation
-   * comment and metadata to be associated with the declaration. The
-   * [externalKeyword] is the 'external' token. The [staticKeyword] is the
-   * static keyword, or `null` if the getter is not static. The [returnType] is
-   * the return type of the method. The [name] is the name of the method. The
-   * [parameters] is the parameters to the method. Return the method declaration
-   * that was parsed.
-   *
-   *     functionDeclaration ::=
-   *         ('external' 'static'?)? functionSignature functionBody
-   *       | 'external'? functionSignature ';'
-   */
+  /// Parse a method declaration. The [commentAndMetadata] is the documentation
+  /// comment and metadata to be associated with the declaration. The
+  /// [externalKeyword] is the 'external' token. The [staticKeyword] is the
+  /// static keyword, or `null` if the getter is not static. The [returnType] is
+  /// the return type of the method. The [name] is the name of the method. The
+  /// [parameters] is the parameters to the method. Return the method
+  /// declaration that was parsed.
+  ///
+  ///     functionDeclaration ::=
+  ///         ('external' 'static'?)? functionSignature functionBody
+  ///       | 'external'? functionSignature ';'
   MethodDeclaration _parseMethodDeclarationAfterParameters(
       CommentAndMetadata commentAndMetadata,
       Token externalKeyword,
@@ -7037,18 +6614,16 @@
         body);
   }
 
-  /**
-   * Parse a method declaration. The [commentAndMetadata] is the documentation
-   * comment and metadata to be associated with the declaration. The
-   * [externalKeyword] is the 'external' token. The [staticKeyword] is the
-   * static keyword, or `null` if the getter is not static. The [returnType] is
-   * the return type of the method. Return the method declaration that was
-   * parsed.
-   *
-   *     functionDeclaration ::=
-   *         'external'? 'static'? functionSignature functionBody
-   *       | 'external'? functionSignature ';'
-   */
+  /// Parse a method declaration. The [commentAndMetadata] is the documentation
+  /// comment and metadata to be associated with the declaration. The
+  /// [externalKeyword] is the 'external' token. The [staticKeyword] is the
+  /// static keyword, or `null` if the getter is not static. The [returnType] is
+  /// the return type of the method. Return the method declaration that was
+  /// parsed.
+  ///
+  ///     functionDeclaration ::=
+  ///         'external'? 'static'? functionSignature functionBody
+  ///       | 'external'? functionSignature ';'
   MethodDeclaration _parseMethodDeclarationAfterReturnType(
       CommentAndMetadata commentAndMetadata,
       Token externalKeyword,
@@ -7084,34 +6659,30 @@
         parameters);
   }
 
-  /**
-   * Parse a class native clause. Return the native clause that was parsed.
-   *
-   * This method assumes that the current token matches `_NATIVE`.
-   *
-   *     classNativeClause ::=
-   *         'native' name
-   */
+  /// Parse a class native clause. Return the native clause that was parsed.
+  ///
+  /// This method assumes that the current token matches `_NATIVE`.
+  ///
+  ///     classNativeClause ::=
+  ///         'native' name
   NativeClause _parseNativeClause() {
     Token keyword = getAndAdvance();
     StringLiteral name = parseStringLiteral();
     return astFactory.nativeClause(keyword, name);
   }
 
-  /**
-   * Parse an operator declaration starting after the 'operator' keyword. The
-   * [commentAndMetadata] is the documentation comment and metadata to be
-   * associated with the declaration. The [externalKeyword] is the 'external'
-   * token. The [returnType] is the return type that has already been parsed, or
-   * `null` if there was no return type. The [operatorKeyword] is the 'operator'
-   * keyword. Return the operator declaration that was parsed.
-   *
-   *     operatorDeclaration ::=
-   *         operatorSignature (';' | functionBody)
-   *
-   *     operatorSignature ::=
-   *         'external'? returnType? 'operator' operator formalParameterList
-   */
+  /// Parse an operator declaration starting after the 'operator' keyword. The
+  /// [commentAndMetadata] is the documentation comment and metadata to be
+  /// associated with the declaration. The [externalKeyword] is the 'external'
+  /// token. The [returnType] is the return type that has already been parsed,
+  /// or `null` if there was no return type. The [operatorKeyword] is the
+  /// 'operator' keyword. Return the operator declaration that was parsed.
+  ///
+  ///     operatorDeclaration ::=
+  ///         operatorSignature (';' | functionBody)
+  ///
+  ///     operatorSignature ::=
+  ///         'external'? returnType? 'operator' operator formalParameterList
   MethodDeclaration _parseOperatorAfterKeyword(
       CommentAndMetadata commentAndMetadata,
       Token externalKeyword,
@@ -7157,10 +6728,8 @@
         body);
   }
 
-  /**
-   * Parse a return type if one is given, otherwise return `null` without
-   * advancing. Return the return type that was parsed.
-   */
+  /// Parse a return type if one is given, otherwise return `null` without
+  /// advancing. Return the return type that was parsed.
   TypeAnnotation _parseOptionalReturnType() {
     Keyword keyword = _currentToken.keyword;
     if (keyword == Keyword.VOID) {
@@ -7198,10 +6767,8 @@
     return null;
   }
 
-  /**
-   * Parse a [TypeArgumentList] if present, otherwise return null.
-   * This also supports the comment form, if enabled: `/*<T>*/`
-   */
+  /// Parse a [TypeArgumentList] if present, otherwise return null.
+  /// This also supports the comment form, if enabled: `/*<T>*/`
   TypeArgumentList _parseOptionalTypeArguments() {
     if (_matches(TokenType.LT)) {
       return parseTypeArgumentList();
@@ -7209,16 +6776,14 @@
     return null;
   }
 
-  /**
-   * Parse a part directive. The [commentAndMetadata] is the metadata to be
-   * associated with the directive. Return the part or part-of directive that
-   * was parsed.
-   *
-   * This method assumes that the current token matches `Keyword.PART`.
-   *
-   *     partDirective ::=
-   *         metadata 'part' stringLiteral ';'
-   */
+  /// Parse a part directive. The [commentAndMetadata] is the metadata to be
+  /// associated with the directive. Return the part or part-of directive that
+  /// was parsed.
+  ///
+  /// This method assumes that the current token matches `Keyword.PART`.
+  ///
+  ///     partDirective ::=
+  ///         metadata 'part' stringLiteral ';'
   Directive _parsePartDirective(CommentAndMetadata commentAndMetadata) {
     Token partKeyword = getAndAdvance();
     StringLiteral partUri = _parseUri();
@@ -7227,17 +6792,15 @@
         commentAndMetadata.metadata, partKeyword, partUri, semicolon);
   }
 
-  /**
-   * Parse a part-of directive. The [commentAndMetadata] is the metadata to be
-   * associated with the directive. Return the part or part-of directive that
-   * was parsed.
-   *
-   * This method assumes that the current token matches [Keyword.PART] and that
-   * the following token matches the identifier 'of'.
-   *
-   *     partOfDirective ::=
-   *         metadata 'part' 'of' identifier ';'
-   */
+  /// Parse a part-of directive. The [commentAndMetadata] is the metadata to be
+  /// associated with the directive. Return the part or part-of directive that
+  /// was parsed.
+  ///
+  /// This method assumes that the current token matches [Keyword.PART] and that
+  /// the following token matches the identifier 'of'.
+  ///
+  ///     partOfDirective ::=
+  ///         metadata 'part' 'of' identifier ';'
   Directive _parsePartOfDirective(CommentAndMetadata commentAndMetadata) {
     Token partKeyword = getAndAdvance();
     Token ofKeyword = getAndAdvance();
@@ -7266,13 +6829,11 @@
         semicolon);
   }
 
-  /**
-   * Parse a prefixed identifier given that the given [qualifier] was already
-   * parsed. Return the prefixed identifier that was parsed.
-   *
-   *     prefixedIdentifier ::=
-   *         identifier ('.' identifier)?
-   */
+  /// Parse a prefixed identifier given that the given [qualifier] was already
+  /// parsed. Return the prefixed identifier that was parsed.
+  ///
+  ///     prefixedIdentifier ::=
+  ///         identifier ('.' identifier)?
   Identifier _parsePrefixedIdentifierAfterIdentifier(
       SimpleIdentifier qualifier) {
     if (!_matches(TokenType.PERIOD)) {
@@ -7283,28 +6844,24 @@
     return astFactory.prefixedIdentifier(qualifier, period, qualified);
   }
 
-  /**
-   * Parse a prefixed identifier. Return the prefixed identifier that was
-   * parsed.
-   *
-   * This method assumes that the current token matches an identifier.
-   *
-   *     prefixedIdentifier ::=
-   *         identifier ('.' identifier)?
-   */
+  /// Parse a prefixed identifier. Return the prefixed identifier that was
+  /// parsed.
+  ///
+  /// This method assumes that the current token matches an identifier.
+  ///
+  ///     prefixedIdentifier ::=
+  ///         identifier ('.' identifier)?
   Identifier _parsePrefixedIdentifierUnchecked() {
     return _parsePrefixedIdentifierAfterIdentifier(
         _parseSimpleIdentifierUnchecked());
   }
 
-  /**
-   * Parse a simple identifier. Return the simple identifier that was parsed.
-   *
-   * This method assumes that the current token matches an identifier.
-   *
-   *     identifier ::=
-   *         IDENTIFIER
-   */
+  /// Parse a simple identifier. Return the simple identifier that was parsed.
+  ///
+  /// This method assumes that the current token matches an identifier.
+  ///
+  ///     identifier ::=
+  ///         IDENTIFIER
   SimpleIdentifier _parseSimpleIdentifierUnchecked(
       {bool isDeclaration: false}) {
     String lexeme = _currentToken.lexeme;
@@ -7317,13 +6874,11 @@
         isDeclaration: isDeclaration);
   }
 
-  /**
-   * Parse a list of statements within a switch statement. Return the statements
-   * that were parsed.
-   *
-   *     statements ::=
-   *         statement*
-   */
+  /// Parse a list of statements within a switch statement. Return the
+  /// statements that were parsed.
+  ///
+  ///     statements ::=
+  ///         statement*
   List<Statement> _parseStatementList() {
     List<Statement> statements = <Statement>[];
     Token statementStart = _currentToken;
@@ -7343,14 +6898,12 @@
     return statements;
   }
 
-  /**
-   * Parse a string literal that contains interpolations. Return the string
-   * literal that was parsed.
-   *
-   * This method assumes that the current token matches either
-   * [TokenType.STRING_INTERPOLATION_EXPRESSION] or
-   * [TokenType.STRING_INTERPOLATION_IDENTIFIER].
-   */
+  /// Parse a string literal that contains interpolations. Return the string
+  /// literal that was parsed.
+  ///
+  /// This method assumes that the current token matches either
+  /// [TokenType.STRING_INTERPOLATION_EXPRESSION] or
+  /// [TokenType.STRING_INTERPOLATION_IDENTIFIER].
   StringInterpolation _parseStringInterpolation(Token string) {
     List<InterpolationElement> elements = <InterpolationElement>[
       astFactory.interpolationString(
@@ -7396,15 +6949,13 @@
     return astFactory.stringInterpolation(elements);
   }
 
-  /**
-   * Parse a string literal. Return the string literal that was parsed.
-   *
-   * This method assumes that the current token matches `TokenType.STRING`.
-   *
-   *     stringLiteral ::=
-   *         MULTI_LINE_STRING+
-   *       | SINGLE_LINE_STRING+
-   */
+  /// Parse a string literal. Return the string literal that was parsed.
+  ///
+  /// This method assumes that the current token matches `TokenType.STRING`.
+  ///
+  ///     stringLiteral ::=
+  ///         MULTI_LINE_STRING+
+  ///       | SINGLE_LINE_STRING+
   StringLiteral _parseStringLiteralUnchecked() {
     List<StringLiteral> strings = <StringLiteral>[];
     do {
@@ -7422,15 +6973,13 @@
         : astFactory.adjacentStrings(strings);
   }
 
-  /**
-   * Parse a type annotation, possibly superseded by a type name in a comment.
-   * Return the type name that was parsed.
-   *
-   * This method assumes that the current token is an identifier.
-   *
-   *     type ::=
-   *         qualified typeArguments?
-   */
+  /// Parse a type annotation, possibly superseded by a type name in a comment.
+  /// Return the type name that was parsed.
+  ///
+  /// This method assumes that the current token is an identifier.
+  ///
+  ///     type ::=
+  ///         qualified typeArguments?
   TypeAnnotation _parseTypeAnnotationAfterIdentifier() {
     return parseTypeAnnotation(false);
   }
@@ -7450,10 +6999,8 @@
     return astFactory.typeName(typeName, typeArguments);
   }
 
-  /**
-   * Parse a string literal representing a URI. Return the string literal that
-   * was parsed.
-   */
+  /// Parse a string literal representing a URI. Return the string literal that
+  /// was parsed.
   StringLiteral _parseUri() {
     // TODO(brianwilkerson) Should this function also return true for valid
     // top-level keywords?
@@ -7510,17 +7057,15 @@
     return parseStringLiteral();
   }
 
-  /**
-   * Parse a variable declaration statement. The [commentAndMetadata] is the
-   * metadata to be associated with the variable declaration statement, or
-   * `null` if there is no attempt at parsing the comment and metadata. The
-   * [keyword] is the token representing the 'final', 'const' or 'var' keyword,
-   * or `null` if there is no keyword. The [type] is the type of the variables
-   * in the list. Return the variable declaration statement that was parsed.
-   *
-   *     variableDeclarationStatement ::=
-   *         variableDeclarationList ';'
-   */
+  /// Parse a variable declaration statement. The [commentAndMetadata] is the
+  /// metadata to be associated with the variable declaration statement, or
+  /// `null` if there is no attempt at parsing the comment and metadata. The
+  /// [keyword] is the token representing the 'final', 'const' or 'var' keyword,
+  /// or `null` if there is no keyword. The [type] is the type of the variables
+  /// in the list. Return the variable declaration statement that was parsed.
+  ///
+  ///     variableDeclarationStatement ::=
+  ///         variableDeclarationList ';'
   VariableDeclarationStatement _parseVariableDeclarationStatementAfterType(
       CommentAndMetadata commentAndMetadata,
       Token keyword,
@@ -7532,17 +7077,13 @@
     return astFactory.variableDeclarationStatement(variableList, semicolon);
   }
 
-  /**
-   * Return the token that is immediately after the current token. This is
-   * equivalent to [_peekAt](1).
-   */
+  /// Return the token that is immediately after the current token. This is
+  /// equivalent to [_peekAt](1).
   Token _peek() => _currentToken.next;
 
-  /**
-   * Return the token that is the given [distance] after the current token,
-   * where the distance is the number of tokens to look ahead. A distance of `0`
-   * is the current token, `1` is the next token, etc.
-   */
+  /// Return the token that is the given [distance] after the current token,
+  /// where the distance is the number of tokens to look ahead. A distance of
+  /// `0` is the current token, `1` is the next token, etc.
   Token _peekAt(int distance) {
     Token token = _currentToken;
     for (int i = 0; i < distance; i++) {
@@ -7570,9 +7111,7 @@
     return comment;
   }
 
-  /**
-   * Report the given [error].
-   */
+  /// Report the given [error].
   void _reportError(AnalysisError error) {
     if (_errorListenerLock != 0) {
       return;
@@ -7580,29 +7119,23 @@
     _errorListener.onError(error);
   }
 
-  /**
-   * Report an error with the given [errorCode] and [arguments] associated with
-   * the current token.
-   */
+  /// Report an error with the given [errorCode] and [arguments] associated with
+  /// the current token.
   void _reportErrorForCurrentToken(ParserErrorCode errorCode,
       [List<Object> arguments]) {
     _reportErrorForToken(errorCode, _currentToken, arguments);
   }
 
-  /**
-   * Report an error with the given [errorCode] and [arguments] associated with
-   * the given [node].
-   */
+  /// Report an error with the given [errorCode] and [arguments] associated with
+  /// the given [node].
   void _reportErrorForNode(ParserErrorCode errorCode, AstNode node,
       [List<Object> arguments]) {
     _reportError(new AnalysisError(
         _source, node.offset, node.length, errorCode, arguments));
   }
 
-  /**
-   * Report an error with the given [errorCode] and [arguments] associated with
-   * the given [token].
-   */
+  /// Report an error with the given [errorCode] and [arguments] associated with
+  /// the given [token].
   void _reportErrorForToken(ErrorCode errorCode, Token token,
       [List<Object> arguments]) {
     if (token.type == TokenType.EOF) {
@@ -7612,9 +7145,7 @@
         math.max(token.length, 1), errorCode, arguments));
   }
 
-  /**
-   * Skips a block with all containing blocks.
-   */
+  /// Skips a block with all containing blocks.
   void _skipBlock() {
     Token endToken = (_currentToken as BeginToken).endToken;
     if (endToken == null) {
@@ -7630,20 +7161,18 @@
     }
   }
 
-  /**
-   * Parse the 'final', 'const', 'var' or type preceding a variable declaration,
-   * starting at the given token, without actually creating a type or changing
-   * the current token. Return the token following the type that was parsed, or
-   * `null` if the given token is not the first token in a valid type. The
-   * [startToken] is the token at which parsing is to begin. Return the token
-   * following the type that was parsed.
-   *
-   * finalConstVarOrType ::=
-   *   | 'final' type?
-   *   | 'const' type?
-   *   | 'var'
-   *   | type
-   */
+  /// Parse the 'final', 'const', 'var' or type preceding a variable
+  /// declaration, starting at the given token, without actually creating a
+  /// type or changing the current token. Return the token following the type
+  /// that was parsed, or `null` if the given token is not the first token in a
+  /// valid type. The [startToken] is the token at which parsing is to begin.
+  /// Return the token following the type that was parsed.
+  ///
+  /// finalConstVarOrType ::=
+  ///   | 'final' type?
+  ///   | 'const' type?
+  ///   | 'var'
+  ///   | type
   Token _skipFinalConstVarOrType(Token startToken) {
     Keyword keyword = startToken.keyword;
     if (keyword == Keyword.FINAL || keyword == Keyword.CONST) {
@@ -7677,40 +7206,38 @@
     return null;
   }
 
-  /**
-   * Parse a list of formal parameters, starting at the [startToken], without
-   * actually creating a formal parameter list or changing the current token.
-   * Return the token following the formal parameter list that was parsed, or
-   * `null` if the given token is not the first token in a valid list of formal
-   * parameter.
-   *
-   * Note that unlike other skip methods, this method uses a heuristic. In the
-   * worst case, the parameters could be prefixed by metadata, which would
-   * require us to be able to skip arbitrary expressions. Rather than duplicate
-   * the logic of most of the parse methods we simply look for something that is
-   * likely to be a list of parameters and then skip to returning the token
-   * after the closing parenthesis.
-   *
-   * This method must be kept in sync with [parseFormalParameterList].
-   *
-   *     formalParameterList ::=
-   *         '(' ')'
-   *       | '(' normalFormalParameters (',' optionalFormalParameters)? ')'
-   *       | '(' optionalFormalParameters ')'
-   *
-   *     normalFormalParameters ::=
-   *         normalFormalParameter (',' normalFormalParameter)*
-   *
-   *     optionalFormalParameters ::=
-   *         optionalPositionalFormalParameters
-   *       | namedFormalParameters
-   *
-   *     optionalPositionalFormalParameters ::=
-   *         '[' defaultFormalParameter (',' defaultFormalParameter)* ']'
-   *
-   *     namedFormalParameters ::=
-   *         '{' defaultNamedParameter (',' defaultNamedParameter)* '}'
-   */
+  /// Parse a list of formal parameters, starting at the [startToken], without
+  /// actually creating a formal parameter list or changing the current token.
+  /// Return the token following the formal parameter list that was parsed, or
+  /// `null` if the given token is not the first token in a valid list of formal
+  /// parameter.
+  ///
+  /// Note that unlike other skip methods, this method uses a heuristic. In the
+  /// worst case, the parameters could be prefixed by metadata, which would
+  /// require us to be able to skip arbitrary expressions. Rather than duplicate
+  /// the logic of most of the parse methods we simply look for something that
+  /// is likely to be a list of parameters and then skip to returning the token
+  /// after the closing parenthesis.
+  ///
+  /// This method must be kept in sync with [parseFormalParameterList].
+  ///
+  ///     formalParameterList ::=
+  ///         '(' ')'
+  ///       | '(' normalFormalParameters (',' optionalFormalParameters)? ')'
+  ///       | '(' optionalFormalParameters ')'
+  ///
+  ///     normalFormalParameters ::=
+  ///         normalFormalParameter (',' normalFormalParameter)*
+  ///
+  ///     optionalFormalParameters ::=
+  ///         optionalPositionalFormalParameters
+  ///       | namedFormalParameters
+  ///
+  ///     optionalPositionalFormalParameters ::=
+  ///         '[' defaultFormalParameter (',' defaultFormalParameter)* ']'
+  ///
+  ///     namedFormalParameters ::=
+  ///         '{' defaultNamedParameter (',' defaultNamedParameter)* '}'
   Token _skipFormalParameterList(Token startToken) {
     if (!_tokenMatches(startToken, TokenType.OPEN_PAREN)) {
       return null;
@@ -7761,10 +7288,8 @@
     return _skipPastMatchingToken(startToken);
   }
 
-  /**
-   * If the [startToken] is a begin token with an associated end token, then
-   * return the token following the end token. Otherwise, return `null`.
-   */
+  /// If the [startToken] is a begin token with an associated end token, then
+  /// return the token following the end token. Otherwise, return `null`.
   Token _skipPastMatchingToken(Token startToken) {
     if (startToken is! BeginToken) {
       return null;
@@ -7776,15 +7301,13 @@
     return closeParen.next;
   }
 
-  /**
-   * Parse a string literal that contains interpolations, starting at the
-   * [startToken], without actually creating a string literal or changing the
-   * current token. Return the token following the string literal that was
-   * parsed, or `null` if the given token is not the first token in a valid
-   * string literal.
-   *
-   * This method must be kept in sync with [parseStringInterpolation].
-   */
+  /// Parse a string literal that contains interpolations, starting at the
+  /// [startToken], without actually creating a string literal or changing the
+  /// current token. Return the token following the string literal that was
+  /// parsed, or `null` if the given token is not the first token in a valid
+  /// string literal.
+  ///
+  /// This method must be kept in sync with [parseStringInterpolation].
   Token _skipStringInterpolation(Token startToken) {
     Token token = startToken;
     TokenType type = token.type;
@@ -7836,18 +7359,16 @@
     return token;
   }
 
-  /**
-   * Parse a list of type parameters, starting at the [startToken], without
-   * actually creating a type parameter list or changing the current token.
-   * Return the token following the type parameter list that was parsed, or
-   * `null` if the given token is not the first token in a valid type parameter
-   * list.
-   *
-   * This method must be kept in sync with [parseTypeParameterList].
-   *
-   *     typeParameterList ::=
-   *         '<' typeParameter (',' typeParameter)* '>'
-   */
+  /// Parse a list of type parameters, starting at the [startToken], without
+  /// actually creating a type parameter list or changing the current token.
+  /// Return the token following the type parameter list that was parsed, or
+  /// `null` if the given token is not the first token in a valid type parameter
+  /// list.
+  ///
+  /// This method must be kept in sync with [parseTypeParameterList].
+  ///
+  ///     typeParameterList ::=
+  ///         '<' typeParameter (',' typeParameter)* '>'
   Token _skipTypeParameterList(Token startToken) {
     if (!_tokenMatches(startToken, TokenType.LT)) {
       return null;
@@ -7889,10 +7410,8 @@
     return next;
   }
 
-  /**
-   * Assuming that the current token is an index token ('[]'), split it into two
-   * tokens ('[' and ']'), leaving the left bracket as the current token.
-   */
+  /// Assuming that the current token is an index token ('[]'), split it into
+  /// two tokens ('[' and ']'), leaving the left bracket as the current token.
   void _splitIndex() {
     // Split the token into two separate tokens.
     BeginToken leftBracket = _createToken(
@@ -7907,42 +7426,30 @@
     _currentToken = leftBracket;
   }
 
-  /**
-   * Return `true` if the given [token] has the given [type].
-   */
+  /// Return `true` if the given [token] has the given [type].
   bool _tokenMatches(Token token, TokenType type) => token.type == type;
 
-  /**
-   * Return `true` if the given [token] is a valid identifier. Valid identifiers
-   * include built-in identifiers (pseudo-keywords).
-   */
+  /// Return `true` if the given [token] is a valid identifier. Valid
+  /// identifiers include built-in identifiers (pseudo-keywords).
   bool _tokenMatchesIdentifier(Token token) =>
       _tokenMatches(token, TokenType.IDENTIFIER) ||
       _tokenMatchesPseudoKeyword(token);
 
-  /**
-   * Return `true` if the given [token] is either an identifier or a keyword.
-   */
+  /// Return `true` if the given [token] is either an identifier or a keyword.
   bool _tokenMatchesIdentifierOrKeyword(Token token) =>
       _tokenMatches(token, TokenType.IDENTIFIER) || token.type.isKeyword;
 
-  /**
-   * Return `true` if the given [token] matches the given [keyword].
-   */
+  /// Return `true` if the given [token] matches the given [keyword].
   bool _tokenMatchesKeyword(Token token, Keyword keyword) =>
       token.keyword == keyword;
 
-  /**
-   * Return `true` if the given [token] matches a pseudo keyword.
-   */
+  /// Return `true` if the given [token] matches a pseudo keyword.
   bool _tokenMatchesPseudoKeyword(Token token) =>
       token.keyword?.isBuiltInOrPseudo ?? false;
 
-  /**
-   * Translate the characters at the given [index] in the given [lexeme],
-   * appending the translated character to the given [buffer]. The index is
-   * assumed to be valid.
-   */
+  /// Translate the characters at the given [index] in the given [lexeme],
+  /// appending the translated character to the given [buffer]. The index is
+  /// assumed to be valid.
   int _translateCharacter(StringBuffer buffer, String lexeme, int index) {
     int currentChar = lexeme.codeUnitAt(index);
     if (currentChar != 0x5C) {
@@ -8081,10 +7588,8 @@
     return currentIndex + 1;
   }
 
-  /**
-   * Decrements the error reporting lock level. If level is more than `0`, then
-   * [reportError] wont report any error.
-   */
+  /// Decrements the error reporting lock level. If level is more than `0`, then
+  /// [reportError] wont report any error.
   void _unlockErrorListener() {
     if (_errorListenerLock == 0) {
       throw new StateError("Attempt to unlock not locked error listener.");
@@ -8092,10 +7597,8 @@
     _errorListenerLock--;
   }
 
-  /**
-   * Validate that the given [parameterList] does not contain any field
-   * initializers.
-   */
+  /// Validate that the given [parameterList] does not contain any field
+  /// initializers.
   void _validateFormalParameterList(FormalParameterList parameterList) {
     for (FormalParameter parameter in parameterList.parameters) {
       if (parameter is FieldFormalParameter) {
@@ -8106,10 +7609,8 @@
     }
   }
 
-  /**
-   * Validate that the given set of [modifiers] is appropriate for a class and
-   * return the 'abstract' keyword if there is one.
-   */
+  /// Validate that the given set of [modifiers] is appropriate for a class and
+  /// return the 'abstract' keyword if there is one.
   Token _validateModifiersForClass(Modifiers modifiers) {
     _validateModifiersForTopLevelDeclaration(modifiers);
     if (modifiers.constKeyword != null) {
@@ -8128,10 +7629,8 @@
     return modifiers.abstractKeyword;
   }
 
-  /**
-   * Validate that the given set of [modifiers] is appropriate for a constructor
-   * and return the 'const' keyword if there is one.
-   */
+  /// Validate that the given set of [modifiers] is appropriate for a
+  /// constructor and return the 'const' keyword if there is one.
   Token _validateModifiersForConstructor(Modifiers modifiers) {
     if (modifiers.abstractKeyword != null) {
       _reportErrorForToken(
@@ -8171,10 +7670,8 @@
     return constKeyword;
   }
 
-  /**
-   * Validate that the given set of [modifiers] is appropriate for an enum and
-   * return the 'abstract' keyword if there is one.
-   */
+  /// Validate that the given set of [modifiers] is appropriate for an enum and
+  /// return the 'abstract' keyword if there is one.
   void _validateModifiersForEnum(Modifiers modifiers) {
     _validateModifiersForTopLevelDeclaration(modifiers);
     if (modifiers.abstractKeyword != null) {
@@ -8196,10 +7693,8 @@
     }
   }
 
-  /**
-   * Validate that the given set of [modifiers] is appropriate for a field and
-   * return the 'final', 'const' or 'var' keyword if there is one.
-   */
+  /// Validate that the given set of [modifiers] is appropriate for a field and
+  /// return the 'final', 'const' or 'var' keyword if there is one.
   Token _validateModifiersForField(Modifiers modifiers) {
     if (modifiers.abstractKeyword != null) {
       _reportErrorForCurrentToken(ParserErrorCode.ABSTRACT_CLASS_MEMBER);
@@ -8258,10 +7753,8 @@
     return Token.lexicallyFirst([constKeyword, finalKeyword, varKeyword]);
   }
 
-  /**
-   * Validate that the given set of [modifiers] is appropriate for a local
-   * function.
-   */
+  /// Validate that the given set of [modifiers] is appropriate for a local
+  /// function.
   void _validateModifiersForFunctionDeclarationStatement(Modifiers modifiers) {
     if (modifiers.abstractKeyword != null ||
         modifiers.constKeyword != null ||
@@ -8275,10 +7768,8 @@
     }
   }
 
-  /**
-   * Validate that the given set of [modifiers] is appropriate for a getter,
-   * setter, or method.
-   */
+  /// Validate that the given set of [modifiers] is appropriate for a getter,
+  /// setter, or method.
   void _validateModifiersForGetterOrSetterOrMethod(Modifiers modifiers) {
     if (modifiers.abstractKeyword != null) {
       _reportErrorForCurrentToken(ParserErrorCode.ABSTRACT_CLASS_MEMBER);
@@ -8313,10 +7804,8 @@
     }
   }
 
-  /**
-   * Validate that the given set of [modifiers] is appropriate for a getter,
-   * setter, or method.
-   */
+  /// Validate that the given set of [modifiers] is appropriate for a getter,
+  /// setter, or method.
   void _validateModifiersForOperator(Modifiers modifiers) {
     if (modifiers.abstractKeyword != null) {
       _reportErrorForCurrentToken(ParserErrorCode.ABSTRACT_CLASS_MEMBER);
@@ -8343,10 +7832,8 @@
     }
   }
 
-  /**
-   * Validate that the given set of [modifiers] is appropriate for a top-level
-   * declaration.
-   */
+  /// Validate that the given set of [modifiers] is appropriate for a top-level
+  /// declaration.
   void _validateModifiersForTopLevelDeclaration(Modifiers modifiers) {
     if (modifiers.covariantKeyword != null) {
       _reportErrorForToken(ParserErrorCode.COVARIANT_TOP_LEVEL_DECLARATION,
@@ -8362,10 +7849,8 @@
     }
   }
 
-  /**
-   * Validate that the given set of [modifiers] is appropriate for a top-level
-   * function.
-   */
+  /// Validate that the given set of [modifiers] is appropriate for a top-level
+  /// function.
   void _validateModifiersForTopLevelFunction(Modifiers modifiers) {
     _validateModifiersForTopLevelDeclaration(modifiers);
     if (modifiers.abstractKeyword != null) {
@@ -8383,10 +7868,8 @@
     }
   }
 
-  /**
-   * Validate that the given set of [modifiers] is appropriate for a field and
-   * return the 'final', 'const' or 'var' keyword if there is one.
-   */
+  /// Validate that the given set of [modifiers] is appropriate for a field and
+  /// return the 'final', 'const' or 'var' keyword if there is one.
   Token _validateModifiersForTopLevelVariable(Modifiers modifiers) {
     _validateModifiersForTopLevelDeclaration(modifiers);
     if (modifiers.abstractKeyword != null) {
@@ -8414,10 +7897,8 @@
     return Token.lexicallyFirst([constKeyword, finalKeyword, varKeyword]);
   }
 
-  /**
-   * Validate that the given set of [modifiers] is appropriate for a class and
-   * return the 'abstract' keyword if there is one.
-   */
+  /// Validate that the given set of [modifiers] is appropriate for a class and
+  /// return the 'abstract' keyword if there is one.
   void _validateModifiersForTypedef(Modifiers modifiers) {
     _validateModifiersForTopLevelDeclaration(modifiers);
     if (modifiers.abstractKeyword != null) {
@@ -8442,9 +7923,7 @@
   }
 }
 
-/**
- * Instances of this class are thrown when the parser detects that AST has
- * too many nested expressions to be parsed safely and avoid possibility of
- * [StackOverflowError] in the parser or during later analysis.
- */
+/// Instances of this class are thrown when the parser detects that AST has
+/// too many nested expressions to be parsed safely and avoid possibility of
+/// [StackOverflowError] in the parser or during later analysis.
 class _TooDeepTreeError {}
diff --git a/pkg/analyzer/lib/src/generated/parser_fasta.dart b/pkg/analyzer/lib/src/generated/parser_fasta.dart
index 946f327..dfb3261 100644
--- a/pkg/analyzer/lib/src/generated/parser_fasta.dart
+++ b/pkg/analyzer/lib/src/generated/parser_fasta.dart
@@ -44,6 +44,11 @@
   void set enableOptionalNewAndConst(bool enable) {}
 
   @override
+  void set enableSetLiterals(bool value) {
+    fastaParser.parseSetLiterals = value;
+  }
+
+  @override
   void set parseFunctionBodies(bool parseFunctionBodies) {
     astBuilder.parseFunctionBodies = parseFunctionBodies;
   }
diff --git a/pkg/analyzer/lib/src/generated/resolver.dart b/pkg/analyzer/lib/src/generated/resolver.dart
index 7fd6ce9..70d2b41 100644
--- a/pkg/analyzer/lib/src/generated/resolver.dart
+++ b/pkg/analyzer/lib/src/generated/resolver.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -58,14 +58,14 @@
             nameScope: nameScope);
 
   @override
-  Object visitMethodInvocation(MethodInvocation node) {
+  void visitMethodInvocation(MethodInvocation node) {
     super.visitMethodInvocation(node);
 
     SimpleIdentifier methodName = node.methodName;
     if (methodName.isSynthetic) {
       // This isn't a constructor invocation because the method name is
       // synthetic.
-      return null;
+      return;
     }
 
     Expression target = node.target;
@@ -73,7 +73,7 @@
       // Possible cases: C() or C<>()
       if (node.realTarget != null) {
         // This isn't a constructor invocation because it's in a cascade.
-        return null;
+        return;
       }
       Element element = nameScope.lookup(methodName, definingLibrary);
       if (element is ClassElement) {
@@ -204,7 +204,6 @@
         }
       }
     }
-    return null;
   }
 
   /// Return the token that should be used in the [InstanceCreationExpression]
@@ -220,27 +219,35 @@
   static InterfaceType getType(TypeSystem typeSystem, ClassElement element,
       TypeArgumentList typeArguments) {
     DartType type = element.type;
+
     List<TypeParameterElement> typeParameters = element.typeParameters;
-    if (typeArguments != null &&
-        typeParameters != null &&
-        typeArguments.arguments.length == typeParameters.length) {
-      List<DartType> argumentTypes = typeArguments.arguments
+    if (typeParameters.isEmpty) {
+      return type;
+    }
+
+    if (typeArguments == null) {
+      return typeSystem.instantiateToBounds(type);
+    }
+
+    List<DartType> argumentTypes;
+    if (typeArguments.arguments.length == typeParameters.length) {
+      argumentTypes = typeArguments.arguments
           .map((TypeAnnotation argument) => argument.type)
           .toList();
-      List<DartType> parameterTypes = typeParameters
-          .map((TypeParameterElement parameter) => parameter.type)
-          .toList();
-      type = type.substitute2(argumentTypes, parameterTypes);
-    } else if (typeArguments == null && typeParameters != null) {
-      type = typeSystem.instantiateToBounds(type);
+    } else {
+      argumentTypes = List<DartType>.filled(
+          typeParameters.length, DynamicTypeImpl.instance);
     }
-    return type;
+    List<DartType> parameterTypes = typeParameters
+        .map((TypeParameterElement parameter) => parameter.type)
+        .toList();
+    return type.substitute2(argumentTypes, parameterTypes);
   }
 }
 
 /// Instances of the class `BestPracticesVerifier` traverse an AST structure
 /// looking for violations of Dart best practices.
-class BestPracticesVerifier extends RecursiveAstVisitor<Object> {
+class BestPracticesVerifier extends RecursiveAstVisitor<void> {
 //  static String _HASHCODE_GETTER_NAME = "hashCode";
 
   static String _NULL_TYPE_NAME = "Null";
@@ -288,7 +295,7 @@
   }
 
   @override
-  Object visitAnnotation(Annotation node) {
+  void visitAnnotation(Annotation node) {
     ElementAnnotation element =
         resolutionMap.elementAnnotationForAnnotation(node);
     if (element?.isFactory == true) {
@@ -306,46 +313,46 @@
             HintCode.INVALID_IMMUTABLE_ANNOTATION, node, []);
       }
     }
-    return super.visitAnnotation(node);
+    super.visitAnnotation(node);
   }
 
   @override
-  Object visitArgumentList(ArgumentList node) {
+  void visitArgumentList(ArgumentList node) {
     for (Expression argument in node.arguments) {
       ParameterElement parameter = argument.staticParameterElement;
       if (parameter?.isOptionalPositional == true) {
         _checkForDeprecatedMemberUse(parameter, argument);
       }
     }
-    return super.visitArgumentList(node);
+    super.visitArgumentList(node);
   }
 
   @override
-  Object visitAsExpression(AsExpression node) {
+  void visitAsExpression(AsExpression node) {
     _checkForUnnecessaryCast(node);
-    return super.visitAsExpression(node);
+    super.visitAsExpression(node);
   }
 
   @override
-  Object visitAssignmentExpression(AssignmentExpression node) {
+  void visitAssignmentExpression(AssignmentExpression node) {
     TokenType operatorType = node.operator.type;
     if (operatorType == TokenType.EQ) {
       _checkForInvalidAssignment(node.leftHandSide, node.rightHandSide);
     } else {
       _checkForDeprecatedMemberUse(node.staticElement, node);
     }
-    return super.visitAssignmentExpression(node);
+    super.visitAssignmentExpression(node);
   }
 
   @override
-  Object visitBinaryExpression(BinaryExpression node) {
+  void visitBinaryExpression(BinaryExpression node) {
     _checkForDivisionOptimizationHint(node);
     _checkForDeprecatedMemberUse(node.staticElement, node);
-    return super.visitBinaryExpression(node);
+    super.visitBinaryExpression(node);
   }
 
   @override
-  Object visitClassDeclaration(ClassDeclaration node) {
+  void visitClassDeclaration(ClassDeclaration node) {
     var element = AbstractClassElementImpl.getImpl(node.declaredElement);
     _enclosingClass = element;
     _invalidAccessVerifier._enclosingClass = element;
@@ -359,7 +366,7 @@
       // Commented out until we decide that we want this hint in the analyzer
       //    checkForOverrideEqualsButNotHashCode(node);
       _checkForImmutable(node);
-      return super.visitClassDeclaration(node);
+      super.visitClassDeclaration(node);
     } finally {
       _enclosingClass = null;
       _invalidAccessVerifier._enclosingClass = null;
@@ -368,7 +375,7 @@
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     if (resolutionMap.elementDeclaredByConstructorDeclaration(node).isFactory) {
       if (node.body is BlockFunctionBody) {
         // Check the block for a return statement, if not, create the hint.
@@ -378,37 +385,37 @@
         }
       }
     }
-    return super.visitConstructorDeclaration(node);
+    super.visitConstructorDeclaration(node);
   }
 
   @override
-  Object visitExportDirective(ExportDirective node) {
+  void visitExportDirective(ExportDirective node) {
     _checkForDeprecatedMemberUse(node.uriElement, node);
-    return super.visitExportDirective(node);
+    super.visitExportDirective(node);
   }
 
   @override
-  Object visitFieldDeclaration(FieldDeclaration node) {
+  void visitFieldDeclaration(FieldDeclaration node) {
     bool wasInDeprecatedMember = _inDeprecatedMember;
     if (_hasDeprecatedAnnotation(node.metadata)) {
       _inDeprecatedMember = true;
     }
 
     try {
-      return super.visitFieldDeclaration(node);
+      super.visitFieldDeclaration(node);
     } finally {
       _inDeprecatedMember = wasInDeprecatedMember;
     }
   }
 
   @override
-  Object visitFormalParameterList(FormalParameterList node) {
+  void visitFormalParameterList(FormalParameterList node) {
     _checkRequiredParameter(node);
-    return super.visitFormalParameterList(node);
+    super.visitFormalParameterList(node);
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     bool wasInDeprecatedMember = _inDeprecatedMember;
     ExecutableElement element = node.declaredElement;
     if (element != null && element.hasDeprecated) {
@@ -417,42 +424,42 @@
     try {
       _checkForMissingReturn(
           node.returnType, node.functionExpression.body, element, node);
-      return super.visitFunctionDeclaration(node);
+      super.visitFunctionDeclaration(node);
     } finally {
       _inDeprecatedMember = wasInDeprecatedMember;
     }
   }
 
   @override
-  Object visitImportDirective(ImportDirective node) {
+  void visitImportDirective(ImportDirective node) {
     _checkForDeprecatedMemberUse(node.uriElement, node);
     ImportElement importElement = node.element;
     if (importElement != null && importElement.isDeferred) {
       _checkForLoadLibraryFunction(node, importElement);
     }
-    return super.visitImportDirective(node);
+    super.visitImportDirective(node);
   }
 
   @override
-  Object visitIndexExpression(IndexExpression node) {
+  void visitIndexExpression(IndexExpression node) {
     _checkForDeprecatedMemberUse(node.staticElement, node);
-    return super.visitIndexExpression(node);
+    super.visitIndexExpression(node);
   }
 
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     _checkForDeprecatedMemberUse(node.staticElement, node);
-    return super.visitInstanceCreationExpression(node);
+    super.visitInstanceCreationExpression(node);
   }
 
   @override
-  Object visitIsExpression(IsExpression node) {
+  void visitIsExpression(IsExpression node) {
     _checkAllTypeChecks(node);
-    return super.visitIsExpression(node);
+    super.visitIsExpression(node);
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     bool wasInDeprecatedMember = _inDeprecatedMember;
     ExecutableElement element = node.declaredElement;
     if (element != null && element.hasDeprecated) {
@@ -463,14 +470,14 @@
       //checkForOverridingPrivateMember(node);
       _checkForMissingReturn(node.returnType, node.body, element, node);
       _checkForUnnecessaryNoSuchMethod(node);
-      return super.visitMethodDeclaration(node);
+      super.visitMethodDeclaration(node);
     } finally {
       _inDeprecatedMember = wasInDeprecatedMember;
     }
   }
 
   @override
-  Object visitMethodInvocation(MethodInvocation node) {
+  void visitMethodInvocation(MethodInvocation node) {
     _checkForNullAwareHints(node, node.operator);
     DartType staticInvokeType = node.staticInvokeType;
     Element callElement = staticInvokeType?.element;
@@ -478,11 +485,11 @@
         callElement.name == FunctionElement.CALL_METHOD_NAME) {
       _checkForDeprecatedMemberUse(callElement, node);
     }
-    return super.visitMethodInvocation(node);
+    super.visitMethodInvocation(node);
   }
 
   @override
-  Object visitMixinDeclaration(MixinDeclaration node) {
+  void visitMixinDeclaration(MixinDeclaration node) {
     _enclosingClass = node.declaredElement;
     _invalidAccessVerifier._enclosingClass = _enclosingClass;
 
@@ -492,7 +499,7 @@
     }
 
     try {
-      return super.visitMixinDeclaration(node);
+      super.visitMixinDeclaration(node);
     } finally {
       _enclosingClass = null;
       _invalidAccessVerifier._enclosingClass = null;
@@ -501,61 +508,61 @@
   }
 
   @override
-  Object visitPostfixExpression(PostfixExpression node) {
+  void visitPostfixExpression(PostfixExpression node) {
     _checkForDeprecatedMemberUse(node.staticElement, node);
-    return super.visitPostfixExpression(node);
+    super.visitPostfixExpression(node);
   }
 
   @override
-  Object visitPrefixExpression(PrefixExpression node) {
+  void visitPrefixExpression(PrefixExpression node) {
     _checkForDeprecatedMemberUse(node.staticElement, node);
-    return super.visitPrefixExpression(node);
+    super.visitPrefixExpression(node);
   }
 
   @override
-  Object visitPropertyAccess(PropertyAccess node) {
+  void visitPropertyAccess(PropertyAccess node) {
     _checkForNullAwareHints(node, node.operator);
-    return super.visitPropertyAccess(node);
+    super.visitPropertyAccess(node);
   }
 
   @override
-  Object visitRedirectingConstructorInvocation(
+  void visitRedirectingConstructorInvocation(
       RedirectingConstructorInvocation node) {
     _checkForDeprecatedMemberUse(node.staticElement, node);
-    return super.visitRedirectingConstructorInvocation(node);
+    super.visitRedirectingConstructorInvocation(node);
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     _checkForDeprecatedMemberUseAtIdentifier(node);
     _invalidAccessVerifier.verify(node);
-    return super.visitSimpleIdentifier(node);
+    super.visitSimpleIdentifier(node);
   }
 
   @override
-  Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
+  void visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     _checkForDeprecatedMemberUse(node.staticElement, node);
-    return super.visitSuperConstructorInvocation(node);
+    super.visitSuperConstructorInvocation(node);
   }
 
   @override
-  Object visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
+  void visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
     bool wasInDeprecatedMember = _inDeprecatedMember;
     if (_hasDeprecatedAnnotation(node.metadata)) {
       _inDeprecatedMember = true;
     }
 
     try {
-      return super.visitTopLevelVariableDeclaration(node);
+      super.visitTopLevelVariableDeclaration(node);
     } finally {
       _inDeprecatedMember = wasInDeprecatedMember;
     }
   }
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     _checkForInvalidAssignment(node.name, node.initializer);
-    return super.visitVariableDeclaration(node);
+    super.visitVariableDeclaration(node);
   }
 
   /// Check for the passed is expression for the unnecessary type check hint
@@ -641,8 +648,7 @@
     bool isLocalParameter(Element element, AstNode node) {
       if (element is ParameterElement) {
         ExecutableElement definingFunction = element.enclosingElement;
-        FunctionBody body =
-            node.getAncestor((ancestor) => ancestor is FunctionBody);
+        FunctionBody body = node.thisOrAncestorOfType<FunctionBody>();
         while (body != null) {
           ExecutableElement enclosingFunction;
           AstNode parent = body.parent;
@@ -656,7 +662,7 @@
           if (enclosingFunction == definingFunction) {
             return true;
           }
-          body = parent?.getAncestor((ancestor) => ancestor is FunctionBody);
+          body = parent?.thisOrAncestorOfType<FunctionBody>();
         }
       }
       return false;
@@ -849,16 +855,14 @@
         ? ErrorVerifier.getStaticType(lhs)
         : leftVariableElement.type;
     DartType staticRightType = ErrorVerifier.getStaticType(rhs);
-    if (!_typeSystem.isAssignableTo(staticRightType, leftType,
-        isDeclarationCast: true)) {
+    if (!_typeSystem.isAssignableTo(staticRightType, leftType)) {
       // The warning was generated on this rhs
       return false;
     }
     // Test for, and then generate the hint
     DartType bestRightType = rhs.staticType;
     if (leftType != null && bestRightType != null) {
-      if (!_typeSystem.isAssignableTo(bestRightType, leftType,
-          isDeclarationCast: true)) {
+      if (!_typeSystem.isAssignableTo(bestRightType, leftType)) {
         _errorReporter.reportTypeErrorForNode(
             HintCode.INVALID_ASSIGNMENT, rhs, [bestRightType, leftType]);
         return true;
@@ -1316,7 +1320,7 @@
 /// Instances of the class `Dart2JSVerifier` traverse an AST structure looking
 /// for hints for code that will be compiled to JS, such as
 /// [HintCode.IS_DOUBLE].
-class Dart2JSVerifier extends RecursiveAstVisitor<Object> {
+class Dart2JSVerifier extends RecursiveAstVisitor<void> {
   /// The name of the `double` type.
   static String _DOUBLE_TYPE_NAME = "double";
 
@@ -1329,9 +1333,9 @@
   Dart2JSVerifier(this._errorReporter);
 
   @override
-  Object visitIsExpression(IsExpression node) {
+  void visitIsExpression(IsExpression node) {
     _checkForIsDoubleHints(node);
-    return super.visitIsExpression(node);
+    super.visitIsExpression(node);
   }
 
   /// Check for instances of `x is double`, `x is int`, `x is! double` and
@@ -1374,7 +1378,7 @@
 }
 
 /// A visitor that finds dead code and unused labels.
-class DeadCodeVerifier extends RecursiveAstVisitor<Object> {
+class DeadCodeVerifier extends RecursiveAstVisitor<void> {
   /// The error reporter by which errors will be reported.
   final ErrorReporter _errorReporter;
 
@@ -1391,7 +1395,7 @@
       : this._typeSystem = typeSystem ?? new StrongTypeSystemImpl(null);
 
   @override
-  Object visitBinaryExpression(BinaryExpression node) {
+  void visitBinaryExpression(BinaryExpression node) {
     Token operator = node.operator;
     bool isAmpAmp = operator.type == TokenType.AMPERSAND_AMPERSAND;
     bool isBarBar = operator.type == TokenType.BAR_BAR;
@@ -1407,14 +1411,14 @@
                 HintCode.DEAD_CODE, node.rightOperand);
             // Only visit the LHS:
             lhsCondition?.accept(this);
-            return null;
+            return;
           } else if (value == false && isAmpAmp) {
             // Report error on "if" block: false && !e!
             _errorReporter.reportErrorForNode(
                 HintCode.DEAD_CODE, node.rightOperand);
             // Only visit the LHS:
             lhsCondition?.accept(this);
-            return null;
+            return;
           }
         }
       }
@@ -1438,27 +1442,25 @@
 //              }
 //            }
     }
-    return super.visitBinaryExpression(node);
+    super.visitBinaryExpression(node);
   }
 
   /// For each block, this method reports and error on all statements between
   /// the end of the block and the first return statement (assuming there it is
   /// not at the end of the block.)
   @override
-  Object visitBlock(Block node) {
+  void visitBlock(Block node) {
     NodeList<Statement> statements = node.statements;
     _checkForDeadStatementsInNodeList(statements);
-    return null;
   }
 
   @override
-  Object visitBreakStatement(BreakStatement node) {
+  void visitBreakStatement(BreakStatement node) {
     labelTracker?.recordUsage(node.label?.name);
-    return null;
   }
 
   @override
-  Object visitConditionalExpression(ConditionalExpression node) {
+  void visitConditionalExpression(ConditionalExpression node) {
     Expression conditionExpression = node.condition;
     conditionExpression?.accept(this);
     if (!_isDebugConstant(conditionExpression)) {
@@ -1470,27 +1472,26 @@
           _errorReporter.reportErrorForNode(
               HintCode.DEAD_CODE, node.elseExpression);
           node.thenExpression?.accept(this);
-          return null;
+          return;
         } else {
           // Report error on "if" block: false ? !1! : 2
           _errorReporter.reportErrorForNode(
               HintCode.DEAD_CODE, node.thenExpression);
           node.elseExpression?.accept(this);
-          return null;
+          return;
         }
       }
     }
-    return super.visitConditionalExpression(node);
+    super.visitConditionalExpression(node);
   }
 
   @override
-  Object visitContinueStatement(ContinueStatement node) {
+  void visitContinueStatement(ContinueStatement node) {
     labelTracker?.recordUsage(node.label?.name);
-    return null;
   }
 
   @override
-  Object visitExportDirective(ExportDirective node) {
+  void visitExportDirective(ExportDirective node) {
     ExportElement exportElement = node.element;
     if (exportElement != null) {
       // The element is null when the URI is invalid.
@@ -1501,11 +1502,11 @@
         }
       }
     }
-    return super.visitExportDirective(node);
+    super.visitExportDirective(node);
   }
 
   @override
-  Object visitIfStatement(IfStatement node) {
+  void visitIfStatement(IfStatement node) {
     Expression conditionExpression = node.condition;
     conditionExpression?.accept(this);
     if (!_isDebugConstant(conditionExpression)) {
@@ -1519,22 +1520,22 @@
             _errorReporter.reportErrorForNode(
                 HintCode.DEAD_CODE, elseStatement);
             node.thenStatement?.accept(this);
-            return null;
+            return;
           }
         } else {
           // Report error on if block: if (false) {!} else {}
           _errorReporter.reportErrorForNode(
               HintCode.DEAD_CODE, node.thenStatement);
           node.elseStatement?.accept(this);
-          return null;
+          return;
         }
       }
     }
-    return super.visitIfStatement(node);
+    super.visitIfStatement(node);
   }
 
   @override
-  Object visitImportDirective(ImportDirective node) {
+  void visitImportDirective(ImportDirective node) {
     ImportElement importElement = node.element;
     if (importElement != null) {
       // The element is null when the URI is invalid, but not when the URI is
@@ -1546,34 +1547,33 @@
         }
       }
     }
-    return super.visitImportDirective(node);
+    super.visitImportDirective(node);
   }
 
   @override
-  Object visitLabeledStatement(LabeledStatement node) {
+  void visitLabeledStatement(LabeledStatement node) {
     _pushLabels(node.labels);
     try {
       super.visitLabeledStatement(node);
     } finally {
       _popLabels();
     }
-    return null;
   }
 
   @override
-  Object visitSwitchCase(SwitchCase node) {
+  void visitSwitchCase(SwitchCase node) {
     _checkForDeadStatementsInNodeList(node.statements, allowMandated: true);
-    return super.visitSwitchCase(node);
+    super.visitSwitchCase(node);
   }
 
   @override
-  Object visitSwitchDefault(SwitchDefault node) {
+  void visitSwitchDefault(SwitchDefault node) {
     _checkForDeadStatementsInNodeList(node.statements, allowMandated: true);
-    return super.visitSwitchDefault(node);
+    super.visitSwitchDefault(node);
   }
 
   @override
-  Object visitSwitchStatement(SwitchStatement node) {
+  void visitSwitchStatement(SwitchStatement node) {
     List<Label> labels = <Label>[];
     for (SwitchMember member in node.members) {
       labels.addAll(member.labels);
@@ -1584,11 +1584,10 @@
     } finally {
       _popLabels();
     }
-    return null;
   }
 
   @override
-  Object visitTryStatement(TryStatement node) {
+  void visitTryStatement(TryStatement node) {
     node.body?.accept(this);
     node.finallyBlock?.accept(this);
     NodeList<CatchClause> catchClauses = node.catchClauses;
@@ -1615,7 +1614,7 @@
               int length = lastCatchClause.end - offset;
               _errorReporter.reportErrorForOffset(
                   HintCode.DEAD_CODE_CATCH_FOLLOWING_CATCH, offset, length);
-              return null;
+              return;
             }
           }
           int length = visitedTypes.length;
@@ -1630,7 +1629,7 @@
                   offset,
                   length,
                   [currentType.displayName, type.displayName]);
-              return null;
+              return;
             }
           }
           visitedTypes.add(currentType);
@@ -1649,15 +1648,14 @@
           int length = lastCatchClause.end - offset;
           _errorReporter.reportErrorForOffset(
               HintCode.DEAD_CODE_CATCH_FOLLOWING_CATCH, offset, length);
-          return null;
+          return;
         }
       }
     }
-    return null;
   }
 
   @override
-  Object visitWhileStatement(WhileStatement node) {
+  void visitWhileStatement(WhileStatement node) {
     Expression conditionExpression = node.condition;
     conditionExpression?.accept(this);
     if (!_isDebugConstant(conditionExpression)) {
@@ -1667,12 +1665,11 @@
         if (result.value.toBoolValue() == false) {
           // Report error on while block: while (false) {!}
           _errorReporter.reportErrorForNode(HintCode.DEAD_CODE, node.body);
-          return null;
+          return;
         }
       }
     }
     node.body?.accept(this);
-    return null;
   }
 
   /// Resolve the names in the given [combinator] in the scope of the given
@@ -2273,7 +2270,7 @@
 
 /// Instances of the class `EnumMemberBuilder` build the members in enum
 /// declarations.
-class EnumMemberBuilder extends RecursiveAstVisitor<Object> {
+class EnumMemberBuilder extends RecursiveAstVisitor<void> {
   /// The type provider used to access the types needed to build an element
   /// model for enum declarations.
   final TypeProvider _typeProvider;
@@ -2285,7 +2282,7 @@
   EnumMemberBuilder(this._typeProvider);
 
   @override
-  Object visitEnumDeclaration(EnumDeclaration node) {
+  void visitEnumDeclaration(EnumDeclaration node) {
     //
     // Finish building the enum.
     //
@@ -2351,7 +2348,7 @@
     enumElement.accessors = getters;
     // Client code isn't allowed to invoke the constructor, so we do not model
     // it.
-    return super.visitEnumDeclaration(node);
+    super.visitEnumDeclaration(node);
   }
 
   /// Create a getter that corresponds to the given [field].
@@ -3907,38 +3904,38 @@
             nameScope: nameScope);
 
   @override
-  Object visitBlockFunctionBody(BlockFunctionBody node) {
+  void visitBlockFunctionBody(BlockFunctionBody node) {
     if (_shouldBeSkipped(node)) {
       return null;
     }
-    return super.visitBlockFunctionBody(node);
+    super.visitBlockFunctionBody(node);
   }
 
   @override
-  Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
+  void visitExpressionFunctionBody(ExpressionFunctionBody node) {
     if (_shouldBeSkipped(node)) {
       return null;
     }
-    return super.visitExpressionFunctionBody(node);
+    super.visitExpressionFunctionBody(node);
   }
 
   @override
-  Object visitFieldDeclaration(FieldDeclaration node) {
+  void visitFieldDeclaration(FieldDeclaration node) {
     if (node.isStatic) {
       _addStaticVariables(node.fields.variables);
     }
-    return super.visitFieldDeclaration(node);
+    super.visitFieldDeclaration(node);
   }
 
   @override
-  Object visitNode(AstNode node) {
-    return super.visitNode(node);
+  void visitNode(AstNode node) {
+    super.visitNode(node);
   }
 
   @override
-  Object visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
+  void visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
     _addStaticVariables(node.variables.variables);
-    return super.visitTopLevelVariableDeclaration(node);
+    super.visitTopLevelVariableDeclaration(node);
   }
 
   /// Add all of the [variables] with initializers to the list of variables
@@ -4341,12 +4338,12 @@
   }
 
   @override
-  Object visitAnnotation(Annotation node) {
+  void visitAnnotation(Annotation node) {
     AstNode parent = node.parent;
     if (identical(parent, _enclosingClassDeclaration) ||
         identical(parent, _enclosingFunctionTypeAlias) ||
         identical(parent, _enclosingMixinDeclaration)) {
-      return null;
+      return;
     }
     node.name?.accept(this);
     node.constructorName?.accept(this);
@@ -4364,11 +4361,10 @@
     } else {
       elementAnnotationImpl.annotationAst = _createCloner().cloneNode(node);
     }
-    return null;
   }
 
   @override
-  Object visitArgumentList(ArgumentList node) {
+  void visitArgumentList(ArgumentList node) {
     DartType callerType = InferenceContext.getContext(node);
     if (callerType is FunctionType) {
       Map<String, DartType> namedParameterTypes =
@@ -4408,26 +4404,24 @@
         }
       }
     }
-    return super.visitArgumentList(node);
+    super.visitArgumentList(node);
   }
 
   @override
-  Object visitAssertInitializer(AssertInitializer node) {
+  void visitAssertInitializer(AssertInitializer node) {
     InferenceContext.setType(node.condition, typeProvider.boolType);
     super.visitAssertInitializer(node);
-    return null;
   }
 
   @override
-  Object visitAssertStatement(AssertStatement node) {
+  void visitAssertStatement(AssertStatement node) {
     InferenceContext.setType(node.condition, typeProvider.boolType);
     super.visitAssertStatement(node);
     _propagateTrueState(node.condition);
-    return null;
   }
 
   @override
-  Object visitAssignmentExpression(AssignmentExpression node) {
+  void visitAssignmentExpression(AssignmentExpression node) {
     node.leftHandSide?.accept(this);
     TokenType operator = node.operator.type;
     if (operator == TokenType.EQ ||
@@ -4438,21 +4432,20 @@
     node.rightHandSide?.accept(this);
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitAwaitExpression(AwaitExpression node) {
+  void visitAwaitExpression(AwaitExpression node) {
     DartType contextType = InferenceContext.getContext(node);
     if (contextType != null) {
       var futureUnion = _createFutureOr(contextType);
       InferenceContext.setType(node.expression, futureUnion);
     }
-    return super.visitAwaitExpression(node);
+    super.visitAwaitExpression(node);
   }
 
   @override
-  Object visitBinaryExpression(BinaryExpression node) {
+  void visitBinaryExpression(BinaryExpression node) {
     TokenType operatorType = node.operator.type;
     Expression leftOperand = node.leftOperand;
     Expression rightOperand = node.rightOperand;
@@ -4527,11 +4520,10 @@
       rightOperand?.accept(this);
     }
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitBlockFunctionBody(BlockFunctionBody node) {
+  void visitBlockFunctionBody(BlockFunctionBody node) {
     _overrideManager.enterScope();
     try {
       inferenceContext.pushReturnContext(node);
@@ -4540,28 +4532,26 @@
       _overrideManager.exitScope();
       inferenceContext.popReturnContext(node);
     }
-    return null;
   }
 
   @override
-  Object visitBreakStatement(BreakStatement node) {
+  void visitBreakStatement(BreakStatement node) {
     //
     // We do not visit the label because it needs to be visited in the context
     // of the statement.
     //
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitCascadeExpression(CascadeExpression node) {
+  void visitCascadeExpression(CascadeExpression node) {
     InferenceContext.setTypeFromNode(node.target, node);
-    return super.visitCascadeExpression(node);
+    super.visitCascadeExpression(node);
   }
 
   @override
-  Object visitClassDeclaration(ClassDeclaration node) {
+  void visitClassDeclaration(ClassDeclaration node) {
     //
     // Resolve the metadata in the library scope.
     //
@@ -4582,12 +4572,11 @@
       enclosingClass = outerType;
       _enclosingClassDeclaration = null;
     }
-    return null;
   }
 
   /// Implementation of this method should be synchronized with
   /// [visitClassDeclaration].
-  visitClassDeclarationIncrementally(ClassDeclaration node) {
+  void visitClassDeclarationIncrementally(ClassDeclaration node) {
     //
     // Resolve the metadata in the library scope.
     //
@@ -4603,31 +4592,29 @@
   }
 
   @override
-  Object visitComment(Comment node) {
+  void visitComment(Comment node) {
     AstNode parent = node.parent;
     if (parent is FunctionDeclaration ||
         parent is FunctionTypeAlias ||
         parent is ConstructorDeclaration ||
         parent is MethodDeclaration) {
-      return null;
+      return;
     }
     super.visitComment(node);
-    return null;
   }
 
   @override
-  Object visitCommentReference(CommentReference node) {
+  void visitCommentReference(CommentReference node) {
     //
     // We do not visit the identifier because it needs to be visited in the
     // context of the reference.
     //
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitCompilationUnit(CompilationUnit node) {
+  void visitCompilationUnit(CompilationUnit node) {
     _overrideManager.enterScope();
     try {
       NodeList<Directive> directives = node.directives;
@@ -4645,11 +4632,10 @@
     }
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitConditionalExpression(ConditionalExpression node) {
+  void visitConditionalExpression(ConditionalExpression node) {
     Expression condition = node.condition;
     condition?.accept(this);
     Expression thenExpression = node.thenExpression;
@@ -4696,11 +4682,10 @@
       _propagateFalseState(condition);
       _propagateState(elseExpression);
     }
-    return null;
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     ExecutableElement outerFunction = _enclosingFunction;
     FunctionBody outerFunctionBody = _currentFunctionBody;
     try {
@@ -4716,7 +4701,6 @@
     ConstructorElementImpl constructor = node.declaredElement;
     constructor.constantInitializers =
         _createCloner().cloneNodeList(node.initializers);
-    return null;
   }
 
   @override
@@ -4732,7 +4716,7 @@
   }
 
   @override
-  Object visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
+  void visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
     //
     // We visit the expression, but do not visit the field name because it needs
     // to be visited in the context of the constructor field initializer node.
@@ -4742,11 +4726,10 @@
     node.expression?.accept(this);
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitConstructorName(ConstructorName node) {
+  void visitConstructorName(ConstructorName node) {
     //
     // We do not visit either the type name, because it won't be visited anyway,
     // or the name, because it needs to be visited in the context of the
@@ -4754,22 +4737,20 @@
     //
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitContinueStatement(ContinueStatement node) {
+  void visitContinueStatement(ContinueStatement node) {
     //
     // We do not visit the label because it needs to be visited in the context
     // of the statement.
     //
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitDefaultFormalParameter(DefaultFormalParameter node) {
+  void visitDefaultFormalParameter(DefaultFormalParameter node) {
     InferenceContext.setType(node.defaultValue,
         resolutionMap.elementDeclaredByFormalParameter(node.parameter)?.type);
     super.visitDefaultFormalParameter(node);
@@ -4785,11 +4766,10 @@
       (element as ConstVariableElement).constantInitializer =
           _createCloner().cloneNode(node.defaultValue);
     }
-    return null;
   }
 
   @override
-  Object visitDoStatement(DoStatement node) {
+  void visitDoStatement(DoStatement node) {
     _overrideManager.enterScope();
     try {
       InferenceContext.setType(node.condition, typeProvider.boolType);
@@ -4799,19 +4779,18 @@
     }
     // TODO(brianwilkerson) If the loop can only be exited because the condition
     // is false, then propagateFalseState(node.getCondition());
-    return null;
   }
 
   @override
-  Object visitEmptyFunctionBody(EmptyFunctionBody node) {
+  void visitEmptyFunctionBody(EmptyFunctionBody node) {
     if (resolveOnlyCommentInFunctionBody) {
-      return null;
+      return;
     }
-    return super.visitEmptyFunctionBody(node);
+    super.visitEmptyFunctionBody(node);
   }
 
   @override
-  Object visitEnumDeclaration(EnumDeclaration node) {
+  void visitEnumDeclaration(EnumDeclaration node) {
     //
     // Resolve the metadata in the library scope
     // and associate the annotations with the element.
@@ -4836,13 +4815,12 @@
       enclosingClass = outerType;
       _enclosingClassDeclaration = null;
     }
-    return null;
   }
 
   @override
-  Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
+  void visitExpressionFunctionBody(ExpressionFunctionBody node) {
     if (resolveOnlyCommentInFunctionBody) {
-      return null;
+      return;
     }
     _overrideManager.enterScope();
     try {
@@ -4861,11 +4839,10 @@
       _overrideManager.exitScope();
       inferenceContext.popReturnContext(node);
     }
-    return null;
   }
 
   @override
-  Object visitFieldDeclaration(FieldDeclaration node) {
+  void visitFieldDeclaration(FieldDeclaration node) {
     _overrideManager.enterScope();
     try {
       super.visitFieldDeclaration(node);
@@ -4875,18 +4852,16 @@
       _overrideManager.exitScope();
       _overrideManager.applyOverrides(overrides);
     }
-    return null;
   }
 
   @override
-  Object visitForEachStatement(ForEachStatement node) {
+  void visitForEachStatement(ForEachStatement node) {
     _overrideManager.enterScope();
     try {
       super.visitForEachStatement(node);
     } finally {
       _overrideManager.exitScope();
     }
-    return null;
   }
 
   @override
@@ -4959,14 +4934,13 @@
   }
 
   @override
-  Object visitForStatement(ForStatement node) {
+  void visitForStatement(ForStatement node) {
     _overrideManager.enterScope();
     try {
       super.visitForStatement(node);
     } finally {
       _overrideManager.exitScope();
     }
-    return null;
   }
 
   @override
@@ -4988,7 +4962,7 @@
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     ExecutableElement outerFunction = _enclosingFunction;
     FunctionBody outerFunctionBody = _currentFunctionBody;
     try {
@@ -5002,7 +4976,6 @@
       _currentFunctionBody = outerFunctionBody;
       _enclosingFunction = outerFunction;
     }
-    return null;
   }
 
   @override
@@ -5012,7 +4985,7 @@
   }
 
   @override
-  Object visitFunctionExpression(FunctionExpression node) {
+  void visitFunctionExpression(FunctionExpression node) {
     ExecutableElement outerFunction = _enclosingFunction;
     FunctionBody outerFunctionBody = _currentFunctionBody;
     try {
@@ -5039,21 +5012,19 @@
       _currentFunctionBody = outerFunctionBody;
       _enclosingFunction = outerFunction;
     }
-    return null;
   }
 
   @override
-  Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
+  void visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     node.function?.accept(this);
     node.accept(elementResolver);
     _inferArgumentTypesForInvocation(node);
     node.argumentList?.accept(this);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitFunctionTypeAlias(FunctionTypeAlias node) {
+  void visitFunctionTypeAlias(FunctionTypeAlias node) {
     // Resolve the metadata in the library scope.
     if (node.metadata != null) {
       node.metadata.accept(this);
@@ -5065,7 +5036,6 @@
     } finally {
       _enclosingFunctionTypeAlias = outerAlias;
     }
-    return null;
   }
 
   @override
@@ -5075,20 +5045,19 @@
   }
 
   @override
-  Object visitGenericFunctionType(GenericFunctionType node) => null;
+  void visitGenericFunctionType(GenericFunctionType node) {}
 
   @override
-  Object visitGenericTypeAliasInFunctionScope(GenericTypeAlias node) {
+  void visitGenericTypeAliasInFunctionScope(GenericTypeAlias node) {
     super.visitGenericTypeAliasInFunctionScope(node);
     safelyVisitComment(node.documentationComment);
-    return null;
   }
 
   @override
-  Object visitHideCombinator(HideCombinator node) => null;
+  void visitHideCombinator(HideCombinator node) {}
 
   @override
-  Object visitIfStatement(IfStatement node) {
+  void visitIfStatement(IfStatement node) {
     Expression condition = node.condition;
     InferenceContext.setType(condition, typeProvider.boolType);
     condition?.accept(this);
@@ -5147,11 +5116,10 @@
       perBranchOverrides.add(elseOverrides);
       _overrideManager.mergeOverrides(perBranchOverrides);
     }
-    return null;
   }
 
   @override
-  Object visitIndexExpression(IndexExpression node) {
+  void visitIndexExpression(IndexExpression node) {
     node.target?.accept(this);
     node.accept(elementResolver);
     var method = node.staticElement;
@@ -5161,27 +5129,25 @@
     }
     node.index?.accept(this);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     node.constructorName?.accept(this);
     _inferArgumentTypesForInstanceCreate(node);
     node.argumentList?.accept(this);
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitLabel(Label node) => null;
+  void visitLabel(Label node) {}
 
   @override
-  Object visitLibraryIdentifier(LibraryIdentifier node) => null;
+  void visitLibraryIdentifier(LibraryIdentifier node) {}
 
   @override
-  Object visitListLiteral(ListLiteral node) {
+  void visitListLiteral(ListLiteral node) {
     InterfaceType listT;
 
     if (node.typeArguments != null) {
@@ -5202,11 +5168,10 @@
       InferenceContext.clearType(node);
     }
     super.visitListLiteral(node);
-    return null;
   }
 
   @override
-  Object visitMapLiteral(MapLiteral node) {
+  void visitMapLiteral(MapLiteral node) {
     InterfaceType mapT;
     if (node.typeArguments != null) {
       var targs = node.typeArguments.arguments.map((t) => t.type).toList();
@@ -5215,6 +5180,15 @@
       }
     } else {
       mapT = typeAnalyzer.inferMapType(node, downwards: true);
+      if (mapT != null &&
+          node.typeArguments == null &&
+          node.entries.isEmpty &&
+          typeSystem.isAssignableTo(typeProvider.setNullType, mapT) &&
+          !typeSystem.isAssignableTo(typeProvider.mapNullNullType, mapT)) {
+        // The node is really an empty set literal with no type arguments, so
+        // don't try to visit the replaced map literal.
+        return;
+      }
     }
     if (mapT != null) {
       DartType kType = mapT.typeArguments[0];
@@ -5228,11 +5202,10 @@
       InferenceContext.clearType(node);
     }
     super.visitMapLiteral(node);
-    return null;
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     ExecutableElement outerFunction = _enclosingFunction;
     FunctionBody outerFunctionBody = _currentFunctionBody;
     try {
@@ -5246,7 +5219,6 @@
       _currentFunctionBody = outerFunctionBody;
       _enclosingFunction = outerFunction;
     }
-    return null;
   }
 
   @override
@@ -5256,7 +5228,7 @@
   }
 
   @override
-  Object visitMethodInvocation(MethodInvocation node) {
+  void visitMethodInvocation(MethodInvocation node) {
     //
     // We visit the target and argument list, but do not visit the method name
     // because it needs to be visited in the context of the invocation.
@@ -5267,11 +5239,10 @@
     _inferArgumentTypesForInvocation(node);
     node.argumentList?.accept(this);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitMixinDeclaration(MixinDeclaration node) {
+  void visitMixinDeclaration(MixinDeclaration node) {
     //
     // Resolve the metadata in the library scope.
     //
@@ -5292,31 +5263,29 @@
       enclosingClass = outerType;
       _enclosingMixinDeclaration = null;
     }
-    return null;
   }
 
   @override
-  Object visitNamedExpression(NamedExpression node) {
+  void visitNamedExpression(NamedExpression node) {
     InferenceContext.setTypeFromNode(node.expression, node);
-    return super.visitNamedExpression(node);
+    super.visitNamedExpression(node);
   }
 
   @override
-  Object visitNode(AstNode node) {
+  void visitNode(AstNode node) {
     node.visitChildren(this);
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitParenthesizedExpression(ParenthesizedExpression node) {
+  void visitParenthesizedExpression(ParenthesizedExpression node) {
     InferenceContext.setTypeFromNode(node.expression, node);
-    return super.visitParenthesizedExpression(node);
+    super.visitParenthesizedExpression(node);
   }
 
   @override
-  Object visitPrefixedIdentifier(PrefixedIdentifier node) {
+  void visitPrefixedIdentifier(PrefixedIdentifier node) {
     //
     // We visit the prefix, but do not visit the identifier because it needs to
     // be visited in the context of the prefix.
@@ -5324,11 +5293,10 @@
     node.prefix?.accept(this);
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitPropertyAccess(PropertyAccess node) {
+  void visitPropertyAccess(PropertyAccess node) {
     //
     // We visit the target, but do not visit the property name because it needs
     // to be visited in the context of the property access node.
@@ -5336,11 +5304,10 @@
     node.target?.accept(this);
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitRedirectingConstructorInvocation(
+  void visitRedirectingConstructorInvocation(
       RedirectingConstructorInvocation node) {
     //
     // We visit the argument list, but do not visit the optional identifier
@@ -5352,11 +5319,10 @@
     node.argumentList?.accept(this);
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitReturnStatement(ReturnStatement node) {
+  void visitReturnStatement(ReturnStatement node) {
     Expression e = node.expression;
     InferenceContext.setType(e, inferenceContext.returnContext);
     super.visitReturnStatement(node);
@@ -5369,14 +5335,13 @@
       }
       inferenceContext.addReturnOrYieldType(type);
     }
-    return null;
   }
 
   @override
-  Object visitShowCombinator(ShowCombinator node) => null;
+  void visitShowCombinator(ShowCombinator node) {}
 
   @override
-  Object visitSuperConstructorInvocation(SuperConstructorInvocation node) {
+  void visitSuperConstructorInvocation(SuperConstructorInvocation node) {
     //
     // We visit the argument list, but do not visit the optional identifier
     // because it needs to be visited in the context of the constructor
@@ -5387,11 +5352,10 @@
     node.argumentList?.accept(this);
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitSwitchCase(SwitchCase node) {
+  void visitSwitchCase(SwitchCase node) {
     _overrideManager.enterScope();
     try {
       InferenceContext.setType(
@@ -5400,22 +5364,20 @@
     } finally {
       _overrideManager.exitScope();
     }
-    return null;
   }
 
   @override
-  Object visitSwitchDefault(SwitchDefault node) {
+  void visitSwitchDefault(SwitchDefault node) {
     _overrideManager.enterScope();
     try {
       super.visitSwitchDefault(node);
     } finally {
       _overrideManager.exitScope();
     }
-    return null;
   }
 
   @override
-  Object visitSwitchStatementInScope(SwitchStatement node) {
+  void visitSwitchStatementInScope(SwitchStatement node) {
     var previousExpressionType = _enclosingSwitchStatementExpressionType;
     try {
       node.expression?.accept(this);
@@ -5424,11 +5386,10 @@
     } finally {
       _enclosingSwitchStatementExpressionType = previousExpressionType;
     }
-    return null;
   }
 
   @override
-  Object visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
+  void visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
     _overrideManager.enterScope();
     try {
       super.visitTopLevelVariableDeclaration(node);
@@ -5438,14 +5399,13 @@
       _overrideManager.exitScope();
       _overrideManager.applyOverrides(overrides);
     }
-    return null;
   }
 
   @override
-  Object visitTypeName(TypeName node) => null;
+  void visitTypeName(TypeName node) {}
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     InferenceContext.setTypeFromNode(node.initializer, node);
     super.visitVariableDeclaration(node);
     VariableElement element = node.declaredElement;
@@ -5461,22 +5421,20 @@
       (element as ConstVariableElement).constantInitializer =
           _createCloner().cloneNode(node.initializer);
     }
-    return null;
   }
 
   @override
-  Object visitVariableDeclarationList(VariableDeclarationList node) {
+  void visitVariableDeclarationList(VariableDeclarationList node) {
     for (VariableDeclaration decl in node.variables) {
       VariableElement variableElement =
           resolutionMap.elementDeclaredByVariableDeclaration(decl);
       InferenceContext.setType(decl, variableElement?.type);
     }
     super.visitVariableDeclarationList(node);
-    return null;
   }
 
   @override
-  Object visitWhileStatement(WhileStatement node) {
+  void visitWhileStatement(WhileStatement node) {
     // Note: since we don't call the base class, we have to maintain
     // _implicitLabelScope ourselves.
     ImplicitLabelScope outerImplicitScope = _implicitLabelScope;
@@ -5502,11 +5460,10 @@
     // is false, then propagateFalseState(condition);
     node.accept(elementResolver);
     node.accept(typeAnalyzer);
-    return null;
   }
 
   @override
-  Object visitYieldStatement(YieldStatement node) {
+  void visitYieldStatement(YieldStatement node) {
     Expression e = node.expression;
     DartType returnType = inferenceContext.returnContext;
     bool isGenerator = _enclosingFunction?.isGenerator ?? false;
@@ -5542,7 +5499,6 @@
         inferenceContext.addReturnOrYieldType(type);
       }
     }
-    return null;
   }
 
   /// Checks each promoted variable in the current scope for compliance with the
@@ -6110,7 +6066,7 @@
 
 /// The abstract class `ScopedVisitor` maintains name and label scopes as an AST
 /// structure is being visited.
-abstract class ScopedVisitor extends UnifyingAstVisitor<Object> {
+abstract class ScopedVisitor extends UnifyingAstVisitor<void> {
   /// The element for the library containing the compilation unit being visited.
   final LibraryElement definingLibrary;
 
@@ -6185,7 +6141,7 @@
   }
 
   @override
-  Object visitBlock(Block node) {
+  void visitBlock(Block node) {
     Scope outerScope = nameScope;
     try {
       EnclosedScope enclosedScope = new BlockScope(nameScope, node);
@@ -6194,11 +6150,10 @@
     } finally {
       nameScope = outerScope;
     }
-    return null;
   }
 
   @override
-  Object visitBlockFunctionBody(BlockFunctionBody node) {
+  void visitBlockFunctionBody(BlockFunctionBody node) {
     ImplicitLabelScope implicitOuterScope = _implicitLabelScope;
     try {
       _implicitLabelScope = ImplicitLabelScope.ROOT;
@@ -6206,11 +6161,10 @@
     } finally {
       _implicitLabelScope = implicitOuterScope;
     }
-    return null;
   }
 
   @override
-  Object visitCatchClause(CatchClause node) {
+  void visitCatchClause(CatchClause node) {
     SimpleIdentifier exception = node.exceptionParameter;
     if (exception != null) {
       Scope outerScope = nameScope;
@@ -6228,11 +6182,10 @@
     } else {
       super.visitCatchClause(node);
     }
-    return null;
   }
 
   @override
-  Object visitClassDeclaration(ClassDeclaration node) {
+  void visitClassDeclaration(ClassDeclaration node) {
     ClassElement classElement = node.declaredElement;
     Scope outerScope = nameScope;
     try {
@@ -6256,7 +6209,6 @@
     } finally {
       nameScope = outerScope;
     }
-    return null;
   }
 
   void visitClassDeclarationInScope(ClassDeclaration node) {
@@ -6275,7 +6227,7 @@
   }
 
   @override
-  Object visitClassTypeAlias(ClassTypeAlias node) {
+  void visitClassTypeAlias(ClassTypeAlias node) {
     Scope outerScope = nameScope;
     try {
       ClassElement element = node.declaredElement;
@@ -6285,11 +6237,10 @@
     } finally {
       nameScope = outerScope;
     }
-    return null;
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     ConstructorElement constructorElement = node.declaredElement;
     if (constructorElement == null) {
       StringBuffer buffer = new StringBuffer();
@@ -6329,7 +6280,6 @@
     } finally {
       nameScope = outerScope;
     }
-    return null;
   }
 
   void visitConstructorDeclarationInScope(ConstructorDeclaration node) {
@@ -6337,17 +6287,16 @@
   }
 
   @override
-  Object visitDeclaredIdentifier(DeclaredIdentifier node) {
+  void visitDeclaredIdentifier(DeclaredIdentifier node) {
     VariableElement element = node.declaredElement;
     if (element != null) {
       nameScope.define(element);
     }
     super.visitDeclaredIdentifier(node);
-    return null;
   }
 
   @override
-  Object visitDoStatement(DoStatement node) {
+  void visitDoStatement(DoStatement node) {
     ImplicitLabelScope outerImplicitScope = _implicitLabelScope;
     try {
       _implicitLabelScope = _implicitLabelScope.nest(node);
@@ -6356,11 +6305,10 @@
     } finally {
       _implicitLabelScope = outerImplicitScope;
     }
-    return null;
   }
 
   @override
-  Object visitEnumDeclaration(EnumDeclaration node) {
+  void visitEnumDeclaration(EnumDeclaration node) {
     ClassElement classElement = node.declaredElement;
     Scope outerScope = nameScope;
     try {
@@ -6382,7 +6330,6 @@
     } finally {
       nameScope = outerScope;
     }
-    return null;
   }
 
   void visitEnumMembersInScope(EnumDeclaration node) {
@@ -6392,7 +6339,7 @@
   }
 
   @override
-  Object visitForEachStatement(ForEachStatement node) {
+  void visitForEachStatement(ForEachStatement node) {
     Scope outerNameScope = nameScope;
     ImplicitLabelScope outerImplicitScope = _implicitLabelScope;
     try {
@@ -6403,7 +6350,6 @@
       nameScope = outerNameScope;
       _implicitLabelScope = outerImplicitScope;
     }
-    return null;
   }
 
   /// Visit the given statement after it's scope has been created. This replaces
@@ -6423,7 +6369,7 @@
   }
 
   @override
-  Object visitFormalParameterList(FormalParameterList node) {
+  void visitFormalParameterList(FormalParameterList node) {
     super.visitFormalParameterList(node);
     // We finished resolving function signature, now include formal parameters
     // scope.  Note: we must not do this if the parent is a
@@ -6436,11 +6382,10 @@
     if (nameScope is FunctionTypeScope) {
       (nameScope as FunctionTypeScope).defineParameters();
     }
-    return null;
   }
 
   @override
-  Object visitForStatement(ForStatement node) {
+  void visitForStatement(ForStatement node) {
     Scope outerNameScope = nameScope;
     ImplicitLabelScope outerImplicitScope = _implicitLabelScope;
     try {
@@ -6451,7 +6396,6 @@
       nameScope = outerNameScope;
       _implicitLabelScope = outerImplicitScope;
     }
-    return null;
   }
 
   /// Visit the given statement after it's scope has been created. This replaces
@@ -6468,7 +6412,7 @@
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     ExecutableElement functionElement = node.declaredElement;
     if (functionElement != null &&
         functionElement.enclosingElement is! CompilationUnitElement) {
@@ -6487,7 +6431,6 @@
     } finally {
       nameScope = outerScope;
     }
-    return null;
   }
 
   void visitFunctionDeclarationInScope(FunctionDeclaration node) {
@@ -6495,7 +6438,7 @@
   }
 
   @override
-  Object visitFunctionExpression(FunctionExpression node) {
+  void visitFunctionExpression(FunctionExpression node) {
     if (node.parent is FunctionDeclaration) {
       // We have already created a function scope and don't need to do so again.
       super.visitFunctionExpression(node);
@@ -6528,11 +6471,10 @@
         nameScope = outerScope;
       }
     }
-    return null;
   }
 
   @override
-  Object visitFunctionTypeAlias(FunctionTypeAlias node) {
+  void visitFunctionTypeAlias(FunctionTypeAlias node) {
     Scope outerScope = nameScope;
     try {
       nameScope = new FunctionTypeScope(nameScope, node.declaredElement);
@@ -6540,7 +6482,6 @@
     } finally {
       nameScope = outerScope;
     }
-    return null;
   }
 
   void visitFunctionTypeAliasInScope(FunctionTypeAlias node) {
@@ -6548,7 +6489,7 @@
   }
 
   @override
-  Object visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
+  void visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
     Scope outerScope = nameScope;
     try {
       ParameterElement parameterElement = node.declaredElement;
@@ -6569,16 +6510,16 @@
     } finally {
       nameScope = outerScope;
     }
-    return null;
   }
 
   @override
-  Object visitGenericFunctionType(GenericFunctionType node) {
+  void visitGenericFunctionType(GenericFunctionType node) {
     DartType type = node.type;
     if (type == null) {
       // The function type hasn't been resolved yet, so we can't create a scope
       // for its parameters.
-      return super.visitGenericFunctionType(node);
+      super.visitGenericFunctionType(node);
+      return;
     }
     GenericFunctionTypeElement element = type.element;
     Scope outerScope = nameScope;
@@ -6595,11 +6536,10 @@
     } finally {
       nameScope = outerScope;
     }
-    return null;
   }
 
   @override
-  Object visitGenericTypeAlias(GenericTypeAlias node) {
+  void visitGenericTypeAlias(GenericTypeAlias node) {
     GenericTypeAliasElement element = node.declaredElement;
     Scope outerScope = nameScope;
     try {
@@ -6622,34 +6562,29 @@
     } finally {
       nameScope = outerScope;
     }
-    return null;
   }
 
-  Object visitGenericTypeAliasInFunctionScope(GenericTypeAlias node) {
-    return null;
-  }
+  void visitGenericTypeAliasInFunctionScope(GenericTypeAlias node) {}
 
   @override
-  Object visitIfStatement(IfStatement node) {
+  void visitIfStatement(IfStatement node) {
     node.condition?.accept(this);
     visitStatementInScope(node.thenStatement);
     visitStatementInScope(node.elseStatement);
-    return null;
   }
 
   @override
-  Object visitLabeledStatement(LabeledStatement node) {
+  void visitLabeledStatement(LabeledStatement node) {
     LabelScope outerScope = _addScopesFor(node.labels, node.unlabeled);
     try {
       super.visitLabeledStatement(node);
     } finally {
       labelScope = outerScope;
     }
-    return null;
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     Scope outerScope = nameScope;
     try {
       ExecutableElement methodElement = node.declaredElement;
@@ -6664,7 +6599,6 @@
     } finally {
       nameScope = outerScope;
     }
-    return null;
   }
 
   void visitMethodDeclarationInScope(MethodDeclaration node) {
@@ -6672,7 +6606,7 @@
   }
 
   @override
-  Object visitMixinDeclaration(MixinDeclaration node) {
+  void visitMixinDeclaration(MixinDeclaration node) {
     ClassElement element = node.declaredElement;
 
     Scope outerScope = nameScope;
@@ -6689,7 +6623,6 @@
       nameScope = outerScope;
       enclosingClass = outerClass;
     }
-    return null;
   }
 
   void visitMixinDeclarationInScope(MixinDeclaration node) {
@@ -6727,7 +6660,7 @@
   }
 
   @override
-  Object visitSwitchCase(SwitchCase node) {
+  void visitSwitchCase(SwitchCase node) {
     node.expression.accept(this);
     Scope outerNameScope = nameScope;
     try {
@@ -6736,11 +6669,10 @@
     } finally {
       nameScope = outerNameScope;
     }
-    return null;
   }
 
   @override
-  Object visitSwitchDefault(SwitchDefault node) {
+  void visitSwitchDefault(SwitchDefault node) {
     Scope outerNameScope = nameScope;
     try {
       nameScope = new EnclosedScope(nameScope);
@@ -6748,11 +6680,10 @@
     } finally {
       nameScope = outerNameScope;
     }
-    return null;
   }
 
   @override
-  Object visitSwitchStatement(SwitchStatement node) {
+  void visitSwitchStatement(SwitchStatement node) {
     LabelScope outerScope = labelScope;
     ImplicitLabelScope outerImplicitScope = _implicitLabelScope;
     try {
@@ -6770,7 +6701,6 @@
       labelScope = outerScope;
       _implicitLabelScope = outerImplicitScope;
     }
-    return null;
   }
 
   void visitSwitchStatementInScope(SwitchStatement node) {
@@ -6778,7 +6708,7 @@
   }
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     super.visitVariableDeclaration(node);
     if (node.parent.parent is! TopLevelVariableDeclaration &&
         node.parent.parent is! FieldDeclaration) {
@@ -6787,11 +6717,10 @@
         nameScope.define(element);
       }
     }
-    return null;
   }
 
   @override
-  Object visitWhileStatement(WhileStatement node) {
+  void visitWhileStatement(WhileStatement node) {
     node.condition?.accept(this);
     ImplicitLabelScope outerImplicitScope = _implicitLabelScope;
     try {
@@ -6800,7 +6729,6 @@
     } finally {
       _implicitLabelScope = outerImplicitScope;
     }
-    return null;
   }
 
   /// Add scopes for each of the given labels.
@@ -7889,6 +7817,9 @@
   /// Return the type representing the built-in type 'List'.
   InterfaceType get listType;
 
+  /// Return the type representing 'Map<Null, Null>'.
+  InterfaceType get mapNullNullType;
+
   /// Return the type representing the built-in type 'Map'.
   InterfaceType get mapType;
 
@@ -7908,6 +7839,12 @@
   /// Return the type representing the built-in type 'Object'.
   InterfaceType get objectType;
 
+  /// Return the type representing 'Set<Null>'.
+  InterfaceType get setNullType;
+
+  /// Return the type representing the built-in type 'Set'.
+  InterfaceType get setType;
+
   /// Return the type representing the built-in type 'StackTrace'.
   InterfaceType get stackTraceType;
 
@@ -8025,9 +7962,18 @@
   /// The type representing the built-in type 'Map'.
   InterfaceType _mapType;
 
+  /// The type representing the built-in type 'Map<Null, Null>'.
+  InterfaceType _mapNullNullType;
+
   /// An shared object representing the value 'null'.
   DartObjectImpl _nullObject;
 
+  /// The type representing the type 'Set'.
+  InterfaceType _setType;
+
+  /// The type representing the type 'Set<Null>'.
+  InterfaceType _setNullType;
+
   /// The type representing the type 'Null'.
   InterfaceType _nullType;
 
@@ -8121,6 +8067,9 @@
   InterfaceType get listType => _listType;
 
   @override
+  InterfaceType get mapNullNullType => _mapNullNullType;
+
+  @override
   InterfaceType get mapType => _mapType;
 
   @override
@@ -8141,6 +8090,12 @@
   InterfaceType get objectType => _objectType;
 
   @override
+  InterfaceType get setNullType => _setNullType;
+
+  @override
+  InterfaceType get setType => _setType;
+
+  @override
   InterfaceType get stackTraceType => _stackTraceType;
 
   @override
@@ -8195,6 +8150,7 @@
     _nullType = _getType(coreNamespace, "Null");
     _numType = _getType(coreNamespace, "num");
     _objectType = _getType(coreNamespace, "Object");
+    _setType = _getType(coreNamespace, "Set");
     _stackTraceType = _getType(coreNamespace, "StackTrace");
     _streamType = _getType(asyncNamespace, "Stream");
     _stringType = _getType(coreNamespace, "String");
@@ -8204,6 +8160,8 @@
     _futureDynamicType = _futureType.instantiate(<DartType>[_dynamicType]);
     _futureNullType = _futureType.instantiate(<DartType>[_nullType]);
     _iterableDynamicType = _iterableType.instantiate(<DartType>[_dynamicType]);
+    _mapNullNullType = _mapType.instantiate(<DartType>[_nullType, _nullType]);
+    _setNullType = _setType.instantiate(<DartType>[_nullType]);
     _streamDynamicType = _streamType.instantiate(<DartType>[_dynamicType]);
     // FutureOr<T> is still fairly new, so if we're analyzing an SDK that
     // doesn't have it yet, create an element for it.
@@ -8311,7 +8269,7 @@
   }
 
   @override
-  Object visitAnnotation(Annotation node) {
+  void visitAnnotation(Annotation node) {
     //
     // Visit annotations, if the annotation is @proxy, on a class, and "proxy"
     // resolves to the proxy annotation in dart.core, then resolve the
@@ -8336,11 +8294,10 @@
         elementAnnotation.element = element;
       }
     }
-    return null;
   }
 
   @override
-  Object visitCatchClause(CatchClause node) {
+  void visitCatchClause(CatchClause node) {
     super.visitCatchClause(node);
     SimpleIdentifier exception = node.exceptionParameter;
     if (exception != null) {
@@ -8372,11 +8329,10 @@
         // TODO(brianwilkerson) Report the internal error
       }
     }
-    return null;
   }
 
   @override
-  Object visitClassDeclaration(ClassDeclaration node) {
+  void visitClassDeclaration(ClassDeclaration node) {
     _hasReferenceToSuper = false;
     super.visitClassDeclaration(node);
     ClassElementImpl classElement = _getClassElement(node.name);
@@ -8385,7 +8341,6 @@
       classElement.hasBeenInferred = false;
       classElement.hasReferenceToSuper = _hasReferenceToSuper;
     }
-    return null;
   }
 
   @override
@@ -8414,7 +8369,6 @@
     }
     _resolveWithClause(classElement, withClause);
     _resolveImplementsClause(classElement, implementsClause);
-    return null;
   }
 
   @override
@@ -8443,7 +8397,7 @@
   }
 
   @override
-  Object visitClassTypeAlias(ClassTypeAlias node) {
+  void visitClassTypeAlias(ClassTypeAlias node) {
     super.visitClassTypeAlias(node);
     ErrorCode errorCode = CompileTimeErrorCode.MIXIN_WITH_NON_CLASS_SUPERCLASS;
     InterfaceType superclassType =
@@ -8457,15 +8411,14 @@
     }
     _resolveWithClause(classElement, node.withClause);
     _resolveImplementsClause(classElement, node.implementsClause);
-    return null;
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     super.visitConstructorDeclaration(node);
     if (node.declaredElement == null) {
       ClassDeclaration classNode =
-          node.getAncestor((node) => node is ClassDeclaration);
+          node.thisOrAncestorOfType<ClassDeclaration>();
       StringBuffer buffer = new StringBuffer();
       buffer.write("The element for the constructor ");
       buffer.write(node.name == null ? "<unnamed>" : node.name.name);
@@ -8481,11 +8434,10 @@
       AnalysisEngine.instance.logger.logError(buffer.toString(),
           new CaughtException(new AnalysisException(), null));
     }
-    return null;
   }
 
   @override
-  Object visitDeclaredIdentifier(DeclaredIdentifier node) {
+  void visitDeclaredIdentifier(DeclaredIdentifier node) {
     super.visitDeclaredIdentifier(node);
     DartType declaredType;
     TypeAnnotation typeName = node.type;
@@ -8497,11 +8449,10 @@
     LocalVariableElementImpl element =
         node.declaredElement as LocalVariableElementImpl;
     element.declaredType = declaredType;
-    return null;
   }
 
   @override
-  Object visitFieldFormalParameter(FieldFormalParameter node) {
+  void visitFieldFormalParameter(FieldFormalParameter node) {
     super.visitFieldFormalParameter(node);
     Element element = node.identifier.staticElement;
     if (element is ParameterElementImpl) {
@@ -8526,11 +8477,10 @@
     } else {
       // TODO(brianwilkerson) Report this internal error
     }
-    return null;
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     super.visitFunctionDeclaration(node);
     ExecutableElementImpl element =
         node.declaredElement as ExecutableElementImpl;
@@ -8547,19 +8497,17 @@
     element.declaredReturnType = _computeReturnType(node.returnType);
     element.type = new FunctionTypeImpl(element);
     _inferSetterReturnType(element);
-    return null;
   }
 
   @override
-  Object visitFunctionTypeAlias(FunctionTypeAlias node) {
+  void visitFunctionTypeAlias(FunctionTypeAlias node) {
     var element = node.declaredElement as GenericTypeAliasElementImpl;
     super.visitFunctionTypeAlias(node);
     element.function.returnType = _computeReturnType(node.returnType);
-    return null;
   }
 
   @override
-  Object visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
+  void visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
     super.visitFunctionTypedFormalParameter(node);
     Element element = node.identifier.staticElement;
     if (element is ParameterElementImpl) {
@@ -8567,28 +8515,26 @@
     } else {
       // TODO(brianwilkerson) Report this internal error
     }
-    return null;
   }
 
   @override
-  Object visitGenericFunctionType(GenericFunctionType node) {
+  void visitGenericFunctionType(GenericFunctionType node) {
     GenericFunctionTypeElementImpl element = node.type?.element;
     if (element != null) {
       super.visitGenericFunctionType(node);
       element.returnType =
           _computeReturnType(node.returnType) ?? DynamicTypeImpl.instance;
     }
-    return null;
   }
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     super.visitMethodDeclaration(node);
     ExecutableElementImpl element =
         node.declaredElement as ExecutableElementImpl;
     if (element == null) {
       ClassDeclaration classNode =
-          node.getAncestor((node) => node is ClassDeclaration);
+          node.thisOrAncestorOfType<ClassDeclaration>();
       StringBuffer buffer = new StringBuffer();
       buffer.write("The element for the method ");
       buffer.write(node.name.name);
@@ -8609,7 +8555,7 @@
     // already set - statically or inferred. We don't want to overwrite them.
     if (LibraryElementImpl.hasResolutionCapability(
         definingLibrary, LibraryResolutionCapability.resolvedTypeNames)) {
-      return null;
+      return;
     }
 
     element.declaredReturnType = _computeReturnType(node.returnType);
@@ -8630,8 +8576,6 @@
         variable.declaredType = type;
       }
     }
-
-    return null;
   }
 
   @override
@@ -8640,25 +8584,24 @@
     MixinElementImpl element = node.declaredElement;
     _resolveOnClause(element, node.onClause);
     _resolveImplementsClause(element, node.implementsClause);
-    return null;
   }
 
   @override
-  Object visitNode(AstNode node) {
+  void visitNode(AstNode node) {
     // In API mode we need to skip:
     //   - function bodies;
     //   - default values of parameters;
     //   - initializers of top-level variables.
     if (mode == TypeResolverMode.api) {
       if (node is FunctionBody) {
-        return null;
+        return;
       }
       if (node is DefaultFormalParameter) {
         node.parameter.accept(this);
-        return null;
+        return;
       }
       if (node is VariableDeclaration) {
-        return null;
+        return;
       }
     }
 
@@ -8672,7 +8615,8 @@
     if (mode == TypeResolverMode.local) {
       // We are in the state of visiting all nodes.
       if (_localModeVisitAll) {
-        return super.visitNode(node);
+        super.visitNode(node);
+        return;
       }
 
       // Ensure that the name scope is ready.
@@ -8740,15 +8684,14 @@
       } else if (node is VariableDeclarationList) {
         node.variables.forEach(visitNode);
       }
-      return null;
+      return;
     }
-
     // The mode in which we visit all nodes.
-    return super.visitNode(node);
+    super.visitNode(node);
   }
 
   @override
-  Object visitSimpleFormalParameter(SimpleFormalParameter node) {
+  void visitSimpleFormalParameter(SimpleFormalParameter node) {
     super.visitSimpleFormalParameter(node);
     DartType declaredType;
     TypeAnnotation typeName = node.type;
@@ -8763,25 +8706,23 @@
     } else {
       // TODO(brianwilkerson) Report the internal error.
     }
-    return null;
   }
 
   @override
-  Object visitSuperExpression(SuperExpression node) {
+  void visitSuperExpression(SuperExpression node) {
     _hasReferenceToSuper = true;
-    return super.visitSuperExpression(node);
+    super.visitSuperExpression(node);
   }
 
   @override
-  Object visitTypeName(TypeName node) {
+  void visitTypeName(TypeName node) {
     super.visitTypeName(node);
     _typeNameResolver.nameScope = this.nameScope;
     _typeNameResolver.resolveTypeName(node);
-    return null;
   }
 
   @override
-  Object visitTypeParameter(TypeParameter node) {
+  void visitTypeParameter(TypeParameter node) {
     super.visitTypeParameter(node);
     AstNode parent2 = node.parent?.parent;
     if (parent2 is ClassDeclaration ||
@@ -8800,11 +8741,10 @@
         }
       }
     }
-    return null;
   }
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     super.visitVariableDeclaration(node);
     var variableList = node.parent as VariableDeclarationList;
     // When the library is resynthesized, the types of field elements are
@@ -8812,7 +8752,7 @@
     if (variableList.parent is FieldDeclaration &&
         LibraryElementImpl.hasResolutionCapability(
             definingLibrary, LibraryResolutionCapability.resolvedTypeNames)) {
-      return null;
+      return;
     }
     // Resolve the type.
     DartType declaredType;
@@ -8826,7 +8766,6 @@
     if (element is VariableElementImpl) {
       element.declaredType = declaredType;
     }
-    return null;
   }
 
   /// Given the [returnType] of a function, compute the return type of the
@@ -9264,20 +9203,20 @@
             nameScope: nameScope);
 
   @override
-  Object visitBlockFunctionBody(BlockFunctionBody node) {
+  void visitBlockFunctionBody(BlockFunctionBody node) {
     assert(_localVariableInfo != null);
-    return super.visitBlockFunctionBody(node);
+    super.visitBlockFunctionBody(node);
   }
 
   @override
-  Object visitConstructorDeclaration(ConstructorDeclaration node) {
+  void visitConstructorDeclaration(ConstructorDeclaration node) {
     ExecutableElement outerFunction = _enclosingFunction;
     LocalVariableInfo outerLocalVariableInfo = _localVariableInfo;
     try {
       _localVariableInfo ??= new LocalVariableInfo();
       (node.body as FunctionBodyImpl).localVariableInfo = _localVariableInfo;
       _enclosingFunction = node.declaredElement;
-      return super.visitConstructorDeclaration(node);
+      super.visitConstructorDeclaration(node);
     } finally {
       _localVariableInfo = outerLocalVariableInfo;
       _enclosingFunction = outerFunction;
@@ -9285,16 +9224,16 @@
   }
 
   @override
-  Object visitExportDirective(ExportDirective node) => null;
+  void visitExportDirective(ExportDirective node) {}
 
   @override
-  Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
+  void visitExpressionFunctionBody(ExpressionFunctionBody node) {
     assert(_localVariableInfo != null);
-    return super.visitExpressionFunctionBody(node);
+    super.visitExpressionFunctionBody(node);
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     ExecutableElement outerFunction = _enclosingFunction;
     LocalVariableInfo outerLocalVariableInfo = _localVariableInfo;
     try {
@@ -9302,7 +9241,7 @@
       (node.functionExpression.body as FunctionBodyImpl).localVariableInfo =
           _localVariableInfo;
       _enclosingFunction = node.declaredElement;
-      return super.visitFunctionDeclaration(node);
+      super.visitFunctionDeclaration(node);
     } finally {
       _localVariableInfo = outerLocalVariableInfo;
       _enclosingFunction = outerFunction;
@@ -9310,7 +9249,7 @@
   }
 
   @override
-  Object visitFunctionExpression(FunctionExpression node) {
+  void visitFunctionExpression(FunctionExpression node) {
     if (node.parent is! FunctionDeclaration) {
       ExecutableElement outerFunction = _enclosingFunction;
       LocalVariableInfo outerLocalVariableInfo = _localVariableInfo;
@@ -9318,28 +9257,28 @@
         _localVariableInfo ??= new LocalVariableInfo();
         (node.body as FunctionBodyImpl).localVariableInfo = _localVariableInfo;
         _enclosingFunction = node.declaredElement;
-        return super.visitFunctionExpression(node);
+        super.visitFunctionExpression(node);
       } finally {
         _localVariableInfo = outerLocalVariableInfo;
         _enclosingFunction = outerFunction;
       }
     } else {
-      return super.visitFunctionExpression(node);
+      super.visitFunctionExpression(node);
     }
   }
 
   @override
-  Object visitImportDirective(ImportDirective node) => null;
+  void visitImportDirective(ImportDirective node) {}
 
   @override
-  Object visitMethodDeclaration(MethodDeclaration node) {
+  void visitMethodDeclaration(MethodDeclaration node) {
     ExecutableElement outerFunction = _enclosingFunction;
     LocalVariableInfo outerLocalVariableInfo = _localVariableInfo;
     try {
       _localVariableInfo ??= new LocalVariableInfo();
       (node.body as FunctionBodyImpl).localVariableInfo = _localVariableInfo;
       _enclosingFunction = node.declaredElement;
-      return super.visitMethodDeclaration(node);
+      super.visitMethodDeclaration(node);
     } finally {
       _localVariableInfo = outerLocalVariableInfo;
       _enclosingFunction = outerFunction;
@@ -9347,43 +9286,43 @@
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     // Ignore if already resolved - declaration or type.
     if (node.inDeclarationContext()) {
-      return null;
+      return;
     }
     // Ignore if it cannot be a reference to a local variable.
     AstNode parent = node.parent;
     if (parent is FieldFormalParameter) {
-      return null;
+      return;
     } else if (parent is ConstructorDeclaration && parent.returnType == node) {
-      return null;
+      return;
     } else if (parent is ConstructorFieldInitializer &&
         parent.fieldName == node) {
-      return null;
+      return;
     }
     // Ignore if qualified.
     if (parent is PrefixedIdentifier && identical(parent.identifier, node)) {
-      return null;
+      return;
     }
     if (parent is PropertyAccess && identical(parent.propertyName, node)) {
-      return null;
+      return;
     }
     if (parent is MethodInvocation &&
         identical(parent.methodName, node) &&
         parent.realTarget != null) {
-      return null;
+      return;
     }
     if (parent is ConstructorName) {
-      return null;
+      return;
     }
     if (parent is Label) {
-      return null;
+      return;
     }
     // Prepare VariableElement.
     Element element = nameScope.lookup(node, definingLibrary);
     if (element is! VariableElement) {
-      return null;
+      return;
     }
     // Must be local or parameter.
     ElementKind kind = element.kind;
@@ -9396,13 +9335,10 @@
         }
       }
     }
-    return null;
   }
 
   @override
-  Object visitTypeName(TypeName node) {
-    return null;
-  }
+  void visitTypeName(TypeName node) {}
 }
 
 class _InvalidAccessVerifier {
@@ -9614,7 +9550,7 @@
 }
 
 class _ResolverVisitor_isVariableAccessedInClosure
-    extends RecursiveAstVisitor<Object> {
+    extends RecursiveAstVisitor<void> {
   final Element variable;
 
   bool result = false;
@@ -9624,30 +9560,29 @@
   _ResolverVisitor_isVariableAccessedInClosure(this.variable);
 
   @override
-  Object visitFunctionExpression(FunctionExpression node) {
+  void visitFunctionExpression(FunctionExpression node) {
     bool inClosure = this._inClosure;
     try {
       this._inClosure = true;
-      return super.visitFunctionExpression(node);
+      super.visitFunctionExpression(node);
     } finally {
       this._inClosure = inClosure;
     }
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     if (result) {
-      return null;
+      return;
     }
     if (_inClosure && identical(node.staticElement, variable)) {
       result = true;
     }
-    return null;
   }
 }
 
 class _ResolverVisitor_isVariablePotentiallyMutatedIn
-    extends RecursiveAstVisitor<Object> {
+    extends RecursiveAstVisitor<void> {
   final Element variable;
 
   bool result = false;
@@ -9655,15 +9590,14 @@
   _ResolverVisitor_isVariablePotentiallyMutatedIn(this.variable);
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     if (result) {
-      return null;
+      return;
     }
     if (identical(node.staticElement, variable)) {
       if (node.inSetterContext()) {
         result = true;
       }
     }
-    return null;
   }
 }
diff --git a/pkg/analyzer/lib/src/generated/sdk.dart b/pkg/analyzer/lib/src/generated/sdk.dart
index d024db1..c7ae2db 100644
--- a/pkg/analyzer/lib/src/generated/sdk.dart
+++ b/pkg/analyzer/lib/src/generated/sdk.dart
@@ -265,7 +265,7 @@
   }
 }
 
-class SdkLibrariesReader_LibraryBuilder extends RecursiveAstVisitor<Object> {
+class SdkLibrariesReader_LibraryBuilder extends RecursiveAstVisitor<void> {
   /**
    * The prefix added to the name of a library to form the URI used in code to
    * reference the library.
@@ -351,7 +351,7 @@
   }
 
   @override
-  Object visitMapLiteralEntry(MapLiteralEntry node) {
+  void visitMapLiteralEntry(MapLiteralEntry node) {
     String libraryName = null;
     Expression key = node.key;
     if (key is SimpleStringLiteral) {
@@ -392,7 +392,6 @@
       }
       _librariesMap.setLibrary(libraryName, library);
     }
-    return null;
   }
 }
 
diff --git a/pkg/analyzer/lib/src/generated/static_type_analyzer.dart b/pkg/analyzer/lib/src/generated/static_type_analyzer.dart
index dfc94e4..378592a 100644
--- a/pkg/analyzer/lib/src/generated/static_type_analyzer.dart
+++ b/pkg/analyzer/lib/src/generated/static_type_analyzer.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -11,6 +11,8 @@
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/src/dart/ast/ast.dart';
+import 'package:analyzer/src/dart/ast/ast_factory.dart';
+import 'package:analyzer/src/dart/ast/utilities.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/member.dart' show ConstructorMember;
 import 'package:analyzer/src/dart/element/type.dart';
@@ -28,7 +30,7 @@
  * * Every node representing an expression should be resolved to the Type of the expression.
  * </ol>
  */
-class StaticTypeAnalyzer extends SimpleAstVisitor<Object> {
+class StaticTypeAnalyzer extends SimpleAstVisitor<void> {
   /**
    * The resolver driving the resolution and type analysis.
    */
@@ -171,6 +173,22 @@
 
   ParameterizedType inferMapType(MapLiteral node, {bool downwards: false}) {
     DartType contextType = InferenceContext.getContext(node);
+    if (contextType != null &&
+        node.typeArguments == null &&
+        node.entries.isEmpty &&
+        _typeSystem.isAssignableTo(_typeProvider.setNullType, contextType) &&
+        !_typeSystem.isAssignableTo(
+            _typeProvider.mapNullNullType, contextType)) {
+      // The node is really an empty set literal with no type arguments. Rewrite
+      // the AST and infer the type of the set as appropriate.
+      SetLiteral setLiteral = new AstFactoryImpl().setLiteral(
+          node.constKeyword, null, node.leftBracket, null, node.rightBracket);
+      InferenceContext.setType(setLiteral, contextType);
+      NodeReplacer.replace(node, setLiteral);
+      DartType type = inferSetType(setLiteral, downwards: downwards);
+      setLiteral.staticType = type;
+      return type;
+    }
     List<DartType> elementTypes;
     List<ParameterElement> parameters;
     if (downwards) {
@@ -206,14 +224,46 @@
     return inferred;
   }
 
+  DartType inferSetType(SetLiteral node, {bool downwards: false}) {
+    DartType contextType = InferenceContext.getContext(node);
+
+    var ts = _typeSystem as StrongTypeSystemImpl;
+    List<DartType> elementTypes;
+    List<ParameterElement> parameters;
+
+    if (downwards) {
+      if (contextType == null) {
+        return null;
+      }
+
+      elementTypes = [];
+      parameters = [];
+    } else {
+      // Also use upwards information to infer the type.
+      elementTypes = node.elements
+          .map((e) => e.staticType)
+          .where((t) => t != null)
+          .toList();
+      var setTypeParam = _typeProvider.setType.typeParameters[0].type;
+      var syntheticParamElement = new ParameterElementImpl.synthetic(
+          'element', setTypeParam, ParameterKind.POSITIONAL);
+      parameters = new List.filled(elementTypes.length, syntheticParamElement);
+    }
+    DartType inferred = ts.inferGenericFunctionOrType<InterfaceType>(
+        _typeProvider.setType, parameters, elementTypes, contextType,
+        downwards: downwards,
+        errorReporter: _resolver.errorReporter,
+        errorNode: node);
+    return inferred;
+  }
+
   /**
    * The Dart Language Specification, 12.5: <blockquote>The static type of a string literal is
    * `String`.</blockquote>
    */
   @override
-  Object visitAdjacentStrings(AdjacentStrings node) {
+  void visitAdjacentStrings(AdjacentStrings node) {
     _recordStaticType(node, _typeProvider.stringType);
-    return null;
   }
 
   /**
@@ -225,9 +275,8 @@
    * The static type of a cast expression <i>e as T</i> is <i>T</i>.</blockquote>
    */
   @override
-  Object visitAsExpression(AsExpression node) {
+  void visitAsExpression(AsExpression node) {
     _recordStaticType(node, _getType(node.type));
-    return null;
   }
 
   /**
@@ -270,7 +319,7 @@
    * <i>e<sub>3</sub></i>.</blockquote>
    */
   @override
-  Object visitAssignmentExpression(AssignmentExpression node) {
+  void visitAssignmentExpression(AssignmentExpression node) {
     TokenType operator = node.operator.type;
     if (operator == TokenType.EQ) {
       Expression rightHandSide = node.rightHandSide;
@@ -281,7 +330,7 @@
       // bound of the static types of the LHS and RHS.
       _analyzeLeastUpperBound(node, node.leftHandSide, node.rightHandSide,
           read: true);
-      return null;
+      return;
     } else if (operator == TokenType.AMPERSAND_AMPERSAND_EQ ||
         operator == TokenType.BAR_BAR_EQ) {
       _recordStaticType(node, _typeProvider.boolType);
@@ -295,7 +344,6 @@
           staticType);
       _recordStaticType(node, staticType);
     }
-    return null;
   }
 
   /**
@@ -305,7 +353,7 @@
    *   the static type of e.
    */
   @override
-  Object visitAwaitExpression(AwaitExpression node) {
+  void visitAwaitExpression(AwaitExpression node) {
     // Await the Future. This results in whatever type is (ultimately) returned.
     DartType awaitType(DartType awaitedType) {
       if (awaitedType == null) {
@@ -318,7 +366,6 @@
     }
 
     _recordStaticType(node, awaitType(_getStaticType(node.expression)));
-    return null;
   }
 
   /**
@@ -359,14 +406,14 @@
    * <i>super.op(e<sub>2</sub>)</i>.</blockquote>
    */
   @override
-  Object visitBinaryExpression(BinaryExpression node) {
+  void visitBinaryExpression(BinaryExpression node) {
     if (node.operator.type == TokenType.QUESTION_QUESTION) {
       // Evaluation of an if-null expression e of the form e1 ?? e2 is
       // equivalent to the evaluation of the expression
       // ((x) => x == null ? e2 : x)(e1).  The static type of e is the least
       // upper bound of the static type of e1 and the static type of e2.
       _analyzeLeastUpperBound(node, node.leftOperand, node.rightOperand);
-      return null;
+      return;
     }
     DartType staticType = node.staticInvokeType?.returnType ?? _dynamicType;
     staticType = _typeSystem.refineBinaryExpressionType(
@@ -375,7 +422,6 @@
         node.rightOperand.staticType,
         staticType);
     _recordStaticType(node, staticType);
-    return null;
   }
 
   /**
@@ -383,9 +429,8 @@
    * bool.</blockquote>
    */
   @override
-  Object visitBooleanLiteral(BooleanLiteral node) {
+  void visitBooleanLiteral(BooleanLiteral node) {
     _recordStaticType(node, _typeProvider.boolType);
-    return null;
   }
 
   /**
@@ -394,9 +439,8 @@
    * t;}(e)</i>.</blockquote>
    */
   @override
-  Object visitCascadeExpression(CascadeExpression node) {
+  void visitCascadeExpression(CascadeExpression node) {
     _recordStaticType(node, _getStaticType(node.target));
-    return null;
   }
 
   /**
@@ -409,16 +453,14 @@
    * and the static type of <i>e<sub>3</sub></i>.</blockquote>
    */
   @override
-  Object visitConditionalExpression(ConditionalExpression node) {
+  void visitConditionalExpression(ConditionalExpression node) {
     _analyzeLeastUpperBound(node, node.thenExpression, node.elseExpression);
-    return null;
   }
 
   @override
-  Object visitDeclaredIdentifier(DeclaredIdentifier node) {
+  void visitDeclaredIdentifier(DeclaredIdentifier node) {
     super.visitDeclaredIdentifier(node);
     _inferForEachLoopVariableType(node);
-    return null;
   }
 
   /**
@@ -426,13 +468,12 @@
    * double.</blockquote>
    */
   @override
-  Object visitDoubleLiteral(DoubleLiteral node) {
+  void visitDoubleLiteral(DoubleLiteral node) {
     _recordStaticType(node, _typeProvider.doubleType);
-    return null;
   }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     FunctionExpression function = node.functionExpression;
     ExecutableElementImpl functionElement =
         node.declaredElement as ExecutableElementImpl;
@@ -441,13 +482,12 @@
       // we only need to handle local functions.
       if (node.returnType == null) {
         _inferLocalFunctionReturnType(node.functionExpression);
-        return null;
+        return;
       }
       functionElement.returnType =
           _computeStaticReturnTypeOfFunctionDeclaration(node);
     }
     _recordStaticType(function, functionElement.type);
-    return null;
   }
 
   /**
@@ -481,14 +521,13 @@
    * specified as dynamic.</blockquote>
    */
   @override
-  Object visitFunctionExpression(FunctionExpression node) {
+  void visitFunctionExpression(FunctionExpression node) {
     if (node.parent is FunctionDeclaration) {
       // The function type will be resolved and set when we visit the parent
       // node.
-      return null;
+      return;
     }
     _inferLocalFunctionReturnType(node);
-    return null;
   }
 
   /**
@@ -504,11 +543,10 @@
    * static type of <i>i</i> is the declared return type of <i>F</i>.</blockquote>
    */
   @override
-  Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
+  void visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     _inferGenericInvocationExpression(node);
     DartType staticType = _computeInvokeReturnType(node.staticInvokeType);
     _recordStaticType(node, staticType);
-    return null;
   }
 
   /**
@@ -517,7 +555,7 @@
    * <i>[]</i> on <i>e<sub>1</sub></i> with argument <i>e<sub>2</sub></i>.</blockquote>
    */
   @override
-  Object visitIndexExpression(IndexExpression node) {
+  void visitIndexExpression(IndexExpression node) {
     if (node.inSetterContext()) {
       ExecutableElement staticMethodElement = node.staticElement;
       DartType staticType = _computeArgumentType(staticMethodElement);
@@ -527,7 +565,6 @@
       DartType staticType = _computeStaticReturnType(staticMethodElement);
       _recordStaticType(node, staticType);
     }
-    return null;
   }
 
   /**
@@ -540,11 +577,9 @@
    * form <i>const T(a<sub>1</sub>, &hellip;, a<sub>n</sub>)</i> is <i>T</i>. </blockquote>
    */
   @override
-  Object visitInstanceCreationExpression(InstanceCreationExpression node) {
+  void visitInstanceCreationExpression(InstanceCreationExpression node) {
     _inferInstanceCreationExpression(node);
-
     _recordStaticType(node, node.constructorName.type.type);
-    return null;
   }
 
   /**
@@ -565,7 +600,7 @@
    * </blockquote>
    */
   @override
-  Object visitIntegerLiteral(IntegerLiteral node) {
+  void visitIntegerLiteral(IntegerLiteral node) {
     // Check the parent context for negated integer literals.
     var context = InferenceContext.getContext(
         (node as IntegerLiteralImpl).immediatelyNegated ? node.parent : node);
@@ -576,7 +611,6 @@
     } else {
       _recordStaticType(node, _typeProvider.doubleType);
     }
-    return null;
   }
 
   /**
@@ -586,9 +620,8 @@
    * The static type of an is-expression is `bool`.</blockquote>
    */
   @override
-  Object visitIsExpression(IsExpression node) {
+  void visitIsExpression(IsExpression node) {
     _recordStaticType(node, _typeProvider.boolType);
-    return null;
   }
 
   /**
@@ -600,7 +633,7 @@
    * .</blockquote>
    */
   @override
-  Object visitListLiteral(ListLiteral node) {
+  void visitListLiteral(ListLiteral node) {
     TypeArgumentList typeArguments = node.typeArguments;
 
     // If we have explicit arguments, use them
@@ -615,7 +648,7 @@
       }
       _recordStaticType(
           node, _typeProvider.listType.instantiate(<DartType>[staticType]));
-      return null;
+      return;
     }
 
     DartType listDynamicType =
@@ -631,12 +664,11 @@
       // everything was successful?
       _resolver.inferenceContext.recordInference(node, inferred);
       _recordStaticType(node, inferred);
-      return null;
+      return;
     }
 
     // If we have no type arguments and couldn't infer any, use dynamic.
     _recordStaticType(node, listDynamicType);
-    return null;
   }
 
   /**
@@ -652,12 +684,9 @@
    * <i>String</i>.</blockquote>
    */
   @override
-  Object visitMapLiteral(MapLiteral node) {
+  void visitMapLiteral(MapLiteral node) {
     TypeArgumentList typeArguments = node.typeArguments;
 
-    DartType mapDynamicType = _typeProvider.mapType
-        .instantiate(<DartType>[_dynamicType, _dynamicType]);
-
     // If we have type arguments, use them
     if (typeArguments != null) {
       DartType staticKeyType = _dynamicType;
@@ -677,9 +706,12 @@
           node,
           _typeProvider.mapType
               .instantiate(<DartType>[staticKeyType, staticValueType]));
-      return null;
+      return;
     }
 
+    DartType mapDynamicType = _typeProvider.mapType
+        .instantiate(<DartType>[_dynamicType, _dynamicType]);
+
     // If we have no explicit type arguments, try to infer type arguments.
     ParameterizedType inferred = inferMapType(node);
 
@@ -690,12 +722,11 @@
       // everything was successful?
       _resolver.inferenceContext.recordInference(node, inferred);
       _recordStaticType(node, inferred);
-      return null;
+      return;
     }
 
     // If no type arguments and no inference, use dynamic
     _recordStaticType(node, mapDynamicType);
-    return null;
   }
 
   /**
@@ -735,7 +766,7 @@
    * <i>F</i>.</blockquote>
    */
   @override
-  Object visitMethodInvocation(MethodInvocation node) {
+  void visitMethodInvocation(MethodInvocation node) {
     _inferGenericInvocationExpression(node);
     // Record static return type of the static element.
     bool inferredStaticType = _inferMethodInvocationObject(node) ||
@@ -746,14 +777,12 @@
           _computeInvokeReturnType(node.staticInvokeType);
       _recordStaticType(node, staticStaticType);
     }
-    return null;
   }
 
   @override
-  Object visitNamedExpression(NamedExpression node) {
+  void visitNamedExpression(NamedExpression node) {
     Expression expression = node.expression;
     _recordStaticType(node, _getStaticType(expression));
-    return null;
   }
 
   /**
@@ -761,16 +790,14 @@
    * </blockquote>
    */
   @override
-  Object visitNullLiteral(NullLiteral node) {
+  void visitNullLiteral(NullLiteral node) {
     _recordStaticType(node, _typeProvider.nullType);
-    return null;
   }
 
   @override
-  Object visitParenthesizedExpression(ParenthesizedExpression node) {
+  void visitParenthesizedExpression(ParenthesizedExpression node) {
     Expression expression = node.expression;
     _recordStaticType(node, _getStaticType(expression));
-    return null;
   }
 
   /**
@@ -800,7 +827,7 @@
    * = r - 1; return r}(e1, e2)</i></blockquote>
    */
   @override
-  Object visitPostfixExpression(PostfixExpression node) {
+  void visitPostfixExpression(PostfixExpression node) {
     Expression operand = node.operand;
     DartType staticType = _getStaticType(operand, read: true);
     TokenType operator = node.operator.type;
@@ -811,14 +838,13 @@
       }
     }
     _recordStaticType(node, staticType);
-    return null;
   }
 
   /**
    * See [visitSimpleIdentifier].
    */
   @override
-  Object visitPrefixedIdentifier(PrefixedIdentifier node) {
+  void visitPrefixedIdentifier(PrefixedIdentifier node) {
     SimpleIdentifier prefixedIdentifier = node.identifier;
     Element staticElement = prefixedIdentifier.staticElement;
     DartType staticType = _dynamicType;
@@ -850,7 +876,6 @@
       _recordStaticType(prefixedIdentifier, staticType);
       _recordStaticType(node, staticType);
     }
-    return null;
   }
 
   /**
@@ -859,7 +884,7 @@
    * form <i>op super</i> is equivalent to the method invocation <i>super.op()<i>.</blockquote>
    */
   @override
-  Object visitPrefixExpression(PrefixExpression node) {
+  void visitPrefixExpression(PrefixExpression node) {
     TokenType operator = node.operator.type;
     if (operator == TokenType.BANG) {
       _recordStaticType(node, _typeProvider.boolType);
@@ -876,7 +901,6 @@
       }
       _recordStaticType(node, staticType);
     }
-    return null;
   }
 
   /**
@@ -921,7 +945,7 @@
    * The static type of <i>i</i> is the declared return type of <i>m</i>.</blockquote>
    */
   @override
-  Object visitPropertyAccess(PropertyAccess node) {
+  void visitPropertyAccess(PropertyAccess node) {
     SimpleIdentifier propertyName = node.propertyName;
     Element staticElement = propertyName.staticElement;
     DartType staticType = _dynamicType;
@@ -937,7 +961,6 @@
       _recordStaticType(propertyName, staticType);
       _recordStaticType(node, staticType);
     }
-    return null;
   }
 
   /**
@@ -945,9 +968,47 @@
    * bottom.</blockquote>
    */
   @override
-  Object visitRethrowExpression(RethrowExpression node) {
+  void visitRethrowExpression(RethrowExpression node) {
     _recordStaticType(node, _typeProvider.bottomType);
-    return null;
+  }
+
+  @override
+  void visitSetLiteral(SetLiteral node) {
+    TypeArgumentList typeArguments = node.typeArguments;
+
+    // If we have type arguments, use them
+    if (typeArguments != null) {
+      DartType elementType = _dynamicType;
+      NodeList<TypeAnnotation> arguments = typeArguments.arguments;
+      if (arguments != null && arguments.length == 1) {
+        DartType type = _getType(arguments[0]);
+        if (type != null) {
+          elementType = type;
+        }
+      }
+      _recordStaticType(
+          node, _typeProvider.setType.instantiate(<DartType>[elementType]));
+      return;
+    }
+
+    DartType setDynamicType =
+        _typeProvider.setType.instantiate(<DartType>[_dynamicType]);
+
+    // If we have no explicit type arguments, try to infer type arguments.
+    ParameterizedType inferred = inferSetType(node);
+
+    if (inferred != setDynamicType) {
+      // TODO(jmesserly): this results in an "inferred" message even when we
+      // in fact had an error above, because it will still attempt to return
+      // a type. Perhaps we should record inference from TypeSystem if
+      // everything was successful?
+      _resolver.inferenceContext.recordInference(node, inferred);
+      _recordStaticType(node, inferred);
+      return;
+    }
+
+    // If no type arguments and no inference, use dynamic
+    _recordStaticType(node, setDynamicType);
   }
 
   /**
@@ -989,7 +1050,7 @@
    * </blockquote>
    */
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     Element element = node.staticElement;
     DartType staticType = _dynamicType;
     if (element is ClassElement) {
@@ -1019,7 +1080,7 @@
       var parent = node.parent;
       if (parent is PrefixedIdentifier && parent.prefix == node ||
           parent is MethodInvocation && parent.target == node) {
-        return null;
+        return;
       }
       staticType = _typeProvider.dynamicType;
     } else if (element is DynamicElementImpl) {
@@ -1029,7 +1090,6 @@
     }
     staticType = _inferGenericInstantiationFromContext(node, staticType);
     _recordStaticType(node, staticType);
-    return null;
   }
 
   /**
@@ -1037,9 +1097,8 @@
    * `String`.</blockquote>
    */
   @override
-  Object visitSimpleStringLiteral(SimpleStringLiteral node) {
+  void visitSimpleStringLiteral(SimpleStringLiteral node) {
     _recordStaticType(node, _typeProvider.stringType);
-    return null;
   }
 
   /**
@@ -1047,13 +1106,12 @@
    * `String`.</blockquote>
    */
   @override
-  Object visitStringInterpolation(StringInterpolation node) {
+  void visitStringInterpolation(StringInterpolation node) {
     _recordStaticType(node, _typeProvider.stringType);
-    return null;
   }
 
   @override
-  Object visitSuperExpression(SuperExpression node) {
+  void visitSuperExpression(SuperExpression node) {
     if (thisType == null) {
       // TODO(brianwilkerson) Report this error if it hasn't already been
       // reported.
@@ -1061,13 +1119,11 @@
     } else {
       _recordStaticType(node, thisType);
     }
-    return null;
   }
 
   @override
-  Object visitSymbolLiteral(SymbolLiteral node) {
+  void visitSymbolLiteral(SymbolLiteral node) {
     _recordStaticType(node, _typeProvider.symbolType);
-    return null;
   }
 
   /**
@@ -1075,7 +1131,7 @@
    * interface of the immediately enclosing class.</blockquote>
    */
   @override
-  Object visitThisExpression(ThisExpression node) {
+  void visitThisExpression(ThisExpression node) {
     if (thisType == null) {
       // TODO(brianwilkerson) Report this error if it hasn't already been
       // reported.
@@ -1083,7 +1139,6 @@
     } else {
       _recordStaticType(node, thisType);
     }
-    return null;
   }
 
   /**
@@ -1091,13 +1146,12 @@
    * bottom.</blockquote>
    */
   @override
-  Object visitThrowExpression(ThrowExpression node) {
+  void visitThrowExpression(ThrowExpression node) {
     _recordStaticType(node, _typeProvider.bottomType);
-    return null;
   }
 
   @override
-  Object visitVariableDeclaration(VariableDeclaration node) {
+  void visitVariableDeclaration(VariableDeclaration node) {
     Expression initializer = node.initializer;
     _inferLocalVariableType(node, initializer);
     if (initializer != null) {
@@ -1108,7 +1162,6 @@
         _resolver.overrideVariable(element, rightType, true);
       }
     }
-    return null;
   }
 
   /**
diff --git a/pkg/analyzer/lib/src/generated/testing/ast_test_factory.dart b/pkg/analyzer/lib/src/generated/testing/ast_test_factory.dart
index 8dcf359..7da4bb2 100644
--- a/pkg/analyzer/lib/src/generated/testing/ast_test_factory.dart
+++ b/pkg/analyzer/lib/src/generated/testing/ast_test_factory.dart
@@ -1066,6 +1066,15 @@
   static ScriptTag scriptTag(String scriptTag) =>
       astFactory.scriptTag(TokenFactory.tokenFromString(scriptTag));
 
+  static SetLiteral setLiteral(Keyword keyword, TypeArgumentList typeArguments,
+          List<Expression> elements) =>
+      astFactory.setLiteral(
+          keyword == null ? null : TokenFactory.tokenFromKeyword(keyword),
+          typeArguments,
+          TokenFactory.tokenFromType(TokenType.OPEN_CURLY_BRACKET),
+          elements,
+          TokenFactory.tokenFromType(TokenType.CLOSE_CURLY_BRACKET));
+
   static ShowCombinator showCombinator(List<SimpleIdentifier> identifiers) =>
       astFactory.showCombinator(
           TokenFactory.tokenFromString("show"), identifiers);
diff --git a/pkg/analyzer/lib/src/generated/testing/element_factory.dart b/pkg/analyzer/lib/src/generated/testing/element_factory.dart
index 27a7460..8dfa63d 100644
--- a/pkg/analyzer/lib/src/generated/testing/element_factory.dart
+++ b/pkg/analyzer/lib/src/generated/testing/element_factory.dart
@@ -416,8 +416,8 @@
       AnalysisContext context, String libraryName) {
     String fileName = "/$libraryName.dart";
     CompilationUnitElementImpl unit = compilationUnit(fileName);
-    LibraryElementImpl library =
-        new LibraryElementImpl(context, libraryName, 0, libraryName.length);
+    LibraryElementImpl library = new LibraryElementImpl(
+        context, null, libraryName, 0, libraryName.length);
     library.definingCompilationUnit = unit;
     return library;
   }
diff --git a/pkg/analyzer/lib/src/generated/testing/test_type_provider.dart b/pkg/analyzer/lib/src/generated/testing/test_type_provider.dart
index 17afba9..1f4cc10 100644
--- a/pkg/analyzer/lib/src/generated/testing/test_type_provider.dart
+++ b/pkg/analyzer/lib/src/generated/testing/test_type_provider.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -6,6 +6,7 @@
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
+import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/type.dart';
 import 'package:analyzer/src/generated/constant.dart';
@@ -108,6 +109,11 @@
   InterfaceType _mapType;
 
   /**
+   * The type representing the built-in type 'Map'.
+   */
+  InterfaceType _mapNullNullType;
+
+  /**
    * An shared object representing the value 'null'.
    */
   DartObjectImpl _nullObject;
@@ -128,6 +134,16 @@
   InterfaceType _objectType;
 
   /**
+   * The type representing the built-in type 'Set'.
+   */
+  InterfaceType _setType;
+
+  /**
+   * The type representing the built-in type 'Set'.
+   */
+  InterfaceType _setNullType;
+
+  /**
    * The type representing the built-in type 'StackTrace'.
    */
   InterfaceType _stackTraceType;
@@ -168,7 +184,13 @@
    */
   AnalysisContext _context;
 
-  TestTypeProvider([this._context]);
+  /**
+   * The analysis driver, if any. Used to create an appropriate 'dart:async'
+   * library to back `Future<T>`.
+   */
+  AnalysisDriver _driver;
+
+  TestTypeProvider([this._context, this._driver]);
 
   @override
   InterfaceType get boolType {
@@ -377,6 +399,14 @@
   }
 
   @override
+  InterfaceType get mapNullNullType {
+    if (_mapNullNullType == null) {
+      _mapNullNullType = mapType.instantiate(<DartType>[nullType, nullType]);
+    }
+    return _mapNullNullType;
+  }
+
+  @override
   InterfaceType get mapType {
     if (_mapType == null) {
       ClassElementImpl mapElement =
@@ -422,7 +452,7 @@
       // Create a library element for "dart:core"
       // This enables the "isDartCoreNull" getter.
       var library = new LibraryElementImpl.forNode(
-          _context, AstTestFactory.libraryIdentifier2(["dart.core"]));
+          _context, null, AstTestFactory.libraryIdentifier2(["dart.core"]));
       var unit = new CompilationUnitElementImpl();
       library.definingCompilationUnit = unit;
       unit.librarySource = unit.source = new StringSource('', null);
@@ -464,6 +494,23 @@
   }
 
   @override
+  InterfaceType get setNullType {
+    if (_setNullType == null) {
+      _setNullType = setType.instantiate(<DartType>[nullType]);
+    }
+    return _setNullType;
+  }
+
+  @override
+  InterfaceType get setType {
+    if (_setType == null) {
+      ClassElementImpl setElement = ElementFactory.classElement2("Set", ["E"]);
+      _setType = setElement.type;
+    }
+    return _setType;
+  }
+
+  @override
   InterfaceType get stackTraceType {
     if (_stackTraceType == null) {
       ClassElementImpl stackTraceElement =
@@ -558,11 +605,16 @@
   }
 
   void _initDartAsync() {
-    Source asyncSource = _context.sourceFactory.forUri(DartSdk.DART_ASYNC);
-    _context.setContents(asyncSource, "");
+    Source asyncSource;
+    if (_driver == null) {
+      asyncSource = _context.sourceFactory.forUri(DartSdk.DART_ASYNC);
+      _context.setContents(asyncSource, "");
+    } else {
+      asyncSource = _driver.sourceFactory.forUri(DartSdk.DART_ASYNC);
+    }
     CompilationUnitElementImpl asyncUnit = new CompilationUnitElementImpl();
     LibraryElementImpl asyncLibrary = new LibraryElementImpl.forNode(
-        _context, AstTestFactory.libraryIdentifier2(["dart.async"]));
+        _context, null, AstTestFactory.libraryIdentifier2(["dart.async"]));
     asyncLibrary.definingCompilationUnit = asyncUnit;
     asyncUnit.librarySource = asyncUnit.source = asyncSource;
 
diff --git a/pkg/analyzer/lib/src/generated/type_system.dart b/pkg/analyzer/lib/src/generated/type_system.dart
index beb1160..540a948 100644
--- a/pkg/analyzer/lib/src/generated/type_system.dart
+++ b/pkg/analyzer/lib/src/generated/type_system.dart
@@ -466,7 +466,8 @@
       List<DartType> tArgs2 = i2.typeArguments;
       assert(tArgs1.length == tArgs2.length);
       for (int i = 0; i < tArgs1.length; i++) {
-        if (!_matchSubtypeOf(tArgs1[i], tArgs2[i], visited, origin,
+        if (!_matchSubtypeOf(
+            tArgs1[i], tArgs2[i], new HashSet<Element>(), origin,
             covariant: covariant)) {
           return false;
         }
@@ -478,22 +479,12 @@
     }
 
     // Guard against loops in the class hierarchy
-    //
-    // TODO(jmesserly): this function isn't guarding against anything (it's not
-    // passsing down `visitedSet`, so adding the element has no effect).
-    //
-    // If that's fixed, it breaks inference tests for types like
-    // `Iterable<Iterable<?>>` matched aganinst `List<List<int>>`.
-    //
-    // The fix is for type arguments (above) to not pass down `visited`, similar
-    // to how _isInterfaceSubtypeOf does not pass down `visited` for type
-    // arguments.
     bool guardedInterfaceSubtype(InterfaceType t1) {
-      var visitedSet = visited ?? new HashSet<Element>();
-      if (visitedSet.add(t1.element)) {
+      visited ??= new HashSet<Element>();
+      if (visited.add(t1.element)) {
         bool matched = _matchInterfaceSubtypeOf(t1, i2, visited, origin,
             covariant: covariant);
-        visitedSet.remove(t1.element);
+        visited.remove(t1.element);
         return matched;
       } else {
         // In the case of a recursive type parameter, consider the subtype
@@ -729,13 +720,6 @@
   static bool _comparingTypeParameterBounds = false;
 
   /**
-   * True if declaration casts should be allowed, otherwise false.
-   *
-   * This affects the behavior of [isAssignableTo].
-   */
-  final bool declarationCasts;
-
-  /**
    * True if implicit casts should be allowed, otherwise false.
    *
    * This affects the behavior of [isAssignableTo].
@@ -744,8 +728,7 @@
 
   final TypeProvider typeProvider;
 
-  StrongTypeSystemImpl(this.typeProvider,
-      {this.declarationCasts: true, this.implicitCasts: true});
+  StrongTypeSystemImpl(this.typeProvider, {this.implicitCasts: true});
 
   @override
   bool get isStrong => true;
@@ -1048,8 +1031,7 @@
   }
 
   @override
-  bool isAssignableTo(DartType fromType, DartType toType,
-      {bool isDeclarationCast = false}) {
+  bool isAssignableTo(DartType fromType, DartType toType) {
     // An actual subtype
     if (isSubtypeOf(fromType, toType)) {
       return true;
@@ -1063,11 +1045,7 @@
       }
     }
 
-    if (isDeclarationCast) {
-      if (!declarationCasts) {
-        return false;
-      }
-    } else if (!implicitCasts) {
+    if (!implicitCasts) {
       return false;
     }
 
@@ -1819,8 +1797,7 @@
    * Return `true` if the [leftType] is assignable to the [rightType] (that is,
    * if leftType <==> rightType).
    */
-  bool isAssignableTo(DartType leftType, DartType rightType,
-      {bool isDeclarationCast = false});
+  bool isAssignableTo(DartType leftType, DartType rightType);
 
   /**
    * Return `true` if the [leftType] is more specific than the [rightType]
@@ -2096,7 +2073,6 @@
   static TypeSystem create(AnalysisContext context) {
     var options = context.analysisOptions as AnalysisOptionsImpl;
     return new StrongTypeSystemImpl(context.typeProvider,
-        declarationCasts: options.declarationCasts,
         implicitCasts: options.implicitCasts);
   }
 }
diff --git a/pkg/analyzer/lib/src/hint/sdk_constraint_extractor.dart b/pkg/analyzer/lib/src/hint/sdk_constraint_extractor.dart
index 9ff1b29..0cd3180 100644
--- a/pkg/analyzer/lib/src/hint/sdk_constraint_extractor.dart
+++ b/pkg/analyzer/lib/src/hint/sdk_constraint_extractor.dart
@@ -12,44 +12,84 @@
   /// The file from which the constraint is to be extracted.
   final File pubspecFile;
 
-  /// The version range that was
+  /// A flag indicating whether the [_constraintText], [_constraintOffset] and
+  /// [_constraint] have been initialized.
+  bool _initialized = false;
+
+  /// The text of the constraint, or `null` if the range has not yet been
+  /// computed or if there was an error when attempting to compute the range.
+  String _constraintText;
+
+  /// The offset of the constraint text, or `-1` if the offset is not known.
+  int _constraintOffset = -1;
+
+  /// The cached range of supported versions, or `null` if the range has not yet
+  /// been computed or if there was an error when attempting to compute the
+  /// range.
   VersionConstraint _constraint;
 
   /// Initialize a newly created extractor to extract the SDK version constraint
   /// from the given `pubspec.yaml` file.
   SdkConstraintExtractor(this.pubspecFile);
 
-  /// Return the range of supported versions.
+  /// Return the range of supported versions, or `null` if the range could not
+  /// be computed.
   VersionConstraint constraint() {
     if (_constraint == null) {
-      try {
-        String constraintText = _getConstraintText();
-        if (constraintText != null) {
-          _constraint = new VersionConstraint.parse(constraintText);
+      String text = constraintText();
+      if (text != null) {
+        try {
+          _constraint = new VersionConstraint.parse(text);
+        } catch (e) {
+          // Ignore this, leaving [_constraint] unset.
         }
-      } catch (e) {
-        // Return `null` by falling through without setting `_versionRange`.
       }
     }
     return _constraint;
   }
 
+  /// Return the offset of the constraint text.
+  int constraintOffset() {
+    if (_constraintText == null) {
+      _initializeTextAndOffset();
+    }
+    return _constraintOffset;
+  }
+
   /// Return the constraint text following "sdk:".
-  String _getConstraintText() {
-    String fileContent = pubspecFile.readAsStringSync();
-    YamlDocument document = loadYamlDocument(fileContent);
-    YamlNode contents = document.contents;
-    if (contents is YamlMap) {
-      var environment = contents['environment'];
-      if (environment is YamlMap) {
-        var sdk = environment['sdk'];
-        if (sdk is String) {
-          return sdk;
-        } else if (sdk is YamlScalar) {
-          return sdk.toString();
+  String constraintText() {
+    if (_constraintText == null) {
+      _initializeTextAndOffset();
+    }
+    return _constraintText;
+  }
+
+  /// Initialize both [_constraintText] and [_constraintOffset], or neither if
+  /// there is an error or if the pubspec does not contain an sdk constraint.
+  void _initializeTextAndOffset() {
+    if (!_initialized) {
+      _initialized = true;
+      try {
+        String fileContent = pubspecFile.readAsStringSync();
+        YamlDocument document = loadYamlDocument(fileContent);
+        YamlNode contents = document.contents;
+        if (contents is YamlMap) {
+          YamlNode environment = contents.nodes['environment'];
+          if (environment is YamlMap) {
+            YamlNode sdk = environment.nodes['sdk'];
+            if (sdk is YamlScalar) {
+              _constraintText = sdk.value;
+              _constraintOffset = sdk.span.start.offset;
+              if (sdk.style == ScalarStyle.SINGLE_QUOTED ||
+                  sdk.style == ScalarStyle.DOUBLE_QUOTED) {
+                _constraintOffset++;
+              }
+            }
+          }
         }
+      } catch (e) {
+        // Ignore this, leaving both fields unset.
       }
     }
-    return null;
   }
 }
diff --git a/pkg/analyzer/lib/src/hint/sdk_constraint_verifier.dart b/pkg/analyzer/lib/src/hint/sdk_constraint_verifier.dart
index 3636897..429883f 100644
--- a/pkg/analyzer/lib/src/hint/sdk_constraint_verifier.dart
+++ b/pkg/analyzer/lib/src/hint/sdk_constraint_verifier.dart
@@ -44,6 +44,16 @@
       _checkFutureAndStream ??= !before_2_1_0.intersect(_versionRange).isEmpty;
 
   @override
+  void visitHideCombinator(HideCombinator node) {
+    // Don't flag references to either `Future` or `Stream` within a combinator.
+  }
+
+  @override
+  void visitShowCombinator(ShowCombinator node) {
+    // Don't flag references to either `Future` or `Stream` within a combinator.
+  }
+
+  @override
   void visitSimpleIdentifier(SimpleIdentifier node) {
     if (node.inDeclarationContext()) {
       return;
diff --git a/pkg/analyzer/lib/src/lint/analysis.dart b/pkg/analyzer/lib/src/lint/analysis.dart
index bc4e089..be9fa8e 100644
--- a/pkg/analyzer/lib/src/lint/analysis.dart
+++ b/pkg/analyzer/lib/src/lint/analysis.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -6,12 +6,15 @@
 import 'dart:collection';
 import 'dart:io' as io;
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/file_system/file_system.dart'
     show File, Folder, ResourceProvider, ResourceUriResolver;
 import 'package:analyzer/file_system/physical_file_system.dart';
 import 'package:analyzer/src/context/builder.dart';
+import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
+import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:analyzer/src/dart/sdk/sdk.dart';
 import 'package:analyzer/src/file_system/file_system.dart';
 import 'package:analyzer/src/generated/engine.dart' hide AnalysisResult;
@@ -25,8 +28,6 @@
 import 'package:analyzer/src/services/lint.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
 import 'package:analyzer/src/util/sdk.dart';
-import 'package:analyzer/src/dart/analysis/byte_store.dart';
-import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:package_config/packages.dart' show Packages;
 import 'package:package_config/packages_file.dart' as pkgfile show parse;
 import 'package:package_config/src/packages_impl.dart' show MapPackages;
@@ -49,7 +50,6 @@
 AnalysisOptions _buildAnalyzerOptions(LinterOptions options) {
   AnalysisOptionsImpl analysisOptions = new AnalysisOptionsImpl();
   analysisOptions.hint = false;
-  analysisOptions.previewDart2 = options.previewDart2;
   analysisOptions.lint = options.enableLints;
   analysisOptions.generateSdkErrors = options.showSdkWarnings;
   analysisOptions.enableTiming = options.enableTiming;
@@ -83,9 +83,6 @@
   /// Whether to use Dart's Strong Mode analyzer.
   bool strongMode = true;
 
-  /// Whether to use Dart 2.0 features.
-  bool previewDart2 = false;
-
   /// The mock SDK (to speed up testing) or `null` to use the actual SDK.
   DartSdk mockSdk;
 
@@ -100,6 +97,13 @@
   void set enableAssertInitializer(bool enable) {
     // Ignored because the option is now always enabled.
   }
+
+  /// Whether to use Dart 2.0 features.
+  @deprecated
+  bool get previewDart2 => true;
+
+  @deprecated
+  void set previewDart2(bool value) {}
 }
 
 class LintDriver {
diff --git a/pkg/analyzer/lib/src/lint/linter.dart b/pkg/analyzer/lib/src/lint/linter.dart
index 1732ba7..348322f 100644
--- a/pkg/analyzer/lib/src/lint/linter.dart
+++ b/pkg/analyzer/lib/src/lint/linter.dart
@@ -1,14 +1,20 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:async';
 import 'dart:io';
 
-import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/dart/analysis/declared_variables.dart';
+import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
+import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/error/error.dart';
+import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/file_system/file_system.dart' as file_system;
+import 'package:analyzer/src/dart/ast/ast.dart';
+import 'package:analyzer/src/dart/ast/token.dart';
+import 'package:analyzer/src/dart/error/lint_codes.dart';
 import 'package:analyzer/src/generated/engine.dart'
     show AnalysisErrorInfo, AnalysisErrorInfoImpl, Logger;
 import 'package:analyzer/src/generated/java_engine.dart' show CaughtException;
@@ -200,6 +206,16 @@
   TypeProvider get typeProvider;
 
   TypeSystem get typeSystem;
+
+  /// Return `true` if it would be valid for the given instance creation
+  /// [expression] to have a keyword of `const`.
+  ///
+  /// The [expression] is expected to be a node within one of the compilation
+  /// units in [allUnits].
+  ///
+  /// Note that this method can cause constant evaluation to occur, which can be
+  /// computationally expensive.
+  bool canBeConst(InstanceCreationExpression expression);
 }
 
 /// Implementation of [LinterContext]
@@ -221,6 +237,34 @@
 
   LinterContextImpl(this.allUnits, this.currentUnit, this.declaredVariables,
       this.typeProvider, this.typeSystem);
+
+  @override
+  bool canBeConst(InstanceCreationExpression expression) {
+    //
+    // Verify that the invoked constructor is a const constructor.
+    //
+    ConstructorElement element = expression.staticElement;
+    if (element == null || !element.isConst) {
+      return false;
+    }
+    //
+    // Verify that the evaluation of the constructor would not produce an
+    // exception.
+    //
+    Token oldKeyword = expression.keyword;
+    ConstantAnalysisErrorListener listener =
+        new ConstantAnalysisErrorListener();
+    try {
+      expression.keyword = new KeywordToken(Keyword.CONST, expression.offset);
+      LibraryElement library = element.library;
+      ErrorReporter errorReporter = new ErrorReporter(listener, element.source);
+      expression.accept(new ConstantVerifier(
+          errorReporter, library, typeProvider, declaredVariables));
+    } finally {
+      expression.keyword = oldKeyword;
+    }
+    return !listener.hasConstError;
+  }
 }
 
 class LinterContextUnit {
@@ -319,15 +363,21 @@
   @override
   AstVisitor getVisitor() => null;
 
-  void reportLint(AstNode node, {bool ignoreSyntheticNodes: true}) {
+  void reportLint(AstNode node,
+      {List<Object> arguments: const [],
+      ErrorCode errorCode,
+      bool ignoreSyntheticNodes: true}) {
     if (node != null && (!node.isSynthetic || !ignoreSyntheticNodes)) {
-      reporter.reportErrorForNode(lintCode, node, []);
+      reporter.reportErrorForNode(lintCode, node, arguments);
     }
   }
 
-  void reportLintForToken(Token token, {bool ignoreSyntheticTokens: true}) {
+  void reportLintForToken(Token token,
+      {List<Object> arguments: const [],
+      ErrorCode errorCode,
+      bool ignoreSyntheticTokens: true}) {
     if (token != null && (!token.isSynthetic || !ignoreSyntheticTokens)) {
-      reporter.reportErrorForToken(lintCode, token, []);
+      reporter.reportErrorForToken(lintCode, token, arguments);
     }
   }
 
@@ -380,27 +430,19 @@
   /// This method is invoked to let the [LintRule] register node processors
   /// in the given [registry].
   ///
-  /// In a future release of the analyzer, a `context` argument will be added.
-  /// To opt into the new API, use [NodeLintRuleWithContext] instead.
-  void registerNodeProcessors(NodeLintRegistry registry);
+  /// The node processors may use the provided [context] to access information
+  /// that is not available from the AST nodes or their associated elements.
+  void registerNodeProcessors(NodeLintRegistry registry, LinterContext context);
 }
 
 /// [LintRule]s that implement this interface want to process only some types
 /// of AST nodes, and will register their processors in the registry.
 ///
-/// TODO(paulberry): once NodeLintRule is removed, rename this interface to
-/// NodeLintRule.
-abstract class NodeLintRuleWithContext extends NodeLintRule {
-  /// This method is invoked to let the [LintRule] register node processors
-  /// in the given [registry].
-  ///
-  /// The node processors may use the provided [context] to access information
-  /// that is not available from the AST nodes or their associated elements.
-  /// In a future release of the analyzer, [context] will become a required
-  /// parameter.
-  void registerNodeProcessors(NodeLintRegistry registry,
-      [LinterContext context]);
-}
+/// This class exists solely to allow a smoother transition from analyzer
+/// version 0.33.*.  It will be removed in a future analyzer release, so please
+/// use [NodeLintRule] instead.
+@deprecated
+abstract class NodeLintRuleWithContext extends NodeLintRule {}
 
 class PrintingReporter implements Reporter, Logger {
   final Printer _print;
diff --git a/pkg/analyzer/lib/src/lint/options_rule_validator.dart b/pkg/analyzer/lib/src/lint/options_rule_validator.dart
index 2d6911a..0858037 100644
--- a/pkg/analyzer/lib/src/lint/options_rule_validator.dart
+++ b/pkg/analyzer/lib/src/lint/options_rule_validator.dart
@@ -2,13 +2,26 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/error/error.dart';
+import 'package:analyzer/error/listener.dart';
+import 'package:analyzer/src/analysis_options/error/option_codes.dart';
+import 'package:analyzer/src/lint/linter.dart';
 import 'package:analyzer/src/lint/registry.dart';
 import 'package:analyzer/src/plugin/options.dart';
 import 'package:analyzer/src/util/yaml.dart';
 import 'package:yaml/yaml.dart';
 
 /**
+ * A hint code indicating reference to a deprecated lint.
+ *
+ * Parameters:
+ * 0: the rule name
+ */
+const AnalysisOptionsHintCode DEPRECATED_LINT_HINT =
+    const AnalysisOptionsHintCode('DEPRECATED_LINT_HINT',
+        "'{0}' is a deprecated lint rule and should not be used");
+
+/**
  * An error code indicating an undefined lint rule.
  *
  * Parameters:
@@ -19,12 +32,22 @@
         'UNDEFINED_LINT_WARNING', "'{0}' is not a recognized lint rule");
 
 /**
+ * Rule provider.
+ */
+typedef LintRuleProvider = Iterable<LintRule> Function();
+
+/**
  * Validates `linter` rule configurations.
  */
 class LinterRuleOptionsValidator extends OptionsValidator {
   static const linter = 'linter';
   static const rulesKey = 'rules';
 
+  final LintRuleProvider ruleProvider;
+
+  LinterRuleOptionsValidator({LintRuleProvider provider})
+      : ruleProvider = provider ?? (() => Registry.ruleRegistry.rules);
+
   @override
   List<AnalysisError> validate(ErrorReporter reporter, YamlMap options) {
     List<AnalysisError> errors = <AnalysisError>[];
@@ -38,15 +61,22 @@
 
   validateRules(YamlNode rules, ErrorReporter reporter) {
     if (rules is YamlList) {
-      List<String> registeredLints =
-          Registry.ruleRegistry.map((r) => r.name).toList();
       rules.nodes.forEach((YamlNode ruleNode) {
         Object value = ruleNode.value;
-        if (value != null && !registeredLints.contains(value)) {
-          reporter.reportErrorForSpan(
-              UNDEFINED_LINT_WARNING, ruleNode.span, [value]);
+        if (value != null) {
+          LintRule rule = getRegisteredLint(value);
+          if (rule == null) {
+            reporter.reportErrorForSpan(
+                UNDEFINED_LINT_WARNING, ruleNode.span, [value]);
+          } else if (rule.maturity == Maturity.deprecated) {
+            reporter.reportErrorForSpan(
+                DEPRECATED_LINT_HINT, ruleNode.span, [value]);
+          }
         }
       });
     }
   }
+
+  LintRule getRegisteredLint(Object value) => ruleProvider()
+      .firstWhere((rule) => rule.name == value, orElse: () => null);
 }
diff --git a/pkg/analyzer/lib/src/lint/project.dart b/pkg/analyzer/lib/src/lint/project.dart
index f87c70f..7243747 100644
--- a/pkg/analyzer/lib/src/lint/project.dart
+++ b/pkg/analyzer/lib/src/lint/project.dart
@@ -5,6 +5,7 @@
 import 'dart:async';
 import 'dart:io';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/generated/resolver.dart';
@@ -135,7 +136,7 @@
     for (Source source in sources) {
       String path = source.uri.path;
       if (path.startsWith(libDir) && !path.startsWith(libSrcDir)) {
-        AnalysisResult result = await driver.getResult(source.fullName);
+        ResolvedUnitResult result = await driver.getResult(source.fullName);
         LibraryElement library = result.libraryElement;
 
         NamespaceBuilder namespaceBuilder = new NamespaceBuilder();
diff --git a/pkg/analyzer/lib/src/lint/pub.dart b/pkg/analyzer/lib/src/lint/pub.dart
index 1db39bf..8e6deed 100644
--- a/pkg/analyzer/lib/src/lint/pub.dart
+++ b/pkg/analyzer/lib/src/lint/pub.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -81,8 +81,7 @@
   PSEntry get version;
 }
 
-abstract class PSDependencyList extends Object
-    with IterableMixin<PSDependency> {}
+abstract class PSDependencyList with IterableMixin<PSDependency> {}
 
 class PSEntry {
   final PSNode key;
@@ -110,7 +109,7 @@
   String get text;
 }
 
-abstract class PSNodeList extends Object with IterableMixin<PSNode> {
+abstract class PSNodeList with IterableMixin<PSNode> {
   @override
   Iterator<PSNode> get iterator;
   PSNode get token;
@@ -137,8 +136,8 @@
   T visitPackageAuthors(PSNodeList authors) => null;
   T visitPackageDependencies(PSDependencyList dependencies) => null;
   T visitPackageDependency(PSDependency dependency) => null;
-  T visitPackageDependencyOverrides(PSDependencyList dependencies) => null;
   T visitPackageDependencyOverride(PSDependency dependency) => null;
+  T visitPackageDependencyOverrides(PSDependencyList dependencies) => null;
   T visitPackageDescription(PSEntry description) => null;
   T visitPackageDevDependencies(PSDependencyList dependencies) => null;
   T visitPackageDevDependency(PSDependency dependency) => null;
diff --git a/pkg/analyzer/lib/src/lint/registry.dart b/pkg/analyzer/lib/src/lint/registry.dart
index 24b5e47..4e02ac7 100644
--- a/pkg/analyzer/lib/src/lint/registry.dart
+++ b/pkg/analyzer/lib/src/lint/registry.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -10,7 +10,7 @@
 /**
  * Registry of lint rules.
  */
-class Registry extends Object with IterableMixin<LintRule> {
+class Registry with IterableMixin<LintRule> {
   /**
    * The default registry to be used by clients.
    */
diff --git a/pkg/analyzer/lib/src/lint/util.dart b/pkg/analyzer/lib/src/lint/util.dart
index 39248bc..2e12794 100644
--- a/pkg/analyzer/lib/src/lint/util.dart
+++ b/pkg/analyzer/lib/src/lint/util.dart
@@ -1,17 +1,20 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:io';
 
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
+import 'package:analyzer/dart/ast/visitor.dart';
+import 'package:analyzer/error/error.dart';
+import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/src/dart/ast/token.dart';
 import 'package:analyzer/src/dart/scanner/reader.dart';
 import 'package:analyzer/src/dart/scanner/scanner.dart';
 import 'package:analyzer/src/generated/parser.dart' show Parser;
 import 'package:analyzer/src/string_source.dart' show StringSource;
-import 'package:path/path.dart' as p;
+import 'package:path/path.dart' as path;
 
 final _identifier = new RegExp(r'^([(_|$)a-zA-Z]+([_a-zA-Z0-9])*)$');
 
@@ -32,21 +35,21 @@
 String createLibraryNamePrefix(
     {String libraryPath, String projectRoot, String packageName}) {
   // Use the posix context to canonicalize separators (`\`).
-  var libraryDirectory = p.posix.dirname(libraryPath);
-  var path = p.posix.relative(libraryDirectory, from: projectRoot);
+  var libraryDirectory = path.posix.dirname(libraryPath);
+  var relativePath = path.posix.relative(libraryDirectory, from: projectRoot);
   // Drop 'lib/'.
-  var segments = p.split(path);
+  var segments = path.split(relativePath);
   if (segments[0] == 'lib') {
-    path = p.posix.joinAll(segments.sublist(1));
+    relativePath = path.posix.joinAll(segments.sublist(1));
   }
   // Replace separators.
-  path = path.replaceAll('/', '.');
+  relativePath = relativePath.replaceAll('/', '.');
   // Add separator if needed.
-  if (path.isNotEmpty) {
-    path = '.$path';
+  if (relativePath.isNotEmpty) {
+    relativePath = '.$relativePath';
   }
 
-  return '$packageName$path';
+  return '$packageName$relativePath';
 }
 
 /// Returns `true` if this [fileName] is a Dart file.
diff --git a/pkg/analyzer/lib/src/summary/expr_builder.dart b/pkg/analyzer/lib/src/summary/expr_builder.dart
index 66112ea..77d31cd 100644
--- a/pkg/analyzer/lib/src/summary/expr_builder.dart
+++ b/pkg/analyzer/lib/src/summary/expr_builder.dart
@@ -48,239 +48,245 @@
     if (requireValidConst && !uc.isValidConst) {
       return null;
     }
-    try {
-      for (UnlinkedExprOperation operation in uc.operations) {
-        switch (operation) {
-          case UnlinkedExprOperation.pushNull:
-            _push(AstTestFactory.nullLiteral());
-            break;
-          // bool
-          case UnlinkedExprOperation.pushFalse:
-            _push(AstTestFactory.booleanLiteral(false));
-            break;
-          case UnlinkedExprOperation.pushTrue:
-            _push(AstTestFactory.booleanLiteral(true));
-            break;
-          // literals
-          case UnlinkedExprOperation.pushInt:
-            int value = uc.ints[intPtr++];
-            _push(AstTestFactory.integer(value));
-            break;
-          case UnlinkedExprOperation.pushLongInt:
-            int value = 0;
-            int count = uc.ints[intPtr++];
-            for (int i = 0; i < count; i++) {
-              int next = uc.ints[intPtr++];
-              value = value << 32 | next;
-            }
-            _push(AstTestFactory.integer(value));
-            break;
-          case UnlinkedExprOperation.pushDouble:
-            double value = uc.doubles[doublePtr++];
-            _push(AstTestFactory.doubleLiteral(value));
-            break;
-          case UnlinkedExprOperation.makeSymbol:
-            String component = uc.strings[stringPtr++];
-            _push(AstTestFactory.symbolLiteral([component]));
-            break;
-          // String
-          case UnlinkedExprOperation.pushString:
-            String value = uc.strings[stringPtr++];
-            _push(AstTestFactory.string2(value));
-            break;
-          case UnlinkedExprOperation.concatenate:
-            int count = uc.ints[intPtr++];
-            List<InterpolationElement> elements = <InterpolationElement>[];
-            for (int i = 0; i < count; i++) {
-              Expression expr = _pop();
-              InterpolationElement element = _newInterpolationElement(expr);
-              elements.insert(0, element);
-            }
-            _push(AstTestFactory.string(elements));
-            break;
-          // binary
-          case UnlinkedExprOperation.equal:
-            _pushBinary(TokenType.EQ_EQ);
-            break;
-          case UnlinkedExprOperation.notEqual:
-            _pushBinary(TokenType.BANG_EQ);
-            break;
-          case UnlinkedExprOperation.and:
-            _pushBinary(TokenType.AMPERSAND_AMPERSAND);
-            break;
-          case UnlinkedExprOperation.or:
-            _pushBinary(TokenType.BAR_BAR);
-            break;
-          case UnlinkedExprOperation.bitXor:
-            _pushBinary(TokenType.CARET);
-            break;
-          case UnlinkedExprOperation.bitAnd:
-            _pushBinary(TokenType.AMPERSAND);
-            break;
-          case UnlinkedExprOperation.bitOr:
-            _pushBinary(TokenType.BAR);
-            break;
-          case UnlinkedExprOperation.bitShiftLeft:
-            _pushBinary(TokenType.LT_LT);
-            break;
-          case UnlinkedExprOperation.bitShiftRight:
-            _pushBinary(TokenType.GT_GT);
-            break;
-          case UnlinkedExprOperation.add:
-            _pushBinary(TokenType.PLUS);
-            break;
-          case UnlinkedExprOperation.subtract:
-            _pushBinary(TokenType.MINUS);
-            break;
-          case UnlinkedExprOperation.multiply:
-            _pushBinary(TokenType.STAR);
-            break;
-          case UnlinkedExprOperation.divide:
-            _pushBinary(TokenType.SLASH);
-            break;
-          case UnlinkedExprOperation.floorDivide:
-            _pushBinary(TokenType.TILDE_SLASH);
-            break;
-          case UnlinkedExprOperation.modulo:
-            _pushBinary(TokenType.PERCENT);
-            break;
-          case UnlinkedExprOperation.greater:
-            _pushBinary(TokenType.GT);
-            break;
-          case UnlinkedExprOperation.greaterEqual:
-            _pushBinary(TokenType.GT_EQ);
-            break;
-          case UnlinkedExprOperation.less:
-            _pushBinary(TokenType.LT);
-            break;
-          case UnlinkedExprOperation.lessEqual:
-            _pushBinary(TokenType.LT_EQ);
-            break;
-          // prefix
-          case UnlinkedExprOperation.complement:
-            _pushPrefix(TokenType.TILDE);
-            break;
-          case UnlinkedExprOperation.negate:
-            _pushPrefix(TokenType.MINUS);
-            break;
-          case UnlinkedExprOperation.not:
-            _pushPrefix(TokenType.BANG);
-            break;
-          // conditional
-          case UnlinkedExprOperation.conditional:
-            Expression elseExpr = _pop();
-            Expression thenExpr = _pop();
-            Expression condition = _pop();
-            _push(AstTestFactory.conditionalExpression(
-                condition, thenExpr, elseExpr));
-            break;
-          case UnlinkedExprOperation.invokeMethodRef:
-            _pushInvokeMethodRef();
-            break;
-          case UnlinkedExprOperation.invokeMethod:
-            List<Expression> arguments = _buildArguments();
-            TypeArgumentList typeArguments = _buildTypeArguments();
-            Expression target = _pop();
-            String name = uc.strings[stringPtr++];
-            _push(AstTestFactory.methodInvocation3(
-                target, name, typeArguments, arguments));
-            break;
-          // containers
-          case UnlinkedExprOperation.makeUntypedList:
-            _pushList(null);
-            break;
-          case UnlinkedExprOperation.makeTypedList:
-            TypeAnnotation itemType = _newTypeName();
-            _pushList(
-                AstTestFactory.typeArgumentList(<TypeAnnotation>[itemType]));
-            break;
-          case UnlinkedExprOperation.makeUntypedMap:
-            _pushMap(null);
-            break;
-          case UnlinkedExprOperation.makeTypedMap:
-            TypeAnnotation keyType = _newTypeName();
-            TypeAnnotation valueType = _newTypeName();
-            _pushMap(AstTestFactory.typeArgumentList(
-                <TypeAnnotation>[keyType, valueType]));
-            break;
-          case UnlinkedExprOperation.pushReference:
-            _pushReference();
-            break;
-          case UnlinkedExprOperation.extractProperty:
-            _pushExtractProperty();
-            break;
-          case UnlinkedExprOperation.invokeConstructor:
-            _pushInstanceCreation();
-            break;
-          case UnlinkedExprOperation.pushParameter:
-            String name = uc.strings[stringPtr++];
-            SimpleIdentifier identifier = AstTestFactory.identifier3(name);
-            identifier.staticElement = parametersInScope[name];
-            _push(identifier);
-            break;
-          case UnlinkedExprOperation.ifNull:
-            _pushBinary(TokenType.QUESTION_QUESTION);
-            break;
-          case UnlinkedExprOperation.await:
-            Expression expression = _pop();
-            _push(AstTestFactory.awaitExpression(expression));
-            break;
-          case UnlinkedExprOperation.pushLocalFunctionReference:
-            _pushLocalFunctionReference();
-            break;
-          case UnlinkedExprOperation.assignToRef:
-            var ref = _createReference();
-            _push(_createAssignment(ref));
-            break;
-          case UnlinkedExprOperation.typeCast:
-            Expression expression = _pop();
-            TypeAnnotation type = _newTypeName();
-            _push(AstTestFactory.asExpression(expression, type));
-            break;
-          case UnlinkedExprOperation.typeCheck:
-            Expression expression = _pop();
-            TypeAnnotation type = _newTypeName();
-            _push(AstTestFactory.isExpression(expression, false, type));
-            break;
-          case UnlinkedExprOperation.throwException:
-            Expression expression = _pop();
-            _push(AstTestFactory.throwExpression2(expression));
-            break;
-          case UnlinkedExprOperation.assignToProperty:
-            Expression target = _pop();
-            String name = uc.strings[stringPtr++];
-            SimpleIdentifier propertyNode = AstTestFactory.identifier3(name);
-            PropertyAccess propertyAccess =
-                AstTestFactory.propertyAccess(target, propertyNode);
-            _push(_createAssignment(propertyAccess));
-            break;
-          case UnlinkedExprOperation.assignToIndex:
-            Expression index = _pop();
-            Expression target = _pop();
-            IndexExpression indexExpression =
-                AstTestFactory.indexExpression(target, index);
-            _push(_createAssignment(indexExpression));
-            break;
-          case UnlinkedExprOperation.extractIndex:
-            Expression index = _pop();
-            Expression target = _pop();
-            _push(AstTestFactory.indexExpression(target, index));
-            break;
-          case UnlinkedExprOperation.pushSuper:
-          case UnlinkedExprOperation.pushThis:
-            throw const _InvalidConstantException(); // TODO(paulberry)
-          case UnlinkedExprOperation.cascadeSectionBegin:
-          case UnlinkedExprOperation.cascadeSectionEnd:
-          case UnlinkedExprOperation.pushLocalFunctionReference:
-          case UnlinkedExprOperation.pushError:
-          case UnlinkedExprOperation.pushTypedAbstract:
-          case UnlinkedExprOperation.pushUntypedAbstract:
-            throw new UnimplementedError(
-                'Unexpected $operation in a constant expression.');
-        }
+    for (UnlinkedExprOperation operation in uc.operations) {
+      switch (operation) {
+        case UnlinkedExprOperation.pushNull:
+          _push(AstTestFactory.nullLiteral());
+          break;
+        // bool
+        case UnlinkedExprOperation.pushFalse:
+          _push(AstTestFactory.booleanLiteral(false));
+          break;
+        case UnlinkedExprOperation.pushTrue:
+          _push(AstTestFactory.booleanLiteral(true));
+          break;
+        // literals
+        case UnlinkedExprOperation.pushInt:
+          int value = uc.ints[intPtr++];
+          _push(AstTestFactory.integer(value));
+          break;
+        case UnlinkedExprOperation.pushLongInt:
+          int value = 0;
+          int count = uc.ints[intPtr++];
+          for (int i = 0; i < count; i++) {
+            int next = uc.ints[intPtr++];
+            value = value << 32 | next;
+          }
+          _push(AstTestFactory.integer(value));
+          break;
+        case UnlinkedExprOperation.pushDouble:
+          double value = uc.doubles[doublePtr++];
+          _push(AstTestFactory.doubleLiteral(value));
+          break;
+        case UnlinkedExprOperation.makeSymbol:
+          String component = uc.strings[stringPtr++];
+          _push(AstTestFactory.symbolLiteral([component]));
+          break;
+        // String
+        case UnlinkedExprOperation.pushString:
+          String value = uc.strings[stringPtr++];
+          _push(AstTestFactory.string2(value));
+          break;
+        case UnlinkedExprOperation.concatenate:
+          int count = uc.ints[intPtr++];
+          List<InterpolationElement> elements = <InterpolationElement>[];
+          for (int i = 0; i < count; i++) {
+            Expression expr = _pop();
+            InterpolationElement element = _newInterpolationElement(expr);
+            elements.insert(0, element);
+          }
+          _push(AstTestFactory.string(elements));
+          break;
+        // binary
+        case UnlinkedExprOperation.equal:
+          _pushBinary(TokenType.EQ_EQ);
+          break;
+        case UnlinkedExprOperation.notEqual:
+          _pushBinary(TokenType.BANG_EQ);
+          break;
+        case UnlinkedExprOperation.and:
+          _pushBinary(TokenType.AMPERSAND_AMPERSAND);
+          break;
+        case UnlinkedExprOperation.or:
+          _pushBinary(TokenType.BAR_BAR);
+          break;
+        case UnlinkedExprOperation.bitXor:
+          _pushBinary(TokenType.CARET);
+          break;
+        case UnlinkedExprOperation.bitAnd:
+          _pushBinary(TokenType.AMPERSAND);
+          break;
+        case UnlinkedExprOperation.bitOr:
+          _pushBinary(TokenType.BAR);
+          break;
+        case UnlinkedExprOperation.bitShiftLeft:
+          _pushBinary(TokenType.LT_LT);
+          break;
+        case UnlinkedExprOperation.bitShiftRight:
+          _pushBinary(TokenType.GT_GT);
+          break;
+        case UnlinkedExprOperation.add:
+          _pushBinary(TokenType.PLUS);
+          break;
+        case UnlinkedExprOperation.subtract:
+          _pushBinary(TokenType.MINUS);
+          break;
+        case UnlinkedExprOperation.multiply:
+          _pushBinary(TokenType.STAR);
+          break;
+        case UnlinkedExprOperation.divide:
+          _pushBinary(TokenType.SLASH);
+          break;
+        case UnlinkedExprOperation.floorDivide:
+          _pushBinary(TokenType.TILDE_SLASH);
+          break;
+        case UnlinkedExprOperation.modulo:
+          _pushBinary(TokenType.PERCENT);
+          break;
+        case UnlinkedExprOperation.greater:
+          _pushBinary(TokenType.GT);
+          break;
+        case UnlinkedExprOperation.greaterEqual:
+          _pushBinary(TokenType.GT_EQ);
+          break;
+        case UnlinkedExprOperation.less:
+          _pushBinary(TokenType.LT);
+          break;
+        case UnlinkedExprOperation.lessEqual:
+          _pushBinary(TokenType.LT_EQ);
+          break;
+        // prefix
+        case UnlinkedExprOperation.complement:
+          _pushPrefix(TokenType.TILDE);
+          break;
+        case UnlinkedExprOperation.negate:
+          _pushPrefix(TokenType.MINUS);
+          break;
+        case UnlinkedExprOperation.not:
+          _pushPrefix(TokenType.BANG);
+          break;
+        // conditional
+        case UnlinkedExprOperation.conditional:
+          Expression elseExpr = _pop();
+          Expression thenExpr = _pop();
+          Expression condition = _pop();
+          _push(AstTestFactory.conditionalExpression(
+              condition, thenExpr, elseExpr));
+          break;
+        case UnlinkedExprOperation.invokeMethodRef:
+          _pushInvokeMethodRef();
+          break;
+        case UnlinkedExprOperation.invokeMethod:
+          List<Expression> arguments = _buildArguments();
+          TypeArgumentList typeArguments = _buildTypeArguments();
+          Expression target = _pop();
+          String name = uc.strings[stringPtr++];
+          _push(AstTestFactory.methodInvocation3(
+              target, name, typeArguments, arguments));
+          break;
+        // containers
+        case UnlinkedExprOperation.makeUntypedList:
+          _pushList(null);
+          break;
+        case UnlinkedExprOperation.makeTypedList:
+          TypeAnnotation itemType = _newTypeName();
+          _pushList(
+              AstTestFactory.typeArgumentList(<TypeAnnotation>[itemType]));
+          break;
+        case UnlinkedExprOperation.makeUntypedMap:
+          _pushMap(null);
+          break;
+        case UnlinkedExprOperation.makeTypedMap:
+          TypeAnnotation keyType = _newTypeName();
+          TypeAnnotation valueType = _newTypeName();
+          _pushMap(AstTestFactory.typeArgumentList(
+              <TypeAnnotation>[keyType, valueType]));
+          break;
+        case UnlinkedExprOperation.makeUntypedSet:
+          _pushSet(null);
+          break;
+        case UnlinkedExprOperation.makeTypedSet:
+          TypeAnnotation itemType = _newTypeName();
+          _pushSet(AstTestFactory.typeArgumentList(<TypeAnnotation>[itemType]));
+          break;
+        case UnlinkedExprOperation.pushReference:
+          _pushReference();
+          break;
+        case UnlinkedExprOperation.extractProperty:
+          _pushExtractProperty();
+          break;
+        case UnlinkedExprOperation.invokeConstructor:
+          _pushInstanceCreation();
+          break;
+        case UnlinkedExprOperation.pushParameter:
+          String name = uc.strings[stringPtr++];
+          SimpleIdentifier identifier = AstTestFactory.identifier3(name);
+          identifier.staticElement = parametersInScope[name];
+          _push(identifier);
+          break;
+        case UnlinkedExprOperation.ifNull:
+          _pushBinary(TokenType.QUESTION_QUESTION);
+          break;
+        case UnlinkedExprOperation.await:
+          Expression expression = _pop();
+          _push(AstTestFactory.awaitExpression(expression));
+          break;
+        case UnlinkedExprOperation.pushLocalFunctionReference:
+          _pushLocalFunctionReference();
+          break;
+        case UnlinkedExprOperation.assignToRef:
+          var ref = _createReference();
+          _push(_createAssignment(ref));
+          break;
+        case UnlinkedExprOperation.typeCast:
+          Expression expression = _pop();
+          TypeAnnotation type = _newTypeName();
+          _push(AstTestFactory.asExpression(expression, type));
+          break;
+        case UnlinkedExprOperation.typeCheck:
+          Expression expression = _pop();
+          TypeAnnotation type = _newTypeName();
+          _push(AstTestFactory.isExpression(expression, false, type));
+          break;
+        case UnlinkedExprOperation.throwException:
+          Expression expression = _pop();
+          _push(AstTestFactory.throwExpression2(expression));
+          break;
+        case UnlinkedExprOperation.assignToProperty:
+          Expression target = _pop();
+          String name = uc.strings[stringPtr++];
+          SimpleIdentifier propertyNode = AstTestFactory.identifier3(name);
+          PropertyAccess propertyAccess =
+              AstTestFactory.propertyAccess(target, propertyNode);
+          _push(_createAssignment(propertyAccess));
+          break;
+        case UnlinkedExprOperation.assignToIndex:
+          Expression index = _pop();
+          Expression target = _pop();
+          IndexExpression indexExpression =
+              AstTestFactory.indexExpression(target, index);
+          _push(_createAssignment(indexExpression));
+          break;
+        case UnlinkedExprOperation.extractIndex:
+          Expression index = _pop();
+          Expression target = _pop();
+          _push(AstTestFactory.indexExpression(target, index));
+          break;
+        case UnlinkedExprOperation.pushSuper:
+          _push(AstTestFactory.superExpression());
+          break;
+        case UnlinkedExprOperation.pushThis:
+          _push(AstTestFactory.thisExpression());
+          break;
+        case UnlinkedExprOperation.cascadeSectionBegin:
+        case UnlinkedExprOperation.cascadeSectionEnd:
+        case UnlinkedExprOperation.pushLocalFunctionReference:
+        case UnlinkedExprOperation.pushError:
+        case UnlinkedExprOperation.pushTypedAbstract:
+        case UnlinkedExprOperation.pushUntypedAbstract:
+          throw new UnimplementedError(
+              'Unexpected $operation in a constant expression.');
       }
-    } on _InvalidConstantException {
-      return AstTestFactory.identifier3(r'#invalidConst');
     }
     return stack.single;
   }
@@ -430,9 +436,6 @@
         ..staticElement = element;
       return AstTestFactory.identifier(enclosing, identifier);
     }
-    if (requireValidConst && element == null) {
-      throw const _InvalidConstantException();
-    }
     SimpleIdentifier property = AstTestFactory.identifier3(info.name)
       ..staticElement = element;
     return AstTestFactory.propertyAccess(enclosing, property);
@@ -522,12 +525,16 @@
 
   Expression _createReference() {
     EntityRef ref = uc.references[refPtr++];
-    ReferenceInfo info = resynthesizer.getReferenceInfo(ref.reference);
-    Expression node = _buildIdentifierSequence(info);
-    if (requireValidConst && node is Identifier && node.staticElement == null) {
-      throw const _InvalidConstantException();
+    if (ref.paramReference != 0) {
+      // This is a reference to a type parameter.  For type inference purposes
+      // we don't actually need to know which type parameter it's a reference
+      // to; we just need to know that it represents a type.  So map it to
+      // `Object`.
+      return AstTestFactory.identifier3('Object')
+        ..staticElement = resynthesizer.typeProvider.objectType.element;
     }
-    return node;
+    ReferenceInfo info = resynthesizer.getReferenceInfo(ref.reference);
+    return _buildIdentifierSequence(info);
   }
 
   PropertyAccessorElement _getStringLengthElement() =>
@@ -605,11 +612,11 @@
       } else if (info.element is ClassElement) {
         constructorName = null;
       } else {
-        List<Expression> arguments = _buildArguments();
-        SimpleIdentifier name = AstTestFactory.identifier3(info.name);
-        name.staticElement = info.element;
-        name.setProperty(ARGUMENT_LIST, AstTestFactory.argumentList(arguments));
-        _push(name);
+        // Unexpected element, consider it unresolved.
+        _buildArguments();
+        var identifier = AstTestFactory.identifier3('__unresolved__')
+          ..staticType = resynthesizer.typeProvider.dynamicType;
+        _push(identifier);
         return;
       }
       InterfaceType definingType = resynthesizer.createConstructorDefiningType(
@@ -657,9 +664,6 @@
       constructorNode = AstTestFactory.constructorName(typeNode, null);
     }
     constructorNode.staticElement = constructorElement;
-    if (constructorElement == null) {
-      throw const _InvalidConstantException();
-    }
     // create InstanceCreationExpression
     InstanceCreationExpression instanceCreation =
         AstTestFactory.instanceCreationExpression(
@@ -720,7 +724,6 @@
   }
 
   void _pushLocalFunctionReference() {
-    _throwIfConst();
     int popCount = uc.ints[intPtr++];
     // Note: nonzero popCount is no longer used.
     assert(popCount == 0);
@@ -796,6 +799,15 @@
     _push(_createReference());
   }
 
+  void _pushSet(TypeArgumentList typeArguments) {
+    int count = uc.ints[intPtr++];
+    List<Expression> elements = <Expression>[];
+    for (int i = 0; i < count; i++) {
+      elements.insert(0, _pop());
+    }
+    _push(AstTestFactory.setLiteral(Keyword.CONST, typeArguments, elements));
+  }
+
   List<Expression> _removeTopItems(int count) {
     int start = stack.length - count;
     int end = stack.length;
@@ -804,12 +816,6 @@
     return items;
   }
 
-  void _throwIfConst() {
-    if (requireValidConst) {
-      throw const _InvalidConstantException();
-    }
-  }
-
   /// Figures out the default value of [parametersInScope] based on [context].
   ///
   /// If [context] is (or contains) a constructor, then its parameters are used.
@@ -827,11 +833,3 @@
     return result;
   }
 }
-
-/**
- * This exception is thrown when we detect that the constant expression
- * being resynthesized is not a valid constant expression.
- */
-class _InvalidConstantException {
-  const _InvalidConstantException();
-}
diff --git a/pkg/analyzer/lib/src/summary/flat_buffers.dart b/pkg/analyzer/lib/src/summary/flat_buffers.dart
index 3449a3b..c291d61 100644
--- a/pkg/analyzer/lib/src/summary/flat_buffers.dart
+++ b/pkg/analyzer/lib/src/summary/flat_buffers.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -757,7 +757,7 @@
 /**
  * List of booleans backed by 8-bit unsigned integers.
  */
-class _FbBoolList extends Object with ListMixin<bool> implements List<bool> {
+class _FbBoolList with ListMixin<bool> implements List<bool> {
   final BufferContext bc;
   final int offset;
   int _length;
@@ -829,7 +829,7 @@
 /**
  * The base class for immutable lists read from flat buffers.
  */
-abstract class _FbList<E> extends Object with ListMixin<E> implements List<E> {
+abstract class _FbList<E> with ListMixin<E> implements List<E> {
   final BufferContext bc;
   final int offset;
   int _length;
diff --git a/pkg/analyzer/lib/src/summary/format.fbs b/pkg/analyzer/lib/src/summary/format.fbs
index 4289b7f..44e6520d 100644
--- a/pkg/analyzer/lib/src/summary/format.fbs
+++ b/pkg/analyzer/lib/src/summary/format.fbs
@@ -639,7 +639,19 @@
   pushThis,
 
   /// Push `super` expression onto the stack.
-  pushSuper
+  pushSuper,
+
+  /// Pop the top n values from the stack (where n is obtained from
+  /// [UnlinkedExpr.ints]), place them in a [Set], and push the result back
+  /// onto the stack.  The type parameter for the [Set] is implicitly
+  /// `dynamic`.
+  makeUntypedSet,
+
+  /// Pop the top n values from the stack (where n is obtained from
+  /// [UnlinkedExpr.ints]), place them in a [Set], and push the result back
+  /// onto the stack.  The type parameter for the [Set] is obtained from
+  /// [UnlinkedExpr.references].
+  makeTypedSet
 }
 
 /// Enum used to indicate the kind of a parameter.
diff --git a/pkg/analyzer/lib/src/summary/idl.dart b/pkg/analyzer/lib/src/summary/idl.dart
index 8a85d55..02bd1fd 100644
--- a/pkg/analyzer/lib/src/summary/idl.dart
+++ b/pkg/analyzer/lib/src/summary/idl.dart
@@ -1954,6 +1954,18 @@
 
   /// Push `super` expression onto the stack.
   pushSuper,
+
+  /// Pop the top n values from the stack (where n is obtained from
+  /// [UnlinkedExpr.ints]), place them in a [Set], and push the result back
+  /// onto the stack.  The type parameter for the [Set] is implicitly
+  /// `dynamic`.
+  makeUntypedSet,
+
+  /// Pop the top n values from the stack (where n is obtained from
+  /// [UnlinkedExpr.ints]), place them in a [Set], and push the result back
+  /// onto the stack.  The type parameter for the [Set] is obtained from
+  /// [UnlinkedExpr.references].
+  makeTypedSet,
 }
 
 /// Unlinked summary information about an import declaration.
diff --git a/pkg/analyzer/lib/src/summary/link.dart b/pkg/analyzer/lib/src/summary/link.dart
index 7feaae8..8e0381c 100644
--- a/pkg/analyzer/lib/src/summary/link.dart
+++ b/pkg/analyzer/lib/src/summary/link.dart
@@ -1,7 +1,9 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'package:analyzer/dart/analysis/session.dart';
+
 /// This library is capable of producing linked summaries from unlinked
 /// ones (or prelinked ones).  It functions by building a miniature
 /// element model to represent the contents of the summaries, and then
@@ -416,14 +418,12 @@
   AnalysisOptionsForLink(this._linker);
 
   @override
-  bool get declarationCasts => true;
-
-  @override
   bool get hint => false;
 
   @override
   bool get implicitCasts => true;
 
+  @deprecated
   @override
   bool get previewDart2 => true;
 
@@ -439,7 +439,7 @@
 
 /// Element representing a class or enum resynthesized from a summary
 /// during linking.
-abstract class ClassElementForLink extends Object
+abstract class ClassElementForLink
     with ReferenceableElementForLink
     implements AbstractClassElementImpl {
   Map<String, ReferenceableElementForLink> _containedNames;
@@ -800,6 +800,9 @@
   String get name => _unlinkedClass.name;
 
   @override
+  AnalysisSession get session => enclosingUnit.session;
+
+  @override
   List<InterfaceType> get superclassConstraints {
     if (_superclassConstraints == null) {
       if (isMixin) {
@@ -1229,6 +1232,9 @@
   ResynthesizerContext get resynthesizerContext => this;
 
   @override
+  AnalysisSession get session => library.session;
+
+  @override
   List<TopLevelVariableElementForLink> get topLevelVariables {
     if (_topLevelVariables == null) {
       List<Expression> initializerExpressionsForInference;
@@ -1908,6 +1914,7 @@
           break;
         case UnlinkedExprOperation.makeUntypedList:
         case UnlinkedExprOperation.makeUntypedMap:
+        case UnlinkedExprOperation.makeUntypedSet:
           intPtr++;
           break;
         case UnlinkedExprOperation.assignToRef:
@@ -1930,6 +1937,7 @@
           refPtr += numTypeArguments;
           break;
         case UnlinkedExprOperation.makeTypedList:
+        case UnlinkedExprOperation.makeTypedSet:
           refPtr++;
           intPtr++;
           break;
@@ -2221,7 +2229,7 @@
 
 /// Base class for executable elements resynthesized from a summary during
 /// linking.
-abstract class ExecutableElementForLink extends Object
+abstract class ExecutableElementForLink
     with TypeParameterizedElementMixin, ParameterParentElementForLink
     implements ExecutableElementImpl {
   /// The unlinked representation of the method in the summary.
@@ -2339,6 +2347,9 @@
   }
 
   @override
+  AnalysisSession get session => compilationUnit.session;
+
+  @override
   FunctionTypeImpl get type => _type ??= new FunctionTypeImpl(this);
 
   @override
@@ -2722,7 +2733,7 @@
 
 /// Element representing a function-typed parameter resynthesied from a summary
 /// during linking.
-class FunctionElementForLink_FunctionTypedParam extends Object
+class FunctionElementForLink_FunctionTypedParam
     with ParameterParentElementForLink
     implements FunctionElement {
   @override
@@ -2775,7 +2786,7 @@
 }
 
 /// Element representing the initializer expression of a variable.
-class FunctionElementForLink_Initializer extends Object
+class FunctionElementForLink_Initializer
     with ReferenceableElementForLink, TypeParameterizedElementMixin
     implements FunctionElementForLink_Local {
   /// The variable for which this element is the initializer.
@@ -3086,7 +3097,7 @@
 }
 
 /// Element representing a typedef resynthesized from a summary during linking.
-class FunctionTypeAliasElementForLink extends Object
+class FunctionTypeAliasElementForLink
     with
         TypeParameterizedElementMixin,
         ParameterParentElementForLink,
@@ -3147,6 +3158,9 @@
       enclosingElement.resolveTypeRef(this, _unlinkedTypedef.returnType);
 
   @override
+  AnalysisSession get session => enclosingElement.session;
+
+  @override
   TypeParameterizedElementMixin get typeParameterContext => this;
 
   @override
@@ -3198,7 +3212,7 @@
 
 /// Element representing a generic function resynthesized from a summary during
 /// linking.
-class GenericFunctionTypeElementForLink extends Object
+class GenericFunctionTypeElementForLink
     with
         TypeParameterizedElementMixin,
         ParameterParentElementForLink,
@@ -3262,6 +3276,9 @@
       _returnType ??= enclosingUnit.resolveTypeRef(this, _unlinkedReturnType);
 
   @override
+  AnalysisSession get session => enclosingElement.session;
+
+  @override
   FunctionType get type {
     return _type ??= new FunctionTypeImpl(this);
   }
@@ -3278,7 +3295,7 @@
 
 /// Element representing a generic typedef resynthesized from a summary during
 /// linking.
-class GenericTypeAliasElementForLink extends Object
+class GenericTypeAliasElementForLink
     with
         TypeParameterizedElementMixin,
         ParameterParentElementForLink,
@@ -3342,6 +3359,9 @@
       this, _unlinkedTypedef.returnType.syntheticReturnType);
 
   @override
+  AnalysisSession get session => enclosingElement.session;
+
+  @override
   TypeParameterizedElementMixin get typeParameterContext => this;
 
   @override
@@ -4075,8 +4095,7 @@
 /// Accesses to a chain of non-static members separated by '.' are handled by
 /// creating a [NonstaticMemberElementForLink] that points to another
 /// [NonstaticMemberElementForLink], to whatever nesting level is necessary.
-class NonstaticMemberElementForLink extends Object
-    with ReferenceableElementForLink {
+class NonstaticMemberElementForLink with ReferenceableElementForLink {
   /// The [ReferenceableElementForLink] which is the target of the non-static
   /// reference.
   final ReferenceableElementForLink _target;
@@ -4455,7 +4474,7 @@
 
 /// Specialization of [PropertyAccessorElementForLink] for synthetic accessors
 /// implied by the synthetic fields of an enum declaration.
-class PropertyAccessorElementForLink_EnumField extends Object
+class PropertyAccessorElementForLink_EnumField
     with ReferenceableElementForLink
     implements PropertyAccessorElementForLink {
   @override
@@ -4472,6 +4491,9 @@
   Element get enclosingElement => variable.enclosingElement;
 
   @override
+  bool get isAbstract => false;
+
+  @override
   bool get isGetter => true;
 
   @override
@@ -4592,7 +4614,7 @@
 
 /// Specialization of [PropertyAccessorElementForLink] for synthetic accessors
 /// implied by a field or variable declaration.
-class PropertyAccessorElementForLink_Variable extends Object
+class PropertyAccessorElementForLink_Variable
     with ReferenceableElementForLink
     implements PropertyAccessorElementForLink {
   @override
@@ -4710,7 +4732,7 @@
 /// Base class representing an element which can be the target of a reference.
 /// When used as a mixin, implements the default behavior shared by most
 /// elements.
-abstract class ReferenceableElementForLink implements Element {
+mixin ReferenceableElementForLink implements Element {
   /// If this element is a class reference, return it. Otherwise return `null`.
   ClassElementForLink get asClass => null;
 
@@ -4989,8 +5011,7 @@
 }
 
 /// Element used for references to special types such as `void`.
-class SpecialTypeElementForLink extends Object
-    with ReferenceableElementForLink {
+class SpecialTypeElementForLink with ReferenceableElementForLink {
   final Linker linker;
   final DartType type;
 
@@ -5178,9 +5199,11 @@
           break;
         case UnlinkedExprOperation.makeUntypedList:
         case UnlinkedExprOperation.makeUntypedMap:
+        case UnlinkedExprOperation.makeUntypedSet:
           intPtr++;
           break;
         case UnlinkedExprOperation.makeTypedList:
+        case UnlinkedExprOperation.makeTypedSet:
           refPtr++;
           intPtr++;
           break;
@@ -5304,9 +5327,12 @@
   InterfaceType _iterableType;
   InterfaceType _listType;
   InterfaceType _mapType;
+  InterfaceType _mapNullNullType;
   InterfaceType _nullType;
   InterfaceType _numType;
   InterfaceType _objectType;
+  InterfaceType _setType;
+  InterfaceType _setNullType;
   InterfaceType _stackTraceType;
   InterfaceType _streamDynamicType;
   InterfaceType _streamType;
@@ -5375,6 +5401,10 @@
       _listType ??= _buildInterfaceType(_linker.coreLibrary, 'List');
 
   @override
+  InterfaceType get mapNullNullType =>
+      _mapNullNullType ??= mapType.instantiate(<DartType>[nullType, nullType]);
+
+  @override
   InterfaceType get mapType =>
       _mapType ??= _buildInterfaceType(_linker.coreLibrary, 'Map');
 
@@ -5397,6 +5427,14 @@
       _objectType ??= _buildInterfaceType(_linker.coreLibrary, 'Object');
 
   @override
+  InterfaceType get setNullType =>
+      _setNullType ??= setType.instantiate(<DartType>[nullType]);
+
+  @override
+  InterfaceType get setType =>
+      _setType ??= _buildInterfaceType(_linker.coreLibrary, 'Set');
+
+  @override
   InterfaceType get stackTraceType => _stackTraceType ??=
       _buildInterfaceType(_linker.coreLibrary, 'StackTrace');
 
@@ -5434,7 +5472,7 @@
 }
 
 /// Singleton element used for unresolved references.
-class UndefinedElementForLink extends Object with ReferenceableElementForLink {
+class UndefinedElementForLink with ReferenceableElementForLink {
   static final UndefinedElementForLink instance =
       new UndefinedElementForLink._();
 
diff --git a/pkg/analyzer/lib/src/summary/package_bundle_reader.dart b/pkg/analyzer/lib/src/summary/package_bundle_reader.dart
index 801ab29..dc9e818 100644
--- a/pkg/analyzer/lib/src/summary/package_bundle_reader.dart
+++ b/pkg/analyzer/lib/src/summary/package_bundle_reader.dart
@@ -1,6 +1,7 @@
 import 'dart:io' as io;
 import 'dart:math' show min;
 
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/context/cache.dart';
@@ -73,8 +74,9 @@
  */
 class InputPackagesResultProvider extends ResynthesizerResultProvider {
   InputPackagesResultProvider(
-      InternalAnalysisContext context, SummaryDataStore dataStore)
-      : super(context, dataStore) {
+      InternalAnalysisContext context, SummaryDataStore dataStore,
+      {AnalysisSession session})
+      : super(context, session, dataStore) {
     createResynthesizer();
     context.typeProvider = resynthesizer.typeProvider;
     resynthesizer.finishCoreAsyncLibraries();
@@ -167,11 +169,12 @@
  */
 abstract class ResynthesizerResultProvider extends ResultProvider {
   final InternalAnalysisContext context;
+  final AnalysisSession session;
   final SummaryDataStore _dataStore;
 
   StoreBasedSummaryResynthesizer _resynthesizer;
 
-  ResynthesizerResultProvider(this.context, this._dataStore);
+  ResynthesizerResultProvider(this.context, this.session, this._dataStore);
 
   SummaryResynthesizer get resynthesizer => _resynthesizer;
 
@@ -317,7 +320,7 @@
    */
   void createResynthesizer() {
     _resynthesizer = new StoreBasedSummaryResynthesizer(
-        context, context.sourceFactory, true, _dataStore);
+        context, session, context.sourceFactory, true, _dataStore);
   }
 
   /**
@@ -334,9 +337,13 @@
 class StoreBasedSummaryResynthesizer extends SummaryResynthesizer {
   final SummaryDataStore _dataStore;
 
-  StoreBasedSummaryResynthesizer(AnalysisContext context,
-      SourceFactory sourceFactory, bool _, this._dataStore)
-      : super(context, sourceFactory, true);
+  StoreBasedSummaryResynthesizer(
+      AnalysisContext context,
+      AnalysisSession session,
+      SourceFactory sourceFactory,
+      bool _,
+      this._dataStore)
+      : super(context, session, sourceFactory, true);
 
   @override
   LinkedLibrary getLinkedSummary(String uri) {
diff --git a/pkg/analyzer/lib/src/summary/public_namespace_computer.dart b/pkg/analyzer/lib/src/summary/public_namespace_computer.dart
index 4d78177..4c2e4db 100644
--- a/pkg/analyzer/lib/src/summary/public_namespace_computer.dart
+++ b/pkg/analyzer/lib/src/summary/public_namespace_computer.dart
@@ -2,7 +2,8 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/src/summary/format.dart';
 import 'package:analyzer/src/summary/idl.dart';
 
diff --git a/pkg/analyzer/lib/src/summary/resynthesize.dart b/pkg/analyzer/lib/src/summary/resynthesize.dart
index 2add257..6b7fa39 100644
--- a/pkg/analyzer/lib/src/summary/resynthesize.dart
+++ b/pkg/analyzer/lib/src/summary/resynthesize.dart
@@ -4,6 +4,7 @@
 
 import 'dart:collection';
 
+import 'package:analyzer/dart/analysis/session.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
@@ -171,8 +172,9 @@
   final Map<String, LibraryElement> _resynthesizedLibraries =
       <String, LibraryElement>{};
 
-  SummaryResynthesizer(AnalysisContext context, this.sourceFactory, bool _)
-      : super(context) {
+  SummaryResynthesizer(AnalysisContext context, AnalysisSession session,
+      this.sourceFactory, bool _)
+      : super(context, session) {
     _buildTypeProvider();
   }
 
@@ -327,7 +329,7 @@
       Source librarySource = _getSource(uri);
       if (serializedLibrary == null) {
         LibraryElementImpl libraryElement =
-            new LibraryElementImpl(context, '', -1, 0);
+            new LibraryElementImpl(context, session, '', -1, 0);
         libraryElement.isSynthetic = true;
         CompilationUnitElementImpl unitElement =
             new CompilationUnitElementImpl();
@@ -519,7 +521,7 @@
 
 /// [UnitResynthesizerMixin] contains methods useful for implementing the
 /// [UnitResynthesizer] interface.
-abstract class UnitResynthesizerMixin implements UnitResynthesizer {
+mixin UnitResynthesizerMixin implements UnitResynthesizer {
   @override
   DartType createConstructorDefiningType(ElementImpl context,
       ReferenceInfo info, List<EntityRef> typeArgumentRefs) {
@@ -579,6 +581,9 @@
 
   @override
   ElementLocation get location => actualElement.location;
+
+  @override
+  AnalysisSession get session => enclosingElement.session;
 }
 
 /// Specialization of [LibraryResynthesizer] for resynthesis from linked
@@ -698,6 +703,7 @@
     bool hasName = unlinkedUnits[0].libraryName.isNotEmpty;
     library = new LibraryElementImpl.forSerialized(
         summaryResynthesizer.context,
+        summaryResynthesizer.session,
         unlinkedUnits[0].libraryName,
         hasName ? unlinkedUnits[0].libraryNameOffset : -1,
         unlinkedUnits[0].libraryNameLength,
@@ -1242,21 +1248,13 @@
     if (constExpr == null) {
       // Invalid constant expression.
     } else if (constExpr is Identifier) {
-      var element = constExpr.staticElement;
       ArgumentList arguments = constExpr.getProperty(ExprBuilder.ARGUMENT_LIST);
-      if (element is PropertyAccessorElement && arguments == null) {
-        elementAnnotation.element = element;
-        elementAnnotation.annotationAst = AstTestFactory.annotation(constExpr);
-      } else if (element is ConstructorElement && arguments != null) {
-        elementAnnotation.element = element;
-        elementAnnotation.annotationAst =
-            AstTestFactory.annotation2(constExpr, null, arguments);
-      } else {
-        elementAnnotation.annotationAst = AstTestFactory.annotation(
-            AstTestFactory.identifier3(r'#invalidConst'));
-      }
-    } else if (constExpr is InstanceCreationExpression) {
       elementAnnotation.element = constExpr.staticElement;
+      elementAnnotation.annotationAst =
+          AstTestFactory.annotation2(constExpr, null, arguments);
+    } else if (constExpr is InstanceCreationExpression) {
+      var element = constExpr.staticElement;
+      elementAnnotation.element = element;
       Identifier typeName = constExpr.constructorName.type.name;
       SimpleIdentifier constructorName = constExpr.constructorName.name;
       if (typeName is SimpleIdentifier && constructorName != null) {
@@ -1273,20 +1271,10 @@
       var propertyName = constExpr.propertyName;
       var propertyElement = propertyName.staticElement;
       ArgumentList arguments = constExpr.getProperty(ExprBuilder.ARGUMENT_LIST);
-      if (propertyElement is PropertyAccessorElement && arguments == null) {
-        elementAnnotation.element = propertyElement;
-        elementAnnotation.annotationAst =
-            AstTestFactory.annotation2(target, propertyName, null)
-              ..element = propertyElement;
-      } else if (propertyElement is ConstructorElement && arguments != null) {
-        elementAnnotation.element = propertyElement;
-        elementAnnotation.annotationAst =
-            AstTestFactory.annotation2(target, propertyName, arguments)
-              ..element = propertyElement;
-      } else {
-        elementAnnotation.annotationAst = AstTestFactory.annotation(
-            AstTestFactory.identifier3(r'#invalidConst'));
-      }
+      elementAnnotation.element = propertyElement;
+      elementAnnotation.annotationAst =
+          AstTestFactory.annotation2(target, propertyName, arguments)
+            ..element = propertyElement;
     } else {
       throw new StateError(
           'Unexpected annotation type: ${constExpr.runtimeType}');
diff --git a/pkg/analyzer/lib/src/summary/summarize_const_expr.dart b/pkg/analyzer/lib/src/summary/summarize_const_expr.dart
index 6bb8870..3a1e036 100644
--- a/pkg/analyzer/lib/src/summary/summarize_const_expr.dart
+++ b/pkg/analyzer/lib/src/summary/summarize_const_expr.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -317,6 +317,8 @@
       _serializeListLiteral(expr);
     } else if (expr is MapLiteral) {
       _serializeMapLiteral(expr);
+    } else if (expr is SetLiteral) {
+      _serializeSetLiteral(expr);
     } else if (expr is MethodInvocation) {
       _serializeMethodInvocation(expr);
     } else if (expr is BinaryExpression) {
@@ -621,6 +623,23 @@
     }
   }
 
+  void _serializeSetLiteral(SetLiteral expr) {
+    if (forConst || expr.typeArguments == null) {
+      List<Expression> elements = expr.elements;
+      elements.forEach(_serialize);
+      ints.add(elements.length);
+    } else {
+      ints.add(0);
+    }
+    if (expr.typeArguments != null &&
+        expr.typeArguments.arguments.length == 1) {
+      references.add(serializeType(expr.typeArguments.arguments[0]));
+      operations.add(UnlinkedExprOperation.makeTypedSet);
+    } else {
+      operations.add(UnlinkedExprOperation.makeUntypedSet);
+    }
+  }
+
   void _serializeString(StringLiteral expr) {
     if (expr is AdjacentStrings) {
       if (expr.strings.every((string) => string is SimpleStringLiteral)) {
diff --git a/pkg/analyzer/lib/src/summary/summarize_elements.dart b/pkg/analyzer/lib/src/summary/summarize_elements.dart
index 9964703..ba4cc40 100644
--- a/pkg/analyzer/lib/src/summary/summarize_elements.dart
+++ b/pkg/analyzer/lib/src/summary/summarize_elements.dart
@@ -26,7 +26,7 @@
    * data that was previously not summarized), this value should be incremented
    * by 1.
    */
-  static const int currentMinorVersion = 0;
+  static const int currentMinorVersion = 1;
 
   final List<String> _linkedLibraryUris = <String>[];
   final List<LinkedLibraryBuilder> _linkedLibraries = <LinkedLibraryBuilder>[];
diff --git a/pkg/analyzer/lib/src/summary/summary_sdk.dart b/pkg/analyzer/lib/src/summary/summary_sdk.dart
index 9fc486b..b60e627 100644
--- a/pkg/analyzer/lib/src/summary/summary_sdk.dart
+++ b/pkg/analyzer/lib/src/summary/summary_sdk.dart
@@ -131,10 +131,13 @@
   InterfaceType _iterableType;
   InterfaceType _listType;
   InterfaceType _mapType;
+  InterfaceType _mapNullNullType;
   DartObjectImpl _nullObject;
   InterfaceType _nullType;
   InterfaceType _numType;
   InterfaceType _objectType;
+  InterfaceType _setType;
+  InterfaceType _setNullType;
   InterfaceType _stackTraceType;
   InterfaceType _streamDynamicType;
   InterfaceType _streamType;
@@ -247,6 +250,13 @@
   }
 
   @override
+  InterfaceType get mapNullNullType {
+    assert(_coreLibrary != null);
+    return _mapNullNullType ??=
+        mapType.instantiate(<DartType>[nullType, nullType]);
+  }
+
+  @override
   InterfaceType get mapType {
     assert(_coreLibrary != null);
     _mapType ??= _getType(_coreLibrary, "Map");
@@ -283,6 +293,18 @@
   }
 
   @override
+  InterfaceType get setNullType {
+    assert(_coreLibrary != null);
+    return _setNullType ??= setType.instantiate(<DartType>[nullType]);
+  }
+
+  @override
+  InterfaceType get setType {
+    assert(_coreLibrary != null);
+    return _setType ??= _getType(_coreLibrary, "Set");
+  }
+
+  @override
   InterfaceType get stackTraceType {
     assert(_coreLibrary != null);
     _stackTraceType ??= _getType(_coreLibrary, "StackTrace");
diff --git a/pkg/analyzer/lib/src/task/dart.dart b/pkg/analyzer/lib/src/task/dart.dart
index 7e5c4bc..11d6dab 100644
--- a/pkg/analyzer/lib/src/task/dart.dart
+++ b/pkg/analyzer/lib/src/task/dart.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -1627,7 +1627,7 @@
     //
     if (libraryElement == null) {
       libraryElement =
-          new LibraryElementImpl.forNode(owningContext, libraryNameNode);
+          new LibraryElementImpl.forNode(owningContext, null, libraryNameNode);
       libraryElement.isSynthetic = modificationTime < 0;
       libraryElement.definingCompilationUnit = definingCompilationUnitElement;
       libraryElement.entryPoint = entryPoint;
@@ -3235,7 +3235,7 @@
           "${variable.displayName} at $offset in $variableSource");
     }
     VariableDeclaration declaration =
-        node.getAncestor((AstNode ancestor) => ancestor is VariableDeclaration);
+        node.thisOrAncestorOfType<VariableDeclaration>();
     if (declaration == null || declaration.name != node) {
       Source variableSource = variable.source;
       Source unitSource =
@@ -5452,8 +5452,7 @@
       CodeChecker checker = new CodeChecker(
           typeProvider,
           new StrongTypeSystemImpl(typeProvider,
-              implicitCasts: options.implicitCasts,
-              declarationCasts: options.declarationCasts),
+              implicitCasts: options.implicitCasts),
           errorListener,
           options);
       checker.visitCompilationUnit(unit);
diff --git a/pkg/analyzer/lib/src/task/options.dart b/pkg/analyzer/lib/src/task/options.dart
index c1c96b6..1032268 100644
--- a/pkg/analyzer/lib/src/task/options.dart
+++ b/pkg/analyzer/lib/src/task/options.dart
@@ -1,12 +1,15 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:collection';
 
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/error/error.dart';
+import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/source/error_processor.dart';
 import 'package:analyzer/src/analysis_options/analysis_options_provider.dart';
+import 'package:analyzer/src/analysis_options/error/option_codes.dart';
+import 'package:analyzer/src/dart/analysis/experiments.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analyzer/src/generated/source.dart';
@@ -42,6 +45,7 @@
   static const String enableSuperMixins = 'enableSuperMixins';
   static const String enablePreviewDart2 = 'enablePreviewDart2';
 
+  static const String enableExperiment = 'enable-experiment';
   static const String errors = 'errors';
   static const String exclude = 'exclude';
   static const String include = 'include';
@@ -69,6 +73,7 @@
 
   /// Supported top-level `analyzer` options.
   static const List<String> topLevel = const [
+    enableExperiment,
     errors,
     exclude,
     language,
@@ -94,6 +99,7 @@
           new TopLevelAnalyzerOptionsValidator(),
           new StrongModeOptionValueValidator(),
           new ErrorFilterOptionValidator(),
+          new EnabledExperimentsValidator(),
           new LanguageOptionValidator()
         ]);
 }
@@ -109,6 +115,37 @@
       validators.forEach((v) => v.validate(reporter, options));
 }
 
+/// Validates `analyzer` language configuration options.
+class EnabledExperimentsValidator extends OptionsValidator {
+  ErrorBuilder builder = new ErrorBuilder(AnalyzerOptions.languageOptions);
+  ErrorBuilder trueOrFalseBuilder = new TrueOrFalseValueErrorBuilder();
+
+  @override
+  void validate(ErrorReporter reporter, YamlMap options) {
+    var analyzer = getValue(options, AnalyzerOptions.analyzer);
+    if (analyzer is YamlMap) {
+      var experimentNames =
+          getValue(analyzer, AnalyzerOptions.enableExperiment);
+      if (experimentNames is YamlList) {
+        for (var node in experimentNames.nodes) {
+          String experimentName = node.toString();
+          if (!Experiments.activeExperimentNames.contains(experimentName)) {
+            reporter.reportErrorForSpan(
+                AnalysisOptionsWarningCode.UNSUPPORTED_OPTION_WITHOUT_VALUES,
+                node.span,
+                [experimentName, AnalyzerOptions.enableExperiment]);
+          }
+        }
+      } else if (experimentNames != null) {
+        reporter.reportErrorForSpan(
+            AnalysisOptionsWarningCode.INVALID_SECTION_FORMAT,
+            experimentNames.span,
+            [AnalyzerOptions.enableExperiment]);
+      }
+    }
+  }
+}
+
 /// Builds error reports with value proposals.
 class ErrorBuilder {
   String proposal;
@@ -578,10 +615,24 @@
       var strongMode = getValue(analyzer, AnalyzerOptions.strong_mode);
       _applyStrongOptions(options, strongMode);
 
-      // Set filters.
+      // Process filters.
       var filters = getValue(analyzer, AnalyzerOptions.errors);
       _applyProcessors(options, filters);
 
+      // Process enabled experiments.
+      var experimentNames =
+          getValue(analyzer, AnalyzerOptions.enableExperiment);
+      if (experimentNames is YamlList) {
+        List<String> enabledExperiments = <String>[];
+        for (var element in experimentNames.nodes) {
+          String experimentName = _toString(element);
+          if (experimentName != null) {
+            enabledExperiments.add(experimentName);
+          }
+        }
+        options.enabledExperiments = enabledExperiments;
+      }
+
       // Process language options.
       var language = getValue(analyzer, AnalyzerOptions.language);
       _applyLanguageOptions(options, language);
@@ -661,9 +712,6 @@
       AnalysisOptionsImpl options, String feature, Object value) {
     bool boolValue = toBool(value);
     if (boolValue != null) {
-      if (feature == AnalyzerOptions.declarationCasts) {
-        options.declarationCasts = boolValue;
-      }
       if (feature == AnalyzerOptions.implicitCasts) {
         options.implicitCasts = boolValue;
       }
diff --git a/pkg/analyzer/lib/src/task/strong/ast_properties.dart b/pkg/analyzer/lib/src/task/strong/ast_properties.dart
index 7fd42485..d2fea4e 100644
--- a/pkg/analyzer/lib/src/task/strong/ast_properties.dart
+++ b/pkg/analyzer/lib/src/task/strong/ast_properties.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -6,17 +6,37 @@
 ///
 /// These properties are not public, but provided by use of back-ends such as
 /// Dart Dev Compiler.
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 
-const String _hasImplicitCasts = '_hasImplicitCasts';
-const String _implicitOperationCast = '_implicitAssignmentCast';
-const String _implicitCast = '_implicitCast';
-const String _isDynamicInvoke = '_isDynamicInvoke';
 const String _classCovariantParameters = '_classCovariantParameters';
-const String _superclassCovariantParameters = '_superclassCovariantParameters';
 const String _covariantPrivateMembers = '_covariantPrivateMembers';
+const String _hasImplicitCasts = '_hasImplicitCasts';
+const String _implicitCast = '_implicitCast';
+const String _implicitOperationCast = '_implicitAssignmentCast';
+const String _isDynamicInvoke = '_isDynamicInvoke';
+const String _superclassCovariantParameters = '_superclassCovariantParameters';
+
+/// Returns a list of parameters and method type parameters in this class
+/// declaration that need a check at runtime to ensure soundness.
+Set<Element> getClassCovariantParameters(Declaration node) {
+  return node.getProperty(_classCovariantParameters);
+}
+
+/// Gets the private setters and methods that are accessed unsafely from
+/// this compilation unit.
+///
+/// These members will require a check.
+Set<ExecutableElement> getCovariantPrivateMembers(CompilationUnit node) {
+  return node.getProperty(_covariantPrivateMembers);
+}
+
+/// If this expression has an implicit cast, returns the type it is coerced to,
+/// otherwise returns null.
+DartType getImplicitCast(Expression node) {
+  return node.getProperty<DartType>(_implicitCast);
+}
 
 /// If this expression needs an implicit cast on a subexpression that cannot be
 /// expressed anywhere else, returns the type it is coerced to.
@@ -28,10 +48,11 @@
   return node.getProperty<DartType>(_implicitOperationCast);
 }
 
-/// If this expression has an implicit cast, returns the type it is coerced to,
-/// otherwise returns null.
-DartType getImplicitCast(Expression node) {
-  return node.getProperty<DartType>(_implicitCast);
+/// Returns a list of parameters and method type parameters from mixins and
+/// superclasses of this class that need a stub method to check their type at
+/// runtime for soundness.
+Set<Element> getSuperclassCovariantParameters(Declaration node) {
+  return node.getProperty(_superclassCovariantParameters);
 }
 
 /// True if this compilation unit has any implicit casts, otherwise false.
@@ -47,59 +68,38 @@
   return node.getProperty<bool>(_isDynamicInvoke) ?? false;
 }
 
+/// Sets [getClassCovariantParameters] property for this class.
+void setClassCovariantParameters(Declaration node, Set<Element> value) {
+  node.setProperty(_classCovariantParameters, value);
+}
+
+/// Sets [getCovariantPrivateMembers] property for this compilation unit.
+void setCovariantPrivateMembers(
+    CompilationUnit node, Set<ExecutableElement> value) {
+  node.setProperty(_covariantPrivateMembers, value);
+}
+
 /// Sets [hasImplicitCasts] property for this compilation unit.
 void setHasImplicitCasts(CompilationUnit node, bool value) {
   node.setProperty(_hasImplicitCasts, value == true ? true : null);
 }
 
-/// Sets the result of [getImplicitOperationCast] for this node.
-void setImplicitOperationCast(Expression node, DartType type) {
-  node.setProperty(_implicitOperationCast, type);
-}
-
 /// Sets the result of [getImplicitCast] for this node.
 void setImplicitCast(Expression node, DartType type) {
   node.setProperty(_implicitCast, type);
 }
 
+/// Sets the result of [getImplicitOperationCast] for this node.
+void setImplicitOperationCast(Expression node, DartType type) {
+  node.setProperty(_implicitOperationCast, type);
+}
+
 /// Sets [isDynamicInvoke] property for this expression.
 void setIsDynamicInvoke(Expression node, bool value) {
   node.setProperty(_isDynamicInvoke, value == true ? true : null);
 }
 
-/// Returns a list of parameters and method type parameters in this class
-/// declaration that need a check at runtime to ensure soundness.
-Set<Element> getClassCovariantParameters(Declaration node) {
-  return node.getProperty(_classCovariantParameters);
-}
-
-/// Sets [getClassCovariantParameters] property for this class.
-void setClassCovariantParameters(Declaration node, Set<Element> value) {
-  node.setProperty(_classCovariantParameters, value);
-}
-
-/// Returns a list of parameters and method type parameters from mixins and
-/// superclasses of this class that need a stub method to check their type at
-/// runtime for soundness.
-Set<Element> getSuperclassCovariantParameters(Declaration node) {
-  return node.getProperty(_superclassCovariantParameters);
-}
-
 /// Sets [getSuperclassCovariantParameters] property for this class.
 void setSuperclassCovariantParameters(Declaration node, Set<Element> value) {
   node.setProperty(_superclassCovariantParameters, value);
 }
-
-/// Gets the private setters and methods that are accessed unsafely from
-/// this compilation unit.
-///
-/// These members will require a check.
-Set<ExecutableElement> getCovariantPrivateMembers(CompilationUnit node) {
-  return node.getProperty(_covariantPrivateMembers);
-}
-
-/// Sets [getCovariantPrivateMembers] property for this compilation unit.
-void setCovariantPrivateMembers(
-    CompilationUnit node, Set<ExecutableElement> value) {
-  node.setProperty(_covariantPrivateMembers, value);
-}
diff --git a/pkg/analyzer/lib/src/task/strong/checker.dart b/pkg/analyzer/lib/src/task/strong/checker.dart
index a830600..6dce6f6 100644
--- a/pkg/analyzer/lib/src/task/strong/checker.dart
+++ b/pkg/analyzer/lib/src/task/strong/checker.dart
@@ -6,7 +6,6 @@
 // refactored to fit into analyzer.
 import 'dart:collection';
 
-import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/ast/token.dart' show TokenType;
@@ -14,6 +13,8 @@
 import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
+import 'package:analyzer/error/error.dart';
+import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/source/error_processor.dart' show ErrorProcessor;
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/member.dart';
@@ -156,34 +157,17 @@
     checkForCast(expr, type);
   }
 
-  void checkDeclarationCast(Expression expr, DartType type) {
-    checkForCast(expr, type, isDeclarationCast: true);
-  }
-
-  void checkForCast(Expression expr, DartType type,
-      {bool isDeclarationCast = false}) {
-    if (expr is ParenthesizedExpression) {
-      checkForCast(expr.expression, type);
-    } else {
-      _checkImplicitCast(expr, type, isDeclarationCast: isDeclarationCast);
-    }
-  }
-
   /// Analyzer checks boolean conversions, but we need to check too, because
   /// it uses the default assignability rules that allow `dynamic` and `Object`
   /// to be assigned to bool with no message.
   void checkBoolean(Expression expr) =>
       checkAssignment(expr, typeProvider.boolType);
 
-  void _checkFunctionApplication(InvocationExpression node) {
-    var ft = _getTypeAsCaller(node);
-
-    if (_isDynamicCall(node, ft)) {
-      // If f is Function and this is a method invocation, we should have
-      // gotten an analyzer error, so no need to issue another error.
-      _recordDynamicInvoke(node, node.function);
+  void checkForCast(Expression expr, DartType type) {
+    if (expr is ParenthesizedExpression) {
+      checkForCast(expr.expression, type);
     } else {
-      checkArgumentList(node.argumentList, ft);
+      _checkImplicitCast(expr, type);
     }
   }
 
@@ -305,7 +289,6 @@
     }
   }
 
-  // Check invocations
   @override
   void visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
     var field = node.fieldName;
@@ -315,6 +298,7 @@
     node.visitChildren(this);
   }
 
+  // Check invocations
   @override
   void visitDefaultFormalParameter(DefaultFormalParameter node) {
     // Check that defaults have the proper subtype.
@@ -391,7 +375,7 @@
         // Insert a cast from the sequence's element type to the loop variable's
         // if needed.
         _checkImplicitCast(loopVariable, _getExpressionType(loopVariable),
-            from: elementType, isDeclarationCast: true);
+            from: elementType);
       }
     }
 
@@ -517,7 +501,9 @@
   visitMethodInvocation(MethodInvocation node) {
     var target = node.realTarget;
     var element = node.methodName.staticElement;
-    if (element == null && !typeProvider.isObjectMethod(node.methodName.name)) {
+    if (element == null &&
+        !typeProvider.isObjectMethod(node.methodName.name) &&
+        node.methodName.name != FunctionElement.CALL_METHOD_NAME) {
       _recordDynamicInvoke(node, target);
 
       // Mark the tear-off as being dynamic, too. This lets us distinguish
@@ -630,11 +616,11 @@
   void visitVariableDeclarationList(VariableDeclarationList node) {
     TypeAnnotation type = node.type;
 
-    for (VariableDeclaration variable in node.variables) {
-      var initializer = variable.initializer;
-      if (initializer != null) {
-        if (type != null) {
-          checkDeclarationCast(initializer, type.type);
+    if (type != null) {
+      for (VariableDeclaration variable in node.variables) {
+        var initializer = variable.initializer;
+        if (initializer != null) {
+          checkForCast(initializer, type.type);
         }
       }
     }
@@ -702,6 +688,49 @@
     node.visitChildren(this);
   }
 
+  void _checkFunctionApplication(InvocationExpression node) {
+    var ft = _getTypeAsCaller(node);
+
+    if (_isDynamicCall(node, ft)) {
+      // If f is Function and this is a method invocation, we should have
+      // gotten an analyzer error, so no need to issue another error.
+      _recordDynamicInvoke(node, node.function);
+    } else {
+      checkArgumentList(node.argumentList, ft);
+    }
+  }
+
+  /// Given an expression [expr] of type [fromType], returns true if an implicit
+  /// downcast is required, false if it is not, or null if the types are
+  /// unrelated.
+  bool _checkFunctionTypeCasts(
+      Expression expr, FunctionType to, DartType fromType) {
+    bool callTearoff = false;
+    FunctionType from;
+    if (fromType is FunctionType) {
+      from = fromType;
+    } else if (fromType is InterfaceType) {
+      from = rules.getCallMethodType(fromType);
+      callTearoff = true;
+    }
+    if (from == null) {
+      return null; // unrelated
+    }
+
+    if (rules.isSubtypeOf(from, to)) {
+      // Sound subtype.
+      // However we may still need cast if we have a call tearoff.
+      return callTearoff;
+    }
+
+    if (rules.isSubtypeOf(to, from)) {
+      // Assignable, but needs cast.
+      return true;
+    }
+
+    return null;
+  }
+
   /// Checks if an implicit cast of [expr] from [from] type to [to] type is
   /// needed, and if so records it.
   ///
@@ -710,76 +739,14 @@
   /// If [expr] does not require an implicit cast because it is not related to
   /// [to] or is already a subtype of it, does nothing.
   void _checkImplicitCast(Expression expr, DartType to,
-      {DartType from, bool opAssign: false, bool isDeclarationCast: false}) {
+      {DartType from, bool opAssign: false}) {
     from ??= _getExpressionType(expr);
 
-    if (_needsImplicitCast(expr, to,
-            from: from, isDeclarationCast: isDeclarationCast) ==
-        true) {
+    if (_needsImplicitCast(expr, to, from: from) == true) {
       _recordImplicitCast(expr, to, from: from, opAssign: opAssign);
     }
   }
 
-  void _checkReturnOrYield(Expression expression, AstNode node,
-      {bool yieldStar: false}) {
-    FunctionBody body = node.getAncestor((n) => n is FunctionBody);
-    var type = _getExpectedReturnType(body, yieldStar: yieldStar);
-    if (type == null) {
-      // We have a type mismatch: the async/async*/sync* modifier does
-      // not match the return or yield type.  We should have already gotten an
-      // analyzer error in this case.
-      return;
-    }
-    // TODO(vsm): Enforce void or dynamic (to void?) when expression is null.
-    if (expression != null) checkAssignment(expression, type);
-  }
-
-  void _checkRuntimeTypeCheck(AstNode node, TypeAnnotation annotation) {
-    var type = getAnnotatedType(annotation);
-    if (!rules.isGroundType(type)) {
-      _recordMessage(node, StrongModeCode.NON_GROUND_TYPE_CHECK_INFO, [type]);
-    }
-  }
-
-  void _checkUnary(Expression operand, Token op, MethodElement element) {
-    bool isIncrementAssign =
-        op.type == TokenType.PLUS_PLUS || op.type == TokenType.MINUS_MINUS;
-    if (op.isUserDefinableOperator || isIncrementAssign) {
-      if (element == null) {
-        _recordDynamicInvoke(operand.parent, operand);
-      } else if (isIncrementAssign) {
-        // For ++ and --, even if it is not dynamic, we still need to check
-        // that the user defined method accepts an `int` as the RHS.
-        //
-        // We assume Analyzer has done this already (in ErrorVerifier).
-        //
-        // However, we also need to check the return type.
-
-        // Refine the return type.
-        var functionType = element.type;
-        var rhsType = typeProvider.intType;
-        var lhsType = _getExpressionType(operand);
-        var returnType = rules.refineBinaryExpressionType(
-            lhsType, TokenType.PLUS, rhsType, functionType.returnType);
-
-        // Skip the argument check - `int` cannot be downcast.
-        //
-        // Check the return type for an implicit cast.
-        //
-        // If needed, mark the assignment to indicate a down cast when we assign
-        // back to it. So these two implicit casts are equivalent:
-        //
-        //     y = /*implicit cast*/(y + 1);
-        //     /*implicit assignment cast*/y++;
-        //
-        _checkImplicitCast(operand, lhsType, from: returnType, opAssign: true);
-      }
-    }
-  }
-
-  DartType _getExpressionType(Expression expr) =>
-      getExpressionType(expr, rules, typeProvider);
-
   /// If we're calling into [member] through the [target], we may need to
   /// insert a caller side check for soundness on the result of the expression
   /// [node].
@@ -862,57 +829,61 @@
     }
   }
 
-  /// Returns true if we can safely skip the covariance checks because [target]
-  /// has known type arguments, such as `this` `super` or a non-factory `new`.
-  ///
-  /// For example:
-  ///
-  ///     class C<T> {
-  ///       T _t;
-  ///     }
-  ///     class D<T> extends C<T> {
-  ///        method<S extends T>(T t, C<T> c) {
-  ///          // implicit cast: t as T;
-  ///          // implicit cast: c as C<T>;
-  ///
-  ///          // These do not need further checks. The type parameter `T` for
-  ///          // `this` must be the same as our `T`
-  ///          this._t = t;
-  ///          super._t = t;
-  ///          new C<T>()._t = t; // non-factory
-  ///
-  ///          // This needs further checks. The type of `c` could be `C<S>` for
-  ///          // some `S <: T`.
-  ///          c._t = t;
-  ///          // factory statically returns `C<T>`, dynamically returns `C<S>`.
-  ///          new F<T, S>()._t = t;
-  ///        }
-  ///     }
-  ///     class F<T, S extends T> extends C<T> {
-  ///       factory F() => new C<S>();
-  ///     }
-  ///
-  bool _targetHasKnownGenericTypeArguments(Expression target) {
-    return target == null || // implicit this
-        target is ThisExpression ||
-        target is SuperExpression ||
-        target is InstanceCreationExpression &&
-            target.staticElement?.isFactory == false;
+  void _checkReturnOrYield(Expression expression, AstNode node,
+      {bool yieldStar: false}) {
+    FunctionBody body = node.thisOrAncestorOfType<FunctionBody>();
+    var type = _getExpectedReturnType(body, yieldStar: yieldStar);
+    if (type == null) {
+      // We have a type mismatch: the async/async*/sync* modifier does
+      // not match the return or yield type.  We should have already gotten an
+      // analyzer error in this case.
+      return;
+    }
+    // TODO(vsm): Enforce void or dynamic (to void?) when expression is null.
+    if (expression != null) checkAssignment(expression, type);
   }
 
-  bool _isInstanceMember(ExecutableElement e) =>
-      !e.isStatic &&
-      (e is MethodElement ||
-          e is PropertyAccessorElement && e.variable is FieldElement);
+  void _checkRuntimeTypeCheck(AstNode node, TypeAnnotation annotation) {
+    var type = getAnnotatedType(annotation);
+    if (!rules.isGroundType(type)) {
+      _recordMessage(node, StrongModeCode.NON_GROUND_TYPE_CHECK_INFO, [type]);
+    }
+  }
 
-  ExecutableElement _lookUpMember(InterfaceType type, ExecutableElement e) {
-    var name = e.name;
-    var library = e.library;
-    return e is PropertyAccessorElement
-        ? (e.isGetter
-            ? type.lookUpInheritedGetter(name, library: library)
-            : type.lookUpInheritedSetter(name, library: library))
-        : type.lookUpInheritedMethod(name, library: library);
+  void _checkUnary(Expression operand, Token op, MethodElement element) {
+    bool isIncrementAssign =
+        op.type == TokenType.PLUS_PLUS || op.type == TokenType.MINUS_MINUS;
+    if (op.isUserDefinableOperator || isIncrementAssign) {
+      if (element == null) {
+        _recordDynamicInvoke(operand.parent, operand);
+      } else if (isIncrementAssign) {
+        // For ++ and --, even if it is not dynamic, we still need to check
+        // that the user defined method accepts an `int` as the RHS.
+        //
+        // We assume Analyzer has done this already (in ErrorVerifier).
+        //
+        // However, we also need to check the return type.
+
+        // Refine the return type.
+        var functionType = element.type;
+        var rhsType = typeProvider.intType;
+        var lhsType = _getExpressionType(operand);
+        var returnType = rules.refineBinaryExpressionType(
+            lhsType, TokenType.PLUS, rhsType, functionType.returnType);
+
+        // Skip the argument check - `int` cannot be downcast.
+        //
+        // Check the return type for an implicit cast.
+        //
+        // If needed, mark the assignment to indicate a down cast when we assign
+        // back to it. So these two implicit casts are equivalent:
+        //
+        //     y = /*implicit cast*/(y + 1);
+        //     /*implicit assignment cast*/y++;
+        //
+        _checkImplicitCast(operand, lhsType, from: returnType, opAssign: true);
+      }
+    }
   }
 
   /// Gets the expected return type of the given function [body], either from
@@ -971,6 +942,9 @@
     }
   }
 
+  DartType _getExpressionType(Expression expr) =>
+      getExpressionType(expr, rules, typeProvider);
+
   /// Given an expression, return its type assuming it is
   /// in the caller position of a call (that is, accounting
   /// for the possibility of a call method).  Returns null
@@ -991,35 +965,28 @@
     return ft == null;
   }
 
-  /// Given an expression [expr] of type [fromType], returns true if an implicit
-  /// downcast is required, false if it is not, or null if the types are
-  /// unrelated.
-  bool _checkFunctionTypeCasts(
-      Expression expr, FunctionType to, DartType fromType) {
-    bool callTearoff = false;
-    FunctionType from;
-    if (fromType is FunctionType) {
-      from = fromType;
-    } else if (fromType is InterfaceType) {
-      from = rules.getCallMethodType(fromType);
-      callTearoff = true;
-    }
-    if (from == null) {
-      return null; // unrelated
-    }
+  bool _isInstanceMember(ExecutableElement e) =>
+      !e.isStatic &&
+      (e is MethodElement ||
+          e is PropertyAccessorElement && e.variable is FieldElement);
 
-    if (rules.isSubtypeOf(from, to)) {
-      // Sound subtype.
-      // However we may still need cast if we have a call tearoff.
-      return callTearoff;
-    }
+  ExecutableElement _lookUpMember(InterfaceType type, ExecutableElement e) {
+    var name = e.name;
+    var library = e.library;
+    return e is PropertyAccessorElement
+        ? (e.isGetter
+            ? type.lookUpInheritedGetter(name, library: library)
+            : type.lookUpInheritedSetter(name, library: library))
+        : type.lookUpInheritedMethod(name, library: library);
+  }
 
-    if (rules.isSubtypeOf(to, from)) {
-      // Assignable, but needs cast.
-      return true;
+  void _markImplicitCast(Expression expr, DartType to, {bool opAssign: false}) {
+    if (opAssign) {
+      setImplicitOperationCast(expr, to);
+    } else {
+      setImplicitCast(expr, to);
     }
-
-    return null;
+    _hasImplicitCasts = true;
   }
 
   /// Returns true if we need an implicit cast of [expr] from [from] type to
@@ -1029,8 +996,7 @@
   /// downcast implicitly).
   ///
   /// If [from] is omitted, uses the static type of [expr]
-  bool _needsImplicitCast(Expression expr, DartType to,
-      {DartType from, bool isDeclarationCast: false}) {
+  bool _needsImplicitCast(Expression expr, DartType to, {DartType from}) {
     from ??= _getExpressionType(expr);
 
     // Void is considered Top, but may only be *explicitly* cast.
@@ -1047,7 +1013,7 @@
     }
 
     // Down cast or legal sideways cast, coercion needed.
-    if (rules.isAssignableTo(from, to, isDeclarationCast: isDeclarationCast)) {
+    if (rules.isAssignableTo(from, to)) {
       return true;
     }
 
@@ -1074,15 +1040,6 @@
     if (target != null) setIsDynamicInvoke(target, true);
   }
 
-  void _markImplicitCast(Expression expr, DartType to, {bool opAssign: false}) {
-    if (opAssign) {
-      setImplicitOperationCast(expr, to);
-    } else {
-      setImplicitCast(expr, to);
-    }
-    _hasImplicitCasts = true;
-  }
-
   /// Records an implicit cast for the [expr] from [from] to [to].
   ///
   /// This will emit the appropriate error/warning/hint message as well as mark
@@ -1109,6 +1066,9 @@
       } else if (expr is MapLiteral) {
         _recordMessage(
             expr, StrongModeCode.INVALID_CAST_LITERAL_MAP, [from, to]);
+      } else if (expr is SetLiteral) {
+        _recordMessage(
+            expr, StrongModeCode.INVALID_CAST_LITERAL_SET, [from, to]);
       } else {
         _recordMessage(
             expr, StrongModeCode.INVALID_CAST_LITERAL, [expr, from, to]);
@@ -1207,6 +1167,44 @@
     }
   }
 
+  /// Returns true if we can safely skip the covariance checks because [target]
+  /// has known type arguments, such as `this` `super` or a non-factory `new`.
+  ///
+  /// For example:
+  ///
+  ///     class C<T> {
+  ///       T _t;
+  ///     }
+  ///     class D<T> extends C<T> {
+  ///        method<S extends T>(T t, C<T> c) {
+  ///          // implicit cast: t as T;
+  ///          // implicit cast: c as C<T>;
+  ///
+  ///          // These do not need further checks. The type parameter `T` for
+  ///          // `this` must be the same as our `T`
+  ///          this._t = t;
+  ///          super._t = t;
+  ///          new C<T>()._t = t; // non-factory
+  ///
+  ///          // This needs further checks. The type of `c` could be `C<S>` for
+  ///          // some `S <: T`.
+  ///          c._t = t;
+  ///          // factory statically returns `C<T>`, dynamically returns `C<S>`.
+  ///          new F<T, S>()._t = t;
+  ///        }
+  ///     }
+  ///     class F<T, S extends T> extends C<T> {
+  ///       factory F() => new C<S>();
+  ///     }
+  ///
+  bool _targetHasKnownGenericTypeArguments(Expression target) {
+    return target == null || // implicit this
+        target is ThisExpression ||
+        target is SuperExpression ||
+        target is InstanceCreationExpression &&
+            target.staticElement?.isFactory == false;
+  }
+
   void _validateTopLevelInitializer(String name, Expression n) {
     n.accept(new _TopLevelInitializerValidator(this, name));
   }
@@ -1229,6 +1227,36 @@
     _checkForCovariantGenerics(node, element);
   }
 
+  /// Visits each member on the class [node] and calls [checkMember] with the
+  /// corresponding instance element and AST node (for error reporting).
+  ///
+  /// See also [_checkTypeMembers], which is used when the class AST node is not
+  /// available.
+  void _checkClassMembers(Declaration node,
+      void checkMember(ExecutableElement member, ClassMember location)) {
+    for (var member in _classMembers(node)) {
+      if (member is FieldDeclaration) {
+        if (member.isStatic) {
+          continue;
+        }
+        for (var variable in member.fields.variables) {
+          var element = variable.declaredElement as PropertyInducingElement;
+          checkMember(element.getter, member);
+          if (!variable.isFinal && !variable.isConst) {
+            checkMember(element.setter, member);
+          }
+        }
+      } else if (member is MethodDeclaration) {
+        if (member.isStatic) {
+          continue;
+        }
+        checkMember(member.declaredElement, member);
+      } else {
+        assert(member is ConstructorDeclaration);
+      }
+    }
+  }
+
   /// Finds implicit casts that we need on parameters and type formals to
   /// ensure soundness of covariant generics, and records them on the [node].
   ///
@@ -1273,86 +1301,24 @@
     setSuperclassCovariantParameters(node, checks);
   }
 
-  /// For each member of this class and non-overridden inherited member, we
-  /// check to see if any generic super interface permits an unsound call to the
-  /// concrete member. For example:
+  /// Visits the [type] and calls [checkMember] for each instance member.
   ///
-  /// We must check non-overridden inherited members because this class could
-  /// contain a new interface that permits unsound access to that member. In
-  /// those cases, the class is expected to insert stub that checks the type
-  /// before calling `super`. For example:
-  ///
-  ///     class C<T> {
-  ///       add(T t) {}
-  ///     }
-  ///     class D {
-  ///       add(int t) {}
-  ///     }
-  ///     class E extends D implements C<int> {
-  ///       // C<Object>.add is unsafe, and D.m is marked for a check.
-  ///       //
-  ///       // one way to implement this is to generate a stub method:
-  ///       // add(t) => super.add(t as int);
-  ///     }
-  ///
-  Set<Element> _findSuperclassCovariantChecks(ClassElement element,
-      Set<ClassElement> allCovariant, HashSet<String> seenConcreteMembers) {
-    var visited = new HashSet<ClassElement>()..add(element);
-    var superChecks = _createCovariantCheckSet();
-    var existingChecks = _createCovariantCheckSet();
-
-    void visitImmediateSuper(InterfaceType type) {
-      // For members of mixins/supertypes, check them against new interfaces,
-      // and also record any existing checks they already had.
-      var oldCovariant = _findAllGenericInterfaces(type);
-      var newCovariant = allCovariant.difference(oldCovariant);
-      if (newCovariant.isEmpty) return;
-
-      void visitSuper(InterfaceType type) {
-        var element = type.element;
-        if (visited.add(element)) {
-          var members = _getConcreteMembers(type, seenConcreteMembers);
-          _findCovariantChecks(members, newCovariant, superChecks);
-          _findCovariantChecks(members, oldCovariant, existingChecks);
-          element.mixins.reversed.forEach(visitSuper);
-          var s = element.supertype;
-          if (s != null) visitSuper(s);
-        }
-      }
-
-      visitSuper(type);
+  /// See also [_checkClassMembers], which should be used when the class AST
+  /// node is available to allow for better error locations
+  void _checkTypeMembers(
+      InterfaceType type, void checkMember(ExecutableElement member)) {
+    void checkHelper(ExecutableElement e) {
+      if (!e.isStatic) checkMember(e);
     }
 
-    element.mixins.reversed.forEach(visitImmediateSuper);
-    var s = element.supertype;
-    if (s != null) visitImmediateSuper(s);
-
-    superChecks.removeAll(existingChecks);
-    return superChecks;
+    type.methods.forEach(checkHelper);
+    type.accessors.forEach(checkHelper);
   }
 
-  /// Gets all concrete instance members declared on this type, skipping already
-  /// [seenConcreteMembers] and adding any found ones to it.
-  ///
-  /// By tracking the set of seen members, we can visit superclasses and mixins
-  /// and ultimately collect every most-derived member exposed by a given type.
-  static List<ExecutableElement> _getConcreteMembers(
-      InterfaceType type, HashSet<String> seenConcreteMembers) {
-    var members = <ExecutableElement>[];
-    for (var declaredMembers in [type.accessors, type.methods]) {
-      for (var member in declaredMembers) {
-        // We only visit each most derived concrete member.
-        // To avoid visiting an overridden superclass member, we skip members
-        // we've seen, and visit starting from the class, then mixins in
-        // reverse order, then superclasses.
-        if (!member.isStatic &&
-            !member.isAbstract &&
-            seenConcreteMembers.add(member.name)) {
-          members.add(member);
-        }
-      }
-    }
-    return members;
+  /// If node is a [ClassDeclaration] returns its members, otherwise if node is
+  /// a [ClassTypeAlias] this returns an empty list.
+  Iterable<ClassMember> _classMembers(Declaration node) {
+    return node is ClassDeclaration ? node.members : [];
   }
 
   /// Find all covariance checks on parameters/type parameters needed for
@@ -1453,6 +1419,64 @@
     });
   }
 
+  /// For each member of this class and non-overridden inherited member, we
+  /// check to see if any generic super interface permits an unsound call to the
+  /// concrete member. For example:
+  ///
+  /// We must check non-overridden inherited members because this class could
+  /// contain a new interface that permits unsound access to that member. In
+  /// those cases, the class is expected to insert stub that checks the type
+  /// before calling `super`. For example:
+  ///
+  ///     class C<T> {
+  ///       add(T t) {}
+  ///     }
+  ///     class D {
+  ///       add(int t) {}
+  ///     }
+  ///     class E extends D implements C<int> {
+  ///       // C<Object>.add is unsafe, and D.m is marked for a check.
+  ///       //
+  ///       // one way to implement this is to generate a stub method:
+  ///       // add(t) => super.add(t as int);
+  ///     }
+  ///
+  Set<Element> _findSuperclassCovariantChecks(ClassElement element,
+      Set<ClassElement> allCovariant, HashSet<String> seenConcreteMembers) {
+    var visited = new HashSet<ClassElement>()..add(element);
+    var superChecks = _createCovariantCheckSet();
+    var existingChecks = _createCovariantCheckSet();
+
+    void visitImmediateSuper(InterfaceType type) {
+      // For members of mixins/supertypes, check them against new interfaces,
+      // and also record any existing checks they already had.
+      var oldCovariant = _findAllGenericInterfaces(type);
+      var newCovariant = allCovariant.difference(oldCovariant);
+      if (newCovariant.isEmpty) return;
+
+      void visitSuper(InterfaceType type) {
+        var element = type.element;
+        if (visited.add(element)) {
+          var members = _getConcreteMembers(type, seenConcreteMembers);
+          _findCovariantChecks(members, newCovariant, superChecks);
+          _findCovariantChecks(members, oldCovariant, existingChecks);
+          element.mixins.reversed.forEach(visitSuper);
+          var s = element.supertype;
+          if (s != null) visitSuper(s);
+        }
+      }
+
+      visitSuper(type);
+    }
+
+    element.mixins.reversed.forEach(visitImmediateSuper);
+    var s = element.supertype;
+    if (s != null) visitImmediateSuper(s);
+
+    superChecks.removeAll(existingChecks);
+    return superChecks;
+  }
+
   static Set<Element> _createCovariantCheckSet() {
     return new LinkedHashSet(
         equals: _equalMemberElements, hashCode: _hashCodeMemberElements);
@@ -1468,11 +1492,6 @@
     return x == y;
   }
 
-  static int _hashCodeMemberElements(Element x) {
-    x = x is Member ? x.baseElement : x;
-    return x.hashCode;
-  }
-
   /// Find all generic interfaces that are implemented by [type], including
   /// [type] itself if it is generic.
   ///
@@ -1503,54 +1522,33 @@
     return genericSupertypes;
   }
 
-  /// Visits each member on the class [node] and calls [checkMember] with the
-  /// corresponding instance element and AST node (for error reporting).
+  /// Gets all concrete instance members declared on this type, skipping already
+  /// [seenConcreteMembers] and adding any found ones to it.
   ///
-  /// See also [_checkTypeMembers], which is used when the class AST node is not
-  /// available.
-  void _checkClassMembers(Declaration node,
-      void checkMember(ExecutableElement member, ClassMember location)) {
-    for (var member in _classMembers(node)) {
-      if (member is FieldDeclaration) {
-        if (member.isStatic) {
-          continue;
+  /// By tracking the set of seen members, we can visit superclasses and mixins
+  /// and ultimately collect every most-derived member exposed by a given type.
+  static List<ExecutableElement> _getConcreteMembers(
+      InterfaceType type, HashSet<String> seenConcreteMembers) {
+    var members = <ExecutableElement>[];
+    for (var declaredMembers in [type.accessors, type.methods]) {
+      for (var member in declaredMembers) {
+        // We only visit each most derived concrete member.
+        // To avoid visiting an overridden superclass member, we skip members
+        // we've seen, and visit starting from the class, then mixins in
+        // reverse order, then superclasses.
+        if (!member.isStatic &&
+            !member.isAbstract &&
+            seenConcreteMembers.add(member.name)) {
+          members.add(member);
         }
-        for (var variable in member.fields.variables) {
-          var element = variable.declaredElement as PropertyInducingElement;
-          checkMember(element.getter, member);
-          if (!variable.isFinal && !variable.isConst) {
-            checkMember(element.setter, member);
-          }
-        }
-      } else if (member is MethodDeclaration) {
-        if (member.isStatic) {
-          continue;
-        }
-        checkMember(member.declaredElement, member);
-      } else {
-        assert(member is ConstructorDeclaration);
       }
     }
+    return members;
   }
 
-  /// Visits the [type] and calls [checkMember] for each instance member.
-  ///
-  /// See also [_checkClassMembers], which should be used when the class AST
-  /// node is available to allow for better error locations
-  void _checkTypeMembers(
-      InterfaceType type, void checkMember(ExecutableElement member)) {
-    void checkHelper(ExecutableElement e) {
-      if (!e.isStatic) checkMember(e);
-    }
-
-    type.methods.forEach(checkHelper);
-    type.accessors.forEach(checkHelper);
-  }
-
-  /// If node is a [ClassDeclaration] returns its members, otherwise if node is
-  /// a [ClassTypeAlias] this returns an empty list.
-  Iterable<ClassMember> _classMembers(Declaration node) {
-    return node is ClassDeclaration ? node.members : [];
+  static int _hashCodeMemberElements(Element x) {
+    x = x is Member ? x.baseElement : x;
+    return x.hashCode;
   }
 }
 
diff --git a/pkg/analyzer_plugin/test/support/mock_sdk.dart b/pkg/analyzer/lib/src/test_utilities/mock_sdk.dart
similarity index 82%
rename from pkg/analyzer_plugin/test/support/mock_sdk.dart
rename to pkg/analyzer/lib/src/test_utilities/mock_sdk.dart
index f76516c4..b48d3c49 100644
--- a/pkg/analyzer_plugin/test/support/mock_sdk.dart
+++ b/pkg/analyzer/lib/src/test_utilities/mock_sdk.dart
@@ -1,9 +1,9 @@
-// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/file_system/file_system.dart' as resource;
-import 'package:analyzer/file_system/memory_file_system.dart' as resource;
+import 'package:analyzer/file_system/file_system.dart';
+import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/context/context.dart';
 import 'package:analyzer/src/generated/engine.dart' show AnalysisEngine;
@@ -11,6 +11,7 @@
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/summary/idl.dart' show PackageBundle;
 import 'package:analyzer/src/summary/summary_file_builder.dart';
+import 'package:meta/meta.dart';
 
 const String librariesContent = r'''
 const Map<String, LibraryInfo> libraries = const {
@@ -42,11 +43,10 @@
   factory Future.microtask(FutureOr<T> computation()) => null;
   factory Future.value([FutureOr<T> result]) => null;
 
-  static Future<List<T>> wait<T>(
-      Iterable<Future<T>> futures) => null;
   Future<R> then<R>(FutureOr<R> onValue(T value)) => null;
-
   Future<T> whenComplete(action());
+  
+  static Future<List<T>> wait<T>(Iterable<Future<T>> futures) => null;
 }
 
 class FutureOr<T> {}
@@ -60,12 +60,9 @@
   bool get isCompleted;
 }
 
-class _StreamIterator<T> implements StreamIterator<T> {}
-class _AsyncStarStreamController {}
-Function _asyncThenWrapperHelper(continuation) {}
-Function _asyncErrorWrapperHelper(continuation) {}
-Future _awaitHelper(
-    object, Function thenCallback, Function errorCallback, var awaiter) {}
+abstract class Timer {
+  static void run(void callback()) {}
+}
 ''', const <String, String>{
   '$sdkRoot/lib/async/stream.dart': r'''
 part of dart.async;
@@ -108,6 +105,7 @@
 library dart.collection;
 
 abstract class HashMap<K, V> implements Map<K, V> {}
+abstract class LinkedHashMap<K, V> implements Map<K, V> {}
 ''');
 
 const _MockSdkLibrary _LIB_CONVERT = const _MockSdkLibrary(
@@ -124,104 +122,34 @@
     const _MockSdkLibrary('dart:core', '$sdkRoot/lib/core/core.dart', '''
 library dart.core;
 
-import 'dart:async';
-import 'dart:_internal';
+import 'dart:async'; // ignore: unused_import
 
-class Object {
-  const Object();
-  bool operator ==(other) => identical(this, other);
-  String toString() => 'a string';
-  int get hashCode => 0;
-  Type get runtimeType => null;
-  dynamic noSuchMethod(Invocation invocation) => null;
+export 'dart:async' show Future, Stream;
+
+const deprecated = const Deprecated("next release");
+
+const override = const _Override();
+
+const proxy = const _Proxy();
+
+external bool identical(Object a, Object b);
+
+void print(Object object) {}
+
+class bool extends Object {
+  external const factory bool.fromEnvironment(String name,
+      {bool defaultValue: false});
 }
 
-class Function {}
-class StackTrace {}
-
-class Symbol {
-  const factory Symbol(String name) = _SymbolImpl;
-}
-
-class _SymbolImpl {
-  const _SymbolImpl(String name);
-}
-
-class Type {}
-
 abstract class Comparable<T> {
   int compareTo(T other);
 }
 
-abstract class Pattern {}
-abstract class String implements Comparable<String>, Pattern {
-  external factory String.fromCharCodes(Iterable<int> charCodes,
-                                        [int start = 0, int end]);
-  String operator +(String other) => null;
-  bool operator ==(Object other);
-  bool get isEmpty => false;
-  bool get isNotEmpty => false;
-  int get length => 0;
-  int codeUnitAt(int index);
-  String substring(int len) => null;
-  String toLowerCase();
-  String toUpperCase();
-  List<int> get codeUnits;
-}
-abstract class RegExp implements Pattern {
-  external factory RegExp(String source);
-}
+class DateTime extends Object {}
 
-class bool extends Object {
-  external const factory bool.fromEnvironment(String name,
-                                              {bool defaultValue: false});
-}
-
-abstract class Invocation {}
-
-abstract class num implements Comparable<num> {
-  bool operator ==(Object other);
-  bool operator <(num other);
-  bool operator <=(num other);
-  bool operator >(num other);
-  bool operator >=(num other);
-  num operator +(num other);
-  num operator -(num other);
-  num operator *(num other);
-  double operator /(num other);
-  int operator ^(int other);
-  int operator |(int other);
-  int operator <<(int other);
-  int operator >>(int other);
-  int operator ~/(num other);
-  num operator %(num other);
-  int operator ~();
-  num operator -();
-  int toInt();
-  double toDouble();
-  num abs();
-  int round();
-}
-abstract class int extends num {
-  external const factory int.fromEnvironment(String name, {int defaultValue});
-
-  bool get isNegative;
-  bool get isEven => false;
-
-  int operator &(int other);
-  int operator |(int other);
-  int operator ^(int other);
-  int operator ~();
-  int operator <<(int shiftAmount);
-  int operator >>(int shiftAmount);
-
-  int operator -();
-
-  external static int parse(String source,
-                            { int radix,
-                              int onError(String source) });
-
-  String toString();
+class Deprecated extends Object {
+  final String expires;
+  const Deprecated(this.expires);
 }
 
 abstract class double extends num {
@@ -231,89 +159,25 @@
   static const double MIN_POSITIVE = 5e-324;
   static const double MAX_FINITE = 1.7976931348623157e+308;
 
-  double remainder(num other);
+  double get sign;
+  double operator %(num other);
+  double operator *(num other);
   double operator +(num other);
   double operator -(num other);
-  double operator *(num other);
-  double operator %(num other);
-  double operator /(num other);
-  int operator ~/(num other);
   double operator -();
+  double operator /(num other);
   double abs();
-  double get sign;
-  int round();
-  int floor();
   int ceil();
-  int truncate();
-  double roundToDouble();
-  double floorToDouble();
   double ceilToDouble();
+  int floor();
+  double floorToDouble();
+  double remainder(num other);
+  int round();
+  double roundToDouble();
+  int truncate();
   double truncateToDouble();
-  external static double parse(String source,
-                               [double onError(String source)]);
-}
-
-class DateTime extends Object {}
-
-class Null extends Object {
-  factory Null._uninstantiable() => null;
-}
-
-class Deprecated extends Object {
-  final String expires;
-  const Deprecated(this.expires);
-}
-const Object deprecated = const Deprecated("next release");
-
-class Iterator<E> {
-  bool moveNext();
-  E get current;
-}
-
-abstract class Iterable<E> {
-  Iterator<E> get iterator;
-  bool get isEmpty;
-  E get first;
-  int get length;
-
-  Iterable<R> map<R>(R f(E e));
-
-  R fold<R>(R initialValue,
-      R combine(R previousValue, E element)) => null;
-
-  Iterable<T> expand<T>(Iterable<T> f(E element));
-
-  Iterable<E> where(bool test(E element));
-
-  void forEach(void f(E element));
-
-  List<E> toList();
-}
-
-class List<E> implements Iterable<E> {
-  List([int length]);
-  factory List.from(Iterable elements, {bool growable: true}) => null;
-  void add(E value) {}
-  void addAll(Iterable<E> iterable) {}
-  E operator [](int index) => null;
-  void operator []=(int index, E value) {}
-  Iterator<E> get iterator => null;
-  void clear() {}
-
-  bool get isEmpty => false;
-  E get first => null;
-  E get last => null;
-
-}
-
-class Map<K, V> extends Object {
-  Iterable<K> get keys => null;
-  int get length;
-  Iterable<V> get values;
-  V operator [](K key) => null;
-  void operator []=(K key, V value) {}
-  Map<RK, RV> cast<RK, RV>();
-  bool containsKey(Object key);
+  int operator ~/(num other);
+  external static double parse(String source, [double onError(String source)]);
 }
 
 class Duration implements Comparable<Duration> {}
@@ -322,36 +186,166 @@
   factory Exception([var message]) => null;
 }
 
-external bool identical(Object a, Object b);
+class Function {}
 
-void print(Object object) {}
+abstract class int extends num {
+  external const factory int.fromEnvironment(String name, {int defaultValue});
 
-class _Proxy { const _Proxy(); }
-const Object proxy = const _Proxy();
+  bool get isEven => false;
+  bool get isNegative;
 
-class _Override { const _Override(); }
-const Object override = const _Override();
+  int operator &(int other);
+  int operator -();
+  int operator <<(int shiftAmount);
+  int operator >>(int shiftAmount);
+  int operator ^(int other);
+  String toString();
 
-class _CompileTimeError {
-  final String _errorMsg;
-  _CompileTimeError(this._errorMsg);
+  int operator |(int other);
+
+  int operator ~();
+
+  external static int parse(String source,
+      {int radix, int onError(String source)});
 }
 
-class AbstractClassInstantiationError {
-  AbstractClassInstantiationError(String className);
+abstract class Invocation {}
+
+abstract class Iterable<E> {
+  E get first;
+  bool get isEmpty;
+  Iterator<E> get iterator;
+  int get length;
+
+  Iterable<T> expand<T>(Iterable<T> f(E element));
+
+  R fold<R>(R initialValue, R combine(R previousValue, E element)) => null;
+
+  void forEach(void f(E element));
+
+  Iterable<R> map<R>(R f(E e));
+
+  List<E> toList();
+
+  Iterable<E> where(bool test(E element));
 }
 
-class FallThroughError {
-  FallThroughError();
-  FallThroughError._create(String url, int line);
+abstract class Iterator<E> {
+  E get current;
+  bool moveNext();
 }
 
-abstract class _SyncIterable implements Iterable {}
-class _InvocationMirror {
-  _InvocationMirror._withoutType(
-      String _functionName, List<Type> _typeArguments,
-      List _positionalArguments, Map<Symbol, dynamic>_namedArguments,
-      bool _isSuperInvocation);
+class List<E> implements Iterable<E> {
+  List([int length]);
+  factory List.from(Iterable elements, {bool growable: true}) => null;
+
+  E get last => null;
+  E operator [](int index) => null;
+  void operator []=(int index, E value) {}
+
+  void add(E value) {}
+  void addAll(Iterable<E> iterable) {}
+  void clear() {}
+
+  noSuchMethod(Invocation invocation) => null;
+}
+
+class Map<K, V> {
+  Iterable<K> get keys => null;
+  int get length => 0;
+  Iterable<V> get values => null;
+  V operator [](K key) => null;
+  void operator []=(K key, V value) {}
+  Map<RK, RV> cast<RK, RV>() => null;
+  bool containsKey(Object key) => false;
+}
+
+class Null extends Object {
+  factory Null._uninstantiable() => null;
+}
+
+abstract class num implements Comparable<num> {
+  num operator %(num other);
+  num operator *(num other);
+  num operator +(num other);
+  num operator -(num other);
+  num operator -();
+  double operator /(num other);
+  bool operator <(num other);
+  int operator <<(int other);
+  bool operator <=(num other);
+  bool operator ==(Object other);
+  bool operator >(num other);
+  bool operator >=(num other);
+  int operator >>(int other);
+  int operator ^(int other);
+  num abs();
+  int round();
+  double toDouble();
+  int toInt();
+  int operator |(int other);
+  int operator ~();
+  int operator ~/(num other);
+}
+
+class Object {
+  const Object();
+  int get hashCode => 0;
+  Type get runtimeType => null;
+  bool operator ==(other) => identical(this, other);
+  dynamic noSuchMethod(Invocation invocation) => null;
+  String toString() => 'a string';
+}
+
+abstract class Pattern {}
+
+abstract class RegExp implements Pattern {
+  external factory RegExp(String source);
+}
+
+abstract class Set<E> implements Iterable<E> {
+  Set<R> cast<R>();
+}
+
+class StackTrace {}
+
+abstract class String implements Comparable<String>, Pattern {
+  external factory String.fromCharCodes(Iterable<int> charCodes,
+      [int start = 0, int end]);
+  List<int> get codeUnits;
+  bool get isEmpty => false;
+  bool get isNotEmpty => false;
+  int get length => 0;
+  String operator +(String other) => null;
+  bool operator ==(Object other);
+  int codeUnitAt(int index);
+  String substring(int len) => null;
+  String toLowerCase();
+  String toUpperCase();
+}
+
+class Symbol {
+  const factory Symbol(String name) = _SymbolImpl;
+}
+
+class Type {}
+
+class Uri {
+  static List<int> parseIPv6Address(String host, [int start = 0, int end]) {
+    return null;
+  }
+}
+
+class _Override {
+  const _Override();
+}
+
+class _Proxy {
+  const _Proxy();
+}
+
+class _SymbolImpl {
+  const _SymbolImpl(String name);
 }
 ''');
 
@@ -470,7 +464,7 @@
     "dart:math": "$sdkRoot/lib/math/math.dart"
   };
 
-  final resource.MemoryResourceProvider provider;
+  final MemoryResourceProvider resourceProvider;
 
   final Map<String, String> uriMap = {};
 
@@ -487,33 +481,30 @@
    */
   PackageBundle _bundle;
 
-  MockSdk(
-      {bool generateSummaryFiles: false,
-      resource.MemoryResourceProvider resourceProvider})
-      : provider = resourceProvider ?? new resource.MemoryResourceProvider() {
+  MockSdk({bool generateSummaryFiles: false, @required this.resourceProvider}) {
     _URI_MAP.forEach((uri, path) {
-      uriMap[uri] = provider.convertPath(path);
+      uriMap[uri] = resourceProvider.convertPath(path);
     });
 
     for (_MockSdkLibrary library in _LIBRARIES) {
-      var convertedLibrary = library._toProvider(provider);
+      var convertedLibrary = library._toProvider(resourceProvider);
       sdkLibraries.add(convertedLibrary);
     }
 
     for (_MockSdkLibrary library in sdkLibraries) {
-      provider.newFile(library.path, library.content);
+      resourceProvider.newFile(library.path, library.content);
       library.parts.forEach((String path, String content) {
-        provider.newFile(path, content);
+        resourceProvider.newFile(path, content);
       });
     }
-    provider.newFile(
-        provider.convertPath(
+    resourceProvider.newFile(
+        resourceProvider.convertPath(
             '$sdkRoot/lib/_internal/sdk_library_metadata/lib/libraries.dart'),
         librariesContent);
     if (generateSummaryFiles) {
       List<int> bytes = _computeLinkedBundleBytes();
-      provider.newFileWithBytes(
-          provider.convertPath('/lib/_internal/strong.sum'), bytes);
+      resourceProvider.newFileWithBytes(
+          resourceProvider.convertPath('/lib/_internal/strong.sum'), bytes);
     }
   }
 
@@ -536,28 +527,29 @@
 
   @override
   Source fromFileUri(Uri uri) {
-    String filePath = provider.pathContext.fromUri(uri);
-    if (!filePath.startsWith(provider.convertPath('$sdkRoot/lib/'))) {
+    String filePath = resourceProvider.pathContext.fromUri(uri);
+    if (!filePath.startsWith(resourceProvider.convertPath('$sdkRoot/lib/'))) {
       return null;
     }
     for (SdkLibrary library in sdkLibraries) {
       String libraryPath = library.path;
       if (filePath == libraryPath) {
         try {
-          resource.File file = provider.getResource(filePath);
+          File file = resourceProvider.getResource(filePath);
           Uri dartUri = Uri.parse(library.shortName);
           return file.createSource(dartUri);
         } catch (exception) {
           return null;
         }
       }
-      String libraryRootPath = provider.pathContext.dirname(libraryPath) +
-          provider.pathContext.separator;
+      String libraryRootPath =
+          resourceProvider.pathContext.dirname(libraryPath) +
+              resourceProvider.pathContext.separator;
       if (filePath.startsWith(libraryRootPath)) {
         String pathInLibrary = filePath.substring(libraryRootPath.length);
         String uriStr = '${library.shortName}/$pathInLibrary';
         try {
-          resource.File file = provider.getResource(filePath);
+          File file = resourceProvider.getResource(filePath);
           Uri dartUri = Uri.parse(uriStr);
           return file.createSource(dartUri);
         } catch (exception) {
@@ -571,8 +563,8 @@
   @override
   PackageBundle getLinkedBundle() {
     if (_bundle == null) {
-      resource.File summaryFile =
-          provider.getFile(provider.convertPath('/lib/_internal/strong.sum'));
+      File summaryFile = resourceProvider
+          .getFile(resourceProvider.convertPath('/lib/_internal/strong.sum'));
       List<int> bytes;
       if (summaryFile.exists) {
         bytes = summaryFile.readAsBytesSync();
@@ -598,7 +590,7 @@
   Source mapDartUri(String dartUri) {
     String path = uriMap[dartUri];
     if (path != null) {
-      resource.File file = provider.getResource(path);
+      File file = resourceProvider.getResource(path);
       Uri uri = new Uri(scheme: 'dart', path: dartUri.substring(5));
       return file.createSource(uri);
     }
@@ -619,14 +611,9 @@
 }
 
 class _MockSdkLibrary implements SdkLibrary {
-  @override
   final String shortName;
-
-  @override
   final String path;
-
   final String content;
-
   final Map<String, String> parts;
 
   const _MockSdkLibrary(this.shortName, this.path, this.content,
@@ -653,7 +640,7 @@
   @override
   bool get isVmLibrary => throw new UnimplementedError();
 
-  _MockSdkLibrary _toProvider(resource.MemoryResourceProvider provider) {
+  _MockSdkLibrary _toProvider(MemoryResourceProvider provider) {
     return new _MockSdkLibrary(
       shortName,
       provider.convertPath(path),
diff --git a/pkg/analyzer/lib/src/test_utilities/resource_provider_mixin.dart b/pkg/analyzer/lib/src/test_utilities/resource_provider_mixin.dart
index a24767d..b5f666d2 100644
--- a/pkg/analyzer/lib/src/test_utilities/resource_provider_mixin.dart
+++ b/pkg/analyzer/lib/src/test_utilities/resource_provider_mixin.dart
@@ -13,16 +13,14 @@
  * for manipulating the file system. The utility methods all take a posix style
  * path and convert it as appropriate for the actual platform.
  */
-class ResourceProviderMixin {
+mixin ResourceProviderMixin {
   MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
 
-  String convertPath(String path) => resourceProvider.convertPath(path);
-
   /// Convert the given [path] to be a valid import uri for this provider's path context.
   /// The URI will use forward slashes on all platforms and absolute paths on Windows
   /// will be formatted as /X:/path/file.dart
   String convertAbsolutePathToUri(String path) {
-    path = resourceProvider.convertPath(path);
+    path = convertPath(path);
 
     // On Windows, absolute import paths are not quite the same as a normal fs path.
     // C:\test.dart must be imported as one of:
@@ -38,23 +36,25 @@
     return path.replaceAll(r'\', '/');
   }
 
+  String convertPath(String path) => resourceProvider.convertPath(path);
+
   void deleteFile(String path) {
-    String convertedPath = resourceProvider.convertPath(path);
+    String convertedPath = convertPath(path);
     resourceProvider.deleteFile(convertedPath);
   }
 
   void deleteFolder(String path) {
-    String convertedPath = resourceProvider.convertPath(path);
+    String convertedPath = convertPath(path);
     resourceProvider.deleteFolder(convertedPath);
   }
 
   File getFile(String path) {
-    String convertedPath = resourceProvider.convertPath(path);
+    String convertedPath = convertPath(path);
     return resourceProvider.getFile(convertedPath);
   }
 
   Folder getFolder(String path) {
-    String convertedPath = resourceProvider.convertPath(path);
+    String convertedPath = convertPath(path);
     return resourceProvider.getFolder(convertedPath);
   }
 
@@ -70,32 +70,37 @@
           .join(part1, part2, part3, part4, part5, part6, part7, part8);
 
   void modifyFile(String path, String content) {
-    String convertedPath = resourceProvider.convertPath(path);
+    String convertedPath = convertPath(path);
     resourceProvider.modifyFile(convertedPath, content);
   }
 
   File newFile(String path, {String content = ''}) {
-    String convertedPath = resourceProvider.convertPath(path);
+    String convertedPath = convertPath(path);
     return resourceProvider.newFile(convertedPath, content);
   }
 
   File newFileWithBytes(String path, List<int> bytes) {
-    String convertedPath = resourceProvider.convertPath(path);
+    String convertedPath = convertPath(path);
     return resourceProvider.newFileWithBytes(convertedPath, bytes);
   }
 
   Folder newFolder(String path) {
-    String convertedPath = resourceProvider.convertPath(path);
+    String convertedPath = convertPath(path);
     return resourceProvider.newFolder(convertedPath);
   }
 
   File newOptionsFile(String directoryPath) {
-    return newFile(resourceProvider.pathContext
-        .join(directoryPath, ContextLocatorImpl.ANALYSIS_OPTIONS_NAME));
+    String path = join(directoryPath, ContextLocatorImpl.ANALYSIS_OPTIONS_NAME);
+    return newFile(path);
   }
 
   File newPackagesFile(String directoryPath) {
-    return newFile(resourceProvider.pathContext
-        .join(directoryPath, ContextLocatorImpl.PACKAGES_FILE_NAME));
+    String path = join(directoryPath, ContextLocatorImpl.PACKAGES_FILE_NAME);
+    return newFile(path);
+  }
+
+  Uri toUri(String path) {
+    path = convertPath(path);
+    return resourceProvider.pathContext.toUri(path);
   }
 }
diff --git a/pkg/analyzer/lib/src/workspace/basic.dart b/pkg/analyzer/lib/src/workspace/basic.dart
new file mode 100644
index 0000000..2dfddcf
--- /dev/null
+++ b/pkg/analyzer/lib/src/workspace/basic.dart
@@ -0,0 +1,85 @@
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analyzer/file_system/file_system.dart';
+import 'package:analyzer/src/context/builder.dart';
+import 'package:analyzer/src/generated/sdk.dart';
+import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/source/package_map_resolver.dart';
+import 'package:analyzer/src/summary/package_bundle_reader.dart';
+import 'package:analyzer/src/workspace/workspace.dart';
+import 'package:package_config/packages.dart';
+import 'package:path/path.dart';
+
+/**
+ * Information about a default Dart workspace.
+ */
+class BasicWorkspace extends Workspace {
+  /**
+   * The [ResourceProvider] by which paths are converted into [Resource]s.
+   */
+  final ResourceProvider provider;
+
+  /**
+   * The absolute workspace root path.
+   */
+  final String root;
+
+  final ContextBuilder _builder;
+
+  Map<String, List<Folder>> _packageMap;
+
+  Packages _packages;
+
+  BasicWorkspace._(this.provider, this.root, this._builder);
+
+  @override
+  Map<String, List<Folder>> get packageMap {
+    _packageMap ??= _builder.convertPackagesToMap(packages);
+    return _packageMap;
+  }
+
+  Packages get packages {
+    _packages ??= _builder.createPackageMap(root);
+    return _packages;
+  }
+
+  @override
+  UriResolver get packageUriResolver =>
+      new PackageMapUriResolver(provider, packageMap);
+
+  @override
+  SourceFactory createSourceFactory(DartSdk sdk, SummaryDataStore summaryData) {
+    if (summaryData != null) {
+      throw new UnsupportedError(
+          'Summary files are not supported in a basic workspace.');
+    }
+    List<UriResolver> resolvers = <UriResolver>[];
+    if (sdk != null) {
+      resolvers.add(new DartUriResolver(sdk));
+    }
+    resolvers.add(packageUriResolver);
+    resolvers.add(new ResourceUriResolver(provider));
+    return new SourceFactory(resolvers, packages, provider);
+  }
+
+  /**
+   * Find the basic workspace that contains the given [path].
+   */
+  static BasicWorkspace find(
+      ResourceProvider provider, String path, ContextBuilder builder) {
+    Context context = provider.pathContext;
+
+    // Ensure that the path is absolute and normalized.
+    if (!context.isAbsolute(path)) {
+      throw new ArgumentError('not absolute: $path');
+    }
+    path = context.normalize(path);
+    Resource resource = provider.getResource(path);
+    if (resource is File) {
+      path = resource.parent.path;
+    }
+    return new BasicWorkspace._(provider, path, builder);
+  }
+}
diff --git a/pkg/analyzer/lib/src/generated/bazel.dart b/pkg/analyzer/lib/src/workspace/bazel.dart
similarity index 85%
rename from pkg/analyzer/lib/src/generated/bazel.dart
rename to pkg/analyzer/lib/src/workspace/bazel.dart
index 68e19fb..c4e6c21 100644
--- a/pkg/analyzer/lib/src/generated/bazel.dart
+++ b/pkg/analyzer/lib/src/workspace/bazel.dart
@@ -10,9 +10,10 @@
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
-import 'package:analyzer/src/generated/workspace.dart';
+import 'package:analyzer/src/summary/package_bundle_reader.dart';
 import 'package:analyzer/src/util/uri.dart';
-import 'package:path/path.dart';
+import 'package:analyzer/src/workspace/workspace.dart';
+import 'package:path/path.dart' as path;
 
 /**
  * Instances of the class `BazelFileUriResolver` resolve `file` URI's by first
@@ -31,8 +32,8 @@
     if (!ResourceUriResolver.isFileUri(uri)) {
       return null;
     }
-    String path = fileUriToNormalizedPath(provider.pathContext, uri);
-    File file = workspace.findFile(path);
+    String filePath = fileUriToNormalizedPath(provider.pathContext, uri);
+    File file = workspace.findFile(filePath);
     if (file != null) {
       return file.createSource(actualUri ?? uri);
     }
@@ -45,7 +46,7 @@
  */
 class BazelPackageUriResolver extends UriResolver {
   final BazelWorkspace _workspace;
-  final Context _context;
+  final path.Context _context;
 
   /**
    * The cache of absolute [Uri]s to [Source]s mappings.
@@ -75,15 +76,15 @@
       String filePath = fileUriPart.replaceAll('/', _context.separator);
 
       if (packageName.indexOf('.') == -1) {
-        String path = _context.join(_workspace.root, 'third_party', 'dart',
-            packageName, 'lib', filePath);
-        File file = _workspace.findFile(path);
+        String fullFilePath = _context.join(_workspace.root, 'third_party',
+            'dart', packageName, 'lib', filePath);
+        File file = _workspace.findFile(fullFilePath);
         return file?.createSource(uri);
       } else {
         String packagePath = packageName.replaceAll('.', _context.separator);
-        String path =
+        String fullFilePath =
             _context.join(_workspace.root, packagePath, 'lib', filePath);
-        File file = _workspace.findFile(path);
+        File file = _workspace.findFile(fullFilePath);
         return file?.createSource(uri);
       }
     });
@@ -91,12 +92,12 @@
 
   @override
   Uri restoreAbsolute(Source source) {
-    Context context = _workspace.provider.pathContext;
-    String path = source.fullName;
+    path.Context context = _workspace.provider.pathContext;
+    String filePath = source.fullName;
 
-    Uri restore(String root, String path) {
-      if (root != null && context.isWithin(root, path)) {
-        String relative = context.relative(path, from: root);
+    Uri restore(String root, String filePath) {
+      if (root != null && context.isWithin(root, filePath)) {
+        String relative = context.relative(filePath, from: root);
         List<String> components = context.split(relative);
         if (components.length > 4 &&
             components[0] == 'third_party' &&
@@ -126,7 +127,7 @@
       _workspace.readonly,
       _workspace.root
     ]) {
-      Uri uri = restore(root, path);
+      Uri uri = restore(root, filePath);
       if (uri != null) {
         return uri;
       }
@@ -185,13 +186,16 @@
   UriResolver get packageUriResolver => new BazelPackageUriResolver(this);
 
   @override
-  SourceFactory createSourceFactory(DartSdk sdk) {
+  SourceFactory createSourceFactory(DartSdk sdk, SummaryDataStore summaryData) {
     List<UriResolver> resolvers = <UriResolver>[];
     if (sdk != null) {
       resolvers.add(new DartUriResolver(sdk));
     }
     resolvers.add(packageUriResolver);
     resolvers.add(new BazelFileUriResolver(this));
+    if (summaryData != null) {
+      resolvers.add(InSummaryUriResolver(provider, summaryData));
+    }
     return new SourceFactory(resolvers, null, provider);
   }
 
@@ -203,7 +207,7 @@
    * not in the workspace [root].
    */
   File findFile(String absolutePath) {
-    Context context = provider.pathContext;
+    path.Context context = provider.pathContext;
     try {
       String relative = context.relative(absolutePath, from: root);
       if (relative == '.') {
@@ -255,16 +259,12 @@
    * folder, but there is corresponding folder 'foo' in `READONLY`, i.e. the
    * corresponding readonly workspace root.
    */
-  static BazelWorkspace find(ResourceProvider provider, String path) {
-    Context context = provider.pathContext;
+  static BazelWorkspace find(ResourceProvider provider, String filePath) {
+    path.Context context = provider.pathContext;
+    assert(context.isAbsolute(filePath), 'Not an absolute path: $filePath');
+    filePath = context.normalize(filePath);
 
-    // Ensure that the path is absolute and normalized.
-    if (!context.isAbsolute(path)) {
-      throw new ArgumentError('not absolute: $path');
-    }
-    path = context.normalize(path);
-
-    Folder folder = provider.getFolder(path);
+    Folder folder = provider.getFolder(filePath);
     while (true) {
       Folder parent = folder.parent;
       if (parent == null) {
@@ -317,7 +317,7 @@
    * exists.
    */
   static String _findSymlinkPrefix(ResourceProvider provider, String root) {
-    Context context = provider.pathContext;
+    path.Context context = provider.pathContext;
     if (provider.getFolder(context.join(root, 'blaze-genfiles')).exists) {
       return 'blaze';
     }
diff --git a/pkg/analyzer/lib/src/generated/gn.dart b/pkg/analyzer/lib/src/workspace/gn.dart
similarity index 78%
rename from pkg/analyzer/lib/src/generated/gn.dart
rename to pkg/analyzer/lib/src/workspace/gn.dart
index abbed00..50731c5 100644
--- a/pkg/analyzer/lib/src/generated/gn.dart
+++ b/pkg/analyzer/lib/src/workspace/gn.dart
@@ -10,13 +10,14 @@
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
-import 'package:analyzer/src/generated/workspace.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
+import 'package:analyzer/src/summary/package_bundle_reader.dart';
 import 'package:analyzer/src/util/uri.dart';
+import 'package:analyzer/src/workspace/workspace.dart';
 import 'package:package_config/packages.dart';
 import 'package:package_config/packages_file.dart';
 import 'package:package_config/src/packages_impl.dart';
-import 'package:path/path.dart';
+import 'package:path/path.dart' as path;
 
 /**
  * Information about a Gn workspace.
@@ -70,7 +71,11 @@
       new PackageMapUriResolver(provider, packageMap);
 
   @override
-  SourceFactory createSourceFactory(DartSdk sdk) {
+  SourceFactory createSourceFactory(DartSdk sdk, SummaryDataStore summaryData) {
+    if (summaryData != null) {
+      throw new UnsupportedError(
+          'Summary files are not supported in a GN workspace.');
+    }
     List<UriResolver> resolvers = <UriResolver>[];
     if (sdk != null) {
       resolvers.add(new DartUriResolver(sdk));
@@ -81,21 +86,6 @@
   }
 
   /**
-   * Return the file with the given [absolutePath].
-   *
-   * Return `null` if the given [absolutePath] is not in the workspace [root].
-   */
-  File findFile(String absolutePath) {
-    try {
-      File writableFile = provider.getFile(absolutePath);
-      if (writableFile.exists) {
-        return writableFile;
-      }
-    } catch (_) {}
-    return null;
-  }
-
-  /**
    * Creates an alternate representation for available packages.
    */
   Map<String, List<Folder>> _convertPackagesToMap(Packages packages) {
@@ -103,8 +93,8 @@
     if (packages != null && packages != Packages.noPackages) {
       var pathContext = provider.pathContext;
       packages.asMap().forEach((String packageName, Uri uri) {
-        String path = fileUriToNormalizedPath(pathContext, uri);
-        folderMap[packageName] = [provider.getFolder(path)];
+        String filePath = fileUriToNormalizedPath(pathContext, uri);
+        folderMap[packageName] = [provider.getFolder(filePath)];
       });
     }
     return folderMap;
@@ -114,8 +104,8 @@
    * Loads the packages from the .packages file.
    */
   Packages _createPackages() {
-    Map<String, Uri> map = _packagesFilePaths.map((String path) {
-      File configFile = provider.getFile(path);
+    Map<String, Uri> map = _packagesFilePaths.map((String filePath) {
+      File configFile = provider.getFile(filePath);
       List<int> bytes = configFile.readAsBytesSync();
       return parse(bytes, configFile.toUri());
     }).reduce((mapOne, mapTwo) {
@@ -142,10 +132,10 @@
    * replacing the values in the map.
    */
   void _resolveSymbolicLinks(Map<String, Uri> map) {
-    Context pathContext = provider.pathContext;
+    path.Context pathContext = provider.pathContext;
     for (String packageName in map.keys) {
-      String path = fileUriToNormalizedPath(pathContext, map[packageName]);
-      Folder folder = provider.getFolder(path);
+      String filePath = fileUriToNormalizedPath(pathContext, map[packageName]);
+      Folder folder = provider.getFolder(filePath);
       String folderPath = _resolveSymbolicLink(folder);
       // Add a '.' so that the URI is suitable for resolving relative URI's
       // against it.
@@ -155,22 +145,18 @@
   }
 
   /**
-   * Find the GN workspace that contains the given [path].
+   * Find the GN workspace that contains the given [filePath].
    *
    * Return `null` if a workspace could not be found. For a workspace to be
    * found, both a `.jiri_root` file must be found, and at least one "packages"
-   * file must be found in [path]'s output directory.
+   * file must be found in [filePath]'s output directory.
    */
-  static GnWorkspace find(ResourceProvider provider, String path) {
-    Context context = provider.pathContext;
+  static GnWorkspace find(ResourceProvider provider, String filePath) {
+    path.Context context = provider.pathContext;
+    assert(context.isAbsolute(filePath), 'Not an absolute path: $filePath');
+    filePath = context.normalize(filePath);
 
-    // Ensure that the path is absolute and normalized.
-    if (!context.isAbsolute(path)) {
-      throw new ArgumentError('Not an absolute path: $path');
-    }
-    path = context.normalize(path);
-
-    Folder folder = provider.getFolder(path);
+    Folder folder = provider.getFolder(filePath);
     while (true) {
       Folder parent = folder.parent;
       if (parent == null) {
@@ -180,7 +166,8 @@
       // Found the .jiri_root file, must be a non-git workspace.
       if (folder.getChildAssumingFolder(_jiriRootName).exists) {
         String root = folder.path;
-        List<String> packagesFiles = _findPackagesFile(provider, root, path);
+        List<String> packagesFiles =
+            _findPackagesFile(provider, root, filePath);
         if (packagesFiles.isEmpty) {
           return null;
         }
@@ -204,10 +191,10 @@
   static List<String> _findPackagesFile(
     ResourceProvider provider,
     String root,
-    String path,
+    String filePath,
   ) {
-    Context pathContext = provider.pathContext;
-    String sourceDirectory = pathContext.relative(path, from: root);
+    path.Context pathContext = provider.pathContext;
+    String sourceDirectory = pathContext.relative(filePath, from: root);
     Folder outDirectory = _getOutDirectory(root, provider);
     if (outDirectory == null) {
       return const <String>[];
@@ -234,7 +221,7 @@
    * that file cannot be found, looks for standard output directory locations.
    */
   static Folder _getOutDirectory(String root, ResourceProvider provider) {
-    Context pathContext = provider.pathContext;
+    path.Context pathContext = provider.pathContext;
     File config = provider.getFile(pathContext.join(root, '.config'));
     if (config.exists) {
       String content = config.readAsStringSync();
@@ -242,11 +229,11 @@
           new RegExp(r'^FUCHSIA_BUILD_DIR=["\x27](.+)["\x27]$', multiLine: true)
               .firstMatch(content);
       if (match != null) {
-        String path = match.group(1);
-        if (pathContext.isRelative(path)) {
-          path = pathContext.join(root, path);
+        String buildDirPath = match.group(1);
+        if (pathContext.isRelative(buildDirPath)) {
+          buildDirPath = pathContext.join(root, buildDirPath);
         }
-        return provider.getFolder(path);
+        return provider.getFolder(buildDirPath);
       }
     }
     Folder outDirectory = provider.getFolder(pathContext.join(root, 'out'));
diff --git a/pkg/analyzer/lib/src/generated/package_build.dart b/pkg/analyzer/lib/src/workspace/package_build.dart
similarity index 80%
rename from pkg/analyzer/lib/src/generated/package_build.dart
rename to pkg/analyzer/lib/src/workspace/package_build.dart
index 8effaf9..49e0485 100644
--- a/pkg/analyzer/lib/src/generated/package_build.dart
+++ b/pkg/analyzer/lib/src/workspace/package_build.dart
@@ -11,11 +11,12 @@
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
-import 'package:analyzer/src/generated/workspace.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
+import 'package:analyzer/src/summary/package_bundle_reader.dart';
 import 'package:analyzer/src/util/uri.dart';
+import 'package:analyzer/src/workspace/workspace.dart';
 import 'package:package_config/packages.dart';
-import 'package:path/path.dart';
+import 'package:path/path.dart' as path;
 import 'package:yaml/yaml.dart';
 
 /**
@@ -35,8 +36,8 @@
     if (!ResourceUriResolver.isFileUri(uri)) {
       return null;
     }
-    String path = fileUriToNormalizedPath(provider.pathContext, uri);
-    File file = workspace.findFile(path);
+    String filePath = fileUriToNormalizedPath(provider.pathContext, uri);
+    File file = workspace.findFile(filePath);
     if (file != null) {
       return file.createSource(actualUri ?? uri);
     }
@@ -50,7 +51,7 @@
 class PackageBuildPackageUriResolver extends UriResolver {
   final PackageBuildWorkspace _workspace;
   final UriResolver _normalUriResolver;
-  final Context _context;
+  final path.Context _context;
 
   /**
    * The cache of absolute [Uri]s to [Source]s mappings.
@@ -98,12 +99,11 @@
 
   @override
   Uri restoreAbsolute(Source source) {
-    Context context = _workspace.provider.pathContext;
-    String path = source.fullName;
+    String filePath = source.fullName;
 
-    if (context.isWithin(_workspace.root, path)) {
-      String relative = context.relative(path, from: _workspace.root);
-      List<String> components = context.split(relative);
+    if (_context.isWithin(_workspace.root, filePath)) {
+      String relative = _context.relative(filePath, from: _workspace.root);
+      List<String> components = _context.split(relative);
       if (components.length > 4 &&
           components[0] == 'build' &&
           components[1] == 'generated' &&
@@ -205,9 +205,10 @@
     if (!packageMap.containsKey(packageName)) {
       return null;
     }
-    String path = context.join(
+    path.Context context = provider.pathContext;
+    String fullBuiltPath = context.join(
         root, _dartToolRootName, 'build', 'generated', packageName, builtPath);
-    return provider.getFile(path);
+    return provider.getFile(fullBuiltPath);
   }
 
   /**
@@ -217,13 +218,18 @@
    * `bin/`, `web/`, and `test/` etc can all be built as well. This method
    * exists to give a name to that prefix processing step.
    */
-  String builtPackageSourcePath(String path) {
-    assert(context.isRelative(path));
-    return context.join('lib', path);
+  String builtPackageSourcePath(String filePath) {
+    path.Context context = provider.pathContext;
+    assert(context.isRelative(filePath), 'Not a relative path: $filePath');
+    return context.join('lib', filePath);
   }
 
   @override
-  SourceFactory createSourceFactory(DartSdk sdk) {
+  SourceFactory createSourceFactory(DartSdk sdk, SummaryDataStore summaryData) {
+    if (summaryData != null) {
+      throw new UnsupportedError(
+          'Summary files are not supported in a package:build workspace.');
+    }
     List<UriResolver> resolvers = <UriResolver>[];
     if (sdk != null) {
       resolvers.add(new DartUriResolver(sdk));
@@ -234,44 +240,40 @@
   }
 
   /**
-   * Return the file with the given [path], looking first into directories for
+   * Return the file with the given [filePath], looking first into directories for
    * source files, and then in the generated directory
    * `.dart_tool/build/generated/$projectPackageName/$FILE`. The file in the
    * workspace root is returned even if it does not exist. Return `null` if the
-   * given [path] is not in the workspace [root].
+   * given [filePath] is not in the workspace [root].
    */
-  File findFile(String path) {
-    assert(context.isAbsolute(path));
+  File findFile(String filePath) {
+    path.Context context = provider.pathContext;
+    assert(context.isAbsolute(filePath), 'Not an absolute path: $filePath');
     try {
-      final String builtPath = context.relative(path, from: root);
+      final String builtPath = context.relative(filePath, from: root);
       final File file = builtFile(builtPath, projectPackageName);
 
       if (file.exists) {
         return file;
       }
 
-      return provider.getFile(path);
+      return provider.getFile(filePath);
     } catch (_) {
       return null;
     }
   }
 
   /**
-   * Find the package:build workspace that contains the given [path].
+   * Find the package:build workspace that contains the given [filePath].
    *
-   * Return `null` if the path is not in a package:build workspace.
+   * Return `null` if the filePath is not in a package:build workspace.
    */
   static PackageBuildWorkspace find(
-      ResourceProvider provider, String path, ContextBuilder builder) {
-    Context context = provider.pathContext;
-
-    // Ensure that the path is absolute and normalized.
-    if (!context.isAbsolute(path)) {
-      throw new ArgumentError('Not an absolute path: $path');
-    }
-    path = context.normalize(path);
-
-    Folder folder = provider.getFolder(path);
+      ResourceProvider provider, String filePath, ContextBuilder builder) {
+    path.Context context = provider.pathContext;
+    assert(context.isAbsolute(filePath), 'Not an absolute path: $filePath');
+    filePath = context.normalize(filePath);
+    Folder folder = provider.getFolder(filePath);
     while (true) {
       Folder parent = folder.parent;
       if (parent == null) {
diff --git a/pkg/analyzer/lib/src/generated/workspace.dart b/pkg/analyzer/lib/src/workspace/workspace.dart
similarity index 76%
rename from pkg/analyzer/lib/src/generated/workspace.dart
rename to pkg/analyzer/lib/src/workspace/workspace.dart
index c122845..efd55f8 100644
--- a/pkg/analyzer/lib/src/generated/workspace.dart
+++ b/pkg/analyzer/lib/src/workspace/workspace.dart
@@ -5,6 +5,7 @@
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/summary/package_bundle_reader.dart';
 
 /**
  * Abstract superclass of classes that provide information about the workspace
@@ -28,8 +29,8 @@
   UriResolver get packageUriResolver;
 
   /**
-   * Create the [SourceFactory] for resolving Uris to [Source]s.
-   * The [sdk] may be `null`.
+   * Create the source factory that should be used to resolve Uris to [Source]s.
+   * The [sdk] may be `null`. The [summaryData] can also be `null`.
    */
-  SourceFactory createSourceFactory(DartSdk sdk);
+  SourceFactory createSourceFactory(DartSdk sdk, SummaryDataStore summaryData);
 }
diff --git a/pkg/analyzer/pubspec.yaml b/pkg/analyzer/pubspec.yaml
index d6cd53d..62eb471 100644
--- a/pkg/analyzer/pubspec.yaml
+++ b/pkg/analyzer/pubspec.yaml
@@ -1,5 +1,5 @@
 name: analyzer
-version: 0.33.6+1-dev
+version: 0.34.0
 author: Dart Team <misc@dartlang.org>
 description: Static analyzer for Dart.
 homepage: https://github.com/dart-lang/sdk/tree/master/pkg/analyzer
@@ -11,10 +11,10 @@
   collection: ^1.10.1
   convert: ^2.0.0
   crypto: '>=1.1.1 <3.0.0'
-  front_end: 0.1.6+8
+  front_end: 0.1.7
   glob: ^1.0.3
   html: '>=0.12.0 <1.14.0'
-  kernel: 0.3.6+8
+  kernel: 0.3.7
   meta: ^1.0.2
   package_config: '>=0.1.5 <2.0.0'
   path: '>=0.9.0 <2.0.0'
diff --git a/pkg/analyzer/test/dart/ast/visitor_test.dart b/pkg/analyzer/test/dart/ast/visitor_test.dart
index f246a06..94457e0 100644
--- a/pkg/analyzer/test/dart/ast/visitor_test.dart
+++ b/pkg/analyzer/test/dart/ast/visitor_test.dart
@@ -40,7 +40,7 @@
 }''';
     CompilationUnit unit = parseCompilationUnit(source);
     List<AstNode> nodes = new List<AstNode>();
-    BreadthFirstVisitor<Object> visitor =
+    _BreadthFirstVisitorTestHelper visitor =
         new _BreadthFirstVisitorTestHelper(nodes);
     visitor.visitAllNodes(unit);
     expect(nodes, hasLength(59));
@@ -64,14 +64,14 @@
  * A helper class used to collect the nodes that were visited and to preserve
  * the order in which they were visited.
  */
-class _BreadthFirstVisitorTestHelper extends BreadthFirstVisitor<Object> {
+class _BreadthFirstVisitorTestHelper extends BreadthFirstVisitor<void> {
   List<AstNode> nodes;
 
   _BreadthFirstVisitorTestHelper(this.nodes) : super();
 
   @override
-  Object visitNode(AstNode node) {
+  void visitNode(AstNode node) {
     nodes.add(node);
-    return super.visitNode(node);
+    super.visitNode(node);
   }
 }
diff --git a/pkg/analyzer/test/dart/element/builder_test.dart b/pkg/analyzer/test/dart/element/builder_test.dart
index f460cfc..4b6a746 100644
--- a/pkg/analyzer/test/dart/element/builder_test.dart
+++ b/pkg/analyzer/test/dart/element/builder_test.dart
@@ -1207,7 +1207,7 @@
  * It is used to test the [ApiElementBuilder] itself, and its usage by
  * [ElementBuilder].
  */
-abstract class _ApiElementBuilderTestMixin {
+mixin _ApiElementBuilderTestMixin {
   CompilationUnit get compilationUnit;
 
   void set isMixinSupportEnabled(bool value);
diff --git a/pkg/analyzer/test/file_system/resource_uri_resolver_test.dart b/pkg/analyzer/test/file_system/resource_uri_resolver_test.dart
index 4bb689e..4f0a866 100644
--- a/pkg/analyzer/test/file_system/resource_uri_resolver_test.dart
+++ b/pkg/analyzer/test/file_system/resource_uri_resolver_test.dart
@@ -2,9 +2,9 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/file_system/file_system.dart';
 import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -15,36 +15,34 @@
 }
 
 @reflectiveTest
-class ResourceUriResolverTest {
-  MemoryResourceProvider provider;
+class ResourceUriResolverTest with ResourceProviderMixin {
   ResourceUriResolver resolver;
 
   void setUp() {
-    provider = new MemoryResourceProvider();
-    resolver = new ResourceUriResolver(provider);
-    provider.newFile(provider.convertPath('/test.dart'), '');
-    provider.newFolder(provider.convertPath('/folder'));
+    resolver = new ResourceUriResolver(resourceProvider);
+    newFile('/test.dart');
+    newFolder('/folder');
   }
 
   void test_creation() {
-    expect(provider, isNotNull);
+    expect(resourceProvider, isNotNull);
     expect(resolver, isNotNull);
   }
 
   void test_resolveAbsolute_file() {
-    var uri = provider.pathContext.toUri(provider.convertPath('/test.dart'));
+    var uri = toUri('/test.dart');
     Source source = resolver.resolveAbsolute(uri);
     expect(source, isNotNull);
     expect(source.exists(), isTrue);
-    expect(source.fullName, provider.convertPath('/test.dart'));
+    expect(source.fullName, convertPath('/test.dart'));
   }
 
   void test_resolveAbsolute_folder() {
-    var uri = provider.pathContext.toUri(provider.convertPath('/folder'));
+    var uri = toUri('/folder');
     Source source = resolver.resolveAbsolute(uri);
     expect(source, isNotNull);
     expect(source.exists(), isFalse);
-    expect(source.fullName, provider.convertPath('/folder'));
+    expect(source.fullName, convertPath('/folder'));
   }
 
   void test_resolveAbsolute_notFile_dartUri() {
@@ -60,7 +58,7 @@
   }
 
   void test_restoreAbsolute() {
-    var uri = provider.pathContext.toUri(provider.convertPath('/test.dart'));
+    var uri = toUri('/test.dart');
     Source source = resolver.resolveAbsolute(uri);
     expect(source, isNotNull);
     expect(resolver.restoreAbsolute(source), uri);
diff --git a/pkg/analyzer/test/generated/all_the_rest_test.dart b/pkg/analyzer/test/generated/all_the_rest_test.dart
index 4ac956a..49a4b02 100644
--- a/pkg/analyzer/test/generated/all_the_rest_test.dart
+++ b/pkg/analyzer/test/generated/all_the_rest_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -150,16 +150,14 @@
 
   void test_restoreAbsolute_library() {
     _SourceMock source = new _SourceMock();
-    Uri fileUri = resourceProvider.pathContext.toUri(coreCorePath);
-    source.uri = fileUri;
+    source.uri = toUri('/sdk/lib/core/core.dart');
     Uri dartUri = resolver.restoreAbsolute(source);
     expect(dartUri.toString(), 'dart:core');
   }
 
   void test_restoreAbsolute_part() {
     _SourceMock source = new _SourceMock();
-    Uri fileUri = resourceProvider.pathContext.toUri(coreIntPath);
-    source.uri = fileUri;
+    source.uri = toUri('/sdk/lib/core/int.dart');
     Uri dartUri = resolver.restoreAbsolute(source);
     expect(dartUri.toString(), 'dart:core/int.dart');
   }
@@ -220,7 +218,7 @@
   A.bar() {}
 }''');
     ConstructorDeclaration declaration =
-        id.getAncestor((node) => node is ConstructorDeclaration);
+        id.thisOrAncestorOfType<ConstructorDeclaration>();
     Element element = ElementLocator.locate(declaration);
     EngineTestCase.assertInstanceOf(
         (obj) => obj is ConstructorElement, ConstructorElement, element);
@@ -236,7 +234,7 @@
   test_locate_FunctionDeclaration() async {
     AstNode id = await _findNodeIn("f", "int f() => 3;");
     FunctionDeclaration declaration =
-        id.getAncestor((node) => node is FunctionDeclaration);
+        id.thisOrAncestorOfType<FunctionDeclaration>();
     Element element = ElementLocator.locate(declaration);
     EngineTestCase.assertInstanceOf(
         (obj) => obj is FunctionElement, FunctionElement, element);
@@ -397,7 +395,7 @@
   void m() {}
 }''');
     MethodDeclaration declaration =
-        id.getAncestor((node) => node is MethodDeclaration);
+        id.thisOrAncestorOfType<MethodDeclaration>();
     Element element = ElementLocator.locate(declaration);
     EngineTestCase.assertInstanceOf(
         (obj) => obj is MethodElement, MethodElement, element);
@@ -425,8 +423,7 @@
     CompilationUnit cu = await _resolveContents(code);
     int offset = code.indexOf('foo(0)');
     AstNode node = new NodeLocator(offset).searchWithin(cu);
-    MethodInvocation invocation =
-        node.getAncestor((n) => n is MethodInvocation);
+    MethodInvocation invocation = node.thisOrAncestorOfType<MethodInvocation>();
     Element element = ElementLocator.locate(invocation);
     EngineTestCase.assertInstanceOf(
         (obj) => obj is FunctionElement, FunctionElement, element);
@@ -460,7 +457,7 @@
 import 'dart:core' as core;
 core.int value;''');
     PrefixedIdentifier identifier =
-        id.getAncestor((node) => node is PrefixedIdentifier);
+        id.thisOrAncestorOfType<PrefixedIdentifier>();
     Element element = ElementLocator.locate(identifier);
     EngineTestCase.assertInstanceOf(
         (obj) => obj is ClassElement, ClassElement, element);
@@ -508,7 +505,7 @@
   test_locate_VariableDeclaration() async {
     AstNode id = await _findNodeIn("x", "var x = 'abc';");
     VariableDeclaration declaration =
-        id.getAncestor((node) => node is VariableDeclaration);
+        id.thisOrAncestorOfType<VariableDeclaration>();
     Element element = ElementLocator.locate(declaration);
     EngineTestCase.assertInstanceOf((obj) => obj is TopLevelVariableElement,
         TopLevelVariableElement, element);
@@ -2053,31 +2050,27 @@
   }
 }
 
-class _SimpleDartSdkTest extends Object with ResourceProviderMixin {
-  String coreCorePath;
-  String coreIntPath;
+class _SimpleDartSdkTest with ResourceProviderMixin {
   DartSdk sdk;
 
   void setUp() {
-    Folder sdkFolder =
-        resourceProvider.newFolder(resourceProvider.convertPath('/sdk'));
-    resourceProvider.newFile(
-        resourceProvider.convertPath(
-            '/sdk/lib/_internal/sdk_library_metadata/lib/libraries.dart'),
-        '''
+    newFile('/sdk/lib/_internal/sdk_library_metadata/lib/libraries.dart',
+        content: '''
 const Map<String, LibraryInfo> libraries = const {
   "core": const LibraryInfo("core/core.dart")
 };
 ''');
-    coreCorePath = resourceProvider.convertPath('/sdk/lib/core/core.dart');
-    resourceProvider.newFile(coreCorePath, '''
+
+    newFile('/sdk/lib/core/core.dart', content: '''
 library dart.core;
 part 'int.dart';
 ''');
-    coreIntPath = resourceProvider.convertPath('/sdk/lib/core/int.dart');
-    resourceProvider.newFile(coreIntPath, '''
+
+    newFile('/sdk/lib/core/int.dart', content: '''
 part of dart.core;
 ''');
+
+    Folder sdkFolder = newFolder('/sdk');
     sdk = new FolderBasedDartSdk(resourceProvider, sdkFolder);
   }
 }
diff --git a/pkg/analyzer/test/generated/analysis_context_factory.dart b/pkg/analyzer/test/generated/analysis_context_factory.dart
index 0226a04..1185adf 100644
--- a/pkg/analyzer/test/generated/analysis_context_factory.dart
+++ b/pkg/analyzer/test/generated/analysis_context_factory.dart
@@ -130,6 +130,7 @@
       objectClassElement,
       overrideClassElement,
       proxyClassElement,
+      provider.setType.element,
       provider.stackTraceType.element,
       provider.stringType.element,
       provider.symbolType.element,
@@ -173,13 +174,15 @@
       proxyTopLevelVariableElt
     ];
     LibraryElementImpl coreLibrary = new LibraryElementImpl.forNode(
-        coreContext, AstTestFactory.libraryIdentifier2(["dart", "core"]));
+        coreContext, null, AstTestFactory.libraryIdentifier2(["dart", "core"]));
     coreLibrary.definingCompilationUnit = coreUnit;
     //
     // dart:async
     //
     LibraryElementImpl asyncLibrary = new LibraryElementImpl.forNode(
-        coreContext, AstTestFactory.libraryIdentifier2(["dart", "async"]));
+        coreContext,
+        null,
+        AstTestFactory.libraryIdentifier2(["dart", "async"]));
     CompilationUnitElementImpl asyncUnit = new CompilationUnitElementImpl();
     Source asyncSource = sourceFactory.forUri(DartSdk.DART_ASYNC);
     coreContext.setContents(asyncSource, "");
@@ -329,7 +332,7 @@
     htmlUnit.topLevelVariables = <TopLevelVariableElement>[document];
     htmlUnit.accessors = <PropertyAccessorElement>[document.getter];
     LibraryElementImpl htmlLibrary = new LibraryElementImpl.forNode(coreContext,
-        AstTestFactory.libraryIdentifier2(["dart", "dom", "html"]));
+        null, AstTestFactory.libraryIdentifier2(["dart", "dom", "html"]));
     htmlLibrary.definingCompilationUnit = htmlUnit;
     //
     // dart:math
@@ -390,7 +393,7 @@
     ];
     mathUnit.types = <ClassElement>[randomElement];
     LibraryElementImpl mathLibrary = new LibraryElementImpl.forNode(
-        coreContext, AstTestFactory.libraryIdentifier2(["dart", "math"]));
+        coreContext, null, AstTestFactory.libraryIdentifier2(["dart", "math"]));
     mathLibrary.definingCompilationUnit = mathUnit;
     //
     // Set empty sources for the rest of the libraries.
diff --git a/pkg/analyzer/test/generated/checked_mode_compile_time_error_code_driver_test.dart b/pkg/analyzer/test/generated/checked_mode_compile_time_error_code_driver_test.dart
index b8d01e9..a21ef51 100644
--- a/pkg/analyzer/test/generated/checked_mode_compile_time_error_code_driver_test.dart
+++ b/pkg/analyzer/test/generated/checked_mode_compile_time_error_code_driver_test.dart
@@ -17,4 +17,8 @@
     extends CheckedModeCompileTimeErrorCodeTest {
   @override
   bool get enableNewAnalysisDriver => true;
+
+  test_setElementTypeNotAssignable() async {
+    await super.test_setElementTypeNotAssignable();
+  }
 }
diff --git a/pkg/analyzer/test/generated/checked_mode_compile_time_error_code_test.dart b/pkg/analyzer/test/generated/checked_mode_compile_time_error_code_test.dart
index 32623b2..52ed142 100644
--- a/pkg/analyzer/test/generated/checked_mode_compile_time_error_code_test.dart
+++ b/pkg/analyzer/test/generated/checked_mode_compile_time_error_code_test.dart
@@ -28,8 +28,7 @@
 var v = const A(3, 2);
 ''');
     await computeAnalysisResult(source);
-    assertErrors(
-        source, [CheckedModeCompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION]);
+    assertErrors(source, [CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION]);
     verify([source]);
   }
 
@@ -634,8 +633,18 @@
 }
 var v = const A.a1(0);''');
     await computeAnalysisResult(source);
-    assertErrors(
-        source, [CheckedModeCompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION]);
+    assertErrors(source, [CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION]);
+    verify([source]);
+  }
+
+  @failingTest
+  test_setElementTypeNotAssignable() async {
+    Source source = addSource("var v = const <String>{42};");
+    await computeAnalysisResult(source);
+    assertErrors(source, [
+      CheckedModeCompileTimeErrorCode.SET_ELEMENT_TYPE_NOT_ASSIGNABLE,
+      StaticWarningCode.SET_ELEMENT_TYPE_NOT_ASSIGNABLE
+    ]);
     verify([source]);
   }
 
@@ -651,8 +660,7 @@
 const f = const D('0.0');
 ''');
     await computeAnalysisResult(source);
-    assertErrors(
-        source, [CheckedModeCompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION]);
+    assertErrors(source, [CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION]);
     verify([source]);
   }
 
diff --git a/pkg/analyzer/test/generated/compile_time_error_code_driver_test.dart b/pkg/analyzer/test/generated/compile_time_error_code_driver_test.dart
index e2ad9cf..c8acd25 100644
--- a/pkg/analyzer/test/generated/compile_time_error_code_driver_test.dart
+++ b/pkg/analyzer/test/generated/compile_time_error_code_driver_test.dart
@@ -31,12 +31,6 @@
 
   @override
   @failingTest
-  test_genericFunctionTypeArgument_typedef() {
-    return super.test_genericFunctionTypeArgument_typedef();
-  }
-
-  @override
-  @failingTest
   test_invalidIdentifierInAsync_async() {
     return super.test_invalidIdentifierInAsync_async();
   }
diff --git a/pkg/analyzer/test/generated/compile_time_error_code_test.dart b/pkg/analyzer/test/generated/compile_time_error_code_test.dart
index a04cda9..1a74c98 100644
--- a/pkg/analyzer/test/generated/compile_time_error_code_test.dart
+++ b/pkg/analyzer/test/generated/compile_time_error_code_test.dart
@@ -38,8 +38,32 @@
 
   @override
   @failingTest
-  test_genericFunctionTypeArgument_typedef() {
-    return super.test_genericFunctionTypeArgument_typedef();
+  test_constSetElementTypeImplementsEquals_constField() async {
+    return super.test_constSetElementTypeImplementsEquals_constField();
+  }
+
+  @override
+  @failingTest
+  test_constSetElementTypeImplementsEquals_direct() async {
+    return super.test_constSetElementTypeImplementsEquals_direct();
+  }
+
+  @override
+  @failingTest
+  test_constSetElementTypeImplementsEquals_dynamic() async {
+    return super.test_constSetElementTypeImplementsEquals_dynamic();
+  }
+
+  @override
+  @failingTest
+  test_constSetElementTypeImplementsEquals_factory() async {
+    return super.test_constSetElementTypeImplementsEquals_factory();
+  }
+
+  @override
+  @failingTest
+  test_constSetElementTypeImplementsEquals_super() async {
+    return super.test_constSetElementTypeImplementsEquals_super();
   }
 
   @override
@@ -61,6 +85,12 @@
   }
 
   @override
+  @failingTest
+  test_invalidTypeArgumentInConstSet() async {
+    return super.test_invalidTypeArgumentInConstSet();
+  }
+
+  @override
   @failingTest // Does not work with old task model
   test_mixinInference_recursiveSubtypeCheck_new_syntax() {
     return super.test_mixinInference_recursiveSubtypeCheck_new_syntax();
@@ -74,6 +104,24 @@
 
   @override
   @failingTest
+  test_nonConstSetElement() async {
+    return super.test_nonConstSetElement();
+  }
+
+  @override
+  @failingTest
+  test_nonConstSetElementFromDeferredLibrary() async {
+    return super.test_nonConstSetElementFromDeferredLibrary();
+  }
+
+  @override
+  @failingTest
+  test_nonConstSetElementFromDeferredLibrary_nested() async {
+    return super.test_nonConstSetElementFromDeferredLibrary_nested();
+  }
+
+  @override
+  @failingTest
   test_objectCannotExtendAnotherClass() {
     return super.test_objectCannotExtendAnotherClass();
   }
@@ -1235,9 +1283,9 @@
   }
 
   test_constEvalTypeInt_binary() async {
-    await _check_constEvalTypeInt_withParameter_binary("p ^ ''");
-    await _check_constEvalTypeInt_withParameter_binary("p & ''");
-    await _check_constEvalTypeInt_withParameter_binary("p | ''");
+    await _check_constEvalTypeBoolOrInt_withParameter_binary("p ^ ''");
+    await _check_constEvalTypeBoolOrInt_withParameter_binary("p & ''");
+    await _check_constEvalTypeBoolOrInt_withParameter_binary("p | ''");
     await _check_constEvalTypeInt_withParameter_binary("p >> ''");
     await _check_constEvalTypeInt_withParameter_binary("p << ''");
   }
@@ -1439,6 +1487,100 @@
     verify([source]);
   }
 
+  test_constSetElementTypeImplementsEquals_constField() async {
+    Source source = addSource(r'''
+class A {
+  static const a = const A();
+  const A();
+  operator ==(other) => false;
+}
+main() {
+  const {A.a};
+}
+''');
+    await computeAnalysisResult(source);
+    assertErrors(source,
+        [CompileTimeErrorCode.CONST_SET_ELEMENT_TYPE_IMPLEMENTS_EQUALS]);
+    verify([source]);
+  }
+
+  test_constSetElementTypeImplementsEquals_direct() async {
+    Source source = addSource(r'''
+class A {
+  const A();
+  operator ==(other) => false;
+}
+main() {
+  const {const A()};
+}
+''');
+    await computeAnalysisResult(source);
+    assertErrors(source,
+        [CompileTimeErrorCode.CONST_SET_ELEMENT_TYPE_IMPLEMENTS_EQUALS]);
+    verify([source]);
+  }
+
+  test_constSetElementTypeImplementsEquals_dynamic() async {
+    // Note: static type of B.a is "dynamic", but actual type of the const
+    // object is A.  We need to make sure we examine the actual type when
+    // deciding whether there is a problem with operator==.
+    Source source = addSource(r'''
+class A {
+  const A();
+  operator ==(other) => false;
+}
+class B {
+  static const a = const A();
+}
+main() {
+  const {B.a};
+}
+''');
+    await computeAnalysisResult(source);
+    assertErrors(source,
+        [CompileTimeErrorCode.CONST_SET_ELEMENT_TYPE_IMPLEMENTS_EQUALS]);
+    verify([source]);
+  }
+
+  test_constSetElementTypeImplementsEquals_factory() async {
+    Source source = addSource(r'''
+class A { const factory A() = B; }
+
+class B implements A {
+  const B();
+
+  operator ==(o) => true;
+}
+
+main() {
+  var m = const {const A()};
+}
+''');
+    await computeAnalysisResult(source);
+    assertErrors(source,
+        [CompileTimeErrorCode.CONST_SET_ELEMENT_TYPE_IMPLEMENTS_EQUALS]);
+    verify([source]);
+  }
+
+  test_constSetElementTypeImplementsEquals_super() async {
+    Source source = addSource(r'''
+class A {
+  const A();
+  operator ==(other) => false;
+}
+class B extends A {
+  const B();
+}
+main() {
+  const {const B()};
+}
+''');
+    await computeAnalysisResult(source);
+    assertErrors(source,
+        [CompileTimeErrorCode.CONST_SET_ELEMENT_TYPE_IMPLEMENTS_EQUALS]);
+    verify([source]);
+  }
+
   test_constWithInvalidTypeParameters() async {
     Source source = addSource(r'''
 class A {
@@ -2406,36 +2548,6 @@
     verify([source]);
   }
 
-  test_genericFunctionTypeArgument_class() async {
-    Source source = addSource(r'''
-class C<T> {}
-C<T Function<T>(T)> c;''');
-    await computeAnalysisResult(source);
-    assertErrors(source,
-        [CompileTimeErrorCode.GENERIC_FUNCTION_CANNOT_BE_TYPE_ARGUMENT]);
-    verify([source]);
-  }
-
-  test_genericFunctionTypeArgument_function() async {
-    Source source = addSource(r'''
-T f<T>(T) => null;
-main() { f<S Function<S>(S)>(null); }''');
-    await computeAnalysisResult(source);
-    assertErrors(source,
-        [CompileTimeErrorCode.GENERIC_FUNCTION_CANNOT_BE_TYPE_ARGUMENT]);
-    verify([source]);
-  }
-
-  test_genericFunctionTypeArgument_functionType() async {
-    Source source = addSource(r'''
-T Function<T>(T) f;
-main() { f<S Function<S>(S)>(null); }''');
-    await computeAnalysisResult(source);
-    assertErrors(source,
-        [CompileTimeErrorCode.GENERIC_FUNCTION_CANNOT_BE_TYPE_ARGUMENT]);
-    verify([source]);
-  }
-
   test_genericFunctionTypeArgument_inference_function() async {
     Source source = addSource(r'''
 T f<T>(T t) => null;
@@ -2465,29 +2577,6 @@
     verify([source]);
   }
 
-  test_genericFunctionTypeArgument_method() async {
-    Source source = addSource(r'''
-class C {
-  T f<T>(T) => null;
-}
-main() { new C().f<S Function<S>(S)>(null); }''');
-    await computeAnalysisResult(source);
-    assertErrors(source,
-        [CompileTimeErrorCode.GENERIC_FUNCTION_CANNOT_BE_TYPE_ARGUMENT]);
-    verify([source]);
-  }
-
-  test_genericFunctionTypeArgument_typedef() async {
-    // TODO(mfairhurst) diagnose these parse errors to give the correct error
-    Source source = addSource(r'''
-typedef T f<T>(T t);
-final T<Function<S>(int)> x = null;''');
-    await computeAnalysisResult(source);
-    assertErrors(source,
-        [CompileTimeErrorCode.GENERIC_FUNCTION_CANNOT_BE_TYPE_ARGUMENT]);
-    verify([source]);
-  }
-
   test_genericFunctionTypeAsBound_class() async {
     Source source = addSource(r'''
 class C<T extends S Function<S>(S)> {
@@ -3670,6 +3759,19 @@
     verify([source]);
   }
 
+  test_invalidTypeArgumentInConstSet() async {
+    Source source = addSource(r'''
+class A<E> {
+  m() {
+    return const <E>{};
+  }
+}''');
+    await computeAnalysisResult(source);
+    assertErrors(
+        source, [CompileTimeErrorCode.INVALID_TYPE_ARGUMENT_IN_CONST_SET]);
+    verify([source]);
+  }
+
   test_invalidUri_export() async {
     Source source = addSource("export 'ht:';");
     await computeAnalysisResult(source);
@@ -4672,6 +4774,48 @@
     ]);
   }
 
+  test_nonConstSetElement() async {
+    Source source = addSource(r'''
+f(a) {
+  return const {a};
+}''');
+    await computeAnalysisResult(source);
+    assertErrors(source, [CompileTimeErrorCode.NON_CONSTANT_SET_ELEMENT]);
+    verify([source]);
+  }
+
+  test_nonConstSetElementFromDeferredLibrary() async {
+    await resolveWithErrors(<String>[
+      r'''
+library lib1;
+const int c = 1;''',
+      r'''
+library root;
+import 'lib1.dart' deferred as a;
+f() {
+  return const {a.c};
+}'''
+    ], [
+      CompileTimeErrorCode.NON_CONSTANT_SET_ELEMENT_FROM_DEFERRED_LIBRARY
+    ]);
+  }
+
+  test_nonConstSetElementFromDeferredLibrary_nested() async {
+    await resolveWithErrors(<String>[
+      r'''
+library lib1;
+const int c = 1;''',
+      r'''
+library root;
+import 'lib1.dart' deferred as a;
+f() {
+  return const {a.c + 1};
+}'''
+    ], [
+      CompileTimeErrorCode.NON_CONSTANT_SET_ELEMENT_FROM_DEFERRED_LIBRARY
+    ]);
+  }
+
   test_nonConstValueInInitializer_assert_condition() async {
     Source source = addSource(r'''
 class A {
@@ -4730,7 +4874,7 @@
 }''');
     await computeAnalysisResult(source);
     assertErrors(source, [
-      CompileTimeErrorCode.CONST_EVAL_TYPE_INT,
+      CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_INT,
       StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE
     ]);
     verify([source]);
@@ -5076,23 +5220,6 @@
     verify([source]);
   }
 
-  test_prefix_conditionalPropertyAccess_call() async {
-    addNamedSource('/lib.dart', '''
-library lib;
-g() {}
-''');
-    Source source = addSource('''
-import 'lib.dart' as p;
-f() {
-  p?.g();
-}
-''');
-    await computeAnalysisResult(source);
-    assertErrors(
-        source, [CompileTimeErrorCode.PREFIX_IDENTIFIER_NOT_FOLLOWED_BY_DOT]);
-    verify([source]);
-  }
-
   test_prefix_conditionalPropertyAccess_call_loadLibrary() async {
     addNamedSource('/lib.dart', '''
 library lib;
@@ -5175,36 +5302,6 @@
     verify([source]);
   }
 
-  test_prefix_unqualified_invocation_in_method() async {
-    addNamedSource('/lib.dart', 'librarylib;');
-    Source source = addSource('''
-import 'lib.dart' as p;
-class C {
-  f() {
-    p();
-  }
-}
-''');
-    await computeAnalysisResult(source);
-    assertErrors(
-        source, [CompileTimeErrorCode.PREFIX_IDENTIFIER_NOT_FOLLOWED_BY_DOT]);
-    verify([source]);
-  }
-
-  test_prefix_unqualified_invocation_not_in_method() async {
-    addNamedSource('/lib.dart', 'librarylib;');
-    Source source = addSource('''
-import 'lib.dart' as p;
-f() {
-  p();
-}
-''');
-    await computeAnalysisResult(source);
-    assertErrors(
-        source, [CompileTimeErrorCode.PREFIX_IDENTIFIER_NOT_FOLLOWED_BY_DOT]);
-    verify([source]);
-  }
-
   test_prefixCollidesWithTopLevelMembers_functionTypeAlias() async {
     addNamedSource("/lib.dart", r'''
 library lib;
@@ -5423,9 +5520,9 @@
   }
 
   test_recursiveCompileTimeConstant_fromMapLiteral() async {
-    resourceProvider.newFile(
-      resourceProvider.convertPath('/constants.dart'),
-      r'''
+    newFile(
+      '/constants.dart',
+      content: r'''
 const int x = y;
 const int y = x;
 ''',
@@ -6334,7 +6431,7 @@
     assertErrors(test, [HintCode.UNUSED_IMPORT]);
 
     // Remove the overlay in the same way as AnalysisServer.
-    resourceProvider.deleteFile(target.fullName);
+    deleteFile(target.fullName);
     if (enableNewAnalysisDriver) {
       driver.removeFile(target.fullName);
     } else {
@@ -6352,7 +6449,7 @@
     await computeAnalysisResult(source);
     assertErrors(source, [CompileTimeErrorCode.URI_DOES_NOT_EXIST]);
 
-    String targetPath = resourceProvider.convertPath('/target.dart');
+    String targetPath = convertPath('/target.dart');
     if (enableNewAnalysisDriver) {
       // Add an overlay in the same way as AnalysisServer.
       fileContentOverlay[targetPath] = '';
@@ -6617,6 +6714,21 @@
     verify([source]);
   }
 
+  Future<Null> _check_constEvalTypeBoolOrInt_withParameter_binary(
+      String expr) async {
+    Source source = addSource('''
+class A {
+  final a;
+  const A(int p) : a = $expr;
+}''');
+    await computeAnalysisResult(source);
+    assertErrors(source, [
+      CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_INT,
+      StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE
+    ]);
+    verify([source]);
+  }
+
   Future<Null> _check_constEvalTypeInt_withParameter_binary(String expr) async {
     Source source = addSource('''
 class A {
diff --git a/pkg/analyzer/test/generated/element_resolver_test.dart b/pkg/analyzer/test/generated/element_resolver_test.dart
index 75e534a..e553c30 100644
--- a/pkg/analyzer/test/generated/element_resolver_test.dart
+++ b/pkg/analyzer/test/generated/element_resolver_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -829,31 +829,6 @@
     _listener.assertNoErrors();
   }
 
-  test_visitMethodInvocation_namedParameter() async {
-    ClassElementImpl classA = ElementFactory.classElement2("A");
-    String methodName = "m";
-    String parameterName = "p";
-    MethodElementImpl method = ElementFactory.methodElement(methodName, null);
-    ParameterElement parameter = ElementFactory.namedParameter(parameterName);
-    method.parameters = <ParameterElement>[parameter];
-    classA.methods = <MethodElement>[method];
-    SimpleIdentifier left = AstTestFactory.identifier3("i");
-    left.staticType = classA.type;
-    MethodInvocation invocation = AstTestFactory.methodInvocation(
-        left, methodName, [
-      AstTestFactory.namedExpression2(parameterName, AstTestFactory.integer(0))
-    ]);
-    _resolveNode(invocation);
-    expect(invocation.methodName.staticElement, same(method));
-    expect(
-        (invocation.argumentList.arguments[0] as NamedExpression)
-            .name
-            .label
-            .staticElement,
-        same(parameter));
-    _listener.assertNoErrors();
-  }
-
   test_visitPostfixExpression() async {
     InterfaceType numType = _typeProvider.numType;
     SimpleIdentifier operand = AstTestFactory.identifier3("i");
@@ -1290,8 +1265,7 @@
 
   @override
   void setUp() {
-    AnalysisOptionsImpl options = new AnalysisOptionsImpl()
-      ..previewDart2 = true;
+    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
     resetWith(options: options);
   }
 
diff --git a/pkg/analyzer/test/generated/hint_code_test.dart b/pkg/analyzer/test/generated/hint_code_test.dart
index bcf3bad..18e26cc 100644
--- a/pkg/analyzer/test/generated/hint_code_test.dart
+++ b/pkg/analyzer/test/generated/hint_code_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -106,11 +106,7 @@
   n(void f(int i)) {}
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE]);
-    } else {
-      assertErrors(source, [HintCode.ARGUMENT_TYPE_NOT_ASSIGNABLE]);
-    }
+    assertErrors(source, [StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE]);
     verify([source]);
   }
 
@@ -129,11 +125,7 @@
 }
 n(int i) {}''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE]);
-    } else {
-      assertErrors(source, [HintCode.ARGUMENT_TYPE_NOT_ASSIGNABLE]);
-    }
+    assertErrors(source, [StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE]);
     verify([source]);
   }
 
@@ -1099,11 +1091,7 @@
   var v = (x / y).toInt();
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertNoErrors(source);
-    } else {
-      assertErrors(source, [HintCode.DIVISION_OPTIMIZATION]);
-    }
+    assertNoErrors(source);
     verify([source]);
   }
 
@@ -1395,11 +1383,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
-    } else {
-      assertErrors(source, [HintCode.INVALID_ASSIGNMENT]);
-    }
+    assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
     verify([source]);
   }
 
@@ -1411,11 +1395,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
-    } else {
-      assertErrors(source, [HintCode.INVALID_ASSIGNMENT]);
-    }
+    assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
     verify([source]);
   }
 
@@ -1437,11 +1417,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
-    } else {
-      assertErrors(source, [HintCode.INVALID_ASSIGNMENT]);
-    }
+    assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
     verify([source]);
   }
 
@@ -1461,11 +1437,7 @@
   int n = p1 + p2;
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
-    } else {
-      assertErrors(source, [HintCode.INVALID_ASSIGNMENT]);
-    }
+    assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
     verify([source]);
   }
 
@@ -3931,11 +3903,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_GETTER]);
-    } else {
-      assertErrors(source, [HintCode.UNDEFINED_GETTER]);
-    }
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_GETTER]);
   }
 
   test_undefinedIdentifier_exportHide() async {
@@ -3980,38 +3948,6 @@
     verify([source]);
   }
 
-  test_undefinedMethod() async {
-    Source source = addSource(r'''
-f() {
-  var a = 'str';
-  a.notAMethodOnString();
-}''');
-    await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_METHOD]);
-    } else {
-      assertErrors(source, [HintCode.UNDEFINED_METHOD]);
-    }
-  }
-
-  test_undefinedMethod_assignmentExpression() async {
-    Source source = addSource(r'''
-class A {}
-class B {
-  f(var a, var a2) {
-    a = new A();
-    a2 = new A();
-    a += a2;
-  }
-}''');
-    await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertNoErrors(source);
-    } else {
-      assertErrors(source, [HintCode.UNDEFINED_METHOD]);
-    }
-  }
-
   test_undefinedOperator_binaryExpression() async {
     Source source = addSource(r'''
 class A {}
@@ -4021,11 +3957,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
-    } else {
-      assertErrors(source, [HintCode.UNDEFINED_OPERATOR]);
-    }
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
   }
 
   test_undefinedOperator_indexBoth() async {
@@ -4037,11 +3969,10 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
-    } else {
-      assertErrors(source, [HintCode.UNDEFINED_OPERATOR]);
-    }
+    assertErrors(source, [
+      StaticTypeWarningCode.UNDEFINED_OPERATOR,
+      StaticTypeWarningCode.UNDEFINED_OPERATOR,
+    ]);
   }
 
   test_undefinedOperator_indexGetter() async {
@@ -4053,11 +3984,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
-    } else {
-      assertErrors(source, [HintCode.UNDEFINED_OPERATOR]);
-    }
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
   }
 
   test_undefinedOperator_indexSetter() async {
@@ -4069,11 +3996,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
-    } else {
-      assertErrors(source, [HintCode.UNDEFINED_OPERATOR]);
-    }
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
   }
 
   test_undefinedOperator_postfixExpression() async {
@@ -4085,11 +4008,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertNoErrors(source);
-    } else {
-      assertErrors(source, [HintCode.UNDEFINED_OPERATOR]);
-    }
+    assertNoErrors(source);
   }
 
   test_undefinedOperator_prefixExpression() async {
@@ -4101,11 +4020,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertNoErrors(source);
-    } else {
-      assertErrors(source, [HintCode.UNDEFINED_OPERATOR]);
-    }
+    assertNoErrors(source);
   }
 
   test_undefinedSetter() async {
@@ -4117,11 +4032,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_SETTER]);
-    } else {
-      assertErrors(source, [HintCode.UNDEFINED_SETTER]);
-    }
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_SETTER]);
   }
 
   test_unnecessaryCast_type_supertype() async {
diff --git a/pkg/analyzer/test/generated/inheritance_manager_test.dart b/pkg/analyzer/test/generated/inheritance_manager_test.dart
index fa5b0d4..d6def33 100644
--- a/pkg/analyzer/test/generated/inheritance_manager_test.dart
+++ b/pkg/analyzer/test/generated/inheritance_manager_test.dart
@@ -28,7 +28,7 @@
 }
 
 @reflectiveTest
-class InheritanceManagerTest extends Object with ResourceProviderMixin {
+class InheritanceManagerTest with ResourceProviderMixin {
   /**
    * The type provider used to access the types.
    */
diff --git a/pkg/analyzer/test/generated/non_error_resolver_driver_test.dart b/pkg/analyzer/test/generated/non_error_resolver_driver_test.dart
index c524c9c..da8d07c 100644
--- a/pkg/analyzer/test/generated/non_error_resolver_driver_test.dart
+++ b/pkg/analyzer/test/generated/non_error_resolver_driver_test.dart
@@ -31,12 +31,6 @@
 
   @override
   @failingTest
-  test_null_callMethod() {
-    return super.test_null_callMethod();
-  }
-
-  @override
-  @failingTest
   test_null_callOperator() {
     return super.test_null_callOperator();
   }
diff --git a/pkg/analyzer/test/generated/non_error_resolver_test.dart b/pkg/analyzer/test/generated/non_error_resolver_test.dart
index 25ce0a7..2b881c0 100644
--- a/pkg/analyzer/test/generated/non_error_resolver_test.dart
+++ b/pkg/analyzer/test/generated/non_error_resolver_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -16,7 +16,6 @@
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import 'resolver_test_case.dart';
-import 'test_support.dart';
 
 main() {
   defineReflectiveSuite(() {
@@ -76,12 +75,6 @@
 
   @override
   @failingTest
-  test_null_callMethod() {
-    return super.test_null_callMethod();
-  }
-
-  @override
-  @failingTest
   test_null_callOperator() {
     return super.test_null_callOperator();
   }
@@ -307,7 +300,7 @@
   }
 
   test_argumentTypeNotAssignable_optionalNew() async {
-    resetWith(options: new AnalysisOptionsImpl()..previewDart2 = true);
+    resetWith(options: new AnalysisOptionsImpl());
     Source source = addSource(r'''
 class Widget { }
 
@@ -978,220 +971,6 @@
     expect(classC.documentationComment, isNotNull);
   }
 
-  test_commentReference_beforeConstructor() async {
-    String code = r'''
-abstract class A {
-  /// [p]
-  A(int p) {}
-}''';
-    Source source = addSource(code);
-    TestAnalysisResult analysisResult = await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-    CompilationUnit unit = analysisResult.unit;
-    {
-      SimpleIdentifier ref =
-          EngineTestCase.findSimpleIdentifier(unit, code, "p]");
-      expect(ref.staticElement, new TypeMatcher<ParameterElement>());
-    }
-  }
-
-  test_commentReference_beforeEnum() async {
-    String code = r'''
-/// This is the [Samurai] kind.
-enum Samurai {
-  /// Use [int].
-  WITH_SWORD,
-  /// Like [WITH_SWORD], but only without one.
-  WITHOUT_SWORD
-}''';
-    Source source = addSource(code);
-    TestAnalysisResult analysisResult = await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-    CompilationUnit unit = analysisResult.unit;
-    {
-      SimpleIdentifier ref =
-          EngineTestCase.findSimpleIdentifier(unit, code, 'Samurai]');
-      ClassElement refElement = ref.staticElement;
-      expect(refElement, isNotNull);
-      expect(refElement.name, 'Samurai');
-    }
-    {
-      SimpleIdentifier ref =
-          EngineTestCase.findSimpleIdentifier(unit, code, 'int]');
-      ClassElement refElement = ref.staticElement;
-      expect(refElement, isNotNull);
-      expect(refElement.name, 'int');
-    }
-    {
-      SimpleIdentifier ref =
-          EngineTestCase.findSimpleIdentifier(unit, code, 'WITH_SWORD]');
-      PropertyAccessorElement refElement = ref.staticElement;
-      expect(refElement, isNotNull);
-      expect(refElement.name, 'WITH_SWORD');
-    }
-  }
-
-  test_commentReference_beforeFunction_blockBody() async {
-    String code = r'''
-/// [p]
-foo(int p) {
-}''';
-    Source source = addSource(code);
-    TestAnalysisResult analysisResult = await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-    CompilationUnit unit = analysisResult.unit;
-    SimpleIdentifier ref =
-        EngineTestCase.findSimpleIdentifier(unit, code, 'p]');
-    expect(ref.staticElement, new TypeMatcher<ParameterElement>());
-  }
-
-  test_commentReference_beforeFunction_expressionBody() async {
-    String code = r'''
-/// [p]
-foo(int p) => null;''';
-    Source source = addSource(code);
-    TestAnalysisResult analysisResult = await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-    CompilationUnit unit = analysisResult.unit;
-    SimpleIdentifier ref =
-        EngineTestCase.findSimpleIdentifier(unit, code, 'p]');
-    expect(ref.staticElement, new TypeMatcher<ParameterElement>());
-  }
-
-  test_commentReference_beforeFunctionTypeAlias() async {
-    String code = r'''
-/// [p]
-typedef Foo(int p);
-''';
-    Source source = addSource(code);
-    TestAnalysisResult analysisResult = await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-    CompilationUnit unit = analysisResult.unit;
-    SimpleIdentifier ref =
-        EngineTestCase.findSimpleIdentifier(unit, code, 'p]');
-    expect(ref.staticElement, new TypeMatcher<ParameterElement>());
-  }
-
-  test_commentReference_beforeGenericTypeAlias() async {
-    String code = r'''
-/// Can resolve [T], [S], and [p].
-typedef Foo<T> = Function<S>(int p);
-''';
-    Source source = addSource(code);
-    TestAnalysisResult analysisResult = await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-    CompilationUnit unit = analysisResult.unit;
-
-    Element getElement(String search) {
-      return EngineTestCase.findSimpleIdentifier(unit, code, search)
-          .staticElement;
-    }
-
-    expect(getElement('T]'), new TypeMatcher<TypeParameterElement>());
-    expect(getElement('S]'), new TypeMatcher<TypeParameterElement>());
-    expect(getElement('p]'), new TypeMatcher<ParameterElement>());
-  }
-
-  test_commentReference_beforeGetter() async {
-    String code = r'''
-abstract class A {
-  /// [int]
-  get g => null;
-}''';
-    Source source = addSource(code);
-    TestAnalysisResult analysisResult = await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-    CompilationUnit unit = analysisResult.unit;
-    {
-      SimpleIdentifier ref =
-          EngineTestCase.findSimpleIdentifier(unit, code, 'int]');
-      expect(ref.staticElement, isNotNull);
-    }
-  }
-
-  test_commentReference_beforeMethod() async {
-    String code = r'''
-abstract class A {
-  /// [p1]
-  ma(int p1) {}
-  /// [p2]
-  mb(int p2);
-  /// [p3] and [p4]
-  mc(int p3, p4());
-  /// [p5]
-  md(int p5, {int p6});
-}''';
-    Source source = addSource(code);
-    TestAnalysisResult analysisResult = await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-    CompilationUnit unit = analysisResult.unit;
-    assertIsParameter(String search) {
-      SimpleIdentifier ref =
-          EngineTestCase.findSimpleIdentifier(unit, code, search);
-      expect(ref.staticElement, new TypeMatcher<ParameterElement>());
-    }
-
-    assertIsParameter('p1');
-    assertIsParameter('p2');
-    assertIsParameter('p3');
-    assertIsParameter('p4');
-    assertIsParameter('p5');
-    assertIsParameter('p6');
-  }
-
-  test_commentReference_class() async {
-    String code = r'''
-/// [foo]
-class A {
-  foo() {}
-}''';
-    Source source = addSource(code);
-    TestAnalysisResult analysisResult = await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-    CompilationUnit unit = analysisResult.unit;
-    SimpleIdentifier ref =
-        EngineTestCase.findSimpleIdentifier(unit, code, 'foo]');
-    expect(ref.staticElement, new TypeMatcher<MethodElement>());
-  }
-
-  test_commentReference_setter() async {
-    String code = r'''
-class A {
-  /// [x] in A
-  mA() {}
-  set x(value) {}
-}
-class B extends A {
-  /// [x] in B
-  mB() {}
-}
-''';
-    Source source = addSource(code);
-    TestAnalysisResult analysisResult = await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-    CompilationUnit unit = analysisResult.unit;
-    {
-      SimpleIdentifier ref =
-          EngineTestCase.findSimpleIdentifier(unit, code, "x] in A");
-      expect(ref.staticElement, new TypeMatcher<PropertyAccessorElement>());
-    }
-    {
-      SimpleIdentifier ref =
-          EngineTestCase.findSimpleIdentifier(unit, code, 'x] in B');
-      expect(ref.staticElement, new TypeMatcher<PropertyAccessorElement>());
-    }
-  }
-
   test_concreteClassWithAbstractMember() async {
     Source source = addSource(r'''
 abstract class A {
@@ -2864,7 +2643,6 @@
   }
 
   test_intLiteralInDoubleContext_const_exact() async {
-    // TODO(mfairhurst): get the commented out assertions to pass.
     Source source = addSource(r'''
 class C {
   const C(double x)
@@ -3450,86 +3228,6 @@
     verify([source]);
   }
 
-  test_invocationOfNonFunction_dynamic() async {
-    Source source = addSource(r'''
-class A {
-  var f;
-}
-class B extends A {
-  g() {
-    f();
-  }
-}''');
-    await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-  }
-
-  test_invocationOfNonFunction_functionTypeTypeParameter() async {
-    Source source = addSource(r'''
-typedef void Action<T>(T x);
-class C<T, U extends Action<T>> {
-  T value;
-  U action;
-  C(this.value, [this.action]);
-  void act() {
-    action(value);
-  }
-}
-''');
-    await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-  }
-
-  test_invocationOfNonFunction_getter() async {
-    Source source = addSource(r'''
-class A {
-  var g;
-}
-f() {
-  A a;
-  a.g();
-}''');
-    await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-  }
-
-  test_invocationOfNonFunction_localVariable() async {
-    Source source = addSource(r'''
-f() {
-  var g;
-  g();
-}''');
-    await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-  }
-
-  test_invocationOfNonFunction_localVariable_dynamic() async {
-    Source source = addSource(r'''
-f() {}
-main() {
-  var v = f;
-  v();
-}''');
-    await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-  }
-
-  test_invocationOfNonFunction_Object() async {
-    Source source = addSource(r'''
-main() {
-  Object v = null;
-  v();
-}''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION]);
-    verify([source]);
-  }
-
   Future test_issue32114() async {
     addNamedSource('/a.dart', '''
 class O {}
@@ -4795,15 +4493,6 @@
     verify([source]);
   }
 
-  test_null_callMethod() async {
-    Source source = addSource(r'''
-main() {
-  null.m();
-}''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_METHOD]);
-  }
-
   test_null_callOperator() async {
     Source source = addSource(r'''
 main() {
@@ -4819,7 +4508,7 @@
   }
 
   test_optionalNew_rewrite() async {
-    resetWith(options: new AnalysisOptionsImpl()..previewDart2 = true);
+    resetWith(options: new AnalysisOptionsImpl());
     Source source = addSource(r'''
 import 'b.dart';
 main() {
@@ -4859,7 +4548,7 @@
   }
 
   test_optionalNew_rewrite_instantiatesToBounds() async {
-    resetWith(options: new AnalysisOptionsImpl()..previewDart2 = true);
+    resetWith(options: new AnalysisOptionsImpl());
     Source source = addSource(r'''
 import 'b.dart';
 
@@ -5156,6 +4845,16 @@
     verify([source]);
   }
 
+  test_regress34906() async {
+    Source source = addSource(r'''
+typedef G<X, Y extends Function(X)> = X Function(Function(Y));
+G<dynamic, Function(Null)> superBoundedG;
+''');
+    await computeAnalysisResult(source);
+    assertNoErrors(source);
+    verify([source]);
+  }
+
   test_rethrowOutsideCatch() async {
     Source source = addSource(r'''
 class A {
@@ -6078,20 +5777,6 @@
     verify([source]);
   }
 
-  test_unqualifiedReferenceToNonLocalStaticMember_fromComment_new() async {
-    Source source = addSource(r'''
-class A {
-  A() {}
-  A.named() {}
-}
-/// [new A] or [new A.named]
-main() {
-}''');
-    await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-  }
-
   test_unusedShownName_unresolved() async {
     Source source = addSource(r'''
 import 'dart:math' show max, FooBar;
diff --git a/pkg/analyzer/test/generated/non_hint_code_test.dart b/pkg/analyzer/test/generated/non_hint_code_test.dart
index b6053b6..962865a 100644
--- a/pkg/analyzer/test/generated/non_hint_code_test.dart
+++ b/pkg/analyzer/test/generated/non_hint_code_test.dart
@@ -700,14 +700,10 @@
   int c;
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(
-        source,
-        [CompileTimeErrorCode.INVALID_OVERRIDE],
-      );
-    } else {
-      assertNoErrors(source);
-    }
+    assertErrors(
+      source,
+      [CompileTimeErrorCode.INVALID_OVERRIDE],
+    );
     verify([source]);
   }
 
@@ -727,14 +723,10 @@
   int c;
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(
-        source,
-        [CompileTimeErrorCode.INVALID_OVERRIDE],
-      );
-    } else {
-      assertNoErrors(source);
-    }
+    assertErrors(
+      source,
+      [CompileTimeErrorCode.INVALID_OVERRIDE],
+    );
     verify([source]);
   }
 
@@ -943,11 +935,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_GETTER]);
-    } else {
-      assertNoErrors(source);
-    }
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_GETTER]);
   }
 
   test_undefinedMethod_assignmentExpression_inSubtype() async {
@@ -975,24 +963,6 @@
     assertNoErrors(source);
   }
 
-  test_undefinedMethod_inSubtype() async {
-    Source source = addSource(r'''
-class A {}
-class B extends A {
-  b() {}
-}
-f() {
-  var a = new A();
-  a.b();
-}''');
-    await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_METHOD]);
-    } else {
-      assertNoErrors(source);
-    }
-  }
-
   test_undefinedMethod_unionType_all() async {
     Source source = addSource(r'''
 class A {
@@ -1045,11 +1015,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
-    } else {
-      assertNoErrors(source);
-    }
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
   }
 
   test_undefinedOperator_indexBoth_inSubtype() async {
@@ -1064,11 +1030,10 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
-    } else {
-      assertNoErrors(source);
-    }
+    assertErrors(source, [
+      StaticTypeWarningCode.UNDEFINED_OPERATOR,
+      StaticTypeWarningCode.UNDEFINED_OPERATOR,
+    ]);
   }
 
   test_undefinedOperator_indexGetter_inSubtype() async {
@@ -1083,11 +1048,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
-    } else {
-      assertNoErrors(source);
-    }
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
   }
 
   test_undefinedOperator_indexSetter_inSubtype() async {
@@ -1102,11 +1063,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
-    } else {
-      assertNoErrors(source);
-    }
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
   }
 
   test_undefinedOperator_postfixExpression() async {
@@ -1151,11 +1108,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticTypeWarningCode.UNDEFINED_SETTER]);
-    } else {
-      assertNoErrors(source);
-    }
+    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_SETTER]);
   }
 
   test_unnecessaryCast_13855_parameter_A() async {
@@ -1236,7 +1189,7 @@
   (c ? f(): new Future.value(0) as Future<int>).then((int value) {});
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2 && enableNewAnalysisDriver) {
+    if (enableNewAnalysisDriver) {
       assertErrors(source, [HintCode.UNNECESSARY_CAST]);
     } else {
       assertNoErrors(source);
diff --git a/pkg/analyzer/test/generated/package_test.dart b/pkg/analyzer/test/generated/package_test.dart
deleted file mode 100644
index 1921f63..0000000
--- a/pkg/analyzer/test/generated/package_test.dart
+++ /dev/null
@@ -1,261 +0,0 @@
-// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'package:analyzer/exception/exception.dart';
-import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/package.dart';
-import 'package:analyzer/src/generated/sdk.dart';
-import 'package:analyzer/src/generated/source.dart';
-import 'package:package_config/packages.dart';
-import 'package:test/test.dart';
-import 'package:test_reflective_loader/test_reflective_loader.dart';
-
-import '../src/context/mock_sdk.dart';
-import 'resolver_test_case.dart';
-
-main() {
-  defineReflectiveSuite(() {
-    defineReflectiveTests(DependencyFinderTest);
-    defineReflectiveTests(PackageDescriptionTest);
-    defineReflectiveTests(PackageManagerTest);
-  });
-}
-
-/**
- * The name of the pubspec.yaml file.
- */
-const String pubspecName = 'pubspec.yaml';
-
-@reflectiveTest
-class DependencyFinderTest extends ResolverTestCase {
-  void test_transitiveDependenciesFor_circularDependencies() {
-    var pathContext = resourceProvider.pathContext;
-    String packageA = resourceProvider.convertPath('/pub-cache/a-1.0');
-    String packageB = resourceProvider.convertPath('/pub-cache/b-1.0');
-    String packageC = resourceProvider.convertPath('/pub-cache/c-1.0');
-    resourceProvider.newFile(pathContext.join(packageA, pubspecName), '''
-    dependencies:
-      b: any
-    ''');
-    resourceProvider.newFile(pathContext.join(packageB, pubspecName), '''
-    dependencies:
-      c: any
-    ''');
-    resourceProvider.newFile(pathContext.join(packageC, pubspecName), '''
-    dependencies:
-      a: any
-    ''');
-    Map<String, List<Folder>> packageMap = <String, List<Folder>>{
-      'a': <Folder>[resourceProvider.getFolder(packageA)],
-      'b': <Folder>[resourceProvider.getFolder(packageB)],
-      'c': <Folder>[resourceProvider.getFolder(packageC)],
-    };
-
-    DependencyFinder finder = new DependencyFinder(resourceProvider);
-    List<String> result =
-        finder.transitiveDependenciesFor(packageMap, packageA);
-    expect(result, unorderedEquals([packageB, packageC]));
-  }
-
-  void test_transitiveDependenciesFor_missingPubspec() {
-    String packagePath = resourceProvider.convertPath('/pub-cache/a-1.0');
-    Map<String, List<Folder>> packageMap = <String, List<Folder>>{
-      'a': <Folder>[resourceProvider.getFolder(packagePath)]
-    };
-
-    DependencyFinder finder = new DependencyFinder(resourceProvider);
-    expect(() => finder.transitiveDependenciesFor(packageMap, packagePath),
-        throwsA(new TypeMatcher<AnalysisException>()));
-  }
-
-  void test_transitiveDependenciesFor_noDependencies() {
-    var pathContext = resourceProvider.pathContext;
-    String packagePath = resourceProvider.convertPath('/pub-cache/a-1.0');
-    resourceProvider.newFile(pathContext.join(packagePath, pubspecName), '');
-    Map<String, List<Folder>> packageMap = <String, List<Folder>>{
-      'a': <Folder>[resourceProvider.getFolder(packagePath)]
-    };
-
-    DependencyFinder finder = new DependencyFinder(resourceProvider);
-    List<String> result =
-        finder.transitiveDependenciesFor(packageMap, packagePath);
-    expect(result, hasLength(0));
-  }
-
-  void test_transitiveDependenciesFor_overlappingDependencies() {
-    var pathContext = resourceProvider.pathContext;
-    String packageA = resourceProvider.convertPath('/pub-cache/a-1.0');
-    String packageB = resourceProvider.convertPath('/pub-cache/b-1.0');
-    String packageC = resourceProvider.convertPath('/pub-cache/c-1.0');
-    String packageD = resourceProvider.convertPath('/pub-cache/d-1.0');
-    resourceProvider.newFile(pathContext.join(packageA, pubspecName), '''
-    dependencies:
-      b: any
-      c: any
-    ''');
-    resourceProvider.newFile(pathContext.join(packageB, pubspecName), '''
-    dependencies:
-      d: any
-    ''');
-    resourceProvider.newFile(pathContext.join(packageC, pubspecName), '''
-    dependencies:
-      d: any
-    ''');
-    resourceProvider.newFile(pathContext.join(packageD, pubspecName), '');
-    Map<String, List<Folder>> packageMap = <String, List<Folder>>{
-      'a': <Folder>[resourceProvider.getFolder(packageA)],
-      'b': <Folder>[resourceProvider.getFolder(packageB)],
-      'c': <Folder>[resourceProvider.getFolder(packageC)],
-      'd': <Folder>[resourceProvider.getFolder(packageD)],
-    };
-
-    DependencyFinder finder = new DependencyFinder(resourceProvider);
-    List<String> result =
-        finder.transitiveDependenciesFor(packageMap, packageA);
-    expect(result, unorderedEquals([packageB, packageC, packageD]));
-  }
-
-  void test_transitiveDependenciesFor_simpleDependencies() {
-    var pathContext = resourceProvider.pathContext;
-    String packageA = resourceProvider.convertPath('/pub-cache/a-1.0');
-    String packageB = resourceProvider.convertPath('/pub-cache/b-1.0');
-    String packageC = resourceProvider.convertPath('/pub-cache/c-1.0');
-    resourceProvider.newFile(pathContext.join(packageA, pubspecName), '''
-    dependencies:
-      b: any
-      c: any
-    ''');
-    resourceProvider.newFile(pathContext.join(packageB, pubspecName), '');
-    resourceProvider.newFile(pathContext.join(packageC, pubspecName), '');
-    Map<String, List<Folder>> packageMap = <String, List<Folder>>{
-      'a': <Folder>[resourceProvider.getFolder(packageA)],
-      'b': <Folder>[resourceProvider.getFolder(packageB)],
-      'c': <Folder>[resourceProvider.getFolder(packageC)],
-    };
-
-    DependencyFinder finder = new DependencyFinder(resourceProvider);
-    List<String> result =
-        finder.transitiveDependenciesFor(packageMap, packageA);
-    expect(result, unorderedEquals([packageB, packageC]));
-  }
-}
-
-@reflectiveTest
-class PackageDescriptionTest extends ResolverTestCase {
-  void test_equal_false_differentOptions() {
-    String packageId = 'path1;path2';
-    DartSdk sdk = new MockSdk();
-    AnalysisOptionsImpl options1 = new AnalysisOptionsImpl();
-    AnalysisOptionsImpl options2 = new AnalysisOptionsImpl();
-    options2.enableLazyAssignmentOperators =
-        !options1.enableLazyAssignmentOperators;
-    PackageDescription first = new PackageDescription(packageId, sdk, options1);
-    PackageDescription second =
-        new PackageDescription(packageId, sdk, options2);
-    expect(first == second, isFalse);
-  }
-
-  void test_equal_false_differentPaths() {
-    String packageId1 = 'path1;path2';
-    String packageId2 = 'path1;path3';
-    DartSdk sdk = new MockSdk();
-    AnalysisOptions options = new AnalysisOptionsImpl();
-    PackageDescription first = new PackageDescription(packageId1, sdk, options);
-    PackageDescription second =
-        new PackageDescription(packageId2, sdk, options);
-    expect(first == second, isFalse);
-  }
-
-  void test_equal_false_differentSdks() {
-    String packageId = 'path1;path2';
-    DartSdk sdk1 = new MockSdk();
-    DartSdk sdk2 = new MockSdk();
-    AnalysisOptions options = new AnalysisOptionsImpl();
-    PackageDescription first = new PackageDescription(packageId, sdk1, options);
-    PackageDescription second =
-        new PackageDescription(packageId, sdk2, options);
-    expect(first == second, isFalse);
-  }
-
-  void test_equal_true() {
-    String packageId = 'path1;path2';
-    DartSdk sdk = new MockSdk();
-    AnalysisOptions options = new AnalysisOptionsImpl();
-    PackageDescription first = new PackageDescription(packageId, sdk, options);
-    PackageDescription second = new PackageDescription(packageId, sdk, options);
-    expect(first == second, isTrue);
-  }
-}
-
-@reflectiveTest
-class PackageManagerTest extends ResolverTestCase {
-  void test_getContext() {
-    var pathContext = resourceProvider.pathContext;
-    String packageA = resourceProvider.convertPath('/pub-cache/a-1.0');
-    String packageB1 = resourceProvider.convertPath('/pub-cache/b-1.0');
-    String packageB2 = resourceProvider.convertPath('/pub-cache/b-2.0');
-    String packageC = resourceProvider.convertPath('/pub-cache/c-1.0');
-    resourceProvider.newFile(pathContext.join(packageA, pubspecName), '''
-    dependencies:
-      b: any
-      c: any
-    ''');
-    resourceProvider.newFile(pathContext.join(packageB1, pubspecName), '');
-    resourceProvider.newFile(pathContext.join(packageB2, pubspecName), '');
-    resourceProvider.newFile(pathContext.join(packageC, pubspecName), '');
-
-    Packages packages1 = new _MockPackages(<String, Uri>{
-      'a': pathContext.toUri(packageA),
-      'b': pathContext.toUri(packageB1),
-      'c': pathContext.toUri(packageC),
-    });
-    DartUriResolver resolver = new DartUriResolver(new MockSdk());
-    AnalysisOptions options = new AnalysisOptionsImpl();
-    //
-    // Verify that we can compute a context for a package.
-    //
-    PackageManager manager = new PackageManager(resourceProvider);
-    AnalysisContext context1 =
-        manager.getContext(packageA, packages1, resolver, options);
-    expect(context1, isNotNull);
-    //
-    // Verify that if we have the same package map we get the same context.
-    //
-    AnalysisContext context2 =
-        manager.getContext(packageA, packages1, resolver, options);
-    expect(context2, same(context1));
-    //
-    // Verify that if we have a different package map we get a different context.
-    //
-    Packages packages3 = new _MockPackages(<String, Uri>{
-      'a': pathContext.toUri(packageA),
-      'b': pathContext.toUri(packageB2),
-      'c': pathContext.toUri(packageC),
-    });
-    AnalysisContext context3 =
-        manager.getContext(packageA, packages3, resolver, options);
-    expect(context3, isNot(same(context1)));
-  }
-}
-
-/**
- * An implementation of [Packages] used for testing.
- */
-class _MockPackages implements Packages {
-  final Map<String, Uri> map;
-
-  _MockPackages(this.map);
-
-  @override
-  Iterable<String> get packages => map.keys;
-
-  @override
-  Map<String, Uri> asMap() => map;
-
-  @override
-  Uri resolve(Uri packageUri, {Uri notFound(Uri packageUri)}) {
-    fail('Unexpected invocation of resolve');
-  }
-}
diff --git a/pkg/analyzer/test/generated/parser_fasta_test.dart b/pkg/analyzer/test/generated/parser_fasta_test.dart
index 2e121cc..055692f 100644
--- a/pkg/analyzer/test/generated/parser_fasta_test.dart
+++ b/pkg/analyzer/test/generated/parser_fasta_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -14,9 +14,9 @@
 import 'package:analyzer/src/generated/parser.dart' as analyzer;
 import 'package:analyzer/src/generated/utilities_dart.dart';
 import 'package:analyzer/src/string_source.dart';
+import 'package:front_end/src/fasta/parser/parser.dart' as fasta;
 import 'package:front_end/src/fasta/scanner.dart'
     show ScannerResult, scanString;
-import 'package:front_end/src/fasta/parser/parser.dart' as fasta;
 import 'package:front_end/src/fasta/scanner/error_token.dart' show ErrorToken;
 import 'package:front_end/src/fasta/scanner/string_scanner.dart';
 import 'package:front_end/src/scanner/errors.dart' show translateErrorToken;
@@ -190,13 +190,140 @@
     //   Actual: TokenType:<MINUS_MINUS>
     super.test_parseUnaryExpression_decrement_super_withComment();
   }
+
+  void test_mapLiteral() {
+    MapLiteral map = parseExpression('{3: 6}', parseSetLiterals: true);
+    expect(map.constKeyword, isNull);
+    expect(map.typeArguments, isNull);
+    expect(map.entries, hasLength(1));
+    MapLiteralEntry entry = map.entries[0];
+    IntegerLiteral key = entry.key;
+    expect(key.value, 3);
+    IntegerLiteral value = entry.value;
+    expect(value.value, 6);
+  }
+
+  void test_mapLiteral_const() {
+    MapLiteral map = parseExpression('const {3: 6}', parseSetLiterals: true);
+    expect(map.constKeyword, isNotNull);
+    expect(map.typeArguments, isNull);
+    expect(map.entries, hasLength(1));
+    MapLiteralEntry entry = map.entries[0];
+    IntegerLiteral key = entry.key;
+    expect(key.value, 3);
+    IntegerLiteral value = entry.value;
+    expect(value.value, 6);
+  }
+
+  void test_setLiteral() {
+    SetLiteral set = parseExpression('{3}', parseSetLiterals: true);
+    expect(set.constKeyword, isNull);
+    expect(set.typeArguments, isNull);
+    expect(set.elements, hasLength(1));
+    IntegerLiteral value = set.elements[0];
+    expect(value.value, 3);
+  }
+
+  void test_setLiteral_const() {
+    SetLiteral set = parseExpression('const {3, 6}', parseSetLiterals: true);
+    expect(set.constKeyword, isNotNull);
+    expect(set.typeArguments, isNull);
+    expect(set.elements, hasLength(2));
+    IntegerLiteral value1 = set.elements[0];
+    expect(value1.value, 3);
+    IntegerLiteral value2 = set.elements[1];
+    expect(value2.value, 6);
+  }
+
+  void test_setLiteral_const_typeArgument() {
+    SetLiteral set = parseExpression('const <int>{3}', parseSetLiterals: true);
+    expect(set.constKeyword, isNotNull);
+    expect(set.typeArguments.arguments, hasLength(1));
+    NamedType typeArg = set.typeArguments.arguments[0];
+    expect(typeArg.name.name, 'int');
+    expect(set.elements.length, 1);
+    IntegerLiteral value = set.elements[0];
+    expect(value.value, 3);
+  }
+
+  void test_setLiteral_invalid_map_entry() {
+    parseExpression('<int>{1: 1}', parseSetLiterals: true, errors: [
+      expectedError(ParserErrorCode.EXPECTED_TOKEN, 7, 1),
+    ]);
+  }
+
+  @failingTest
+  void test_setLiteral_invalid_too_many_type_arguments1() {
+    parseExpression('<int, int, int>{}', parseSetLiterals: true, errors: [
+      // TODO(danrubel): Currently the resolver reports invalid number of
+      // type arguments, but the parser could report this.
+      expectedError(
+          /* ParserErrorCode.EXPECTED_ONE_TYPE_VARIABLE */
+          ParserErrorCode.EXPECTED_TOKEN,
+          15,
+          1),
+    ]);
+  }
+
+  @failingTest
+  void test_setLiteral_invalid_too_many_type_arguments2() {
+    parseExpression('<int, int, int>{1}', parseSetLiterals: true, errors: [
+      // TODO(danrubel): Currently the resolver reports invalid number of
+      // type arguments, but the parser could report this.
+      expectedError(
+          /* ParserErrorCode.EXPECTED_ONE_TYPE_VARIABLE */
+          ParserErrorCode.EXPECTED_TOKEN,
+          15,
+          1),
+    ]);
+  }
+
+  @failingTest
+  void test_setLiteral_invalid_too_many_type_arguments3() {
+    parseExpression('<int, int>{1}', parseSetLiterals: true, errors: [
+      // TODO(danrubel): Currently the resolver reports invalid number of
+      // type arguments, but the parser could report this.
+      expectedError(
+          /* ParserErrorCode.EXPECTED_ONE_TYPE_VARIABLE */
+          ParserErrorCode.EXPECTED_TOKEN,
+          10,
+          1),
+    ]);
+  }
+
+  void test_setLiteral_nested_typeArgument() {
+    SetLiteral set = parseExpression('<Set<int>>{{3}}', parseSetLiterals: true);
+    expect(set.constKeyword, isNull);
+    expect(set.typeArguments.arguments, hasLength(1));
+    NamedType typeArg1 = set.typeArguments.arguments[0];
+    expect(typeArg1.name.name, 'Set');
+    expect(typeArg1.typeArguments.arguments, hasLength(1));
+    NamedType typeArg2 = typeArg1.typeArguments.arguments[0];
+    expect(typeArg2.name.name, 'int');
+    expect(set.elements.length, 1);
+    SetLiteral intSet = set.elements[0];
+    expect(intSet.elements, hasLength(1));
+    IntegerLiteral value = intSet.elements[0];
+    expect(value.value, 3);
+  }
+
+  void test_setLiteral_typeArgument() {
+    SetLiteral set = parseExpression('<int>{3}', parseSetLiterals: true);
+    expect(set.constKeyword, isNull);
+    expect(set.typeArguments.arguments, hasLength(1));
+    NamedType typeArg = set.typeArguments.arguments[0];
+    expect(typeArg.name.name, 'int');
+    expect(set.elements.length, 1);
+    IntegerLiteral value = set.elements[0];
+    expect(value.value, 3);
+  }
 }
 
 /**
  * Implementation of [AbstractParserTestCase] specialized for testing the
  * Fasta parser.
  */
-class FastaParserTestCase extends Object
+class FastaParserTestCase
     with ParserTestHelpers
     implements AbstractParserTestCase {
   static final List<ErrorCode> NO_ERROR_COMPARISON = <ErrorCode>[];
@@ -446,8 +573,10 @@
   Expression parseExpression(String source,
       {List<ErrorCode> codes,
       List<ExpectedError> errors,
-      int expectedEndOffset}) {
+      int expectedEndOffset,
+      bool parseSetLiterals = false}) {
     createParser(source, expectedEndOffset: expectedEndOffset);
+    _parserProxy.fastaParser.parseSetLiterals = parseSetLiterals;
     Expression result = _parserProxy.parseExpression2();
     assertErrors(codes: codes, errors: errors);
     return result;
@@ -900,6 +1029,15 @@
 @reflectiveTest
 class RecoveryParserTest_Fasta extends FastaParserTestCase
     with RecoveryParserTestMixin {
+  @override
+  void test_equalityExpression_precedence_relational_right() {
+    parseExpression("== is", codes: [
+      ParserErrorCode.EXPECTED_TYPE_NAME,
+      ParserErrorCode.MISSING_IDENTIFIER,
+      ParserErrorCode.MISSING_IDENTIFIER
+    ]);
+  }
+
   void test_invalidTypeParameters_super() {
     parseCompilationUnit('class C<X super Y> {}', errors: [
       // TODO(danrubel): Improve recovery.
@@ -916,15 +1054,6 @@
   }
 
   @override
-  void test_equalityExpression_precedence_relational_right() {
-    parseExpression("== is", codes: [
-      ParserErrorCode.EXPECTED_TYPE_NAME,
-      ParserErrorCode.MISSING_IDENTIFIER,
-      ParserErrorCode.MISSING_IDENTIFIER
-    ]);
-  }
-
-  @override
   void test_relationalExpression_missing_LHS_RHS() {
     parseExpression("is", codes: [
       ParserErrorCode.EXPECTED_TYPE_NAME,
diff --git a/pkg/analyzer/test/generated/parser_test.dart b/pkg/analyzer/test/generated/parser_test.dart
index db03ec1..2c4ce93 100644
--- a/pkg/analyzer/test/generated/parser_test.dart
+++ b/pkg/analyzer/test/generated/parser_test.dart
@@ -251,7 +251,7 @@
  * Instances of the class `AstValidator` are used to validate the correct construction of an
  * AST structure.
  */
-class AstValidator extends UnifyingAstVisitor<Object> {
+class AstValidator extends UnifyingAstVisitor<void> {
   /**
    * A list containing the errors found while traversing the AST structure.
    */
@@ -274,9 +274,9 @@
   }
 
   @override
-  Object visitNode(AstNode node) {
+  void visitNode(AstNode node) {
     _validate(node);
-    return super.visitNode(node);
+    super.visitNode(node);
   }
 
   /**
@@ -335,7 +335,7 @@
 /**
  * Tests which exercise the parser using a class member.
  */
-abstract class ClassMemberParserTestMixin implements AbstractParserTestCase {
+mixin ClassMemberParserTestMixin implements AbstractParserTestCase {
   void test_parseAwaitExpression_asStatement_inAsync() {
     createParser('m() async { await x; }');
     ClassMember member = parser.parseClassMember('C');
@@ -1771,7 +1771,7 @@
  *
  * Simpler tests should be defined in the class [SimpleParserTest].
  */
-abstract class ComplexParserTestMixin implements AbstractParserTestCase {
+mixin ComplexParserTestMixin implements AbstractParserTestCase {
   void test_additiveExpression_normal() {
     BinaryExpression expression = parseExpression("x + y - z");
     EngineTestCase.assertInstanceOf((obj) => obj is BinaryExpression,
@@ -2260,7 +2260,7 @@
   }
 }
 
-abstract class ErrorParserTestMixin implements AbstractParserTestCase {
+mixin ErrorParserTestMixin implements AbstractParserTestCase {
   void test_abstractClassMember_constructor() {
     createParser('abstract C.c();');
     ClassMember member = parser.parseClassMember('C');
@@ -5733,7 +5733,7 @@
 class ExpressionParserTest extends ParserTestCase
     with ExpressionParserTestMixin {}
 
-abstract class ExpressionParserTestMixin implements AbstractParserTestCase {
+mixin ExpressionParserTestMixin implements AbstractParserTestCase {
   void test_namedArgument() {
     var invocation = parseExpression('m(a: 1, b: 2)') as MethodInvocation;
     List<Expression> arguments = invocation.argumentList.arguments;
@@ -8048,8 +8048,7 @@
  * The class [FormalParameterParserTestMixin] defines parser tests that test
  * the parsing of formal parameters.
  */
-abstract class FormalParameterParserTestMixin
-    implements AbstractParserTestCase {
+mixin FormalParameterParserTestMixin implements AbstractParserTestCase {
   void test_parseConstructorParameter_this() {
     parseCompilationUnit('''
 class C {
@@ -9943,7 +9942,7 @@
  *
  * Intended to be mixed in to parser test case classes.
  */
-class ParserTestHelpers {
+mixin ParserTestHelpers {
   void expectCommentText(Comment comment, String expectedText) {
     expect(comment.beginToken, same(comment.endToken));
     expect(comment.beginToken.lexeme, expectedText);
@@ -9972,7 +9971,7 @@
  * invalid code sequences to ensure that the correct recovery steps are taken in
  * the parser.
  */
-abstract class RecoveryParserTestMixin implements AbstractParserTestCase {
+mixin RecoveryParserTestMixin implements AbstractParserTestCase {
   void test_additiveExpression_missing_LHS() {
     BinaryExpression expression =
         parseExpression("+ y", codes: [ParserErrorCode.MISSING_IDENTIFIER]);
@@ -12540,7 +12539,7 @@
  *
  * More complex tests should be defined in the class [ComplexParserTest].
  */
-abstract class SimpleParserTestMixin implements AbstractParserTestCase {
+mixin SimpleParserTestMixin implements AbstractParserTestCase {
   ConstructorName parseConstructorName(String name) {
     createParser('new $name();');
     Statement statement = parser.parseStatement2();
@@ -14494,7 +14493,7 @@
  * The class [FormalParameterParserTestMixin] defines parser tests that test
  * the parsing statements.
  */
-abstract class StatementParserTestMixin implements AbstractParserTestCase {
+mixin StatementParserTestMixin implements AbstractParserTestCase {
   void test_invalid_typeParamAnnotation() {
     parseCompilationUnit('main() { C<@Foo T> v; }',
         errors: usingFastaParser
@@ -15870,7 +15869,7 @@
  * Tests which exercise the parser using a complete compilation unit or
  * compilation unit member.
  */
-abstract class TopLevelParserTestMixin implements AbstractParserTestCase {
+mixin TopLevelParserTestMixin implements AbstractParserTestCase {
   void test_function_literal_allowed_at_toplevel() {
     parseCompilationUnit("var x = () {};");
   }
diff --git a/pkg/analyzer/test/generated/resolver_test.dart b/pkg/analyzer/test/generated/resolver_test.dart
index 2c0bdfd..0558400 100644
--- a/pkg/analyzer/test/generated/resolver_test.dart
+++ b/pkg/analyzer/test/generated/resolver_test.dart
@@ -413,7 +413,7 @@
  * Instances of the class `StaticTypeVerifier` verify that all of the nodes in an AST
  * structure that should have a static type associated with them do have a static type.
  */
-class StaticTypeVerifier extends GeneralizingAstVisitor<Object> {
+class StaticTypeVerifier extends GeneralizingAstVisitor<void> {
   /**
    * A list containing all of the AST Expression nodes that were not resolved.
    */
@@ -479,19 +479,19 @@
   }
 
   @override
-  Object visitBreakStatement(BreakStatement node) => null;
+  void visitBreakStatement(BreakStatement node) {}
 
   @override
-  Object visitCommentReference(CommentReference node) => null;
+  void visitCommentReference(CommentReference node) {}
 
   @override
-  Object visitContinueStatement(ContinueStatement node) => null;
+  void visitContinueStatement(ContinueStatement node) {}
 
   @override
-  Object visitExportDirective(ExportDirective node) => null;
+  void visitExportDirective(ExportDirective node) {}
 
   @override
-  Object visitExpression(Expression node) {
+  void visitExpression(Expression node) {
     node.visitChildren(this);
     DartType staticType = node.staticType;
     if (staticType == null) {
@@ -499,66 +499,65 @@
     } else {
       _resolvedExpressionCount++;
     }
-    return null;
   }
 
   @override
-  Object visitImportDirective(ImportDirective node) => null;
+  void visitImportDirective(ImportDirective node) {}
 
   @override
-  Object visitLabel(Label node) => null;
+  void visitLabel(Label node) {}
 
   @override
-  Object visitLibraryIdentifier(LibraryIdentifier node) => null;
+  void visitLibraryIdentifier(LibraryIdentifier node) {}
 
   @override
-  Object visitPrefixedIdentifier(PrefixedIdentifier node) {
+  void visitPrefixedIdentifier(PrefixedIdentifier node) {
     // In cases where we have a prefixed identifier where the prefix is dynamic,
     // we don't want to assert that the node will have a type.
     if (node.staticType == null &&
         resolutionMap.staticTypeForExpression(node.prefix).isDynamic) {
-      return null;
+      return;
     }
-    return super.visitPrefixedIdentifier(node);
+    super.visitPrefixedIdentifier(node);
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     // In cases where identifiers are being used for something other than an
     // expressions, then they can be ignored.
     AstNode parent = node.parent;
     if (parent is MethodInvocation && identical(node, parent.methodName)) {
-      return null;
+      return;
     } else if (parent is RedirectingConstructorInvocation &&
         identical(node, parent.constructorName)) {
-      return null;
+      return;
     } else if (parent is SuperConstructorInvocation &&
         identical(node, parent.constructorName)) {
-      return null;
+      return;
     } else if (parent is ConstructorName && identical(node, parent.name)) {
-      return null;
+      return;
     } else if (parent is ConstructorFieldInitializer &&
         identical(node, parent.fieldName)) {
-      return null;
+      return;
     } else if (node.staticElement is PrefixElement) {
       // Prefixes don't have a type.
-      return null;
+      return;
     }
-    return super.visitSimpleIdentifier(node);
+    super.visitSimpleIdentifier(node);
   }
 
   @override
-  Object visitTypeAnnotation(TypeAnnotation node) {
+  void visitTypeAnnotation(TypeAnnotation node) {
     if (node.type == null) {
       _unresolvedTypes.add(node);
     } else {
       _resolvedTypeCount++;
     }
-    return super.visitTypeAnnotation(node);
+    super.visitTypeAnnotation(node);
   }
 
   @override
-  Object visitTypeName(TypeName node) {
+  void visitTypeName(TypeName node) {
     // Note: do not visit children from this node, the child SimpleIdentifier in
     // TypeName (i.e. "String") does not have a static type defined.
     // TODO(brianwilkerson) Not visiting the children means that we won't catch
@@ -568,7 +567,6 @@
     } else {
       _resolvedTypeCount++;
     }
-    return null;
   }
 
   String _getFileName(AstNode node) {
@@ -856,77 +854,6 @@
     }
   }
 
-  test_functionExpression_asInvocationArgument() async {
-    if (previewDart2) {
-      return;
-    }
-    String code = r'''
-class MyMap<K, V> {
-  forEach(f(K key, V value)) {}
-}
-f(MyMap<int, String> m) {
-  m.forEach((k, v) {
-    k;
-    v;
-  });
-}''';
-    Source source = addSource(code);
-    CompilationUnit unit = await _computeResolvedUnit(source);
-    // k
-    SimpleIdentifier kIdentifier = EngineTestCase.findNode(
-        unit, code, "k;", (node) => node is SimpleIdentifier);
-    expect(kIdentifier.staticType, typeProvider.dynamicType);
-    // v
-    SimpleIdentifier vIdentifier = EngineTestCase.findNode(
-        unit, code, "v;", (node) => node is SimpleIdentifier);
-    expect(vIdentifier.staticType, typeProvider.dynamicType);
-  }
-
-  test_functionExpression_asInvocationArgument_functionExpressionInvocation() async {
-    if (previewDart2) {
-      return;
-    }
-    String code = r'''
-main() {
-  (f(String value)) {} ((v) {
-    v;
-  });
-}''';
-    Source source = addSource(code);
-    CompilationUnit unit = await _computeResolvedUnit(source);
-    // v
-    FormalParameter vParameter = EngineTestCase.findNode(
-        unit, code, "v)", (node) => node is FormalParameter);
-    expect(vParameter.identifier.staticType, typeProvider.dynamicType);
-    SimpleIdentifier vIdentifier = EngineTestCase.findNode(
-        unit, code, "v;", (node) => node is SimpleIdentifier);
-    expect(vIdentifier.staticType, typeProvider.dynamicType);
-  }
-
-  test_functionExpression_asInvocationArgument_keepIfLessSpecific() async {
-    if (previewDart2) {
-      return;
-    }
-    String code = r'''
-class MyList {
-  forEach(f(Object value)) {}
-}
-f(MyList list) {
-  list.forEach((int v) {
-    v;
-  });
-}''';
-    Source source = addSource(code);
-    CompilationUnit unit = await _computeResolvedUnit(source);
-    // v
-    FormalParameter vParameter = EngineTestCase.findNode(
-        unit, code, "v)", (node) => node is SimpleFormalParameter);
-    expect(vParameter.identifier.staticType, typeProvider.intType);
-    SimpleIdentifier vIdentifier = EngineTestCase.findNode(
-        unit, code, "v;", (node) => node is SimpleIdentifier);
-    expect(vIdentifier.staticType, typeProvider.intType);
-  }
-
   test_functionExpression_asInvocationArgument_notSubtypeOfStaticType() async {
     String code = r'''
 class A {
@@ -946,50 +873,6 @@
         same(0));
   }
 
-  test_functionExpression_asInvocationArgument_replaceIfMoreSpecific() async {
-    if (previewDart2) {
-      return;
-    }
-    String code = r'''
-class MyList<E> {
-  forEach(f(E value)) {}
-}
-f(MyList<String> list) {
-  list.forEach((Object v) {
-    v;
-  });
-}''';
-    Source source = addSource(code);
-    CompilationUnit unit = await _computeResolvedUnit(source);
-    // v
-    FormalParameter vParameter = EngineTestCase.findNode(
-        unit, code, "v)", (node) => node is SimpleFormalParameter);
-    expect(vParameter.identifier.staticType, typeProvider.objectType);
-  }
-
-  test_initializer() async {
-    if (previewDart2) {
-      return;
-    }
-    Source source = addSource(r'''
-f() {
-  var v = 0;
-  return v;
-}''');
-    CompilationUnit unit = await _computeResolvedUnit(source);
-    FunctionDeclaration function = unit.declarations[0] as FunctionDeclaration;
-    BlockFunctionBody body =
-        function.functionExpression.body as BlockFunctionBody;
-    NodeList<Statement> statements = body.block.statements;
-    // Type of 'v' in declaration.
-    {
-      VariableDeclarationStatement statement =
-          statements[0] as VariableDeclarationStatement;
-      SimpleIdentifier variableName = statement.variables.variables[0].name;
-      expect(variableName.staticType, typeProvider.dynamicType);
-    }
-  }
-
   test_initializer_hasStaticType() async {
     Source source = addSource(r'''
 f() {
@@ -1168,23 +1051,6 @@
     expect(getter.staticType, typeProvider.dynamicType);
   }
 
-  test_objectAccessInference_enabled_for_cascades() async {
-    if (previewDart2) {
-      return;
-    }
-    String name = 'hashCode';
-    String code = '''
-main() {
-  dynamic obj;
-  obj..$name..$name; // marker
-}''';
-    CompilationUnit unit = await resolveSource(code);
-    PropertyAccess access =
-        findMarkedIdentifier(code, unit, "; // marker").parent;
-    expect(access.staticType, typeProvider.dynamicType);
-    expect(access.realTarget.staticType, typeProvider.dynamicType);
-  }
-
   test_objectMethodInference_disabled_for_library_prefix() async {
     String name = 'toString';
     addNamedSource('/helper.dart', '''
@@ -1223,38 +1089,6 @@
     expect(methodInvoke.staticType, typeProvider.dynamicType);
   }
 
-  test_objectMethodInference_enabled_for_cascades() async {
-    if (previewDart2) {
-      return;
-    }
-    String name = 'toString';
-    String code = '''
-main() {
-  dynamic obj;
-  obj..$name()..$name(); // marker
-}''';
-    CompilationUnit unit = await resolveSource(code);
-    SimpleIdentifier methodName =
-        findMarkedIdentifier(code, unit, "(); // marker");
-    MethodInvocation methodInvoke = methodName.parent;
-
-    expect(methodInvoke.staticType, typeProvider.dynamicType);
-    expect(methodInvoke.realTarget.staticType, typeProvider.dynamicType);
-  }
-
-  test_propagatedReturnType_localFunction() async {
-    if (previewDart2) {
-      return;
-    }
-    String code = r'''
-main() {
-  f() => 42;
-  var v = f();
-}''';
-    CompilationUnit unit = await resolveSource(code);
-    assertAssignedType(code, unit, typeProvider.dynamicType);
-  }
-
   /**
    * Return the resolved unit for the given [source].
    *
@@ -1293,6 +1127,7 @@
         _classElement("Iterable", objectType, ["T"]).type;
     InterfaceType listType = _classElement("List", objectType, ["E"]).type;
     InterfaceType mapType = _classElement("Map", objectType, ["K", "V"]).type;
+    InterfaceType setType = _classElement("Set", objectType, ["E"]).type;
     InterfaceType stackTraceType = _classElement("StackTrace", objectType).type;
     InterfaceType streamType = _classElement("Stream", objectType, ["T"]).type;
     InterfaceType stringType = _classElement("String", objectType).type;
@@ -1307,24 +1142,28 @@
       iterableType.element,
       listType.element,
       mapType.element,
+      setType.element,
       objectType.element,
       stackTraceType.element,
       stringType.element,
       symbolType.element,
       typeType.element
     ];
+    coreUnit.source = new TestSource('dart:core');
+    coreUnit.librarySource = coreUnit.source;
     CompilationUnitElementImpl asyncUnit = new CompilationUnitElementImpl();
     asyncUnit.types = <ClassElement>[
       futureType.element,
       futureOrType.element,
       streamType.element
     ];
-    AnalysisContext context = AnalysisEngine.instance.createAnalysisContext();
+    asyncUnit.source = new TestSource('dart:async');
+    asyncUnit.librarySource = asyncUnit.source;
     LibraryElementImpl coreLibrary = new LibraryElementImpl.forNode(
-        context, AstTestFactory.libraryIdentifier2(["dart.core"]));
+        null, null, AstTestFactory.libraryIdentifier2(["dart.core"]));
     coreLibrary.definingCompilationUnit = coreUnit;
     LibraryElementImpl asyncLibrary = new LibraryElementImpl.forNode(
-        context, AstTestFactory.libraryIdentifier2(["dart.async"]));
+        null, null, AstTestFactory.libraryIdentifier2(["dart.async"]));
     asyncLibrary.definingCompilationUnit = asyncUnit;
     //
     // Create a type provider and ensure that it can return the expected types.
@@ -1425,7 +1264,7 @@
         resourceProvider: resourceProvider);
     Source librarySource = new FileSource(getFile("/lib.dart"));
     LibraryElementImpl element = new LibraryElementImpl.forNode(
-        context, AstTestFactory.libraryIdentifier2(["lib"]));
+        context, null, AstTestFactory.libraryIdentifier2(["lib"]));
     element.definingCompilationUnit = new CompilationUnitElementImpl();
     _typeProvider = new TestTypeProvider();
     libraryScope = new LibraryScope(element);
@@ -1462,7 +1301,7 @@
       InternalAnalysisContext context = AnalysisContextFactory.contextWithCore(
           resourceProvider: resourceProvider);
       var source = getFile('/test.dart').createSource();
-      var libraryElement = new LibraryElementImpl.forNode(context, null)
+      var libraryElement = new LibraryElementImpl.forNode(context, null, null)
         ..definingCompilationUnit = unitElement;
       var libraryScope = new LibraryScope(libraryElement);
       var visitor = new TypeResolverVisitor(
@@ -2332,7 +2171,7 @@
       InternalAnalysisContext context = AnalysisContextFactory.contextWithCore(
           resourceProvider: resourceProvider);
       var source = getFile('/test.dart').createSource();
-      var libraryElement = new LibraryElementImpl.forNode(context, null)
+      var libraryElement = new LibraryElementImpl.forNode(context, null, null)
         ..definingCompilationUnit = unitElement;
       libraryScope = new LibraryScope(libraryElement);
       visitor = new TypeResolverVisitor(
diff --git a/pkg/analyzer/test/generated/resolver_test_case.dart b/pkg/analyzer/test/generated/resolver_test_case.dart
index d7a954d..2c68db3 100644
--- a/pkg/analyzer/test/generated/resolver_test_case.dart
+++ b/pkg/analyzer/test/generated/resolver_test_case.dart
@@ -1,9 +1,10 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:async';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
@@ -11,9 +12,11 @@
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
+import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/dart/analysis/experiments.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
+import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/type.dart';
 import 'package:analyzer/src/error/codes.dart';
@@ -26,11 +29,10 @@
 import 'package:analyzer/src/generated/testing/ast_test_factory.dart';
 import 'package:analyzer/src/generated/testing/element_factory.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
-import 'package:analyzer/src/dart/analysis/byte_store.dart';
-import 'package:analyzer/src/dart/analysis/performance_logger.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 
-import '../src/context/mock_sdk.dart';
 import 'analysis_context_factory.dart';
 import 'test_support.dart';
 
@@ -38,7 +40,7 @@
  * An AST visitor used to verify that all of the nodes in an AST structure that
  * should have been resolved were resolved.
  */
-class ResolutionVerifier extends RecursiveAstVisitor<Object> {
+class ResolutionVerifier extends RecursiveAstVisitor<void> {
   /**
    * A set containing nodes that are known to not be resolvable and should
    * therefore not cause the test to fail.
@@ -88,7 +90,7 @@
   }
 
   @override
-  Object visitAnnotation(Annotation node) {
+  void visitAnnotation(Annotation node) {
     node.visitChildren(this);
     ElementAnnotation elementAnnotation = node.elementAnnotation;
     if (elementAnnotation == null) {
@@ -98,154 +100,153 @@
     } else if (elementAnnotation is! ElementAnnotation) {
       _wrongTypedNodes.add(node);
     }
-    return null;
   }
 
   @override
-  Object visitBinaryExpression(BinaryExpression node) {
+  void visitBinaryExpression(BinaryExpression node) {
     node.visitChildren(this);
     if (!node.operator.isUserDefinableOperator) {
-      return null;
+      return;
     }
     DartType operandType = node.leftOperand.staticType;
     if (operandType == null || operandType.isDynamic) {
-      return null;
+      return;
     }
-    return _checkResolved(
-        node, node.staticElement, (node) => node is MethodElement);
+    _checkResolved(node, node.staticElement, (node) => node is MethodElement);
   }
 
   @override
-  Object visitCommentReference(CommentReference node) => null;
+  void visitCommentReference(CommentReference node) {}
 
   @override
-  Object visitCompilationUnit(CompilationUnit node) {
+  void visitCompilationUnit(CompilationUnit node) {
     node.visitChildren(this);
-    return _checkResolved(
+    _checkResolved(
         node, node.declaredElement, (node) => node is CompilationUnitElement);
   }
 
   @override
-  Object visitExportDirective(ExportDirective node) =>
-      _checkResolved(node, node.element, (node) => node is ExportElement);
+  void visitExportDirective(ExportDirective node) {
+    _checkResolved(node, node.element, (node) => node is ExportElement);
+  }
 
   @override
-  Object visitFunctionDeclaration(FunctionDeclaration node) {
+  void visitFunctionDeclaration(FunctionDeclaration node) {
     node.visitChildren(this);
     if (node.declaredElement is LibraryElement) {
       _wrongTypedNodes.add(node);
     }
-    return null;
   }
 
   @override
-  Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
+  void visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     node.visitChildren(this);
     // TODO(brianwilkerson) If we start resolving function expressions, then
     // conditionally check to see whether the node was resolved correctly.
-    return null;
     //checkResolved(node, node.getElement(), FunctionElement.class);
   }
 
   @override
-  Object visitImportDirective(ImportDirective node) {
+  void visitImportDirective(ImportDirective node) {
     // Not sure how to test the combinators given that it isn't an error if the
     // names are not defined.
     _checkResolved(node, node.element, (node) => node is ImportElement);
     SimpleIdentifier prefix = node.prefix;
     if (prefix == null) {
-      return null;
+      return;
     }
-    return _checkResolved(
+    _checkResolved(
         prefix, prefix.staticElement, (node) => node is PrefixElement);
   }
 
   @override
-  Object visitIndexExpression(IndexExpression node) {
+  void visitIndexExpression(IndexExpression node) {
     node.visitChildren(this);
     DartType targetType = node.realTarget.staticType;
     if (targetType == null || targetType.isDynamic) {
-      return null;
+      return;
     }
-    return _checkResolved(
-        node, node.staticElement, (node) => node is MethodElement);
+    _checkResolved(node, node.staticElement, (node) => node is MethodElement);
   }
 
   @override
-  Object visitLibraryDirective(LibraryDirective node) =>
-      _checkResolved(node, node.element, (node) => node is LibraryElement);
+  void visitLibraryDirective(LibraryDirective node) {
+    _checkResolved(node, node.element, (node) => node is LibraryElement);
+  }
 
   @override
-  Object visitNamedExpression(NamedExpression node) =>
-      node.expression.accept(this);
+  void visitNamedExpression(NamedExpression node) {
+    node.expression.accept(this);
+  }
 
   @override
-  Object visitPartDirective(PartDirective node) => _checkResolved(
-      node, node.element, (node) => node is CompilationUnitElement);
+  void visitPartDirective(PartDirective node) {
+    _checkResolved(
+        node, node.element, (node) => node is CompilationUnitElement);
+  }
 
   @override
-  Object visitPartOfDirective(PartOfDirective node) =>
-      _checkResolved(node, node.element, (node) => node is LibraryElement);
+  void visitPartOfDirective(PartOfDirective node) {
+    _checkResolved(node, node.element, (node) => node is LibraryElement);
+  }
 
   @override
-  Object visitPostfixExpression(PostfixExpression node) {
+  void visitPostfixExpression(PostfixExpression node) {
     node.visitChildren(this);
     if (!node.operator.isUserDefinableOperator) {
-      return null;
+      return;
     }
     DartType operandType = node.operand.staticType;
     if (operandType == null || operandType.isDynamic) {
-      return null;
+      return;
     }
-    return _checkResolved(
-        node, node.staticElement, (node) => node is MethodElement);
+    _checkResolved(node, node.staticElement, (node) => node is MethodElement);
   }
 
   @override
-  Object visitPrefixedIdentifier(PrefixedIdentifier node) {
+  void visitPrefixedIdentifier(PrefixedIdentifier node) {
     SimpleIdentifier prefix = node.prefix;
     prefix.accept(this);
     DartType prefixType = prefix.staticType;
     if (prefixType == null || prefixType.isDynamic) {
-      return null;
+      return;
     }
-    return _checkResolved(node, node.staticElement, null);
+    _checkResolved(node, node.staticElement, null);
   }
 
   @override
-  Object visitPrefixExpression(PrefixExpression node) {
+  void visitPrefixExpression(PrefixExpression node) {
     node.visitChildren(this);
     if (!node.operator.isUserDefinableOperator) {
-      return null;
+      return;
     }
     DartType operandType = node.operand.staticType;
     if (operandType == null || operandType.isDynamic) {
-      return null;
+      return;
     }
-    return _checkResolved(
-        node, node.staticElement, (node) => node is MethodElement);
+    _checkResolved(node, node.staticElement, (node) => node is MethodElement);
   }
 
   @override
-  Object visitPropertyAccess(PropertyAccess node) {
+  void visitPropertyAccess(PropertyAccess node) {
     Expression target = node.realTarget;
     target.accept(this);
     DartType targetType = target.staticType;
     if (targetType == null || targetType.isDynamic) {
-      return null;
+      return;
     }
-    return node.propertyName.accept(this);
+    node.propertyName.accept(this);
   }
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     if (node.name == "void") {
-      return null;
+      return;
     }
     if (resolutionMap.staticTypeForExpression(node) != null &&
         resolutionMap.staticTypeForExpression(node).isDynamic &&
         node.staticElement == null) {
-      return null;
+      return;
     }
     AstNode parent = node.parent;
     if (parent is MethodInvocation) {
@@ -254,14 +255,14 @@
         Expression target = invocation.realTarget;
         DartType targetType = target == null ? null : target.staticType;
         if (targetType == null || targetType.isDynamic) {
-          return null;
+          return;
         }
       }
     }
-    return _checkResolved(node, node.staticElement, null);
+    _checkResolved(node, node.staticElement, null);
   }
 
-  Object _checkResolved(
+  void _checkResolved(
       AstNode node, Element element, Predicate<Element> predicate) {
     if (element == null) {
       if (_knownExceptions == null || !_knownExceptions.contains(node)) {
@@ -272,7 +273,6 @@
         _wrongTypedNodes.add(node);
       }
     }
-    return null;
   }
 
   String _getFileName(AstNode node) {
@@ -310,12 +310,7 @@
   }
 }
 
-class ResolverTestCase extends EngineTestCase {
-  /**
-   * The resource provider used by the test case.
-   */
-  MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
-
+class ResolverTestCase extends EngineTestCase with ResourceProviderMixin {
   /**
    * The analysis context used to parse the compilation units being resolved.
    */
@@ -350,9 +345,6 @@
 
   bool get enableNewAnalysisDriver => false;
 
-  /// TODO(brianwilkerson) Remove this getter.
-  bool get previewDart2 => true;
-
   /**
    * Return a type provider that can be used to test the results of resolution.
    *
@@ -384,8 +376,8 @@
    * set in the content provider. Return the source representing the added file.
    */
   Source addNamedSource(String filePath, String contents) {
-    filePath = resourceProvider.convertPath(filePath);
-    File file = resourceProvider.newFile(filePath, contents);
+    filePath = convertPath(filePath);
+    File file = newFile(filePath, content: contents);
     Source source = file.createSource();
     if (enableNewAnalysisDriver) {
       driver.addFile(filePath);
@@ -529,7 +521,7 @@
   Future<TestAnalysisResult> computeAnalysisResult(Source source) async {
     TestAnalysisResult analysisResult;
     if (enableNewAnalysisDriver) {
-      AnalysisResult result = await driver.getResult(source.fullName);
+      ResolvedUnitResult result = await driver.getResult(source.fullName);
       analysisResult =
           new TestAnalysisResult(source, result.unit, result.errors);
     } else {
@@ -570,7 +562,7 @@
    * give it an empty content. Return the source that was created.
    */
   Source createNamedSource(String fileName) {
-    Source source = resourceProvider.getFile(fileName).createSource();
+    Source source = getFile(fileName).createSource();
     analysisContext2.setContents(source, '');
     return source;
   }
@@ -585,7 +577,7 @@
   LibraryElementImpl createTestLibrary(
       AnalysisContext context, String libraryName,
       [List<String> typeNames]) {
-    String fileName = resourceProvider.convertPath("/test/$libraryName.dart");
+    String fileName = convertPath("/test/$libraryName.dart");
     Source definingCompilationUnitSource = createNamedSource(fileName);
     List<CompilationUnitElement> sourcedCompilationUnits;
     if (typeNames == null) {
@@ -611,7 +603,9 @@
     compilationUnit.librarySource =
         compilationUnit.source = definingCompilationUnitSource;
     LibraryElementImpl library = new LibraryElementImpl.forNode(
-        context, AstTestFactory.libraryIdentifier2([libraryName]));
+        context,
+        driver?.currentSession,
+        AstTestFactory.libraryIdentifier2([libraryName]));
     library.definingCompilationUnit = compilationUnit;
     library.parts = sourcedCompilationUnits;
     return library;
@@ -662,6 +656,10 @@
       fail('Only packages or options can be specified.');
     }
     options ??= defaultAnalysisOptions;
+    (options as AnalysisOptionsImpl).enabledExperiments = [
+      Experiments.constantUpdate2018Name,
+      Experiments.setLiteralName
+    ];
     if (enableNewAnalysisDriver) {
       DartSdk sdk = new MockSdk(resourceProvider: resourceProvider)
         ..context.analysisOptions = options;
@@ -674,10 +672,8 @@
         var packageMap = <String, List<Folder>>{};
         packages.forEach((args) {
           String name = args[0];
-          String path =
-              resourceProvider.convertPath('/packages/$name/$name.dart');
           String content = args[1];
-          File file = resourceProvider.newFile(path, content);
+          File file = newFile('/packages/$name/$name.dart', content: content);
           packageMap[name] = <Folder>[file.parent];
         });
         resolvers.add(new PackageMapUriResolver(resourceProvider, packageMap));
@@ -832,6 +828,19 @@
   CompilationUnit testUnit;
 
   /**
+   * Find the expression that starts at the offset of [search] and validate its
+   * that its static type matches the given [type].
+   *
+   * If [type] is a string, validates that the expression's static type
+   * stringifies to that text. Otherwise, [type] is used directly a [Matcher]
+   * to match the type.
+   */
+  void expectExpressionType(String search, type) {
+    Expression expression = findExpression(search);
+    _expectType(expression.staticType, type);
+  }
+
+  /**
    * Looks up the identifier with [name] and validates that its type type
    * stringifies to [type] and that its generics match the given stringified
    * output.
@@ -889,15 +898,19 @@
   void expectInitializerType(String name, type) {
     SimpleIdentifier identifier = findIdentifier(name);
     VariableDeclaration declaration =
-        identifier.getAncestor((node) => node is VariableDeclaration);
+        identifier.thisOrAncestorOfType<VariableDeclaration>();
     Expression initializer = declaration.initializer;
     _expectType(initializer.staticType, type);
   }
 
+  Expression findExpression(String search) {
+    return EngineTestCase.findNode(
+        testUnit, testCode, search, (node) => node is Expression);
+  }
+
   SimpleIdentifier findIdentifier(String search) {
-    SimpleIdentifier identifier = EngineTestCase.findNode(
+    return EngineTestCase.findNode(
         testUnit, testCode, search, (node) => node is SimpleIdentifier);
-    return identifier;
   }
 
   Future<Null> resolveTestUnit(String code, {bool noErrors: true}) async {
diff --git a/pkg/analyzer/test/generated/sdk_test.dart b/pkg/analyzer/test/generated/sdk_test.dart
index f311ea9..6dae63b 100644
--- a/pkg/analyzer/test/generated/sdk_test.dart
+++ b/pkg/analyzer/test/generated/sdk_test.dart
@@ -4,10 +4,11 @@
 
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../src/context/mock_sdk.dart';
 import 'test_support.dart';
 
 main() {
@@ -18,14 +19,14 @@
 }
 
 @reflectiveTest
-class DartSdkManagerTest extends EngineTestCase {
+class DartSdkManagerTest extends EngineTestCase with ResourceProviderMixin {
   void test_anySdk() {
     DartSdkManager manager = new DartSdkManager('/a/b/c', false);
     expect(manager.anySdk, isNull);
 
     AnalysisOptions options = new AnalysisOptionsImpl();
     SdkDescription description = new SdkDescription(<String>['/c/d'], options);
-    DartSdk sdk = new MockSdk();
+    DartSdk sdk = new MockSdk(resourceProvider: resourceProvider);
     manager.getSdk(description, () => sdk);
     expect(manager.anySdk, same(sdk));
   }
@@ -34,11 +35,11 @@
     DartSdkManager manager = new DartSdkManager('/a/b/c', false);
     AnalysisOptions options = new AnalysisOptionsImpl();
     SdkDescription description1 = new SdkDescription(<String>['/c/d'], options);
-    DartSdk sdk1 = new MockSdk();
+    DartSdk sdk1 = new MockSdk(resourceProvider: resourceProvider);
     DartSdk result1 = manager.getSdk(description1, () => sdk1);
     expect(result1, same(sdk1));
     SdkDescription description2 = new SdkDescription(<String>['/e/f'], options);
-    DartSdk sdk2 = new MockSdk();
+    DartSdk sdk2 = new MockSdk(resourceProvider: resourceProvider);
     DartSdk result2 = manager.getSdk(description2, () => sdk2);
     expect(result2, same(sdk2));
 
@@ -50,7 +51,7 @@
     DartSdkManager manager = new DartSdkManager('/a/b/c', false);
     AnalysisOptions options = new AnalysisOptionsImpl();
     SdkDescription description = new SdkDescription(<String>['/c/d'], options);
-    DartSdk sdk = new MockSdk();
+    DartSdk sdk = new MockSdk(resourceProvider: resourceProvider);
     DartSdk result = manager.getSdk(description, () => sdk);
     expect(result, same(sdk));
     manager.getSdk(description, _failIfAbsent);
diff --git a/pkg/analyzer/test/generated/simple_resolver_test.dart b/pkg/analyzer/test/generated/simple_resolver_test.dart
index 3d64b48..55d92dd 100644
--- a/pkg/analyzer/test/generated/simple_resolver_test.dart
+++ b/pkg/analyzer/test/generated/simple_resolver_test.dart
@@ -142,7 +142,7 @@
     }
     // get parameter
     Expression rhs = assignment.rightHandSide;
-    expect(rhs.staticParameterElement, previewDart2 ? isNotNull : isNull);
+    expect(rhs.staticParameterElement, isNotNull);
   }
 
   test_argumentResolution_setter_propagated_propertyAccess() async {
@@ -166,7 +166,7 @@
     }
     // get parameter
     Expression rhs = assignment.rightHandSide;
-    expect(rhs.staticParameterElement, previewDart2 ? isNotNull : isNull);
+    expect(rhs.staticParameterElement, isNotNull);
   }
 
   test_argumentResolution_setter_static() async {
@@ -376,42 +376,6 @@
     verify([source]);
   }
 
-  test_commentReference_class() async {
-    Source source = addSource(r'''
-f() {}
-/** [A] [new A] [A.n] [new A.n] [m] [f] */
-class A {
-  A() {}
-  A.n() {}
-  m() {}
-}''');
-    await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-  }
-
-  test_commentReference_parameter() async {
-    Source source = addSource(r'''
-class A {
-  A() {}
-  A.n() {}
-  /** [e] [f] */
-  m(e, f()) {}
-}''');
-    await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-  }
-
-  test_commentReference_singleLine() async {
-    Source source = addSource(r'''
-/// [A]
-class A {}''');
-    await computeAnalysisResult(source);
-    assertNoErrors(source);
-    verify([source]);
-  }
-
   test_continueTarget_labeled() async {
     // Verify that the target of the label is correctly found and is recorded
     // as the unlabeled portion of the statement.
@@ -1717,7 +1681,7 @@
 }
 
 class _SimpleResolverTest_localVariable_types_invoked
-    extends RecursiveAstVisitor<Object> {
+    extends RecursiveAstVisitor<void> {
   final SimpleResolverTest test;
 
   List<bool> found;
@@ -1729,25 +1693,20 @@
       : super();
 
   @override
-  Object visitSimpleIdentifier(SimpleIdentifier node) {
+  void visitSimpleIdentifier(SimpleIdentifier node) {
     if (node.name == "myVar" && node.parent is MethodInvocation) {
       try {
         found[0] = true;
         // check static type
         DartType staticType = node.staticType;
-        if (test.previewDart2) {
-          expect(staticType is FunctionType, isTrue);
-          FunctionType functionType = staticType;
-          expect(
-              functionType.parameters[0].type, same(test.typeProvider.intType));
-          expect(functionType.returnType, same(test.typeProvider.stringType));
-        } else {
-          expect(staticType, same(test.typeProvider.dynamicType));
-        }
+        expect(staticType is FunctionType, isTrue);
+        FunctionType functionType = staticType;
+        expect(
+            functionType.parameters[0].type, same(test.typeProvider.intType));
+        expect(functionType.returnType, same(test.typeProvider.stringType));
       } on AnalysisException catch (e, stackTrace) {
         thrownException[0] = new CaughtException(e, stackTrace);
       }
     }
-    return null;
   }
 }
diff --git a/pkg/analyzer/test/generated/source_factory_test.dart b/pkg/analyzer/test/generated/source_factory_test.dart
index 09a3c10..767de68 100644
--- a/pkg/analyzer/test/generated/source_factory_test.dart
+++ b/pkg/analyzer/test/generated/source_factory_test.dart
@@ -13,6 +13,7 @@
 import 'package:analyzer/src/generated/utilities_dart.dart' as utils;
 import 'package:analyzer/src/source/package_map_resolver.dart';
 import 'package:analyzer/src/source/source_resource.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:package_config/packages.dart';
 import 'package:package_config/packages_file.dart' as pkgfile show parse;
 import 'package:package_config/src/packages_impl.dart';
@@ -217,9 +218,7 @@
 }
 
 @reflectiveTest
-class SourceFactoryTest {
-  MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
-
+class SourceFactoryTest with ResourceProviderMixin {
   void test_creation() {
     expect(new SourceFactory([]), isNotNull);
   }
@@ -252,12 +251,11 @@
   void test_resolveUri_nonAbsolute_absolute() {
     SourceFactory factory =
         new SourceFactory([new AbsoluteUriResolver(resourceProvider)]);
-    String sourcePath = resourceProvider.convertPath('/does/not/exist.dart');
+    String sourcePath = convertPath('/does/not/exist.dart');
     String targetRawPath = '/does/not/matter.dart';
-    String targetPath = resourceProvider.convertPath(targetRawPath);
-    String targetUri =
-        resourceProvider.pathContext.toUri(targetRawPath).toString();
-    Source sourceSource = new FileSource(resourceProvider.getFile(sourcePath));
+    String targetPath = convertPath(targetRawPath);
+    String targetUri = toUri(targetRawPath).toString();
+    Source sourceSource = new FileSource(getFile(sourcePath));
     Source result = factory.resolveUri(sourceSource, targetUri);
     expect(result.fullName, targetPath);
   }
@@ -265,10 +263,9 @@
   void test_resolveUri_nonAbsolute_relative() {
     SourceFactory factory =
         new SourceFactory([new AbsoluteUriResolver(resourceProvider)]);
-    String path = _p('/does/not/have.dart');
-    Source containingSource = new FileSource(resourceProvider.getFile(path));
+    Source containingSource = new FileSource(getFile('/does/not/have.dart'));
     Source result = factory.resolveUri(containingSource, 'exist.dart');
-    expect(result.fullName, _p('/does/not/exist.dart'));
+    expect(result.fullName, convertPath('/does/not/exist.dart'));
   }
 
   void test_resolveUri_nonAbsolute_relative_package() {
@@ -301,8 +298,8 @@
   }
 
   void test_restoreUri() {
-    File file1 = resourceProvider.getFile(_p("/some/file1.dart"));
-    File file2 = resourceProvider.getFile(_p("/some/file2.dart"));
+    File file1 = getFile("/some/file1.dart");
+    File file2 = getFile("/some/file2.dart");
     Source source1 = new FileSource(file1);
     Source source2 = new FileSource(file2);
     Uri expected1 = Uri.parse("file:///my_file.dart");
@@ -311,11 +308,6 @@
     expect(factory.restoreUri(source1), same(expected1));
     expect(factory.restoreUri(source2), same(null));
   }
-
-  /**
-   * Return the [resourceProvider] specific path for the given Posix [path].
-   */
-  String _p(String path) => resourceProvider.convertPath(path);
 }
 
 class UriResolver_absolute extends UriResolver {
diff --git a/pkg/analyzer/test/generated/static_type_analyzer_test.dart b/pkg/analyzer/test/generated/static_type_analyzer_test.dart
index 8995879..6657e81 100644
--- a/pkg/analyzer/test/generated/static_type_analyzer_test.dart
+++ b/pkg/analyzer/test/generated/static_type_analyzer_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -33,6 +33,7 @@
   defineReflectiveSuite(() {
     defineReflectiveTests(StaticTypeAnalyzerTest);
     defineReflectiveTests(StaticTypeAnalyzer2Test);
+    defineReflectiveTests(StaticTypeAnalyzer3Test);
   });
 }
 
@@ -57,7 +58,7 @@
 }
 ''';
     await resolveTestUnit(code);
-    expectInitializerType('foo', previewDart2 ? 'int' : 'dynamic');
+    expectInitializerType('foo', 'int');
   }
 
   test_FunctionExpressionInvocation_curried() async {
@@ -117,11 +118,7 @@
 }
 """;
     await resolveTestUnit(code);
-    if (previewDart2) {
-      expectIdentifierType("p()", '() → dynamic');
-    } else {
-      expectIdentifierType("p()", DynamicTypeImpl.instance);
-    }
+    expectIdentifierType("p()", '() → dynamic');
   }
 
   test_staticMethods_classTypeParameters() async {
@@ -156,7 +153,7 @@
       FunctionTypeImpl type = expectFunctionType('m);', '<S>(S) → void',
           elementTypeParams: '[S]',
           typeFormals: '[S]',
-          identifierType: previewDart2 ? '<S>(S) → void' : '(dynamic) → void');
+          identifierType: '<S>(S) → void');
 
       typeS = type.typeFormals[0].type;
       type = type.instantiate([DynamicTypeImpl.instance]);
@@ -172,8 +169,7 @@
           typeParams: '[S]',
           typeArgs: '[S]',
           typeFormals: '[U]',
-          identifierType:
-              previewDart2 ? '<U>(S, U) → void' : '(S, dynamic) → void');
+          identifierType: '<U>(S, U) → void');
 
       type = type.instantiate([DynamicTypeImpl.instance]);
       expect(type.toString(), '(S, dynamic) → void');
@@ -184,6 +180,48 @@
   }
 }
 
+/**
+ * End-to-end tests of the static type analyzer that use the new driver.
+ */
+@reflectiveTest
+class StaticTypeAnalyzer3Test extends StaticTypeAnalyzer2TestShared {
+  bool get enableNewAnalysisDriver => true;
+
+  test_emptyMapLiteral_inContext() async {
+    String code = r'''
+main() {
+  useMap({});
+}
+void useMap(Map<int, int> m) {
+}
+''';
+    await resolveTestUnit(code);
+    expectExpressionType('{}', 'Map<int, int>');
+  }
+
+  test_emptyMapLiteral_notInContext() async {
+    String code = r'''
+main() {
+  var v = {};
+}
+''';
+    await resolveTestUnit(code);
+    expectExpressionType('{}', 'Map<dynamic, dynamic>');
+  }
+
+  test_emptySetLiteral_inContext() async {
+    String code = r'''
+main() {
+  useSet({});
+}
+void useSet(Set<int> s) {
+}
+''';
+    await resolveTestUnit(code);
+    expectExpressionType('{}', 'Set<int>');
+  }
+}
+
 @reflectiveTest
 class StaticTypeAnalyzerTest extends EngineTestCase with ResourceProviderMixin {
   /**
@@ -206,9 +244,6 @@
    */
   TypeProvider _typeProvider;
 
-  /// TODO(brianwilkerson) Remove this getter.
-  bool get previewDart2 => true;
-
   /**
    * The type system used to analyze the test cases.
    */
@@ -661,8 +696,6 @@
   void test_visitFunctionExpression_async_expression() {
     // () async => e, where e has type int
     InterfaceType intType = _typeProvider.intType;
-    InterfaceType futureIntType =
-        _typeProvider.futureType.instantiate(<DartType>[intType]);
     Expression expression = _resolvedVariable(intType, 'e');
     ExpressionFunctionBody body =
         AstTestFactory.expressionFunctionBody(expression);
@@ -670,17 +703,13 @@
     FunctionExpression node = _resolvedFunctionExpression(
         AstTestFactory.formalParameterList([]), body);
     DartType resultType = _analyze(node);
-    if (previewDart2) {
-      _assertFunctionType(
-          _typeProvider.futureType
-              .instantiate(<DartType>[_typeProvider.dynamicType]),
-          null,
-          null,
-          null,
-          resultType);
-    } else {
-      _assertFunctionType(futureIntType, null, null, null, resultType);
-    }
+    _assertFunctionType(
+        _typeProvider.futureType
+            .instantiate(<DartType>[_typeProvider.dynamicType]),
+        null,
+        null,
+        null,
+        resultType);
     _listener.assertNoErrors();
   }
 
@@ -696,17 +725,13 @@
     FunctionExpression node = _resolvedFunctionExpression(
         AstTestFactory.formalParameterList([]), body);
     DartType resultType = _analyze(node);
-    if (previewDart2) {
-      _assertFunctionType(
-          _typeProvider.futureType
-              .instantiate(<DartType>[_typeProvider.dynamicType]),
-          null,
-          null,
-          null,
-          resultType);
-    } else {
-      _assertFunctionType(futureIntType, null, null, null, resultType);
-    }
+    _assertFunctionType(
+        _typeProvider.futureType
+            .instantiate(<DartType>[_typeProvider.dynamicType]),
+        null,
+        null,
+        null,
+        resultType);
     _listener.assertNoErrors();
   }
 
@@ -724,17 +749,13 @@
     FunctionExpression node = _resolvedFunctionExpression(
         AstTestFactory.formalParameterList([]), body);
     DartType resultType = _analyze(node);
-    if (previewDart2) {
-      _assertFunctionType(
-          _typeProvider.futureType
-              .instantiate(<DartType>[_typeProvider.dynamicType]),
-          null,
-          null,
-          null,
-          resultType);
-    } else {
-      _assertFunctionType(futureIntType, null, null, null, resultType);
-    }
+    _assertFunctionType(
+        _typeProvider.futureType
+            .instantiate(<DartType>[_typeProvider.dynamicType]),
+        null,
+        null,
+        null,
+        resultType);
     _listener.assertNoErrors();
   }
 
@@ -800,13 +821,8 @@
     DartType resultType = _analyze(node);
     Map<String, DartType> expectedNamedTypes = new HashMap<String, DartType>();
     expectedNamedTypes["p"] = dynamicType;
-    if (previewDart2) {
-      _assertFunctionType(
-          dynamicType, null, null, expectedNamedTypes, resultType);
-    } else {
-      _assertFunctionType(
-          _typeProvider.intType, null, null, expectedNamedTypes, resultType);
-    }
+    _assertFunctionType(
+        dynamicType, null, null, expectedNamedTypes, resultType);
     _listener.assertNoErrors();
   }
 
@@ -838,13 +854,8 @@
         AstTestFactory.expressionFunctionBody(_resolvedInteger(0)));
     _analyze5(p);
     DartType resultType = _analyze(node);
-    if (previewDart2) {
-      _assertFunctionType(
-          dynamicType, <DartType>[dynamicType], null, null, resultType);
-    } else {
-      _assertFunctionType(_typeProvider.intType, <DartType>[dynamicType], null,
-          null, resultType);
-    }
+    _assertFunctionType(
+        dynamicType, <DartType>[dynamicType], null, null, resultType);
     _listener.assertNoErrors();
   }
 
@@ -883,13 +894,8 @@
     DartType resultType = _analyze(node);
     Map<String, DartType> expectedNamedTypes = new HashMap<String, DartType>();
     expectedNamedTypes["p2"] = dynamicType;
-    if (previewDart2) {
-      _assertFunctionType(dynamicType, <DartType>[dynamicType], null,
-          expectedNamedTypes, resultType);
-    } else {
-      _assertFunctionType(_typeProvider.intType, <DartType>[dynamicType], null,
-          expectedNamedTypes, resultType);
-    }
+    _assertFunctionType(dynamicType, <DartType>[dynamicType], null,
+        expectedNamedTypes, resultType);
     _listener.assertNoErrors();
   }
 
@@ -926,13 +932,8 @@
     _analyze5(p1);
     _analyze5(p2);
     DartType resultType = _analyze(node);
-    if (previewDart2) {
-      _assertFunctionType(dynamicType, <DartType>[dynamicType],
-          <DartType>[dynamicType], null, resultType);
-    } else {
-      _assertFunctionType(_typeProvider.intType, <DartType>[dynamicType],
-          <DartType>[dynamicType], null, resultType);
-    }
+    _assertFunctionType(dynamicType, <DartType>[dynamicType],
+        <DartType>[dynamicType], null, resultType);
     _listener.assertNoErrors();
   }
 
@@ -967,13 +968,8 @@
         AstTestFactory.expressionFunctionBody(_resolvedInteger(0)));
     _analyze5(p);
     DartType resultType = _analyze(node);
-    if (previewDart2) {
-      _assertFunctionType(
-          dynamicType, null, <DartType>[dynamicType], null, resultType);
-    } else {
-      _assertFunctionType(_typeProvider.intType, null, <DartType>[dynamicType],
-          null, resultType);
-    }
+    _assertFunctionType(
+        dynamicType, null, <DartType>[dynamicType], null, resultType);
     _listener.assertNoErrors();
   }
 
@@ -1139,16 +1135,9 @@
     // [0]
     Expression node = AstTestFactory.listLiteral([_resolvedInteger(0)]);
     DartType resultType = _analyze(node);
-    if (previewDart2) {
-      _assertType2(
-          _typeProvider.listType.instantiate(<DartType>[_typeProvider.intType]),
-          resultType);
-    } else {
-      _assertType2(
-          _typeProvider.listType
-              .instantiate(<DartType>[_typeProvider.dynamicType]),
-          resultType);
-    }
+    _assertType2(
+        _typeProvider.listType.instantiate(<DartType>[_typeProvider.intType]),
+        resultType);
     _listener.assertNoErrors();
   }
 
@@ -1194,17 +1183,10 @@
     Expression node = AstTestFactory.mapLiteral2(
         [AstTestFactory.mapLiteralEntry("k", _resolvedInteger(0))]);
     DartType resultType = _analyze(node);
-    if (previewDart2) {
-      _assertType2(
-          _typeProvider.mapType.instantiate(
-              <DartType>[_typeProvider.dynamicType, _typeProvider.intType]),
-          resultType);
-    } else {
-      _assertType2(
-          _typeProvider.mapType.instantiate(
-              <DartType>[_typeProvider.dynamicType, _typeProvider.dynamicType]),
-          resultType);
-    }
+    _assertType2(
+        _typeProvider.mapType.instantiate(
+            <DartType>[_typeProvider.dynamicType, _typeProvider.intType]),
+        resultType);
     _listener.assertNoErrors();
   }
 
@@ -1545,7 +1527,7 @@
     definingCompilationUnit.librarySource =
         definingCompilationUnit.source = source;
     LibraryElementImpl definingLibrary =
-        new LibraryElementImpl.forNode(context, null);
+        new LibraryElementImpl.forNode(context, null, null);
     definingLibrary.definingCompilationUnit = definingCompilationUnit;
     _typeProvider = context.typeProvider;
     _visitor = new ResolverVisitor(
diff --git a/pkg/analyzer/test/generated/static_type_warning_code_test.dart b/pkg/analyzer/test/generated/static_type_warning_code_test.dart
index e4f9e69..283d077 100644
--- a/pkg/analyzer/test/generated/static_type_warning_code_test.dart
+++ b/pkg/analyzer/test/generated/static_type_warning_code_test.dart
@@ -2,12 +2,9 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/error/codes.dart';
 import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/java_core.dart' show formatList;
 import 'package:analyzer/src/generated/source_io.dart';
-import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import 'resolver_test_case.dart';
@@ -30,21 +27,6 @@
 }''', [StaticTypeWarningCode.UNDEFINED_ENUM_CONSTANT]);
   }
 
-  test_ambiguousImport_function() async {
-    Source source = addSource(r'''
-import 'lib1.dart';
-import 'lib2.dart';
-g() { return f(); }''');
-    addNamedSource("/lib1.dart", r'''
-library lib1;
-f() {}''');
-    addNamedSource("/lib2.dart", r'''
-library lib2;
-f() {}''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticWarningCode.AMBIGUOUS_IMPORT]);
-  }
-
   test_assert_message_suppresses_type_promotion() async {
     // If a variable is assigned to inside the expression for an assert
     // message, type promotion should be suppressed, just as it would be if the
@@ -218,11 +200,12 @@
 }''', [StaticTypeWarningCode.EXPECTED_ONE_LIST_TYPE_ARGUMENTS]);
   }
 
-  test_expectedTwoMapTypeArguments_one() async {
+  @failingTest
+  test_expectedOneSetTypeArgument() async {
     await assertErrorsInCode(r'''
 main() {
-  <int> {};
-}''', [StaticTypeWarningCode.EXPECTED_TWO_MAP_TYPE_ARGUMENTS]);
+  <int, int>{2, 3};
+}''', [StaticTypeWarningCode.EXPECTED_ONE_SET_TYPE_ARGUMENTS]);
   }
 
   test_expectedTwoMapTypeArguments_three() async {
@@ -457,16 +440,6 @@
 ''', [StaticTypeWarningCode.ILLEGAL_SYNC_GENERATOR_RETURN_TYPE]);
   }
 
-  test_instanceAccessToStaticMember_method_invocation() async {
-    await assertErrorsInCode(r'''
-class A {
-  static m() {}
-}
-main(A a) {
-  a.m();
-}''', [StaticTypeWarningCode.INSTANCE_ACCESS_TO_STATIC_MEMBER]);
-  }
-
   test_instanceAccessToStaticMember_method_reference() async {
     await assertErrorsInCode(r'''
 class A {
@@ -617,85 +590,6 @@
 }''', [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
   }
 
-  test_invocationOfNonFunction_class() async {
-    await assertErrorsInCode(r'''
-class A {
-  void m() {
-    A();
-  }
-}''', previewDart2 ? [] : [StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION]);
-  }
-
-  test_invocationOfNonFunction_dynamic() async {
-    await assertErrorsInCode(r'''
-main() {
-  dynamic d;
-  d.hashCode();
-}
-''', [StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION]);
-  }
-
-  test_invocationOfNonFunction_localGenericFunction() async {
-    // Invoking `.call` on a `Function` type works similarly to invoking it on
-    // `dynamic`--the invocation is accepted at compile time, and all type
-    // checking is deferred until runtime.
-    await assertErrorsInCode('''
-f(Function f) {
-  return f();
-}''', []);
-  }
-
-  test_invocationOfNonFunction_localObject() async {
-    await assertErrorsInCode('''
-f(Object o) {
-  return o();
-}''', [StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION]);
-  }
-
-  test_invocationOfNonFunction_localVariable() async {
-    await assertErrorsInCode(r'''
-f() {
-  int x;
-  return x();
-}''', [StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION]);
-  }
-
-  test_invocationOfNonFunction_ordinaryInvocation() async {
-    await assertErrorsInCode(r'''
-class A {
-  static int x;
-}
-class B {
-  m() {
-    A.x();
-  }
-}''', [StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION]);
-    // A call to verify(source) fails as A.x() cannot be resolved.
-  }
-
-  test_invocationOfNonFunction_staticInvocation() async {
-    await assertErrorsInCode(r'''
-class A {
-  static int get g => 0;
-  f() {
-    A.g();
-  }
-}''', [StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION]);
-    // A call to verify(source) fails as g() cannot be resolved.
-  }
-
-  test_invocationOfNonFunction_superExpression() async {
-    await assertErrorsInCode(r'''
-class A {
-  int get g => 0;
-}
-class B extends A {
-  m() {
-    var v = super.g();
-  }
-}''', [StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION]);
-  }
-
   test_invocationOfNonFunctionExpression_literal() async {
     await assertErrorsInCode(r'''
 f() {
@@ -1348,34 +1242,6 @@
 }''', [StaticTypeWarningCode.UNDEFINED_GETTER]);
   }
 
-  test_undefinedFunction() async {
-    await assertErrorsInCode(r'''
-void f() {
-  g();
-}''', [StaticTypeWarningCode.UNDEFINED_FUNCTION]);
-  }
-
-  test_undefinedFunction_inCatch() async {
-    await assertErrorsInCode(r'''
-void f() {
-  try {
-  } on Object {
-    g();
-  }
-}''', [StaticTypeWarningCode.UNDEFINED_FUNCTION]);
-  }
-
-  test_undefinedFunction_inImportedLib() async {
-    Source source = addSource(r'''
-import 'lib.dart' as f;
-main() { return f.g(); }''');
-    addNamedSource("/lib.dart", r'''
-library lib;
-h() {}''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_FUNCTION]);
-  }
-
   test_undefinedGetter() async {
     await assertErrorsInUnverifiedCode(r'''
 class T {}
@@ -1433,12 +1299,11 @@
   test_undefinedGetter_typeLiteral_conditionalAccess() async {
     // When applied to a type literal, the conditional access operator '?.'
     // cannot be used to access instance getters of Type.
-    // TODO(brianwilkerson) We cannot verify in previewDart2 because hashCode
-    // isn't resolved.
+    // TODO(brianwilkerson) We cannot verify because hashCode isn't resolved.
     await assertErrorsInCode('''
 class A {}
 f() => A?.hashCode;
-''', [StaticTypeWarningCode.UNDEFINED_GETTER], verify: !previewDart2);
+''', [StaticTypeWarningCode.UNDEFINED_GETTER], verify: false);
   }
 
   test_undefinedGetter_wrongNumberOfTypeArguments_tooLittle() async {
@@ -1471,15 +1336,6 @@
 }''', [StaticTypeWarningCode.NON_TYPE_AS_TYPE_ARGUMENT]);
   }
 
-  test_undefinedMethod() async {
-    await assertErrorsInCode(r'''
-class A {
-  void m() {
-    n();
-  }
-}''', [StaticTypeWarningCode.UNDEFINED_METHOD]);
-  }
-
   test_undefinedMethod_assignmentExpression() async {
     await assertErrorsInCode(r'''
 class A {}
@@ -1491,17 +1347,6 @@
 }''', [StaticTypeWarningCode.UNDEFINED_METHOD]);
   }
 
-  test_undefinedMethod_generic_function_call() async {
-    // Invoking `.call` on a `Function` type works similarly to invoking it on
-    // `dynamic`--the invocation is accepted at compile time, and all type
-    // checking is deferred until runtime.
-    await assertErrorsInCode('''
-f(Function f) {
-  f.call();
-}
-''', []);
-  }
-
   test_undefinedMethod_ignoreTypePropagation() async {
     await assertErrorsInCode(r'''
 class A {}
@@ -1521,14 +1366,6 @@
         [StaticTypeWarningCode.UNDEFINED_METHOD]);
   }
 
-  test_undefinedMethod_object_call() async {
-    await assertErrorsInCode('''
-f(Object o) {
-  o.call();
-}
-''', [StaticTypeWarningCode.UNDEFINED_METHOD]);
-  }
-
   test_undefinedMethod_ofNull() async {
     // TODO(scheglov) Track https://github.com/dart-lang/sdk/issues/28430 to
     // decide whether a warning should be reported here.
@@ -1540,69 +1377,15 @@
 ''', [StaticTypeWarningCode.UNDEFINED_METHOD]);
   }
 
-  test_undefinedMethod_private() async {
-    addNamedSource("/lib.dart", r'''
-library lib;
-class A {
-  _foo() {}
-}''');
-    await assertErrorsInCode(r'''
-import 'lib.dart';
-class B extends A {
-  test() {
-    _foo();
-  }
-}''', [StaticTypeWarningCode.UNDEFINED_METHOD]);
-  }
-
-  test_undefinedMethod_proxy_annotation_fakeProxy() async {
-    await assertErrorsInCode(r'''
-library L;
-class Fake {
-  const Fake();
-}
-const proxy = const Fake();
-@proxy class PrefixProxy {}
-main() {
-  new PrefixProxy().foo();
-}''', [StaticTypeWarningCode.UNDEFINED_METHOD]);
-  }
-
-  test_undefinedMethod_typeLiteral_cascadeTarget() async {
-    await assertErrorsInCode('''
-class T {
-  static void foo() {}
-}
-main() {
-  T..foo();
-}
-''', [StaticTypeWarningCode.UNDEFINED_METHOD]);
-  }
-
-  test_undefinedMethod_typeLiteral_conditionalAccess() async {
-    // When applied to a type literal, the conditional access operator '?.'
-    // cannot be used to access instance methods of Type.
-    await assertErrorsInCode('''
-class A {}
-f() => A?.toString();
-''', [StaticTypeWarningCode.UNDEFINED_METHOD]);
-  }
-
   test_undefinedMethodWithConstructor() async {
-    // TODO(brianwilkerson) We cannot verify in previewDart2 because 'C' could
-    // not be resolved.
-    await assertErrorsInCode(
-        r'''
+    // TODO(brianwilkerson) We cannot verify because 'C' could not be resolved.
+    await assertErrorsInCode(r'''
 class C {
   C.m();
 }
 f() {
   C c = C.m();
-}''',
-        previewDart2
-            ? []
-            : [StaticTypeWarningCode.UNDEFINED_METHOD_WITH_CONSTRUCTOR],
-        verify: !previewDart2);
+}''', [], verify: false);
   }
 
   test_undefinedOperator_indexBoth() async {
@@ -1610,7 +1393,10 @@
 class A {}
 f(A a) {
   a[0]++;
-}''', [StaticTypeWarningCode.UNDEFINED_OPERATOR]);
+}''', [
+      StaticTypeWarningCode.UNDEFINED_OPERATOR,
+      StaticTypeWarningCode.UNDEFINED_OPERATOR,
+    ]);
   }
 
   test_undefinedOperator_indexGetter() async {
@@ -1701,18 +1487,6 @@
 ''', [StaticTypeWarningCode.UNQUALIFIED_REFERENCE_TO_NON_LOCAL_STATIC_MEMBER]);
   }
 
-  test_unqualifiedReferenceToNonLocalStaticMember_method() async {
-    await assertErrorsInCode(r'''
-class A {
-  static void a() {}
-}
-class B extends A {
-  void b() {
-    a();
-  }
-}''', [StaticTypeWarningCode.UNQUALIFIED_REFERENCE_TO_NON_LOCAL_STATIC_MEMBER]);
-  }
-
   test_unqualifiedReferenceToNonLocalStaticMember_setter() async {
     await assertErrorsInCode(r'''
 class A {
@@ -1883,26 +1657,6 @@
     resetWith(options: options);
   }
 
-  test_genericMethodWrongNumberOfTypeArguments() async {
-    Source source = addSource('''
-f() {}
-main() {
-  f<int>();
-}
-''');
-    TestAnalysisResult analysisResult = await computeAnalysisResult(source);
-    assertErrors(
-        source, [StaticTypeWarningCode.WRONG_NUMBER_OF_TYPE_ARGUMENTS_METHOD]);
-    for (AnalysisError error in analysisResult.errors) {
-      if (error.errorCode ==
-          StaticTypeWarningCode.WRONG_NUMBER_OF_TYPE_ARGUMENTS) {
-        expect(error.message,
-            formatList(error.errorCode.message, ['() → dynamic', 0, 1]));
-      }
-    }
-    verify([source]);
-  }
-
   test_legalAsyncGeneratorReturnType_function_supertypeOfStream() async {
     await assertErrorsInCode('''
 import 'dart:async';
diff --git a/pkg/analyzer/test/generated/static_warning_code_driver_test.dart b/pkg/analyzer/test/generated/static_warning_code_driver_test.dart
index adf005d..699954f 100644
--- a/pkg/analyzer/test/generated/static_warning_code_driver_test.dart
+++ b/pkg/analyzer/test/generated/static_warning_code_driver_test.dart
@@ -16,4 +16,8 @@
 class StaticWarningCodeTest_Driver extends StaticWarningCodeTest {
   @override
   bool get enableNewAnalysisDriver => true;
+
+  test_setElementTypeNotAssignable() async {
+    return super.test_setElementTypeNotAssignable();
+  }
 }
diff --git a/pkg/analyzer/test/generated/static_warning_code_test.dart b/pkg/analyzer/test/generated/static_warning_code_test.dart
index 4b7068e..07f6d2f 100644
--- a/pkg/analyzer/test/generated/static_warning_code_test.dart
+++ b/pkg/analyzer/test/generated/static_warning_code_test.dart
@@ -274,24 +274,6 @@
     assertErrors(source, [StaticWarningCode.AMBIGUOUS_IMPORT]);
   }
 
-  test_ambiguousImport_withPrefix() async {
-    Source source = addSource(r'''
-library test;
-import 'lib1.dart' as p;
-import 'lib2.dart' as p;
-main() {
-  p.f();
-}''');
-    addNamedSource("/lib1.dart", r'''
-library lib1;
-f() {}''');
-    addNamedSource("/lib2.dart", r'''
-library lib2;
-f() {}''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticWarningCode.AMBIGUOUS_IMPORT]);
-  }
-
   test_argumentTypeNotAssignable_ambiguousClassName() async {
     // See dartbug.com/19624
     Source source = addNamedSource("/lib1.dart", r'''
@@ -315,10 +297,6 @@
     expect(StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE, error.errorCode);
     String message = error.message;
     expect(message.indexOf("_A") != -1, isTrue);
-    if (!previewDart2) {
-      expect(message.indexOf("lib1.dart") != -1, isTrue);
-      expect(message.indexOf("lib2.dart") != -1, isTrue);
-    }
   }
 
   test_argumentTypeNotAssignable_annotation_namedConstructor() async {
@@ -501,11 +479,7 @@
   acceptFunNumOptBool(funNumBool);
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StrongModeCode.INVALID_CAST_FUNCTION]);
-    } else {
-      assertErrors(source, [StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE]);
-    }
+    assertErrors(source, [StrongModeCode.INVALID_CAST_FUNCTION]);
     verify([source]);
   }
 
@@ -1111,15 +1085,10 @@
   A(String this.x) {}
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [
-        StaticWarningCode.FIELD_INITIALIZING_FORMAL_NOT_ASSIGNABLE,
-        StrongModeCode.INVALID_PARAMETER_DECLARATION
-      ]);
-    } else {
-      assertErrors(
-          source, [StaticWarningCode.FIELD_INITIALIZING_FORMAL_NOT_ASSIGNABLE]);
-    }
+    assertErrors(source, [
+      StaticWarningCode.FIELD_INITIALIZING_FORMAL_NOT_ASSIGNABLE,
+      StrongModeCode.INVALID_PARAMETER_DECLARATION
+    ]);
     verify([source]);
   }
 
@@ -1356,11 +1325,7 @@
 }
 ''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertNoErrors(source);
-    } else {
-      assertErrors(source, [StaticTypeWarningCode.INVALID_ASSIGNMENT]);
-    }
+    assertNoErrors(source);
   }
 
   test_generalizedVoid_interpolateVoidValueError() async {
@@ -1374,51 +1339,6 @@
     assertErrors(source, [StaticWarningCode.USE_OF_VOID_RESULT]);
   }
 
-  test_generalizedVoid_invocationOfVoidFieldError() async {
-    Source source = addSource(r'''
-class Container<T>{
-  T value;
-}
-void main(Container<void> voidContainer) {
-  voidContainer.value();
-}
-''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticWarningCode.USE_OF_VOID_RESULT]);
-  }
-
-  test_generalizedVoid_invocationOfVoidLocalError() async {
-    Source source = addSource(r'''
-void main() {
-  void x;
-  x();
-}
-''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticWarningCode.USE_OF_VOID_RESULT]);
-  }
-
-  test_generalizedVoid_invocationOfVoidResultError() async {
-    Source source = addSource(r'''
-void main() {
-  main()();
-}
-''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticWarningCode.USE_OF_VOID_RESULT]);
-  }
-
-  test_generalizedVoid_invocationOfVoidToplevelError() async {
-    Source source = addSource(r'''
-void x;
-void main() {
-  x();
-}
-''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticWarningCode.USE_OF_VOID_RESULT]);
-  }
-
   test_generalizedVoid_negateVoidValueError() async {
     Source source = addSource(r'''
 void main() {
@@ -1533,28 +1453,6 @@
     assertErrors(source, [StaticWarningCode.USE_OF_VOID_RESULT]);
   }
 
-  test_generalizedVoid_useOfVoidCallMethodError() async {
-    Source source = addSource(r'''
-void main() {
-  void x;
-  x.toString();
-}
-''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticWarningCode.USE_OF_VOID_RESULT]);
-  }
-
-  test_generalizedVoid_useOfVoidCallMethodWithNullError() async {
-    Source source = addSource(r'''
-void main() {
-  void x;
-  x?.toString();
-}
-''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticWarningCode.USE_OF_VOID_RESULT]);
-  }
-
   test_generalizedVoid_useOfVoidCallSetterError() async {
     Source source = addSource(r'''
 void main() {
@@ -1566,17 +1464,6 @@
     assertErrors(source, [StaticWarningCode.USE_OF_VOID_RESULT]);
   }
 
-  test_generalizedVoid_useOfVoidCascadeError() async {
-    Source source = addSource(r'''
-void main() {
-  void x;
-  x..toString();
-}
-''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticWarningCode.USE_OF_VOID_RESULT]);
-  }
-
   test_generalizedVoid_useOfVoidCastsOk() async {
     Source source = addSource(r'''
 void use(dynamic x) { }
@@ -2257,13 +2144,7 @@
 }
 ''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertNoErrors(source);
-    } else {
-      assertErrors(source, [
-        StaticWarningCode.INVALID_OVERRIDE_DIFFERENT_DEFAULT_VALUES_POSITIONAL
-      ]);
-    }
+    assertNoErrors(source);
     verify([source]);
   }
 
@@ -2280,12 +2161,7 @@
 }
 ''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertNoErrors(source);
-    } else {
-      assertErrors(source,
-          [StaticWarningCode.INVALID_OVERRIDE_DIFFERENT_DEFAULT_VALUES_NAMED]);
-    }
+    assertNoErrors(source);
     verify([source]);
   }
 
@@ -2368,12 +2244,7 @@
   m({int p : 1}) {}
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertNoErrors(source);
-    } else {
-      assertErrors(source,
-          [StaticWarningCode.INVALID_OVERRIDE_DIFFERENT_DEFAULT_VALUES_NAMED]);
-    }
+    assertNoErrors(source);
     verify([source]);
   }
 
@@ -2386,13 +2257,7 @@
   m([int p = 1]) {}
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertNoErrors(source);
-    } else {
-      assertErrors(source, [
-        StaticWarningCode.INVALID_OVERRIDE_DIFFERENT_DEFAULT_VALUES_POSITIONAL
-      ]);
-    }
+    assertNoErrors(source);
     verify([source]);
   }
 
@@ -2405,11 +2270,7 @@
   m({a}) {}
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
-    } else {
-      assertErrors(source, [StaticWarningCode.INVALID_OVERRIDE_NAMED]);
-    }
+    assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
     verify([source]);
   }
 
@@ -2422,11 +2283,7 @@
   m({a, c}) {}
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
-    } else {
-      assertErrors(source, [StaticWarningCode.INVALID_OVERRIDE_NAMED]);
-    }
+    assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
     verify([source]);
   }
 
@@ -2439,11 +2296,7 @@
   m([a]) {}
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
-    } else {
-      assertErrors(source, [StaticWarningCode.INVALID_OVERRIDE_POSITIONAL]);
-    }
+    assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
     verify([source]);
   }
 
@@ -2456,11 +2309,7 @@
   m(a, b, [c]) {}
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
-    } else {
-      assertErrors(source, [StaticWarningCode.INVALID_OVERRIDE_POSITIONAL]);
-    }
+    assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
     verify([source]);
   }
 
@@ -2473,11 +2322,7 @@
   m(a, [c, d]) {}
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
-    } else {
-      assertErrors(source, [StaticWarningCode.INVALID_OVERRIDE_POSITIONAL]);
-    }
+    assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
     verify([source]);
   }
 
@@ -2490,11 +2335,7 @@
   m(a, b) {}
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
-    } else {
-      assertErrors(source, [StaticWarningCode.INVALID_OVERRIDE_REQUIRED]);
-    }
+    assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
     verify([source]);
   }
 
@@ -2507,12 +2348,7 @@
   void set s(String v) {}
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
-    } else {
-      assertErrors(source,
-          [StaticWarningCode.INVALID_SETTER_OVERRIDE_NORMAL_PARAM_TYPE]);
-    }
+    assertErrors(source, [CompileTimeErrorCode.INVALID_OVERRIDE]);
     verify([source]);
   }
 
@@ -2529,15 +2365,10 @@
   set setter14(String _) => null;
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [
-        CompileTimeErrorCode.INVALID_OVERRIDE,
-        CompileTimeErrorCode.INVALID_OVERRIDE,
-      ]);
-    } else {
-      assertErrors(source,
-          [StaticWarningCode.INVALID_SETTER_OVERRIDE_NORMAL_PARAM_TYPE]);
-    }
+    assertErrors(source, [
+      CompileTimeErrorCode.INVALID_OVERRIDE,
+      CompileTimeErrorCode.INVALID_OVERRIDE,
+    ]);
     verify([source]);
   }
 
@@ -2555,15 +2386,10 @@
   set setter14(String _) => null;
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [
-        CompileTimeErrorCode.INVALID_OVERRIDE,
-        CompileTimeErrorCode.INVALID_OVERRIDE
-      ]);
-    } else {
-      assertErrors(source,
-          [StaticWarningCode.INVALID_SETTER_OVERRIDE_NORMAL_PARAM_TYPE]);
-    }
+    assertErrors(source, [
+      CompileTimeErrorCode.INVALID_OVERRIDE,
+      CompileTimeErrorCode.INVALID_OVERRIDE
+    ]);
     verify([source]);
   }
 
@@ -2579,15 +2405,10 @@
   set s(double d) {}
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [
-        CompileTimeErrorCode.INVALID_OVERRIDE,
-        CompileTimeErrorCode.INVALID_OVERRIDE
-      ]);
-    } else {
-      assertErrors(source,
-          [StaticWarningCode.INVALID_SETTER_OVERRIDE_NORMAL_PARAM_TYPE]);
-    }
+    assertErrors(source, [
+      CompileTimeErrorCode.INVALID_OVERRIDE,
+      CompileTimeErrorCode.INVALID_OVERRIDE
+    ]);
     verify([source]);
   }
 
@@ -2653,14 +2474,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertErrors(source, [StaticWarningCode.RETURN_WITHOUT_VALUE]);
-    } else {
-      assertErrors(source, [
-        StaticWarningCode.MIXED_RETURN_TYPES,
-        StaticWarningCode.MIXED_RETURN_TYPES
-      ]);
-    }
+    assertErrors(source, [StaticWarningCode.RETURN_WITHOUT_VALUE]);
     verify([source]);
   }
 
@@ -3451,11 +3265,15 @@
 Null f() {return;}
 ''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertNoErrors(source);
-    } else {
-      assertErrors(source, [StaticWarningCode.RETURN_WITHOUT_VALUE]);
-    }
+    assertNoErrors(source);
+  }
+
+  @failingTest
+  test_setElementTypeNotAssignable() async {
+    Source source = addSource("var v = <String>{42};");
+    await computeAnalysisResult(source);
+    assertErrors(source, [StaticWarningCode.SET_ELEMENT_TYPE_NOT_ASSIGNABLE]);
+    verify([source]);
   }
 
   test_staticAccessToInstanceMember_method_invocation() async {
@@ -3813,11 +3631,7 @@
   }
 }''');
     await computeAnalysisResult(source);
-    if (previewDart2) {
-      assertNoErrors(source);
-    } else {
-      assertErrors(source, [StaticWarningCode.ARGUMENT_TYPE_NOT_ASSIGNABLE]);
-    }
+    assertNoErrors(source);
   }
 
   test_typeTestNonType() async {
@@ -3974,29 +3788,6 @@
     assertErrors(source, [StaticTypeWarningCode.UNDEFINED_GETTER]);
   }
 
-  test_undefinedStaticMethodOrGetter_method() async {
-    Source source = addSource(r'''
-class C {}
-f(var p) {
-  f(C.m());
-}''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_METHOD]);
-  }
-
-  test_undefinedStaticMethodOrGetter_method_inSuperclass() async {
-    Source source = addSource(r'''
-class S {
-  static m() {}
-}
-class C extends S {}
-f(var p) {
-  f(C.m());
-}''');
-    await computeAnalysisResult(source);
-    assertErrors(source, [StaticTypeWarningCode.UNDEFINED_METHOD]);
-  }
-
   test_undefinedStaticMethodOrGetter_setter_inSuperclass() async {
     Source source = addSource(r'''
 class S {
diff --git a/pkg/analyzer/test/generated/strong_mode_test.dart b/pkg/analyzer/test/generated/strong_mode_test.dart
index 70a60b6..6b9af7e 100644
--- a/pkg/analyzer/test/generated/strong_mode_test.dart
+++ b/pkg/analyzer/test/generated/strong_mode_test.dart
@@ -2909,7 +2909,7 @@
 }
 
 /// Test cases for [StrongModeStaticTypeAnalyzer2Test]
-abstract class StrongModeStaticTypeAnalyzer2TestCases
+mixin StrongModeStaticTypeAnalyzer2TestCases
     implements StaticTypeAnalyzer2TestShared {
   void expectStaticInvokeType(String search, String type) {
     var invocation = findIdentifier(search).parent as MethodInvocation;
@@ -2927,17 +2927,6 @@
     expectInitializerType('foo', 'int');
   }
 
-  test_dynamicObjectMethod_toString() async {
-    String code = r'''
-main() {
-  dynamic a = null;
-  var foo = a.toString();
-}
-''';
-    await resolveTestUnit(code);
-    expectInitializerType('foo', 'String');
-  }
-
   test_futureOr_promotion1() async {
     // Test that promotion from FutureOr<T> to T works for concrete types
     String code = r'''
@@ -3612,22 +3601,6 @@
     verify([source]);
   }
 
-  test_genericMethod_partiallyAppliedErrorWithBound() async {
-    await resolveTestUnit(r'''
-void f<X extends List, Y>() => null;
-
-void test() {
-  f<int>();
-}
-''', noErrors: false);
-    assertErrors(testSource, [
-      // Make sure to catch both the missing parameter:
-      StaticTypeWarningCode.WRONG_NUMBER_OF_TYPE_ARGUMENTS_METHOD,
-      // And the incorrect parameter:
-      StaticTypeWarningCode.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS
-    ]);
-  }
-
   test_genericMethod_propagatedType_promotion() async {
     // Regression test for:
     // https://github.com/dart-lang/sdk/issues/25340
diff --git a/pkg/analyzer/test/generated/test_all.dart b/pkg/analyzer/test/generated/test_all.dart
index 3b976b4..ac07574 100644
--- a/pkg/analyzer/test/generated/test_all.dart
+++ b/pkg/analyzer/test/generated/test_all.dart
@@ -5,7 +5,6 @@
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import 'all_the_rest_test.dart' as all_the_rest;
-import 'bazel_test.dart' as bazel_test;
 import 'checked_mode_compile_time_error_code_driver_test.dart'
     as checked_mode_compile_time_error_code_driver_test;
 import 'checked_mode_compile_time_error_code_test.dart'
@@ -19,7 +18,6 @@
 import 'engine_test.dart' as engine_test;
 import 'error_suppression_driver_test.dart' as error_suppression_driver_test;
 import 'error_suppression_test.dart' as error_suppression_test;
-import 'gn_test.dart' as gn_test;
 import 'hint_code_driver_test.dart' as hint_code_driver_test;
 import 'hint_code_test.dart' as hint_code_test;
 import 'inheritance_manager_test.dart' as inheritance_manager_test;
@@ -31,8 +29,6 @@
 import 'non_error_resolver_test.dart' as non_error_resolver_test;
 import 'non_hint_code_driver_test.dart' as non_hint_code_driver_test;
 import 'non_hint_code_test.dart' as non_hint_code_test;
-import 'package_build_test.dart' as package_build_test;
-import 'package_test.dart' as package_test;
 import 'parser_fasta_test.dart' as parser_fasta_test;
 import 'parser_test.dart' as parser_test;
 import 'resolver_driver_test.dart' as resolver_driver_test;
@@ -59,7 +55,6 @@
 main() {
   defineReflectiveSuite(() {
     all_the_rest.main();
-    bazel_test.main();
     checked_mode_compile_time_error_code_driver_test.main();
     checked_mode_compile_time_error_code_test.main();
     compile_time_error_code_driver_test.main();
@@ -70,7 +65,6 @@
     engine_test.main();
     error_suppression_driver_test.main();
     error_suppression_test.main();
-    gn_test.main();
     hint_code_driver_test.main();
     hint_code_test.main();
     inheritance_manager_test.main();
@@ -82,8 +76,6 @@
     non_error_resolver_test.main();
     non_hint_code_driver_test.main();
     non_hint_code_test.main();
-    package_build_test.main();
-    package_test.main();
     parser_fasta_test.main();
     parser_test.main();
     resolver_driver_test.main();
diff --git a/pkg/analyzer/test/generated/test_support.dart b/pkg/analyzer/test/generated/test_support.dart
index 8a6e9d4..e44dd22 100644
--- a/pkg/analyzer/test/generated/test_support.dart
+++ b/pkg/analyzer/test/generated/test_support.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -133,7 +133,7 @@
       throw new ArgumentError("Not found '$prefix'.");
     }
     AstNode node = new NodeLocator(offset).searchWithin(root);
-    return node.getAncestor(predicate);
+    return node.thisOrAncestorMatching(predicate);
   }
 
   /**
diff --git a/pkg/analyzer/test/generated/type_system_test.dart b/pkg/analyzer/test/generated/type_system_test.dart
index 67110dd..b682c79 100644
--- a/pkg/analyzer/test/generated/type_system_test.dart
+++ b/pkg/analyzer/test/generated/type_system_test.dart
@@ -1,25 +1,26 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // Tests related to the [TypeSystem] class.
 
-import 'package:analyzer/analyzer.dart'
-    show ErrorReporter, ParameterKind, StrongModeCode;
 import 'package:analyzer/dart/ast/standard_ast_factory.dart' show astFactory;
 import 'package:analyzer/dart/ast/token.dart' show Keyword;
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
+import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/dart/ast/token.dart' show KeywordToken;
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/type.dart';
+import 'package:analyzer/src/error/codes.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/source.dart'
     show NonExistingSource, UriKind;
 import 'package:analyzer/src/generated/testing/element_factory.dart';
 import 'package:analyzer/src/generated/testing/test_type_provider.dart';
+import 'package:analyzer/src/generated/utilities_dart.dart';
 import 'package:path/path.dart' show toUri;
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
diff --git a/pkg/analyzer/test/parse_compilation_unit_test.dart b/pkg/analyzer/test/parse_compilation_unit_test.dart
index a916d00..74a0179 100644
--- a/pkg/analyzer/test/parse_compilation_unit_test.dart
+++ b/pkg/analyzer/test/parse_compilation_unit_test.dart
@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+// ignore: deprecated_member_use
 import 'package:analyzer/analyzer.dart';
 import 'package:test/test.dart';
 
diff --git a/pkg/analyzer/test/source/sdk_ext_test.dart b/pkg/analyzer/test/source/sdk_ext_test.dart
index b09c36b..4f542d1 100644
--- a/pkg/analyzer/test/source/sdk_ext_test.dart
+++ b/pkg/analyzer/test/source/sdk_ext_test.dart
@@ -3,8 +3,8 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/source/sdk_ext.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -15,9 +15,7 @@
 }
 
 @reflectiveTest
-class SdkExtUriResolverTest {
-  MemoryResourceProvider resourceProvider;
-
+class SdkExtUriResolverTest with ResourceProviderMixin {
   void setUp() {
     String joinAndEscape(List<String> components) {
       return resourceProvider.pathContext
@@ -25,10 +23,9 @@
           .replaceAll(r'\', r'\\');
     }
 
-    resourceProvider = new MemoryResourceProvider();
-    resourceProvider.newFolder(resourceProvider.convertPath('/empty'));
-    resourceProvider.newFolder(resourceProvider.convertPath('/tmp'));
-    resourceProvider.newFile(resourceProvider.convertPath('/tmp/_sdkext'), '''
+    newFolder('/empty');
+    newFolder('/tmp');
+    newFile('/tmp/_sdkext', content: '''
 {
   "dart:fox": "slippy.dart",
   "dart:bear": "grizzly.dart",
@@ -41,47 +38,37 @@
   test_create_badJSON() {
     var resolver = new SdkExtUriResolver(null);
     resolver.addSdkExt(r'''{{{,{{}}},}}''', null);
-    expect(resolver.length, equals(0));
+    expect(resolver.length, 0);
   }
 
   test_create_noSdkExtPackageMap() {
     var resolver = new SdkExtUriResolver({
-      'fox': <Folder>[
-        resourceProvider.getFolder(resourceProvider.convertPath('/empty'))
-      ]
+      'fox': <Folder>[getFolder('/empty')]
     });
-    expect(resolver.length, equals(0));
+    expect(resolver.length, 0);
   }
 
   test_create_nullPackageMap() {
     var resolver = new SdkExtUriResolver(null);
-    expect(resolver.length, equals(0));
+    expect(resolver.length, 0);
   }
 
   test_create_sdkExtPackageMap() {
     var resolver = new SdkExtUriResolver({
-      'fox': <Folder>[
-        resourceProvider.newFolder(resourceProvider.convertPath('/tmp'))
-      ]
+      'fox': <Folder>[newFolder('/tmp')]
     });
     // We have four mappings.
-    expect(resolver.length, equals(4));
+    expect(resolver.length, 4);
     // Check that they map to the correct paths.
-    expect(resolver['dart:fox'],
-        equals(resourceProvider.convertPath('/tmp/slippy.dart')));
-    expect(resolver['dart:bear'],
-        equals(resourceProvider.convertPath('/tmp/grizzly.dart')));
-    expect(resolver['dart:relative'],
-        equals(resourceProvider.convertPath('/relative.dart')));
-    expect(resolver['dart:deep'],
-        equals(resourceProvider.convertPath('/tmp/deep/directory/file.dart')));
+    expect(resolver['dart:fox'], convertPath('/tmp/slippy.dart'));
+    expect(resolver['dart:bear'], convertPath('/tmp/grizzly.dart'));
+    expect(resolver['dart:relative'], convertPath('/relative.dart'));
+    expect(resolver['dart:deep'], convertPath('/tmp/deep/directory/file.dart'));
   }
 
   test_restoreAbsolute() {
     var resolver = new SdkExtUriResolver({
-      'fox': <Folder>[
-        resourceProvider.newFolder(resourceProvider.convertPath('/tmp'))
-      ]
+      'fox': <Folder>[newFolder('/tmp')]
     });
     var source = resolver.resolveAbsolute(Uri.parse('dart:fox'));
     expect(source, isNotNull);
@@ -89,8 +76,8 @@
     var restoreUri = resolver.restoreAbsolute(source);
     expect(restoreUri, isNotNull);
     // Verify that it is 'dart:fox'.
-    expect(restoreUri.toString(), equals('dart:fox'));
-    expect(restoreUri.scheme, equals('dart'));
-    expect(restoreUri.path, equals('fox'));
+    expect(restoreUri.toString(), 'dart:fox');
+    expect(restoreUri.scheme, 'dart');
+    expect(restoreUri.path, 'fox');
   }
 }
diff --git a/pkg/analyzer/test/src/abstract_single_unit.dart b/pkg/analyzer/test/src/abstract_single_unit.dart
index f8fbb79..164b2f5 100644
--- a/pkg/analyzer/test/src/abstract_single_unit.dart
+++ b/pkg/analyzer/test/src/abstract_single_unit.dart
@@ -51,7 +51,7 @@
   AstNode findNodeAtOffset(int offset, [Predicate<AstNode> predicate]) {
     AstNode result = new NodeLocator(offset).searchWithin(testUnit);
     if (result != null && predicate != null) {
-      result = result.getAncestor(predicate);
+      result = result.thisOrAncestorMatching(predicate);
     }
     return result;
   }
diff --git a/pkg/analyzer/test/src/command_line/arguments_test.dart b/pkg/analyzer/test/src/command_line/arguments_test.dart
index c612c12..3662f70 100644
--- a/pkg/analyzer/test/src/command_line/arguments_test.dart
+++ b/pkg/analyzer/test/src/command_line/arguments_test.dart
@@ -2,12 +2,12 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/command_line/arguments.dart';
 import 'package:analyzer/src/context/builder.dart';
 import 'package:analyzer/src/dart/sdk/sdk.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:args/args.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
@@ -19,27 +19,25 @@
 }
 
 @reflectiveTest
-class ArgumentsTest {
+class ArgumentsTest with ResourceProviderMixin {
   void test_createContextBuilderOptions_all() {
     String dartSdkSummaryPath = 'a';
     String defaultAnalysisOptionsFilePath = 'b';
     String defaultPackageFilePath = 'c';
     String defaultPackagesDirectoryPath = 'd';
-    MemoryResourceProvider provider = new MemoryResourceProvider();
     ArgParser parser = new ArgParser();
     defineAnalysisArguments(parser);
     List<String> args = [
       '--dart-sdk-summary=$dartSdkSummaryPath',
       '-Dfoo=1',
       '-Dbar=2',
-      '--no-declaration-casts',
       '--no-implicit-casts',
       '--no-implicit-dynamic',
       '--options=$defaultAnalysisOptionsFilePath',
       '--packages=$defaultPackageFilePath',
       '--package-root=$defaultPackagesDirectoryPath',
     ];
-    ArgResults result = parse(provider, parser, args);
+    ArgResults result = parse(resourceProvider, parser, args);
     ContextBuilderOptions options = createContextBuilderOptions(result);
     expect(options, isNotNull);
     expect(options.dartSdkSummaryPath, dartSdkSummaryPath);
@@ -54,17 +52,15 @@
     AnalysisOptionsImpl defaultOptions = options.defaultOptions;
     expect(defaultOptions, isNotNull);
     expect(defaultOptions.strongMode, true);
-    expect(defaultOptions.declarationCasts, false);
     expect(defaultOptions.implicitCasts, false);
     expect(defaultOptions.implicitDynamic, false);
   }
 
   void test_createContextBuilderOptions_none() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
     ArgParser parser = new ArgParser();
     defineAnalysisArguments(parser);
     List<String> args = [];
-    ArgResults result = parse(provider, parser, args);
+    ArgResults result = parse(resourceProvider, parser, args);
     ContextBuilderOptions options = createContextBuilderOptions(result);
     expect(options, isNotNull);
     expect(options.dartSdkSummaryPath, isNull);
@@ -74,79 +70,61 @@
     expect(options.defaultPackagesDirectoryPath, isNull);
     AnalysisOptionsImpl defaultOptions = options.defaultOptions;
     expect(defaultOptions, isNotNull);
-    expect(defaultOptions.strongMode, defaultOptions.previewDart2);
-    expect(defaultOptions.declarationCasts, true);
+    expect(defaultOptions.strongMode, true);
     expect(defaultOptions.implicitCasts, true);
     expect(defaultOptions.implicitDynamic, true);
   }
 
   void test_createDartSdkManager_noPath_noSummaries() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
     ArgParser parser = new ArgParser();
     defineAnalysisArguments(parser);
     List<String> args = [];
-    ArgResults result = parse(provider, parser, args);
-    DartSdkManager manager = createDartSdkManager(provider, false, result);
+    ArgResults result = parse(resourceProvider, parser, args);
+    DartSdkManager manager =
+        createDartSdkManager(resourceProvider, false, result);
     expect(manager, isNotNull);
     expect(manager.defaultSdkDirectory,
-        FolderBasedDartSdk.defaultSdkDirectory(provider));
+        FolderBasedDartSdk.defaultSdkDirectory(resourceProvider));
     expect(manager.canUseSummaries, false);
   }
 
   void test_createDartSdkManager_noPath_summaries() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
     ArgParser parser = new ArgParser();
     defineAnalysisArguments(parser);
     List<String> args = [];
-    ArgResults result = parse(provider, parser, args);
-    DartSdkManager manager = createDartSdkManager(provider, true, result);
+    ArgResults result = parse(resourceProvider, parser, args);
+    DartSdkManager manager =
+        createDartSdkManager(resourceProvider, true, result);
     expect(manager, isNotNull);
     expect(manager.defaultSdkDirectory,
-        FolderBasedDartSdk.defaultSdkDirectory(provider));
+        FolderBasedDartSdk.defaultSdkDirectory(resourceProvider));
     expect(manager.canUseSummaries, true);
   }
 
   void test_createDartSdkManager_path_noSummaries() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
     ArgParser parser = new ArgParser();
     defineAnalysisArguments(parser);
     List<String> args = ['--dart-sdk=x'];
-    ArgResults result = parse(provider, parser, args);
-    DartSdkManager manager = createDartSdkManager(provider, false, result);
+    ArgResults result = parse(resourceProvider, parser, args);
+    DartSdkManager manager =
+        createDartSdkManager(resourceProvider, false, result);
     expect(manager, isNotNull);
     expect(manager.defaultSdkDirectory, 'x');
     expect(manager.canUseSummaries, false);
   }
 
   void test_createDartSdkManager_path_summaries() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
     ArgParser parser = new ArgParser();
     defineAnalysisArguments(parser);
     List<String> args = ['--dart-sdk=y'];
-    ArgResults result = parse(provider, parser, args);
-    DartSdkManager manager = createDartSdkManager(provider, true, result);
+    ArgResults result = parse(resourceProvider, parser, args);
+    DartSdkManager manager =
+        createDartSdkManager(resourceProvider, true, result);
     expect(manager, isNotNull);
     expect(manager.defaultSdkDirectory, 'y');
     expect(manager.canUseSummaries, true);
   }
 
-  void test_declarationCast_noImplicitCast() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
-    ArgParser parser = new ArgParser();
-    defineAnalysisArguments(parser);
-    List<String> args = [
-      '--declaration-casts',
-      '--no-implicit-casts',
-    ];
-    ArgResults result = parse(provider, parser, args);
-    ContextBuilderOptions options = createContextBuilderOptions(result);
-    expect(options, isNotNull);
-    AnalysisOptionsImpl defaultOptions = options.defaultOptions;
-    expect(defaultOptions, isNotNull);
-    expect(defaultOptions.declarationCasts, true);
-    expect(defaultOptions.implicitCasts, false);
-  }
-
   void test_defineAnalysisArguments() {
     ArgParser parser = new ArgParser();
     defineAnalysisArguments(parser);
@@ -179,62 +157,40 @@
     expect(result, orderedEquals(['--a', '--c=0', '-e=2', '-f', 'bar']));
   }
 
-  void test_noAssignmentCast() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
+  void test_implicitCast() {
     ArgParser parser = new ArgParser();
     defineAnalysisArguments(parser);
     List<String> args = [
-      '--no-declaration-casts',
-    ];
-    ArgResults result = parse(provider, parser, args);
-    ContextBuilderOptions options = createContextBuilderOptions(result);
-    expect(options, isNotNull);
-    AnalysisOptionsImpl defaultOptions = options.defaultOptions;
-    expect(defaultOptions, isNotNull);
-    expect(defaultOptions.declarationCasts, false);
-    expect(defaultOptions.implicitCasts, true);
-  }
-
-  void test_noAssignmentCast_implicitCast() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
-    ArgParser parser = new ArgParser();
-    defineAnalysisArguments(parser);
-    List<String> args = [
-      '--no-declaration-casts',
       '--implicit-casts',
     ];
-    ArgResults result = parse(provider, parser, args);
+    ArgResults result = parse(resourceProvider, parser, args);
     ContextBuilderOptions options = createContextBuilderOptions(result);
     expect(options, isNotNull);
     AnalysisOptionsImpl defaultOptions = options.defaultOptions;
     expect(defaultOptions, isNotNull);
-    expect(defaultOptions.declarationCasts, false);
     expect(defaultOptions.implicitCasts, true);
   }
 
   void test_noImplicitCast() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
     ArgParser parser = new ArgParser();
     defineAnalysisArguments(parser);
     List<String> args = [
       '--no-implicit-casts',
     ];
-    ArgResults result = parse(provider, parser, args);
+    ArgResults result = parse(resourceProvider, parser, args);
     ContextBuilderOptions options = createContextBuilderOptions(result);
     expect(options, isNotNull);
     AnalysisOptionsImpl defaultOptions = options.defaultOptions;
     expect(defaultOptions, isNotNull);
-    expect(defaultOptions.declarationCasts, false);
     expect(defaultOptions.implicitCasts, false);
   }
 
   void test_parse_noReplacement_noIgnored() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
     ArgParser parser = new ArgParser();
     parser.addFlag('xx');
     parser.addOption('yy');
     List<String> args = ['--xx', '--yy=abc', 'foo', 'bar'];
-    ArgResults result = parse(provider, parser, args);
+    ArgResults result = parse(resourceProvider, parser, args);
     expect(result, isNotNull);
     expect(result['xx'], true);
     expect(result['yy'], 'abc');
@@ -242,17 +198,15 @@
   }
 
   void test_preprocessArgs_noReplacement() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
     List<String> original = ['--xx' '--yy' 'baz'];
-    List<String> result = preprocessArgs(provider, original);
+    List<String> result = preprocessArgs(resourceProvider, original);
     expect(result, orderedEquals(original));
     expect(identical(original, result), isFalse);
   }
 
   void test_preprocessArgs_replacement_exists() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
-    String filePath = provider.convertPath('/args.txt');
-    provider.newFile(filePath, '''
+    String filePath = convertPath('/args.txt');
+    newFile(filePath, content: '''
 -a
 --xx
 
@@ -260,16 +214,15 @@
 bar
 ''');
     List<String> result =
-        preprocessArgs(provider, ['--preserved', '@$filePath']);
+        preprocessArgs(resourceProvider, ['--preserved', '@$filePath']);
     expect(result, orderedEquals(['--preserved', '-a', '--xx', 'foo', 'bar']));
   }
 
   void test_preprocessArgs_replacement_nonexistent() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
-    String filePath = provider.convertPath('/args.txt');
+    String filePath = convertPath('/args.txt');
     List<String> args = ['ignored', '@$filePath'];
     try {
-      preprocessArgs(provider, args);
+      preprocessArgs(resourceProvider, args);
       fail('Expect exception');
     } on Exception catch (e) {
       expect(e.toString(), contains('Failed to read file'));
@@ -278,10 +231,9 @@
   }
 
   void test_preprocessArgs_replacement_notLast() {
-    MemoryResourceProvider provider = new MemoryResourceProvider();
-    String filePath = provider.convertPath('/args.txt');
+    String filePath = convertPath('/args.txt');
     List<String> args = ['a', '@$filePath', 'b'];
-    List<String> result = preprocessArgs(provider, args);
+    List<String> result = preprocessArgs(resourceProvider, args);
     expect(result, orderedEquals(args));
   }
 }
diff --git a/pkg/analyzer/test/src/context/abstract_context.dart b/pkg/analyzer/test/src/context/abstract_context.dart
index eb77d7e..131646e 100644
--- a/pkg/analyzer/test/src/context/abstract_context.dart
+++ b/pkg/analyzer/test/src/context/abstract_context.dart
@@ -6,7 +6,6 @@
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/visitor.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/context/context.dart';
 import 'package:analyzer/src/file_system/file_system.dart';
@@ -15,12 +14,12 @@
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/task/api/model.dart';
 import 'package:analyzer/src/task/driver.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:plugin/manager.dart';
 import 'package:plugin/plugin.dart';
 import 'package:test/test.dart';
 
-import 'mock_sdk.dart';
-
 /**
  * Finds an [Element] with the given [name].
  */
@@ -43,12 +42,7 @@
  */
 typedef void _ElementVisitorFunction(Element element);
 
-class AbstractContextTest {
-  static final MockSdk SHARED_MOCK_SDK = new MockSdk();
-  static final MockSdk SHARED_STRONG_MOCK_SDK = new MockSdk();
-
-  MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
-
+class AbstractContextTest with ResourceProviderMixin {
   DartSdk sdk;
   SourceFactory sourceFactory;
   AnalysisContextImpl context;
@@ -125,8 +119,7 @@
   DartSdk createDartSdk() => new MockSdk(resourceProvider: resourceProvider);
 
   Source newSource(String path, [String content = '']) {
-    File file =
-        resourceProvider.newFile(resourceProvider.convertPath(path), content);
+    File file = newFile(path, content: content);
     return file.createSource();
   }
 
diff --git a/pkg/analyzer/test/src/context/builder_test.dart b/pkg/analyzer/test/src/context/builder_test.dart
index 45d21f0..3594512 100644
--- a/pkg/analyzer/test/src/context/builder_test.dart
+++ b/pkg/analyzer/test/src/context/builder_test.dart
@@ -1,15 +1,13 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/command_line/arguments.dart';
 import 'package:analyzer/src/context/builder.dart';
 import 'package:analyzer/src/context/context_root.dart';
 import 'package:analyzer/src/context/source.dart';
 import 'package:analyzer/src/file_system/file_system.dart';
-import 'package:analyzer/src/generated/bazel.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
@@ -17,6 +15,9 @@
 import 'package:analyzer/src/lint/registry.dart';
 import 'package:analyzer/src/services/lint.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
+import 'package:analyzer/src/workspace/bazel.dart';
 import 'package:args/args.dart';
 import 'package:package_config/packages.dart';
 import 'package:package_config/src/packages_impl.dart';
@@ -26,7 +27,6 @@
 
 import '../../embedder_tests.dart';
 import '../../generated/test_support.dart';
-import 'mock_sdk.dart';
 
 main() {
   defineReflectiveSuite(() {
@@ -36,17 +36,7 @@
 }
 
 @reflectiveTest
-class ContextBuilderTest extends EngineTestCase {
-  /**
-   * The resource provider to be used by tests.
-   */
-  MemoryResourceProvider resourceProvider;
-
-  /**
-   * The path context used to manipulate file paths.
-   */
-  path.Context pathContext;
-
+class ContextBuilderTest extends EngineTestCase with ResourceProviderMixin {
   /**
    * The SDK manager used by the tests;
    */
@@ -79,15 +69,15 @@
   _MockLintRule _mockPublicMemberApiDocs;
 
   Uri convertedDirectoryUri(String directoryPath) {
-    return new Uri.directory(resourceProvider.convertPath(directoryPath),
-        windows: pathContext.style == path.windows.style);
+    return new Uri.directory(convertPath(directoryPath),
+        windows: resourceProvider.pathContext.style == path.windows.style);
   }
 
   void createDefaultSdk(Folder sdkDir) {
-    defaultSdkPath = pathContext.join(sdkDir.path, 'default', 'sdk');
-    String librariesFilePath = pathContext.join(defaultSdkPath, 'lib',
-        '_internal', 'sdk_library_metadata', 'lib', 'libraries.dart');
-    resourceProvider.newFile(librariesFilePath, r'''
+    defaultSdkPath = join(sdkDir.path, 'default', 'sdk');
+    String librariesFilePath = join(defaultSdkPath, 'lib', '_internal',
+        'sdk_library_metadata', 'lib', 'libraries.dart');
+    newFile(librariesFilePath, content: r'''
 const Map<String, LibraryInfo> libraries = const {
   "async": const LibraryInfo("async/async.dart"),
   "core": const LibraryInfo("core/core.dart"),
@@ -98,20 +88,17 @@
         options: builderOptions);
   }
 
-  void createFile(String path, String content) {
-    resourceProvider.newFile(path, content);
-  }
-
   @override
   void setUp() {
-    resourceProvider = new MemoryResourceProvider();
-    pathContext = resourceProvider.pathContext;
     new MockSdk(resourceProvider: resourceProvider);
-    sdkManager =
-        new DartSdkManager(resourceProvider.convertPath('/sdk'), false);
+    sdkManager = new DartSdkManager(convertPath('/sdk'), false);
     contentCache = new ContentCache();
-    builder = new ContextBuilder(resourceProvider, sdkManager, contentCache,
-        options: builderOptions);
+    builder = new ContextBuilder(
+      resourceProvider,
+      sdkManager,
+      contentCache,
+      options: builderOptions,
+    );
   }
 
   @failingTest
@@ -131,11 +118,9 @@
     expected.lint = true;
     expected.lintRules = Registry.ruleRegistry.defaultRules;
 
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, '''
-''');
+    String path = convertPath('/some/directory/path');
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath);
 
     AnalysisOptions options = builder.getAnalysisOptions(path);
     _expectEqualOptions(options, expected);
@@ -155,10 +140,9 @@
       Registry.ruleRegistry['mock_lint_rule'],
     ];
 
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, '''
+    String path = convertPath('/some/directory/path');
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath, content: '''
 linter:
   rules:
     - mock_lint_rule
@@ -181,10 +165,9 @@
       Registry.ruleRegistry['mock_lint_rule'],
     ];
 
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, '''
+    String path = convertPath('/some/directory/path');
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath, content: '''
 linter:
   rules:
     - mock_lint_rule
@@ -207,10 +190,9 @@
       Registry.ruleRegistry['mock_lint_rule'],
     ];
 
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, '''
+    String path = convertPath('/some/directory/path');
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath, content: '''
 linter:
   rules:
     - mock_lint_rule
@@ -231,10 +213,9 @@
     expected.lint = false;
     expected.lintRules = <LintRule>[];
 
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, '''
+    String path = convertPath('/some/directory/path');
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath, content: '''
 ''');
 
     AnalysisOptions options = builder.getAnalysisOptions(path);
@@ -251,15 +232,15 @@
 //        options: createContextBuilderOptions(argResults));
 //
 //    AnalysisOptionsImpl expected = new AnalysisOptionsImpl();
-//    expected.previewDart2 = true;
+//    expected.option = true;
 //
 //    String path = resourceProvider.convertPath('/some/directory/path');
 //    String filePath =
-//        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+//        join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
 //    resourceProvider.newFile(filePath, '''
 //analyzer:
 //  language:
-//    enablePreviewDart2: true
+//    option: true
 //''');
 //
 //    AnalysisOptions options = builder.getAnalysisOptions(path);
@@ -276,11 +257,11 @@
 
   void test_convertPackagesToMap_packages() {
     String fooName = 'foo';
-    String fooPath = resourceProvider.convertPath('/pkg/foo');
-    Uri fooUri = pathContext.toUri(fooPath);
+    String fooPath = convertPath('/pkg/foo');
+    Uri fooUri = resourceProvider.pathContext.toUri(fooPath);
     String barName = 'bar';
-    String barPath = resourceProvider.convertPath('/pkg/bar');
-    Uri barUri = pathContext.toUri(barPath);
+    String barPath = convertPath('/pkg/bar');
+    Uri barUri = resourceProvider.pathContext.toUri(barPath);
 
     MapPackages packages = new MapPackages({fooName: fooUri, barName: barUri});
     Map<String, List<Folder>> result = builder.convertPackagesToMap(packages);
@@ -311,16 +292,16 @@
 
   void test_createPackageMap_fromPackageDirectory_explicit() {
     // Use a package directory that is outside the project directory.
-    String rootPath = resourceProvider.convertPath('/root');
-    String projectPath = pathContext.join(rootPath, 'project');
-    String packageDirPath = pathContext.join(rootPath, 'packages');
+    String rootPath = convertPath('/root');
+    String projectPath = join(rootPath, 'project');
+    String packageDirPath = join(rootPath, 'packages');
     String fooName = 'foo';
-    String fooPath = pathContext.join(packageDirPath, fooName);
+    String fooPath = join(packageDirPath, fooName);
     String barName = 'bar';
-    String barPath = pathContext.join(packageDirPath, barName);
-    resourceProvider.newFolder(projectPath);
-    resourceProvider.newFolder(fooPath);
-    resourceProvider.newFolder(barPath);
+    String barPath = join(packageDirPath, barName);
+    newFolder(projectPath);
+    newFolder(fooPath);
+    newFolder(barPath);
 
     builderOptions.defaultPackagesDirectoryPath = packageDirPath;
 
@@ -334,14 +315,14 @@
 
   void test_createPackageMap_fromPackageDirectory_inRoot() {
     // Use a package directory that is inside the project directory.
-    String projectPath = resourceProvider.convertPath('/root/project');
-    String packageDirPath = pathContext.join(projectPath, 'packages');
+    String projectPath = convertPath('/root/project');
+    String packageDirPath = join(projectPath, 'packages');
     String fooName = 'foo';
-    String fooPath = pathContext.join(packageDirPath, fooName);
+    String fooPath = join(packageDirPath, fooName);
     String barName = 'bar';
-    String barPath = pathContext.join(packageDirPath, barName);
-    resourceProvider.newFolder(fooPath);
-    resourceProvider.newFolder(barPath);
+    String barPath = join(packageDirPath, barName);
+    newFolder(fooPath);
+    newFolder(barPath);
 
     Packages packages = builder.createPackageMap(projectPath);
     expect(packages, isNotNull);
@@ -353,13 +334,13 @@
 
   void test_createPackageMap_fromPackageFile_explicit() {
     // Use a package file that is outside the project directory's hierarchy.
-    String rootPath = resourceProvider.convertPath('/root');
-    String projectPath = pathContext.join(rootPath, 'project');
-    String packageFilePath = pathContext.join(rootPath, 'child', '.packages');
-    resourceProvider.newFolder(projectPath);
+    String rootPath = convertPath('/root');
+    String projectPath = join(rootPath, 'project');
+    String packageFilePath = join(rootPath, 'child', '.packages');
+    newFolder(projectPath);
     Uri fooUri = convertedDirectoryUri('/pkg/foo');
     Uri barUri = convertedDirectoryUri('/pkg/bar');
-    createFile(packageFilePath, '''
+    newFile(packageFilePath, content: '''
 foo:$fooUri
 bar:$barUri
 ''');
@@ -375,13 +356,13 @@
 
   void test_createPackageMap_fromPackageFile_inParentOfRoot() {
     // Use a package file that is inside the parent of the project directory.
-    String rootPath = resourceProvider.convertPath('/root');
-    String projectPath = pathContext.join(rootPath, 'project');
-    String packageFilePath = pathContext.join(rootPath, '.packages');
-    resourceProvider.newFolder(projectPath);
+    String rootPath = convertPath('/root');
+    String projectPath = join(rootPath, 'project');
+    String packageFilePath = join(rootPath, '.packages');
+    newFolder(projectPath);
     Uri fooUri = convertedDirectoryUri('/pkg/foo');
     Uri barUri = convertedDirectoryUri('/pkg/bar');
-    createFile(packageFilePath, '''
+    newFile(packageFilePath, content: '''
 foo:$fooUri
 bar:$barUri
 ''');
@@ -396,13 +377,13 @@
 
   void test_createPackageMap_fromPackageFile_inRoot() {
     // Use a package file that is inside the project directory.
-    String rootPath = resourceProvider.convertPath('/root');
-    String projectPath = pathContext.join(rootPath, 'project');
-    String packageFilePath = pathContext.join(projectPath, '.packages');
-    resourceProvider.newFolder(projectPath);
+    String rootPath = convertPath('/root');
+    String projectPath = join(rootPath, 'project');
+    String packageFilePath = join(projectPath, '.packages');
+    newFolder(projectPath);
     Uri fooUri = convertedDirectoryUri('/pkg/foo');
     Uri barUri = convertedDirectoryUri('/pkg/bar');
-    createFile(packageFilePath, '''
+    newFile(packageFilePath, content: '''
 foo:$fooUri
 bar:$barUri
 ''');
@@ -416,26 +397,24 @@
   }
 
   void test_createPackageMap_none() {
-    String rootPath = resourceProvider.convertPath('/root');
-    resourceProvider.newFolder(rootPath);
+    String rootPath = convertPath('/root');
+    newFolder(rootPath);
     Packages packages = builder.createPackageMap(rootPath);
     expect(packages, same(Packages.noPackages));
   }
 
   void test_createPackageMap_rootDoesNotExist() {
-    String rootPath = resourceProvider.convertPath('/root');
+    String rootPath = convertPath('/root');
     Packages packages = builder.createPackageMap(rootPath);
     expect(packages, same(Packages.noPackages));
   }
 
   void test_createSourceFactory_bazelWorkspace_fileProvider() {
-    String _p(String path) => resourceProvider.convertPath(path);
-
-    String projectPath = _p('/workspace/my/module');
-    resourceProvider.newFile(_p('/workspace/WORKSPACE'), '');
-    resourceProvider.newFolder(_p('/workspace/bazel-bin'));
-    resourceProvider.newFolder(_p('/workspace/bazel-genfiles'));
-    resourceProvider.newFolder(projectPath);
+    String projectPath = convertPath('/workspace/my/module');
+    newFile('/workspace/WORKSPACE');
+    newFolder('/workspace/bazel-bin');
+    newFolder('/workspace/bazel-genfiles');
+    newFolder(projectPath);
 
     AnalysisOptionsImpl options = new AnalysisOptionsImpl();
     SourceFactoryImpl factory =
@@ -447,14 +426,12 @@
   }
 
   void test_createSourceFactory_bazelWorkspace_withPackagesFile() {
-    String _p(String path) => resourceProvider.convertPath(path);
-
-    String projectPath = _p('/workspace/my/module');
-    resourceProvider.newFile(_p('/workspace/WORKSPACE'), '');
-    resourceProvider.newFolder(_p('/workspace/bazel-bin'));
-    resourceProvider.newFolder(_p('/workspace/bazel-genfiles'));
-    resourceProvider.newFolder(projectPath);
-    resourceProvider.newFile(_p(path.join(projectPath, '.packages')), '');
+    String projectPath = convertPath('/workspace/my/module');
+    newFile('/workspace/WORKSPACE');
+    newFolder('/workspace/bazel-bin');
+    newFolder('/workspace/bazel-genfiles');
+    newFolder(projectPath);
+    newFile(join(projectPath, '.packages'));
 
     AnalysisOptionsImpl options = new AnalysisOptionsImpl();
     SourceFactoryImpl factory =
@@ -466,28 +443,28 @@
   }
 
   void test_createSourceFactory_noProvider_packages_embedder_extensions() {
-    String rootPath = resourceProvider.convertPath('/root');
-    Folder rootFolder = resourceProvider.getFolder(rootPath);
+    String rootPath = convertPath('/root');
+    Folder rootFolder = getFolder(rootPath);
     createDefaultSdk(rootFolder);
-    String projectPath = pathContext.join(rootPath, 'project');
-    String packageFilePath = pathContext.join(projectPath, '.packages');
-    String packageA = pathContext.join(rootPath, 'pkgs', 'a');
-    String embedderPath = pathContext.join(packageA, '_embedder.yaml');
-    String packageB = pathContext.join(rootPath, 'pkgs', 'b');
-    String extensionPath = pathContext.join(packageB, '_sdkext');
-    createFile(packageFilePath, '''
-a:${pathContext.toUri(packageA)}
-b:${pathContext.toUri(packageB)}
+    String projectPath = join(rootPath, 'project');
+    String packageFilePath = join(projectPath, '.packages');
+    String packageA = join(rootPath, 'pkgs', 'a');
+    String embedderPath = join(packageA, '_embedder.yaml');
+    String packageB = join(rootPath, 'pkgs', 'b');
+    String extensionPath = join(packageB, '_sdkext');
+    newFile(packageFilePath, content: '''
+a:${resourceProvider.pathContext.toUri(packageA)}
+b:${resourceProvider.pathContext.toUri(packageB)}
 ''');
-    String asyncPath = pathContext.join(packageA, 'sdk', 'async.dart');
-    String corePath = pathContext.join(packageA, 'sdk', 'core.dart');
-    createFile(embedderPath, '''
+    String asyncPath = join(packageA, 'sdk', 'async.dart');
+    String corePath = join(packageA, 'sdk', 'core.dart');
+    newFile(embedderPath, content: '''
 embedded_libs:
   "dart:async": ${_relativeUri(asyncPath, from: packageA)}
   "dart:core": ${_relativeUri(corePath, from: packageA)}
 ''');
-    String fooPath = pathContext.join(packageB, 'ext', 'foo.dart');
-    createFile(extensionPath, '''{
+    String fooPath = join(packageB, 'ext', 'foo.dart');
+    newFile(extensionPath, content: '''{
 "dart:foo": "${_relativeUri(fooPath, from: packageB)}"
 }''');
     AnalysisOptionsImpl options = new AnalysisOptionsImpl();
@@ -504,25 +481,25 @@
 
     Source packageSource = factory.forUri('package:b/b.dart');
     expect(packageSource, isNotNull);
-    expect(packageSource.fullName, pathContext.join(packageB, 'b.dart'));
+    expect(packageSource.fullName, join(packageB, 'b.dart'));
   }
 
   void test_createSourceFactory_noProvider_packages_embedder_noExtensions() {
-    String rootPath = resourceProvider.convertPath('/root');
-    Folder rootFolder = resourceProvider.getFolder(rootPath);
+    String rootPath = convertPath('/root');
+    Folder rootFolder = getFolder(rootPath);
     createDefaultSdk(rootFolder);
-    String projectPath = pathContext.join(rootPath, 'project');
-    String packageFilePath = pathContext.join(projectPath, '.packages');
-    String packageA = pathContext.join(rootPath, 'pkgs', 'a');
-    String embedderPath = pathContext.join(packageA, '_embedder.yaml');
-    String packageB = pathContext.join(rootPath, 'pkgs', 'b');
-    createFile(packageFilePath, '''
-a:${pathContext.toUri(packageA)}
-b:${pathContext.toUri(packageB)}
+    String projectPath = join(rootPath, 'project');
+    String packageFilePath = join(projectPath, '.packages');
+    String packageA = join(rootPath, 'pkgs', 'a');
+    String embedderPath = join(packageA, '_embedder.yaml');
+    String packageB = join(rootPath, 'pkgs', 'b');
+    newFile(packageFilePath, content: '''
+a:${resourceProvider.pathContext.toUri(packageA)}
+b:${resourceProvider.pathContext.toUri(packageB)}
 ''');
-    String asyncPath = pathContext.join(packageA, 'sdk', 'async.dart');
-    String corePath = pathContext.join(packageA, 'sdk', 'core.dart');
-    createFile(embedderPath, '''
+    String asyncPath = join(packageA, 'sdk', 'async.dart');
+    String corePath = join(packageA, 'sdk', 'core.dart');
+    newFile(embedderPath, content: '''
 embedded_libs:
   "dart:async": ${_relativeUri(asyncPath, from: packageA)}
   "dart:core": ${_relativeUri(corePath, from: packageA)}
@@ -537,7 +514,7 @@
 
     Source packageSource = factory.forUri('package:b/b.dart');
     expect(packageSource, isNotNull);
-    expect(packageSource.fullName, pathContext.join(packageB, 'b.dart'));
+    expect(packageSource.fullName, join(packageB, 'b.dart'));
   }
 
   @failingTest
@@ -546,16 +523,16 @@
   }
 
   void test_createSourceFactory_noProvider_packages_noEmbedder_noExtensions() {
-    String rootPath = resourceProvider.convertPath('/root');
-    Folder rootFolder = resourceProvider.getFolder(rootPath);
+    String rootPath = convertPath('/root');
+    Folder rootFolder = getFolder(rootPath);
     createDefaultSdk(rootFolder);
-    String projectPath = pathContext.join(rootPath, 'project');
-    String packageFilePath = pathContext.join(projectPath, '.packages');
-    String packageA = pathContext.join(rootPath, 'pkgs', 'a');
-    String packageB = pathContext.join(rootPath, 'pkgs', 'b');
-    createFile(packageFilePath, '''
-a:${pathContext.toUri(packageA)}
-b:${pathContext.toUri(packageB)}
+    String projectPath = join(rootPath, 'project');
+    String packageFilePath = join(projectPath, '.packages');
+    String packageA = join(rootPath, 'pkgs', 'a');
+    String packageB = join(rootPath, 'pkgs', 'b');
+    newFile(packageFilePath, content: '''
+a:${resourceProvider.pathContext.toUri(packageA)}
+b:${resourceProvider.pathContext.toUri(packageB)}
 ''');
     AnalysisOptionsImpl options = new AnalysisOptionsImpl();
 
@@ -563,12 +540,12 @@
 
     Source dartSource = factory.forUri('dart:core');
     expect(dartSource, isNotNull);
-    expect(dartSource.fullName,
-        pathContext.join(defaultSdkPath, 'lib', 'core', 'core.dart'));
+    expect(
+        dartSource.fullName, join(defaultSdkPath, 'lib', 'core', 'core.dart'));
 
     Source packageSource = factory.forUri('package:a/a.dart');
     expect(packageSource, isNotNull);
-    expect(packageSource.fullName, pathContext.join(packageA, 'a.dart'));
+    expect(packageSource.fullName, join(packageA, 'a.dart'));
   }
 
   void test_declareVariables_emptyMap() {
@@ -633,10 +610,8 @@
     DartSdk sdk = builder.findSdk(null, new AnalysisOptionsImpl());
     expect(sdk, isNotNull);
     Source htmlSource = sdk.mapDartUri('dart:html');
-    expect(
-        htmlSource.fullName,
-        resourceProvider
-            .convertPath('/sdk/lib/html/dart2js/html_dart2js.dart'));
+    expect(htmlSource.fullName,
+        convertPath('/sdk/lib/html/dart2js/html_dart2js.dart'));
     expect(htmlSource.exists(), isTrue);
   }
 
@@ -647,25 +622,19 @@
     AnalysisOptionsImpl expected = new AnalysisOptionsImpl();
     expected.lint = true;
     expected.lintRules = <Linter>[_mockLintRule];
-    createFile(resourceProvider.convertPath('/root/WORKSPACE'), '');
-    createFile(
-        resourceProvider
-            .convertPath('/root/dart/analysis_options/lib/default.yaml'),
-        '''
+    newFile('/root/WORKSPACE');
+    newFile('/root/dart/analysis_options/lib/default.yaml', content: '''
 linter:
   rules:
     - mock_lint_rule
 ''');
-    createFile(
-        resourceProvider
-            .convertPath('/root/dart/analysis_options/lib/flutter.yaml'),
-        '''
+    newFile('/root/dart/analysis_options/lib/flutter.yaml', content: '''
 linter:
   rules:
     - mock_lint_rule2
 ''');
-    AnalysisOptions options = builder
-        .getAnalysisOptions(resourceProvider.convertPath('/root/some/path'));
+    AnalysisOptions options =
+        builder.getAnalysisOptions(convertPath('/root/some/path'));
     _expectEqualOptions(options, expected);
   }
 
@@ -676,18 +645,15 @@
     AnalysisOptionsImpl expected = new AnalysisOptionsImpl();
     expected.lint = true;
     expected.lintRules = <Linter>[_mockLintRule];
-    String packagesFilePath =
-        resourceProvider.convertPath('/some/directory/path/.packages');
-    createFile(packagesFilePath, 'flutter:/pkg/flutter/lib/');
-    String optionsFilePath = resourceProvider
-        .convertPath('/pkg/flutter/lib/analysis_options_user.yaml');
-    createFile(optionsFilePath, '''
+    String packagesFilePath = convertPath('/some/directory/path/.packages');
+    newFile(packagesFilePath, content: 'flutter:/pkg/flutter/lib/');
+    newFile('/pkg/flutter/lib/analysis_options_user.yaml', content: '''
 linter:
   rules:
     - mock_lint_rule
 ''');
-    String projPath = resourceProvider.convertPath('/some/directory/path');
-    AnalysisOptions options = builder.getAnalysisOptions(projPath);
+    String projectPath = convertPath('/some/directory/path');
+    AnalysisOptions options = builder.getAnalysisOptions(projectPath);
     _expectEqualOptions(options, expected);
   }
 
@@ -697,10 +663,9 @@
     builderOptions.defaultOptions = defaultOptions;
     AnalysisOptionsImpl expected = new AnalysisOptionsImpl();
     expected.enableLazyAssignmentOperators = true;
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, '''
+    String path = convertPath('/some/directory/path');
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath, content: '''
 linter:
   rules:
     - empty_constructor_bodies
@@ -716,10 +681,9 @@
     builderOptions.defaultOptions = defaultOptions;
     AnalysisOptionsImpl expected = new AnalysisOptionsImpl();
     expected.implicitDynamic = false;
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, '''
+    String path = convertPath('/some/directory/path');
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath, content: '''
 analyzer:
   strong-mode:
     implicit-dynamic: false
@@ -730,13 +694,12 @@
   }
 
   void test_getAnalysisOptions_gnWorkspace() {
-    String _p(String path) => resourceProvider.convertPath(path);
+    String _p(String path) => convertPath(path);
     String projectPath = _p('/workspace/some/path');
-    resourceProvider.newFolder(_p('/workspace/.jiri_root'));
-    resourceProvider.newFile(
-        _p('/workspace/out/debug/gen/dart.sources/foo_pkg'),
-        _p('/workspace/foo_pkg/lib'));
-    resourceProvider.newFolder(projectPath);
+    newFolder('/workspace/.jiri_root');
+    newFile('/workspace/out/debug/gen/dart.sources/foo_pkg',
+        content: _p('/workspace/foo_pkg/lib'));
+    newFolder(projectPath);
     ArgParser argParser = new ArgParser();
     defineAnalysisArguments(argParser);
     ArgResults argResults = argParser.parse([]);
@@ -759,25 +722,23 @@
       _mockLintRule2,
       _mockLintRule3
     ];
-    resourceProvider.newFile(
-        resourceProvider.convertPath('/mypkgs/somepkg/lib/here.yaml'), '''
+    newFile('/mypkgs/somepkg/lib/here.yaml', content: '''
 linter:
   rules:
     - mock_lint_rule3
 ''');
-    String path = resourceProvider.convertPath('/some/directory/path');
-    resourceProvider.newFile(pathContext.join(path, '.packages'), '''
+    String path = convertPath('/some/directory/path');
+    newFile(join(path, '.packages'), content: '''
 somepkg:../../../mypkgs/somepkg/lib
 ''');
-    resourceProvider.newFile(pathContext.join(path, 'bar.yaml'), '''
+    newFile(join(path, 'bar.yaml'), content: '''
 include: package:somepkg/here.yaml
 linter:
   rules:
     - mock_lint_rule2
 ''');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, '''
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath, content: '''
 include: bar.yaml
 linter:
   rules:
@@ -789,20 +750,18 @@
   }
 
   void test_getAnalysisOptions_invalid() {
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, ';');
+    String path = convertPath('/some/directory/path');
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath, content: ';');
 
     AnalysisOptions options = builder.getAnalysisOptions(path);
     expect(options, isNotNull);
   }
 
   void test_getAnalysisOptions_noDefault_noOverrides() {
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, '''
+    String path = convertPath('/some/directory/path');
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath, content: '''
 linter:
   rules:
     - empty_constructor_bodies
@@ -815,10 +774,9 @@
   void test_getAnalysisOptions_noDefault_overrides() {
     AnalysisOptionsImpl expected = new AnalysisOptionsImpl();
     expected.implicitDynamic = false;
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, '''
+    String path = convertPath('/some/directory/path');
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath, content: '''
 analyzer:
   strong-mode:
     implicit-dynamic: false
@@ -829,24 +787,41 @@
   }
 
   void test_getAnalysisOptions_optionsPath() {
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, '''
+    String path = convertPath('/some/directory/path');
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath, content: '''
 linter:
   rules:
     - empty_constructor_bodies
 ''');
 
-    ContextRoot root = new ContextRoot(path, [], pathContext: pathContext);
+    ContextRoot root =
+        new ContextRoot(path, [], pathContext: resourceProvider.pathContext);
     builder.getAnalysisOptions(path, contextRoot: root);
     expect(root.optionsFilePath, equals(filePath));
   }
 
+  void test_getAnalysisOptions_sdkVersionConstraint() {
+    var projectPath = convertPath('/test');
+    newFile(join(projectPath, AnalysisEngine.PUBSPEC_YAML_FILE), content: '''
+environment:
+  sdk: ^2.1.0
+''');
+
+    var options = builder.getAnalysisOptions(projectPath);
+    expect(options.sdkVersionConstraint.toString(), '^2.1.0');
+  }
+
+  void test_getAnalysisOptions_sdkVersionConstraint_any_noOptionsFile() {
+    var projectPath = convertPath('/test');
+    var options = builder.getAnalysisOptions(projectPath);
+    expect(options.sdkVersionConstraint, isNull);
+  }
+
   void test_getOptionsFile_explicit() {
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath = resourceProvider.convertPath('/options/analysis.yaml');
-    resourceProvider.newFile(filePath, '');
+    String path = convertPath('/some/directory/path');
+    String filePath = convertPath('/options/analysis.yaml');
+    newFile(filePath);
 
     builderOptions.defaultAnalysisOptionsFilePath = filePath;
     File result = builder.getOptionsFile(path);
@@ -855,11 +830,11 @@
   }
 
   void test_getOptionsFile_inParentOfRoot_new() {
-    String parentPath = resourceProvider.convertPath('/some/directory');
-    String path = pathContext.join(parentPath, 'path');
+    String parentPath = convertPath('/some/directory');
+    String path = join(parentPath, 'path');
     String filePath =
-        pathContext.join(parentPath, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, '');
+        join(parentPath, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath);
 
     File result = builder.getOptionsFile(path);
     expect(result, isNotNull);
@@ -867,11 +842,10 @@
   }
 
   void test_getOptionsFile_inParentOfRoot_old() {
-    String parentPath = resourceProvider.convertPath('/some/directory');
-    String path = pathContext.join(parentPath, 'path');
-    String filePath =
-        pathContext.join(parentPath, AnalysisEngine.ANALYSIS_OPTIONS_FILE);
-    resourceProvider.newFile(filePath, '');
+    String parentPath = convertPath('/some/directory');
+    String path = join(parentPath, 'path');
+    String filePath = join(parentPath, AnalysisEngine.ANALYSIS_OPTIONS_FILE);
+    newFile(filePath);
 
     File result = builder.getOptionsFile(path);
     expect(result, isNotNull);
@@ -879,10 +853,9 @@
   }
 
   void test_getOptionsFile_inRoot_new() {
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
-    resourceProvider.newFile(filePath, '');
+    String path = convertPath('/some/directory/path');
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_YAML_FILE);
+    newFile(filePath);
 
     File result = builder.getOptionsFile(path);
     expect(result, isNotNull);
@@ -890,10 +863,9 @@
   }
 
   void test_getOptionsFile_inRoot_old() {
-    String path = resourceProvider.convertPath('/some/directory/path');
-    String filePath =
-        pathContext.join(path, AnalysisEngine.ANALYSIS_OPTIONS_FILE);
-    resourceProvider.newFile(filePath, '');
+    String path = convertPath('/some/directory/path');
+    String filePath = join(path, AnalysisEngine.ANALYSIS_OPTIONS_FILE);
+    newFile(filePath);
 
     File result = builder.getOptionsFile(path);
     expect(result, isNotNull);
@@ -931,7 +903,6 @@
     expect(actual.preserveComments, expected.preserveComments);
     expect(actual.strongMode, expected.strongMode);
     expect(actual.strongModeHints, expected.strongModeHints);
-    expect(actual.declarationCasts, expected.declarationCasts);
     expect(actual.implicitCasts, expected.implicitCasts);
     expect(actual.implicitDynamic, expected.implicitDynamic);
     expect(actual.trackCacheDependencies, expected.trackCacheDependencies);
@@ -939,6 +910,7 @@
   }
 
   Uri _relativeUri(String path, {String from}) {
+    var pathContext = resourceProvider.pathContext;
     String relativePath = pathContext.relative(path, from: from);
     return pathContext.toUri(relativePath);
   }
diff --git a/pkg/analyzer/test/src/context/cache_test.dart b/pkg/analyzer/test/src/context/cache_test.dart
index fbd0736..2b42c7d9 100644
--- a/pkg/analyzer/test/src/context/cache_test.dart
+++ b/pkg/analyzer/test/src/context/cache_test.dart
@@ -4,7 +4,6 @@
 
 import 'package:analyzer/exception/exception.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/file_system/physical_file_system.dart';
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/dart/sdk/sdk.dart';
@@ -14,6 +13,7 @@
 import 'package:analyzer/src/source/package_map_resolver.dart';
 import 'package:analyzer/src/task/api/model.dart';
 import 'package:analyzer/src/task/model.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -1162,13 +1162,12 @@
 }
 
 @reflectiveTest
-class PackageCachePartitionTest extends CachePartitionTest {
-  MemoryResourceProvider resourceProvider;
+class PackageCachePartitionTest extends CachePartitionTest
+    with ResourceProviderMixin {
   Folder rootFolder;
 
   CachePartition createPartition() {
-    resourceProvider = new MemoryResourceProvider();
-    rootFolder = resourceProvider.newFolder('/package/root');
+    rootFolder = newFolder('/package/root');
     return new PackageCachePartition(null, rootFolder);
   }
 
diff --git a/pkg/analyzer/test/src/context/context_test.dart b/pkg/analyzer/test/src/context/context_test.dart
index b33ce36..9ebd97f 100644
--- a/pkg/analyzer/test/src/context/context_test.dart
+++ b/pkg/analyzer/test/src/context/context_test.dart
@@ -2686,7 +2686,7 @@
   void test_validateCacheConsistency_deletedFile() {
     String pathA = '/a.dart';
     String pathB = '/b.dart';
-    var fileA = newFile(pathA, content: "");
+    var fileA = newFile(pathA);
     var fileB = newFile(pathB, content: "import 'a.dart';");
     Source sourceA = fileA.createSource();
     Source sourceB = fileB.createSource();
diff --git a/pkg/analyzer/test/src/context/mock_sdk.dart b/pkg/analyzer/test/src/context/mock_sdk.dart
deleted file mode 100644
index ba87ba5..0000000
--- a/pkg/analyzer/test/src/context/mock_sdk.dart
+++ /dev/null
@@ -1,686 +0,0 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-import 'package:analyzer/file_system/file_system.dart' as resource;
-import 'package:analyzer/file_system/memory_file_system.dart' as resource;
-import 'package:analyzer/src/context/cache.dart';
-import 'package:analyzer/src/context/context.dart';
-import 'package:analyzer/src/generated/engine.dart' show AnalysisEngine;
-import 'package:analyzer/src/generated/sdk.dart';
-import 'package:analyzer/src/generated/source.dart';
-import 'package:analyzer/src/summary/idl.dart' show PackageBundle;
-import 'package:analyzer/src/summary/summary_file_builder.dart';
-
-const String librariesContent = r'''
-const Map<String, LibraryInfo> libraries = const {
-  "async": const LibraryInfo("async/async.dart"),
-  "collection": const LibraryInfo("collection/collection.dart"),
-  "convert": const LibraryInfo("convert/convert.dart"),
-  "core": const LibraryInfo("core/core.dart"),
-  "html": const LibraryInfo(
-    "html/dartium/html_dartium.dart",
-    dart2jsPath: "html/dart2js/html_dart2js.dart"),
-  "math": const LibraryInfo("math/math.dart"),
-  "_foreign_helper": const LibraryInfo("_internal/js_runtime/lib/foreign_helper.dart"),
-};
-''';
-
-const String sdkRoot = '/sdk';
-
-const _MockSdkLibrary _LIB_ASYNC =
-    const _MockSdkLibrary('dart:async', '$sdkRoot/lib/async/async.dart', '''
-library dart.async;
-
-import 'dart:math';
-
-part 'stream.dart';
-
-class Future<T> {
-  factory Future(computation()) => null;
-  factory Future.delayed(Duration duration, [T computation()]) => null;
-  factory Future.microtask(FutureOr<T> computation()) => null;
-  factory Future.value([FutureOr<T> result]) => null;
-
-  static Future<List<T>> wait<T>(
-      Iterable<Future<T>> futures) => null;
-  Future<R> then<R>(FutureOr<R> onValue(T value)) => null;
-
-  Future<T> whenComplete(action());
-}
-
-class FutureOr<T> {}
-
-abstract class Completer<T> {
-  factory Completer() => null;
-  factory Completer.sync() => null;
-  Future<T> get future;
-  void complete([value]);
-  void completeError(Object error, [StackTrace stackTrace]);
-  bool get isCompleted;
-}
-
-abstract class Timer {
-  static void run(void callback()) {}
-}
-
-class _StreamIterator<T> implements StreamIterator<T> {}
-class _AsyncStarStreamController {}
-Function _asyncThenWrapperHelper(continuation) {}
-Function _asyncErrorWrapperHelper(continuation) {}
-Future _awaitHelper(
-    object, Function thenCallback, Function errorCallback, var awaiter) {}
-''', const <String, String>{
-  '$sdkRoot/lib/async/stream.dart': r'''
-part of dart.async;
-abstract class Stream<T> {
-  Future<T> get first;
-  StreamSubscription<T> listen(void onData(T event),
-                               { Function onError,
-                                 void onDone(),
-                                 bool cancelOnError});
-  Stream();
-  factory Stream.fromIterable(Iterable<T> data) => null;
-}
-
-abstract class StreamIterator<T> {}
-
-abstract class StreamSubscription<T> {
-  Future cancel();
-  void onData(void handleData(T data));
-  void onError(Function handleError);
-  void onDone(void handleDone());
-  void pause([Future resumeSignal]);
-  void resume();
-  bool get isPaused;
-  Future<E> asFuture<E>([E futureValue]);
-}
-
-abstract class StreamTransformer<S, T> {}
-'''
-});
-
-const _MockSdkLibrary _LIB_ASYNC2 =
-    const _MockSdkLibrary('dart:async2', '$sdkRoot/lib/async2/async2.dart', '''
-library dart.async2;
-
-class Future {}
-''');
-
-const _MockSdkLibrary _LIB_COLLECTION = const _MockSdkLibrary(
-    'dart:collection', '$sdkRoot/lib/collection/collection.dart', '''
-library dart.collection;
-
-abstract class HashMap<K, V> implements Map<K, V> {}
-''');
-
-const _MockSdkLibrary _LIB_CONVERT = const _MockSdkLibrary(
-    'dart:convert', '$sdkRoot/lib/convert/convert.dart', '''
-library dart.convert;
-
-import 'dart:async';
-
-abstract class Converter<S, T> implements StreamTransformer {}
-class JsonDecoder extends Converter<String, Object> {}
-''');
-
-const _MockSdkLibrary _LIB_CORE =
-    const _MockSdkLibrary('dart:core', '$sdkRoot/lib/core/core.dart', '''
-library dart.core;
-
-import 'dart:async';
-import 'dart:_internal';
-
-export 'dart:async' show Future, Stream;
-
-class Object {
-  const Object();
-  bool operator ==(other) => identical(this, other);
-  String toString() => 'a string';
-  int get hashCode => 0;
-  Type get runtimeType => null;
-  dynamic noSuchMethod(Invocation invocation) => null;
-}
-
-class Function {}
-class StackTrace {}
-
-class Symbol {
-  const factory Symbol(String name) = _SymbolImpl;
-}
-
-class _SymbolImpl {
-  const _SymbolImpl(String name);
-}
-
-class Type {}
-
-abstract class Comparable<T> {
-  int compareTo(T other);
-}
-
-abstract class Pattern {}
-abstract class String implements Comparable<String>, Pattern {
-  external factory String.fromCharCodes(Iterable<int> charCodes,
-                                        [int start = 0, int end]);
-  String operator +(String other) => null;
-  bool operator ==(Object other);
-  bool get isEmpty => false;
-  bool get isNotEmpty => false;
-  int get length => 0;
-  int codeUnitAt(int index);
-  String substring(int len) => null;
-  String toLowerCase();
-  String toUpperCase();
-  List<int> get codeUnits;
-}
-abstract class RegExp implements Pattern {
-  external factory RegExp(String source);
-}
-
-class bool extends Object {
-  external const factory bool.fromEnvironment(String name,
-                                              {bool defaultValue: false});
-}
-
-abstract class Invocation {}
-
-abstract class num implements Comparable<num> {
-  bool operator ==(Object other);
-  bool operator <(num other);
-  bool operator <=(num other);
-  bool operator >(num other);
-  bool operator >=(num other);
-  num operator +(num other);
-  num operator -(num other);
-  num operator *(num other);
-  double operator /(num other);
-  int operator ^(int other);
-  int operator |(int other);
-  int operator <<(int other);
-  int operator >>(int other);
-  int operator ~/(num other);
-  num operator %(num other);
-  int operator ~();
-  num operator -();
-  int toInt();
-  double toDouble();
-  num abs();
-  int round();
-}
-abstract class int extends num {
-  external const factory int.fromEnvironment(String name, {int defaultValue});
-
-  bool get isNegative;
-  bool get isEven => false;
-
-  int operator &(int other);
-  int operator |(int other);
-  int operator ^(int other);
-  int operator ~();
-  int operator <<(int shiftAmount);
-  int operator >>(int shiftAmount);
-
-  int operator -();
-
-  external static int parse(String source,
-                            { int radix,
-                              int onError(String source) });
-
-  String toString();
-}
-
-abstract class double extends num {
-  static const double NAN = 0.0 / 0.0;
-  static const double INFINITY = 1.0 / 0.0;
-  static const double NEGATIVE_INFINITY = -INFINITY;
-  static const double MIN_POSITIVE = 5e-324;
-  static const double MAX_FINITE = 1.7976931348623157e+308;
-
-  double remainder(num other);
-  double operator +(num other);
-  double operator -(num other);
-  double operator *(num other);
-  double operator %(num other);
-  double operator /(num other);
-  int operator ~/(num other);
-  double operator -();
-  double abs();
-  double get sign;
-  int round();
-  int floor();
-  int ceil();
-  int truncate();
-  double roundToDouble();
-  double floorToDouble();
-  double ceilToDouble();
-  double truncateToDouble();
-  external static double parse(String source,
-                               [double onError(String source)]);
-}
-
-class DateTime extends Object {}
-
-class Null extends Object {
-  factory Null._uninstantiable() => null;
-}
-
-class Deprecated extends Object {
-  final String expires;
-  const Deprecated(this.expires);
-}
-const Object deprecated = const Deprecated("next release");
-
-class Iterator<E> {
-  bool moveNext();
-  E get current;
-}
-
-abstract class Iterable<E> {
-  Iterator<E> get iterator;
-  bool get isEmpty;
-  E get first;
-  int get length;
-
-  Iterable<R> map<R>(R f(E e));
-
-  R fold<R>(R initialValue,
-      R combine(R previousValue, E element)) => null;
-
-  Iterable<T> expand<T>(Iterable<T> f(E element));
-
-  Iterable<E> where(bool test(E element));
-
-  void forEach(void f(E element));
-
-  List<E> toList();
-}
-
-class List<E> implements Iterable<E> {
-  List([int length]);
-  factory List.from(Iterable elements, {bool growable: true}) => null;
-  void add(E value) {}
-  void addAll(Iterable<E> iterable) {}
-  E operator [](int index) => null;
-  void operator []=(int index, E value) {}
-  Iterator<E> get iterator => null;
-  void clear() {}
-
-  bool get isEmpty => false;
-  E get first => null;
-  E get last => null;
-
-}
-
-class Map<K, V> extends Object {
-  Iterable<K> get keys => null;
-  int get length;
-  Iterable<V> get values;
-  V operator [](K key) => null;
-  void operator []=(K key, V value) {}
-  Map<RK, RV> cast<RK, RV>();
-  bool containsKey(Object key);
-}
-
-class Duration implements Comparable<Duration> {}
-
-class Exception {
-  factory Exception([var message]) => null;
-}
-
-external bool identical(Object a, Object b);
-
-void print(Object object) {}
-
-class _Proxy { const _Proxy(); }
-const Object proxy = const _Proxy();
-
-class _Override { const _Override(); }
-const Object override = const _Override();
-
-class _CompileTimeError {
-  final String _errorMsg;
-  _CompileTimeError(this._errorMsg);
-}
-
-class AbstractClassInstantiationError {
-  AbstractClassInstantiationError(String className);
-}
-
-class FallThroughError {
-  FallThroughError();
-  FallThroughError._create(String url, int line);
-}
-
-abstract class _SyncIterable implements Iterable {}
-class _InvocationMirror {
-  _InvocationMirror._withoutType(
-      String _functionName, List<Type> _typeArguments,
-      List _positionalArguments, Map<Symbol, dynamic>_namedArguments,
-      bool _isSuperInvocation);
-}
-''');
-
-const _MockSdkLibrary _LIB_FOREIGN_HELPER = const _MockSdkLibrary(
-    'dart:_foreign_helper',
-    '$sdkRoot/lib/_foreign_helper/_foreign_helper.dart', '''
-library dart._foreign_helper;
-
-JS(String typeDescription, String codeTemplate,
-  [arg0, arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9, arg10, arg11])
-{}
-''');
-
-const _MockSdkLibrary _LIB_HTML_DART2JS = const _MockSdkLibrary(
-    'dart:html', '$sdkRoot/lib/html/dart2js/html_dart2js.dart', '''
-library dart.html;
-class HtmlElement {}
-''');
-
-const _MockSdkLibrary _LIB_HTML_DARTIUM = const _MockSdkLibrary(
-    'dart:html', '$sdkRoot/lib/html/dartium/html_dartium.dart', '''
-library dart.dom.html;
-
-final HtmlDocument document;
-
-abstract class Element {}
-
-abstract class HtmlDocument {
-  Element query(String relativeSelectors) => null;
-}
-
-abstract class HtmlElement extends Element {}
-
-abstract class AnchorElement extends HtmlElement {}
-abstract class BodyElement extends HtmlElement {}
-abstract class ButtonElement extends HtmlElement {}
-abstract class DivElement extends HtmlElement {}
-abstract class InputElement extends HtmlElement {}
-abstract class SelectElement extends HtmlElement {}
-
-
-abstract class CanvasElement extends HtmlElement {
-  Object getContext(String contextId, [Map attributes]);
-  CanvasRenderingContext2D get context2D;
-}
-
-abstract class CanvasRenderingContext2D {}
-
-Element query(String relativeSelectors) => null;
-''');
-
-const _MockSdkLibrary _LIB_INTERCEPTORS = const _MockSdkLibrary(
-    'dart:_interceptors',
-    '$sdkRoot/lib/_internal/js_runtime/lib/interceptors.dart', '''
-library dart._interceptors;
-''');
-
-const _MockSdkLibrary _LIB_INTERNAL = const _MockSdkLibrary(
-    'dart:_internal', '$sdkRoot/lib/_internal/internal.dart', '''
-library dart._internal;
-class Symbol {}
-class ExternalName {
-  final String name;
-  const ExternalName(this.name);
-}
-''');
-
-const _MockSdkLibrary _LIB_MATH =
-    const _MockSdkLibrary('dart:math', '$sdkRoot/lib/math/math.dart', '''
-library dart.math;
-
-const double E = 2.718281828459045;
-const double PI = 3.1415926535897932;
-const double LN10 =  2.302585092994046;
-
-T min<T extends num>(T a, T b) => null;
-T max<T extends num>(T a, T b) => null;
-
-external double cos(num radians);
-external double sin(num radians);
-external double sqrt(num radians);
-class Random {
-  bool nextBool() => true;
-  double nextDouble() => 2.0;
-  int nextInt() => 1;
-}
-''');
-
-const List<SdkLibrary> _LIBRARIES = const [
-  _LIB_CORE,
-  _LIB_ASYNC,
-  _LIB_ASYNC2,
-  _LIB_COLLECTION,
-  _LIB_CONVERT,
-  _LIB_FOREIGN_HELPER,
-  _LIB_MATH,
-  _LIB_HTML_DART2JS,
-  _LIB_HTML_DARTIUM,
-  _LIB_INTERCEPTORS,
-  _LIB_INTERNAL,
-];
-
-class MockSdk implements DartSdk {
-  static const Map<String, String> _URI_MAP = const {
-    "dart:core": "$sdkRoot/lib/core/core.dart",
-    "dart:html": "$sdkRoot/lib/html/dartium/html_dartium.dart",
-    "dart:async": "$sdkRoot/lib/async/async.dart",
-    "dart:async2": "$sdkRoot/lib/async2/async2.dart",
-    "dart:async/stream.dart": "$sdkRoot/lib/async/stream.dart",
-    "dart:collection": "$sdkRoot/lib/collection/collection.dart",
-    "dart:convert": "$sdkRoot/lib/convert/convert.dart",
-    "dart:_foreign_helper": "$sdkRoot/lib/_foreign_helper/_foreign_helper.dart",
-    "dart:_interceptors":
-        "$sdkRoot/lib/_internal/js_runtime/lib/interceptors.dart",
-    "dart:_internal": "$sdkRoot/lib/_internal/internal.dart",
-    "dart:math": "$sdkRoot/lib/math/math.dart"
-  };
-
-  final resource.MemoryResourceProvider provider;
-
-  final Map<String, String> uriMap = {};
-
-  /**
-   * The [AnalysisContextImpl] which is used for all of the sources.
-   */
-  AnalysisContextImpl _analysisContext;
-
-  @override
-  final List<SdkLibrary> sdkLibraries = [];
-
-  /**
-   * The cached linked bundle of the SDK.
-   */
-  PackageBundle _bundle;
-
-  MockSdk(
-      {bool generateSummaryFiles: false,
-      resource.MemoryResourceProvider resourceProvider})
-      : provider = resourceProvider ?? new resource.MemoryResourceProvider() {
-    _URI_MAP.forEach((uri, path) {
-      uriMap[uri] = provider.convertPath(path);
-    });
-
-    for (_MockSdkLibrary library in _LIBRARIES) {
-      var convertedLibrary = library._toProvider(provider);
-      sdkLibraries.add(convertedLibrary);
-    }
-
-    for (_MockSdkLibrary library in sdkLibraries) {
-      provider.newFile(library.path, library.content);
-      library.parts.forEach((String path, String content) {
-        provider.newFile(path, content);
-      });
-    }
-    provider.newFile(
-        provider.convertPath(
-            '$sdkRoot/lib/_internal/sdk_library_metadata/lib/libraries.dart'),
-        librariesContent);
-    if (generateSummaryFiles) {
-      List<int> bytes = _computeLinkedBundleBytes();
-      provider.newFileWithBytes(
-          provider.convertPath('/lib/_internal/strong.sum'), bytes);
-    }
-  }
-
-  @override
-  AnalysisContextImpl get context {
-    if (_analysisContext == null) {
-      _analysisContext = new _SdkAnalysisContext(this);
-      SourceFactory factory = new SourceFactory([new DartUriResolver(this)]);
-      _analysisContext.sourceFactory = factory;
-    }
-    return _analysisContext;
-  }
-
-  @override
-  String get sdkVersion => throw new UnimplementedError();
-
-  @override
-  List<String> get uris =>
-      sdkLibraries.map((SdkLibrary library) => library.shortName).toList();
-
-  @override
-  Source fromFileUri(Uri uri) {
-    String filePath = provider.pathContext.fromUri(uri);
-    if (!filePath.startsWith(provider.convertPath('$sdkRoot/lib/'))) {
-      return null;
-    }
-    for (SdkLibrary library in sdkLibraries) {
-      String libraryPath = library.path;
-      if (filePath == libraryPath) {
-        try {
-          resource.File file = provider.getResource(filePath);
-          Uri dartUri = Uri.parse(library.shortName);
-          return file.createSource(dartUri);
-        } catch (exception) {
-          return null;
-        }
-      }
-      String libraryRootPath = provider.pathContext.dirname(libraryPath) +
-          provider.pathContext.separator;
-      if (filePath.startsWith(libraryRootPath)) {
-        String pathInLibrary = filePath.substring(libraryRootPath.length);
-        String uriStr = '${library.shortName}/$pathInLibrary';
-        try {
-          resource.File file = provider.getResource(filePath);
-          Uri dartUri = Uri.parse(uriStr);
-          return file.createSource(dartUri);
-        } catch (exception) {
-          return null;
-        }
-      }
-    }
-    return null;
-  }
-
-  @override
-  PackageBundle getLinkedBundle() {
-    if (_bundle == null) {
-      resource.File summaryFile =
-          provider.getFile(provider.convertPath('/lib/_internal/strong.sum'));
-      List<int> bytes;
-      if (summaryFile.exists) {
-        bytes = summaryFile.readAsBytesSync();
-      } else {
-        bytes = _computeLinkedBundleBytes();
-      }
-      _bundle = new PackageBundle.fromBuffer(bytes);
-    }
-    return _bundle;
-  }
-
-  @override
-  SdkLibrary getSdkLibrary(String dartUri) {
-    for (SdkLibrary library in _LIBRARIES) {
-      if (library.shortName == dartUri) {
-        return library;
-      }
-    }
-    return null;
-  }
-
-  @override
-  Source mapDartUri(String dartUri) {
-    String path = uriMap[dartUri];
-    if (path != null) {
-      resource.File file = provider.getResource(path);
-      Uri uri = new Uri(scheme: 'dart', path: dartUri.substring(5));
-      return file.createSource(uri);
-    }
-    // If we reach here then we tried to use a dartUri that's not in the
-    // table above.
-    return null;
-  }
-
-  /**
-   * Compute the bytes of the linked bundle associated with this SDK.
-   */
-  List<int> _computeLinkedBundleBytes() {
-    List<Source> librarySources = sdkLibraries
-        .map((SdkLibrary library) => mapDartUri(library.shortName))
-        .toList();
-    return new SummaryBuilder(librarySources, context).build();
-  }
-}
-
-class _MockSdkLibrary implements SdkLibrary {
-  final String shortName;
-  final String path;
-  final String content;
-  final Map<String, String> parts;
-
-  const _MockSdkLibrary(this.shortName, this.path, this.content,
-      [this.parts = const <String, String>{}]);
-
-  @override
-  String get category => throw new UnimplementedError();
-
-  @override
-  bool get isDart2JsLibrary => throw new UnimplementedError();
-
-  @override
-  bool get isDocumented => throw new UnimplementedError();
-
-  @override
-  bool get isImplementation => throw new UnimplementedError();
-
-  @override
-  bool get isInternal => shortName.startsWith('dart:_');
-
-  @override
-  bool get isShared => throw new UnimplementedError();
-
-  @override
-  bool get isVmLibrary => throw new UnimplementedError();
-
-  _MockSdkLibrary _toProvider(resource.MemoryResourceProvider provider) {
-    return new _MockSdkLibrary(
-      shortName,
-      provider.convertPath(path),
-      content,
-      parts.map((path, content) {
-        var convertedPath = provider.convertPath(path);
-        return new MapEntry(convertedPath, content);
-      }),
-    );
-  }
-}
-
-/**
- * An [AnalysisContextImpl] that only contains sources for a Dart SDK.
- */
-class _SdkAnalysisContext extends AnalysisContextImpl {
-  final DartSdk sdk;
-
-  _SdkAnalysisContext(this.sdk);
-
-  @override
-  AnalysisCache createCacheFromSourceFactory(SourceFactory factory) {
-    if (factory == null) {
-      return super.createCacheFromSourceFactory(factory);
-    }
-    return new AnalysisCache(
-        <CachePartition>[AnalysisEngine.instance.partitionManager.forSdk(sdk)]);
-  }
-}
diff --git a/pkg/analyzer/test/src/context/source_test.dart b/pkg/analyzer/test/src/context/source_test.dart
index 18cc9b8..45a5ffc 100644
--- a/pkg/analyzer/test/src/context/source_test.dart
+++ b/pkg/analyzer/test/src/context/source_test.dart
@@ -20,8 +20,8 @@
 @reflectiveTest
 class SourceFactoryImplTest extends AbstractContextTest {
   void test_restoreUri() {
-    String libPath = resourceProvider.convertPath('/pkgs/somepkg/lib');
-    Uri libUri = resourceProvider.getFolder(libPath).toUri();
+    String libPath = convertPath('/pkgs/somepkg/lib');
+    Uri libUri = getFolder(libPath).toUri();
     Map<String, Uri> packageUriMap = <String, Uri>{'foo': libUri};
     SourceFactoryImpl sourceFactory = new SourceFactoryImpl(
       <UriResolver>[new ResourceUriResolver(resourceProvider)],
diff --git a/pkg/analyzer/test/src/dart/analysis/analysis_context_collection_test.dart b/pkg/analyzer/test/src/dart/analysis/analysis_context_collection_test.dart
index 0afd0b0..b2870e7 100644
--- a/pkg/analyzer/test/src/dart/analysis/analysis_context_collection_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/analysis_context_collection_test.dart
@@ -1,15 +1,14 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analyzer/src/dart/analysis/analysis_context_collection.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:meta/meta.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../../context/mock_sdk.dart';
-
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(AnalysisContextCollectionTest);
@@ -17,7 +16,7 @@
 }
 
 @reflectiveTest
-class AnalysisContextCollectionTest extends Object with ResourceProviderMixin {
+class AnalysisContextCollectionTest with ResourceProviderMixin {
   void setUp() {
     new MockSdk(resourceProvider: resourceProvider);
   }
diff --git a/pkg/analyzer/test/src/dart/analysis/base.dart b/pkg/analyzer/test/src/dart/analysis/base.dart
index e9f6eaa..8f6daf9 100644
--- a/pkg/analyzer/test/src/dart/analysis/base.dart
+++ b/pkg/analyzer/test/src/dart/analysis/base.dart
@@ -2,12 +2,14 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/visitor.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
+import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
+import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:analyzer/src/dart/analysis/status.dart';
 import 'package:analyzer/src/file_system/file_system.dart';
 import 'package:analyzer/src/generated/engine.dart' show AnalysisOptionsImpl;
@@ -16,12 +18,10 @@
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
 import 'package:analyzer/src/summary/package_bundle_reader.dart';
-import 'package:analyzer/src/dart/analysis/byte_store.dart';
-import 'package:analyzer/src/dart/analysis/performance_logger.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 
-import '../../context/mock_sdk.dart';
-
 /**
  * Finds an [Element] with the given [name].
  */
@@ -46,8 +46,7 @@
  */
 typedef void _ElementVisitorFunction(Element element);
 
-class BaseAnalysisDriverTest {
-  final MemoryResourceProvider provider = new MemoryResourceProvider();
+class BaseAnalysisDriverTest with ResourceProviderMixin {
   DartSdk sdk;
   final ByteStore byteStore = new MemoryByteStore();
   final FileContentOverlay contentOverlay = new FileContentOverlay();
@@ -60,7 +59,7 @@
   AnalysisDriverScheduler scheduler;
   AnalysisDriver driver;
   final List<AnalysisStatus> allStatuses = <AnalysisStatus>[];
-  final List<AnalysisResult> allResults = <AnalysisResult>[];
+  final List<ResolvedUnitResult> allResults = <ResolvedUnitResult>[];
   final List<ExceptionResult> allExceptions = <ExceptionResult>[];
 
   String testProject;
@@ -71,7 +70,7 @@
 
   void addTestFile(String content, {bool priority: false}) {
     testCode = content;
-    provider.newFile(testFile, content);
+    newFile(testFile, content: content);
     driver.addFile(testFile);
     if (priority) {
       driver.priorityFiles = [testFile];
@@ -82,25 +81,26 @@
       {Map<String, List<Folder>> packageMap,
       SummaryDataStore externalSummaries}) {
     packageMap ??= <String, List<Folder>>{
-      'test': [provider.getFolder(testProject)],
-      'aaa': [provider.getFolder(_p('/aaa/lib'))],
-      'bbb': [provider.getFolder(_p('/bbb/lib'))],
+      'test': [getFolder(testProject)],
+      'aaa': [getFolder('/aaa/lib')],
+      'bbb': [getFolder('/bbb/lib')],
     };
     return new AnalysisDriver(
         scheduler,
         logger,
-        provider,
+        resourceProvider,
         byteStore,
         contentOverlay,
         null,
         new SourceFactory([
           new DartUriResolver(sdk),
           generatedUriResolver,
-          new PackageMapUriResolver(provider, packageMap),
-          new ResourceUriResolver(provider)
-        ], null, provider),
+          new PackageMapUriResolver(resourceProvider, packageMap),
+          new ResourceUriResolver(resourceProvider)
+        ], null, resourceProvider),
         createAnalysisOptions(),
         disableChangesAndCacheAllResults: disableChangesAndCacheAllResults,
+        enableIndex: true,
         externalSummaries: externalSummaries);
   }
 
@@ -137,9 +137,9 @@
   }
 
   void setUp() {
-    sdk = new MockSdk(resourceProvider: provider);
-    testProject = _p('/test/lib');
-    testFile = _p('/test/lib/test.dart');
+    sdk = new MockSdk(resourceProvider: resourceProvider);
+    testProject = convertPath('/test/lib');
+    testFile = convertPath('/test/lib/test.dart');
     logger = new PerformanceLog(logBuffer);
     scheduler = new AnalysisDriverScheduler(logger);
     driver = createAnalysisDriver();
@@ -150,8 +150,6 @@
   }
 
   void tearDown() {}
-
-  String _p(String path) => provider.convertPath(path);
 }
 
 /**
diff --git a/pkg/analyzer/test/src/dart/analysis/context_builder_test.dart b/pkg/analyzer/test/src/dart/analysis/context_builder_test.dart
index 86c3094..c98351b 100644
--- a/pkg/analyzer/test/src/dart/analysis/context_builder_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/context_builder_test.dart
@@ -7,16 +7,14 @@
 import 'package:analyzer/dart/analysis/analysis_context.dart';
 import 'package:analyzer/dart/analysis/context_root.dart';
 import 'package:analyzer/dart/analysis/declared_variables.dart';
-import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/dart/analysis/context_builder.dart';
 import 'package:analyzer/src/dart/analysis/context_root.dart';
 import 'package:analyzer/src/dart/analysis/driver_based_analysis_context.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../../context/mock_sdk.dart';
-
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(ContextBuilderImplTest);
@@ -24,7 +22,7 @@
 }
 
 @reflectiveTest
-class ContextBuilderImplTest extends Object with ResourceProviderMixin {
+class ContextBuilderImplTest with ResourceProviderMixin {
   ContextBuilderImpl contextBuilder;
   ContextRoot contextRoot;
 
@@ -38,11 +36,9 @@
   }
 
   void setUp() {
-    resourceProvider.newFolder(resourceProvider.pathContext.dirname(
-        resourceProvider.pathContext.dirname(io.Platform.resolvedExecutable)));
+    newFile(io.Platform.resolvedExecutable); // create folders
+    var folder = newFolder('/home/test');
     contextBuilder = new ContextBuilderImpl(resourceProvider: resourceProvider);
-    String path = resourceProvider.convertPath('/temp/root');
-    Folder folder = resourceProvider.newFolder(path);
     contextRoot = new ContextRootImpl(resourceProvider, folder);
   }
 
diff --git a/pkg/analyzer/test/src/dart/analysis/context_locator_test.dart b/pkg/analyzer/test/src/dart/analysis/context_locator_test.dart
index 388be9b..03db7aa 100644
--- a/pkg/analyzer/test/src/dart/analysis/context_locator_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/context_locator_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -16,7 +16,7 @@
 }
 
 @reflectiveTest
-class ContextLocatorImplTest extends Object with ResourceProviderMixin {
+class ContextLocatorImplTest with ResourceProviderMixin {
   ContextLocatorImpl contextLocator;
 
   ContextRoot findRoot(List<ContextRoot> roots, Resource rootFolder) {
diff --git a/pkg/analyzer/test/src/dart/analysis/context_root_test.dart b/pkg/analyzer/test/src/dart/analysis/context_root_test.dart
index 9b6324d..6edc6d2 100644
--- a/pkg/analyzer/test/src/dart/analysis/context_root_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/context_root_test.dart
@@ -3,8 +3,8 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/dart/analysis/context_root.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -15,50 +15,48 @@
 }
 
 @reflectiveTest
-class ContextRootTest {
-  MemoryResourceProvider provider = new MemoryResourceProvider();
+class ContextRootTest with ResourceProviderMixin {
   String rootPath;
   Folder rootFolder;
   ContextRootImpl contextRoot;
 
   void setUp() {
-    rootPath = provider.convertPath('/test/root');
-    rootFolder = provider.newFolder(rootPath);
-    contextRoot = new ContextRootImpl(provider, rootFolder);
+    rootPath = convertPath('/test/root');
+    rootFolder = newFolder(rootPath);
+    contextRoot = new ContextRootImpl(resourceProvider, rootFolder);
     contextRoot.included.add(rootFolder);
   }
 
   test_analyzedFiles() {
-    String optionsPath =
-        provider.convertPath('/test/root/analysis_options.yaml');
-    String readmePath = provider.convertPath('/test/root/README.md');
-    String aPath = provider.convertPath('/test/root/lib/a.dart');
-    String bPath = provider.convertPath('/test/root/lib/src/b.dart');
-    String excludePath = provider.convertPath('/test/root/exclude');
-    String cPath = provider.convertPath('/test/root/exclude/c.dart');
+    String optionsPath = convertPath('/test/root/analysis_options.yaml');
+    String readmePath = convertPath('/test/root/README.md');
+    String aPath = convertPath('/test/root/lib/a.dart');
+    String bPath = convertPath('/test/root/lib/src/b.dart');
+    String excludePath = convertPath('/test/root/exclude');
+    String cPath = convertPath('/test/root/exclude/c.dart');
 
-    provider.newFile(optionsPath, '');
-    provider.newFile(readmePath, '');
-    provider.newFile(aPath, '');
-    provider.newFile(bPath, '');
-    provider.newFile(cPath, '');
-    contextRoot.excluded.add(provider.newFolder(excludePath));
+    newFile(optionsPath);
+    newFile(readmePath);
+    newFile(aPath);
+    newFile(bPath);
+    newFile(cPath);
+    contextRoot.excluded.add(newFolder(excludePath));
 
     expect(contextRoot.analyzedFiles(),
         unorderedEquals([optionsPath, readmePath, aPath, bPath]));
   }
 
   test_isAnalyzed_explicitlyExcluded() {
-    String excludePath = provider.convertPath('/test/root/exclude');
-    String filePath = provider.convertPath('/test/root/exclude/root.dart');
-    contextRoot.excluded.add(provider.newFolder(excludePath));
+    String excludePath = convertPath('/test/root/exclude');
+    String filePath = convertPath('/test/root/exclude/root.dart');
+    contextRoot.excluded.add(newFolder(excludePath));
     expect(contextRoot.isAnalyzed(filePath), isFalse);
   }
 
   test_isAnalyzed_explicitlyExcluded_same() {
-    String aPath = provider.convertPath('/test/root/lib/a.dart');
-    String bPath = provider.convertPath('/test/root/lib/b.dart');
-    File aFile = provider.getFile(aPath);
+    String aPath = convertPath('/test/root/lib/a.dart');
+    String bPath = convertPath('/test/root/lib/b.dart');
+    File aFile = getFile(aPath);
 
     contextRoot.excluded.add(aFile);
 
@@ -67,26 +65,26 @@
   }
 
   test_isAnalyzed_implicitlyExcluded_dot_analysisOptions() {
-    String filePath = provider.convertPath('/test/root/lib/.analysis_options');
+    String filePath = convertPath('/test/root/lib/.analysis_options');
     expect(contextRoot.isAnalyzed(filePath), isFalse);
   }
 
   test_isAnalyzed_implicitlyExcluded_dot_packages() {
-    String filePath = provider.convertPath('/test/root/lib/.packages');
+    String filePath = convertPath('/test/root/lib/.packages');
     expect(contextRoot.isAnalyzed(filePath), isFalse);
   }
 
   test_isAnalyzed_included() {
-    String filePath = provider.convertPath('/test/root/lib/root.dart');
+    String filePath = convertPath('/test/root/lib/root.dart');
     expect(contextRoot.isAnalyzed(filePath), isTrue);
   }
 
   test_isAnalyzed_included_same() {
-    String aPath = provider.convertPath('/test/root/lib/a.dart');
-    String bPath = provider.convertPath('/test/root/lib/b.dart');
-    File aFile = provider.getFile(aPath);
+    String aPath = convertPath('/test/root/lib/a.dart');
+    String bPath = convertPath('/test/root/lib/b.dart');
+    File aFile = getFile(aPath);
 
-    contextRoot = new ContextRootImpl(provider, rootFolder);
+    contextRoot = new ContextRootImpl(resourceProvider, rootFolder);
     contextRoot.included.add(aFile);
 
     expect(contextRoot.isAnalyzed(aPath), isTrue);
@@ -94,8 +92,8 @@
   }
 
   test_isAnalyzed_packagesDirectory_analyzed() {
-    String folderPath = provider.convertPath('/test/root/lib/packages');
-    provider.newFolder(folderPath);
+    String folderPath = convertPath('/test/root/lib/packages');
+    newFolder(folderPath);
     expect(contextRoot.isAnalyzed(folderPath), isTrue);
   }
 }
diff --git a/pkg/analyzer/test/src/dart/analysis/dependency/base.dart b/pkg/analyzer/test/src/dart/analysis/dependency/base.dart
new file mode 100644
index 0000000..8df8a047
--- /dev/null
+++ b/pkg/analyzer/test/src/dart/analysis/dependency/base.dart
@@ -0,0 +1,184 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/src/dart/analysis/dependency/library_builder.dart';
+import 'package:analyzer/src/dart/analysis/dependency/node.dart';
+import 'package:meta/meta.dart';
+import 'package:test/test.dart';
+
+import '../../resolution/driver_resolution.dart';
+
+class BaseDependencyTest extends DriverResolutionTest {
+//  DependencyTracker tracker;
+  String a;
+  String b;
+  String c;
+  Uri aUri;
+  Uri bUri;
+  Uri cUri;
+
+  bool hasDartCore = false;
+
+  void assertNodes(
+    List<DependencyNode> actualNodes,
+    List<ExpectedNode> expectedNodes,
+  ) {
+    expect(actualNodes, hasLength(expectedNodes.length));
+    for (var expectedNode in expectedNodes) {
+      var topNode = _getNode(
+        actualNodes,
+        uri: expectedNode.uri,
+        name: expectedNode.name,
+        kind: expectedNode.kind,
+      );
+
+      if (expectedNode.classMembers != null) {
+        assertNodes(topNode.classMembers, expectedNode.classMembers);
+      } else {
+        expect(topNode.classMembers, isNull);
+      }
+
+      if (expectedNode.classTypeParameters != null) {
+        assertNodes(
+          topNode.classTypeParameters,
+          expectedNode.classTypeParameters,
+        );
+      } else {
+        expect(topNode.classTypeParameters, isNull);
+      }
+    }
+  }
+
+  Future<Library> buildTestLibrary(String path, String content) async {
+//    if (!hasDartCore) {
+//      hasDartCore = true;
+//      await _addLibraryByUri('dart:core');
+//      await _addLibraryByUri('dart:async');
+//      await _addLibraryByUri('dart:math');
+//      await _addLibraryByUri('dart:_internal');
+//    }
+
+    newFile(path, content: content);
+    driver.changeFile(path);
+
+    var units = await _resolveLibrary(path);
+    var uri = units.first.declaredElement.source.uri;
+
+    return buildLibrary(uri, units, _ReferenceCollector());
+
+//    tracker.addLibrary(uri, units);
+//
+//    var library = tracker.libraries[uri];
+//    expect(library, isNotNull);
+//
+//    return library;
+  }
+
+  DependencyNode getNode(Library library,
+      {@required Uri uri,
+      @required String name,
+      DependencyNodeKind kind,
+      String memberOf,
+      String typeParameterOf}) {
+    var nodes = library.declaredNodes;
+    if (memberOf != null) {
+      var class_ = _getNode(nodes, uri: aUri, name: memberOf);
+      expect(class_.kind,
+          anyOf(DependencyNodeKind.CLASS, DependencyNodeKind.MIXIN));
+      nodes = class_.classMembers;
+    } else if (typeParameterOf != null) {
+      var class_ = _getNode(nodes, uri: aUri, name: typeParameterOf);
+      expect(class_.kind,
+          anyOf(DependencyNodeKind.CLASS, DependencyNodeKind.MIXIN));
+      nodes = class_.classTypeParameters;
+    }
+    return _getNode(nodes, uri: aUri, name: name, kind: kind);
+  }
+
+  @override
+  void setUp() {
+    super.setUp();
+//    var logger = PerformanceLog(null);
+//    tracker = DependencyTracker(logger);
+    a = convertPath('/test/lib/a.dart');
+    b = convertPath('/test/lib/b.dart');
+    c = convertPath('/test/lib/c.dart');
+    aUri = Uri.parse('package:test/a.dart');
+    bUri = Uri.parse('package:test/b.dart');
+    cUri = Uri.parse('package:test/c.dart');
+  }
+
+//  Future _addLibraryByUri(String uri) async {
+//    var path = driver.sourceFactory.forUri(uri).fullName;
+//    var unitResult = await driver.getUnitElement(path);
+//
+//    var signature = ApiSignature();
+//    signature.addString(unitResult.signature);
+//    var signatureBytes = signature.toByteList();
+//
+//    tracker.addLibraryElement(unitResult.element.library, signatureBytes);
+//  }
+
+  DependencyNode _getNode(List<DependencyNode> nodes,
+      {@required Uri uri, @required String name, DependencyNodeKind kind}) {
+    var nameObj = DependencyName(uri, name);
+    for (var node in nodes) {
+      if (node.name == nameObj) {
+        if (kind != null && node.kind != kind) {
+          fail('Expected $kind "$name", found ${node.kind}');
+        }
+        return node;
+      }
+    }
+    fail('Expected to find $uri::$name in:\n    ${nodes.join('\n    ')}');
+  }
+
+  Future<List<CompilationUnit>> _resolveLibrary(String libraryPath) async {
+    var resolvedLibrary = await driver.getResolvedLibrary(libraryPath);
+    return resolvedLibrary.units.map((ru) => ru.unit).toList();
+  }
+}
+
+class ExpectedNode {
+  final Uri uri;
+  final String name;
+  final DependencyNodeKind kind;
+  final List<ExpectedNode> classMembers;
+  final List<ExpectedNode> classTypeParameters;
+
+  ExpectedNode(
+    this.uri,
+    this.name,
+    this.kind, {
+    this.classMembers,
+    this.classTypeParameters,
+  });
+}
+
+/// TODO(scheglov) remove it once we get actual implementation
+class _ReferenceCollector implements ReferenceCollector {
+  @override
+  Uri get libraryUri => null;
+
+  @override
+  void addImportPrefix(String name) {}
+
+  @override
+  void appendExpression(Expression node) {}
+
+  @override
+  void appendFormalParameters(FormalParameterList formalParameterList) {}
+
+  @override
+  void appendFunctionBody(FunctionBody node) {}
+
+  @override
+  void appendTypeAnnotation(TypeAnnotation node) {}
+
+  @override
+  DependencyNodeDependencies finish(List<int> tokenSignature) {
+    return DependencyNodeDependencies(tokenSignature, [], [], [], []);
+  }
+}
diff --git a/pkg/analyzer/test/src/dart/analysis/dependency/declared_nodes_test.dart b/pkg/analyzer/test/src/dart/analysis/dependency/declared_nodes_test.dart
new file mode 100644
index 0000000..fec1f34
--- /dev/null
+++ b/pkg/analyzer/test/src/dart/analysis/dependency/declared_nodes_test.dart
@@ -0,0 +1,1709 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analyzer/src/dart/analysis/dependency/library_builder.dart'
+    hide buildLibrary;
+import 'package:analyzer/src/dart/analysis/dependency/node.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'base.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(DeclaredNodesTest);
+  });
+}
+
+@reflectiveTest
+class DeclaredNodesTest extends BaseDependencyTest {
+  test_class_constructor() async {
+    var library = await buildTestLibrary(a, r'''
+class C {
+  C();
+  C.named();
+}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(
+        aUri,
+        'C',
+        DependencyNodeKind.CLASS,
+        classMembers: [
+          ExpectedNode(aUri, '', DependencyNodeKind.CONSTRUCTOR),
+          ExpectedNode(aUri, 'named', DependencyNodeKind.CONSTRUCTOR),
+        ],
+      ),
+    ]);
+  }
+
+  test_class_constructor_api_tokens_notSame_annotation() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.CONSTRUCTOR,
+      'class X {  X.foo();  }',
+      'class X {  @deprecated X.foo();  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_constructor_api_tokens_notSame_parameter_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.CONSTRUCTOR,
+      'class X {  X.foo();  }',
+      'class X {  X.foo(int a);  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_constructor_api_tokens_notSame_parameter_name_edit_named() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.CONSTRUCTOR,
+      'class X {  X.foo({int a});  }',
+      'class X {  X.foo({int b});  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_constructor_api_tokens_notSame_parameter_type() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.CONSTRUCTOR,
+      'class X {  X.foo(int a);  }',
+      'class X {  X.foo(double a);  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_constructor_api_tokens_same_body() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.CONSTRUCTOR,
+      'class X {  X.foo() { print(1); }  }',
+      'class X {  X.foo() { print(2); }  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_constructor_api_tokens_same_body_add() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.CONSTRUCTOR,
+      'class X {  X.foo();  }',
+      'class X {  X.foo() {}  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_constructor_api_tokens_same_parameter_name_edit_required() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.CONSTRUCTOR,
+      'class X {  X.foo(int a);  }',
+      'class X {  X.foo(int b);  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_constructor_default() async {
+    var library = await buildTestLibrary(a, r'''
+class C {}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(
+        aUri,
+        'C',
+        DependencyNodeKind.CLASS,
+        classMembers: [
+          ExpectedNode(aUri, '', DependencyNodeKind.CONSTRUCTOR),
+        ],
+      ),
+    ]);
+  }
+
+  test_class_field() async {
+    var library = await buildTestLibrary(a, r'''
+class C {
+  int a = 1;
+  int b = 2, c = 3;
+}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(
+        aUri,
+        'C',
+        DependencyNodeKind.CLASS,
+        classMembers: [
+          ExpectedNode(aUri, '', DependencyNodeKind.CONSTRUCTOR),
+          ExpectedNode(aUri, 'a', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'b', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'c', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'a=', DependencyNodeKind.SETTER),
+          ExpectedNode(aUri, 'b=', DependencyNodeKind.SETTER),
+          ExpectedNode(aUri, 'c=', DependencyNodeKind.SETTER),
+        ],
+      ),
+    ]);
+  }
+
+  test_class_field_api_tokens_notSame_annotation() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'class X {  int foo = 0;  }',
+      'class X {  @deprecated int foo = 0;  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_field_api_tokens_notSame_const() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'class X {  int foo = 0;  }',
+      'class X {  const int foo = 0;  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_field_api_tokens_same_final() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'class X {  int foo = 0;  }',
+      'class X {  final int foo = 0;  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_field_api_tokens_typed_notSame_type() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'class X {  int foo = 0;  }',
+      'class X {  num foo = 1;  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_field_api_tokens_typed_same_initializer() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'class X {  int foo = 0;  }',
+      'class X {  int foo = 1;  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_field_api_tokens_untyped_notSame_initializer() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'class X {  var foo = 0;  }',
+      'class X {  var foo = 1.0;  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_field_const() async {
+    var library = await buildTestLibrary(a, r'''
+class X {
+  const foo = 1;
+  const bar = 2;
+}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(
+        aUri,
+        'X',
+        DependencyNodeKind.CLASS,
+        classMembers: [
+          ExpectedNode(aUri, '', DependencyNodeKind.CONSTRUCTOR),
+          ExpectedNode(aUri, 'foo', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'bar', DependencyNodeKind.GETTER),
+        ],
+      ),
+    ]);
+  }
+
+  test_class_field_const_api_tokens_typed_notSame_initializer() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'class X {  const int foo = 0;  }',
+      'class X {  const int foo = 1;  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_field_final() async {
+    var library = await buildTestLibrary(a, r'''
+class X {
+  final foo = 1;
+  final bar = 2;
+}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(
+        aUri,
+        'X',
+        DependencyNodeKind.CLASS,
+        classMembers: [
+          ExpectedNode(aUri, '', DependencyNodeKind.CONSTRUCTOR),
+          ExpectedNode(aUri, 'foo', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'bar', DependencyNodeKind.GETTER),
+        ],
+      ),
+    ]);
+  }
+
+  test_class_field_final_api_tokens_typed_notSame_initializer_constClass() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'class X {  final int foo = 0;  const X();  }',
+      'class X {  final int foo = 1;  const X();  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_field_final_api_tokens_typed_same_initializer() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'class X {  final int foo = 0;  }',
+      'class X {  final int foo = 1;  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_field_final_api_tokens_untyped_notSame_initializer() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'class X {  final foo = 0;  }',
+      'class X {  final foo = 1.0;  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_getter() async {
+    var library = await buildTestLibrary(a, r'''
+class C {
+  int get foo => 0;
+  int get bar => 0;
+}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(
+        aUri,
+        'C',
+        DependencyNodeKind.CLASS,
+        classMembers: [
+          ExpectedNode(aUri, '', DependencyNodeKind.CONSTRUCTOR),
+          ExpectedNode(aUri, 'foo', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'bar', DependencyNodeKind.GETTER),
+        ],
+      ),
+    ]);
+  }
+
+  test_class_getter_api_tokens_notSame_returnType() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'class X {  int get foo => null;  }',
+      'class X {  double get foo => null;  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_method() async {
+    var library = await buildTestLibrary(a, r'''
+class C {
+  void foo() {}
+  void bar() {}
+}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(
+        aUri,
+        'C',
+        DependencyNodeKind.CLASS,
+        classMembers: [
+          ExpectedNode(aUri, '', DependencyNodeKind.CONSTRUCTOR),
+          ExpectedNode(aUri, 'foo', DependencyNodeKind.METHOD),
+          ExpectedNode(aUri, 'bar', DependencyNodeKind.METHOD),
+        ],
+      ),
+    ]);
+  }
+
+  test_class_method_api_tokens_notSame_annotation() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.METHOD,
+      'class X {  void foo() {}  }',
+      'class X {  @deprecated void foo() {}  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_method_api_tokens_notSame_parameter_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.METHOD,
+      'class X {  void foo() {}  }',
+      'class X {  void foo(int a) {}  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_method_api_tokens_notSame_parameter_name_edit_named() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.METHOD,
+      'class X {  void foo({int a}) {}  }',
+      'class X {  void foo({int b}) {}  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_method_api_tokens_notSame_parameter_type() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.METHOD,
+      'class X {  void foo(int a) {}  }',
+      'class X {  void foo(double a) {}  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_method_api_tokens_notSame_returnType() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.METHOD,
+      'class X {  int foo() {}  }',
+      'class X {  double foo() {}  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_method_api_tokens_notSame_typeParameter_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.METHOD,
+      'class X {  void foo() {}  }',
+      'class X {  void foo<T>() {}  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_method_api_tokens_notSame_typeParameter_bound_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.METHOD,
+      'class X {  void foo<T>() {}  }',
+      'class X {  void foo<T extends num>() {}  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_method_api_tokens_same_async_add() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.METHOD,
+      'class X {  foo() {}  }',
+      'class X {  foo() async {}  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_method_api_tokens_same_body() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.METHOD,
+      'class X {  void foo() { print(1); }  }',
+      'class X {  void foo() { print(2); }  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_method_api_tokens_same_parameter_name_edit_required() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.METHOD,
+      'class X {  void foo(int a) {}  }',
+      'class X {  void foo(int b) {}  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_setter() async {
+    var library = await buildTestLibrary(a, r'''
+class C {
+  set foo(_) {}
+  set bar(_) {}
+}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(
+        aUri,
+        'C',
+        DependencyNodeKind.CLASS,
+        classMembers: [
+          ExpectedNode(aUri, '', DependencyNodeKind.CONSTRUCTOR),
+          ExpectedNode(aUri, 'foo', DependencyNodeKind.SETTER),
+          ExpectedNode(aUri, 'bar', DependencyNodeKind.SETTER),
+        ],
+      ),
+    ]);
+  }
+
+  test_class_setter_api_tokens_notSame_returnType() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.SETTER,
+      'class X {  set foo(int a) {}  }',
+      'class X {  set foo(double a) {}  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_setter_api_tokens_same_parameter_name() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.SETTER,
+      'class X {  set foo(int a) {}  }',
+      'class X {  set foo(int b) {}  }',
+      memberOf: 'X',
+    );
+  }
+
+  test_class_typeParameter() async {
+    var library = await buildTestLibrary(a, r'''
+class A<T> {}
+class B<T, U> {}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(
+        aUri,
+        'A',
+        DependencyNodeKind.CLASS,
+        classMembers: [
+          ExpectedNode(aUri, '', DependencyNodeKind.CONSTRUCTOR),
+        ],
+        classTypeParameters: [
+          ExpectedNode(aUri, 'T', DependencyNodeKind.TYPE_PARAMETER),
+        ],
+      ),
+      ExpectedNode(
+        aUri,
+        'B',
+        DependencyNodeKind.CLASS,
+        classMembers: [
+          ExpectedNode(aUri, '', DependencyNodeKind.CONSTRUCTOR),
+        ],
+        classTypeParameters: [
+          ExpectedNode(aUri, 'T', DependencyNodeKind.TYPE_PARAMETER),
+          ExpectedNode(aUri, 'U', DependencyNodeKind.TYPE_PARAMETER),
+        ],
+      ),
+    ]);
+  }
+
+  test_class_typeParameter_api_tokens_notSame_annotation() async {
+    await _assertApiTokenSignatureNotSame(
+      'T',
+      DependencyNodeKind.TYPE_PARAMETER,
+      'class X<T> {}',
+      'class X<@deprecate T> {}',
+      typeParameterOf: 'X',
+    );
+  }
+
+  test_class_typeParameter_api_tokens_notSame_bound_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'T',
+      DependencyNodeKind.TYPE_PARAMETER,
+      'class X<T> {}',
+      'class X<T extends num> {}',
+      typeParameterOf: 'X',
+    );
+  }
+
+  test_class_typeParameter_api_tokens_notSame_bound_edit() async {
+    await _assertApiTokenSignatureNotSame(
+      'T',
+      DependencyNodeKind.TYPE_PARAMETER,
+      'class X<T extends num> {}',
+      'class X<T extends int> {}',
+      typeParameterOf: 'X',
+    );
+  }
+
+  test_library_export() async {
+    var library = await buildTestLibrary(a, r'''
+export 'dart:math';
+export 'package:aaa/aaa.dart';
+export 'package:bbb/bbb.dart' show b1, b2 hide b3;
+''');
+    _assertExports(library, [
+      Export(Uri.parse('dart:math'), []),
+      Export(Uri.parse('package:aaa/aaa.dart'), []),
+      Export(Uri.parse('package:bbb/bbb.dart'), [
+        Combinator(true, ['b1', 'b2']),
+        Combinator(false, ['b3']),
+      ]),
+    ]);
+  }
+
+  test_library_import() async {
+    var library = await buildTestLibrary(a, r'''
+import 'dart:math';
+import 'package:aaa/aaa.dart';
+import 'package:bbb/bbb.dart' as b;
+import 'package:ccc/ccc.dart' show c1, c2 hide c3;
+''');
+    _assertImports(library, [
+      Import(Uri.parse('dart:math'), null, []),
+      Import(Uri.parse('package:aaa/aaa.dart'), null, []),
+      Import(Uri.parse('package:bbb/bbb.dart'), 'b', []),
+      Import(Uri.parse('package:ccc/ccc.dart'), null, [
+        Combinator(true, ['c1', 'c2']),
+        Combinator(false, ['c3']),
+      ]),
+      Import(Uri.parse('dart:core'), null, []),
+    ]);
+  }
+
+  test_library_import_core_explicit() async {
+    var library = await buildTestLibrary(a, r'''
+import 'dart:core' hide List;
+''');
+    _assertImports(library, [
+      Import(Uri.parse('dart:core'), null, [
+        Combinator(false, ['List']),
+      ]),
+    ]);
+  }
+
+  test_library_import_core_implicit() async {
+    var library = await buildTestLibrary(a, '');
+    _assertImports(library, [
+      Import(Uri.parse('dart:core'), null, []),
+    ]);
+  }
+
+  test_unit_class() async {
+    var library = await buildTestLibrary(a, r'''
+class Foo {}
+class Bar {}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(aUri, 'Foo', DependencyNodeKind.CLASS, classMembers: [
+        ExpectedNode(aUri, '', DependencyNodeKind.CONSTRUCTOR),
+      ]),
+      ExpectedNode(aUri, 'Bar', DependencyNodeKind.CLASS, classMembers: [
+        ExpectedNode(aUri, '', DependencyNodeKind.CONSTRUCTOR),
+      ]),
+    ]);
+  }
+
+  test_unit_class_api_tokens_notSame_annotation() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X {}',
+      '@deprecated class X {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_extends_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X {}',
+      'class X extends A {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_extends_edit() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X extends A {}',
+      'class X extends B {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_extends_replace() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X extends A {}',
+      'class X implements A {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_extends_typeArgument() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X extends A {}',
+      'class X extends A<int> {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_implements_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X {}',
+      'class X implements A {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_implements_edit() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X implements A {}',
+      'class X implements B {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_implements_remove() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X implements A {}',
+      'class X {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_implements_remove2() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X implements A, B {}',
+      'class X implements B {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_implements_typeArgument() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X implements A {}',
+      'class X implements A<int> {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_typeParameter_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X {}',
+      'class X<T> {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_typeParameter_add2() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X<T> {}',
+      'class X<T, U> {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_typeParameter_bound_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X<T> {}',
+      'class X<T extends num> {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_with_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X extends A {}',
+      'class X extends A with B {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_with_edit() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X extends A with B {}',
+      'class X extends A with C {}',
+    );
+  }
+
+  test_unit_class_api_tokens_notSame_with_typeArgument() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X extends A with B {}',
+      'class X extends A with B<int> {}',
+    );
+  }
+
+  test_unit_class_api_tokens_same_body() async {
+    await _assertApiTokenSignatureSame(
+      'X',
+      DependencyNodeKind.CLASS,
+      'class X {  }',
+      'class X { void foo() {} }',
+    );
+  }
+
+  test_unit_classTypeAlias() async {
+    var library = await buildTestLibrary(a, r'''
+class X = Object with M;
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(aUri, 'X', DependencyNodeKind.CLASS_TYPE_ALIAS),
+    ]);
+  }
+
+  test_unit_classTypeAlias_api_tokens_notSame_implements_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS_TYPE_ALIAS,
+      'class X = A with M;',
+      'class X = A with M implements I;',
+    );
+  }
+
+  test_unit_classTypeAlias_api_tokens_notSame_implements_edit() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS_TYPE_ALIAS,
+      'class X = A with M implements I;',
+      'class X = A with M implements J;',
+    );
+  }
+
+  test_unit_classTypeAlias_api_tokens_notSame_implements_remove() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS_TYPE_ALIAS,
+      'class X = A with M implements I;',
+      'class X = A with M;',
+    );
+  }
+
+  test_unit_classTypeAlias_api_tokens_notSame_implements_typeArgument() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS_TYPE_ALIAS,
+      'class X = A with M implements I;',
+      'class X = A with M implements I<int>;',
+    );
+  }
+
+  test_unit_classTypeAlias_api_tokens_notSame_super() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS_TYPE_ALIAS,
+      'class X = A with M;',
+      'class X = B with M;',
+    );
+  }
+
+  test_unit_classTypeAlias_api_tokens_notSame_super_typeArgument() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS_TYPE_ALIAS,
+      'class X = A with M;',
+      'class X = A<int> with M;',
+    );
+  }
+
+  test_unit_classTypeAlias_api_tokens_notSame_typeParameter_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS_TYPE_ALIAS,
+      'class X = A with M;',
+      'class X<T> = A with M;',
+    );
+  }
+
+  test_unit_classTypeAlias_api_tokens_notSame_typeParameter_add2() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS_TYPE_ALIAS,
+      'class X<T> = A with M;',
+      'class X<T, U> = A with M;',
+    );
+  }
+
+  test_unit_classTypeAlias_api_tokens_notSame_typeParameter_bound_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS_TYPE_ALIAS,
+      'class X<T> = A with M;',
+      'class X<T extends num> = A with M;',
+    );
+  }
+
+  test_unit_classTypeAlias_api_tokens_notSame_with_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS_TYPE_ALIAS,
+      'class X = A with M;',
+      'class X = A with M, N;',
+    );
+  }
+
+  test_unit_classTypeAlias_api_tokens_notSame_with_edit() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS_TYPE_ALIAS,
+      'class X = A with M;',
+      'class X = A with N;',
+    );
+  }
+
+  test_unit_classTypeAlias_api_tokens_notSame_with_typeArgument() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.CLASS_TYPE_ALIAS,
+      'class X = A with M;',
+      'class X = A with M<int>;',
+    );
+  }
+
+  test_unit_enumDeclaration() async {
+    var library = await buildTestLibrary(a, r'''
+enum Foo {a, b, c}
+enum Bar {d, e, f}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(
+        aUri,
+        'Foo',
+        DependencyNodeKind.ENUM,
+        classMembers: [
+          ExpectedNode(aUri, 'a', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'b', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'c', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'index', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'values', DependencyNodeKind.GETTER),
+        ],
+      ),
+      ExpectedNode(
+        aUri,
+        'Bar',
+        DependencyNodeKind.ENUM,
+        classMembers: [
+          ExpectedNode(aUri, 'd', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'e', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'f', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'index', DependencyNodeKind.GETTER),
+          ExpectedNode(aUri, 'values', DependencyNodeKind.GETTER),
+        ],
+      ),
+    ]);
+  }
+
+  test_unit_function() async {
+    var library = await buildTestLibrary(a, r'''
+void foo() {}
+void bar() {}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(aUri, 'foo', DependencyNodeKind.FUNCTION),
+      ExpectedNode(aUri, 'bar', DependencyNodeKind.FUNCTION),
+    ]);
+  }
+
+  test_unit_function_api_tokens_notSame_annotation() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.FUNCTION,
+      'void foo() {}',
+      '@deprecated void foo() {}',
+    );
+  }
+
+  test_unit_function_api_tokens_notSame_parameter_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.FUNCTION,
+      'void foo() {}',
+      'void foo(int a) {}',
+    );
+  }
+
+  test_unit_function_api_tokens_notSame_parameter_name_edit_named() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.FUNCTION,
+      'void foo({int a}) {}',
+      'void foo({int b}) {}',
+    );
+  }
+
+  test_unit_function_api_tokens_notSame_parameter_type() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.FUNCTION,
+      'void foo(int a) {}',
+      'void foo(double a) {}',
+    );
+  }
+
+  test_unit_function_api_tokens_notSame_returnType() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.FUNCTION,
+      'int foo() {}',
+      'num foo() {}',
+    );
+  }
+
+  test_unit_function_api_tokens_notSame_typeParameter_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.FUNCTION,
+      'void foo() {}',
+      'void foo<T>() {}',
+    );
+  }
+
+  test_unit_function_api_tokens_notSame_typeParameter_bound_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.FUNCTION,
+      'void foo<T>() {}',
+      'void foo<T extends num>() {}',
+    );
+  }
+
+  test_unit_function_api_tokens_same_async_add() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.FUNCTION,
+      'foo() {}',
+      'foo() async {}',
+    );
+  }
+
+  test_unit_function_api_tokens_same_body() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.FUNCTION,
+      'void foo() { print(1); }',
+      'void foo() { print(2); }',
+    );
+  }
+
+  test_unit_function_api_tokens_same_parameter_name_edit_required() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.FUNCTION,
+      'void foo(int a) {}',
+      'void foo(int b) {}',
+    );
+  }
+
+  test_unit_function_api_tokens_same_syncStar_add() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.FUNCTION,
+      'foo() {}',
+      'foo() sync* {}',
+    );
+  }
+
+  test_unit_functionTypeAlias() async {
+    var library = await buildTestLibrary(a, r'''
+typedef void Foo();
+typedef void Bar();
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(aUri, 'Foo', DependencyNodeKind.FUNCTION_TYPE_ALIAS),
+      ExpectedNode(aUri, 'Bar', DependencyNodeKind.FUNCTION_TYPE_ALIAS),
+    ]);
+  }
+
+  test_unit_functionTypeAlias_api_tokens_notSame_annotation() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.FUNCTION_TYPE_ALIAS,
+      'typedef void Foo();',
+      '@deprecated typedef void Foo();',
+    );
+  }
+
+  test_unit_functionTypeAlias_api_tokens_notSame_parameter_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.FUNCTION_TYPE_ALIAS,
+      'typedef void Foo();',
+      'typedef void Foo(int a);',
+    );
+  }
+
+  test_unit_functionTypeAlias_api_tokens_notSame_parameter_name_edit_named() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.FUNCTION_TYPE_ALIAS,
+      'typedef void Foo({int a});',
+      'typedef void Foo({int b});',
+    );
+  }
+
+  test_unit_functionTypeAlias_api_tokens_notSame_parameter_type() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.FUNCTION_TYPE_ALIAS,
+      'typedef void Foo(int a);',
+      'typedef void Foo(double a);',
+    );
+  }
+
+  test_unit_functionTypeAlias_api_tokens_notSame_returnType() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.FUNCTION_TYPE_ALIAS,
+      'typedef int Foo();',
+      'typedef num Foo();',
+    );
+  }
+
+  test_unit_functionTypeAlias_api_tokens_notSame_typeParameter_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.FUNCTION_TYPE_ALIAS,
+      'typedef void Foo();',
+      'typedef void Foo<T>();',
+    );
+  }
+
+  test_unit_functionTypeAlias_api_tokens_notSame_typeParameter_bound_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.FUNCTION_TYPE_ALIAS,
+      'typedef void Foo<T>();',
+      'typedef void Foo<T extends num>();',
+    );
+  }
+
+  test_unit_functionTypeAlias_api_tokens_same_comment() async {
+    await _assertApiTokenSignatureSame(
+      'Foo',
+      DependencyNodeKind.FUNCTION_TYPE_ALIAS,
+      'typedef int Foo();',
+      '/* text */ typedef int Foo();',
+    );
+  }
+
+  test_unit_functionTypeAlias_api_tokens_same_parameter_name_edit_required() async {
+    await _assertApiTokenSignatureSame(
+      'Foo',
+      DependencyNodeKind.FUNCTION_TYPE_ALIAS,
+      'typedef void Foo(int a);',
+      'typedef void Foo(int b);',
+    );
+  }
+
+  test_unit_genericTypeAlias() async {
+    var library = await buildTestLibrary(a, r'''
+typedef Foo = void Function();
+typedef Bar = void Function();
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(aUri, 'Foo', DependencyNodeKind.GENERIC_TYPE_ALIAS),
+      ExpectedNode(aUri, 'Bar', DependencyNodeKind.GENERIC_TYPE_ALIAS),
+    ]);
+  }
+
+  test_unit_genericTypeAlias_api_tokens_notSame_annotation() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      'typedef Foo = void Function();',
+      '@deprecated typedef Foo = void Function();',
+    );
+  }
+
+  test_unit_genericTypeAlias_api_tokens_notSame_parameter_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      'typedef Foo = void Function();',
+      'typedef Foo = void Function(int);',
+    );
+  }
+
+  test_unit_genericTypeAlias_api_tokens_notSame_parameter_kind() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      'typedef Foo = void Function(int a);',
+      'typedef Foo = void Function([int a]);',
+    );
+  }
+
+  test_unit_genericTypeAlias_api_tokens_notSame_parameter_name_add_positional() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      'typedef Foo = void Function([int]);',
+      'typedef Foo = void Function([int a]);',
+    );
+  }
+
+  test_unit_genericTypeAlias_api_tokens_notSame_parameter_name_edit_named() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      'typedef Foo = void Function({int a});',
+      'typedef Foo = void Function({int b});',
+    );
+  }
+
+  test_unit_genericTypeAlias_api_tokens_notSame_parameter_name_edit_positional() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      'typedef Foo = void Function([int]);',
+      'typedef Foo = void Function([int a]);',
+    );
+  }
+
+  test_unit_genericTypeAlias_api_tokens_notSame_returnType() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      'typedef Foo = int Function();',
+      'typedef Foo = double Function();',
+    );
+  }
+
+  test_unit_genericTypeAlias_api_tokens_notSame_typeParameter2_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      'typedef Foo = void Function();',
+      'typedef Foo = void Function<T>();',
+    );
+  }
+
+  test_unit_genericTypeAlias_api_tokens_notSame_typeParameter2_bound_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      'typedef Foo = void Function<T>();',
+      'typedef Foo = void Function<T extends num>();',
+    );
+  }
+
+  test_unit_genericTypeAlias_api_tokens_notSame_typeParameter_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      'typedef Foo = void Function();',
+      'typedef Foo<T> = void Function();',
+    );
+  }
+
+  test_unit_genericTypeAlias_api_tokens_notSame_typeParameter_bound_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'Foo',
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      'typedef Foo<T> = void Function();',
+      'typedef Foo<T extends num> = void Function();',
+    );
+  }
+
+  test_unit_genericTypeAlias_api_tokens_same_parameter_name_add_required() async {
+    await _assertApiTokenSignatureSame(
+      'Foo',
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      'typedef Foo = void Function(int);',
+      'typedef Foo = void Function(int a);',
+    );
+  }
+
+  test_unit_genericTypeAlias_api_tokens_same_parameter_name_edit_required() async {
+    await _assertApiTokenSignatureSame(
+      'Foo',
+      DependencyNodeKind.GENERIC_TYPE_ALIAS,
+      'typedef Foo = void Function(int a);',
+      'typedef Foo = void Function(int b);',
+    );
+  }
+
+  test_unit_getter() async {
+    var library = await buildTestLibrary(a, r'''
+int get foo => 0;
+int get bar => 0;
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(aUri, 'foo', DependencyNodeKind.GETTER),
+      ExpectedNode(aUri, 'bar', DependencyNodeKind.GETTER),
+    ]);
+  }
+
+  test_unit_getter_api_tokens_notSame_annotation() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'int get foo => 0;',
+      '@deprecated int get foo => 0;',
+    );
+  }
+
+  test_unit_getter_api_tokens_notSame_returnType() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'int get foo => 0;',
+      'num get foo => 0;',
+    );
+  }
+
+  test_unit_getter_api_tokens_same_body() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'int get foo => 0;',
+      'int get foo => 1;',
+    );
+  }
+
+  test_unit_mixin() async {
+    var library = await buildTestLibrary(a, r'''
+mixin Foo {}
+mixin Bar {}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(aUri, 'Foo', DependencyNodeKind.MIXIN,
+          classMembers: const []),
+      ExpectedNode(aUri, 'Bar', DependencyNodeKind.MIXIN,
+          classMembers: const []),
+    ]);
+  }
+
+  test_unit_mixin_api_tokens_notSame_annotation() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X {}',
+      '@deprecated mixin X {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_notSame_implements_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X {}',
+      'mixin X implements A {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_notSame_implements_edit() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X implements A {}',
+      'mixin X implements B {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_notSame_implements_remove() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X implements A {}',
+      'mixin X {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_notSame_implements_remove2() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X implements A, B {}',
+      'mixin X implements B {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_notSame_implements_typeArgument() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X implements A {}',
+      'mixin X implements A<int> {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_notSame_on_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X {}',
+      'mixin X on A {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_notSame_on_add2() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X on A {}',
+      'mixin X on A, B {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_notSame_on_edit() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X on A {}',
+      'mixin X on B {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_notSame_on_replace() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X on A {}',
+      'mixin X implements A {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_notSame_on_typeArgument() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X on A {}',
+      'mixin X on A<int> {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_notSame_typeParameter_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X {}',
+      'mixin X<T> {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_notSame_typeParameter_add2() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X<T> {}',
+      'mixin X<T, U> {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_notSame_typeParameter_bound_add() async {
+    await _assertApiTokenSignatureNotSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X<T> {}',
+      'mixin X<T extends num> {}',
+    );
+  }
+
+  test_unit_mixin_api_tokens_same_body() async {
+    await _assertApiTokenSignatureSame(
+      'X',
+      DependencyNodeKind.MIXIN,
+      'mixin X {  }',
+      'mixin X { void foo() {} }',
+    );
+  }
+
+  test_unit_setter() async {
+    var library = await buildTestLibrary(a, r'''
+void set foo(_) {}
+void set bar(_) {}
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(aUri, 'foo=', DependencyNodeKind.SETTER),
+      ExpectedNode(aUri, 'bar=', DependencyNodeKind.SETTER),
+    ]);
+  }
+
+  test_unit_setter_api_tokens_notSame_annotation() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo=',
+      DependencyNodeKind.SETTER,
+      'set foo(int a) {}',
+      '@deprecated set foo(int a) {}',
+    );
+  }
+
+  test_unit_setter_api_tokens_notSame_parameter_type() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo=',
+      DependencyNodeKind.SETTER,
+      'set foo(int a) {}',
+      'set foo(num a) {}',
+    );
+  }
+
+  test_unit_setter_api_tokens_same_body() async {
+    await _assertApiTokenSignatureSame(
+      'foo=',
+      DependencyNodeKind.SETTER,
+      'set foo(int a) { print(0); }',
+      'set foo(int a) { print(1); }',
+    );
+  }
+
+  test_unit_variable() async {
+    var library = await buildTestLibrary(a, r'''
+int a = 1;
+int b = 2, c = 3;
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(aUri, 'a', DependencyNodeKind.GETTER),
+      ExpectedNode(aUri, 'b', DependencyNodeKind.GETTER),
+      ExpectedNode(aUri, 'c', DependencyNodeKind.GETTER),
+      ExpectedNode(aUri, 'a=', DependencyNodeKind.SETTER),
+      ExpectedNode(aUri, 'b=', DependencyNodeKind.SETTER),
+      ExpectedNode(aUri, 'c=', DependencyNodeKind.SETTER),
+    ]);
+  }
+
+  test_unit_variable_api_tokens_notSame_annotation() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'int foo = 0;',
+      '@deprecated int foo = 0;',
+    );
+  }
+
+  test_unit_variable_api_tokens_notSame_const() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'int foo = 0;',
+      'const int foo = 0;',
+    );
+  }
+
+  test_unit_variable_api_tokens_same_final() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'int foo = 0;',
+      'final int foo = 0;',
+    );
+  }
+
+  test_unit_variable_api_tokens_typed_notSame_type() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'int foo = 0;',
+      'num foo = 1;',
+    );
+  }
+
+  test_unit_variable_api_tokens_typed_same_initializer() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'int foo = 0;',
+      'int foo = 1;',
+    );
+  }
+
+  test_unit_variable_api_tokens_untyped_notSame_initializer() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'var foo = 0;',
+      'var foo = 1.0;',
+    );
+  }
+
+  test_unit_variable_const() async {
+    var library = await buildTestLibrary(a, r'''
+const foo = 1;
+const bar = 2;
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(aUri, 'foo', DependencyNodeKind.GETTER),
+      ExpectedNode(aUri, 'bar', DependencyNodeKind.GETTER),
+    ]);
+  }
+
+  test_unit_variable_const_api_tokens_typed_notSame_initializer() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'const int foo = 0;',
+      'const int foo = 1;',
+    );
+  }
+
+  test_unit_variable_final() async {
+    var library = await buildTestLibrary(a, r'''
+final foo = 1;
+final bar = 2;
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(aUri, 'foo', DependencyNodeKind.GETTER),
+      ExpectedNode(aUri, 'bar', DependencyNodeKind.GETTER),
+    ]);
+  }
+
+  test_unit_variable_final_api_tokens_typed_same_initializer() async {
+    await _assertApiTokenSignatureSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'final int foo = 0;',
+      'final int foo = 1;',
+    );
+  }
+
+  test_unit_variable_final_api_tokens_untyped_notSame_initializer() async {
+    await _assertApiTokenSignatureNotSame(
+      'foo',
+      DependencyNodeKind.GETTER,
+      'final foo = 0;',
+      'final foo = 1.0;',
+    );
+  }
+
+  test_unit_variable_final_withoutValue() async {
+    var library = await buildTestLibrary(a, r'''
+final foo;
+final bar;
+''');
+    assertNodes(library.declaredNodes, [
+      ExpectedNode(aUri, 'foo', DependencyNodeKind.GETTER),
+      ExpectedNode(aUri, 'bar', DependencyNodeKind.GETTER),
+    ]);
+  }
+
+  Future<void> _assertApiTokenSignatureNotSame(
+      String name, DependencyNodeKind kind, String codeBefore, String codeAfter,
+      {String memberOf, String typeParameterOf}) async {
+    DependencyNode getNodeA(Library library) {
+      return getNode(
+        library,
+        uri: aUri,
+        name: name,
+        kind: kind,
+        memberOf: memberOf,
+        typeParameterOf: typeParameterOf,
+      );
+    }
+
+    var libraryBefore = await buildTestLibrary(a, codeBefore);
+    var nodeBefore = getNodeA(libraryBefore);
+
+    var libraryAfter = await buildTestLibrary(a, codeAfter);
+    var nodeAfter = getNodeA(libraryAfter);
+
+    expect(
+      nodeAfter.api.tokenSignatureHex,
+      isNot(nodeBefore.api.tokenSignatureHex),
+    );
+  }
+
+  Future<void> _assertApiTokenSignatureSame(
+      String name, DependencyNodeKind kind, String codeBefore, String codeAfter,
+      {String memberOf, String typeParameterOf}) async {
+    DependencyNode getNodeA(Library library) {
+      return getNode(
+        library,
+        uri: aUri,
+        name: name,
+        kind: kind,
+        memberOf: memberOf,
+        typeParameterOf: typeParameterOf,
+      );
+    }
+
+    var libraryBefore = await buildTestLibrary(a, codeBefore);
+    var nodeBefore = getNodeA(libraryBefore);
+
+    var libraryAfter = await buildTestLibrary(a, codeAfter);
+    var nodeAfter = getNodeA(libraryAfter);
+
+    expect(
+      nodeAfter.api.tokenSignatureHex,
+      nodeBefore.api.tokenSignatureHex,
+    );
+  }
+
+  static void _assertExports(Library library, List<Export> expectedExports) {
+    var actualExports = library.exports;
+    expect(actualExports, hasLength(expectedExports.length));
+    for (var i = 0; i < actualExports.length; ++i) {
+      var actual = actualExports[i];
+      var expected = expectedExports[i];
+      if (actual.uri != expected.uri ||
+          !_equalCombinators(actual.combinators, expected.combinators)) {
+        fail('Expected: $expected\nActual: $actual');
+      }
+    }
+  }
+
+  static void _assertImports(Library library, List<Import> expectedImports) {
+    var actualImports = library.imports;
+    expect(actualImports, hasLength(expectedImports.length));
+    for (var i = 0; i < actualImports.length; ++i) {
+      var actual = actualImports[i];
+      var expected = expectedImports[i];
+      if (actual.uri != expected.uri ||
+          actual.prefix != expected.prefix ||
+          !_equalCombinators(actual.combinators, expected.combinators)) {
+        fail('Expected: $expected\nActual: $actual');
+      }
+    }
+  }
+
+  static bool _equalCombinators(List<Combinator> actualCombinators,
+      List<Combinator> expectedCombinators) {
+    if (actualCombinators.length != expectedCombinators.length) {
+      return false;
+    }
+
+    for (var i = 0; i < actualCombinators.length; i++) {
+      var actualCombinator = actualCombinators[i];
+      var expectedCombinator = expectedCombinators[i];
+      if (actualCombinator.isShow != expectedCombinator.isShow) {
+        return false;
+      }
+
+      var actualNames = actualCombinator.names;
+      var expectedNames = expectedCombinator.names;
+      if (actualNames.length != expectedNames.length) {
+        return false;
+      }
+      for (var j = 0; j < actualNames.length; j++) {
+        if (actualNames[j] != expectedNames[j]) {
+          return false;
+        }
+      }
+    }
+
+    return true;
+  }
+}
diff --git a/pkg/analyzer/test/src/dart/analysis/driver_resolution_test.dart b/pkg/analyzer/test/src/dart/analysis/driver_resolution_test.dart
index 7841c96..2ca7531 100644
--- a/pkg/analyzer/test/src/dart/analysis/driver_resolution_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/driver_resolution_test.dart
@@ -1,17 +1,19 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:async';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/dart/analysis/experiments.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/member.dart';
 import 'package:analyzer/src/dart/element/type.dart';
+import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/utilities_dart.dart';
 import 'package:test/test.dart';
@@ -25,6 +27,7 @@
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(AnalysisDriverResolutionTest);
+    defineReflectiveTests(DriverResolutionWithExperimentsTest);
   });
 }
 
@@ -41,7 +44,7 @@
  */
 @reflectiveTest
 class AnalysisDriverResolutionTest extends BaseAnalysisDriverTest {
-  AnalysisResult result;
+  ResolvedUnitResult result;
   FindNode findNode;
   FindElement findElement;
 
@@ -376,7 +379,7 @@
   }
 
   test_annotation_onDirective_part() async {
-    provider.newFile(_p('/test/lib/a.dart'), r'''
+    newFile('/test/lib/a.dart', content: r'''
 part of 'test.dart';
 ''');
     addTestFile(r'''
@@ -399,8 +402,7 @@
   }
 
   test_annotation_onDirective_partOf() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 part 'test.dart';
 ''');
     addTestFile(r'''
@@ -409,7 +411,6 @@
 
 const a = 1;
 ''');
-    driver.addFile(a);
     await resolveTestFile();
 
     var directive = findNode.partOf('a.dart');
@@ -522,8 +523,7 @@
   }
 
   test_annotation_prefixed_classField() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 class A {
   static const a = 1;
 }
@@ -563,8 +563,7 @@
   }
 
   test_annotation_prefixed_constructor() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 class A {
   const A(int a, {int b});
 }
@@ -605,8 +604,7 @@
   }
 
   test_annotation_prefixed_constructor_named() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 class A {
   const A.named(int a, {int b});
 }
@@ -649,8 +647,7 @@
   }
 
   test_annotation_prefixed_topLevelVariable() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 const topAnnotation = 1;
 ''');
     addTestFile(r'''
@@ -1538,8 +1535,7 @@
 
   @failingTest
   test_deferredImport_loadLibrary_invocation() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, '');
+    newFile('/test/lib/a.dart');
     addTestFile(r'''
 import 'a.dart' deferred as a;
 main() {
@@ -1564,8 +1560,7 @@
 
   @failingTest
   test_deferredImport_loadLibrary_invocation_argument() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, '');
+    newFile('/test/lib/a.dart');
     addTestFile(r'''
 import 'a.dart' deferred as a;
 var b = 1;
@@ -1599,8 +1594,7 @@
   }
 
   test_deferredImport_loadLibrary_tearOff() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, '');
+    newFile('/test/lib/a.dart');
     addTestFile(r'''
 import 'a.dart' deferred as a;
 main() {
@@ -1623,8 +1617,7 @@
   }
 
   test_deferredImport_variable() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, 'var v = 0;');
+    newFile('/test/lib/a.dart', content: 'var v = 0;');
     addTestFile(r'''
 import 'a.dart' deferred as a;
 main() async {
@@ -1664,8 +1657,7 @@
   }
 
   test_directive_export() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 class MyClass {}
 int myVar;
 int get myGetter => 0;
@@ -1713,8 +1705,7 @@
   }
 
   test_directive_import_hide() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 class MyClass {}
 int myVar;
 int get myGetter => 0;
@@ -1762,8 +1753,7 @@
   }
 
   test_directive_import_show() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 class MyClass {}
 int myVar;
 int get myGetter => 0;
@@ -2325,8 +2315,7 @@
   }
 
   test_instanceCreation_prefixed() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 class C<T> {
   C(T p);
   C.named(T p);
@@ -3567,7 +3556,6 @@
     assertType(aRef, 'int');
   }
 
-  @failingTest
   test_invalid_methodInvocation_simpleIdentifier() async {
     addTestFile(r'''
 int foo = 0;
@@ -3720,8 +3708,7 @@
 
   @failingTest
   test_invalid_nonTypeAsType_topLevelFunction_prefixed() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 int T() => 0;
 ''');
     addTestFile(r'''
@@ -3789,8 +3776,7 @@
 
   @failingTest
   test_invalid_nonTypeAsType_topLevelVariable_prefixed() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 int T;
 ''');
     addTestFile(r'''
@@ -5388,8 +5374,8 @@
     expect(target.staticType.toString(), '(int) → double');
 
     SimpleIdentifier methodName = invocation.methodName;
-    expect(methodName.staticElement, same(parameter));
-    expect(methodName.staticType, parameter.type);
+    expect(methodName.staticElement, isNull);
+    expect(methodName.staticType, dynamicType);
   }
 
   test_methodInvocation_instanceMethod_forwardingStub() async {
@@ -5899,7 +5885,7 @@
 
   @failingTest
   test_optionalConst_prefixed() async {
-    provider.newFile(_p('/test/lib/a.dart'), r'''
+    newFile('/test/lib/a.dart', content: r'''
 class C {
   const C();
   const C.named();
@@ -6426,8 +6412,7 @@
   }
 
   test_prefixedIdentifier_importPrefix_className() async {
-    var libPath = _p('/test/lib/lib.dart');
-    provider.newFile(libPath, '''
+    newFile('/test/lib/lib.dart', content: '''
 class MyClass {}
 typedef void MyFunctionTypeAlias();
 int myTopVariable;
@@ -8019,12 +8004,9 @@
   }
 
   test_typeAnnotation_prefixed() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, "export 'a.dart';");
-    provider.newFile(c, "export 'a.dart';");
+    newFile('/test/lib/a.dart', content: 'class A {}');
+    newFile('/test/lib/b.dart', content: "export 'a.dart';");
+    newFile('/test/lib/c.dart', content: "export 'a.dart';");
     addTestFile(r'''
 import 'b.dart' as b;
 import 'c.dart' as c;
@@ -8737,69 +8719,6 @@
     expect(identifier.staticType, isDynamicType);
   }
 
-  test_unresolved_static_call() async {
-    addTestFile('''
-class C {
-  static f() => C.g();
-}
-''');
-    await resolveTestFile();
-    expect(result.errors, isNotEmpty);
-
-    var g = findNode.simple('g()');
-    assertElementNull(g);
-    assertTypeDynamic(g);
-    var invocation = g.parent as MethodInvocation;
-    assertTypeDynamic(invocation);
-    expect(invocation.staticInvokeType, isDynamicType);
-  }
-
-  test_unresolved_static_call_arguments() async {
-    addTestFile('''
-int x;
-class C {
-  static f() => C.g(x);
-}
-''');
-    await resolveTestFile();
-    expect(result.errors, isNotEmpty);
-
-    var x = findNode.simple('x)');
-    assertElement(x, findElement.topGet('x'));
-    assertType(x, 'int');
-  }
-
-  test_unresolved_static_call_same_name_as_type_param() async {
-    addTestFile('''
-class C<T> {
-  static f() => C.T();
-}
-''');
-    await resolveTestFile();
-    expect(result.errors, isNotEmpty);
-
-    var t = findNode.simple('T()');
-    assertElementNull(t);
-    assertTypeDynamic(t);
-    var invocation = t.parent as MethodInvocation;
-    assertTypeDynamic(invocation);
-    expect(invocation.staticInvokeType, isDynamicType);
-  }
-
-  test_unresolved_static_call_type_arguments() async {
-    addTestFile('''
-class C {
-  static f() => C.g<int>();
-}
-''');
-    await resolveTestFile();
-    expect(result.errors, isNotEmpty);
-
-    var intRef = findNode.simple('int>');
-    assertElement(intRef, intType.element);
-    assertType(intRef, 'int');
-  }
-
   /// Assert that the [argument] is associated with the [expected]. If the
   /// [argument] is a [NamedExpression], the name must be resolved to the
   /// parameter.
@@ -8910,7 +8829,7 @@
     expect(identifier.staticType, type);
   }
 
-  List<Statement> _getMainStatements(AnalysisResult result) {
+  List<Statement> _getMainStatements(ResolvedUnitResult result) {
     for (var declaration in result.unit.declarations) {
       if (declaration is FunctionDeclaration &&
           declaration.name.name == 'main') {
@@ -8922,7 +8841,7 @@
   }
 
   TopLevelVariableElement _getTopLevelVariable(
-      AnalysisResult result, String name) {
+      ResolvedUnitResult result, String name) {
     for (var variable in result.unit.declaredElement.topLevelVariables) {
       if (variable.name == name) {
         return variable;
@@ -8931,8 +8850,39 @@
     fail('Not found $name');
   }
 
-  /**
-   * Return the [provider] specific path for the given Posix [path].
-   */
-  String _p(String path) => provider.convertPath(path);
+//  String _p(String path) => convertPath(path);
+}
+
+/**
+ * Resolution tests that are run with all of the experiments enabled.
+ */
+@reflectiveTest
+class DriverResolutionWithExperimentsTest extends BaseAnalysisDriverTest {
+  AnalysisOptionsImpl createAnalysisOptions() => super.createAnalysisOptions()
+    ..enabledExperiments = Experiments.activeExperimentNames;
+
+  test_binaryExpression_gtGtGt() async {
+    addTestFile('''
+class A {
+  A operator >>>(int amount) => this;
+}
+f(A a) {
+  a >>> 3;
+}
+''');
+    var result = await driver.getResult(testFile);
+    CompilationUnit unit = result.unit;
+    MethodDeclaration declaration =
+        (unit.declarations[0] as ClassDeclaration).members[0];
+    ExecutableElement operatorElement = declaration.declaredElement;
+    expect(operatorElement.name, '>>>');
+    ExpressionStatement statement =
+        ((unit.declarations[1] as FunctionDeclaration).functionExpression.body
+                as BlockFunctionBody)
+            .block
+            .statements[0];
+    BinaryExpression binary = statement.expression;
+    expect(binary.operator.type, TokenType.GT_GT_GT);
+    expect(binary.staticElement, operatorElement);
+  }
 }
diff --git a/pkg/analyzer/test/src/dart/analysis/driver_test.dart b/pkg/analyzer/test/src/dart/analysis/driver_test.dart
index 0345738..50b6094 100644
--- a/pkg/analyzer/test/src/dart/analysis/driver_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/driver_test.dart
@@ -1,16 +1,15 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:async';
 
-import 'package:analyzer/dart/analysis/results.dart' as results;
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/error/error.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
@@ -27,11 +26,12 @@
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/summary/idl.dart';
 import 'package:analyzer/src/summary/package_bundle_reader.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../../../utils.dart';
-import '../../context/mock_sdk.dart';
 import 'base.dart';
 
 main() {
@@ -57,8 +57,7 @@
 }
 
 @reflectiveTest
-class AnalysisDriverSchedulerTest {
-  final MemoryResourceProvider provider = new MemoryResourceProvider();
+class AnalysisDriverSchedulerTest with ResourceProviderMixin {
   DartSdk sdk;
   final ByteStore byteStore = new MemoryByteStore();
   final FileContentOverlay contentOverlay = new FileContentOverlay();
@@ -68,28 +67,28 @@
 
   AnalysisDriverScheduler scheduler;
 
-  List<AnalysisResult> allResults = [];
+  List<ResolvedUnitResult> allResults = [];
 
   AnalysisDriver newDriver() {
-    sdk = new MockSdk(resourceProvider: provider);
+    sdk = new MockSdk(resourceProvider: resourceProvider);
     AnalysisDriver driver = new AnalysisDriver(
         scheduler,
         logger,
-        provider,
+        resourceProvider,
         byteStore,
         contentOverlay,
         null,
-        new SourceFactory(
-            [new DartUriResolver(sdk), new ResourceUriResolver(provider)],
-            null,
-            provider),
+        new SourceFactory([
+          new DartUriResolver(sdk),
+          new ResourceUriResolver(resourceProvider)
+        ], null, resourceProvider),
         new AnalysisOptionsImpl());
     driver.results.forEach(allResults.add);
     return driver;
   }
 
   void setUp() {
-    sdk = new MockSdk(resourceProvider: provider);
+    sdk = new MockSdk(resourceProvider: resourceProvider);
     logger = new PerformanceLog(logBuffer);
     scheduler = new AnalysisDriverScheduler(logger);
     scheduler.start();
@@ -99,14 +98,14 @@
     AnalysisDriver driver1 = newDriver();
     AnalysisDriver driver2 = newDriver();
 
-    String a = _p('/a.dart');
-    String b = _p('/b.dart');
-    String c = _p('/c.dart');
-    String d = _p('/d.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, "import 'a.dart';");
-    provider.newFile(c, 'class C {}');
-    provider.newFile(d, "import 'c.dart';");
+    String a = convertPath('/a.dart');
+    String b = convertPath('/b.dart');
+    String c = convertPath('/c.dart');
+    String d = convertPath('/d.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: "import 'a.dart';");
+    newFile(c, content: 'class C {}');
+    newFile(d, content: "import 'c.dart';");
     driver1.addFile(a);
     driver1.addFile(b);
     driver2.addFile(c);
@@ -115,8 +114,8 @@
     await scheduler.waitForIdle();
     allResults.clear();
 
-    provider.updateFile(a, 'class A2 {}');
-    provider.updateFile(c, 'class C2 {}');
+    modifyFile(a, 'class A2 {}');
+    modifyFile(c, 'class C2 {}');
     driver1.changeFile(a);
     driver1.changeFile(c);
     driver2.changeFile(a);
@@ -132,12 +131,12 @@
     AnalysisDriver driver1 = newDriver();
     AnalysisDriver driver2 = newDriver();
 
-    String a = _p('/a.dart');
-    String b = _p('/b.dart');
-    String c = _p('/c.dart');
-    provider.newFile(a, "import 'c.dart';");
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, "import 'b.dart';");
+    String a = convertPath('/a.dart');
+    String b = convertPath('/b.dart');
+    String c = convertPath('/c.dart');
+    newFile(a, content: "import 'c.dart';");
+    newFile(b, content: 'class B {}');
+    newFile(c, content: "import 'b.dart';");
     driver1.addFile(a);
     driver1.addFile(b);
     driver2.addFile(c);
@@ -145,7 +144,7 @@
     await scheduler.waitForIdle();
     allResults.clear();
 
-    provider.updateFile(b, 'class B2 {}');
+    modifyFile(b, 'class B2 {}');
     driver1.changeFile(b);
     driver2.changeFile(b);
 
@@ -159,14 +158,14 @@
     AnalysisDriver driver1 = newDriver();
     AnalysisDriver driver2 = newDriver();
 
-    String a = _p('/a.dart');
-    String b = _p('/b.dart');
-    String c = _p('/c.dart');
-    String d = _p('/d.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, "export 'a.dart';");
-    provider.newFile(c, "import 'b.dart';");
-    provider.newFile(d, "import 'b.dart'; class D extends X {}");
+    String a = convertPath('/a.dart');
+    String b = convertPath('/b.dart');
+    String c = convertPath('/c.dart');
+    String d = convertPath('/d.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: "export 'a.dart';");
+    newFile(c, content: "import 'b.dart';");
+    newFile(d, content: "import 'b.dart'; class D extends X {}");
     driver1.addFile(a);
     driver1.addFile(b);
     driver2.addFile(c);
@@ -175,7 +174,7 @@
     await scheduler.waitForIdle();
     allResults.clear();
 
-    provider.updateFile(a, 'class A2 {}');
+    modifyFile(a, 'class A2 {}');
     driver1.changeFile(a);
     driver2.changeFile(a);
 
@@ -189,19 +188,19 @@
     AnalysisDriver driver1 = newDriver();
     AnalysisDriver driver2 = newDriver();
 
-    String a = _p('/a.dart');
-    String b = _p('/b.dart');
-    String c = _p('/c.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, 'class C {}');
+    String a = convertPath('/a.dart');
+    String b = convertPath('/b.dart');
+    String c = convertPath('/c.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'class B {}');
+    newFile(c, content: 'class C {}');
     driver1.addFile(a);
     driver2.addFile(b);
     driver2.addFile(c);
     driver1.priorityFiles = [a];
     driver2.priorityFiles = [a];
 
-    AnalysisResult result = await driver2.getResult(b);
+    ResolvedUnitResult result = await driver2.getResult(b);
     expect(result.path, b);
 
     await scheduler.status.firstWhere((status) => status.isIdle);
@@ -216,10 +215,10 @@
     AnalysisDriver driver1 = newDriver();
     AnalysisDriver driver2 = newDriver();
 
-    String a = _p('/a.dart');
-    String b = _p('/b.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'class B {}');
+    String a = convertPath('/a.dart');
+    String b = convertPath('/b.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'class B {}');
     driver1.addFile(a);
     driver2.addFile(b);
     driver1.priorityFiles = [a];
@@ -236,10 +235,10 @@
     AnalysisDriver driver1 = newDriver();
     AnalysisDriver driver2 = newDriver();
 
-    String a = _p('/a.dart');
-    String b = _p('/b.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'class B {}');
+    String a = convertPath('/a.dart');
+    String b = convertPath('/b.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'class B {}');
     driver1.addFile(a);
     driver2.addFile(b);
     driver1.priorityFiles = [b];
@@ -256,12 +255,12 @@
     AnalysisDriver driver1 = newDriver();
     AnalysisDriver driver2 = newDriver();
 
-    String a = _p('/a.dart');
-    String b = _p('/b.dart');
-    String c = _p('/c.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, 'class C {}');
+    String a = convertPath('/a.dart');
+    String b = convertPath('/b.dart');
+    String c = convertPath('/c.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'class B {}');
+    newFile(c, content: 'class C {}');
     driver1.addFile(a);
     driver1.addFile(b);
     driver2.addFile(c);
@@ -280,12 +279,12 @@
     AnalysisDriver driver1 = newDriver();
     AnalysisDriver driver2 = newDriver();
 
-    String a = _p('/a.dart');
-    String b = _p('/b.dart');
-    String c = _p('/c.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, 'class C {}');
+    String a = convertPath('/a.dart');
+    String b = convertPath('/b.dart');
+    String c = convertPath('/c.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'class B {}');
+    newFile(c, content: 'class C {}');
     driver1.addFile(a);
     driver2.addFile(b);
     driver2.addFile(c);
@@ -312,10 +311,10 @@
     AnalysisDriver driver1 = newDriver();
     AnalysisDriver driver2 = newDriver();
 
-    String a = _p('/a.dart');
-    String b = _p('/b.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'class B {}');
+    String a = convertPath('/a.dart');
+    String b = convertPath('/b.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'class B {}');
     driver1.addFile(a);
     driver2.addFile(b);
 
@@ -339,21 +338,18 @@
     await driver1.getFilesReferencingName('X');
     expect(allStatuses, isEmpty);
   }
-
-  String _p(String path) => provider.convertPath(path);
 }
 
 @reflectiveTest
 class AnalysisDriverTest extends BaseAnalysisDriverTest {
   void configurePreviewDart2() {
     driver.configure(
-        analysisOptions: new AnalysisOptionsImpl.from(driver.analysisOptions)
-          ..previewDart2 = true);
+        analysisOptions: new AnalysisOptionsImpl.from(driver.analysisOptions));
   }
 
   test_addedFiles() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
 
     driver.addFile(a);
     expect(driver.addedFiles, contains(a));
@@ -372,11 +368,11 @@
   }
 
   test_addFile_shouldRefresh() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
 
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, r'''
+    newFile(a, content: 'class A {}');
+    newFile(b, content: r'''
 import 'a.dart';
 ''');
 
@@ -394,7 +390,7 @@
     assertNumberOfErrorsInB(1);
 
     // Update 'b' to use 'a', no more hints.
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 import 'a.dart';
 main() {
   print(A);
@@ -407,7 +403,7 @@
     // Change 'b' content so that it has a hint.
     // Remove 'b' and add it again.
     // The file 'b' must be refreshed, and the hint must be reported.
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 import 'a.dart';
 ''');
     driver.removeFile(b);
@@ -417,10 +413,10 @@
   }
 
   test_addFile_thenRemove() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'class B {}');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'class B {}');
     driver.addFile(a);
     driver.addFile(b);
 
@@ -435,24 +431,24 @@
   }
 
   test_analyze_resolveDirectives() async {
-    var lib = _p('/test/lib.dart');
-    var part1 = _p('/test/part1.dart');
-    var part2 = _p('/test/part2.dart');
-    provider.newFile(lib, '''
+    var lib = convertPath('/test/lib.dart');
+    var part1 = convertPath('/test/part1.dart');
+    var part2 = convertPath('/test/part2.dart');
+    newFile(lib, content: '''
 library lib;
 part 'part1.dart';
 part 'part2.dart';
 ''');
-    provider.newFile(part1, '''
+    newFile(part1, content: '''
 part of lib;
 ''');
-    provider.newFile(part2, '''
+    newFile(part2, content: '''
 part of 'lib.dart';
 ''');
 
-    AnalysisResult libResult = await driver.getResult(lib);
-    AnalysisResult partResult1 = await driver.getResult(part1);
-    AnalysisResult partResult2 = await driver.getResult(part2);
+    ResolvedUnitResult libResult = await driver.getResult(lib);
+    ResolvedUnitResult partResult1 = await driver.getResult(part1);
+    ResolvedUnitResult partResult2 = await driver.getResult(part2);
 
     CompilationUnit libUnit = libResult.unit;
     CompilationUnit partUnit1 = partResult1.unit;
@@ -486,189 +482,87 @@
   }
 
   test_analyze_resolveDirectives_error_missingLibraryDirective() async {
-    var lib = _p('/test/lib.dart');
-    var part = _p('/test/part.dart');
-    provider.newFile(lib, '''
+    var lib = convertPath('/test/lib.dart');
+    var part = convertPath('/test/part.dart');
+    newFile(lib, content: '''
 part 'part.dart';
 ''');
-    provider.newFile(part, '''
+    newFile(part, content: '''
 part of lib;
 ''');
 
     driver.addFile(lib);
 
-    AnalysisResult libResult = await driver.getResult(lib);
+    ResolvedUnitResult libResult = await driver.getResult(lib);
     List<AnalysisError> errors = libResult.errors;
     expect(errors, hasLength(1));
     expect(errors[0].errorCode, ResolverErrorCode.PART_OF_UNNAMED_LIBRARY);
   }
 
   test_analyze_resolveDirectives_error_partOfDifferentLibrary_byName() async {
-    var lib = _p('/test/lib.dart');
-    var part = _p('/test/part.dart');
-    provider.newFile(lib, '''
+    var lib = convertPath('/test/lib.dart');
+    var part = convertPath('/test/part.dart');
+    newFile(lib, content: '''
 library lib;
 part 'part.dart';
 ''');
-    provider.newFile(part, '''
+    newFile(part, content: '''
 part of someOtherLib;
 ''');
 
     driver.addFile(lib);
 
-    AnalysisResult libResult = await driver.getResult(lib);
+    ResolvedUnitResult libResult = await driver.getResult(lib);
     List<AnalysisError> errors = libResult.errors;
     expect(errors, hasLength(1));
     expect(errors[0].errorCode, StaticWarningCode.PART_OF_DIFFERENT_LIBRARY);
   }
 
   test_analyze_resolveDirectives_error_partOfDifferentLibrary_byUri() async {
-    var lib = _p('/test/lib.dart');
-    var part = _p('/test/part.dart');
-    provider.newFile(lib, '''
+    var lib = convertPath('/test/lib.dart');
+    var part = convertPath('/test/part.dart');
+    newFile(lib, content: '''
 library lib;
 part 'part.dart';
 ''');
-    provider.newFile(part, '''
+    newFile(part, content: '''
 part of 'other_lib.dart';
 ''');
 
     driver.addFile(lib);
 
-    AnalysisResult libResult = await driver.getResult(lib);
+    ResolvedUnitResult libResult = await driver.getResult(lib);
     List<AnalysisError> errors = libResult.errors;
     expect(errors, hasLength(1));
     expect(errors[0].errorCode, StaticWarningCode.PART_OF_DIFFERENT_LIBRARY);
   }
 
   test_analyze_resolveDirectives_error_partOfNonPart() async {
-    var lib = _p('/test/lib.dart');
-    var part = _p('/test/part.dart');
-    provider.newFile(lib, '''
+    var lib = convertPath('/test/lib.dart');
+    var part = convertPath('/test/part.dart');
+    newFile(lib, content: '''
 library lib;
 part 'part.dart';
 ''');
-    provider.newFile(part, '''
+    newFile(part, content: '''
 // no part of directive
 ''');
 
     driver.addFile(lib);
 
-    AnalysisResult libResult = await driver.getResult(lib);
+    ResolvedUnitResult libResult = await driver.getResult(lib);
     List<AnalysisError> errors = libResult.errors;
     expect(errors, hasLength(1));
     expect(errors[0].errorCode, CompileTimeErrorCode.PART_OF_NON_PART);
   }
 
-  test_asyncChangesDuringAnalysis_getErrors() async {
-    var path = _p('/test/lib/test.dart');
-    provider.newFile(path, 'class A {}');
-    driver.addFile(path);
-
-    // Compute and cache errors.
-    await driver.getErrors(path);
-    await waitForIdleWithoutExceptions();
-
-    // Simulate a change that happens during reading the cached errors.
-    bool asyncWorkExecuted = false;
-    driver.test.workToWaitAfterComputingResult = (path) async {
-      await new Future.value(); // the rest will be executed asynchronously
-      provider.updateFile(path, 'class B');
-      driver.changeFile(path);
-      asyncWorkExecuted = true;
-    };
-
-    ErrorsResult result = await driver.getErrors(testFile);
-    expect(asyncWorkExecuted, isTrue);
-    expect(result.errors, isNotEmpty);
-  }
-
-  test_asyncChangesDuringAnalysis_getResult() async {
-    var path = _p('/test/lib/test.dart');
-    provider.newFile(path, 'class A {}');
-    driver.addFile(path);
-
-    // Schedule the result to be computed.
-    Future<AnalysisResult> future1 = driver.getResult(testFile);
-
-    // Simulate a change that happens during computing the result.
-    // We also request a new result, which must include the change.
-    Future<AnalysisResult> future2;
-    bool asyncWorkExecuted = false;
-    driver.test.workToWaitAfterComputingResult = (path) async {
-      provider.updateFile(path, 'class B {}');
-      driver.changeFile(path);
-      future2 = driver.getResult(testFile);
-      asyncWorkExecuted = true;
-    };
-
-    // Both futures complete, with the same result.
-    // The result must be with the new changes.
-    //
-    // It would not be wrong to have "class A {}" in result1, and "class B {}"
-    // in result2, but we test here the actual implementation behaviour.
-    AnalysisResult result1 = await future1;
-    AnalysisResult result2 = await future2;
-    expect(asyncWorkExecuted, isTrue);
-    expect(result2, same(result1));
-    expect(result1.path, testFile);
-    expect(result1.unit, isNotNull);
-    expect((result1.unit.declarations[0] as ClassDeclaration).name.name, 'B');
-  }
-
-  test_asyncChangesDuringAnalysis_resultsStream() async {
-    var path = _p('/test/lib/test.dart');
-    provider.newFile(path, 'class A {}');
-    driver.addFile(path);
-
-    // Simulate a change that happens during computing the result.
-    bool asyncWorkExecuted = false;
-    driver.test.workToWaitAfterComputingResult = (p) async {
-      if (p == path && !asyncWorkExecuted) {
-        provider.updateFile(path, 'class B');
-        driver.changeFile(path);
-        asyncWorkExecuted = true;
-      }
-    };
-
-    await waitForIdleWithoutExceptions();
-    expect(asyncWorkExecuted, isTrue);
-
-    // The last result must have an error.
-    expect(allResults.last.errors, isNotEmpty);
-  }
-
-  test_asyncChangesDuringAnalysis_resultsStream_priority() async {
-    var path = _p('/test/lib/test.dart');
-    provider.newFile(path, 'class A {}');
-    driver.addFile(path);
-    driver.priorityFiles = [path];
-
-    // Simulate a change that happens during computing the result.
-    bool asyncWorkExecuted = false;
-    driver.test.workToWaitAfterComputingResult = (p) async {
-      if (p == path && !asyncWorkExecuted) {
-        provider.updateFile(path, 'class B {}');
-        driver.changeFile(path);
-        asyncWorkExecuted = true;
-      }
-    };
-
-    await waitForIdleWithoutExceptions();
-    expect(asyncWorkExecuted, isTrue);
-
-    // The last unit must have "class B {}".
-    var lastUnit = allResults.last.unit;
-    expect((lastUnit.declarations[0] as ClassDeclaration).name.name, 'B');
-  }
-
   test_cachedPriorityResults() async {
-    var a = _p('/test/bin/a.dart');
-    provider.newFile(a, 'var a = 1;');
+    var a = convertPath('/test/bin/a.dart');
+    newFile(a, content: 'var a = 1;');
 
     driver.priorityFiles = [a];
 
-    AnalysisResult result1 = await driver.getResult(a);
+    ResolvedUnitResult result1 = await driver.getResult(a);
     expect(driver.test.priorityResults, containsPair(a, result1));
 
     await waitForIdleWithoutExceptions();
@@ -676,14 +570,14 @@
 
     // Get the (cached) result, not reported to the stream.
     {
-      AnalysisResult result2 = await driver.getResult(a);
+      ResolvedUnitResult result2 = await driver.getResult(a);
       expect(result2, same(result1));
       expect(allResults, isEmpty);
     }
 
     // Get the (cached) result, reported to the stream.
     {
-      AnalysisResult result2 =
+      ResolvedUnitResult result2 =
           await driver.getResult(a, sendCachedToStream: true);
       expect(result2, same(result1));
 
@@ -693,28 +587,28 @@
   }
 
   test_cachedPriorityResults_flush_onAnyFileChange() async {
-    var a = _p('/test/bin/a.dart');
-    var b = _p('/test/bin/b.dart');
-    provider.newFile(a, 'var a = 1;');
-    provider.newFile(a, 'var b = 2;');
+    var a = convertPath('/test/bin/a.dart');
+    var b = convertPath('/test/bin/b.dart');
+    newFile(a, content: 'var a = 1;');
+    newFile(a, content: 'var b = 2;');
 
     driver.priorityFiles = [a];
 
-    AnalysisResult result1 = await driver.getResult(a);
+    ResolvedUnitResult result1 = await driver.getResult(a);
     expect(driver.test.priorityResults, containsPair(a, result1));
 
     // Change a file.
     // The cache is flushed.
     driver.changeFile(a);
     expect(driver.test.priorityResults, isEmpty);
-    AnalysisResult result2 = await driver.getResult(a);
+    ResolvedUnitResult result2 = await driver.getResult(a);
     expect(driver.test.priorityResults, containsPair(a, result2));
 
     // Add a file.
     // The cache is flushed.
     driver.addFile(b);
     expect(driver.test.priorityResults, isEmpty);
-    AnalysisResult result3 = await driver.getResult(a);
+    ResolvedUnitResult result3 = await driver.getResult(a);
     expect(driver.test.priorityResults, containsPair(a, result3));
 
     // Remove a file.
@@ -724,14 +618,14 @@
   }
 
   test_cachedPriorityResults_flush_onPrioritySetChange() async {
-    var a = _p('/test/bin/a.dart');
-    var b = _p('/test/bin/b.dart');
-    provider.newFile(a, 'var a = 1;');
-    provider.newFile(b, 'var b = 2;');
+    var a = convertPath('/test/bin/a.dart');
+    var b = convertPath('/test/bin/b.dart');
+    newFile(a, content: 'var a = 1;');
+    newFile(b, content: 'var b = 2;');
 
     driver.priorityFiles = [a];
 
-    AnalysisResult result1 = await driver.getResult(a);
+    ResolvedUnitResult result1 = await driver.getResult(a);
     expect(driver.test.priorityResults, hasLength(1));
     expect(driver.test.priorityResults, containsPair(a, result1));
 
@@ -742,7 +636,7 @@
     expect(driver.test.priorityResults, containsPair(a, result1));
 
     // Get the result for "b".
-    AnalysisResult result2 = await driver.getResult(b);
+    ResolvedUnitResult result2 = await driver.getResult(b);
     expect(driver.test.priorityResults, hasLength(2));
     expect(driver.test.priorityResults, containsPair(a, result1));
     expect(driver.test.priorityResults, containsPair(b, result2));
@@ -755,25 +649,25 @@
   }
 
   test_cachedPriorityResults_notPriority() async {
-    var a = _p('/test/bin/a.dart');
-    provider.newFile(a, 'var a = 1;');
+    var a = convertPath('/test/bin/a.dart');
+    newFile(a, content: 'var a = 1;');
 
-    AnalysisResult result1 = await driver.getResult(a);
+    ResolvedUnitResult result1 = await driver.getResult(a);
     expect(driver.test.priorityResults, isEmpty);
 
     // The file is not priority, so its result is not cached.
-    AnalysisResult result2 = await driver.getResult(a);
+    ResolvedUnitResult result2 = await driver.getResult(a);
     expect(result2, isNot(same(result1)));
   }
 
   test_changeFile_implicitlyAnalyzed() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    newFile(a, content: r'''
 import 'b.dart';
 var A = B;
 ''');
-    provider.newFile(b, 'var B = 1;');
+    newFile(b, content: 'var B = 1;');
 
     driver.priorityFiles = [a];
     driver.addFile(a);
@@ -782,13 +676,13 @@
     await waitForIdleWithoutExceptions();
     expect(allResults, hasLength(1));
     {
-      AnalysisResult ar = allResults.firstWhere((r) => r.path == a);
+      ResolvedUnitResult ar = allResults.firstWhere((r) => r.path == a);
       expect(_getTopLevelVarType(ar.unit, 'A'), 'int');
     }
     allResults.clear();
 
     // Change "b" and notify.
-    provider.updateFile(b, 'var B = 1.2;');
+    modifyFile(b, 'var B = 1.2;');
     driver.changeFile(b);
 
     // "b" is not an added file, so it is not scheduled for analysis.
@@ -799,7 +693,7 @@
     await waitForIdleWithoutExceptions();
     expect(allResults, hasLength(1));
     {
-      AnalysisResult ar = allResults.firstWhere((r) => r.path == a);
+      ResolvedUnitResult ar = allResults.firstWhere((r) => r.path == a);
       expect(_getTopLevelVarType(ar.unit, 'A'), 'double');
     }
   }
@@ -812,10 +706,10 @@
   }
 
   test_changeFile_notUsed() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/other/b.dart');
-    provider.newFile(a, '');
-    provider.newFile(b, 'class B1 {}');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/other/b.dart');
+    newFile(a);
+    newFile(b, content: 'class B1 {}');
 
     driver.addFile(a);
 
@@ -824,7 +718,7 @@
 
     // Change "b" and notify.
     // Nothing depends on "b", so nothing is analyzed.
-    provider.updateFile(b, 'class B2 {}');
+    modifyFile(b, 'class B2 {}');
     driver.changeFile(b);
     await waitForIdleWithoutExceptions();
     expect(allResults, isEmpty);
@@ -834,14 +728,14 @@
   }
 
   test_changeFile_selfConsistent() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    newFile(a, content: r'''
 import 'b.dart';
 var A1 = 1;
 var A2 = B1;
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 import 'a.dart';
 var B1 = A1;
 ''');
@@ -854,18 +748,18 @@
     // We have results for both "a" and "b".
     expect(allResults, hasLength(2));
     {
-      AnalysisResult ar = allResults.firstWhere((r) => r.path == a);
+      ResolvedUnitResult ar = allResults.firstWhere((r) => r.path == a);
       expect(_getTopLevelVarType(ar.unit, 'A1'), 'int');
       expect(_getTopLevelVarType(ar.unit, 'A2'), 'int');
     }
     {
-      AnalysisResult br = allResults.firstWhere((r) => r.path == b);
+      ResolvedUnitResult br = allResults.firstWhere((r) => r.path == b);
       expect(_getTopLevelVarType(br.unit, 'B1'), 'int');
     }
 
     // Clear the results and update "a".
     allResults.clear();
-    provider.updateFile(a, r'''
+    modifyFile(a, r'''
 import 'b.dart';
 var A1 = 1.2;
 var A2 = B1;
@@ -877,12 +771,12 @@
     await waitForIdleWithoutExceptions();
     expect(allResults, hasLength(2));
     {
-      AnalysisResult ar = allResults.firstWhere((r) => r.path == a);
+      ResolvedUnitResult ar = allResults.firstWhere((r) => r.path == a);
       expect(_getTopLevelVarType(ar.unit, 'A1'), 'double');
       expect(_getTopLevelVarType(ar.unit, 'A2'), 'double');
     }
     {
-      AnalysisResult br = allResults.firstWhere((r) => r.path == b);
+      ResolvedUnitResult br = allResults.firstWhere((r) => r.path == b);
       expect(_getTopLevelVarType(br.unit, 'B1'), 'double');
     }
   }
@@ -894,14 +788,14 @@
     {
       await waitForIdleWithoutExceptions();
       expect(allResults, hasLength(1));
-      AnalysisResult result = allResults[0];
+      ResolvedUnitResult result = allResults[0];
       expect(result.path, testFile);
       expect(_getTopLevelVarType(result.unit, 'V'), 'int');
     }
 
     // Update the file, but don't notify the driver.
     allResults.clear();
-    provider.updateFile(testFile, 'var V = 1.2;');
+    modifyFile(testFile, 'var V = 1.2;');
 
     // No new results.
     await pumpEventQueue();
@@ -917,7 +811,7 @@
     {
       await waitForIdleWithoutExceptions();
       expect(allResults, hasLength(1));
-      AnalysisResult result = allResults[0];
+      ResolvedUnitResult result = allResults[0];
       expect(result.path, testFile);
       expect(_getTopLevelVarType(result.unit, 'V'), 'double');
     }
@@ -1013,15 +907,15 @@
   test_const_implicitCreation() async {
     configurePreviewDart2();
 
-    var a = _p('/test/bin/a.dart');
-    var b = _p('/test/bin/b.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/bin/a.dart');
+    var b = convertPath('/test/bin/b.dart');
+    newFile(a, content: r'''
 class C {
   const C();
   static const C WARNING = C();
 }
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 import 'a.dart';
 
 class D {
@@ -1032,16 +926,16 @@
 const c = C.WARNING;
 const d = D.WARNING;
 ''');
-    AnalysisResult result = await driver.getResult(b);
+    ResolvedUnitResult result = await driver.getResult(b);
     expect(result.errors, isEmpty);
   }
 
   test_const_implicitCreation_rewrite() async {
     configurePreviewDart2();
 
-    var a = _p('/test/bin/a.dart');
-    var b = _p('/test/bin/b.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/bin/a.dart');
+    var b = convertPath('/test/bin/b.dart');
+    newFile(a, content: r'''
 class A {
   const A();
 }
@@ -1056,14 +950,14 @@
   const C();
 }
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 import 'a.dart';
 
 main() {
   const C();
 }
 ''');
-    AnalysisResult result = await driver.getResult(b);
+    ResolvedUnitResult result = await driver.getResult(b);
     expect(result.errors, isEmpty);
   }
 
@@ -1090,15 +984,15 @@
   }
 
   test_currentSession() async {
-    var a = _p('/a.dart');
+    var a = convertPath('/a.dart');
 
-    provider.newFile(a, 'var V = 1;');
+    newFile(a, content: 'var V = 1;');
     await driver.getResult(a);
 
     var session1 = driver.currentSession;
     expect(session1, isNotNull);
 
-    provider.updateFile(a, 'var V = 2;');
+    modifyFile(a, 'var V = 2;');
     driver.changeFile(a);
     await driver.getResult(a);
 
@@ -1110,19 +1004,19 @@
   }
 
   test_discoverAvailableFiles_packages() async {
-    var t = _p('/test/lib/test.dart');
-    var a1 = _p('/aaa/lib/a1.dart');
-    var a2 = _p('/aaa/lib/src/a2.dart');
-    var a3 = _p('/aaa/lib/a3.txt');
-    var b = _p('/bbb/lib/b.dart');
-    var c = _p('/ccc/lib/c.dart');
+    var t = convertPath('/test/lib/test.dart');
+    var a1 = convertPath('/aaa/lib/a1.dart');
+    var a2 = convertPath('/aaa/lib/src/a2.dart');
+    var a3 = convertPath('/aaa/lib/a3.txt');
+    var b = convertPath('/bbb/lib/b.dart');
+    var c = convertPath('/ccc/lib/c.dart');
 
-    provider.newFile(t, 'class T {}');
-    provider.newFile(a1, 'class A1 {}');
-    provider.newFile(a2, 'class A2 {}');
-    provider.newFile(a3, 'text');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, 'class C {}');
+    newFile(t, content: 'class T {}');
+    newFile(a1, content: 'class A1 {}');
+    newFile(a2, content: 'class A2 {}');
+    newFile(a3, content: 'text');
+    newFile(b, content: 'class B {}');
+    newFile(c, content: 'class C {}');
 
     driver.addFile(t);
     // Don't add a1.dart, a2.dart, or b.dart - they should be discovered.
@@ -1161,7 +1055,7 @@
 export 'foo.dart';
 ''');
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     List<AnalysisError> errors = result.errors;
     expect(errors, hasLength(1));
     expect(errors[0].errorCode, CompileTimeErrorCode.URI_DOES_NOT_EXIST);
@@ -1172,7 +1066,7 @@
 import 'foo.dart';
 ''');
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     List<AnalysisError> errors = result.errors;
     expect(errors, hasLength(1));
     expect(errors[0].errorCode, CompileTimeErrorCode.URI_DOES_NOT_EXIST);
@@ -1186,7 +1080,7 @@
 }
 ''', priority: true);
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     List<AnalysisError> errors = result.errors;
     expect(errors, hasLength(1));
     expect(errors[0].errorCode, CompileTimeErrorCode.URI_DOES_NOT_EXIST);
@@ -1198,19 +1092,19 @@
 part 'foo.dart';
 ''');
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     List<AnalysisError> errors = result.errors;
     expect(errors, hasLength(1));
     expect(errors[0].errorCode, CompileTimeErrorCode.URI_DOES_NOT_EXIST);
   }
 
   test_externalSummaries() async {
-    var a = _p('/a.dart');
-    var b = _p('/b.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/a.dart');
+    var b = convertPath('/b.dart');
+    newFile(a, content: r'''
 class A {}
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 import 'a.dart';
 var a = new A();
 ''');
@@ -1220,37 +1114,37 @@
         await createAnalysisDriver().test.getSummaryStore(a);
 
     // There are at least a.dart and dart:core libraries.
-    String aUri = provider.pathContext.toUri(a).toString();
+    String aUri = toUri(a).toString();
     expect(summaryStore.unlinkedMap.keys, contains(aUri));
     expect(summaryStore.linkedMap.keys, contains(aUri));
     expect(summaryStore.unlinkedMap.keys, contains('dart:core'));
     expect(summaryStore.linkedMap.keys, contains('dart:core'));
 
     // Remove a.dart from the file system.
-    provider.deleteFile(a);
+    deleteFile(a);
 
     // We don't need a.dart file when we analyze with the summary store.
     // Still no analysis errors.
     AnalysisDriver driver =
         createAnalysisDriver(externalSummaries: summaryStore);
-    AnalysisResult result = await driver.getResult(b);
+    ResolvedUnitResult result = await driver.getResult(b);
     expect(result.errors, isEmpty);
   }
 
   test_externalSummaries_partReuse() async {
-    var a = _p('/a.dart');
-    var b = _p('/b.dart');
-    var c = _p('/c.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/a.dart');
+    var b = convertPath('/b.dart');
+    var c = convertPath('/c.dart');
+    newFile(a, content: r'''
 library a;
 part 'b.dart';
 class A {}
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 part of a;
 class _B {}
 ''');
-    provider.newFile(c, r'''
+    newFile(c, content: r'''
 library a;
 import 'a.dart';
 part 'b.dart';
@@ -1262,8 +1156,8 @@
     SummaryDataStore summaryStore =
         await createAnalysisDriver().test.getSummaryStore(a);
 
-    String aUri = provider.pathContext.toUri(a).toString();
-    String bUri = provider.pathContext.toUri(b).toString();
+    String aUri = toUri(a).toString();
+    String bUri = toUri(b).toString();
     // There are unlinked units for a.dart and b.dart files.
     expect(summaryStore.hasUnlinkedUnit(aUri), isTrue);
     expect(summaryStore.hasUnlinkedUnit(bUri), isTrue);
@@ -1273,28 +1167,28 @@
 
     // Remove a.dart from the file system.
     // Keep b.dart, because we (re)use it as a part.
-    provider.deleteFile(a);
+    deleteFile(a);
 
     // We don't need a.dart file when we analyze with the summary store.
     // We can instantiate the class A the library a.dart.
     // We can instantiate the class _A the part b.dart.
     AnalysisDriver driver =
         createAnalysisDriver(externalSummaries: summaryStore);
-    AnalysisResult result = await driver.getResult(c);
+    ResolvedUnitResult result = await driver.getResult(c);
     expect(result.errors, isEmpty);
   }
 
   test_generatedFile() async {
     Uri uri = Uri.parse('package:aaa/foo.dart');
-    String templatePath = _p('/aaa/lib/foo.dart');
-    String generatedPath = _p('/generated/aaa/lib/foo.dart');
+    String templatePath = convertPath('/aaa/lib/foo.dart');
+    String generatedPath = convertPath('/generated/aaa/lib/foo.dart');
 
-    provider.newFile(templatePath, r'''
+    newFile(templatePath, content: r'''
 a() {}
 b() {}
 ''');
 
-    provider.newFile(generatedPath, r'''
+    newFile(generatedPath, content: r'''
 aaa() {}
 bbb() {}
 ''');
@@ -1338,13 +1232,13 @@
   }
 
   test_getCachedResult() async {
-    var a = _p('/test/bin/a.dart');
-    provider.newFile(a, 'var a = 1;');
+    var a = convertPath('/test/bin/a.dart');
+    newFile(a, content: 'var a = 1;');
 
     expect(driver.getCachedResult(a), isNull);
 
     driver.priorityFiles = [a];
-    AnalysisResult result = await driver.getResult(a);
+    ResolvedUnitResult result = await driver.getResult(a);
 
     expect(driver.getCachedResult(a), same(result));
   }
@@ -1367,15 +1261,15 @@
   }
 
   test_getFilesDefiningClassMemberName_class() async {
-    var a = _p('/test/bin/a.dart');
-    var b = _p('/test/bin/b.dart');
-    var c = _p('/test/bin/c.dart');
-    var d = _p('/test/bin/d.dart');
+    var a = convertPath('/test/bin/a.dart');
+    var b = convertPath('/test/bin/b.dart');
+    var c = convertPath('/test/bin/c.dart');
+    var d = convertPath('/test/bin/d.dart');
 
-    provider.newFile(a, 'class A { m1() {} }');
-    provider.newFile(b, 'class B { m2() {} }');
-    provider.newFile(c, 'class C { m2() {} }');
-    provider.newFile(d, 'class D { m3() {} }');
+    newFile(a, content: 'class A { m1() {} }');
+    newFile(b, content: 'class B { m2() {} }');
+    newFile(c, content: 'class C { m2() {} }');
+    newFile(d, content: 'class D { m3() {} }');
 
     driver.addFile(a);
     driver.addFile(b);
@@ -1393,15 +1287,15 @@
   }
 
   test_getFilesDefiningClassMemberName_mixin() async {
-    var a = _p('/test/bin/a.dart');
-    var b = _p('/test/bin/b.dart');
-    var c = _p('/test/bin/c.dart');
-    var d = _p('/test/bin/d.dart');
+    var a = convertPath('/test/bin/a.dart');
+    var b = convertPath('/test/bin/b.dart');
+    var c = convertPath('/test/bin/c.dart');
+    var d = convertPath('/test/bin/d.dart');
 
-    provider.newFile(a, 'mixin A { m1() {} }');
-    provider.newFile(b, 'mixin B { m2() {} }');
-    provider.newFile(c, 'mixin C { m2() {} }');
-    provider.newFile(d, 'mixin D { m3() {} }');
+    newFile(a, content: 'mixin A { m1() {} }');
+    newFile(b, content: 'mixin B { m2() {} }');
+    newFile(c, content: 'mixin C { m2() {} }');
+    newFile(d, content: 'mixin D { m3() {} }');
 
     driver.addFile(a);
     driver.addFile(b);
@@ -1419,17 +1313,17 @@
   }
 
   test_getFilesReferencingName() async {
-    var a = _p('/test/bin/a.dart');
-    var b = _p('/test/bin/b.dart');
-    var c = _p('/test/bin/c.dart');
-    var d = _p('/test/bin/d.dart');
-    var e = _p('/test/bin/e.dart');
+    var a = convertPath('/test/bin/a.dart');
+    var b = convertPath('/test/bin/b.dart');
+    var c = convertPath('/test/bin/c.dart');
+    var d = convertPath('/test/bin/d.dart');
+    var e = convertPath('/test/bin/e.dart');
 
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, "import 'a.dart'; A a;");
-    provider.newFile(c, "import 'a.dart'; var a = new A();");
-    provider.newFile(d, "class A{} A a;");
-    provider.newFile(e, "import 'a.dart'; main() {}");
+    newFile(a, content: 'class A {}');
+    newFile(b, content: "import 'a.dart'; A a;");
+    newFile(c, content: "import 'a.dart'; var a = new A();");
+    newFile(d, content: "class A{} A a;");
+    newFile(e, content: "import 'a.dart'; main() {}");
 
     driver.addFile(a);
     driver.addFile(b);
@@ -1450,15 +1344,15 @@
   }
 
   test_getFilesReferencingName_discover() async {
-    var t = _p('/test/lib/test.dart');
-    var a = _p('/aaa/lib/a.dart');
-    var b = _p('/bbb/lib/b.dart');
-    var c = _p('/ccc/lib/c.dart');
+    var t = convertPath('/test/lib/test.dart');
+    var a = convertPath('/aaa/lib/a.dart');
+    var b = convertPath('/bbb/lib/b.dart');
+    var c = convertPath('/ccc/lib/c.dart');
 
-    provider.newFile(t, 'int t;');
-    provider.newFile(a, 'int a;');
-    provider.newFile(b, 'int b;');
-    provider.newFile(c, 'int c;');
+    newFile(t, content: 'int t;');
+    newFile(a, content: 'int a;');
+    newFile(b, content: 'int b;');
+    newFile(c, content: 'int c;');
 
     driver.addFile(t);
 
@@ -1470,8 +1364,8 @@
   }
 
   test_getFileSync_library() async {
-    var path = _p('/test/lib/a.dart');
-    provider.newFile(path, '');
+    var path = convertPath('/test/lib/a.dart');
+    newFile(path);
     var file = driver.getFileSync(path);
     expect(file.path, path);
     expect(file.uri.toString(), 'package:test/a.dart');
@@ -1486,8 +1380,8 @@
   }
 
   test_getFileSync_part() async {
-    var path = _p('/test/lib/a.dart');
-    provider.newFile(path, 'part of lib;');
+    var path = convertPath('/test/lib/a.dart');
+    newFile(path, content: 'part of lib;');
     var file = driver.getFileSync(path);
     expect(file.path, path);
     expect(file.uri.toString(), 'package:test/a.dart');
@@ -1518,29 +1412,86 @@
     } on ArgumentError {}
   }
 
-  test_getLibraryByUri_external_resynthesize() async {
-    provider.newFile(testFile, r'''
-class Test {}
+  test_getLibraryByUri() async {
+    var a = '/test/lib/a.dart';
+    var b = '/test/lib/b.dart';
+
+    String aUriStr = 'package:test/a.dart';
+    String bUriStr = 'package:test/b.dart';
+
+    newFile(a, content: r'''
+part 'b.dart';
+
+class A {}
+''');
+
+    newFile(b, content: r'''
+part of 'a.dart';
+
+class B {}
+''');
+
+    var library = await driver.getLibraryByUri(aUriStr);
+    expect(library.getType('A'), isNotNull);
+    expect(library.getType('B'), isNotNull);
+
+    // It is an error to ask for a library when we know that it is a part.
+    expect(() async {
+      await driver.getLibraryByUri(bUriStr);
+    }, throwsArgumentError);
+  }
+
+  test_getLibraryByUri_external() async {
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+
+    String aUriStr = 'package:test/a.dart';
+    String bUriStr = 'package:test/b.dart';
+
+    newFile(a, content: r'''
+part 'b.dart';
+
+class A {}
+''');
+
+    newFile(b, content: r'''
+part of 'a.dart';
+
+class B {}
 ''');
 
     // Prepare the store with package:test/test.dart URI.
-    SummaryDataStore summaryStore =
-        await createAnalysisDriver().test.getSummaryStore(testFile);
+    var store = await createAnalysisDriver().test.getSummaryStore(a);
 
     // package:test/test.dart is in the store.
-    String uri = 'package:test/test.dart';
-    expect(summaryStore.unlinkedMap.keys, contains(uri));
-    expect(summaryStore.linkedMap.keys, contains(uri));
+    expect(store.unlinkedMap.keys, contains(aUriStr));
+    expect(store.unlinkedMap.keys, contains(bUriStr));
+    expect(store.linkedMap.keys, contains(aUriStr));
+    expect(store.linkedMap.keys, isNot(contains(bUriStr)));
 
-    // Remove the file from the file system.
-    provider.deleteFile(testFile);
+    // Remove the files from the file system.
+    deleteFile(a);
+    deleteFile(b);
 
-    // We can resynthesize the library from the store without reading the file.
-    AnalysisDriver driver =
-        createAnalysisDriver(externalSummaries: summaryStore);
-    expect(driver.test.numOfCreatedLibraryContexts, 0);
-    LibraryElement library = await driver.getLibraryByUri(uri);
-    expect(library.getType('Test'), isNotNull);
+    // We can resynthesize the library from the store.
+    var driver = createAnalysisDriver(externalSummaries: store);
+
+    // Ask by URI, so we get the "external" FileState.
+    var aUri = Uri.parse(aUriStr);
+    var aFile = driver.fsState.getFileForUri(aUri);
+    expect(aFile.uri, aUri);
+    expect(aFile.path, isNull);
+
+    // We still can resynthesize the library.
+    // The URI is known to be external, so we don't talk to the file.
+    var library = await driver.getLibraryByUri(aUriStr);
+    expect(library.getType('A'), isNotNull);
+    expect(library.getType('B'), isNotNull);
+
+    // It is an error to ask for a library when we know that it is a part.
+    expect(() async {
+      await driver.getLibraryByUri(bUriStr);
+    }, throwsArgumentError);
   }
 
   test_getLibraryByUri_sdk_analyze() async {
@@ -1551,11 +1502,9 @@
   }
 
   test_getLibraryByUri_sdk_resynthesize() async {
-    SummaryDataStore sdkStore;
-    {
-      String corePath = sdk.mapDartUri('dart:core').fullName;
-      sdkStore = await createAnalysisDriver().test.getSummaryStore(corePath);
-    }
+    String corePath = sdk.mapDartUri('dart:core').fullName;
+    String asyncPath = sdk.mapDartUri('dart:async').fullName;
+    var sdkStore = await createAnalysisDriver().test.getSummaryStore(corePath);
 
     // There are dart:core and dart:async in the store.
     expect(sdkStore.unlinkedMap.keys, contains('dart:core'));
@@ -1563,25 +1512,109 @@
     expect(sdkStore.linkedMap.keys, contains('dart:core'));
     expect(sdkStore.linkedMap.keys, contains('dart:async'));
 
-    // We don't create new library context (so, don't parse, summarize and
-    // link) for dart:core. The library is resynthesized from the provided
-    // external store.
+    // Remove dart:core and dart:async.
+    // So, the new driver below cannot parse and summarize them.
+    deleteFile(corePath);
+    deleteFile(asyncPath);
+
+    // We still get get dart:core library element.
     AnalysisDriver driver = createAnalysisDriver(externalSummaries: sdkStore);
     LibraryElement coreLibrary = await driver.getLibraryByUri('dart:core');
-    expect(driver.test.numOfCreatedLibraryContexts, 0);
     expect(coreLibrary, isNotNull);
     expect(coreLibrary.getType('Object'), isNotNull);
   }
 
-  test_getResolvedLibrary_external() async {
-    var a1 = _p('/aaa/lib/a1.dart');
-    var a2 = _p('/aaa/lib/a2.dart');
+  test_getParsedLibrary_external() async {
+    var a1 = convertPath('/aaa/lib/a1.dart');
+    var a2 = convertPath('/aaa/lib/a2.dart');
 
     var a1UriStr = 'package:aaa/a1.dart';
     var a2UriStr = 'package:aaa/a2.dart';
 
-    provider.newFile(a1, "part 'a2.dart';  class A {}");
-    provider.newFile(a2, "part of 'a1.dart';");
+    newFile(a1, content: "part 'a2.dart';  class A {}");
+    newFile(a2, content: "part of 'a1.dart';");
+
+    // Build the store with the library.
+    var store = await createAnalysisDriver().test.getSummaryStore(a1);
+    expect(store.unlinkedMap.keys, contains(a1UriStr));
+    expect(store.unlinkedMap.keys, contains(a2UriStr));
+    expect(store.linkedMap.keys, contains(a1UriStr));
+
+    var driver = createAnalysisDriver(externalSummaries: store);
+    var libraryElement = await driver.getLibraryByUri(a1UriStr);
+    var classA = libraryElement.library.getType('A');
+
+    var parsedLibrary = driver.getParsedLibrary(a1);
+    expect(parsedLibrary, isNotNull);
+    expect(parsedLibrary.state, ResultState.NOT_A_FILE);
+    expect(() {
+      parsedLibrary.getElementDeclaration(classA);
+    }, throwsStateError);
+
+    // It is an error to ask for a library when we know that it is a part.
+    expect(() {
+      driver.getParsedLibrary(a2);
+    }, throwsArgumentError);
+  }
+
+  test_getParsedLibraryByUri_external() async {
+    var a1 = convertPath('/aaa/lib/a1.dart');
+    var a2 = convertPath('/aaa/lib/a2.dart');
+
+    var a1UriStr = 'package:aaa/a1.dart';
+    var a2UriStr = 'package:aaa/a2.dart';
+
+    var a1Uri = Uri.parse(a1UriStr);
+    var a2Uri = Uri.parse(a2UriStr);
+
+    newFile(a1, content: "part 'a2.dart';  class A {}");
+    newFile(a2, content: "part of 'a1.dart';");
+
+    // Build the store with the library.
+    var store = await createAnalysisDriver().test.getSummaryStore(a1);
+    expect(store.unlinkedMap.keys, contains(a1UriStr));
+    expect(store.unlinkedMap.keys, contains(a2UriStr));
+    expect(store.linkedMap.keys, contains(a1UriStr));
+
+    var driver = createAnalysisDriver(externalSummaries: store);
+    var libraryElement = await driver.getLibraryByUri(a1UriStr);
+    var classA = libraryElement.library.getType('A');
+
+    {
+      var parsedLibrary = driver.getParsedLibraryByUri(a1Uri);
+      expect(parsedLibrary, isNotNull);
+      expect(parsedLibrary.state, ResultState.NOT_A_FILE);
+      expect(() {
+        parsedLibrary.getElementDeclaration(classA);
+      }, throwsStateError);
+    }
+
+    // We can also get the result from the session.
+    {
+      var session = driver.currentSession;
+      var parsedLibrary = session.getParsedLibraryByElement(libraryElement);
+      expect(parsedLibrary, isNotNull);
+      expect(parsedLibrary.state, ResultState.NOT_A_FILE);
+      expect(() {
+        parsedLibrary.getElementDeclaration(classA);
+      }, throwsStateError);
+    }
+
+    // It is an error to ask for a library when we know that it is a part.
+    expect(() {
+      driver.getParsedLibraryByUri(a2Uri);
+    }, throwsArgumentError);
+  }
+
+  test_getResolvedLibrary_external() async {
+    var a1 = convertPath('/aaa/lib/a1.dart');
+    var a2 = convertPath('/aaa/lib/a2.dart');
+
+    var a1UriStr = 'package:aaa/a1.dart';
+    var a2UriStr = 'package:aaa/a2.dart';
+
+    newFile(a1, content: "part 'a2.dart';  class A {}");
+    newFile(a2, content: "part of 'a1.dart';");
 
     // Build the store with the library.
     var store = await createAnalysisDriver().test.getSummaryStore(a1);
@@ -1595,7 +1628,7 @@
 
     var resolvedLibrary = await driver.getResolvedLibrary(a1);
     expect(resolvedLibrary, isNotNull);
-    expect(resolvedLibrary.state, results.ResultState.NOT_A_FILE);
+    expect(resolvedLibrary.state, ResultState.NOT_A_FILE);
     expect(() {
       resolvedLibrary.getElementDeclaration(classA);
     }, throwsStateError);
@@ -1607,8 +1640,8 @@
   }
 
   test_getResolvedLibraryByUri_external() async {
-    var a1 = _p('/aaa/lib/a1.dart');
-    var a2 = _p('/aaa/lib/a2.dart');
+    var a1 = convertPath('/aaa/lib/a1.dart');
+    var a2 = convertPath('/aaa/lib/a2.dart');
 
     var a1UriStr = 'package:aaa/a1.dart';
     var a2UriStr = 'package:aaa/a2.dart';
@@ -1616,8 +1649,8 @@
     var a1Uri = Uri.parse(a1UriStr);
     var a2Uri = Uri.parse(a2UriStr);
 
-    provider.newFile(a1, "part 'a2.dart';  class A {}");
-    provider.newFile(a2, "part of 'a1.dart';");
+    newFile(a1, content: "part 'a2.dart';  class A {}");
+    newFile(a2, content: "part of 'a1.dart';");
 
     // Build the store with the library.
     var store = await createAnalysisDriver().test.getSummaryStore(a1);
@@ -1632,7 +1665,7 @@
     {
       var resolvedLibrary = await driver.getResolvedLibraryByUri(a1Uri);
       expect(resolvedLibrary, isNotNull);
-      expect(resolvedLibrary.state, results.ResultState.NOT_A_FILE);
+      expect(resolvedLibrary.state, ResultState.NOT_A_FILE);
       expect(() {
         resolvedLibrary.getElementDeclaration(classA);
       }, throwsStateError);
@@ -1644,7 +1677,7 @@
       var resolvedLibrary =
           await session.getResolvedLibraryByElement(libraryElement);
       expect(resolvedLibrary, isNotNull);
-      expect(resolvedLibrary.state, results.ResultState.NOT_A_FILE);
+      expect(resolvedLibrary.state, ResultState.NOT_A_FILE);
       expect(() {
         resolvedLibrary.getElementDeclaration(classA);
       }, throwsStateError);
@@ -1660,10 +1693,10 @@
     String content = 'int f() => 42;';
     addTestFile(content, priority: true);
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     expect(result.path, testFile);
     expect(result.uri.toString(), 'package:test/test.dart');
-    expect(result.exists, isTrue);
+    expect(result.state, ResultState.VALID);
     expect(result.content, content);
     expect(result.unit, isNotNull);
     expect(result.errors, hasLength(0));
@@ -1678,10 +1711,10 @@
   }
 
   test_getResult_constants_defaultParameterValue_localFunction() async {
-    var a = _p('/test/bin/a.dart');
-    var b = _p('/test/bin/b.dart');
-    provider.newFile(a, 'const C = 42;');
-    provider.newFile(b, r'''
+    var a = convertPath('/test/bin/a.dart');
+    var b = convertPath('/test/bin/b.dart');
+    newFile(a, content: 'const C = 42;');
+    newFile(b, content: r'''
 import 'a.dart';
 main() {
   foo({int p: C}) {}
@@ -1692,17 +1725,17 @@
     driver.addFile(b);
     await waitForIdleWithoutExceptions();
 
-    AnalysisResult result = await driver.getResult(b);
+    ResolvedUnitResult result = await driver.getResult(b);
     expect(result.errors, isEmpty);
   }
 
   test_getResult_doesNotExist() async {
-    var a = _p('/test/lib/a.dart');
+    var a = convertPath('/test/lib/a.dart');
 
-    AnalysisResult result = await driver.getResult(a);
+    ResolvedUnitResult result = await driver.getResult(a);
     expect(result.path, a);
     expect(result.uri.toString(), 'package:test/a.dart');
-    expect(result.exists, isFalse);
+    expect(result.state, ResultState.NOT_A_FILE);
     expect(result.content, '');
   }
 
@@ -1710,7 +1743,7 @@
     String content = 'main() { int vv; }';
     addTestFile(content, priority: true);
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     expect(result.path, testFile);
     expect(result.errors, hasLength(1));
     {
@@ -1723,23 +1756,6 @@
     }
   }
 
-  test_getResult_fileContentOverlay_throughAnalysisContext() async {
-    var a = _p('/test/bin/a.dart');
-    var b = _p('/test/bin/b.dart');
-
-    provider.newFile(a, 'import "b.dart";');
-    provider.newFile(b, 'var v = 1;');
-    contentOverlay[b] = 'var v = 2;';
-
-    var result = await driver.getResult(a);
-
-    // The content that was set into the overlay for "b" should be visible
-    // through the AnalysisContext that was used to analyze "a".
-    CompilationUnitElement unitA = result.unit.declaredElement;
-    Source sourceB = unitA.library.imports[0].importedLibrary.source;
-    expect(unitA.context.getContents(sourceB).data, 'var v = 2;');
-  }
-
   test_getResult_functionTypeFormalParameter_withTypeParameter() async {
     // This was code crashing because of incomplete implementation.
     // Consider (re)moving after fixing dartbug.com/28515
@@ -1750,7 +1766,7 @@
 class B {}
 ''');
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     expect(result.path, testFile);
   }
 
@@ -1767,10 +1783,10 @@
   }
 
   test_getResult_importLibrary_thenRemoveIt() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: r'''
 import 'a.dart';
 class B extends A {}
 ''');
@@ -1781,17 +1797,17 @@
 
     // No errors in b.dart
     {
-      AnalysisResult result = await driver.getResult(b);
+      ResolvedUnitResult result = await driver.getResult(b);
       expect(result.errors, isEmpty);
     }
 
     // Remove a.dart and reanalyze.
-    provider.deleteFile(a);
+    deleteFile(a);
     driver.removeFile(a);
 
     // The unresolved URI error must be reported.
     {
-      AnalysisResult result = await driver.getResult(b);
+      ResolvedUnitResult result = await driver.getResult(b);
       expect(
           result.errors,
           contains(predicate((AnalysisError e) =>
@@ -1799,12 +1815,12 @@
     }
 
     // Restore a.dart and reanalyze.
-    provider.newFile(a, 'class A {}');
+    newFile(a, content: 'class A {}');
     driver.addFile(a);
 
     // No errors in b.dart again.
     {
-      AnalysisResult result = await driver.getResult(b);
+      ResolvedUnitResult result = await driver.getResult(b);
       expect(result.errors, isEmpty);
     }
   }
@@ -1817,7 +1833,7 @@
 ''', priority: true);
     await waitForIdleWithoutExceptions();
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     expect(_getClassFieldType(result.unit, 'C', 'f'), 'int');
   }
 
@@ -1832,7 +1848,7 @@
 ''', priority: true);
     await waitForIdleWithoutExceptions();
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     expect(_getClassMethodReturnType(result.unit, 'A', 'm'), 'int');
     expect(_getClassMethodReturnType(result.unit, 'B', 'm'), 'int');
   }
@@ -1845,7 +1861,7 @@
 class C {}
 ''', priority: true);
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     ClassDeclaration c = result.unit.declarations[1] as ClassDeclaration;
     Annotation a = c.metadata[0];
     expect(a.name.name, 'fff');
@@ -1872,7 +1888,7 @@
 ''';
     addTestFile(content);
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     expect(result.path, testFile);
   }
 
@@ -1884,7 +1900,7 @@
 ''';
     addTestFile(content, priority: true);
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     expect(result.path, testFile);
     // Has only exports for valid URIs.
     List<ExportElement> imports = resolutionMap
@@ -1904,7 +1920,7 @@
 ''';
     addTestFile(content, priority: true);
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     expect(result.path, testFile);
     // Has only imports for valid URIs.
     List<ImportElement> imports = resolutionMap
@@ -1932,23 +1948,23 @@
   }
 
   test_getResult_mix_fileAndPackageUris() async {
-    var a = _p('/test/bin/a.dart');
-    var b = _p('/test/bin/b.dart');
-    var c = _p('/test/lib/c.dart');
-    var d = _p('/test/test/d.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/bin/a.dart');
+    var b = convertPath('/test/bin/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    var d = convertPath('/test/test/d.dart');
+    newFile(a, content: r'''
 import 'package:test/c.dart';
 int x = y;
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 import '../lib/c.dart';
 int x = y;
 ''');
-    provider.newFile(c, r'''
+    newFile(c, content: r'''
 import '../test/d.dart';
 var y = z;
 ''');
-    provider.newFile(d, r'''
+    newFile(d, content: r'''
 String z = "string";
 ''');
 
@@ -1962,7 +1978,7 @@
     // package:my_pkg/c.dart's import is erroneous, causing y's reference to z
     // to be unresolved (and therefore have type dynamic).
     {
-      AnalysisResult result = await driver.getResult(a);
+      ResolvedUnitResult result = await driver.getResult(a);
       expect(result.errors, isEmpty);
     }
 
@@ -1972,7 +1988,7 @@
     // successfully imports file:///my_pkg/test/d.dart, causing y to have an
     // inferred type of String.
     {
-      AnalysisResult result = await driver.getResult(b);
+      ResolvedUnitResult result = await driver.getResult(b);
       List<AnalysisError> errors = result.errors;
       expect(errors, hasLength(1));
       expect(errors[0].errorCode, StaticTypeWarningCode.INVALID_ASSIGNMENT);
@@ -2011,10 +2027,10 @@
   }
 
   test_getResult_notDartFile() async {
-    var path = _p('/test/lib/test.txt');
-    provider.newFile(path, 'class A {}');
+    var path = convertPath('/test/lib/test.txt');
+    newFile(path, content: 'class A {}');
 
-    AnalysisResult result = await driver.getResult(path);
+    ResolvedUnitResult result = await driver.getResult(path);
     expect(result, isNotNull);
     expect(result.unit.declaredElement.types.map((e) => e.name), ['A']);
   }
@@ -2030,15 +2046,15 @@
   }
 
   test_getResult_sameFile_twoUris() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/test/c.dart');
-    provider.newFile(a, 'class A<T> {}');
-    provider.newFile(b, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/test/c.dart');
+    newFile(a, content: 'class A<T> {}');
+    newFile(b, content: r'''
 import 'a.dart';
 var VB = new A<int>();
 ''');
-    provider.newFile(c, r'''
+    newFile(c, content: r'''
 import '../lib/a.dart';
 var VC = new A<double>();
 ''');
@@ -2048,29 +2064,31 @@
     await waitForIdleWithoutExceptions();
 
     {
-      AnalysisResult result = await driver.getResult(b);
+      ResolvedUnitResult result = await driver.getResult(b);
       expect(_getImportSource(result.unit, 0).uri.toString(),
           'package:test/a.dart');
       expect(_getTopLevelVarType(result.unit, 'VB'), 'A<int>');
     }
 
     {
-      AnalysisResult result = await driver.getResult(c);
-      expect(_getImportSource(result.unit, 0).uri,
-          provider.pathContext.toUri(_p('/test/lib/a.dart')));
+      ResolvedUnitResult result = await driver.getResult(c);
+      expect(
+        _getImportSource(result.unit, 0).uri,
+        toUri(convertPath('/test/lib/a.dart')),
+      );
       expect(_getTopLevelVarType(result.unit, 'VC'), 'A<double>');
     }
   }
 
   test_getResult_selfConsistent() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    newFile(a, content: r'''
 import 'b.dart';
 var A1 = 1;
 var A2 = B1;
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 import 'a.dart';
 var B1 = A1;
 ''');
@@ -2080,7 +2098,7 @@
     await waitForIdleWithoutExceptions();
 
     {
-      AnalysisResult result = await driver.getResult(a);
+      ResolvedUnitResult result = await driver.getResult(a);
       expect(_getTopLevelVarType(result.unit, 'A1'), 'int');
       expect(_getTopLevelVarType(result.unit, 'A2'), 'int');
     }
@@ -2092,7 +2110,7 @@
     // That's because we check for "a" API signature consistency, and because
     // it has changed, we invalidated the dependency cache, relinked libraries
     // and recomputed types.
-    provider.updateFile(a, r'''
+    modifyFile(a, r'''
 import 'b.dart';
 var A1 = 1.2;
 var A2 = B1;
@@ -2100,7 +2118,7 @@
     driver.changeFile(a);
 
     {
-      AnalysisResult result = await driver.getResult(a);
+      ResolvedUnitResult result = await driver.getResult(a);
       expect(_getTopLevelVarType(result.unit, 'A1'), 'double');
       expect(_getTopLevelVarType(result.unit, 'A2'), 'double');
     }
@@ -2109,10 +2127,10 @@
   test_getResult_thenRemove() async {
     addTestFile('main() {}', priority: true);
 
-    Future<AnalysisResult> resultFuture = driver.getResult(testFile);
+    Future<ResolvedUnitResult> resultFuture = driver.getResult(testFile);
     driver.removeFile(testFile);
 
-    AnalysisResult result = await resultFuture;
+    ResolvedUnitResult result = await resultFuture;
     expect(result, isNotNull);
     expect(result.path, testFile);
     expect(result.unit, isNotNull);
@@ -2122,20 +2140,20 @@
     String content = 'main() {}';
     addTestFile(content, priority: true);
 
-    Future<AnalysisResult> future1 = driver.getResult(testFile);
-    Future<AnalysisResult> future2 = driver.getResult(testFile);
+    Future<ResolvedUnitResult> future1 = driver.getResult(testFile);
+    Future<ResolvedUnitResult> future2 = driver.getResult(testFile);
 
     // Both futures complete, with the same result.
-    AnalysisResult result1 = await future1;
-    AnalysisResult result2 = await future2;
+    ResolvedUnitResult result1 = await future1;
+    ResolvedUnitResult result2 = await future2;
     expect(result2, same(result1));
     expect(result1.path, testFile);
     expect(result1.unit, isNotNull);
   }
 
   test_getSourceKind_library() async {
-    var path = _p('/test/lib/test.dart');
-    provider.newFile(path, 'class A {}');
+    var path = convertPath('/test/lib/test.dart');
+    newFile(path, content: 'class A {}');
     expect(await driver.getSourceKind(path), SourceKind.LIBRARY);
   }
 
@@ -2147,27 +2165,27 @@
   }
 
   test_getSourceKind_notDartFile() async {
-    var path = _p('/test/lib/test.txt');
-    provider.newFile(path, 'class A {}');
+    var path = convertPath('/test/lib/test.txt');
+    newFile(path, content: 'class A {}');
     expect(await driver.getSourceKind(path), isNull);
   }
 
   test_getSourceKind_part() async {
-    var path = _p('/test/lib/test.dart');
-    provider.newFile(path, 'part of lib; class A {}');
+    var path = convertPath('/test/lib/test.dart');
+    newFile(path, content: 'part of lib; class A {}');
     expect(await driver.getSourceKind(path), SourceKind.PART);
   }
 
   test_getTopLevelNameDeclarations() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    var d = _p('/test/lib/d.dart');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    var d = convertPath('/test/lib/d.dart');
 
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'export "a.dart"; class B {}');
-    provider.newFile(c, 'import "d.dart"; class C {}');
-    provider.newFile(d, 'class D {}');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'export "a.dart"; class B {}');
+    newFile(c, content: 'import "d.dart"; class C {}');
+    newFile(d, content: 'class D {}');
 
     driver.addFile(a);
     driver.addFile(b);
@@ -2191,17 +2209,17 @@
   }
 
   test_getTopLevelNameDeclarations_discover() async {
-    var t = _p('/test/lib/test.dart');
-    var a1 = _p('/aaa/lib/a1.dart');
-    var a2 = _p('/aaa/lib/src/a2.dart');
-    var b = _p('/bbb/lib/b.dart');
-    var c = _p('/ccc/lib/c.dart');
+    var t = convertPath('/test/lib/test.dart');
+    var a1 = convertPath('/aaa/lib/a1.dart');
+    var a2 = convertPath('/aaa/lib/src/a2.dart');
+    var b = convertPath('/bbb/lib/b.dart');
+    var c = convertPath('/ccc/lib/c.dart');
 
-    provider.newFile(t, 'class T {}');
-    provider.newFile(a1, 'class A1 {}');
-    provider.newFile(a2, 'class A2 {}');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, 'class C {}');
+    newFile(t, content: 'class T {}');
+    newFile(a1, content: 'class A1 {}');
+    newFile(a2, content: 'class A2 {}');
+    newFile(b, content: 'class B {}');
+    newFile(c, content: 'class C {}');
 
     driver.addFile(t);
     // Don't add a1.dart, a2.dart, or b.dart - they should be discovered.
@@ -2224,18 +2242,18 @@
   }
 
   test_getTopLevelNameDeclarations_parts() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
 
-    provider.newFile(a, r'''
+    newFile(a, content: r'''
 library lib;
 part 'b.dart';
 part 'c.dart';
 class A {}
 ''');
-    provider.newFile(b, 'part of lib; class B {}');
-    provider.newFile(c, 'part of lib; class C {}');
+    newFile(b, content: 'part of lib; class B {}');
+    newFile(c, content: 'part of lib; class C {}');
 
     driver.addFile(a);
     driver.addFile(b);
@@ -2279,17 +2297,17 @@
   }
 
   test_getUnitElement_notDart() async {
-    var path = _p('/test.txt');
-    provider.newFile(path, 'class A {}');
+    var path = convertPath('/test.txt');
+    newFile(path, content: 'class A {}');
     UnitElementResult unitResult = await driver.getUnitElement(path);
     expect(unitResult, isNotNull);
     expect(unitResult.element.types.map((e) => e.name), ['A']);
   }
 
   test_getUnitElementSignature() async {
-    var a = _p('/test/lib/a.dart');
+    var a = convertPath('/test/lib/a.dart');
 
-    provider.newFile(a, 'foo() {}');
+    newFile(a, content: 'foo() {}');
 
     String signature = await driver.getUnitElementSignature(a);
     expect(signature, isNotNull);
@@ -2298,7 +2316,7 @@
     expect(unitResult.path, a);
     expect(unitResult.signature, signature);
 
-    provider.updateFile(a, 'bar() {}');
+    modifyFile(a, 'bar() {}');
     driver.changeFile(a);
 
     String signature2 = await driver.getUnitElementSignature(a);
@@ -2307,11 +2325,19 @@
   }
 
   test_hasFilesToAnalyze() async {
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+
     // No files yet, nothing to analyze.
     expect(driver.hasFilesToAnalyze, isFalse);
 
     // Add a new file, it should be analyzed.
-    addTestFile('main() {}', priority: false);
+    newFile(a, content: r'''
+import 'b.dart';
+main() {}
+''');
+    driver.addFile(a);
     expect(driver.hasFilesToAnalyze, isTrue);
 
     // Wait for idle, nothing to do.
@@ -2319,36 +2345,42 @@
     expect(driver.hasFilesToAnalyze, isFalse);
 
     // Ask to analyze the file, so there is a file to analyze.
-    Future<AnalysisResult> future = driver.getResult(testFile);
+    Future<ResolvedUnitResult> future = driver.getResult(a);
     expect(driver.hasFilesToAnalyze, isTrue);
 
     // Once analysis is done, there is nothing to analyze.
     await future;
     expect(driver.hasFilesToAnalyze, isFalse);
 
-    // Change a file, even if not added, it still might affect analysis.
-    driver.changeFile(_p('/not/added.dart'));
+    // Change a file that is not added, but referenced, so known.
+    driver.changeFile(b);
     expect(driver.hasFilesToAnalyze, isTrue);
     await waitForIdleWithoutExceptions();
     expect(driver.hasFilesToAnalyze, isFalse);
 
+    // Change a file that is not known - neither added, nor referenced.
+    driver.changeFile(c);
+    expect(driver.hasFilesToAnalyze, isFalse);
+    await waitForIdleWithoutExceptions();
+    expect(driver.hasFilesToAnalyze, isFalse);
+
     // Request of referenced names is not analysis of a file.
     driver.getFilesReferencingName('X');
     expect(driver.hasFilesToAnalyze, isFalse);
   }
 
   test_hermetic_modifyLibraryFile_resolvePart() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
 
-    provider.newFile(a, r'''
+    newFile(a, content: r'''
 library a;
 part 'b.dart';
 class C {
   int foo;
 }
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 part of a;
 var c = new C();
 ''');
@@ -2360,7 +2392,7 @@
 
     // Modify the library, but don't notify the driver.
     // The driver should use the previous library content and elements.
-    provider.newFile(a, r'''
+    newFile(a, content: r'''
 library a;
 part 'b.dart';
 class C {
@@ -2377,8 +2409,8 @@
   }
 
   test_hermetic_overlayOnly_part() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
     contentOverlay[a] = r'''
 library a;
 part 'b.dart';
@@ -2390,14 +2422,14 @@
     driver.addFile(a);
     driver.addFile(b);
 
-    AnalysisResult result = await driver.getResult(a);
+    ResolvedUnitResult result = await driver.getResult(a);
     expect(result.errors, isEmpty);
     expect(_getTopLevelVarType(result.unit, 'b'), 'B');
   }
 
   test_instantiateToBounds_invalid() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    newFile(a, content: r'''
 class A<T extends B> {}
 class B<T extends A<B>> {}
 ''');
@@ -2407,30 +2439,31 @@
   }
 
   test_isLibraryByUri() async {
-    var a1 = _p('/aaa/lib/a1.dart');
-    var a2 = _p('/aaa/lib/a2.dart');
-    var b1 = _p('/bbb/lib/b1.dart');
-    var b2 = _p('/bbb/lib/b2.dart');
+    var a1 = '/aaa/lib/a1.dart';
+    var a2 = '/aaa/lib/a2.dart';
+    var b1 = '/bbb/lib/b1.dart';
+    var b2 = '/bbb/lib/b2.dart';
 
     String a1UriStr = 'package:aaa/a1.dart';
     String a2UriStr = 'package:aaa/a2.dart';
     String b1UriStr = 'package:bbb/b1.dart';
     String b2UriStr = 'package:bbb/b2.dart';
 
-    provider.newFile(a1, "part 'a2.dart';");
-    provider.newFile(a2, "part of 'a1.dart';");
-    provider.newFile(b1, "part 'b2.dart';");
-    provider.newFile(b2, "part of 'b1.dart';");
+    newFile(a1, content: "part 'a2.dart';");
+    newFile(a2, content: "part of 'a1.dart';");
+    newFile(b1, content: "part 'b2.dart';");
+    newFile(b2, content: "part of 'b1.dart';");
 
     // Build the store with the library.
-    var store = await createAnalysisDriver().test.getSummaryStore(a1);
+    var store =
+        await createAnalysisDriver().test.getSummaryStore(convertPath(a1));
     expect(store.unlinkedMap.keys, contains(a1UriStr));
     expect(store.unlinkedMap.keys, contains(a2UriStr));
     expect(store.linkedMap.keys, contains(a1UriStr));
 
     // Remove the stored files from the file system.
-    provider.deleteFile(a1);
-    provider.deleteFile(a2);
+    deleteFile(a1);
+    deleteFile(a2);
 
     // We can ask isLibraryByUri() for both external and local units.
     AnalysisDriver driver = createAnalysisDriver(externalSummaries: store);
@@ -2451,8 +2484,8 @@
   }
 
   test_issue34619() async {
-    var a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    newFile(a, content: r'''
 class C {
   final Set<String> f = new Set<String>();
 
@@ -2465,7 +2498,7 @@
     await waitForIdleWithoutExceptions();
 
     // Update the file in a
-    provider.updateFile(a, r'''
+    modifyFile(a, r'''
 class C {
   final Set<String> f = a + b + c;
 
@@ -2478,15 +2511,15 @@
   }
 
   test_knownFiles() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
 
-    provider.newFile(a, r'''
+    newFile(a, content: r'''
 import 'b.dart';
 ''');
-    provider.newFile(b, '');
-    provider.newFile(c, '');
+    newFile(b);
+    newFile(c);
 
     driver.addFile(a);
     driver.addFile(c);
@@ -2506,10 +2539,10 @@
   }
 
   test_knownFiles_beforeAnalysis() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
 
-    provider.newFile(a, '');
+    newFile(a);
 
     // 'a.dart' is added, but not processed yet.
     // So, the set of known files is empty yet.
@@ -2526,7 +2559,7 @@
 
   test_missingDartLibrary_async() async {
     var asyncPath = sdk.mapDartUri('dart:async').fullName;
-    provider.getFile(asyncPath).delete();
+    getFile(asyncPath).delete();
     addTestFile('class C {}');
 
     ErrorsResult result = await driver.getErrors(testFile);
@@ -2538,7 +2571,7 @@
 
   test_missingDartLibrary_core() async {
     var corePath = sdk.mapDartUri('dart:core').fullName;
-    provider.getFile(corePath).delete();
+    getFile(corePath).delete();
     addTestFile('class C {}');
 
     ErrorsResult result = await driver.getErrors(testFile);
@@ -2556,27 +2589,27 @@
   }
 
   test_parseFile_notDart() async {
-    var p = _p('/test/bin/a.txt');
-    provider.newFile(p, 'class A {}');
+    var p = convertPath('/test/bin/a.txt');
+    newFile(p, content: 'class A {}');
 
-    ParseResult parseResult = await driver.parseFile(p);
+    ParsedUnitResult parseResult = await driver.parseFile(p);
     expect(parseResult, isNotNull);
     expect(driver.knownFiles, contains(p));
   }
 
   test_parseFile_shouldRefresh() async {
-    var p = _p('/test/bin/a.dart');
+    var p = convertPath('/test/bin/a.dart');
 
-    provider.newFile(p, 'class A {}');
+    newFile(p, content: 'class A {}');
     driver.addFile(p);
 
     // Get the result, so force the file reading.
     await driver.getResult(p);
 
     // Update the file.
-    provider.newFile(p, 'class A2 {}');
+    newFile(p, content: 'class A2 {}');
 
-    ParseResult parseResult = await driver.parseFile(p);
+    ParsedUnitResult parseResult = await driver.parseFile(p);
     var clazz = parseResult.unit.declarations[0] as ClassDeclaration;
     expect(clazz.name.name, 'A2');
   }
@@ -2589,44 +2622,44 @@
   }
 
   test_parseFileSync_notDart() {
-    var p = _p('/test/bin/a.txt');
-    provider.newFile(p, 'class A {}');
+    var p = convertPath('/test/bin/a.txt');
+    newFile(p, content: 'class A {}');
 
-    ParseResult parseResult = driver.parseFileSync(p);
+    ParsedUnitResult parseResult = driver.parseFileSync(p);
     expect(parseResult, isNotNull);
     expect(driver.knownFiles, contains(p));
   }
 
   test_parseFileSync_shouldRefresh() async {
-    var p = _p('/test/bin/a.dart');
+    var p = convertPath('/test/bin/a.dart');
 
-    provider.newFile(p, 'class A {}');
+    newFile(p, content: 'class A {}');
     driver.addFile(p);
 
     // Get the result, so force the file reading.
     await driver.getResult(p);
 
     // Update the file.
-    provider.newFile(p, 'class A2 {}');
+    newFile(p, content: 'class A2 {}');
 
-    ParseResult parseResult = driver.parseFileSync(p);
+    ParsedUnitResult parseResult = driver.parseFileSync(p);
     var clazz = parseResult.unit.declarations[0] as ClassDeclaration;
     expect(clazz.name.name, 'A2');
   }
 
   test_part_getErrors_afterLibrary() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    newFile(a, content: r'''
 library a;
 import 'b.dart';
 part 'c.dart';
 class A {}
 var c = new C();
 ''');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, r'''
+    newFile(b, content: 'class B {}');
+    newFile(c, content: r'''
 part of a;
 class C {}
 var a = new A();
@@ -2651,18 +2684,18 @@
   }
 
   test_part_getErrors_beforeLibrary() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    newFile(a, content: r'''
 library a;
 import 'b.dart';
 part 'c.dart';
 class A {}
 var c = new C();
 ''');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, r'''
+    newFile(b, content: 'class B {}');
+    newFile(c, content: r'''
 part of a;
 class C {}
 var a = new A();
@@ -2681,18 +2714,18 @@
   }
 
   test_part_getResult_afterLibrary() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    newFile(a, content: r'''
 library a;
 import 'b.dart';
 part 'c.dart';
 class A {}
 var c = new C();
 ''');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, r'''
+    newFile(b, content: 'class B {}');
+    newFile(c, content: r'''
 part of a;
 class C {}
 var a = new A();
@@ -2705,14 +2738,14 @@
 
     // Process a.dart so that we know that it's a library for c.dart later.
     {
-      AnalysisResult result = await driver.getResult(a);
+      ResolvedUnitResult result = await driver.getResult(a);
       expect(result.errors, isEmpty);
       expect(_getTopLevelVarType(result.unit, 'c'), 'C');
     }
 
     // Now c.dart can be resolved without errors in the context of a.dart
     {
-      AnalysisResult result = await driver.getResult(c);
+      ResolvedUnitResult result = await driver.getResult(c);
       expect(result.errors, isEmpty);
       expect(_getTopLevelVarType(result.unit, 'a'), 'A');
       expect(_getTopLevelVarType(result.unit, 'b'), 'B');
@@ -2720,18 +2753,18 @@
   }
 
   test_part_getResult_beforeLibrary() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    newFile(a, content: r'''
 library a;
 import 'b.dart';
 part 'c.dart';
 class A {}
 var c = new C();
 ''');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, r'''
+    newFile(b, content: 'class B {}');
+    newFile(c, content: r'''
 part of a;
 class C {}
 var a = new A();
@@ -2744,15 +2777,15 @@
 
     // b.dart will be analyzed after a.dart is analyzed.
     // So, A and B references are resolved.
-    AnalysisResult result = await driver.getResult(c);
+    ResolvedUnitResult result = await driver.getResult(c);
     expect(result.errors, isEmpty);
     expect(_getTopLevelVarType(result.unit, 'a'), 'A');
     expect(_getTopLevelVarType(result.unit, 'b'), 'B');
   }
 
   test_part_getResult_noLibrary() async {
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(c, r'''
+    var c = convertPath('/test/lib/c.dart');
+    newFile(c, content: r'''
 part of a;
 class C {}
 var a = new A();
@@ -2763,24 +2796,24 @@
 
     // There is no library which c.dart is a part of, so it has unresolved
     // A and B references.
-    AnalysisResult result = await driver.getResult(c);
+    ResolvedUnitResult result = await driver.getResult(c);
     expect(result.errors, isNotEmpty);
     expect(result.unit, isNotNull);
   }
 
   test_part_getUnitElement_afterLibrary() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    newFile(a, content: r'''
 library a;
 import 'b.dart';
 part 'c.dart';
 class A {}
 var c = new C();
 ''');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, r'''
+    newFile(b, content: 'class B {}');
+    newFile(c, content: r'''
 part of a;
 class C {}
 var a = new A();
@@ -2808,18 +2841,18 @@
   }
 
   test_part_getUnitElement_beforeLibrary() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    newFile(a, content: r'''
 library a;
 import 'b.dart';
 part 'c.dart';
 class A {}
 var c = new C();
 ''');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, r'''
+    newFile(b, content: 'class B {}');
+    newFile(c, content: r'''
 part of a;
 class C {}
 var a = new A();
@@ -2844,8 +2877,8 @@
   }
 
   test_part_getUnitElement_noLibrary() async {
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(c, r'''
+    var c = convertPath('/test/lib/c.dart');
+    newFile(c, content: r'''
 part of a;
 var a = new A();
 var b = new B();
@@ -2868,18 +2901,18 @@
   }
 
   test_part_getUnitElementSignature() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    newFile(a, content: r'''
 library a;
 import 'b.dart';
 part 'c.dart';
 class A {}
 var c = new C();
 ''');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, r'''
+    newFile(b, content: 'class B {}');
+    newFile(c, content: r'''
 part of a;
 class C {}
 var a = new A();
@@ -2902,18 +2935,18 @@
   }
 
   test_part_results_afterLibrary() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    newFile(a, content: r'''
 library a;
 import 'b.dart';
 part 'c.dart';
 class A {}
 var c = new C();
 ''');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, r'''
+    newFile(b, content: 'class B {}');
+    newFile(c, content: r'''
 part of a;
 class C {}
 var a = new A();
@@ -2930,38 +2963,38 @@
 
       // c.dart was added after a.dart, so it is analyzed after a.dart,
       // so we know that a.dart is the library of c.dart, so no errors.
-      AnalysisResult result = allResults.lastWhere((r) => r.path == c);
+      ResolvedUnitResult result = allResults.lastWhere((r) => r.path == c);
       expect(result.errors, isEmpty);
       expect(result.unit, isNull);
     }
 
     // Update a.dart so that c.dart is not a part.
     {
-      provider.updateFile(a, '// does not use c.dart anymore');
+      modifyFile(a, '// does not use c.dart anymore');
       driver.changeFile(a);
       await waitForIdleWithoutExceptions();
 
       // Now c.dart does not have a library context, so A and B cannot be
       // resolved, so there are errors.
-      AnalysisResult result = allResults.lastWhere((r) => r.path == c);
+      ResolvedUnitResult result = allResults.lastWhere((r) => r.path == c);
       expect(result.errors, isNotEmpty);
       expect(result.unit, isNull);
     }
   }
 
   test_part_results_beforeLibrary() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    newFile(a, content: r'''
 library a;
 import 'b.dart';
 part 'c.dart';
 class A {}
 var c = new C();
 ''');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, r'''
+    newFile(b, content: 'class B {}');
+    newFile(c, content: r'''
 part of a;
 class C {}
 var a = new A();
@@ -2979,14 +3012,14 @@
     // a.dart, but we cannot find the library for it, so we delay analysis
     // until all other files are analyzed, including a.dart, after which we
     // analyze the delayed parts.
-    AnalysisResult result = allResults.lastWhere((r) => r.path == c);
+    ResolvedUnitResult result = allResults.lastWhere((r) => r.path == c);
     expect(result.errors, isEmpty);
     expect(result.unit, isNull);
   }
 
   test_part_results_noLibrary() async {
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(c, r'''
+    var c = convertPath('/test/lib/c.dart');
+    newFile(c, content: r'''
 part of a;
 class C {}
 var a = new A();
@@ -2999,24 +3032,24 @@
 
     // There is no library which c.dart is a part of, so it has unresolved
     // A and B references.
-    AnalysisResult result = allResults.lastWhere((r) => r.path == c);
+    ResolvedUnitResult result = allResults.lastWhere((r) => r.path == c);
     expect(result.errors, isNotEmpty);
     expect(result.unit, isNull);
   }
 
   test_part_results_priority_beforeLibrary() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    newFile(a, content: r'''
 library a;
 import 'b.dart';
 part 'c.dart';
 class A {}
 var c = new C();
 ''');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, r'''
+    newFile(b, content: 'class B {}');
+    newFile(c, content: r'''
 part of a;
 class C {}
 var a = new A();
@@ -3035,19 +3068,19 @@
     // a.dart, but we cannot find the library for it, so we delay analysis
     // until all other files are analyzed, including a.dart, after which we
     // analyze the delayed parts.
-    AnalysisResult result = allResults.lastWhere((r) => r.path == c);
+    ResolvedUnitResult result = allResults.lastWhere((r) => r.path == c);
     expect(result.errors, isEmpty);
     expect(result.unit, isNotNull);
   }
 
   test_removeFile_changeFile_implicitlyAnalyzed() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    newFile(a, content: r'''
 import 'b.dart';
 var A = B;
 ''');
-    provider.newFile(b, 'var B = 1;');
+    newFile(b, content: 'var B = 1;');
 
     driver.priorityFiles = [a, b];
     driver.addFile(a);
@@ -3057,17 +3090,17 @@
     await waitForIdleWithoutExceptions();
     expect(allResults, hasLength(2));
     {
-      AnalysisResult ar = allResults.firstWhere((r) => r.path == a);
+      ResolvedUnitResult ar = allResults.firstWhere((r) => r.path == a);
       expect(_getTopLevelVarType(ar.unit, 'A'), 'int');
     }
     {
-      AnalysisResult br = allResults.firstWhere((r) => r.path == b);
+      ResolvedUnitResult br = allResults.firstWhere((r) => r.path == b);
       expect(_getTopLevelVarType(br.unit, 'B'), 'int');
     }
     allResults.clear();
 
     // Remove "b" and send the change notification.
-    provider.updateFile(b, 'var B = 1.2;');
+    modifyFile(b, 'var B = 1.2;');
     driver.removeFile(b);
     driver.changeFile(b);
 
@@ -3077,7 +3110,7 @@
     await waitForIdleWithoutExceptions();
     expect(allResults, hasLength(1));
     {
-      AnalysisResult ar = allResults.firstWhere((r) => r.path == a);
+      ResolvedUnitResult ar = allResults.firstWhere((r) => r.path == a);
       expect(_getTopLevelVarType(ar.unit, 'A'), 'double');
     }
   }
@@ -3102,11 +3135,11 @@
   }
 
   test_removeFile_invalidate_importers() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
 
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, "import 'a.dart';  var a = new A();");
+    newFile(a, content: 'class A {}');
+    newFile(b, content: "import 'a.dart';  var a = new A();");
 
     driver.addFile(a);
     driver.addFile(b);
@@ -3117,7 +3150,7 @@
     allResults.clear();
 
     // Remove a.dart, now b.dart should be reanalyzed and has an error.
-    provider.deleteFile(a);
+    deleteFile(a);
     driver.removeFile(a);
     await waitForIdleWithoutExceptions();
     expect(allResults.singleWhere((r) => r.path == b).errors, hasLength(2));
@@ -3132,26 +3165,26 @@
   }
 
   test_results_order() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    var d = _p('/test/lib/d.dart');
-    var e = _p('/test/lib/e.dart');
-    var f = _p('/test/lib/f.dart');
-    provider.newFile(a, r'''
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    var d = convertPath('/test/lib/d.dart');
+    var e = convertPath('/test/lib/e.dart');
+    var f = convertPath('/test/lib/f.dart');
+    newFile(a, content: r'''
 import 'd.dart';
 ''');
-    provider.newFile(b, '');
-    provider.newFile(c, r'''
+    newFile(b);
+    newFile(c, content: r'''
 import 'd.dart';
 ''');
-    provider.newFile(d, r'''
+    newFile(d, content: r'''
 import 'b.dart';
 ''');
-    provider.newFile(e, r'''
+    newFile(e, content: r'''
 export 'b.dart';
 ''');
-    provider.newFile(f, r'''
+    newFile(f, content: r'''
 import 'e.dart';
 class F extends X {}
 ''');
@@ -3171,7 +3204,7 @@
     allResults.clear();
 
     // Update a.dart with changing its API signature.
-    provider.updateFile(b, 'class A {}');
+    modifyFile(b, 'class A {}');
     driver.changeFile(b);
     await waitForIdleWithoutExceptions();
 
@@ -3188,16 +3221,16 @@
   }
 
   test_results_order_allChangedFirst_thenImports() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    var d = _p('/test/lib/d.dart');
-    var e = _p('/test/lib/e.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, '');
-    provider.newFile(d, "import 'a.dart';");
-    provider.newFile(e, "import 'b.dart';");
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    var d = convertPath('/test/lib/d.dart');
+    var e = convertPath('/test/lib/e.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'class B {}');
+    newFile(c);
+    newFile(d, content: "import 'a.dart';");
+    newFile(e, content: "import 'b.dart';");
 
     driver.addFile(a);
     driver.addFile(b);
@@ -3211,8 +3244,8 @@
     // Change b.dart and then a.dart files.
     // So, a.dart and b.dart should be analyzed first.
     // Then d.dart and e.dart because they import a.dart and b.dart files.
-    provider.updateFile(a, 'class A2 {}');
-    provider.updateFile(b, 'class B2 {}');
+    modifyFile(a, 'class A2 {}');
+    modifyFile(b, 'class B2 {}');
     driver.changeFile(b);
     driver.changeFile(a);
     await waitForIdleWithoutExceptions();
@@ -3235,7 +3268,7 @@
     await waitForIdleWithoutExceptions();
 
     expect(allResults, hasLength(1));
-    AnalysisResult result = allResults.single;
+    ResolvedUnitResult result = allResults.single;
     expect(result.path, testFile);
     expect(result.uri.toString(), 'package:test/test.dart');
     expect(result.content, content);
@@ -3248,12 +3281,12 @@
   }
 
   test_results_priorityFirst() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    var c = _p('/test/lib/c.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, 'class C {}');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    var c = convertPath('/test/lib/c.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'class B {}');
+    newFile(c, content: 'class C {}');
 
     driver.addFile(a);
     driver.addFile(b);
@@ -3262,7 +3295,7 @@
     await waitForIdleWithoutExceptions();
 
     expect(allResults, hasLength(3));
-    AnalysisResult result = allResults[0];
+    ResolvedUnitResult result = allResults[0];
     expect(result.path, b);
     expect(result.unit, isNotNull);
     expect(result.errors, hasLength(0));
@@ -3274,7 +3307,7 @@
     await waitForIdleWithoutExceptions();
 
     expect(allResults, hasLength(1));
-    AnalysisResult result = allResults.single;
+    ResolvedUnitResult result = allResults.single;
     expect(result.path, testFile);
     expect(result.uri.toString(), 'package:test/test.dart');
     expect(result.content, isNull);
@@ -3283,10 +3316,10 @@
   }
 
   test_results_skipNotAffected() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'class B {}');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'class B {}');
 
     driver.addFile(a);
     driver.addFile(b);
@@ -3296,7 +3329,7 @@
     allResults.clear();
 
     // Update a.dart and notify.
-    provider.updateFile(a, 'class A2 {}');
+    modifyFile(a, 'class A2 {}');
     driver.changeFile(a);
 
     // Only result for a.dart should be produced, b.dart is not affected.
@@ -3451,11 +3484,6 @@
         .type
         .toString();
   }
-
-  /**
-   * Return the [provider] specific path for the given Posix [path].
-   */
-  String _p(String path) => provider.convertPath(path);
 }
 
 @reflectiveTest
@@ -3463,31 +3491,31 @@
   bool get disableChangesAndCacheAllResults => true;
 
   test_addFile() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
     driver.addFile(a);
     driver.addFile(b);
   }
 
   test_changeFile() async {
-    var path = _p('/test.dart');
+    var path = convertPath('/test.dart');
     expect(() {
       driver.changeFile(path);
     }, throwsStateError);
   }
 
   test_getResult_libraryUnits() async {
-    var lib = _p('/lib.dart');
-    var part1 = _p('/part1.dart');
-    var part2 = _p('/part2.dart');
+    var lib = convertPath('/lib.dart');
+    var part1 = convertPath('/part1.dart');
+    var part2 = convertPath('/part2.dart');
 
-    provider.newFile(lib, r'''
+    newFile(lib, content: r'''
 library test;
 part 'part1.dart';
 part 'part2.dart';
 ''');
-    provider.newFile(part1, 'part of test; class A {}');
-    provider.newFile(part2, 'part of test; class B {}');
+    newFile(part1, content: 'part of test; class A {}');
+    newFile(part2, content: 'part of test; class B {}');
 
     driver.addFile(lib);
     driver.addFile(part1);
@@ -3496,9 +3524,9 @@
     // No analyzed libraries initially.
     expect(driver.test.numOfAnalyzedLibraries, 0);
 
-    AnalysisResult libResult = await driver.getResult(lib);
-    AnalysisResult partResult1 = await driver.getResult(part1);
-    AnalysisResult partResult2 = await driver.getResult(part2);
+    ResolvedUnitResult libResult = await driver.getResult(lib);
+    ResolvedUnitResult partResult1 = await driver.getResult(part1);
+    ResolvedUnitResult partResult2 = await driver.getResult(part2);
 
     // Just one library was analyzed, results for parts are cached.
     expect(driver.test.numOfAnalyzedLibraries, 1);
@@ -3520,11 +3548,11 @@
   }
 
   test_getResult_singleFile() async {
-    var path = _p('/test.dart');
-    provider.newFile(path, 'main() {}');
+    var path = convertPath('/test.dart');
+    newFile(path, content: 'main() {}');
     driver.addFile(path);
 
-    AnalysisResult result1 = await driver.getResult(path);
+    ResolvedUnitResult result1 = await driver.getResult(path);
     expect(driver.test.numOfAnalyzedLibraries, 1);
     var unit1 = result1.unit;
     var unitElement1 = unit1.declaredElement;
@@ -3532,7 +3560,7 @@
     expect(unit1, isNotNull);
     expect(unitElement1, isNotNull);
 
-    AnalysisResult result2 = await driver.getResult(path);
+    ResolvedUnitResult result2 = await driver.getResult(path);
     expect(driver.test.numOfAnalyzedLibraries, 1);
     expect(result2.path, path);
     expect(result2.unit, same(unit1));
@@ -3540,13 +3568,11 @@
   }
 
   test_removeFile() async {
-    var path = _p('/test.dart');
+    var path = convertPath('/test.dart');
     expect(() {
       driver.removeFile(path);
     }, throwsStateError);
   }
-
-  String _p(String path) => provider.convertPath(path);
 }
 
 class _SourceMock implements Source {
diff --git a/pkg/analyzer/test/src/dart/analysis/file_state_test.dart b/pkg/analyzer/test/src/dart/analysis/file_state_test.dart
index aeb0e75..119f2b3 100644
--- a/pkg/analyzer/test/src/dart/analysis/file_state_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/file_state_test.dart
@@ -6,9 +6,9 @@
 import 'dart:typed_data';
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
+import 'package:analyzer/src/dart/analysis/library_graph.dart';
 import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:analyzer/src/dart/analysis/top_level_declaration.dart';
 import 'package:analyzer/src/file_system/file_system.dart';
@@ -16,13 +16,13 @@
     show AnalysisOptions, AnalysisOptionsImpl;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:convert/convert.dart';
 import 'package:crypto/crypto.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../../context/mock_sdk.dart';
-
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(FileSystemStateTest);
@@ -30,8 +30,7 @@
 }
 
 @reflectiveTest
-class FileSystemStateTest {
-  final MemoryResourceProvider provider = new MemoryResourceProvider();
+class FileSystemStateTest with ResourceProviderMixin {
   MockSdk sdk;
 
   final ByteStore byteStore = new MemoryByteStore();
@@ -47,22 +46,22 @@
 
   void setUp() {
     logger = new PerformanceLog(logBuffer);
-    sdk = new MockSdk(resourceProvider: provider);
+    sdk = new MockSdk(resourceProvider: resourceProvider);
     sourceFactory = new SourceFactory([
       new DartUriResolver(sdk),
       generatedUriResolver,
-      new PackageMapUriResolver(provider, <String, List<Folder>>{
-        'aaa': [provider.getFolder(_p('/aaa/lib'))],
-        'bbb': [provider.getFolder(_p('/bbb/lib'))],
+      new PackageMapUriResolver(resourceProvider, <String, List<Folder>>{
+        'aaa': [getFolder('/aaa/lib')],
+        'bbb': [getFolder('/bbb/lib')],
       }),
-      new ResourceUriResolver(provider)
-    ], null, provider);
+      new ResourceUriResolver(resourceProvider)
+    ], null, resourceProvider);
     AnalysisOptions analysisOptions = new AnalysisOptionsImpl();
     fileSystemState = new FileSystemState(
         logger,
         byteStore,
         contentOverlay,
-        provider,
+        resourceProvider,
         sourceFactory,
         analysisOptions,
         new Uint32List(0),
@@ -70,8 +69,8 @@
   }
 
   test_definedClassMemberNames() {
-    String path = _p('/aaa/lib/a.dart');
-    provider.newFile(path, r'''
+    String path = convertPath('/aaa/lib/a.dart');
+    newFile(path, content: r'''
 class A {
   int a, b;
   A();
@@ -90,8 +89,8 @@
   }
 
   test_definedTopLevelNames() {
-    String path = _p('/aaa/lib/a.dart');
-    provider.newFile(path, r'''
+    String path = convertPath('/aaa/lib/a.dart');
+    newFile(path, content: r'''
 class A {}
 class B = Object with A;
 typedef C();
@@ -106,18 +105,18 @@
   }
 
   test_exportedTopLevelDeclarations_cycle() {
-    String a = _p('/aaa/lib/a.dart');
-    String b = _p('/aaa/lib/b.dart');
-    String c = _p('/aaa/lib/c.dart');
-    provider.newFile(a, r'''
+    String a = convertPath('/aaa/lib/a.dart');
+    String b = convertPath('/aaa/lib/b.dart');
+    String c = convertPath('/aaa/lib/c.dart');
+    newFile(a, content: r'''
 export 'b.dart';
 class A {}
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 export 'c.dart';
 class B {}
 ''');
-    provider.newFile(c, r'''
+    newFile(c, content: r'''
 export 'a.dart';
 class C {}
 ''');
@@ -130,24 +129,24 @@
   }
 
   test_exportedTopLevelDeclarations_cycle_anotherOutsideCycle() {
-    String a = _p('/aaa/lib/a.dart');
-    String b = _p('/aaa/lib/b.dart');
-    String c = _p('/aaa/lib/c.dart');
-    String d = _p('/aaa/lib/d.dart');
-    provider.newFile(a, r'''
+    String a = convertPath('/aaa/lib/a.dart');
+    String b = convertPath('/aaa/lib/b.dart');
+    String c = convertPath('/aaa/lib/c.dart');
+    String d = convertPath('/aaa/lib/d.dart');
+    newFile(a, content: r'''
 export 'b.dart';
 class A {}
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 export 'c.dart';
 class B {}
 ''');
-    provider.newFile(c, r'''
+    newFile(c, content: r'''
 export 'b.dart';
 export 'd.dart';
 class C {}
 ''');
-    provider.newFile(d, r'''
+    newFile(d, content: r'''
 class D {}
 ''');
     _assertExportedTopLevelDeclarations(a, ['A', 'B', 'C', 'D']);
@@ -159,28 +158,28 @@
   }
 
   test_exportedTopLevelDeclarations_cycle_onSequence() {
-    String a = _p('/aaa/lib/a.dart');
-    String b = _p('/aaa/lib/b.dart');
-    String c = _p('/aaa/lib/c.dart');
-    String d = _p('/aaa/lib/d.dart');
-    String e = _p('/aaa/lib/e.dart');
-    provider.newFile(a, r'''
+    String a = convertPath('/aaa/lib/a.dart');
+    String b = convertPath('/aaa/lib/b.dart');
+    String c = convertPath('/aaa/lib/c.dart');
+    String d = convertPath('/aaa/lib/d.dart');
+    String e = convertPath('/aaa/lib/e.dart');
+    newFile(a, content: r'''
 export 'b.dart';
 class A {}
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 export 'c.dart';
 class B {}
 ''');
-    provider.newFile(c, r'''
+    newFile(c, content: r'''
 export 'd.dart';
 class C {}
 ''');
-    provider.newFile(d, r'''
+    newFile(d, content: r'''
 export 'e.dart';
 class D {}
 ''');
-    provider.newFile(e, r'''
+    newFile(e, content: r'''
 export 'c.dart';
 class E {}
 ''');
@@ -197,12 +196,12 @@
   }
 
   test_exportedTopLevelDeclarations_export() {
-    String a = _p('/aaa/lib/a.dart');
-    String b = _p('/aaa/lib/b.dart');
-    provider.newFile(a, r'''
+    String a = convertPath('/aaa/lib/a.dart');
+    String b = convertPath('/aaa/lib/b.dart');
+    newFile(a, content: r'''
 class A {}
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 export 'a.dart';
 class B {}
 ''');
@@ -211,20 +210,20 @@
   }
 
   test_exportedTopLevelDeclarations_export2_show() {
-    String a = _p('/aaa/lib/a.dart');
-    String b = _p('/aaa/lib/b.dart');
-    String c = _p('/aaa/lib/c.dart');
-    provider.newFile(a, r'''
+    String a = convertPath('/aaa/lib/a.dart');
+    String b = convertPath('/aaa/lib/b.dart');
+    String c = convertPath('/aaa/lib/c.dart');
+    newFile(a, content: r'''
 class A1 {}
 class A2 {}
 class A3 {}
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 export 'a.dart' show A1, A2;
 class B1 {}
 class B2 {}
 ''');
-    provider.newFile(c, r'''
+    newFile(c, content: r'''
 export 'b.dart' show A2, A3, B1;
 class C {}
 ''');
@@ -233,12 +232,12 @@
   }
 
   test_exportedTopLevelDeclarations_export_flushOnChange() {
-    String a = _p('/aaa/lib/a.dart');
-    String b = _p('/aaa/lib/b.dart');
-    provider.newFile(a, r'''
+    String a = convertPath('/aaa/lib/a.dart');
+    String b = convertPath('/aaa/lib/b.dart');
+    newFile(a, content: r'''
 class A {}
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 export 'a.dart';
 class B {}
 ''');
@@ -247,20 +246,20 @@
     _assertExportedTopLevelDeclarations(b, ['A', 'B']);
 
     // Update a.dart, so a.dart and b.dart exported declarations are flushed.
-    provider.newFile(a, 'class A {} class A2 {}');
+    newFile(a, content: 'class A {} class A2 {}');
     fileSystemState.getFileForPath(a).refresh();
     _assertExportedTopLevelDeclarations(b, ['A', 'A2', 'B']);
   }
 
   test_exportedTopLevelDeclarations_export_hide() {
-    String a = _p('/aaa/lib/a.dart');
-    String b = _p('/aaa/lib/b.dart');
-    provider.newFile(a, r'''
+    String a = convertPath('/aaa/lib/a.dart');
+    String b = convertPath('/aaa/lib/b.dart');
+    newFile(a, content: r'''
 class A1 {}
 class A2 {}
 class A3 {}
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 export 'a.dart' hide A2;
 class B {}
 ''');
@@ -268,12 +267,12 @@
   }
 
   test_exportedTopLevelDeclarations_export_preferLocal() {
-    String a = _p('/aaa/lib/a.dart');
-    String b = _p('/aaa/lib/b.dart');
-    provider.newFile(a, r'''
+    String a = convertPath('/aaa/lib/a.dart');
+    String b = convertPath('/aaa/lib/b.dart');
+    newFile(a, content: r'''
 class V {}
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 export 'a.dart';
 int V;
 ''');
@@ -285,13 +284,13 @@
   }
 
   test_exportedTopLevelDeclarations_export_show() {
-    String a = _p('/aaa/lib/a.dart');
-    String b = _p('/aaa/lib/b.dart');
-    provider.newFile(a, r'''
+    String a = convertPath('/aaa/lib/a.dart');
+    String b = convertPath('/aaa/lib/b.dart');
+    newFile(a, content: r'''
 class A1 {}
 class A2 {}
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 export 'a.dart' show A2;
 class B {}
 ''');
@@ -299,21 +298,21 @@
   }
 
   test_exportedTopLevelDeclarations_export_show2() {
-    String a = _p('/aaa/lib/a.dart');
-    String b = _p('/aaa/lib/b.dart');
-    String c = _p('/aaa/lib/c.dart');
-    String d = _p('/aaa/lib/d.dart');
-    provider.newFile(a, r'''
+    String a = convertPath('/aaa/lib/a.dart');
+    String b = convertPath('/aaa/lib/b.dart');
+    String c = convertPath('/aaa/lib/c.dart');
+    String d = convertPath('/aaa/lib/d.dart');
+    newFile(a, content: r'''
 export 'b.dart' show Foo;
 export 'c.dart' show Bar;
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 export 'd.dart';
 ''');
-    provider.newFile(c, r'''
+    newFile(c, content: r'''
 export 'd.dart';
 ''');
-    provider.newFile(d, r'''
+    newFile(d, content: r'''
 class Foo {}
 class Bar {}
 ''');
@@ -321,12 +320,12 @@
   }
 
   test_exportedTopLevelDeclarations_import() {
-    String a = _p('/aaa/lib/a.dart');
-    String b = _p('/aaa/lib/b.dart');
-    provider.newFile(a, r'''
+    String a = convertPath('/aaa/lib/a.dart');
+    String b = convertPath('/aaa/lib/b.dart');
+    newFile(a, content: r'''
 class A {}
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 import 'a.dart';
 class B {}
 ''');
@@ -334,14 +333,14 @@
   }
 
   test_exportedTopLevelDeclarations_parts() {
-    String a = _p('/aaa/lib/a.dart');
-    String a2 = _p('/aaa/lib/a2.dart');
-    provider.newFile(a, r'''
+    String a = convertPath('/aaa/lib/a.dart');
+    String a2 = convertPath('/aaa/lib/a2.dart');
+    newFile(a, content: r'''
 library lib;
 part 'a2.dart';
 class A1 {}
 ''');
-    provider.newFile(a2, r'''
+    newFile(a2, content: r'''
 part of lib;
 class A2 {}
 ''');
@@ -349,7 +348,7 @@
   }
 
   test_getFileForPath_doesNotExist() {
-    String path = _p('/aaa/lib/a.dart');
+    String path = convertPath('/aaa/lib/a.dart');
     FileState file = fileSystemState.getFileForPath(path);
     expect(file.path, path);
     expect(file.uri, Uri.parse('package:aaa/a.dart'));
@@ -367,8 +366,8 @@
   }
 
   test_getFileForPath_emptyUri() {
-    String path = _p('/test.dart');
-    provider.newFile(path, r'''
+    String path = convertPath('/test.dart');
+    newFile(path, content: r'''
 import '';
 export '';
 part '';
@@ -381,8 +380,8 @@
   }
 
   test_getFileForPath_hasLibraryDirective_hasPartOfDirective() {
-    String a = _p('/test/lib/a.dart');
-    provider.newFile(a, r'''
+    String a = convertPath('/test/lib/a.dart');
+    newFile(a, content: r'''
 library L;
 part of L;
 ''');
@@ -391,10 +390,10 @@
   }
 
   test_getFileForPath_invalidUri() {
-    String a = _p('/aaa/lib/a.dart');
-    String a1 = _p('/aaa/lib/a1.dart');
-    String a2 = _p('/aaa/lib/a2.dart');
-    String a3 = _p('/aaa/lib/a3.dart');
+    String a = convertPath('/aaa/lib/a.dart');
+    String a1 = convertPath('/aaa/lib/a1.dart');
+    String a2 = convertPath('/aaa/lib/a2.dart');
+    String a3 = convertPath('/aaa/lib/a3.dart');
     String content_a1 = r'''
 import 'package:aaa/a1.dart';
 import ':[invalid uri]';
@@ -405,7 +404,7 @@
 part 'a3.dart';
 part ':[invalid uri]';
 ''';
-    provider.newFile(a, content_a1);
+    newFile(a, content: content_a1);
 
     FileState file = fileSystemState.getFileForPath(a);
 
@@ -429,12 +428,12 @@
   }
 
   test_getFileForPath_library() {
-    String a1 = _p('/aaa/lib/a1.dart');
-    String a2 = _p('/aaa/lib/a2.dart');
-    String a3 = _p('/aaa/lib/a3.dart');
-    String a4 = _p('/aaa/lib/a4.dart');
-    String b1 = _p('/bbb/lib/b1.dart');
-    String b2 = _p('/bbb/lib/b2.dart');
+    String a1 = convertPath('/aaa/lib/a1.dart');
+    String a2 = convertPath('/aaa/lib/a2.dart');
+    String a3 = convertPath('/aaa/lib/a3.dart');
+    String a4 = convertPath('/aaa/lib/a4.dart');
+    String b1 = convertPath('/bbb/lib/b1.dart');
+    String b2 = convertPath('/bbb/lib/b2.dart');
     String content_a1 = r'''
 import 'package:aaa/a2.dart';
 import 'package:bbb/b1.dart';
@@ -444,7 +443,7 @@
 
 class A1 {}
 ''';
-    provider.newFile(a1, content_a1);
+    newFile(a1, content: content_a1);
 
     FileState file = fileSystemState.getFileForPath(a1);
     expect(file.path, a1);
@@ -485,12 +484,12 @@
   }
 
   test_getFileForPath_onlyDartFiles() {
-    String not_dart = _p('/test/lib/not_dart.txt');
-    String a = _p('/test/lib/a.dart');
-    String b = _p('/test/lib/b.dart');
-    String c = _p('/test/lib/c.dart');
-    String d = _p('/test/lib/d.dart');
-    provider.newFile(a, r'''
+    String not_dart = convertPath('/test/lib/not_dart.txt');
+    String a = convertPath('/test/lib/a.dart');
+    String b = convertPath('/test/lib/b.dart');
+    String c = convertPath('/test/lib/c.dart');
+    String d = convertPath('/test/lib/d.dart');
+    newFile(a, content: r'''
 library lib;
 import 'dart:math';
 import 'b.dart';
@@ -511,13 +510,13 @@
   }
 
   test_getFileForPath_part() {
-    String a1 = _p('/aaa/lib/a1.dart');
-    String a2 = _p('/aaa/lib/a2.dart');
-    provider.newFile(a1, r'''
+    String a1 = convertPath('/aaa/lib/a1.dart');
+    String a2 = convertPath('/aaa/lib/a2.dart');
+    newFile(a1, content: r'''
 library a1;
 part 'a2.dart';
 ''');
-    provider.newFile(a2, r'''
+    newFile(a2, content: r'''
 part of a1;
 class A2 {}
 ''');
@@ -552,7 +551,7 @@
     // Now update the library, and refresh its file.
     // The 'a2.dart' is not referenced anymore.
     // So the part file does not have the library anymore.
-    provider.newFile(a1, r'''
+    newFile(a1, content: r'''
 library a1;
 part 'not-a2.dart';
 ''');
@@ -561,7 +560,7 @@
   }
 
   test_getFileForPath_samePath() {
-    String path = _p('/aaa/lib/a.dart');
+    String path = convertPath('/aaa/lib/a.dart');
     FileState file1 = fileSystemState.getFileForPath(path);
     FileState file2 = fileSystemState.getFileForPath(path);
     expect(file2, same(file1));
@@ -577,9 +576,9 @@
   }
 
   test_getFileForUri_packageVsFileUri() {
-    String path = _p('/aaa/lib/a.dart');
+    String path = convertPath('/aaa/lib/a.dart');
     var packageUri = Uri.parse('package:aaa/a.dart');
-    var fileUri = provider.pathContext.toUri(path);
+    var fileUri = toUri(path);
 
     // The files with `package:` and `file:` URIs are different.
     FileState filePackageUri = fileSystemState.getFileForUri(packageUri);
@@ -598,14 +597,14 @@
   }
 
   test_getFilesSubtypingName() {
-    String a = _p('/a.dart');
-    String b = _p('/b.dart');
+    String a = convertPath('/a.dart');
+    String b = convertPath('/b.dart');
 
-    provider.newFile(a, r'''
+    newFile(a, content: r'''
 class A {}
 class B extends A {}
 ''');
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 class A {}
 class D implements A {}
 ''');
@@ -619,7 +618,7 @@
     );
 
     // Change b.dart so that it does not subtype A.
-    provider.newFile(b, r'''
+    newFile(b, content: r'''
 class C {}
 class D implements C {}
 ''');
@@ -636,8 +635,8 @@
 
   test_hasUri() {
     Uri uri = Uri.parse('package:aaa/foo.dart');
-    String templatePath = _p('/aaa/lib/foo.dart');
-    String generatedPath = _p('/generated/aaa/lib/foo.dart');
+    String templatePath = convertPath('/aaa/lib/foo.dart');
+    String generatedPath = convertPath('/generated/aaa/lib/foo.dart');
 
     Source generatedSource = new _SourceMock(generatedPath, uri);
 
@@ -648,9 +647,87 @@
     expect(fileSystemState.hasUri(generatedPath), isTrue);
   }
 
+  test_libraryCycle() {
+    String pa = convertPath('/aaa/lib/a.dart');
+    String pb = convertPath('/aaa/lib/b.dart');
+    String pc = convertPath('/aaa/lib/c.dart');
+    String pd = convertPath('/aaa/lib/d.dart');
+
+    FileState fa = fileSystemState.getFileForPath(pa);
+    FileState fb = fileSystemState.getFileForPath(pb);
+    FileState fc = fileSystemState.getFileForPath(pc);
+    FileState fd = fileSystemState.getFileForPath(pd);
+
+    // Compute library cycles for all files.
+    fa.libraryCycle;
+    fb.libraryCycle;
+    fc.libraryCycle;
+    fd.libraryCycle;
+    _assertFilesWithoutLibraryCycle([]);
+
+    // No imports, so just a single file.
+    newFile(pa);
+    _assertLibraryCycle(fa, [fa], []);
+
+    // Import b.dart into a.dart, two files now.
+    newFile(pa, content: "import 'b.dart';");
+    fa.refresh();
+    _assertFilesWithoutLibraryCycle([fa]);
+    _assertLibraryCycle(fa, [fa], [fb.libraryCycle]);
+
+    // Update b.dart so that it imports c.dart now.
+    newFile(pb, content: "import 'c.dart';");
+    fb.refresh();
+    _assertFilesWithoutLibraryCycle([fa, fb]);
+    _assertLibraryCycle(fa, [fa], [fb.libraryCycle]);
+    _assertLibraryCycle(fb, [fb], [fc.libraryCycle]);
+    _assertFilesWithoutLibraryCycle([]);
+
+    // Update b.dart so that it exports d.dart instead.
+    newFile(pb, content: "export 'd.dart';");
+    fb.refresh();
+    _assertFilesWithoutLibraryCycle([fa, fb]);
+    _assertLibraryCycle(fa, [fa], [fb.libraryCycle]);
+    _assertLibraryCycle(fb, [fb], [fd.libraryCycle]);
+    _assertFilesWithoutLibraryCycle([]);
+
+    // Update a.dart so that it does not import b.dart anymore.
+    newFile(pa);
+    fa.refresh();
+    _assertFilesWithoutLibraryCycle([fa]);
+    _assertLibraryCycle(fa, [fa], []);
+  }
+
+  test_libraryCycle_cycle() {
+    String pa = convertPath('/aaa/lib/a.dart');
+    String pb = convertPath('/aaa/lib/b.dart');
+
+    newFile(pa, content: "import 'b.dart';");
+    newFile(pb, content: "import 'a.dart';");
+
+    FileState fa = fileSystemState.getFileForPath(pa);
+    FileState fb = fileSystemState.getFileForPath(pb);
+
+    // Compute library cycles for all files.
+    fa.libraryCycle;
+    fb.libraryCycle;
+    _assertFilesWithoutLibraryCycle([]);
+
+    // It's a cycle.
+    _assertLibraryCycle(fa, [fa, fb], []);
+    _assertLibraryCycle(fb, [fa, fb], []);
+
+    // Update a.dart so that it does not import b.dart anymore.
+    newFile(pa);
+    fa.refresh();
+    _assertFilesWithoutLibraryCycle([fa, fb]);
+    _assertLibraryCycle(fa, [fa], []);
+    _assertLibraryCycle(fb, [fb], [fa.libraryCycle]);
+  }
+
   test_referencedNames() {
-    String path = _p('/aaa/lib/a.dart');
-    provider.newFile(path, r'''
+    String path = convertPath('/aaa/lib/a.dart');
+    newFile(path, content: r'''
 A foo(B p) {
   foo(null);
   C c = new C(p);
@@ -662,8 +739,8 @@
   }
 
   test_refresh_differentApiSignature() {
-    String path = _p('/aaa/lib/a.dart');
-    provider.newFile(path, r'''
+    String path = convertPath('/aaa/lib/a.dart');
+    newFile(path, content: r'''
 class A {}
 ''');
     FileState file = fileSystemState.getFileForPath(path);
@@ -671,7 +748,7 @@
     List<int> signature = file.apiSignature;
 
     // Update the resource and refresh the file state.
-    provider.newFile(path, r'''
+    newFile(path, content: r'''
 class B {}
 ''');
     bool apiSignatureChanged = file.refresh();
@@ -682,8 +759,8 @@
   }
 
   test_refresh_sameApiSignature() {
-    String path = _p('/aaa/lib/a.dart');
-    provider.newFile(path, r'''
+    String path = convertPath('/aaa/lib/a.dart');
+    newFile(path, content: r'''
 class C {
   foo() {
     print(111);
@@ -694,7 +771,7 @@
     List<int> signature = file.apiSignature;
 
     // Update the resource and refresh the file state.
-    provider.newFile(path, r'''
+    newFile(path, content: r'''
 class C {
   foo() {
     print(222);
@@ -708,8 +785,8 @@
   }
 
   test_store_zeroLengthUnlinked() {
-    String path = _p('/test.dart');
-    provider.newFile(path, 'class A {}');
+    String path = convertPath('/test.dart');
+    newFile(path, content: 'class A {}');
 
     // Get the file, prepare unlinked.
     FileState file = fileSystemState.getFileForPath(path);
@@ -724,8 +801,8 @@
   }
 
   test_subtypedNames() {
-    String path = _p('/test.dart');
-    provider.newFile(path, r'''
+    String path = convertPath('/test.dart');
+    newFile(path, content: r'''
 class X extends A {}
 class Y extends A with B {}
 class Z implements C, D {}
@@ -735,8 +812,8 @@
   }
 
   test_topLevelDeclarations() {
-    String path = _p('/aaa/lib/a.dart');
-    provider.newFile(path, r'''
+    String path = convertPath('/aaa/lib/a.dart');
+    newFile(path, content: r'''
 class C {}
 typedef F();
 enum E {E1, E2}
@@ -775,95 +852,16 @@
     assertHas('V4', TopLevelDeclarationKind.variable);
   }
 
-  test_transitiveFiles() {
-    String pa = _p('/aaa/lib/a.dart');
-    String pb = _p('/aaa/lib/b.dart');
-    String pc = _p('/aaa/lib/c.dart');
-    String pd = _p('/aaa/lib/d.dart');
-
-    FileState fa = fileSystemState.getFileForPath(pa);
-    FileState fb = fileSystemState.getFileForPath(pb);
-    FileState fc = fileSystemState.getFileForPath(pc);
-    FileState fd = fileSystemState.getFileForPath(pd);
-
-    // Compute transitive closures for all files.
-    fa.transitiveFiles;
-    fb.transitiveFiles;
-    fc.transitiveFiles;
-    fd.transitiveFiles;
-    expect(
-        _excludeSdk(fileSystemState.test.filesWithoutTransitiveFiles), isEmpty);
-
-    // No imports, so just a single file.
-    provider.newFile(pa, "");
-    _assertTransitiveFiles(fa, [fa]);
-
-    // Import b.dart into a.dart, two files now.
-    provider.newFile(pa, "import 'b.dart';");
-    fa.refresh();
-    _assertFilesWithoutTransitiveFiles([fa]);
-    _assertTransitiveFiles(fa, [fa, fb]);
-
-    // Update b.dart so that it imports c.dart now.
-    provider.newFile(pb, "import 'c.dart';");
-    fb.refresh();
-    _assertFilesWithoutTransitiveFiles([fa, fb]);
-    _assertTransitiveFiles(fa, [fa, fb, fc]);
-    _assertTransitiveFiles(fb, [fb, fc]);
-    _assertFilesWithoutTransitiveFiles([]);
-
-    // Update b.dart so that it exports d.dart instead.
-    provider.newFile(pb, "export 'd.dart';");
-    fb.refresh();
-    _assertFilesWithoutTransitiveFiles([fa, fb]);
-    _assertTransitiveFiles(fa, [fa, fb, fd]);
-    _assertTransitiveFiles(fb, [fb, fd]);
-    _assertFilesWithoutTransitiveFiles([]);
-
-    // Update a.dart so that it does not import b.dart anymore.
-    provider.newFile(pa, "");
-    fa.refresh();
-    _assertFilesWithoutTransitiveFiles([fa]);
-    _assertTransitiveFiles(fa, [fa]);
-  }
-
-  test_transitiveFiles_cycle() {
-    String pa = _p('/aaa/lib/a.dart');
-    String pb = _p('/aaa/lib/b.dart');
-
-    provider.newFile(pa, "import 'b.dart';");
-    provider.newFile(pb, "import 'a.dart';");
-
-    FileState fa = fileSystemState.getFileForPath(pa);
-    FileState fb = fileSystemState.getFileForPath(pb);
-
-    // Compute transitive closures for all files.
-    fa.transitiveFiles;
-    fb.transitiveFiles;
-    _assertFilesWithoutTransitiveFiles([]);
-
-    // It's a cycle.
-    _assertTransitiveFiles(fa, [fa, fb]);
-    _assertTransitiveFiles(fb, [fa, fb]);
-
-    // Update a.dart so that it does not import b.dart anymore.
-    provider.newFile(pa, "");
-    fa.refresh();
-    _assertFilesWithoutTransitiveFiles([fa, fb]);
-    _assertTransitiveFiles(fa, [fa]);
-    _assertTransitiveFiles(fb, [fa, fb]);
-  }
-
   test_transitiveSignature() {
-    String pa = _p('/aaa/lib/a.dart');
-    String pb = _p('/aaa/lib/b.dart');
-    String pc = _p('/aaa/lib/c.dart');
-    String pd = _p('/aaa/lib/d.dart');
+    String pa = convertPath('/aaa/lib/a.dart');
+    String pb = convertPath('/aaa/lib/b.dart');
+    String pc = convertPath('/aaa/lib/c.dart');
+    String pd = convertPath('/aaa/lib/d.dart');
 
-    provider.newFile(pa, "class A {}");
-    provider.newFile(pb, "import 'a.dart';");
-    provider.newFile(pc, "import 'b.dart';");
-    provider.newFile(pd, "class D {}");
+    newFile(pa, content: "class A {}");
+    newFile(pb, content: "import 'a.dart';");
+    newFile(pc, content: "import 'b.dart';");
+    newFile(pd, content: "class D {}");
 
     FileState fa = fileSystemState.getFileForPath(pa);
     FileState fb = fileSystemState.getFileForPath(pb);
@@ -871,25 +869,24 @@
     FileState fd = fileSystemState.getFileForPath(pd);
 
     // Compute transitive closures for all files.
+    // This implicitly computes library cycles.
     expect(fa.transitiveSignature, isNotNull);
     expect(fb.transitiveSignature, isNotNull);
     expect(fc.transitiveSignature, isNotNull);
     expect(fd.transitiveSignature, isNotNull);
-    expect(
-        _excludeSdk(fileSystemState.test.filesWithoutTransitiveFiles), isEmpty);
+    _assertFilesWithoutLibraryCycle([]);
 
     // Make an update to a.dart that does not change its API signature.
-    // All transitive signatures are still valid.
-    provider.newFile(pa, "class A {} // the same API signature");
+    // All library cycles are still valid.
+    newFile(pa, content: "class A {} // the same API signature");
     fa.refresh();
-    expect(
-        _excludeSdk(fileSystemState.test.filesWithoutTransitiveFiles), isEmpty);
+    _assertFilesWithoutLibraryCycle([]);
 
-    // Change a.dart API signature, also flush signatures of b.dart and c.dart,
-    // but d.dart is still OK.
-    provider.newFile(pa, "class A2 {}");
+    // Change a.dart API signature.
+    // This flushes signatures of b.dart and c.dart, but d.dart is still OK.
+    newFile(pa, content: "class A2 {}");
     fa.refresh();
-    _assertFilesWithoutTransitiveSignatures([fa, fb, fc]);
+    _assertFilesWithoutLibraryCycle([fa, fb, fc]);
   }
 
   void _assertExportedTopLevelDeclarations(String path, List<String> expected) {
@@ -899,13 +896,8 @@
     expect(declarations.keys, unorderedEquals(expected));
   }
 
-  void _assertFilesWithoutTransitiveFiles(List<FileState> expected) {
-    var actual = fileSystemState.test.filesWithoutTransitiveFiles;
-    expect(_excludeSdk(actual), unorderedEquals(expected));
-  }
-
-  void _assertFilesWithoutTransitiveSignatures(List<FileState> expected) {
-    var actual = fileSystemState.test.filesWithoutTransitiveSignature;
+  void _assertFilesWithoutLibraryCycle(List<FileState> expected) {
+    var actual = fileSystemState.test.filesWithoutLibraryCycle;
     expect(_excludeSdk(actual), unorderedEquals(expected));
   }
 
@@ -921,22 +913,30 @@
     expect(file.source, isNull);
   }
 
-  void _assertTransitiveFiles(FileState file, List<FileState> expected) {
-    expect(_excludeSdk(file.transitiveFiles), unorderedEquals(expected));
+  void _assertLibraryCycle(
+    FileState file,
+    List<FileState> expectedLibraries,
+    List<LibraryCycle> expectedDirectDependencies,
+  ) {
+    expect(file.libraryCycle.libraries, unorderedEquals(expectedLibraries));
+    expect(
+      _excludeSdk(file.libraryCycle.directDependencies),
+      unorderedEquals(expectedDirectDependencies),
+    );
   }
 
   List<T> _excludeSdk<T>(Iterable<T> files) {
     return files.where((Object file) {
-      if (file is FileState) {
+      if (file is LibraryCycle) {
+        return !file.libraries.any((file) => file.uri.isScheme('dart'));
+      } else if (file is FileState) {
         return file.uri?.scheme != 'dart';
       } else {
-        return !(file as String).startsWith(_p('/sdk'));
+        return !(file as String).startsWith(convertPath('/sdk'));
       }
     }).toList();
   }
 
-  String _p(String path) => provider.convertPath(path);
-
   static String _md5(String content) {
     return hex.encode(md5.convert(utf8.encode(content)).bytes);
   }
diff --git a/pkg/analyzer/test/src/dart/analysis/index_test.dart b/pkg/analyzer/test/src/dart/analysis/index_test.dart
index e3106d1..94fbd94 100644
--- a/pkg/analyzer/test/src/dart/analysis/index_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/index_test.dart
@@ -5,9 +5,9 @@
 import 'dart:async';
 import 'dart:convert';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/index.dart';
 import 'package:analyzer/src/summary/format.dart';
 import 'package:analyzer/src/summary/idl.dart';
@@ -134,7 +134,7 @@
   }
 
   test_isExtendedBy_ClassDeclaration_isQualified() async {
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 class A {}
 ''');
     await _indexTestUnit('''
@@ -167,7 +167,7 @@
   }
 
   test_isExtendedBy_ClassTypeAlias_isQualified() async {
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 class A {}
 ''');
     await _indexTestUnit('''
@@ -193,7 +193,7 @@
   }
 
   test_isImplementedBy_ClassDeclaration_isQualified() async {
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 class A {}
 ''');
     await _indexTestUnit('''
@@ -256,7 +256,7 @@
   }
 
   test_isInvokedBy_FunctionElement() async {
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 library lib;
 foo() {}
 ''');
@@ -393,7 +393,7 @@
   }
 
   test_isMixedInBy_ClassDeclaration_isQualified() async {
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 class A {}
 ''');
     await _indexTestUnit('''
@@ -465,7 +465,7 @@
   }
 
   test_isReferencedBy_ClassElement_invocation_isQualified() async {
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 class A {}
 ''');
     await _indexTestUnit('''
@@ -504,7 +504,7 @@
   }
 
   test_isReferencedBy_CompilationUnitElement_export() async {
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 library lib;
 ''');
     await _indexTestUnit('''
@@ -515,7 +515,7 @@
   }
 
   test_isReferencedBy_CompilationUnitElement_import() async {
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 library lib;
 ''');
     await _indexTestUnit('''
@@ -526,7 +526,7 @@
   }
 
   test_isReferencedBy_CompilationUnitElement_part() async {
-    provider.newFile(_p('$testProject/my_unit.dart'), 'part of my_lib;');
+    newFile('$testProject/my_unit.dart', content: 'part of my_lib;');
     await _indexTestUnit('''
 library my_lib;
 part 'my_unit.dart';
@@ -536,8 +536,8 @@
   }
 
   test_isReferencedBy_CompilationUnitElement_part_inPart() async {
-    provider.newFile(_p('$testProject/a.dart'), 'part of lib;');
-    provider.newFile(_p('$testProject/b.dart'), '''
+    newFile('$testProject/a.dart', content: 'part of lib;');
+    newFile('$testProject/b.dart', content: '''
 library lib;
 part 'a.dart';
 ''');
@@ -803,7 +803,7 @@
   }
 
   test_isReferencedBy_FunctionElement_with_LibraryElement() async {
-    provider.newFile(_p('$testProject/foo.dart'), r'''
+    newFile('$testProject/foo.dart', content: r'''
 bar() {}
 ''');
     await _indexTestUnit('''
@@ -863,8 +863,8 @@
   }
 
   test_isReferencedBy_MultiplyDefinedElement() async {
-    provider.newFile(_p('$testProject/a1.dart'), 'class A {}');
-    provider.newFile(_p('$testProject/a2.dart'), 'class A {}');
+    newFile('$testProject/a1.dart', content: 'class A {}');
+    newFile('$testProject/a2.dart', content: 'class A {}');
     await _indexTestUnit('''
 import 'a1.dart';
 import 'a2.dart';
@@ -911,7 +911,7 @@
   }
 
   test_isReferencedBy_TopLevelVariableElement() async {
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 library lib;
 var V;
 ''');
@@ -935,7 +935,7 @@
   }
 
   test_isReferencedBy_TopLevelVariableElement_synthetic_hasGetterSetter() async {
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 int get V => 0;
 void set V(_) {}
 ''');
@@ -947,7 +947,7 @@
   }
 
   test_isReferencedBy_TopLevelVariableElement_synthetic_hasSetter() async {
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 void set V(_) {}
 ''');
     await _indexTestUnit('''
@@ -982,7 +982,7 @@
 
   test_subtypes_classDeclaration() async {
     String libP = 'package:test/lib.dart;package:test/lib.dart';
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 class A {}
 class B {}
 class C {}
@@ -1032,7 +1032,7 @@
 
   test_subtypes_classTypeAlias() async {
     String libP = 'package:test/lib.dart;package:test/lib.dart';
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 class A {}
 class B {}
 class C {}
@@ -1070,7 +1070,7 @@
 
   test_subtypes_mixinDeclaration() async {
     String libP = 'package:test/lib.dart;package:test/lib.dart';
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 class A {}
 class B {}
 class C {}
@@ -1339,7 +1339,7 @@
   Future<Null> _indexTestUnit(String code) async {
     addTestFile(code);
 
-    AnalysisResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     testUnit = result.unit;
     testUnitElement = testUnit.declaredElement;
     testLibraryElement = testUnitElement.library;
@@ -1348,8 +1348,6 @@
     List<int> indexBytes = indexBuilder.toBuffer();
     index = new AnalysisDriverUnitIndex.fromBuffer(indexBytes);
   }
-
-  String _p(String path) => provider.convertPath(path);
 }
 
 class _ElementIndexAssert {
diff --git a/pkg/analyzer/test/src/dart/analysis/search_test.dart b/pkg/analyzer/test/src/dart/analysis/search_test.dart
index ad2bc6e..2d67389 100644
--- a/pkg/analyzer/test/src/dart/analysis/search_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/search_test.dart
@@ -5,10 +5,10 @@
 import 'dart:async';
 import 'dart:collection';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart' hide Declaration;
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/search.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
 import 'package:analyzer/src/dart/element/member.dart';
@@ -149,15 +149,15 @@
   }
 
   test_declarations_discover() async {
-    var t = _p('/test/lib/t.dart');
-    var a = _p('/aaa/lib/a.dart');
-    var b = _p('/bbb/lib/b.dart');
-    var c = _p('/ccc/lib/c.dart');
+    var t = convertPath('/test/lib/t.dart');
+    var a = convertPath('/aaa/lib/a.dart');
+    var b = convertPath('/bbb/lib/b.dart');
+    var c = convertPath('/ccc/lib/c.dart');
 
-    provider.newFile(t, 'class T {}');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'class B {}');
-    provider.newFile(c, 'class C {}');
+    newFile(t, content: 'class T {}');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'class B {}');
+    newFile(c, content: 'class C {}');
 
     driver.addFile(t);
 
@@ -170,11 +170,11 @@
   }
 
   test_declarations_duplicateFile() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
 
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'class B {}');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'class B {}');
 
     driver.addFile(a);
     driver.addFile(b);
@@ -243,10 +243,10 @@
   }
 
   test_declarations_onlyForFile() async {
-    var a = _p('/test/lib/a.dart');
-    var b = _p('/test/lib/b.dart');
-    provider.newFile(a, 'class A {}');
-    provider.newFile(b, 'class B {}');
+    var a = convertPath('/test/lib/a.dart');
+    var b = convertPath('/test/lib/b.dart');
+    newFile(a, content: 'class A {}');
+    newFile(b, content: 'class B {}');
 
     driver.addFile(a);
     driver.addFile(b);
@@ -423,15 +423,15 @@
   }
 
   test_references_discover() async {
-    var t = _p('/test/lib/t.dart');
-    var a = _p('/aaa/lib/a.dart');
-    var b = _p('/bbb/lib/b.dart');
-    var c = _p('/ccc/lib/c.dart');
+    var t = convertPath('/test/lib/t.dart');
+    var a = convertPath('/aaa/lib/a.dart');
+    var b = convertPath('/bbb/lib/b.dart');
+    var c = convertPath('/ccc/lib/c.dart');
 
-    provider.newFile(t, 'List t;');
-    provider.newFile(a, 'List a;');
-    provider.newFile(b, 'List b;');
-    provider.newFile(c, 'List c;');
+    newFile(t, content: 'List t;');
+    newFile(a, content: 'List a;');
+    newFile(b, content: 'List b;');
+    newFile(c, content: 'List c;');
 
     driver.addFile(t);
 
@@ -456,13 +456,13 @@
   }
 
   test_references_discover_onlyOwned() async {
-    var t = _p('/test/lib/t.dart');
-    var a = _p('/aaa/lib/a.dart');
-    var b = _p('/bbb/lib/b.dart');
+    var t = convertPath('/test/lib/t.dart');
+    var a = convertPath('/aaa/lib/a.dart');
+    var b = convertPath('/bbb/lib/b.dart');
 
-    provider.newFile(t, 'List t;');
-    provider.newFile(a, 'List a;');
-    provider.newFile(b, 'List b;');
+    newFile(t, content: 'List t;');
+    newFile(a, content: 'List a;');
+    newFile(b, content: 'List b;');
 
     driver.addFile(t);
     driver.addFile(a);
@@ -492,11 +492,11 @@
   }
 
   test_references_discover_onlyOwned_samePath() async {
-    var p = _p('/test/lib/t.dart');
-    provider.newFile(p, 'int t;');
+    var p = convertPath('/test/lib/t.dart');
+    newFile(p, content: 'int t;');
 
     var driver1 = createAnalysisDriver(packageMap: {
-      'test': [provider.newFolder(_p('/test/lib'))]
+      'test': [newFolder('/test/lib')]
     });
     var driver2 = createAnalysisDriver(packageMap: {});
 
@@ -512,17 +512,17 @@
   }
 
   test_references_discover_onlyOwned_sameUri() async {
-    var a = _p('/aaa/lib/t.dart');
-    var b = _p('/bbb/lib/t.dart');
+    var a = convertPath('/aaa/lib/t.dart');
+    var b = convertPath('/bbb/lib/t.dart');
 
-    provider.newFile(a, 'int t;');
-    provider.newFile(b, 'double t;');
+    newFile(a, content: 'int t;');
+    newFile(b, content: 'double t;');
 
     var driver1 = createAnalysisDriver(packageMap: {
-      'ttt': [provider.newFolder(_p('/aaa/lib'))]
+      'ttt': [newFolder('/aaa/lib')]
     });
     var driver2 = createAnalysisDriver(packageMap: {
-      'ttt': [provider.newFolder(_p('/bbb/lib'))]
+      'ttt': [newFolder('/bbb/lib')]
     });
 
     // driver1 owns `/aaa/lib/t.dart` with `package:ttt/t.dart`.
@@ -620,7 +620,7 @@
     ClassElement randomElement;
     {
       String randomPath = sdk.mapDartUri('dart:math').fullName;
-      AnalysisResult result = await driver.getResult(randomPath);
+      ResolvedUnitResult result = await driver.getResult(randomPath);
       randomElement = result.unit.declaredElement.getType('Random');
     }
 
@@ -680,7 +680,7 @@
   }
 
   test_searchReferences_ClassElement_definedOutside() async {
-    provider.newFile(_p('$testProject/lib.dart'), r'''
+    newFile('$testProject/lib.dart', content: r'''
 class A {};
 ''');
     await _resolveTestUnit('''
@@ -713,7 +713,7 @@
   }
 
   test_searchReferences_CompilationUnitElement() async {
-    provider.newFile(_p('$testProject/foo.dart'), '');
+    newFile('$testProject/foo.dart');
     await _resolveTestUnit('''
 import 'foo.dart'; // import
 export 'foo.dart'; // export
@@ -750,14 +750,14 @@
   }
 
   test_searchReferences_ConstructorElement_default_otherFile() async {
-    String other = _p('$testProject/other.dart');
+    String other = convertPath('$testProject/other.dart');
     String otherCode = '''
 import 'test.dart';
 main() {
   new A(); // in other
 }
 ''';
-    provider.newFile(other, otherCode);
+    newFile(other, content: otherCode);
     driver.addFile(other);
 
     await _resolveTestUnit('''
@@ -962,7 +962,7 @@
   }
 
   test_searchReferences_ImportElement_noPrefix_inPackage() async {
-    testFile = _p('/aaa/lib/a.dart');
+    testFile = convertPath('/aaa/lib/a.dart');
     await _resolveTestUnit('''
 import 'dart:math' show max, PI, Random hide min;
 export 'dart:math' show max, PI, Random hide min;
@@ -1063,8 +1063,8 @@
   test_searchReferences_LibraryElement() async {
     var codeA = 'part of lib; // A';
     var codeB = 'part of lib; // B';
-    provider.newFile(_p('$testProject/unitA.dart'), codeA);
-    provider.newFile(_p('$testProject/unitB.dart'), codeB);
+    newFile('$testProject/unitA.dart', content: codeA);
+    newFile('$testProject/unitB.dart', content: codeB);
     await _resolveTestUnit('''
 library lib;
 part 'unitA.dart';
@@ -1083,14 +1083,14 @@
   }
 
   test_searchReferences_LibraryElement_inPackage() async {
-    testFile = _p('/aaa/lib/a.dart');
-    var partPathA = _p('/aaa/lib/unitA.dart');
-    var partPathB = _p('/aaa/lib/unitB.dart');
+    testFile = convertPath('/aaa/lib/a.dart');
+    var partPathA = convertPath('/aaa/lib/unitA.dart');
+    var partPathB = convertPath('/aaa/lib/unitB.dart');
 
     var codeA = 'part of lib; // A';
     var codeB = 'part of lib; // B';
-    provider.newFile(partPathA, codeA);
-    provider.newFile(partPathB, codeB);
+    newFile(partPathA, content: codeA);
+    newFile(partPathB, content: codeB);
     await _resolveTestUnit('''
 library lib;
 part 'unitA.dart';
@@ -1152,7 +1152,7 @@
   }
 
   test_searchReferences_LocalVariableElement_inPackage() async {
-    testFile = _p('/aaa/lib/a.dart');
+    testFile = convertPath('/aaa/lib/a.dart');
 
     await _resolveTestUnit('''
 main() {
@@ -1370,7 +1370,7 @@
 part of my_lib;
 ppp.Future c;
 ''';
-    provider.newFile(_p('$testProject/my_part.dart'), partCode);
+    newFile('$testProject/my_part.dart', content: partCode);
     await _resolveTestUnit('''
 library my_lib;
 import 'dart:async' as ppp;
@@ -1393,14 +1393,14 @@
   }
 
   test_searchReferences_PrefixElement_inPackage() async {
-    testFile = _p('/aaa/lib/a.dart');
-    var partPath = _p('/aaa/lib/my_part.dart');
+    testFile = convertPath('/aaa/lib/a.dart');
+    var partPath = convertPath('/aaa/lib/my_part.dart');
 
     String partCode = r'''
 part of my_lib;
 ppp.Future c;
 ''';
-    provider.newFile(partPath, partCode);
+    newFile(partPath, content: partCode);
     await _resolveTestUnit('''
 library my_lib;
 import 'dart:async' as ppp;
@@ -1423,14 +1423,14 @@
   }
 
   test_searchReferences_private_declaredInDefiningUnit() async {
-    String p1 = _p('$testProject/part1.dart');
-    String p2 = _p('$testProject/part2.dart');
-    String p3 = _p('$testProject/part3.dart');
+    String p1 = convertPath('$testProject/part1.dart');
+    String p2 = convertPath('$testProject/part2.dart');
+    String p3 = convertPath('$testProject/part3.dart');
     String code1 = 'part of lib; _C v1;';
     String code2 = 'part of lib; _C v2;';
-    provider.newFile(p1, code1);
-    provider.newFile(p2, code2);
-    provider.newFile(p3, 'part of lib; int v3;');
+    newFile(p1, content: code1);
+    newFile(p2, content: code2);
+    newFile(p3, content: 'part of lib; int v3;');
 
     driver.addFile(p1);
     driver.addFile(p2);
@@ -1459,9 +1459,9 @@
   }
 
   test_searchReferences_private_declaredInPart() async {
-    String p = _p('$testProject/lib.dart');
-    String p1 = _p('$testProject/part1.dart');
-    String p2 = _p('$testProject/part2.dart');
+    String p = convertPath('$testProject/lib.dart');
+    String p1 = convertPath('$testProject/part1.dart');
+    String p2 = convertPath('$testProject/part2.dart');
 
     var code = '''
 library lib;
@@ -1476,15 +1476,15 @@
 ''';
     String code2 = 'part of lib; _C v2;';
 
-    provider.newFile(p, code);
-    provider.newFile(p1, code1);
-    provider.newFile(p2, code2);
+    newFile(p, content: code);
+    newFile(p1, content: code1);
+    newFile(p2, content: code2);
 
     driver.addFile(p);
     driver.addFile(p1);
     driver.addFile(p2);
 
-    AnalysisResult result = await driver.getResult(p);
+    ResolvedUnitResult result = await driver.getResult(p);
     testUnit = result.unit;
     testUnitElement = testUnit.declaredElement;
     testLibraryElement = testUnitElement.library;
@@ -1505,15 +1505,15 @@
   }
 
   test_searchReferences_private_inPackage() async {
-    testFile = _p('/aaa/lib/a.dart');
-    var p1 = _p('/aaa/lib/part1.dart');
-    var p2 = _p('/aaa/lib/part2.dart');
+    testFile = convertPath('/aaa/lib/a.dart');
+    var p1 = convertPath('/aaa/lib/part1.dart');
+    var p2 = convertPath('/aaa/lib/part2.dart');
 
     String code1 = 'part of lib; _C v1;';
     String code2 = 'part of lib; _C v2;';
 
-    provider.newFile(p1, code1);
-    provider.newFile(p2, code2);
+    newFile(p1, content: code1);
+    newFile(p2, content: code2);
 
     await _resolveTestUnit('''
 library lib;
@@ -1581,7 +1581,7 @@
   }
 
   test_searchReferences_TopLevelVariableElement() async {
-    provider.newFile(_p('$testProject/lib.dart'), '''
+    newFile('$testProject/lib.dart', content: '''
 library lib;
 var V;
 ''');
@@ -1768,15 +1768,15 @@
   }
 
   test_subtypes_discover() async {
-    var pathT = _p('/test/lib/t.dart');
-    var pathA = _p('/aaa/lib/a.dart');
-    var pathB = _p('/bbb/lib/b.dart');
+    var pathT = convertPath('/test/lib/t.dart');
+    var pathA = convertPath('/aaa/lib/a.dart');
+    var pathB = convertPath('/bbb/lib/b.dart');
 
     var tUri = 'package:test/t.dart';
     var aUri = 'package:aaa/a.dart';
     var bUri = 'package:bbb/b.dart';
 
-    provider.newFile(pathT, r'''
+    newFile(pathT, content: r'''
 import 'package:aaa/a.dart';
 
 class T1 extends A {
@@ -1788,7 +1788,7 @@
 }
 ''');
 
-    provider.newFile(pathB, r'''
+    newFile(pathB, content: r'''
 import 'package:aaa/a.dart';
 
 class B extends A {
@@ -1796,7 +1796,7 @@
 }
 ''');
 
-    provider.newFile(pathA, r'''
+    newFile(pathA, content: r'''
 class A {
   void method1() {}
   void method2() {}
@@ -1830,15 +1830,15 @@
   }
 
   test_subTypes_discover() async {
-    var t = _p('/test/lib/t.dart');
-    var a = _p('/aaa/lib/a.dart');
-    var b = _p('/bbb/lib/b.dart');
-    var c = _p('/ccc/lib/c.dart');
+    var t = convertPath('/test/lib/t.dart');
+    var a = convertPath('/aaa/lib/a.dart');
+    var b = convertPath('/bbb/lib/b.dart');
+    var c = convertPath('/ccc/lib/c.dart');
 
-    provider.newFile(t, 'class T implements List {}');
-    provider.newFile(a, 'class A implements List {}');
-    provider.newFile(b, 'class B implements List {}');
-    provider.newFile(c, 'class C implements List {}');
+    newFile(t, content: 'class T implements List {}');
+    newFile(a, content: 'class A implements List {}');
+    newFile(b, content: 'class B implements List {}');
+    newFile(c, content: 'class C implements List {}');
 
     driver.addFile(t);
 
@@ -1863,13 +1863,13 @@
   }
 
   test_subtypes_files() async {
-    String pathB = _p('$testProject/b.dart');
-    String pathC = _p('$testProject/c.dart');
-    provider.newFile(pathB, r'''
+    String pathB = convertPath('$testProject/b.dart');
+    String pathC = convertPath('$testProject/c.dart');
+    newFile(pathB, content: r'''
 import 'test.dart';
 class B extends A {}
 ''');
-    provider.newFile(pathC, r'''
+    newFile(pathC, content: r'''
 import 'test.dart';
 class C extends A {}
 class D {}
@@ -2016,17 +2016,15 @@
     return ElementLocator.locate(node);
   }
 
-  String _p(String path) => provider.convertPath(path);
-
   Future<Null> _resolveTestUnit(String code, {bool addToDriver: true}) async {
     if (addToDriver) {
       addTestFile(code);
     } else {
       testCode = code;
-      provider.newFile(testFile, testCode);
+      newFile(testFile, content: testCode);
     }
     if (testUnit == null) {
-      AnalysisResult result = await driver.getResult(testFile);
+      ResolvedUnitResult result = await driver.getResult(testFile);
       testUnit = result.unit;
       testUnitElement = testUnit.declaredElement;
       testLibraryElement = testUnitElement.library;
diff --git a/pkg/analyzer/test/src/dart/analysis/session_helper_test.dart b/pkg/analyzer/test/src/dart/analysis/session_helper_test.dart
index 81e7cbb..f815fbc 100644
--- a/pkg/analyzer/test/src/dart/analysis/session_helper_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/session_helper_test.dart
@@ -2,12 +2,13 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/dart/analysis/session_helper.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import 'base.dart';
+import '../resolution/driver_resolution.dart';
 
 main() {
   defineReflectiveSuite(() {
@@ -16,163 +17,408 @@
 }
 
 @reflectiveTest
-class AnalysisSessionHelperTest extends BaseAnalysisDriverTest {
-  AnalysisSessionHelper sessionHelper;
+class AnalysisSessionHelperTest extends DriverResolutionTest {
+  AnalysisSessionHelper helper;
 
   @override
   void setUp() {
     super.setUp();
-    sessionHelper = new AnalysisSessionHelper(driver.currentSession);
+    helper = new AnalysisSessionHelper(driver.currentSession);
   }
 
   test_getClass_defined() async {
-    var path = _p('/c.dart');
-    var file = provider.newFile(path, r'''
+    var file = newFile('/test/lib/c.dart', content: r'''
 class C {}
 int v = 0;
 ''');
     String uri = file.toUri().toString();
 
-    var element = await sessionHelper.getClass(uri, 'C');
+    var element = await helper.getClass(uri, 'C');
     expect(element, isNotNull);
     expect(element.displayName, 'C');
   }
 
   test_getClass_defined_notClass() async {
-    var path = _p('/c.dart');
-    var file = provider.newFile(path, r'''
+    var file = newFile('/test/lib/c.dart', content: r'''
 int v = 0;
 ''');
     String uri = file.toUri().toString();
 
-    var element = await sessionHelper.getClass(uri, 'v');
+    var element = await helper.getClass(uri, 'v');
     expect(element, isNull);
   }
 
   test_getClass_exported() async {
-    var a = _p('/a.dart');
-    var b = _p('/b.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 class A {}
 ''');
-    var bFile = provider.newFile(b, r'''
+    var bFile = newFile('/test/lib/b.dart', content: r'''
 export 'a.dart';
 ''');
     String bUri = bFile.toUri().toString();
 
-    var element = await sessionHelper.getClass(bUri, 'A');
+    var element = await helper.getClass(bUri, 'A');
     expect(element, isNotNull);
     expect(element.displayName, 'A');
   }
 
   test_getClass_imported() async {
-    var a = _p('/a.dart');
-    var b = _p('/b.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 class A {}
 ''');
-    var bFile = provider.newFile(b, r'''
+    var bFile = newFile('/test/lib/b.dart', content: r'''
 import 'a.dart';
 ''');
     String bUri = bFile.toUri().toString();
 
-    var element = await sessionHelper.getClass(bUri, 'A');
+    var element = await helper.getClass(bUri, 'A');
     expect(element, isNull);
   }
 
+  test_getElementDeclaration_class() async {
+    newFile('/test/lib/test.dart', content: r'''
+class A {}
+''');
+    await resolveTestFile();
+
+    var element = findNode.classDeclaration('A').declaredElement;
+    var result = await helper.getElementDeclaration(element);
+    ClassDeclaration node = result.node;
+    expect(node.name.name, 'A');
+  }
+
+  test_getElementDeclaration_class_duplicate() async {
+    newFile('/test/lib/test.dart', content: r'''
+class A {} // 1
+class A {} // 2
+''');
+    await resolveTestFile();
+
+    {
+      var element = findNode.classDeclaration('A {} // 1').declaredElement;
+      var result = await helper.getElementDeclaration(element);
+      ClassDeclaration node = result.node;
+      expect(node.name.name, 'A');
+      expect(
+        node.name.offset,
+        this.result.content.indexOf('A {} // 1'),
+      );
+    }
+
+    {
+      var element = findNode.classDeclaration('A {} // 2').declaredElement;
+      var result = await helper.getElementDeclaration(element);
+      ClassDeclaration node = result.node;
+      expect(node.name.name, 'A');
+      expect(
+        node.name.offset,
+        this.result.content.indexOf('A {} // 2'),
+      );
+    }
+  }
+
+  test_getElementDeclaration_class_inPart() async {
+    newFile('/test/lib/a.dart', content: r'''
+part of 'test.dart';
+class A {}
+''');
+    newFile('/test/lib/test.dart', content: r'''
+part 'a.dart';
+''');
+    await resolveTestFile();
+
+    var library = this.result.unit.declaredElement.library;
+    var element = library.getType('A');
+    var result = await helper.getElementDeclaration(element);
+    ClassDeclaration node = result.node;
+    expect(node.name.name, 'A');
+  }
+
+  test_getElementDeclaration_constructor() async {
+    newFile('/test/lib/test.dart', content: r'''
+class A {
+  A();
+  A.named();
+}
+''');
+    await resolveTestFile();
+
+    {
+      var unnamed = findNode.constructor('A();').declaredElement;
+      var result = await helper.getElementDeclaration(unnamed);
+      ConstructorDeclaration node = result.node;
+      expect(node.name, isNull);
+    }
+
+    {
+      var named = findNode.constructor('A.named();').declaredElement;
+      var result = await helper.getElementDeclaration(named);
+      ConstructorDeclaration node = result.node;
+      expect(node.name.name, 'named');
+    }
+  }
+
+  test_getElementDeclaration_constructor_duplicate_named() async {
+    newFile('/test/lib/test.dart', content: r'''
+class A {
+  A.named(); // 1
+  A.named(); // 2
+}
+''');
+    await resolveTestFile();
+
+    {
+      var element = findNode.constructor('A.named(); // 1').declaredElement;
+      var result = await helper.getElementDeclaration(element);
+      ConstructorDeclaration node = result.node;
+      expect(node.name.name, 'named');
+      expect(
+        node.name.offset,
+        this.result.content.indexOf('named(); // 1'),
+      );
+    }
+
+    {
+      var element = findNode.constructor('A.named(); // 2').declaredElement;
+      var result = await helper.getElementDeclaration(element);
+      ConstructorDeclaration node = result.node;
+      expect(node.name.name, 'named');
+      expect(
+        node.name.offset,
+        this.result.content.indexOf('named(); // 2'),
+      );
+    }
+  }
+
+  test_getElementDeclaration_constructor_duplicate_unnamed() async {
+    newFile('/test/lib/test.dart', content: r'''
+class A {
+  A(); // 1
+  A(); // 2
+}
+''');
+    await resolveTestFile();
+
+    {
+      var element = findNode.constructor('A(); // 1').declaredElement;
+      var result = await helper.getElementDeclaration(element);
+      ConstructorDeclaration node = result.node;
+      expect(node.name, isNull);
+      expect(
+        node.returnType.offset,
+        this.result.content.indexOf('A(); // 1'),
+      );
+    }
+
+    {
+      var element = findNode.constructor('A(); // 2').declaredElement;
+      var result = await helper.getElementDeclaration(element);
+      ConstructorDeclaration node = result.node;
+      expect(node.name, isNull);
+      expect(
+        node.returnType.offset,
+        this.result.content.indexOf('A(); // 2'),
+      );
+    }
+  }
+
+  test_getElementDeclaration_constructor_synthetic() async {
+    newFile('/test/lib/test.dart', content: r'''
+class A {}
+''');
+    await resolveTestFile();
+
+    var element = findElement.class_('A').unnamedConstructor;
+    expect(element.isSynthetic, isTrue);
+
+    var result = await helper.getElementDeclaration(element);
+    expect(result, isNull);
+  }
+
+  test_getElementDeclaration_field() async {
+    newFile('/test/lib/test.dart', content: r'''
+class C {
+  int foo;
+}
+''');
+    await resolveTestFile();
+
+    var element = findElement.field('foo');
+    var result = await helper.getElementDeclaration(element);
+    VariableDeclaration node = result.node;
+    expect(node.name.name, 'foo');
+  }
+
+  test_getElementDeclaration_functionDeclaration_local() async {
+    newFile('/test/lib/test.dart', content: r'''
+main() {
+  void foo() {}
+}
+''');
+    await resolveTestFile();
+
+    var element = findElement.localFunction('foo');
+    var result = await helper.getElementDeclaration(element);
+    FunctionDeclaration node = result.node;
+    expect(node.name.name, 'foo');
+  }
+
+  test_getElementDeclaration_functionDeclaration_top() async {
+    newFile('/test/lib/test.dart', content: r'''
+void foo() {}
+''');
+    await resolveTestFile();
+
+    var element = findElement.topFunction('foo');
+    var result = await helper.getElementDeclaration(element);
+    FunctionDeclaration node = result.node;
+    expect(node.name.name, 'foo');
+  }
+
+  test_getElementDeclaration_localVariable() async {
+    newFile('/test/lib/test.dart', content: r'''
+main() {
+  int foo;
+}
+''');
+    await resolveTestFile();
+
+    var element = findElement.localVar('foo');
+    var result = await helper.getElementDeclaration(element);
+    VariableDeclaration node = result.node;
+    expect(node.name.name, 'foo');
+  }
+
+  test_getElementDeclaration_method() async {
+    newFile('/test/lib/test.dart', content: r'''
+class C {
+  void foo() {}
+}
+''');
+    await resolveTestFile();
+
+    var element = findElement.method('foo');
+    var result = await helper.getElementDeclaration(element);
+    MethodDeclaration node = result.node;
+    expect(node.name.name, 'foo');
+  }
+
+  test_getElementDeclaration_topLevelVariable() async {
+    newFile('/test/lib/test.dart', content: r'''
+int foo;
+''');
+    await resolveTestFile();
+
+    var element = findElement.topVar('foo');
+    var result = await helper.getElementDeclaration(element);
+    VariableDeclaration node = result.node;
+    expect(node.name.name, 'foo');
+  }
+
+  test_getElementDeclaration_topLevelVariable_synthetic() async {
+    newFile('/test/lib/test.dart', content: r'''
+int get foo => 0;
+''');
+    await resolveTestFile();
+
+    var element = findElement.topVar('foo');
+    var result = await helper.getElementDeclaration(element);
+    expect(result, isNull);
+  }
+
+  test_getResolvedUnitByElement() async {
+    newFile('/test/lib/test.dart', content: r'''
+class A {}
+class B {}
+''');
+    await resolveTestFile();
+
+    var element = findNode.classDeclaration('A').declaredElement;
+    var resolvedUnit = await helper.getResolvedUnitByElement(element);
+    expect(resolvedUnit.unit.declarations, hasLength(2));
+  }
+
   test_getTopLevelPropertyAccessor_defined_getter() async {
-    var path = _p('/test.dart');
-    var file = provider.newFile(path, r'''
+    var file = newFile('/test/lib/test.dart', content: r'''
 int get a => 0;
 ''');
     String uri = file.toUri().toString();
 
-    var element = await sessionHelper.getTopLevelPropertyAccessor(uri, 'a');
+    var element = await helper.getTopLevelPropertyAccessor(uri, 'a');
     expect(element, isNotNull);
     expect(element.kind, ElementKind.GETTER);
     expect(element.displayName, 'a');
   }
 
   test_getTopLevelPropertyAccessor_defined_setter() async {
-    var path = _p('/test.dart');
-    var file = provider.newFile(path, r'''
+    var file = newFile('/test/lib/test.dart', content: r'''
 set a(_) {}
 ''');
     String uri = file.toUri().toString();
 
-    var element = await sessionHelper.getTopLevelPropertyAccessor(uri, 'a=');
+    var element = await helper.getTopLevelPropertyAccessor(uri, 'a=');
     expect(element, isNotNull);
     expect(element.kind, ElementKind.SETTER);
     expect(element.displayName, 'a');
   }
 
   test_getTopLevelPropertyAccessor_defined_variable() async {
-    var path = _p('/test.dart');
-    var file = provider.newFile(path, r'''
+    var file = newFile('/test/lib/test.dart', content: r'''
 int a;
 ''');
     String uri = file.toUri().toString();
 
-    var element = await sessionHelper.getTopLevelPropertyAccessor(uri, 'a');
+    var element = await helper.getTopLevelPropertyAccessor(uri, 'a');
     expect(element, isNotNull);
     expect(element.kind, ElementKind.GETTER);
     expect(element.displayName, 'a');
   }
 
   test_getTopLevelPropertyAccessor_exported() async {
-    var a = _p('/a.dart');
-    var b = _p('/b.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 int a;
 ''');
-    var bFile = provider.newFile(b, r'''
+    var bFile = newFile('/test/lib/b.dart', content: r'''
 export 'a.dart';
 ''');
     String bUri = bFile.toUri().toString();
 
-    var element = await sessionHelper.getTopLevelPropertyAccessor(bUri, 'a');
+    var element = await helper.getTopLevelPropertyAccessor(bUri, 'a');
     expect(element, isNotNull);
     expect(element.kind, ElementKind.GETTER);
     expect(element.displayName, 'a');
   }
 
   test_getTopLevelPropertyAccessor_imported() async {
-    var a = _p('/a.dart');
-    var b = _p('/b.dart');
-    provider.newFile(a, r'''
+    newFile('/test/lib/a.dart', content: r'''
 int a;
 ''');
-    var bFile = provider.newFile(b, r'''
+    var bFile = newFile('/test/lib/b.dart', content: r'''
 import 'a.dart';
 ''');
     String bUri = bFile.toUri().toString();
 
-    var element = await sessionHelper.getTopLevelPropertyAccessor(bUri, 'a');
+    var element = await helper.getTopLevelPropertyAccessor(bUri, 'a');
     expect(element, isNull);
   }
 
   test_getTopLevelPropertyAccessor_notDefined() async {
-    var path = _p('/test.dart');
-    var file = provider.newFile(path, r'''
+    var file = newFile('/test/lib/test.dart', content: r'''
 int a;
 ''');
     String uri = file.toUri().toString();
 
-    var element = await sessionHelper.getTopLevelPropertyAccessor(uri, 'b');
+    var element = await helper.getTopLevelPropertyAccessor(uri, 'b');
     expect(element, isNull);
   }
 
   test_getTopLevelPropertyAccessor_notPropertyAccessor() async {
-    var path = _p('/test.dart');
-    var file = provider.newFile(path, r'''
+    var file = newFile('/test/lib/test.dart', content: r'''
 int a() {}
 ''');
     String uri = file.toUri().toString();
 
-    var element = await sessionHelper.getTopLevelPropertyAccessor(uri, 'a');
+    var element = await helper.getTopLevelPropertyAccessor(uri, 'a');
     expect(element, isNull);
   }
-
-  /// Return the [provider] specific path for the given Posix [path].
-  String _p(String path) => provider.convertPath(path);
 }
diff --git a/pkg/analyzer/test/src/dart/analysis/session_test.dart b/pkg/analyzer/test/src/dart/analysis/session_test.dart
index a5b9b87..555c2ec 100644
--- a/pkg/analyzer/test/src/dart/analysis/session_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/session_test.dart
@@ -8,12 +8,11 @@
 import 'package:analyzer/src/dart/analysis/analysis_context_collection.dart';
 import 'package:analyzer/src/dart/analysis/session.dart';
 import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../../context/mock_sdk.dart';
-
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(AnalysisSessionImplTest);
@@ -74,32 +73,207 @@
     expect(library.getType('C'), isNull);
   }
 
-  test_getParsedAstSync() async {
+  test_getParsedLibrary() async {
     newFile(testPath, content: r'''
 class A {}
 class B {}
 ''');
 
-    var unitResult = session.getParsedAstSync(testPath);
-    expect(unitResult.session, session);
-    expect(unitResult.path, testPath);
-    expect(unitResult.uri, Uri.parse('package:test/test.dart'));
-    expect(unitResult.unit.declarations, hasLength(2));
+    var parsedLibrary = session.getParsedLibrary(testPath);
+    expect(parsedLibrary.session, session);
+    expect(parsedLibrary.path, testPath);
+    expect(parsedLibrary.uri, Uri.parse('package:test/test.dart'));
+
+    expect(parsedLibrary.units, hasLength(1));
+    {
+      var parsedUnit = parsedLibrary.units[0];
+      expect(parsedUnit.session, session);
+      expect(parsedUnit.path, testPath);
+      expect(parsedUnit.uri, Uri.parse('package:test/test.dart'));
+      expect(parsedUnit.unit.declarations, hasLength(2));
+    }
   }
 
-  test_getResolvedAst() async {
+  test_getParsedLibrary_getElementDeclaration_class() async {
     newFile(testPath, content: r'''
 class A {}
 class B {}
 ''');
 
-    var unitResult = await session.getResolvedAst(testPath);
+    var library = await session.getLibraryByUri('package:test/test.dart');
+    var parsedLibrary = session.getParsedLibrary(testPath);
+
+    var element = library.getType('A');
+    var declaration = parsedLibrary.getElementDeclaration(element);
+    ClassDeclaration node = declaration.node;
+    expect(node.name.name, 'A');
+    expect(node.offset, 0);
+    expect(node.length, 10);
+  }
+
+  test_getParsedLibrary_getElementDeclaration_notThisLibrary() async {
+    newFile(testPath, content: '');
+
+    var parsedLibrary = await session.getParsedLibrary(testPath);
+
+    var typeProvider = await session.typeProvider;
+    var intClass = typeProvider.intType.element;
+
+    expect(() {
+      parsedLibrary.getElementDeclaration(intClass);
+    }, throwsArgumentError);
+  }
+
+  test_getParsedLibrary_getElementDeclaration_synthetic() async {
+    newFile(testPath, content: r'''
+int foo = 0;
+''');
+
+    var parsedLibrary = session.getParsedLibrary(testPath);
+
+    var unitElement = (await session.getUnitElement(testPath)).element;
+    var fooElement = unitElement.topLevelVariables[0];
+    expect(fooElement.name, 'foo');
+
+    // We can get the variable element declaration.
+    var fooDeclaration = parsedLibrary.getElementDeclaration(fooElement);
+    VariableDeclaration fooNode = fooDeclaration.node;
+    expect(fooNode.name.name, 'foo');
+    expect(fooNode.offset, 4);
+    expect(fooNode.length, 7);
+    expect(fooNode.name.staticElement, isNull);
+
+    // Synthetic elements don't have nodes.
+    expect(parsedLibrary.getElementDeclaration(fooElement.getter), isNull);
+    expect(parsedLibrary.getElementDeclaration(fooElement.setter), isNull);
+  }
+
+  test_getParsedLibrary_invalidPartUri() async {
+    newFile(testPath, content: r'''
+part 'a.dart';
+part ':[invalid uri].dart';
+part 'c.dart';
+''');
+
+    var parsedLibrary = session.getParsedLibrary(testPath);
+
+    expect(parsedLibrary.units, hasLength(3));
+    expect(
+      parsedLibrary.units[0].path,
+      convertPath('/home/test/lib/test.dart'),
+    );
+    expect(
+      parsedLibrary.units[1].path,
+      convertPath('/home/test/lib/a.dart'),
+    );
+    expect(
+      parsedLibrary.units[2].path,
+      convertPath('/home/test/lib/c.dart'),
+    );
+  }
+
+  test_getParsedLibrary_notLibrary() async {
+    newFile(testPath, content: 'part of "a.dart";');
+
+    expect(() {
+      session.getParsedLibrary(testPath);
+    }, throwsArgumentError);
+  }
+
+  test_getParsedLibrary_parts() async {
+    var a = convertPath('/home/test/lib/a.dart');
+    var b = convertPath('/home/test/lib/b.dart');
+    var c = convertPath('/home/test/lib/c.dart');
+
+    var aContent = r'''
+part 'b.dart';
+part 'c.dart';
+
+class A {}
+''';
+
+    var bContent = r'''
+part of 'a.dart';
+
+class B1 {}
+class B2 {}
+''';
+
+    var cContent = r'''
+part of 'a.dart';
+
+class C1 {}
+class C2 {}
+class C3 {}
+''';
+
+    newFile(a, content: aContent);
+    newFile(b, content: bContent);
+    newFile(c, content: cContent);
+
+    var parsedLibrary = session.getParsedLibrary(a);
+    expect(parsedLibrary.path, a);
+    expect(parsedLibrary.uri, Uri.parse('package:test/a.dart'));
+    expect(parsedLibrary.units, hasLength(3));
+
+    {
+      var aUnit = parsedLibrary.units[0];
+      expect(aUnit.path, a);
+      expect(aUnit.uri, Uri.parse('package:test/a.dart'));
+      expect(aUnit.unit.declarations, hasLength(1));
+    }
+
+    {
+      var bUnit = parsedLibrary.units[1];
+      expect(bUnit.path, b);
+      expect(bUnit.uri, Uri.parse('package:test/b.dart'));
+      expect(bUnit.unit.declarations, hasLength(2));
+    }
+
+    {
+      var cUnit = parsedLibrary.units[2];
+      expect(cUnit.path, c);
+      expect(cUnit.uri, Uri.parse('package:test/c.dart'));
+      expect(cUnit.unit.declarations, hasLength(3));
+    }
+  }
+
+  test_getParsedLibraryByElement() async {
+    newFile(testPath, content: '');
+
+    var element = await session.getLibraryByUri('package:test/test.dart');
+
+    var parsedLibrary = session.getParsedLibraryByElement(element);
+    expect(parsedLibrary.session, session);
+    expect(parsedLibrary.path, testPath);
+    expect(parsedLibrary.uri, Uri.parse('package:test/test.dart'));
+    expect(parsedLibrary.units, hasLength(1));
+  }
+
+  test_getParsedLibraryByElement_differentSession() async {
+    newFile(testPath, content: '');
+
+    var element = await session.getLibraryByUri('package:test/test.dart');
+
+    var aaaSession =
+        contextCollection.contextFor(aaaContextPath).currentSession;
+
+    expect(() {
+      aaaSession.getParsedLibraryByElement(element);
+    }, throwsArgumentError);
+  }
+
+  test_getParsedUnit() async {
+    newFile(testPath, content: r'''
+class A {}
+class B {}
+''');
+
+    var unitResult = session.getParsedUnit(testPath);
     expect(unitResult.session, session);
     expect(unitResult.path, testPath);
     expect(unitResult.uri, Uri.parse('package:test/test.dart'));
     expect(unitResult.unit.declarations, hasLength(2));
-    expect(unitResult.typeProvider, isNotNull);
-    expect(unitResult.libraryElement, isNotNull);
   }
 
   test_getResolvedLibrary() async {
@@ -251,6 +425,34 @@
     expect(resolvedLibrary.units[0].unit.declaredElement, isNotNull);
   }
 
+  test_getResolvedLibraryByElement_differentSession() async {
+    newFile(testPath, content: '');
+
+    var element = await session.getLibraryByUri('package:test/test.dart');
+
+    var aaaSession =
+        contextCollection.contextFor(aaaContextPath).currentSession;
+
+    expect(() async {
+      await aaaSession.getResolvedLibraryByElement(element);
+    }, throwsArgumentError);
+  }
+
+  test_getResolvedUnit() async {
+    newFile(testPath, content: r'''
+class A {}
+class B {}
+''');
+
+    var unitResult = await session.getResolvedUnit(testPath);
+    expect(unitResult.session, session);
+    expect(unitResult.path, testPath);
+    expect(unitResult.uri, Uri.parse('package:test/test.dart'));
+    expect(unitResult.unit.declarations, hasLength(2));
+    expect(unitResult.typeProvider, isNotNull);
+    expect(unitResult.libraryElement, isNotNull);
+  }
+
   test_getSourceKind() async {
     newFile(testPath, content: 'class C {}');
 
diff --git a/pkg/analyzer/test/src/dart/analysis/uri_converter_test.dart b/pkg/analyzer/test/src/dart/analysis/uri_converter_test.dart
index f400cee..c7e291e 100644
--- a/pkg/analyzer/test/src/dart/analysis/uri_converter_test.dart
+++ b/pkg/analyzer/test/src/dart/analysis/uri_converter_test.dart
@@ -3,18 +3,16 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/context/context_root.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/uri_converter.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../../context/mock_sdk.dart';
-
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(DriverBasedUriConverterTest);
@@ -22,12 +20,10 @@
 }
 
 @reflectiveTest
-class DriverBasedUriConverterTest extends Object with ResourceProviderMixin {
+class DriverBasedUriConverterTest with ResourceProviderMixin {
   DriverBasedUriConverter uriConverter;
 
   void setUp() {
-    resourceProvider = new MemoryResourceProvider();
-
     Folder barFolder = newFolder('/packages/bar/lib');
     Folder fooFolder = newFolder('/packages/foo/lib');
 
diff --git a/pkg/analyzer/test/src/dart/ast/ast_test.dart b/pkg/analyzer/test/src/dart/ast/ast_test.dart
index 1bbecda..f0a6265 100644
--- a/pkg/analyzer/test/src/dart/ast/ast_test.dart
+++ b/pkg/analyzer/test/src/dart/ast/ast_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -6,7 +6,6 @@
 
 import 'package:analyzer/src/dart/ast/ast.dart';
 import 'package:analyzer/src/dart/ast/utilities.dart';
-import 'package:analyzer/src/generated/engine.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -472,102 +471,24 @@
 
   bool get enableNewAnalysisDriver => true;
 
-  void assertCanBeConst(String snippet, bool expectedResult) {
-    int index = testSource.indexOf(snippet);
-    expect(index >= 0, isTrue);
-    NodeLocator visitor = new NodeLocator(index);
-    AstNodeImpl node = visitor.searchWithin(testUnit);
-    node = node.getAncestor((node) => node is InstanceCreationExpressionImpl);
-    expect(node, isNotNull);
-    expect((node as InstanceCreationExpressionImpl).canBeConst(),
-        expectedResult ? isTrue : isFalse);
-  }
-
   void assertIsConst(String snippet, bool expectedResult) {
     int index = testSource.indexOf(snippet);
     expect(index >= 0, isTrue);
     NodeLocator visitor = new NodeLocator(index);
     AstNodeImpl node = visitor.searchWithin(testUnit);
-    node = node.getAncestor((node) => node is InstanceCreationExpressionImpl);
+    node = node.thisOrAncestorOfType<InstanceCreationExpressionImpl>();
     expect(node, isNotNull);
     expect((node as InstanceCreationExpressionImpl).isConst,
         expectedResult ? isTrue : isFalse);
   }
 
-  void enablePreviewDart2() {
-    resetWith(options: new AnalysisOptionsImpl()..previewDart2 = true);
-  }
-
   Future<void> resolve(String source) async {
     testSource = source;
     testUnit = await resolveSource2('/test.dart', source);
   }
 
-  void test_canBeConst_false_argument_invocation() async {
-    enablePreviewDart2();
-    await resolve('''
-class A {}
-class B {
-  const B(A a);
-}
-A f() => A();
-B g() => B(f());
-''');
-    assertCanBeConst("B(f", false);
-  }
-
-  void test_canBeConst_false_argument_invocationInList() async {
-    enablePreviewDart2();
-    await resolve('''
-class A {}
-class B {
-  const B(a);
-}
-A f() => A();
-B g() => B([f()]);
-''');
-    assertCanBeConst("B([", false);
-  }
-
-  void test_canBeConst_false_argument_nonConstConstructor() async {
-    enablePreviewDart2();
-    await resolve('''
-class A {}
-class B {
-  const B(A a);
-}
-B f() => B(A());
-''');
-    assertCanBeConst("B(A(", false);
-  }
-
-  void test_canBeConst_false_nonConstConstructor() async {
-    enablePreviewDart2();
-    await resolve('''
-class A {}
-A f() => A();
-''');
-    assertCanBeConst("A(", false);
-  }
-
-  @failingTest
-  void test_canBeConst_true_argument_constConstructor() async {
-    enablePreviewDart2();
-    await resolve('''
-class A {
-  const A();
-}
-class B {
-  const B(A a);
-}
-B f() => B(A());
-''');
-    assertCanBeConst("B(A(", true);
-  }
-
   void
       test_isConst_notInContext_constructor_const_constParam_identifier() async {
-    enablePreviewDart2();
     await resolve('''
 var v = C(C.a);
 class C {
@@ -580,7 +501,6 @@
   }
 
   void test_isConst_notInContext_constructor_const_constParam_named() async {
-    enablePreviewDart2();
     await resolve('''
 var v = C(c: C());
 class C {
@@ -592,7 +512,6 @@
 
   void
       test_isConst_notInContext_constructor_const_constParam_named_parens() async {
-    enablePreviewDart2();
     await resolve('''
 var v = C(c: (C()));
 class C {
@@ -603,7 +522,6 @@
   }
 
   void test_isConst_notInContext_constructor_const_constParam_parens() async {
-    enablePreviewDart2();
     await resolve('''
 var v = C( (C.c()) );
 class C {
@@ -615,7 +533,6 @@
   }
 
   void test_isConst_notInContext_constructor_const_generic_named() async {
-    enablePreviewDart2();
     await resolve('''
 f() => <Object>[C<int>.n()];
 class C<E> {
@@ -627,7 +544,6 @@
 
   void
       test_isConst_notInContext_constructor_const_generic_named_prefixed() async {
-    enablePreviewDart2();
     addNamedSource('/c.dart', '''
 class C<E> {
   const C.n();
@@ -641,7 +557,6 @@
   }
 
   void test_isConst_notInContext_constructor_const_generic_unnamed() async {
-    enablePreviewDart2();
     await resolve('''
 f() => <Object>[C<int>()];
 class C<E> {
@@ -653,7 +568,6 @@
 
   void
       test_isConst_notInContext_constructor_const_generic_unnamed_prefixed() async {
-    enablePreviewDart2();
     addNamedSource('/c.dart', '''
 class C<E> {
   const C();
@@ -668,7 +582,6 @@
 
   void
       test_isConst_notInContext_constructor_const_nonConstParam_constructor() async {
-    enablePreviewDart2();
     await resolve('''
 f() {
   return A(B());
@@ -687,7 +600,6 @@
 
   void
       test_isConst_notInContext_constructor_const_nonConstParam_variable() async {
-    enablePreviewDart2();
     await resolve('''
 f(int i) => <Object>[C(i)];
 class C {
@@ -699,7 +611,6 @@
   }
 
   void test_isConst_notInContext_constructor_const_nonGeneric_named() async {
-    enablePreviewDart2();
     await resolve('''
 f() => <Object>[C.n()];
 class C<E> {
@@ -711,7 +622,6 @@
 
   void
       test_isConst_notInContext_constructor_const_nonGeneric_named_prefixed() async {
-    enablePreviewDart2();
     addNamedSource('/c.dart', '''
 class C {
   const C.n();
@@ -725,7 +635,6 @@
   }
 
   void test_isConst_notInContext_constructor_const_nonGeneric_unnamed() async {
-    enablePreviewDart2();
     await resolve('''
 f() => <Object>[C()];
 class C {
@@ -737,7 +646,6 @@
 
   void
       test_isConst_notInContext_constructor_const_nonGeneric_unnamed_prefixed() async {
-    enablePreviewDart2();
     addNamedSource('/c.dart', '''
 class C {
   const C();
@@ -751,7 +659,6 @@
   }
 
   void test_isConst_notInContext_constructor_nonConst() async {
-    enablePreviewDart2();
     await resolve('''
 f() => <Object>[C()];
 class C {
diff --git a/pkg/analyzer/test/src/dart/ast/utilities_test.dart b/pkg/analyzer/test/src/dart/ast/utilities_test.dart
index de28384..795c3da 100644
--- a/pkg/analyzer/test/src/dart/ast/utilities_test.dart
+++ b/pkg/analyzer/test/src/dart/ast/utilities_test.dart
@@ -805,7 +805,7 @@
   void test_visitPartDirective() {
     PartDirective fromNode = AstTestFactory.partDirective2("part.dart");
     LibraryElement element = new LibraryElementImpl.forNode(
-        null, AstTestFactory.libraryIdentifier2(["lib"]));
+        null, null, AstTestFactory.libraryIdentifier2(["lib"]));
     fromNode.element = element;
     PartDirective toNode = AstTestFactory.partDirective2("part.dart");
     ResolutionCopier.copyResolutionData(fromNode, toNode);
@@ -816,7 +816,7 @@
     PartOfDirective fromNode = AstTestFactory.partOfDirective(
         AstTestFactory.libraryIdentifier2(["lib"]));
     LibraryElement element = new LibraryElementImpl.forNode(
-        null, AstTestFactory.libraryIdentifier2(["lib"]));
+        null, null, AstTestFactory.libraryIdentifier2(["lib"]));
     fromNode.element = element;
     PartOfDirective toNode = AstTestFactory.partOfDirective(
         AstTestFactory.libraryIdentifier2(["lib"]));
diff --git a/pkg/analyzer/test/src/dart/constant/evaluation_test.dart b/pkg/analyzer/test/src/dart/constant/evaluation_test.dart
index 0a08cae..5fce676 100644
--- a/pkg/analyzer/test/src/dart/constant/evaluation_test.dart
+++ b/pkg/analyzer/test/src/dart/constant/evaluation_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -6,9 +6,12 @@
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/ast/token.dart';
+import 'package:analyzer/error/error.dart';
 import 'package:analyzer/error/listener.dart';
+import 'package:analyzer/src/dart/analysis/experiments.dart';
 import 'package:analyzer/src/error/codes.dart';
 import 'package:analyzer/src/generated/constant.dart';
+import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
@@ -29,7 +32,139 @@
 
 @reflectiveTest
 class ConstantVisitorTest extends ResolverTestCase {
-  test_visitBinaryExpression_questionQuestion_notNull_notNull() async {
+  test_visitAsExpression_instanceOfSameClass() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = const A();
+const b = a as A;
+class A {
+  const A();
+}
+''');
+    DartObjectImpl resultA = _evaluateConstant(compilationUnit, 'a',
+        experiments: [Experiments.constantUpdate2018Name]);
+    DartObjectImpl resultB = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(resultB, resultA);
+  }
+
+  test_visitAsExpression_instanceOfSubclass() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = const B();
+const b = a as A;
+class A {
+  const A();
+}
+class B extends A {
+  const B();
+}
+''');
+    DartObjectImpl resultA = _evaluateConstant(compilationUnit, 'a',
+        experiments: [Experiments.constantUpdate2018Name]);
+    DartObjectImpl resultB = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(resultB, resultA);
+  }
+
+  test_visitAsExpression_instanceOfSuperclass() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = const A();
+const b = a as B;
+class A {
+  const A();
+}
+class B extends A {
+  const B();
+}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        errorCodes: [CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION],
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result, isNull);
+  }
+
+  test_visitAsExpression_instanceOfUnrelatedClass() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = const A();
+const b = a as B;
+class A {
+  const A();
+}
+class B {
+  const B();
+}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        errorCodes: [CompileTimeErrorCode.CONST_EVAL_THROWS_EXCEPTION],
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result, isNull);
+  }
+
+  test_visitAsExpression_null() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = null;
+const b = a as A;
+class A {}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.nullType);
+  }
+
+  test_visitBinaryExpression_and_bool() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = false & true;
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+  }
+
+  test_visitBinaryExpression_and_int() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = 3 & 5;
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.intType);
+  }
+
+  test_visitBinaryExpression_and_mixed() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = 3 & false;
+''');
+    _evaluateConstant(compilationUnit, 'c',
+        errorCodes: [CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_INT],
+        experiments: [Experiments.constantUpdate2018Name]);
+  }
+
+  test_visitBinaryExpression_or_bool() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = false | true;
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+  }
+
+  test_visitBinaryExpression_or_int() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = 3 | 5;
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.intType);
+  }
+
+  test_visitBinaryExpression_or_mixed() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = 3 | false;
+''');
+    _evaluateConstant(compilationUnit, 'c',
+        errorCodes: [CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_INT],
+        experiments: [Experiments.constantUpdate2018Name]);
+  }
+
+  test_visitBinaryExpression_questionQuestion_eager_notNull_notNull() async {
     Expression left = AstTestFactory.string2('a');
     Expression right = AstTestFactory.string2('b');
     Expression expression = AstTestFactory.binaryExpression(
@@ -45,7 +180,7 @@
     errorListener.assertNoErrors();
   }
 
-  test_visitBinaryExpression_questionQuestion_null_notNull() async {
+  test_visitBinaryExpression_questionQuestion_eager_null_notNull() async {
     Expression left = AstTestFactory.nullLiteral();
     Expression right = AstTestFactory.string2('b');
     Expression expression = AstTestFactory.binaryExpression(
@@ -61,7 +196,7 @@
     errorListener.assertNoErrors();
   }
 
-  test_visitBinaryExpression_questionQuestion_null_null() async {
+  test_visitBinaryExpression_questionQuestion_eager_null_null() async {
     Expression left = AstTestFactory.nullLiteral();
     Expression right = AstTestFactory.nullLiteral();
     Expression expression = AstTestFactory.binaryExpression(
@@ -76,7 +211,84 @@
     errorListener.assertNoErrors();
   }
 
-  test_visitConditionalExpression_false() async {
+  test_visitBinaryExpression_questionQuestion_lazy_notNull_invalid() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = 'a' ?? new C();
+class C {}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.stringType);
+    expect(result.toStringValue(), 'a');
+  }
+
+  test_visitBinaryExpression_questionQuestion_lazy_notNull_notNull() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = 'a' ?? 'b';
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.stringType);
+    expect(result.toStringValue(), 'a');
+  }
+
+  test_visitBinaryExpression_questionQuestion_lazy_null_invalid() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = null ?? new C();
+class C {}
+''');
+    _evaluateConstant(compilationUnit, 'c',
+        errorCodes: [CompileTimeErrorCode.INVALID_CONSTANT],
+        experiments: [Experiments.constantUpdate2018Name]);
+  }
+
+  test_visitBinaryExpression_questionQuestion_lazy_null_notNull() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = null ?? 'b';
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.stringType);
+    expect(result.toStringValue(), 'b');
+  }
+
+  test_visitBinaryExpression_questionQuestion_lazy_null_null() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = null ?? null;
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.isNull, isTrue);
+  }
+
+  test_visitBinaryExpression_xor_bool() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = false ^ true;
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+  }
+
+  test_visitBinaryExpression_xor_int() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = 3 ^ 5;
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.intType);
+  }
+
+  test_visitBinaryExpression_xor_mixed() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = 3 ^ false;
+''');
+    _evaluateConstant(compilationUnit, 'c',
+        errorCodes: [CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL_INT],
+        experiments: [Experiments.constantUpdate2018Name]);
+  }
+
+  test_visitConditionalExpression_eager_false_int_int() async {
     Expression thenExpression = AstTestFactory.integer(1);
     Expression elseExpression = AstTestFactory.integer(0);
     ConditionalExpression expression = AstTestFactory.conditionalExpression(
@@ -88,7 +300,7 @@
     errorListener.assertNoErrors();
   }
 
-  test_visitConditionalExpression_nonBooleanCondition() async {
+  test_visitConditionalExpression_eager_invalid_int_int() async {
     Expression thenExpression = AstTestFactory.integer(1);
     Expression elseExpression = AstTestFactory.integer(0);
     NullLiteral conditionExpression = AstTestFactory.nullLiteral();
@@ -103,7 +315,19 @@
         .assertErrorsWithCodes([CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL]);
   }
 
-  test_visitConditionalExpression_nonConstantElse() async {
+  test_visitConditionalExpression_eager_true_int_int() async {
+    Expression thenExpression = AstTestFactory.integer(1);
+    Expression elseExpression = AstTestFactory.integer(0);
+    ConditionalExpression expression = AstTestFactory.conditionalExpression(
+        AstTestFactory.booleanLiteral(true), thenExpression, elseExpression);
+    GatheringErrorListener errorListener = new GatheringErrorListener();
+    ErrorReporter errorReporter =
+        new ErrorReporter(errorListener, _dummySource());
+    _assertValue(1, _evaluate(expression, errorReporter));
+    errorListener.assertNoErrors();
+  }
+
+  test_visitConditionalExpression_eager_true_int_invalid() async {
     Expression thenExpression = AstTestFactory.integer(1);
     Expression elseExpression = AstTestFactory.identifier3("x");
     ConditionalExpression expression = AstTestFactory.conditionalExpression(
@@ -117,7 +341,7 @@
         .assertErrorsWithCodes([CompileTimeErrorCode.INVALID_CONSTANT]);
   }
 
-  test_visitConditionalExpression_nonConstantThen() async {
+  test_visitConditionalExpression_eager_true_invalid_int() async {
     Expression thenExpression = AstTestFactory.identifier3("x");
     Expression elseExpression = AstTestFactory.integer(0);
     ConditionalExpression expression = AstTestFactory.conditionalExpression(
@@ -131,16 +355,263 @@
         .assertErrorsWithCodes([CompileTimeErrorCode.INVALID_CONSTANT]);
   }
 
-  test_visitConditionalExpression_true() async {
-    Expression thenExpression = AstTestFactory.integer(1);
-    Expression elseExpression = AstTestFactory.integer(0);
-    ConditionalExpression expression = AstTestFactory.conditionalExpression(
-        AstTestFactory.booleanLiteral(true), thenExpression, elseExpression);
-    GatheringErrorListener errorListener = new GatheringErrorListener();
-    ErrorReporter errorReporter =
-        new ErrorReporter(errorListener, _dummySource());
-    _assertValue(1, _evaluate(expression, errorReporter));
-    errorListener.assertNoErrors();
+  test_visitConditionalExpression_lazy_false_int_int() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = false ? 1 : 0;
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.intType);
+    expect(result.toIntValue(), 0);
+  }
+
+  test_visitConditionalExpression_lazy_false_int_invalid() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = false ? 1 : new C();
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        errorCodes: [CompileTimeErrorCode.INVALID_CONSTANT],
+        experiments: [Experiments.constantUpdate2018Name]);
+  }
+
+  test_visitConditionalExpression_lazy_false_invalid_int() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = false ? new C() : 0;
+class C {}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.intType);
+    expect(result.toIntValue(), 0);
+  }
+
+  test_visitConditionalExpression_lazy_invalid_int_int() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = 3 ? 1 : 0;
+''');
+    _evaluateConstant(compilationUnit, 'c',
+        errorCodes: [CompileTimeErrorCode.CONST_EVAL_TYPE_BOOL],
+        experiments: [Experiments.constantUpdate2018Name]);
+  }
+
+  test_visitConditionalExpression_lazy_true_int_int() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = true ? 1 : 0;
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.intType);
+    expect(result.toIntValue(), 1);
+  }
+
+  test_visitConditionalExpression_lazy_true_int_invalid() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = true ? 1 : new C();
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'c',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.intType);
+    expect(result.toIntValue(), 1);
+  }
+
+  test_visitConditionalExpression_lazy_true_invalid_int() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const c = true ? new C() : 0;
+class C {}
+''');
+    _evaluateConstant(compilationUnit, 'c',
+        errorCodes: [CompileTimeErrorCode.INVALID_CONSTANT],
+        experiments: [Experiments.constantUpdate2018Name]);
+  }
+
+  test_visitIsExpression_is_instanceOfSameClass() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = const A();
+const b = a is A;
+class A {
+  const A();
+}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+    expect(result.toBoolValue(), true);
+  }
+
+  test_visitIsExpression_is_instanceOfSubclass() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = const B();
+const b = a is A;
+class A {
+  const A();
+}
+class B extends A {
+  const B();
+}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+    expect(result.toBoolValue(), true);
+  }
+
+  test_visitIsExpression_is_instanceOfSuperclass() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = const A();
+const b = a is B;
+class A {
+  const A();
+}
+class B extends A {
+  const B();
+}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+    expect(result.toBoolValue(), false);
+  }
+
+  test_visitIsExpression_is_instanceOfUnrelatedClass() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = const A();
+const b = a is B;
+class A {
+  const A();
+}
+class B {
+  const B();
+}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+    expect(result.toBoolValue(), false);
+  }
+
+  test_visitIsExpression_is_null() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = null;
+const b = a is A;
+class A {}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+    expect(result.toBoolValue(), false);
+  }
+
+  test_visitIsExpression_is_null_dynamic() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = null;
+const b = a is dynamic;
+class A {}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+    expect(result.toBoolValue(), true);
+  }
+
+  test_visitIsExpression_is_null_null() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = null;
+const b = a is Null;
+class A {}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+    expect(result.toBoolValue(), true);
+  }
+
+  test_visitIsExpression_is_null_object() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = null;
+const b = a is Object;
+class A {}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+    expect(result.toBoolValue(), true);
+  }
+
+  test_visitIsExpression_isNot_instanceOfSameClass() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = const A();
+const b = a is! A;
+class A {
+  const A();
+}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+    expect(result.toBoolValue(), false);
+  }
+
+  test_visitIsExpression_isNot_instanceOfSubclass() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = const B();
+const b = a is! A;
+class A {
+  const A();
+}
+class B extends A {
+  const B();
+}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+    expect(result.toBoolValue(), false);
+  }
+
+  test_visitIsExpression_isNot_instanceOfSuperclass() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = const A();
+const b = a is! B;
+class A {
+  const A();
+}
+class B extends A {
+  const B();
+}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+    expect(result.toBoolValue(), true);
+  }
+
+  test_visitIsExpression_isNot_instanceOfUnrelatedClass() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = const A();
+const b = a is! B;
+class A {
+  const A();
+}
+class B {
+  const B();
+}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+    expect(result.toBoolValue(), true);
+  }
+
+  test_visitIsExpression_isNot_null() async {
+    CompilationUnit compilationUnit = await resolveSource('''
+const a = null;
+const b = a is! A;
+class A {}
+''');
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'b',
+        experiments: [Experiments.constantUpdate2018Name]);
+    expect(result.type, typeProvider.boolType);
+    expect(result.toBoolValue(), true);
   }
 
   test_visitSimpleIdentifier_className() async {
@@ -148,7 +619,7 @@
 const a = C;
 class C {}
 ''');
-    DartObjectImpl result = _evaluateConstant(compilationUnit, 'a', null);
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'a');
     expect(result.type, typeProvider.typeType);
     expect(result.toTypeValue().name, 'C');
   }
@@ -157,7 +628,7 @@
     CompilationUnit compilationUnit = await resolveSource('''
 const a = dynamic;
 ''');
-    DartObjectImpl result = _evaluateConstant(compilationUnit, 'a', null);
+    DartObjectImpl result = _evaluateConstant(compilationUnit, 'a');
     expect(result.type, typeProvider.typeType);
     expect(result.toTypeValue(), typeProvider.dynamicType);
   }
@@ -170,7 +641,10 @@
     DartObjectImpl six =
         new DartObjectImpl(typeProvider.intType, new IntState(6));
     environment["b"] = six;
-    _assertValue(6, _evaluateConstant(compilationUnit, "a", environment));
+    _assertValue(
+        6,
+        _evaluateConstant(compilationUnit, "a",
+            lexicalEnvironment: environment));
   }
 
   test_visitSimpleIdentifier_notInEnvironment() async {
@@ -181,14 +655,17 @@
     DartObjectImpl six =
         new DartObjectImpl(typeProvider.intType, new IntState(6));
     environment["c"] = six;
-    _assertValue(3, _evaluateConstant(compilationUnit, "a", environment));
+    _assertValue(
+        3,
+        _evaluateConstant(compilationUnit, "a",
+            lexicalEnvironment: environment));
   }
 
   test_visitSimpleIdentifier_withoutEnvironment() async {
     CompilationUnit compilationUnit = await resolveSource(r'''
 const a = b;
 const b = 3;''');
-    _assertValue(3, _evaluateConstant(compilationUnit, "a", null));
+    _assertValue(3, _evaluateConstant(compilationUnit, "a"));
   }
 
   void _assertValue(int expectedValue, DartObjectImpl result) {
@@ -211,19 +688,32 @@
   }
 
   DartObjectImpl _evaluateConstant(CompilationUnit compilationUnit, String name,
-      Map<String, DartObjectImpl> lexicalEnvironment) {
+      {List<ErrorCode> errorCodes,
+      List<String> experiments,
+      Map<String, DartObjectImpl> lexicalEnvironment}) {
     Source source =
         resolutionMap.elementDeclaredByCompilationUnit(compilationUnit).source;
     Expression expression =
         findTopLevelConstantExpression(compilationUnit, name);
+
+    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
+    if (experiments != null) {
+      options..enabledExperiments = experiments;
+    }
+
     GatheringErrorListener errorListener = new GatheringErrorListener();
     ErrorReporter errorReporter = new ErrorReporter(errorListener, source);
+
     DartObjectImpl result = expression.accept(new ConstantVisitor(
         new ConstantEvaluationEngine(typeProvider, new DeclaredVariables(),
-            typeSystem: typeSystem),
+            experiments: new Experiments(options), typeSystem: typeSystem),
         errorReporter,
         lexicalEnvironment: lexicalEnvironment));
-    errorListener.assertNoErrors();
+    if (errorCodes == null) {
+      errorListener.assertNoErrors();
+    } else {
+      errorListener.assertErrorsWithCodes(errorCodes);
+    }
     return result;
   }
 }
diff --git a/pkg/analyzer/test/src/dart/constant/value_test.dart b/pkg/analyzer/test/src/dart/constant/value_test.dart
index 1883704..6825e19 100644
--- a/pkg/analyzer/test/src/dart/constant/value_test.dart
+++ b/pkg/analyzer/test/src/dart/constant/value_test.dart
@@ -94,27 +94,27 @@
   }
 
   void test_bitAnd_knownInt_knownInt() {
-    _assertBitAnd(_intValue(2), _intValue(6), _intValue(3));
+    _assertEagerAnd(_intValue(2), _intValue(6), _intValue(3));
   }
 
   void test_bitAnd_knownInt_knownString() {
-    _assertBitAnd(null, _intValue(6), _stringValue("3"));
+    _assertEagerAnd(null, _intValue(6), _stringValue("3"));
   }
 
   void test_bitAnd_knownInt_unknownInt() {
-    _assertBitAnd(_intValue(null), _intValue(6), _intValue(null));
+    _assertEagerAnd(_intValue(null), _intValue(6), _intValue(null));
   }
 
   void test_bitAnd_knownString_knownInt() {
-    _assertBitAnd(null, _stringValue("6"), _intValue(3));
+    _assertEagerAnd(null, _stringValue("6"), _intValue(3));
   }
 
   void test_bitAnd_unknownInt_knownInt() {
-    _assertBitAnd(_intValue(null), _intValue(null), _intValue(3));
+    _assertEagerAnd(_intValue(null), _intValue(null), _intValue(3));
   }
 
   void test_bitAnd_unknownInt_unknownInt() {
-    _assertBitAnd(_intValue(null), _intValue(null), _intValue(null));
+    _assertEagerAnd(_intValue(null), _intValue(null), _intValue(null));
   }
 
   void test_bitNot_knownInt() {
@@ -130,51 +130,51 @@
   }
 
   void test_bitOr_knownInt_knownInt() {
-    _assertBitOr(_intValue(7), _intValue(6), _intValue(3));
+    _assertEagerOr(_intValue(7), _intValue(6), _intValue(3));
   }
 
   void test_bitOr_knownInt_knownString() {
-    _assertBitOr(null, _intValue(6), _stringValue("3"));
+    _assertEagerOr(null, _intValue(6), _stringValue("3"));
   }
 
   void test_bitOr_knownInt_unknownInt() {
-    _assertBitOr(_intValue(null), _intValue(6), _intValue(null));
+    _assertEagerOr(_intValue(null), _intValue(6), _intValue(null));
   }
 
   void test_bitOr_knownString_knownInt() {
-    _assertBitOr(null, _stringValue("6"), _intValue(3));
+    _assertEagerOr(null, _stringValue("6"), _intValue(3));
   }
 
   void test_bitOr_unknownInt_knownInt() {
-    _assertBitOr(_intValue(null), _intValue(null), _intValue(3));
+    _assertEagerOr(_intValue(null), _intValue(null), _intValue(3));
   }
 
   void test_bitOr_unknownInt_unknownInt() {
-    _assertBitOr(_intValue(null), _intValue(null), _intValue(null));
+    _assertEagerOr(_intValue(null), _intValue(null), _intValue(null));
   }
 
   void test_bitXor_knownInt_knownInt() {
-    _assertBitXor(_intValue(5), _intValue(6), _intValue(3));
+    _assertEagerXor(_intValue(5), _intValue(6), _intValue(3));
   }
 
   void test_bitXor_knownInt_knownString() {
-    _assertBitXor(null, _intValue(6), _stringValue("3"));
+    _assertEagerXor(null, _intValue(6), _stringValue("3"));
   }
 
   void test_bitXor_knownInt_unknownInt() {
-    _assertBitXor(_intValue(null), _intValue(6), _intValue(null));
+    _assertEagerXor(_intValue(null), _intValue(6), _intValue(null));
   }
 
   void test_bitXor_knownString_knownInt() {
-    _assertBitXor(null, _stringValue("6"), _intValue(3));
+    _assertEagerXor(null, _stringValue("6"), _intValue(3));
   }
 
   void test_bitXor_unknownInt_knownInt() {
-    _assertBitXor(_intValue(null), _intValue(null), _intValue(3));
+    _assertEagerXor(_intValue(null), _intValue(null), _intValue(3));
   }
 
   void test_bitXor_unknownInt_unknownInt() {
-    _assertBitXor(_intValue(null), _intValue(null), _intValue(null));
+    _assertEagerXor(_intValue(null), _intValue(null), _intValue(null));
   }
 
   void test_concatenate_knownInt_knownString() {
@@ -418,6 +418,20 @@
     expect(_nullValue().isNull, isTrue);
   }
 
+  void test_getValue_set_empty() {
+    Object result = _setValue().toSetValue();
+    _assertInstanceOfObjectArray(result);
+    Set<Object> set = result as Set<Object>;
+    expect(set, hasLength(0));
+  }
+
+  void test_getValue_set_valid() {
+    Object result = _setValue(new Set.from([_intValue(23)])).toSetValue();
+    _assertInstanceOfObjectArray(result);
+    Set<Object> set = result as Set<Object>;
+    expect(set, hasLength(1));
+  }
+
   void test_getValue_string_known() {
     String value = "twenty-three";
     expect(_stringValue(value).toStringValue(), value);
@@ -958,65 +972,63 @@
   }
 
   void test_logicalAnd_false_false() {
-    _assertLogicalAnd(_boolValue(false), _boolValue(false), _boolValue(false));
+    _assertLazyAnd(_boolValue(false), _boolValue(false), _boolValue(false));
   }
 
   void test_logicalAnd_false_null() {
-    _assertLogicalAnd(_boolValue(false), _boolValue(false), _nullValue());
+    _assertLazyAnd(_boolValue(false), _boolValue(false), _nullValue());
   }
 
   void test_logicalAnd_false_string() {
-    _assertLogicalAnd(
-        _boolValue(false), _boolValue(false), _stringValue("false"));
+    _assertLazyAnd(_boolValue(false), _boolValue(false), _stringValue("false"));
   }
 
   void test_logicalAnd_false_true() {
-    _assertLogicalAnd(_boolValue(false), _boolValue(false), _boolValue(true));
+    _assertLazyAnd(_boolValue(false), _boolValue(false), _boolValue(true));
   }
 
   void test_logicalAnd_null_false() {
     expect(() {
-      _assertLogicalAnd(_boolValue(false), _nullValue(), _boolValue(false));
+      _assertLazyAnd(_boolValue(false), _nullValue(), _boolValue(false));
     }, throwsEvaluationException);
   }
 
   void test_logicalAnd_null_true() {
     expect(() {
-      _assertLogicalAnd(_boolValue(false), _nullValue(), _boolValue(true));
+      _assertLazyAnd(_boolValue(false), _nullValue(), _boolValue(true));
     }, throwsEvaluationException);
   }
 
   void test_logicalAnd_string_false() {
     expect(() {
-      _assertLogicalAnd(
+      _assertLazyAnd(
           _boolValue(false), _stringValue("true"), _boolValue(false));
     }, throwsEvaluationException);
   }
 
   void test_logicalAnd_string_true() {
     expect(() {
-      _assertLogicalAnd(
+      _assertLazyAnd(
           _boolValue(false), _stringValue("false"), _boolValue(true));
     }, throwsEvaluationException);
   }
 
   void test_logicalAnd_true_false() {
-    _assertLogicalAnd(_boolValue(false), _boolValue(true), _boolValue(false));
+    _assertLazyAnd(_boolValue(false), _boolValue(true), _boolValue(false));
   }
 
   void test_logicalAnd_true_null() {
-    _assertLogicalAnd(null, _boolValue(true), _nullValue());
+    _assertLazyAnd(null, _boolValue(true), _nullValue());
   }
 
   void test_logicalAnd_true_string() {
     expect(() {
-      _assertLogicalAnd(
-          _boolValue(false), _boolValue(true), _stringValue("true"));
+      _assertLazyAnd(_boolValue(false), _boolValue(true), _stringValue("true"));
     }, throwsEvaluationException);
   }
 
   void test_logicalAnd_true_true() {
-    _assertLogicalAnd(_boolValue(true), _boolValue(true), _boolValue(true));
+    _assertLazyAnd(_boolValue(true), _boolValue(true), _boolValue(true));
   }
 
   void test_logicalNot_false() {
@@ -1042,64 +1054,62 @@
   }
 
   void test_logicalOr_false_false() {
-    _assertLogicalOr(_boolValue(false), _boolValue(false), _boolValue(false));
+    _assertLazyOr(_boolValue(false), _boolValue(false), _boolValue(false));
   }
 
   void test_logicalOr_false_null() {
-    _assertLogicalOr(null, _boolValue(false), _nullValue());
+    _assertLazyOr(null, _boolValue(false), _nullValue());
   }
 
   void test_logicalOr_false_string() {
     expect(() {
-      _assertLogicalOr(
+      _assertLazyOr(
           _boolValue(false), _boolValue(false), _stringValue("false"));
     }, throwsEvaluationException);
   }
 
   void test_logicalOr_false_true() {
-    _assertLogicalOr(_boolValue(true), _boolValue(false), _boolValue(true));
+    _assertLazyOr(_boolValue(true), _boolValue(false), _boolValue(true));
   }
 
   void test_logicalOr_null_false() {
     expect(() {
-      _assertLogicalOr(_boolValue(false), _nullValue(), _boolValue(false));
+      _assertLazyOr(_boolValue(false), _nullValue(), _boolValue(false));
     }, throwsEvaluationException);
   }
 
   void test_logicalOr_null_true() {
     expect(() {
-      _assertLogicalOr(_boolValue(true), _nullValue(), _boolValue(true));
+      _assertLazyOr(_boolValue(true), _nullValue(), _boolValue(true));
     }, throwsEvaluationException);
   }
 
   void test_logicalOr_string_false() {
     expect(() {
-      _assertLogicalOr(
-          _boolValue(false), _stringValue("true"), _boolValue(false));
+      _assertLazyOr(_boolValue(false), _stringValue("true"), _boolValue(false));
     }, throwsEvaluationException);
   }
 
   void test_logicalOr_string_true() {
     expect(() {
-      _assertLogicalOr(
-          _boolValue(true), _stringValue("false"), _boolValue(true));
+      _assertLazyOr(_boolValue(true), _stringValue("false"), _boolValue(true));
     }, throwsEvaluationException);
   }
 
   void test_logicalOr_true_false() {
-    _assertLogicalOr(_boolValue(true), _boolValue(true), _boolValue(false));
+    _assertLazyOr(_boolValue(true), _boolValue(true), _boolValue(false));
   }
 
   void test_logicalOr_true_null() {
-    _assertLogicalOr(_boolValue(true), _boolValue(true), _nullValue());
+    _assertLazyOr(_boolValue(true), _boolValue(true), _nullValue());
   }
 
   void test_logicalOr_true_string() {
-    _assertLogicalOr(_boolValue(true), _boolValue(true), _stringValue("true"));
+    _assertLazyOr(_boolValue(true), _boolValue(true), _stringValue("true"));
   }
 
   void test_logicalOr_true_true() {
-    _assertLogicalOr(_boolValue(true), _boolValue(true), _boolValue(true));
+    _assertLazyOr(_boolValue(true), _boolValue(true), _boolValue(true));
   }
 
   void test_minus_knownDouble_knownDouble() {
@@ -1480,24 +1490,6 @@
   }
 
   /**
-   * Assert that the result of bit-anding the [left] and [right] operands is the
-   * [expected] value, or that the operation throws an exception if the expected
-   * value is `null`.
-   */
-  void _assertBitAnd(
-      DartObjectImpl expected, DartObjectImpl left, DartObjectImpl right) {
-    if (expected == null) {
-      expect(() {
-        left.bitAnd(_typeProvider, right);
-      }, throwsEvaluationException);
-    } else {
-      DartObjectImpl result = left.bitAnd(_typeProvider, right);
-      expect(result, isNotNull);
-      expect(result, expected);
-    }
-  }
-
-  /**
    * Assert that the bit-not of the [operand] is the [expected] value, or that
    * the operation throws an exception if the expected value is `null`.
    */
@@ -1514,42 +1506,6 @@
   }
 
   /**
-   * Assert that the result of bit-oring the [left] and [right] operands is the
-   * [expected] value, or that the operation throws an exception if the expected
-   * value is `null`.
-   */
-  void _assertBitOr(
-      DartObjectImpl expected, DartObjectImpl left, DartObjectImpl right) {
-    if (expected == null) {
-      expect(() {
-        left.bitOr(_typeProvider, right);
-      }, throwsEvaluationException);
-    } else {
-      DartObjectImpl result = left.bitOr(_typeProvider, right);
-      expect(result, isNotNull);
-      expect(result, expected);
-    }
-  }
-
-  /**
-   * Assert that the result of bit-xoring the [left] and [right] operands is the
-   * [expected] value, or that the operation throws an exception if the expected
-   * value is `null`.
-   */
-  void _assertBitXor(
-      DartObjectImpl expected, DartObjectImpl left, DartObjectImpl right) {
-    if (expected == null) {
-      expect(() {
-        left.bitXor(_typeProvider, right);
-      }, throwsEvaluationException);
-    } else {
-      DartObjectImpl result = left.bitXor(_typeProvider, right);
-      expect(result, isNotNull);
-      expect(result, expected);
-    }
-  }
-
-  /**
    * Assert that the result of concatenating the [left] and [right] operands is
    * the [expected] value, or that the operation throws an exception if the
    * expected value is `null`.
@@ -1586,6 +1542,60 @@
   }
 
   /**
+   * Assert that the result of bit-anding the [left] and [right] operands is the
+   * [expected] value, or that the operation throws an exception if the expected
+   * value is `null`.
+   */
+  void _assertEagerAnd(
+      DartObjectImpl expected, DartObjectImpl left, DartObjectImpl right) {
+    if (expected == null) {
+      expect(() {
+        left.eagerAnd(_typeProvider, right, false);
+      }, throwsEvaluationException);
+    } else {
+      DartObjectImpl result = left.eagerAnd(_typeProvider, right, false);
+      expect(result, isNotNull);
+      expect(result, expected);
+    }
+  }
+
+  /**
+   * Assert that the result of bit-oring the [left] and [right] operands is the
+   * [expected] value, or that the operation throws an exception if the expected
+   * value is `null`.
+   */
+  void _assertEagerOr(
+      DartObjectImpl expected, DartObjectImpl left, DartObjectImpl right) {
+    if (expected == null) {
+      expect(() {
+        left.eagerOr(_typeProvider, right, false);
+      }, throwsEvaluationException);
+    } else {
+      DartObjectImpl result = left.eagerOr(_typeProvider, right, false);
+      expect(result, isNotNull);
+      expect(result, expected);
+    }
+  }
+
+  /**
+   * Assert that the result of bit-xoring the [left] and [right] operands is the
+   * [expected] value, or that the operation throws an exception if the expected
+   * value is `null`.
+   */
+  void _assertEagerXor(
+      DartObjectImpl expected, DartObjectImpl left, DartObjectImpl right) {
+    if (expected == null) {
+      expect(() {
+        left.eagerXor(_typeProvider, right, false);
+      }, throwsEvaluationException);
+    } else {
+      DartObjectImpl result = left.eagerXor(_typeProvider, right, false);
+      expect(result, isNotNull);
+      expect(result, expected);
+    }
+  }
+
+  /**
    * Assert that the result of comparing the [left] and [right] operands for
    * equality is the [expected] value, or that the operation throws an exception
    * if the expected value is `null`.
@@ -1673,6 +1683,42 @@
   }
 
   /**
+   * Assert that the result of logical-anding the [left] and [right] operands is
+   * the [expected] value, or that the operation throws an exception if the
+   * expected value is `null`.
+   */
+  void _assertLazyAnd(
+      DartObjectImpl expected, DartObjectImpl left, DartObjectImpl right) {
+    if (expected == null) {
+      expect(() {
+        left.lazyAnd(_typeProvider, () => right);
+      }, throwsEvaluationException);
+    } else {
+      DartObjectImpl result = left.lazyAnd(_typeProvider, () => right);
+      expect(result, isNotNull);
+      expect(result, expected);
+    }
+  }
+
+  /**
+   * Assert that the result of logical-oring the [left] and [right] operands is
+   * the [expected] value, or that the operation throws an exception if the
+   * expected value is `null`.
+   */
+  void _assertLazyOr(
+      DartObjectImpl expected, DartObjectImpl left, DartObjectImpl right) {
+    if (expected == null) {
+      expect(() {
+        left.lazyOr(_typeProvider, () => right);
+      }, throwsEvaluationException);
+    } else {
+      DartObjectImpl result = left.lazyOr(_typeProvider, () => right);
+      expect(result, isNotNull);
+      expect(result, expected);
+    }
+  }
+
+  /**
    * Assert that the result of comparing the [left] and [right] operands is the
    * [expected] value, or that the operation throws an exception if the expected
    * value is `null`.
@@ -1709,24 +1755,6 @@
   }
 
   /**
-   * Assert that the result of logical-anding the [left] and [right] operands is
-   * the [expected] value, or that the operation throws an exception if the
-   * expected value is `null`.
-   */
-  void _assertLogicalAnd(
-      DartObjectImpl expected, DartObjectImpl left, DartObjectImpl right) {
-    if (expected == null) {
-      expect(() {
-        left.logicalAnd(_typeProvider, () => right);
-      }, throwsEvaluationException);
-    } else {
-      DartObjectImpl result = left.logicalAnd(_typeProvider, () => right);
-      expect(result, isNotNull);
-      expect(result, expected);
-    }
-  }
-
-  /**
    * Assert that the logical-not of the [operand] is the [expected] value, or
    * that the operation throws an exception if the expected value is `null`.
    */
@@ -1743,24 +1771,6 @@
   }
 
   /**
-   * Assert that the result of logical-oring the [left] and [right] operands is
-   * the [expected] value, or that the operation throws an exception if the
-   * expected value is `null`.
-   */
-  void _assertLogicalOr(
-      DartObjectImpl expected, DartObjectImpl left, DartObjectImpl right) {
-    if (expected == null) {
-      expect(() {
-        left.logicalOr(_typeProvider, () => right);
-      }, throwsEvaluationException);
-    } else {
-      DartObjectImpl result = left.logicalOr(_typeProvider, () => right);
-      expect(result, isNotNull);
-      expect(result, expected);
-    }
-  }
-
-  /**
    * Assert that the result of subtracting the [left] and [right] operands is
    * the [expected] value, or that the operation throws an exception if the
    * expected value is `null`.
@@ -1975,6 +1985,11 @@
     return new DartObjectImpl(_typeProvider.nullType, NumState.UNKNOWN_VALUE);
   }
 
+  DartObjectImpl _setValue([Set<DartObjectImpl> elements]) {
+    return new DartObjectImpl(_typeProvider.setType,
+        new SetState(elements ?? new Set<DartObjectImpl>()));
+  }
+
   DartObjectImpl _stringValue(String value) {
     if (value == null) {
       return new DartObjectImpl(
diff --git a/pkg/analyzer/test/src/dart/element/element_test.dart b/pkg/analyzer/test/src/dart/element/element_test.dart
index 3a0bc36..dbebb31 100644
--- a/pkg/analyzer/test/src/dart/element/element_test.dart
+++ b/pkg/analyzer/test/src/dart/element/element_test.dart
@@ -47,6 +47,7 @@
 
 @reflectiveTest
 class ClassElementImplTest extends EngineTestCase {
+  @deprecated
   void test_computeNode_ClassDeclaration() {
     AnalysisContextHelper contextHelper = new AnalysisContextHelper();
     AnalysisContext context = contextHelper.context;
@@ -100,6 +101,7 @@
     }
   }
 
+  @deprecated
   void test_computeNode_ClassTypeAlias() {
     AnalysisContextHelper contextHelper = new AnalysisContextHelper();
     AnalysisContext context = contextHelper.context;
@@ -130,8 +132,8 @@
         new TestElementResynthesizer(context, {location: classA});
     ClassElementHandle classAHandle =
         new ClassElementHandle(resynthesizer, location);
-    ClassElementImpl classB =
-        ElementFactory.classElement("B", new InterfaceTypeImpl(classAHandle));
+    ClassElementImpl classB = new ClassElementImpl('B', 0)
+      ..supertype = new InterfaceTypeImpl(classAHandle);
     classB.mixinApplication = true;
 
     expect(classB.constructors, hasLength(1));
@@ -1194,6 +1196,7 @@
 
 @reflectiveTest
 class FieldElementImplTest extends EngineTestCase {
+  @deprecated
   void test_computeNode() {
     AnalysisContextHelper contextHelper = new AnalysisContextHelper();
     AnalysisContext context = contextHelper.context;
@@ -3692,8 +3695,8 @@
 class LibraryElementImplTest extends EngineTestCase {
   void test_creation() {
     expect(
-        new LibraryElementImpl.forNode(
-            createAnalysisContext(), AstTestFactory.libraryIdentifier2(["l"])),
+        new LibraryElementImpl.forNode(createAnalysisContext(), null,
+            AstTestFactory.libraryIdentifier2(["l"])),
         isNotNull);
   }
 
@@ -3780,7 +3783,7 @@
   void test_setImports() {
     AnalysisContext context = createAnalysisContext();
     LibraryElementImpl library = new LibraryElementImpl.forNode(
-        context, AstTestFactory.libraryIdentifier2(["l1"]));
+        context, null, AstTestFactory.libraryIdentifier2(["l1"]));
     List<ImportElementImpl> expectedImports = [
       ElementFactory.importFor(ElementFactory.library(context, "l2"), null),
       ElementFactory.importFor(ElementFactory.library(context, "l3"), null)
@@ -3799,6 +3802,7 @@
 
 @reflectiveTest
 class MethodElementImplTest extends EngineTestCase {
+  @deprecated
   void test_computeNode() {
     AnalysisContextHelper contextHelper = new AnalysisContextHelper();
     AnalysisContext context = contextHelper.context;
@@ -3829,6 +3833,7 @@
     }
   }
 
+  @deprecated
   void test_computeNode_withoutFunctionBody() {
     AnalysisOptionsImpl options = new AnalysisOptionsImpl();
     options.analyzeFunctionBodies = false;
@@ -3908,6 +3913,7 @@
 
 @reflectiveTest
 class ParameterElementImplTest extends EngineTestCase {
+  @deprecated
   void test_computeNode_DefaultFormalParameter() {
     AnalysisContextHelper contextHelper = new AnalysisContextHelper();
     AnalysisContext context = contextHelper.context;
@@ -3927,6 +3933,7 @@
     }
   }
 
+  @deprecated
   void test_computeNode_FieldFormalParameter() {
     AnalysisContextHelper contextHelper = new AnalysisContextHelper();
     AnalysisContext context = contextHelper.context;
@@ -3951,6 +3958,7 @@
     }
   }
 
+  @deprecated
   void test_computeNode_FunctionTypedFormalParameter() {
     AnalysisContextHelper contextHelper = new AnalysisContextHelper();
     AnalysisContext context = contextHelper.context;
@@ -3970,6 +3978,7 @@
     }
   }
 
+  @deprecated
   void test_computeNode_SimpleFormalParameter() {
     AnalysisContextHelper contextHelper = new AnalysisContextHelper();
     AnalysisContext context = contextHelper.context;
@@ -4027,7 +4036,7 @@
   Map<ElementLocation, Element> locationMap;
 
   TestElementResynthesizer(AnalysisContext context, this.locationMap)
-      : super(context);
+      : super(context, null);
 
   @override
   Element getElement(ElementLocation location) {
diff --git a/pkg/analyzer/test/src/dart/element/function_type_test.dart b/pkg/analyzer/test/src/dart/element/function_type_test.dart
index 16b9189..975952b 100644
--- a/pkg/analyzer/test/src/dart/element/function_type_test.dart
+++ b/pkg/analyzer/test/src/dart/element/function_type_test.dart
@@ -1,13 +1,13 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/member.dart';
 import 'package:analyzer/src/dart/element/type.dart';
+import 'package:analyzer/src/generated/utilities_dart.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
diff --git a/pkg/analyzer/test/src/dart/resolution/assignment_test.dart b/pkg/analyzer/test/src/dart/resolution/assignment_test.dart
index c07703f..ba409b4 100644
--- a/pkg/analyzer/test/src/dart/resolution/assignment_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/assignment_test.dart
@@ -22,7 +22,7 @@
 class AssignmentDriverResolutionTest extends DriverResolutionTest
     with AssignmentResolutionMixin {}
 
-abstract class AssignmentResolutionMixin implements ResolutionTest {
+mixin AssignmentResolutionMixin implements ResolutionTest {
   test_compound_indexExpression() async {
     addTestFile(r'''
 main() {
diff --git a/pkg/analyzer/test/src/dart/resolution/class_alias_test.dart b/pkg/analyzer/test/src/dart/resolution/class_alias_test.dart
index aea7e0f..6a6388a 100644
--- a/pkg/analyzer/test/src/dart/resolution/class_alias_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/class_alias_test.dart
@@ -19,7 +19,7 @@
 class ClassAliasDriverResolutionTest extends DriverResolutionTest
     with ClassAliasResolutionMixin {}
 
-abstract class ClassAliasResolutionMixin implements ResolutionTest {
+mixin ClassAliasResolutionMixin implements ResolutionTest {
   test_defaultConstructor() async {
     addTestFile(r'''
 class A {}
diff --git a/pkg/analyzer/test/src/dart/resolution/class_test.dart b/pkg/analyzer/test/src/dart/resolution/class_test.dart
index f825033..0fecf73 100644
--- a/pkg/analyzer/test/src/dart/resolution/class_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/class_test.dart
@@ -21,7 +21,7 @@
 class ClassDriverResolutionTest extends DriverResolutionTest
     with ClassResolutionMixin {}
 
-abstract class ClassResolutionMixin implements ResolutionTest {
+mixin ClassResolutionMixin implements ResolutionTest {
   test_abstractSuperMemberReference_getter() async {
     addTestFile(r'''
 abstract class A {
@@ -55,28 +55,7 @@
     assertTestErrors([CompileTimeErrorCode.ABSTRACT_SUPER_MEMBER_REFERENCE]);
     assertElement(
       findNode.simple('foo; // ref'),
-      findElement.getter('foo', className: 'Foo'),
-    );
-  }
-
-  test_abstractSuperMemberReference_method_invocation() async {
-    addTestFile(r'''
-abstract class A {
-  foo();
-}
-abstract class B extends A {
-  bar() {
-    super.foo(); // ref
-  }
-
-  foo() {} // does not matter
-}
-''');
-    await resolveTestFile();
-    assertTestErrors([CompileTimeErrorCode.ABSTRACT_SUPER_MEMBER_REFERENCE]);
-    assertElement(
-      findNode.simple('foo(); // ref'),
-      findElement.method('foo', of: 'A'),
+      findElement.getter('foo', of: 'Foo'),
     );
   }
 
@@ -96,31 +75,6 @@
     assertElement(findNode.simple('foo; // ref'), findElement.method('foo'));
   }
 
-  test_abstractSuperMemberReference_OK_mixinHasConcrete2_method() async {
-    addTestFile('''
-class A {
-}
-
-class M {
-  void foo() {}
-}
-
-class B = A with M;
-
-class C extends B {
-  void bar() {
-    super.foo(); // ref
-  }
-}
-''');
-    await resolveTestFile();
-    assertNoTestErrors();
-    assertElement(
-      findNode.simple('foo(); // ref'),
-      findElement.method('foo', of: 'M'),
-    );
-  }
-
   test_abstractSuperMemberReference_OK_superHasConcrete_mixinHasAbstract_method() async {
     addTestFile('''
 class A {
@@ -163,31 +117,7 @@
     assertNoTestErrors();
     assertElement(
       findNode.simple('foo; // ref'),
-      findElement.getter('foo', className: 'A'),
-    );
-  }
-
-  test_abstractSuperMemberReference_OK_superSuperHasConcrete_method() async {
-    addTestFile('''
-abstract class A {
-  void foo() {}
-}
-
-abstract class B extends A {
-  void foo();
-}
-
-class C extends B {
-  void bar() {
-    super.foo(); // ref
-  }
-}
-''');
-    await resolveTestFile();
-    assertNoTestErrors();
-    assertElement(
-      findNode.simple('foo(); // ref'),
-      findElement.method('foo', of: 'A'),
+      findElement.getter('foo', of: 'A'),
     );
   }
 
@@ -1371,6 +1301,32 @@
     assertNoTestErrors();
   }
 
+  test_error_mismatchedGetterAndSetterTypes_OK_setterParameter_0() async {
+    addTestFile(r'''
+class C {
+  int get foo => 0;
+  set foo() {}
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      CompileTimeErrorCode.WRONG_NUMBER_OF_PARAMETERS_FOR_SETTER,
+    ]);
+  }
+
+  test_error_mismatchedGetterAndSetterTypes_OK_setterParameter_2() async {
+    addTestFile(r'''
+class C {
+  int get foo => 0;
+  set foo(String p1, String p2) {}
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      CompileTimeErrorCode.WRONG_NUMBER_OF_PARAMETERS_FOR_SETTER,
+    ]);
+  }
+
   test_error_mismatchedGetterAndSetterTypes_superGetter() async {
     addTestFile(r'''
 class A {
@@ -1483,6 +1439,22 @@
     ]);
   }
 
+  test_issue32815() async {
+    addTestFile(r'''
+class A<T> extends B<T> {}
+class B<T> extends A<T> {}
+class C<T> extends B<T> implements I<T> {}
+
+abstract class I<T> {}
+
+main() {
+  Iterable<I<int>> x = [new C()];
+}
+''');
+    await resolveTestFile();
+    assertHasTestErrors();
+  }
+
   test_recursiveInterfaceInheritance_extends() async {
     addTestFile(r'''
 class A extends B {}
@@ -1670,7 +1642,10 @@
   }
 }''');
     await resolveTestFile();
-    assertTestErrors([StaticTypeWarningCode.UNDEFINED_SUPER_OPERATOR]);
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_SUPER_OPERATOR,
+      StaticTypeWarningCode.UNDEFINED_SUPER_OPERATOR,
+    ]);
   }
 
   test_undefinedSuperOperator_indexGetter() async {
diff --git a/pkg/analyzer/test/src/dart/resolution/comment_test.dart b/pkg/analyzer/test/src/dart/resolution/comment_test.dart
new file mode 100644
index 0000000..8a4d787
--- /dev/null
+++ b/pkg/analyzer/test/src/dart/resolution/comment_test.dart
@@ -0,0 +1,261 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'driver_resolution.dart';
+import 'resolution.dart';
+import 'task_resolution.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(CommentDriverResolutionTest);
+    defineReflectiveTests(CommentTaskResolutionTest);
+  });
+}
+
+@reflectiveTest
+class CommentDriverResolutionTest extends DriverResolutionTest
+    with ClassAliasResolutionMixin {}
+
+mixin ClassAliasResolutionMixin implements ResolutionTest {
+  test_error_unqualifiedReferenceToNonLocalStaticMember() async {
+    addTestFile(r'''
+class A {
+  static void foo() {}
+}
+
+/// [foo]
+class B extends A {}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    assertElement(
+      findNode.simple('foo]'),
+      findElement.method('foo', of: 'A'),
+    );
+  }
+
+  test_new() async {
+    addTestFile(r'''
+class A {
+  A();
+  A.named();
+}
+
+/// [new A] or [new A.named]
+main() {}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    assertElement(
+      findNode.simple('A]'),
+      findElement.unnamedConstructor('A'),
+    );
+    assertElement(
+      findNode.simple('A.named]'),
+      findElement.class_('A'),
+    );
+    assertElement(
+      findNode.simple('named]'),
+      findElement.constructor('named', className: 'A'),
+    );
+  }
+
+  test_identifier_beforeConstructor() async {
+    addTestFile(r'''
+class A {
+  /// [p]
+  A(int p);
+}''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    assertElement(
+      findNode.simple('p]'),
+      findElement.parameter('p'),
+    );
+  }
+
+  test_identifier_beforeEnum() async {
+    addTestFile(r'''
+/// This is the [Samurai] kind.
+enum Samurai {
+  /// Use [int].
+  WITH_SWORD,
+  /// Like [WITH_SWORD], but only without one.
+  WITHOUT_SWORD
+}''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    assertElement(
+      findNode.simple('Samurai]'),
+      findElement.enum_('Samurai'),
+    );
+    assertElement(
+      findNode.simple('int]'),
+      intElement,
+    );
+    assertElement(
+      findNode.simple('WITH_SWORD]'),
+      findElement.getter('WITH_SWORD'),
+    );
+  }
+
+  test_identifier_beforeFunction_blockBody() async {
+    addTestFile(r'''
+/// [p]
+foo(int p) {}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    assertElement(
+      findNode.simple('p]'),
+      findElement.parameter('p'),
+    );
+  }
+
+  test_identifier_parameter_functionTyped() async {
+    addTestFile(r'''
+/// [bar]
+foo(int bar()) {}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    assertElement(
+      findNode.simple('bar]'),
+      findElement.parameter('bar'),
+    );
+  }
+
+  test_identifier_beforeFunction_expressionBody() async {
+    addTestFile(r'''
+/// [p]
+foo(int p) => null;
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    assertElement(
+      findNode.simple('p]'),
+      findElement.parameter('p'),
+    );
+  }
+
+  test_identifier_beforeFunctionTypeAlias() async {
+    addTestFile(r'''
+/// [p]
+typedef Foo(int p);
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    assertElement(
+      findNode.simple('p]'),
+      findElement.parameter('p'),
+    );
+  }
+
+  test_identifier_beforeGenericTypeAlias() async {
+    addTestFile(r'''
+/// Can resolve [T], [S], and [p].
+typedef Foo<T> = Function<S>(int p);
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    assertElement(
+      findNode.simple('T]'),
+      findElement.typeParameter('T'),
+    );
+    assertElement(findNode.simple('S]'), findElement.typeParameter('S'));
+    assertElement(
+      findNode.simple('p]'),
+      findElement.parameter('p'),
+    );
+  }
+
+  test_identifier_beforeGetter() async {
+    addTestFile(r'''
+/// [int]
+get g => null;
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    assertElement(findNode.simple('int]'), intElement);
+  }
+
+  test_identifier_beforeMethod() async {
+    addTestFile(r'''
+abstract class A {
+  /// [p1]
+  ma(int p1);
+  
+  /// [p2]
+  mb(int p2);
+  
+  /// [p3] and [p4]
+  mc(int p3, p4());
+  
+  /// [p5]
+  md(int p5, {int p6});
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    assertElement(findNode.simple('p1]'), findElement.parameter('p1'));
+    assertElement(findNode.simple('p2]'), findElement.parameter('p2'));
+    assertElement(findNode.simple('p3]'), findElement.parameter('p3'));
+    assertElement(findNode.simple('p4]'), findElement.parameter('p4'));
+    assertElement(findNode.simple('p5]'), findElement.parameter('p5'));
+  }
+
+  test_identifier_beforeClass() async {
+    addTestFile(r'''
+/// [foo]
+class A {
+  foo() {}
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    assertElement(
+      findNode.simple('foo]'),
+      findElement.method('foo'),
+    );
+  }
+
+  test_identifier_setter() async {
+    addTestFile(r'''
+class A {
+  /// [x] in A
+  mA() {}
+  set x(value) {}
+}
+
+class B extends A {
+  /// [x] in B
+  mB() {}
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var x = findElement.setter('x', className: 'A');
+    assertElement(findNode.simple('x] in A'), x);
+    assertElement(findNode.simple('x] in B'), x);
+  }
+}
+
+@reflectiveTest
+class CommentTaskResolutionTest extends TaskResolutionTest
+    with ClassAliasResolutionMixin {}
diff --git a/pkg/analyzer/test/src/dart/resolution/constant_test.dart b/pkg/analyzer/test/src/dart/resolution/constant_test.dart
index 53a5c74..4ba17ed 100644
--- a/pkg/analyzer/test/src/dart/resolution/constant_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/constant_test.dart
@@ -3,6 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analyzer/src/dart/element/element.dart';
+import 'package:analyzer/src/error/codes.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -20,7 +21,67 @@
 @reflectiveTest
 class ConstantDriverTest extends DriverResolutionTest with ConstantMixin {}
 
-abstract class ConstantMixin implements ResolutionTest {
+mixin ConstantMixin implements ResolutionTest {
+  test_annotation_constructor_named() async {
+    newFile('/test/lib/a.dart', content: r'''
+class A {
+  final int f;
+  const A.named(this.f);
+}
+''');
+
+    newFile('/test/lib/b.dart', content: r'''
+import 'a.dart';
+
+@A.named(42)
+class B {}
+''');
+
+    addTestFile(r'''
+import 'b.dart';
+
+B b;
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var classB = findNode.typeName('B b;').name.staticElement;
+    var annotation = classB.metadata.single;
+    var value = annotation.computeConstantValue();
+    expect(value, isNotNull);
+    expect(value.getField('f').toIntValue(), 42);
+  }
+
+  test_annotation_constructor_unnamed() async {
+    newFile('/test/lib/a.dart', content: r'''
+class A {
+  final int f;
+  const A(this.f);
+}
+''');
+
+    newFile('/test/lib/b.dart', content: r'''
+import 'a.dart';
+
+@A(42)
+class B {}
+''');
+
+    addTestFile(r'''
+import 'b.dart';
+
+B b;
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var classB = findNode.typeName('B b;').name.staticElement;
+    var annotation = classB.metadata.single;
+    var value = annotation.computeConstantValue();
+    expect(value, isNotNull);
+    expect(value.getField('f').toIntValue(), 42);
+  }
+
   test_constantValue_defaultParameter_noDefaultValue() async {
     newFile('/test/lib/a.dart', content: r'''
 class A {
@@ -70,6 +131,25 @@
     var value = node.elementAnnotation.constantValue;
     expect(value.getField('(super)').getField('f').toIntValue(), 42);
   }
+
+  test_constNotInitialized() async {
+    addTestFile(r'''
+class B {
+  const B(_);
+}
+
+class C extends B {
+  static const a;
+  const C() : super(a);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      CompileTimeErrorCode.NON_CONSTANT_VALUE_IN_INITIALIZER,
+      CompileTimeErrorCode.CONST_NOT_INITIALIZED,
+      CompileTimeErrorCode.CONST_NOT_INITIALIZED,
+    ]);
+  }
 }
 
 @reflectiveTest
diff --git a/pkg/analyzer/test/src/dart/resolution/driver_resolution.dart b/pkg/analyzer/test/src/dart/resolution/driver_resolution.dart
index fb034da..e5315a5 100644
--- a/pkg/analyzer/test/src/dart/resolution/driver_resolution.dart
+++ b/pkg/analyzer/test/src/dart/resolution/driver_resolution.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -13,14 +13,13 @@
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 
-import '../../context/mock_sdk.dart';
 import 'resolution.dart';
 
 /// [AnalysisDriver] based implementation of [ResolutionTest].
-class DriverResolutionTest extends Object
-    with ResourceProviderMixin, ResolutionTest {
+class DriverResolutionTest with ResourceProviderMixin, ResolutionTest {
   final ByteStore byteStore = new MemoryByteStore();
 
   final StringBuffer logBuffer = new StringBuffer();
@@ -32,7 +31,7 @@
 
   @override
   Future<TestAnalysisResult> resolveFile(String path) async {
-    AnalysisResult result = await driver.getResult(path);
+    var result = await driver.getResult(path);
     return new TestAnalysisResult(
       path,
       result.content,
diff --git a/pkg/analyzer/test/src/dart/resolution/enum_test.dart b/pkg/analyzer/test/src/dart/resolution/enum_test.dart
index 930ab7c..ff350fb 100644
--- a/pkg/analyzer/test/src/dart/resolution/enum_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/enum_test.dart
@@ -21,7 +21,7 @@
 class EnumDriverResolutionTest extends DriverResolutionTest
     with EnumResolutionMixin {}
 
-abstract class EnumResolutionMixin implements ResolutionTest {
+mixin EnumResolutionMixin implements ResolutionTest {
   test_error_conflictingStaticAndInstance_index() async {
     addTestFile(r'''
 enum E {
diff --git a/pkg/analyzer/test/src/dart/resolution/find_element.dart b/pkg/analyzer/test/src/dart/resolution/find_element.dart
index 4eadf43..d408980 100644
--- a/pkg/analyzer/test/src/dart/resolution/find_element.dart
+++ b/pkg/analyzer/test/src/dart/resolution/find_element.dart
@@ -115,9 +115,16 @@
     fail('Not found generic type alias: $name');
   }
 
-  PropertyAccessorElement getter(String name, {String className}) {
+  PropertyAccessorElement getter(String name, {String of}) {
+    for (var enum_ in unitElement.enums) {
+      for (var accessor in enum_.accessors) {
+        if (accessor.isGetter && accessor.displayName == name) {
+          return accessor;
+        }
+      }
+    }
     for (var class_ in unitElement.types) {
-      if (className != null && class_.name != className) {
+      if (of != null && class_.name != of) {
         continue;
       }
       for (var accessor in class_.accessors) {
@@ -150,6 +157,25 @@
     return class_(name).type;
   }
 
+  FunctionElement localFunction(String name) {
+    FunctionElement result;
+    unit.accept(new FunctionAstVisitor(
+      functionDeclarationStatement: (node) {
+        var element = node.functionDeclaration.declaredElement;
+        if (element is FunctionElement) {
+          if (result != null) {
+            throw new StateError('Local function name $name is not unique.');
+          }
+          result = element;
+        }
+      },
+    ));
+    if (result == null) {
+      fail('Not found local function: $name');
+    }
+    return result;
+  }
+
   LocalVariableElement localVar(String name) {
     LocalVariableElement result;
     unit.accept(new FunctionAstVisitor(
@@ -318,6 +344,9 @@
 
     for (var type in unitElement.functionTypeAliases) {
       type.typeParameters.forEach(consider);
+      if (type is GenericTypeAliasElement) {
+        type.function.typeParameters.forEach(consider);
+      }
     }
     for (var type in unitElement.types) {
       type.typeParameters.forEach(consider);
diff --git a/pkg/analyzer/test/src/dart/resolution/find_node.dart b/pkg/analyzer/test/src/dart/resolution/find_node.dart
index 67271af..08de2f9 100644
--- a/pkg/analyzer/test/src/dart/resolution/find_node.dart
+++ b/pkg/analyzer/test/src/dart/resolution/find_node.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -28,6 +28,10 @@
     return _node(search, (n) => n is CascadeExpression);
   }
 
+  ClassDeclaration classDeclaration(String search) {
+    return _node(search, (n) => n is ClassDeclaration);
+  }
+
   CommentReference commentReference(String search) {
     return _node(search, (n) => n is CommentReference);
   }
@@ -158,7 +162,7 @@
     var node = new NodeLocator2(index).searchWithin(unit);
     expect(node, isNotNull);
 
-    var result = node.getAncestor(predicate);
+    var result = node.thisOrAncestorMatching(predicate);
     expect(result, isNotNull);
     return result;
   }
diff --git a/pkg/analyzer/test/src/dart/resolution/for_in_test.dart b/pkg/analyzer/test/src/dart/resolution/for_in_test.dart
index fdbdd76..7ec1a40 100644
--- a/pkg/analyzer/test/src/dart/resolution/for_in_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/for_in_test.dart
@@ -20,7 +20,7 @@
 class ForInDriverResolutionTest extends DriverResolutionTest
     with ForInResolutionMixin {}
 
-abstract class ForInResolutionMixin implements ResolutionTest {
+mixin ForInResolutionMixin implements ResolutionTest {
   test_importPrefix_asIterable() async {
     // TODO(scheglov) Remove this test (already tested as import prefix).
     // TODO(scheglov) Move other for-in tests here.
diff --git a/pkg/analyzer/test/src/dart/resolution/function_ast_visitor.dart b/pkg/analyzer/test/src/dart/resolution/function_ast_visitor.dart
index 82ae780..f3c951b 100644
--- a/pkg/analyzer/test/src/dart/resolution/function_ast_visitor.dart
+++ b/pkg/analyzer/test/src/dart/resolution/function_ast_visitor.dart
@@ -7,10 +7,23 @@
 
 /// [RecursiveAstVisitor] that delegates visit methods to functions.
 class FunctionAstVisitor extends RecursiveAstVisitor<void> {
+  final void Function(FunctionDeclarationStatement)
+      functionDeclarationStatement;
   final void Function(SimpleIdentifier) simpleIdentifier;
   final void Function(VariableDeclaration) variableDeclaration;
 
-  FunctionAstVisitor({this.simpleIdentifier, this.variableDeclaration});
+  FunctionAstVisitor(
+      {this.functionDeclarationStatement,
+      this.simpleIdentifier,
+      this.variableDeclaration});
+
+  @override
+  void visitFunctionDeclarationStatement(FunctionDeclarationStatement node) {
+    if (functionDeclarationStatement != null) {
+      functionDeclarationStatement(node);
+    }
+    super.visitFunctionDeclarationStatement(node);
+  }
 
   @override
   void visitSimpleIdentifier(SimpleIdentifier node) {
diff --git a/pkg/analyzer/test/src/dart/resolution/generic_type_alias_test.dart b/pkg/analyzer/test/src/dart/resolution/generic_type_alias_test.dart
index 7f24421a..2e64644 100644
--- a/pkg/analyzer/test/src/dart/resolution/generic_type_alias_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/generic_type_alias_test.dart
@@ -2,6 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
+import 'package:analyzer/src/error/codes.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -20,7 +21,111 @@
 class GenericTypeAliasDriverResolutionTest extends DriverResolutionTest
     with GenericTypeAliasResolutionMixin {}
 
-abstract class GenericTypeAliasResolutionMixin implements ResolutionTest {
+mixin GenericTypeAliasResolutionMixin implements ResolutionTest {
+  test_genericFunctionTypeCannotBeTypeArgument_def_class() async {
+    addTestFile(r'''
+class C<T> {}
+
+typedef G = Function<S>();
+
+C<G> x;
+''');
+    await resolveTestFile();
+    assertTestErrors(
+      [CompileTimeErrorCode.GENERIC_FUNCTION_TYPE_CANNOT_BE_TYPE_ARGUMENT],
+    );
+  }
+
+  test_genericFunctionTypeCannotBeTypeArgument_literal_class() async {
+    addTestFile(r'''
+class C<T> {}
+
+C<Function<S>()> x;
+''');
+    await resolveTestFile();
+    assertTestErrors(
+      [CompileTimeErrorCode.GENERIC_FUNCTION_TYPE_CANNOT_BE_TYPE_ARGUMENT],
+    );
+  }
+
+  test_genericFunctionTypeCannotBeTypeArgument_literal_function() async {
+    addTestFile(r'''
+T f<T>(T) => null;
+
+main() {
+  f<Function<S>()>(null);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors(
+      [CompileTimeErrorCode.GENERIC_FUNCTION_TYPE_CANNOT_BE_TYPE_ARGUMENT],
+    );
+  }
+
+  test_genericFunctionTypeCannotBeTypeArgument_literal_functionType() async {
+    addTestFile(r'''
+T Function<T>(T) f;
+
+main() {
+  f<Function<S>()>(null);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors(
+      [CompileTimeErrorCode.GENERIC_FUNCTION_TYPE_CANNOT_BE_TYPE_ARGUMENT],
+    );
+  }
+
+  test_genericFunctionTypeCannotBeTypeArgument_literal_method() async {
+    addTestFile(r'''
+class C {
+  T f<T>(T) => null;
+}
+
+main() {
+  new C().f<Function<S>()>(null);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors(
+      [CompileTimeErrorCode.GENERIC_FUNCTION_TYPE_CANNOT_BE_TYPE_ARGUMENT],
+    );
+  }
+
+  test_genericFunctionTypeCannotBeTypeArgument_literal_typedef() async {
+    addTestFile(r'''
+typedef T F<T>(T t);
+
+F<Function<S>()> x;
+''');
+    await resolveTestFile();
+    assertTestErrors(
+      [CompileTimeErrorCode.GENERIC_FUNCTION_TYPE_CANNOT_BE_TYPE_ARGUMENT],
+    );
+  }
+
+  test_genericFunctionTypeCannotBeTypeArgument_OK_def_class() async {
+    addTestFile(r'''
+class C<T> {}
+
+typedef G = Function();
+
+C<G> x;
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+  }
+
+  test_genericFunctionTypeCannotBeTypeArgument_OK_literal_class() async {
+    addTestFile(r'''
+class C<T> {}
+
+C<Function()> x;
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+  }
+
   test_typeParameters() async {
     addTestFile(r'''
 class A {}
diff --git a/pkg/analyzer/test/src/dart/resolution/import_prefix_test.dart b/pkg/analyzer/test/src/dart/resolution/import_prefix_test.dart
index a269e79..b13db90 100644
--- a/pkg/analyzer/test/src/dart/resolution/import_prefix_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/import_prefix_test.dart
@@ -21,7 +21,7 @@
 class ImportPrefixDriverResolutionTest extends DriverResolutionTest
     with ImportPrefixResolutionMixin {}
 
-abstract class ImportPrefixResolutionMixin implements ResolutionTest {
+mixin ImportPrefixResolutionMixin implements ResolutionTest {
   test_asExpression_expressionStatement() async {
     addTestFile(r'''
 import 'dart:async' as p;
diff --git a/pkg/analyzer/test/src/dart/resolution/instance_creation_test.dart b/pkg/analyzer/test/src/dart/resolution/instance_creation_test.dart
index 9594336..302d84b 100644
--- a/pkg/analyzer/test/src/dart/resolution/instance_creation_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/instance_creation_test.dart
@@ -20,7 +20,7 @@
 class InstanceCreationDriverResolutionTest extends DriverResolutionTest
     with InstanceCreationResolutionMixin {}
 
-abstract class InstanceCreationResolutionMixin implements ResolutionTest {
+mixin InstanceCreationResolutionMixin implements ResolutionTest {
   test_error_wrongNumberOfTypeArgumentsConstructor_explicitNew() async {
     addTestFile(r'''
 class Foo<X> {
@@ -47,6 +47,24 @@
 //    );
   }
 
+  test_error_newWithInvalidTypeParameters_implicitNew_inference_top() async {
+    addTestFile(r'''
+final foo = Map<int>();
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticWarningCode.NEW_WITH_INVALID_TYPE_PARAMETERS,
+    ]);
+
+    var creation = findNode.instanceCreation('Map<int>');
+    assertInstanceCreation(
+      creation,
+      mapElement,
+      'Map<dynamic, dynamic>',
+      expectedConstructorMember: true,
+    );
+  }
+
   test_error_wrongNumberOfTypeArgumentsConstructor_explicitNew_prefix() async {
     newFile('/test/lib/a.dart', content: '''
 class Foo<X> {
@@ -137,4 +155,10 @@
 
 @reflectiveTest
 class InstanceCreationTaskResolutionTest extends TaskResolutionTest
-    with InstanceCreationResolutionMixin {}
+    with InstanceCreationResolutionMixin {
+  @FailingTest(reason: 'Does not report the error.')
+  test_error_newWithInvalidTypeParameters_implicitNew_inference_top() {
+    return super
+        .test_error_newWithInvalidTypeParameters_implicitNew_inference_top();
+  }
+}
diff --git a/pkg/analyzer/test/src/dart/resolution/instance_member_inference_class_test.dart b/pkg/analyzer/test/src/dart/resolution/instance_member_inference_class_test.dart
index 1218643..ad4b765 100644
--- a/pkg/analyzer/test/src/dart/resolution/instance_member_inference_class_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/instance_member_inference_class_test.dart
@@ -19,7 +19,7 @@
 class InstanceMemberInferenceClassDriverResolutionTest
     extends DriverResolutionTest with InstanceMemberInferenceClassMixin {}
 
-abstract class InstanceMemberInferenceClassMixin implements ResolutionTest {
+mixin InstanceMemberInferenceClassMixin implements ResolutionTest {
   test_invalid_inheritanceCycle() async {
     addTestFile('''
 class A extends C {}
diff --git a/pkg/analyzer/test/src/dart/resolution/instance_member_inference_mixin_test.dart b/pkg/analyzer/test/src/dart/resolution/instance_member_inference_mixin_test.dart
index 387e166..36db4b0 100644
--- a/pkg/analyzer/test/src/dart/resolution/instance_member_inference_mixin_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/instance_member_inference_mixin_test.dart
@@ -19,7 +19,7 @@
 class InstanceMemberInferenceMixinDriverResolutionTest
     extends DriverResolutionTest with InstanceMemberInferenceMixinMixin {}
 
-abstract class InstanceMemberInferenceMixinMixin implements ResolutionTest {
+mixin InstanceMemberInferenceMixinMixin implements ResolutionTest {
   test_invalid_inheritanceCycle() async {
     addTestFile('''
 mixin A on C {}
diff --git a/pkg/analyzer/test/src/dart/resolution/method_invocation_test.dart b/pkg/analyzer/test/src/dart/resolution/method_invocation_test.dart
new file mode 100644
index 0000000..811228a
--- /dev/null
+++ b/pkg/analyzer/test/src/dart/resolution/method_invocation_test.dart
@@ -0,0 +1,1720 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/src/error/codes.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'driver_resolution.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(MethodInvocationResolutionTest);
+  });
+}
+
+@reflectiveTest
+class MethodInvocationResolutionTest extends DriverResolutionTest {
+  test_error_abstractSuperMemberReference() async {
+    addTestFile(r'''
+abstract class A {
+  void foo(int _);
+}
+abstract class B extends A {
+  void bar() {
+    super.foo(0);
+  }
+
+  void foo(int _) {} // does not matter
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([CompileTimeErrorCode.ABSTRACT_SUPER_MEMBER_REFERENCE]);
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      findElement.method('foo', of: 'A'),
+      '(int) → void',
+    );
+    assertSuperExpression(invocation.target);
+  }
+
+  test_error_abstractSuperMemberReference_mixinHasNoSuchMethod() async {
+    addTestFile('''
+class A {
+  int foo();
+  noSuchMethod(im) => 42;
+}
+
+class B extends Object with A {
+  foo() => super.foo(); // ref
+  noSuchMethod(im) => 87;
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([CompileTimeErrorCode.ABSTRACT_SUPER_MEMBER_REFERENCE]);
+
+    var invocation = findNode.methodInvocation('foo(); // ref');
+    assertMethodInvocation(
+      invocation,
+      findElement.method('foo', of: 'A'),
+      '() → int',
+    );
+    assertSuperExpression(invocation.target);
+  }
+
+  test_error_abstractSuperMemberReference_OK_mixinHasConcrete() async {
+    addTestFile('''
+class A {}
+
+class M {
+  void foo(int _) {}
+}
+
+class B = A with M;
+
+class C extends B {
+  void bar() {
+    super.foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      findElement.method('foo', of: 'M'),
+      '(int) → void',
+    );
+    assertSuperExpression(invocation.target);
+  }
+
+  test_error_abstractSuperMemberReference_OK_superHasNoSuchMethod() async {
+    addTestFile(r'''
+class A {
+  int foo();
+  noSuchMethod(im) => 42;
+}
+
+class B extends A {
+  int foo() => super.foo(); // ref
+  noSuchMethod(im) => 87;
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('super.foo(); // ref');
+    assertMethodInvocation(
+      invocation,
+      findElement.method('foo', of: 'A'),
+      '() → int',
+    );
+    assertSuperExpression(invocation.target);
+  }
+
+  test_error_abstractSuperMemberReference_OK_superSuperHasConcrete() async {
+    addTestFile('''
+abstract class A {
+  void foo(int _) {}
+}
+
+abstract class B extends A {
+  void foo(int _);
+}
+
+class C extends B {
+  void bar() {
+    super.foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      findElement.method('foo', of: 'A'),
+      '(int) → void',
+    );
+    assertSuperExpression(invocation.target);
+  }
+
+  test_error_ambiguousImport_topFunction() async {
+    newFile('/test/lib/a.dart', content: r'''
+void foo(int _) {}
+''');
+    newFile('/test/lib/b.dart', content: r'''
+void foo(int _) {}
+''');
+
+    addTestFile(r'''
+import 'a.dart';
+import 'b.dart';
+
+main() {
+  foo(0);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticWarningCode.AMBIGUOUS_IMPORT,
+    ]);
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertInvokeType(invocation, '(int) → void');
+    assertType(invocation, 'void');
+  }
+
+  test_error_ambiguousImport_topFunction_prefixed() async {
+    newFile('/test/lib/a.dart', content: r'''
+void foo(int _) {}
+''');
+    newFile('/test/lib/b.dart', content: r'''
+void foo(int _) {}
+''');
+
+    addTestFile(r'''
+import 'a.dart' as p;
+import 'b.dart' as p;
+
+main() {
+  p.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticWarningCode.AMBIGUOUS_IMPORT,
+    ]);
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertInvokeType(invocation, '(int) → void');
+    assertType(invocation, 'void');
+  }
+
+  test_error_instanceAccessToStaticMember_method() async {
+    addTestFile(r'''
+class A {
+  static void foo(int _) {}
+}
+
+main(A a) {
+  a.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.INSTANCE_ACCESS_TO_STATIC_MEMBER,
+    ]);
+    _assertInvalidInvocation(
+      'a.foo(0)',
+      findElement.method('foo'),
+      expectedNameType: '(int) → void',
+    );
+  }
+
+  test_error_invocationOfNonFunction_interface_hasCall_field() async {
+    addTestFile(r'''
+class C {
+  void Function() call;
+}
+
+main(C c) {
+  c();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION,
+    ]);
+    _assertInvalidInvocation(
+      'c()',
+      findElement.parameter('c'),
+    );
+  }
+
+  test_error_invocationOfNonFunction_localVariable() async {
+    addTestFile(r'''
+main() {
+  Object foo;
+  foo();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION,
+    ]);
+    _assertInvalidInvocation(
+      'foo()',
+      findElement.localVar('foo'),
+      expectedNameType: 'Object',
+    );
+  }
+
+  test_error_invocationOfNonFunction_OK_dynamic_localVariable() async {
+    addTestFile(r'''
+main() {
+  var foo;
+  foo();
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+    _assertInvalidInvocation('foo();', findElement.localVar('foo'));
+  }
+
+  test_error_invocationOfNonFunction_OK_dynamicGetter_instance() async {
+    addTestFile(r'''
+class C {
+  var foo;
+}
+
+main(C c) {
+  c.foo();
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+    _assertInvalidInvocation('c.foo();', findElement.getter('foo'));
+  }
+
+  test_error_invocationOfNonFunction_OK_dynamicGetter_superClass() async {
+    addTestFile(r'''
+class A {
+  var foo;
+}
+
+class B extends A {
+  main() {
+    foo();
+  }
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+    _assertInvalidInvocation('foo();', findElement.getter('foo'));
+  }
+
+  test_error_invocationOfNonFunction_OK_dynamicGetter_thisClass() async {
+    addTestFile(r'''
+class C {
+  var foo;
+
+  main() {
+    foo();
+  }
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+    _assertInvalidInvocation('foo();', findElement.getter('foo'));
+  }
+
+  test_error_invocationOfNonFunction_OK_Function() async {
+    addTestFile(r'''
+f(Function foo) {
+  foo(1, 2);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+    _assertInvalidInvocation('foo(1, 2);', findElement.parameter('foo'));
+  }
+
+  test_error_invocationOfNonFunction_OK_functionTypeTypeParameter() async {
+    addTestFile(r'''
+typedef MyFunction = double Function(int _);
+
+class C<T extends MyFunction> {
+  T foo;
+  
+  main() {
+    foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+    assertMethodInvocation(
+      findNode.methodInvocation('foo(0)'),
+      findElement.getter('foo'),
+      '(int) → double',
+    );
+  }
+
+  test_error_invocationOfNonFunction_static_hasTarget() async {
+    addTestFile(r'''
+class C {
+  static int foo;
+}
+
+main() {
+  C.foo();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION,
+    ]);
+    _assertInvalidInvocation(
+      'foo()',
+      findElement.getter('foo'),
+    );
+  }
+
+  test_error_invocationOfNonFunction_static_noTarget() async {
+    addTestFile(r'''
+class C {
+  static int foo;
+  
+  main() {
+    foo();
+  }
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION,
+    ]);
+    _assertInvalidInvocation(
+      'foo()',
+      findElement.getter('foo'),
+    );
+  }
+
+  test_error_invocationOfNonFunction_super_getter() async {
+    addTestFile(r'''
+class A {
+  int get foo => 0;
+}
+
+class B extends A {
+  main() {
+    super.foo();
+  }
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.INVOCATION_OF_NON_FUNCTION,
+    ]);
+    _assertInvalidInvocation(
+      'foo()',
+      findElement.getter('foo'),
+    );
+  }
+
+  test_error_prefixIdentifierNotFollowedByDot() async {
+    newFile('/test/lib/a.dart', content: r'''
+void foo() {}
+''');
+
+    addTestFile(r'''
+import 'a.dart' as prefix;
+
+main() {
+  prefix?.foo();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      CompileTimeErrorCode.PREFIX_IDENTIFIER_NOT_FOLLOWED_BY_DOT,
+    ]);
+
+    var import = _importFinder('package:test/a.dart');
+
+    var invocation = findNode.methodInvocation('foo();');
+    assertMethodInvocation(
+      invocation,
+      import.topFunction('foo'),
+      '() → void',
+    );
+    assertImportPrefix(invocation.target, import.prefix);
+  }
+
+  test_error_prefixIdentifierNotFollowedByDot_deferred() async {
+    addTestFile(r'''
+import 'dart:math' deferred as math;
+
+main() {
+  math?.loadLibrary();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      CompileTimeErrorCode.PREFIX_IDENTIFIER_NOT_FOLLOWED_BY_DOT,
+    ]);
+
+    var import = _importFinder('dart:math');
+
+    var invocation = findNode.methodInvocation('loadLibrary()');
+    assertMethodInvocation(
+      invocation,
+      import.importedLibrary.loadLibraryFunction,
+      '() → Future<dynamic>',
+    );
+    assertImportPrefix(invocation.target, import.prefix);
+  }
+
+  test_error_prefixIdentifierNotFollowedByDot_invoke() async {
+    addTestFile(r'''
+import 'dart:math' as foo;
+
+main() {
+  foo();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      CompileTimeErrorCode.PREFIX_IDENTIFIER_NOT_FOLLOWED_BY_DOT,
+    ]);
+    _assertInvalidInvocation(
+      'foo()',
+      findElement.import('dart:math').prefix,
+      dynamicNameType: true,
+    );
+  }
+
+  test_error_undefinedFunction() async {
+    addTestFile(r'''
+main() {
+  foo(0);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_FUNCTION,
+    ]);
+    _assertUnresolvedMethodInvocation('foo(0)');
+  }
+
+  test_error_undefinedFunction_hasTarget_importPrefix() async {
+    addTestFile(r'''
+import 'dart:math' as math;
+
+main() {
+  math.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_FUNCTION,
+    ]);
+    _assertUnresolvedMethodInvocation('foo(0);');
+  }
+
+  test_error_undefinedIdentifier_target() async {
+    addTestFile(r'''
+main() {
+  bar.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticWarningCode.UNDEFINED_IDENTIFIER,
+    ]);
+    _assertUnresolvedMethodInvocation('foo(0);');
+  }
+
+  test_error_undefinedMethod_hasTarget_class() async {
+    addTestFile(r'''
+class C {}
+main() {
+  C.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+    ]);
+    _assertUnresolvedMethodInvocation('foo(0);');
+  }
+
+  test_error_undefinedMethod_hasTarget_class_arguments() async {
+    addTestFile(r'''
+class C {}
+
+int x;
+main() {
+  C.foo(x);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+    ]);
+
+    _assertUnresolvedMethodInvocation('foo(x);');
+    assertTopGetRef('x)', 'x');
+  }
+
+  test_error_undefinedMethod_hasTarget_class_inSuperclass() async {
+    addTestFile(r'''
+class S {
+  static void foo(int _) {}
+}
+
+class C extends S {}
+
+main() {
+  C.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+    ]);
+    _assertUnresolvedMethodInvocation('foo(0);');
+  }
+
+  test_error_undefinedMethod_hasTarget_class_typeArguments() async {
+    addTestFile(r'''
+class C {}
+
+main() {
+  C.foo<int>();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+    ]);
+
+    _assertUnresolvedMethodInvocation('foo<int>();');
+    assertTypeName(findNode.typeName('int>'), intElement, 'int');
+  }
+
+  test_error_undefinedMethod_hasTarget_class_typeParameter() async {
+    addTestFile(r'''
+class C<T> {
+  static main() => C.T();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+    ]);
+    _assertUnresolvedMethodInvocation('C.T();');
+  }
+
+  test_error_undefinedMethod_hasTarget_instance() async {
+    addTestFile(r'''
+main() {
+  42.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+    ]);
+    _assertUnresolvedMethodInvocation('foo(0);');
+  }
+
+  test_error_undefinedMethod_hasTarget_localVariable_function() async {
+    addTestFile(r'''
+main() {
+  var v = () {};
+  v.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+    ]);
+    _assertUnresolvedMethodInvocation('foo(0);');
+  }
+
+  test_error_undefinedMethod_noTarget() async {
+    addTestFile(r'''
+class C {
+  main() {
+    foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+    ]);
+    _assertUnresolvedMethodInvocation('foo(0);');
+  }
+
+  test_error_undefinedMethod_object_call() async {
+    addTestFile(r'''
+main(Object o) {
+  o.call();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+    ]);
+  }
+
+  test_error_undefinedMethod_OK_null() async {
+    addTestFile(r'''
+main() {
+  null.foo();
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+    _assertUnresolvedMethodInvocation('foo();');
+  }
+
+  test_error_undefinedMethod_private() async {
+    newFile('/test/lib/a.dart', content: r'''
+class A {
+  void _foo(int _) {}
+}
+''');
+    addTestFile(r'''
+import 'a.dart';
+
+class B extends A {
+  main() {
+    _foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+    ]);
+    _assertUnresolvedMethodInvocation('_foo(0);');
+  }
+
+  test_error_undefinedMethod_typeLiteral_cascadeTarget() async {
+    addTestFile(r'''
+class C {
+  static void foo() {}
+}
+
+main() {
+  C..foo();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+    ]);
+  }
+
+  test_error_undefinedMethod_typeLiteral_conditional() async {
+    // When applied to a type literal, the conditional access operator '?.'
+    // cannot be used to access instance methods of Type.
+    addTestFile(r'''
+class A {}
+main() {
+  A?.toString();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_METHOD,
+    ]);
+  }
+
+  test_error_undefinedSuperMethod() async {
+    addTestFile(r'''
+class A {}
+
+class B extends A {
+  void foo(int _) {
+    super.foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNDEFINED_SUPER_METHOD,
+    ]);
+    _assertUnresolvedMethodInvocation('foo(0);');
+    assertSuperExpression(findNode.super_('super.foo'));
+  }
+
+  test_error_unqualifiedReferenceToNonLocalStaticMember_method() async {
+    addTestFile(r'''
+class A {
+  static void foo() {}
+}
+
+class B extends A {
+  main() {
+    foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.UNQUALIFIED_REFERENCE_TO_NON_LOCAL_STATIC_MEMBER,
+    ]);
+
+    _assertInvalidInvocation(
+      'foo(0)',
+      findElement.method('foo'),
+      expectedNameType: '(int) → void',
+    );
+  }
+
+  /// The primary purpose of this test is to ensure that we are only getting a
+  /// single error generated when the only problem is that an imported file
+  /// does not exist.
+  test_error_uriDoesNotExist_prefixed() async {
+    addTestFile(r'''
+import 'missing.dart' as p;
+
+main() {
+  p.foo(1);
+  p.bar(2);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      CompileTimeErrorCode.URI_DOES_NOT_EXIST,
+    ]);
+    _assertUnresolvedMethodInvocation('foo(1);');
+    _assertUnresolvedMethodInvocation('bar(2);');
+  }
+
+  /// The primary purpose of this test is to ensure that we are only getting a
+  /// single error generated when the only problem is that an imported file
+  /// does not exist.
+  test_error_uriDoesNotExist_show() async {
+    addTestFile(r'''
+import 'missing.dart' show foo, bar;
+
+main() {
+  foo(1);
+  bar(2);
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      CompileTimeErrorCode.URI_DOES_NOT_EXIST,
+    ]);
+    _assertUnresolvedMethodInvocation('foo(1);');
+    _assertUnresolvedMethodInvocation('bar(2);');
+  }
+
+  test_error_useOfVoidResult_name_getter() async {
+    addTestFile(r'''
+class C<T>{
+  T foo;
+}
+
+main(C<void> c) {
+  c.foo();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticWarningCode.USE_OF_VOID_RESULT,
+    ]);
+    _assertInvalidInvocation(
+      'c.foo()',
+      findElement.getter('foo'),
+      expectedNameType: 'void',
+    );
+  }
+
+  test_error_useOfVoidResult_name_localVariable() async {
+    addTestFile(r'''
+main() {
+  void foo;
+  foo();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticWarningCode.USE_OF_VOID_RESULT,
+    ]);
+    _assertInvalidInvocation(
+      'foo()',
+      findElement.localVar('foo'),
+      expectedNameType: 'void',
+    );
+  }
+
+  test_error_useOfVoidResult_name_topFunction() async {
+    addTestFile(r'''
+void foo() {}
+
+main() {
+  foo()();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticWarningCode.USE_OF_VOID_RESULT,
+    ]);
+    assertMethodInvocation(
+      findNode.methodInvocation('foo()()'),
+      findElement.topFunction('foo'),
+      '() → void',
+    );
+  }
+
+  test_error_useOfVoidResult_name_topVariable() async {
+    addTestFile(r'''
+void foo;
+
+main() {
+  foo();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticWarningCode.USE_OF_VOID_RESULT,
+    ]);
+    _assertInvalidInvocation(
+      'foo()',
+      findElement.topGet('foo'),
+      expectedNameType: 'void',
+    );
+  }
+
+  test_error_useOfVoidResult_receiver() async {
+    addTestFile(r'''
+main() {
+  void foo;
+  foo.toString();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticWarningCode.USE_OF_VOID_RESULT,
+    ]);
+    // TODO(scheglov) Resolve fully, or don't resolve at all.
+    assertMethodInvocation(
+      findNode.methodInvocation('toString()'),
+      null,
+      '() → String',
+    );
+  }
+
+  test_error_useOfVoidResult_receiver_cascade() async {
+    addTestFile(r'''
+main() {
+  void foo;
+  foo..toString();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticWarningCode.USE_OF_VOID_RESULT,
+    ]);
+    // TODO(scheglov) Resolve fully, or don't resolve at all.
+    assertMethodInvocation(
+      findNode.methodInvocation('toString()'),
+      null,
+      '() → String',
+    );
+  }
+
+  test_error_useOfVoidResult_receiver_withNull() async {
+    addTestFile(r'''
+main() {
+  void foo;
+  foo?.toString();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticWarningCode.USE_OF_VOID_RESULT,
+    ]);
+    // TODO(scheglov) Resolve fully, or don't resolve at all.
+    assertMethodInvocation(
+      findNode.methodInvocation('toString()'),
+      null,
+      '() → String',
+    );
+  }
+
+  test_error_wrongNumberOfTypeArgumentsMethod_01() async {
+    addTestFile(r'''
+void foo() {}
+
+main() {
+  foo<int>();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.WRONG_NUMBER_OF_TYPE_ARGUMENTS_METHOD,
+    ]);
+    assertMethodInvocation(
+      findNode.methodInvocation('foo<int>()'),
+      findElement.topFunction('foo'),
+      '() → void',
+    );
+    assertTypeName(findNode.typeName('int>'), intElement, 'int');
+  }
+
+  test_error_wrongNumberOfTypeArgumentsMethod_21() async {
+    addTestFile(r'''
+Map<T, U> foo<T extends num, U>() => null;
+
+main() {
+  foo<int>();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      StaticTypeWarningCode.WRONG_NUMBER_OF_TYPE_ARGUMENTS_METHOD,
+    ]);
+    assertMethodInvocation(
+      findNode.methodInvocation('foo<int>()'),
+      findElement.topFunction('foo'),
+      '() → Map<num, dynamic>',
+    );
+    assertTypeName(findNode.typeName('int>'), intElement, 'int');
+  }
+
+  test_hasReceiver_class_staticGetter() async {
+    addTestFile(r'''
+class C {
+  static double Function(int) get foo => null;
+}
+
+main() {
+  C.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0);');
+    assertMethodInvocation(
+      invocation,
+      findElement.getter('foo'),
+      '(int) → double',
+    );
+    assertClassRef(invocation.target, findElement.class_('C'));
+  }
+
+  test_hasReceiver_class_staticMethod() async {
+    addTestFile(r'''
+class C {
+  static void foo(int _) {}
+}
+
+main() {
+  C.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0);');
+    assertMethodInvocation(
+      invocation,
+      findElement.method('foo'),
+      '(int) → void',
+    );
+    assertClassRef(invocation.target, findElement.class_('C'));
+  }
+
+  test_hasReceiver_deferredImportPrefix_loadLibrary() async {
+    addTestFile(r'''
+import 'dart:math' deferred as math;
+
+main() {
+  math.loadLibrary();
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var import = _importFinder('dart:math');
+
+    var invocation = findNode.methodInvocation('loadLibrary()');
+    assertMethodInvocation(
+      invocation,
+      import.importedLibrary.loadLibraryFunction,
+      '() → Future<dynamic>',
+    );
+    assertImportPrefix(invocation.target, import.prefix);
+  }
+
+  test_hasReceiver_functionTyped_call() async {
+    addTestFile(r'''
+void foo(int _) {}
+
+main() {
+  foo.call(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('call(0)');
+    assertMethodInvocation(
+      invocation,
+      null,
+      '(int) → void',
+    );
+    assertElement(invocation.target, findElement.topFunction('foo'));
+    assertType(invocation.target, '(int) → void');
+  }
+
+  test_hasReceiver_importPrefix_topFunction() async {
+    newFile('/test/lib/a.dart', content: r'''
+T foo<T extends num>(T a, T b) => a;
+''');
+
+    addTestFile(r'''
+import 'a.dart' as prefix;
+
+main() {
+  prefix.foo(1, 2);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var import = _importFinder('package:test/a.dart');
+
+    var invocation = findNode.methodInvocation('foo(1, 2)');
+    assertMethodInvocation(
+      invocation,
+      import.topFunction('foo'),
+      '(int, int) → int',
+    );
+    assertImportPrefix(invocation.target, import.prefix);
+  }
+
+  test_hasReceiver_importPrefix_topGetter() async {
+    newFile('/test/lib/a.dart', content: r'''
+T Function<T>(T a, T b) get foo => null;
+''');
+
+    addTestFile(r'''
+import 'a.dart' as prefix;
+
+main() {
+  prefix.foo(1, 2);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var import = _importFinder('package:test/a.dart');
+
+    var invocation = findNode.methodInvocation('foo(1, 2)');
+    assertMethodInvocation(
+      invocation,
+      import.topGetter('foo'),
+      '(int, int) → int',
+    );
+    assertImportPrefix(invocation.target, import.prefix);
+  }
+
+  test_hasReceiver_instance_Function_call_localVariable() async {
+    addTestFile(r'''
+void main() {
+  Function foo;
+
+  foo.call(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+    _assertInvalidInvocation('call(0)', null);
+  }
+
+  test_hasReceiver_instance_Function_call_topVariable() async {
+    addTestFile(r'''
+Function foo;
+
+void main() {
+  foo.call(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+    _assertInvalidInvocation('call(0)', null);
+  }
+
+  test_hasReceiver_instance_getter() async {
+    addTestFile(r'''
+class C {
+  double Function(int) get foo => null;
+}
+
+main(C c) {
+  c.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0);');
+    assertMethodInvocation(
+      invocation,
+      findElement.getter('foo'),
+      '(int) → double',
+    );
+  }
+
+  test_hasReceiver_instance_method() async {
+    addTestFile(r'''
+class C {
+  void foo(int _) {}
+}
+
+main(C c) {
+  c.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0);');
+    assertMethodInvocation(
+      invocation,
+      findElement.method('foo'),
+      '(int) → void',
+    );
+  }
+
+  test_hasReceiver_instance_method_issue30552() async {
+    addTestFile(r'''
+abstract class I1 {
+  void foo(int i);
+}
+
+abstract class I2 {
+  void foo(Object o);
+}
+
+abstract class C implements I1, I2 {}
+
+class D extends C {
+  void foo(Object o) {}
+}
+
+void main(C c) {
+  c.foo('hi');
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation("foo('hi')");
+    assertMethodInvocation(
+      invocation,
+      findElement.method('foo', of: 'I2'),
+      '(Object) → void',
+    );
+  }
+
+  test_hasReceiver_instance_typeParameter() async {
+    addTestFile(r'''
+class A {
+  void foo(int _) {}
+}
+
+class C<T extends A> {
+  T a;
+  
+  main() {
+    a.foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0);');
+    assertMethodInvocation(
+      invocation,
+      findElement.method('foo'),
+      '(int) → void',
+    );
+  }
+
+  test_hasReceiver_prefixed_class_staticGetter() async {
+    newFile('/test/lib/a.dart', content: r'''
+class C {
+  static double Function(int) get foo => null;
+}
+''');
+
+    addTestFile(r'''
+import 'a.dart' as prefix;
+
+main() {
+  prefix.C.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var import = _importFinder('package:test/a.dart');
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      import.class_('C').getGetter('foo'),
+      '(int) → double',
+    );
+
+    PrefixedIdentifier target = invocation.target;
+    assertImportPrefix(target.prefix, import.prefix);
+    assertClassRef(target.identifier, import.class_('C'));
+  }
+
+  test_hasReceiver_prefixed_class_staticMethod() async {
+    newFile('/test/lib/a.dart', content: r'''
+class C {
+  static void foo(int _) => null;
+}
+''');
+
+    addTestFile(r'''
+import 'a.dart' as prefix;
+
+main() {
+  prefix.C.foo(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var import = _importFinder('package:test/a.dart');
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      import.class_('C').getMethod('foo'),
+      '(int) → void',
+    );
+
+    PrefixedIdentifier target = invocation.target;
+    assertImportPrefix(target.prefix, import.prefix);
+    assertClassRef(target.identifier, import.class_('C'));
+  }
+
+  test_hasReceiver_super_getter() async {
+    addTestFile(r'''
+class A {
+  double Function(int) get foo => null;
+}
+
+class B extends A {
+  void bar() {
+    super.foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0);');
+    assertMethodInvocation(
+      invocation,
+      findElement.getter('foo', of: 'A'),
+      '(int) → double',
+    );
+    assertSuperExpression(invocation.target);
+  }
+
+  test_hasReceiver_super_method() async {
+    addTestFile(r'''
+class A {
+  void foo(int _) {}
+}
+
+class B extends A {
+  void foo(int _) {
+    super.foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0);');
+    assertMethodInvocation(
+      invocation,
+      findElement.method('foo', of: 'A'),
+      '(int) → void',
+    );
+    assertSuperExpression(invocation.target);
+  }
+
+  test_namedArgument() async {
+    addTestFile(r'''
+void foo({int a, bool b}) {}
+
+main() {
+  foo(b: false, a: 0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(b:');
+    assertMethodInvocation(
+      invocation,
+      findElement.topFunction('foo'),
+      '({a: int, b: bool}) → void',
+    );
+    assertNamedParameterRef('b: false', 'b');
+    assertNamedParameterRef('a: 0', 'a');
+  }
+
+  test_noReceiver_getter_superClass() async {
+    addTestFile(r'''
+class A {
+  double Function(int) get foo => null;
+}
+
+class B extends A {
+  void bar() {
+    foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      findElement.getter('foo'),
+      '(int) → double',
+    );
+  }
+
+  test_noReceiver_getter_thisClass() async {
+    addTestFile(r'''
+class C {
+  double Function(int) get foo => null;
+
+  void bar() {
+    foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      findElement.getter('foo'),
+      '(int) → double',
+    );
+  }
+
+  test_noReceiver_importPrefix() async {
+    addTestFile(r'''
+import 'dart:math' as math;
+
+main() {
+  math();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      CompileTimeErrorCode.PREFIX_IDENTIFIER_NOT_FOLLOWED_BY_DOT,
+    ]);
+    assertElement(findNode.simple('math()'), findElement.prefix('math'));
+  }
+
+  test_noReceiver_localFunction() async {
+    addTestFile(r'''
+main() {
+  void foo(int _) {}
+
+  foo(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      findElement.localFunction('foo'),
+      '(int) → void',
+    );
+  }
+
+  test_noReceiver_localVariable() async {
+    addTestFile(r'''
+main() {
+  void Function(int) foo;
+
+  foo(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      findElement.localVar('foo'),
+      '(int) → void',
+    );
+  }
+
+  test_noReceiver_localVariable_call() async {
+    addTestFile(r'''
+class C {
+  void call(int _) {}
+}
+
+main(C c) {
+  c(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('c(0);');
+    assertMethodInvocation(
+      invocation,
+      findElement.parameter('c'),
+      '(int) → void',
+    );
+  }
+
+  test_noReceiver_localVariable_promoted() async {
+    addTestFile(r'''
+main() {
+  var foo;
+  if (foo is void Function(int)) {
+    foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      findElement.localVar('foo'),
+      '(int) → void',
+    );
+  }
+
+  test_noReceiver_method_superClass() async {
+    addTestFile(r'''
+class A {
+  void foo(int _) {}
+}
+
+class B extends A {
+  void bar() {
+    foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      findElement.method('foo'),
+      '(int) → void',
+    );
+  }
+
+  test_noReceiver_method_thisClass() async {
+    addTestFile(r'''
+class C {
+  void foo(int _) {}
+
+  void bar() {
+    foo(0);
+  }
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      findElement.method('foo'),
+      '(int) → void',
+    );
+  }
+
+  test_noReceiver_topFunction() async {
+    addTestFile(r'''
+void foo(int _) {}
+
+main() {
+  foo(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      findElement.topFunction('foo'),
+      '(int) → void',
+    );
+  }
+
+  test_noReceiver_topGetter() async {
+    addTestFile(r'''
+double Function(int) get foo => null;
+
+main() {
+  foo(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      findElement.topGet('foo'),
+      '(int) → double',
+    );
+  }
+
+  test_noReceiver_topVariable() async {
+    addTestFile(r'''
+void Function(int) foo;
+
+main() {
+  foo(0);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('foo(0)');
+    assertMethodInvocation(
+      invocation,
+      findElement.topGet('foo'),
+      '(int) → void',
+    );
+  }
+
+  test_objectMethodOnDynamic() async {
+    addTestFile(r'''
+main() {
+  var v;
+  v.toString(42);
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+    _assertUnresolvedMethodInvocation('toString(42);');
+  }
+
+  test_objectMethodOnFunction() async {
+    addTestFile(r'''
+void f() {}
+
+main() {
+  f.toString();
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var invocation = findNode.methodInvocation('toString();');
+    assertMethodInvocation(
+      invocation,
+      typeProvider.objectType.getMethod('toString'),
+      '() → String',
+    );
+  }
+
+  void _assertInvalidInvocation(String search, Element expectedElement,
+      {String expectedNameType, bool dynamicNameType: false}) {
+    var invocation = findNode.methodInvocation(search);
+    if (dynamicNameType) {
+      assertTypeDynamic(invocation.methodName);
+    }
+    // TODO(scheglov) I think `invokeType` should be `null`.
+    assertMethodInvocation(
+      invocation,
+      expectedElement,
+      'dynamic',
+      expectedNameType: expectedNameType,
+      expectedType: 'dynamic',
+    );
+  }
+
+  void _assertUnresolvedMethodInvocation(String search) {
+    // TODO(scheglov) clean up
+    _assertInvalidInvocation(search, null);
+//    var invocation = findNode.methodInvocation(search);
+//    assertTypeDynamic(invocation.methodName);
+//    // TODO(scheglov) I think `invokeType` should be `null`.
+//    assertMethodInvocation(
+//      invocation,
+//      null,
+//      'dynamic',
+//      expectedType: 'dynamic',
+//    );
+  }
+
+  _ImportElementFinder _importFinder(String targetUri) {
+    var import = findElement.import(targetUri);
+    return _ImportElementFinder(import);
+  }
+}
+
+class _ImportElementFinder {
+  final ImportElement import;
+
+  _ImportElementFinder(this.import);
+
+  CompilationUnitElement get definingUnit {
+    return importedLibrary.definingCompilationUnit;
+  }
+
+  LibraryElement get importedLibrary => import.importedLibrary;
+
+  PrefixElement get prefix => import.prefix;
+
+  ClassElement class_(String name) {
+    for (var class_ in definingUnit.types) {
+      if (class_.name == name) {
+        return class_;
+      }
+    }
+    fail('Not found class: $name');
+  }
+
+  FunctionElement topFunction(String name) {
+    for (var function in definingUnit.functions) {
+      if (function.name == name) {
+        return function;
+      }
+    }
+    fail('Not found top-level function: $name');
+  }
+
+  PropertyAccessorElement topGetter(String name) {
+    for (var accessor in definingUnit.accessors) {
+      if (accessor.name == name && accessor.isGetter) {
+        return accessor;
+      }
+    }
+    fail('Not found top-level getter: $name');
+  }
+}
diff --git a/pkg/analyzer/test/src/dart/resolution/mixin_test.dart b/pkg/analyzer/test/src/dart/resolution/mixin_test.dart
index 40ae57a..bc792f0 100644
--- a/pkg/analyzer/test/src/dart/resolution/mixin_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/mixin_test.dart
@@ -23,7 +23,7 @@
 class MixinDriverResolutionTest extends DriverResolutionTest
     with MixinResolutionMixin {}
 
-abstract class MixinResolutionMixin implements ResolutionTest {
+mixin MixinResolutionMixin implements ResolutionTest {
   test_accessor_getter() async {
     addTestFile(r'''
 mixin M {
@@ -1004,6 +1004,28 @@
     ]);
   }
 
+  test_error_mixinApplicationNoConcreteSuperInvokedMember_OK_hasNSM() async {
+    addTestFile(r'''
+abstract class A {
+  void foo();
+}
+
+mixin M on A {
+  void bar() {
+    super.foo();
+  }
+}
+
+class C implements A {
+  noSuchMethod(_) {}
+}
+
+class X extends C with M {}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+  }
+
   test_error_mixinApplicationNoConcreteSuperInvokedMember_OK_inPreviousMixin() async {
     addTestFile(r'''
 abstract class A {
@@ -1134,6 +1156,30 @@
     ]);
   }
 
+  test_error_mixinApplicationNotImplementedInterface_noMemberErrors() async {
+    addTestFile(r'''
+class A {
+  void foo() {}
+}
+
+mixin M on A {
+  void bar() {
+    super.foo();
+  }
+}
+
+class C {
+  noSuchMethod(_) {}
+}
+
+class X = C with M;
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      CompileTimeErrorCode.MIXIN_APPLICATION_NOT_IMPLEMENTED_INTERFACE,
+    ]);
+  }
+
   test_error_mixinApplicationNotImplementedInterface_OK_0() async {
     addTestFile(r'''
 mixin M {}
@@ -1268,6 +1314,24 @@
     assertInstanceCreation(creation, m, 'M', constructorName: 'named');
   }
 
+  test_error_mixinInstantiate_undefined() async {
+    addTestFile(r'''
+mixin M {}
+
+main() {
+  new M.named();
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([
+      CompileTimeErrorCode.MIXIN_INSTANTIATE,
+    ]);
+
+    var creation = findNode.instanceCreation('M.named();');
+    var m = findElement.mixin('M');
+    assertElement(creation.constructorName.type.name, m);
+  }
+
   test_error_onClause_deferredClass() async {
     addTestFile(r'''
 import 'dart:math' deferred as math;
diff --git a/pkg/analyzer/test/src/dart/resolution/optional_const_test.dart b/pkg/analyzer/test/src/dart/resolution/optional_const_test.dart
index 6b9d107..df32638 100644
--- a/pkg/analyzer/test/src/dart/resolution/optional_const_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/optional_const_test.dart
@@ -22,7 +22,7 @@
 class OptionalConstDriverResolutionTest extends DriverResolutionTest
     with OptionalConstMixin {}
 
-abstract class OptionalConstMixin implements ResolutionTest {
+mixin OptionalConstMixin implements ResolutionTest {
   Map<String, LibraryElement> libraries = {};
 
   LibraryElement get libraryA => libraries['package:test/a.dart'];
diff --git a/pkg/analyzer/test/src/dart/resolution/property_access_test.dart b/pkg/analyzer/test/src/dart/resolution/property_access_test.dart
new file mode 100644
index 0000000..15dfcee
--- /dev/null
+++ b/pkg/analyzer/test/src/dart/resolution/property_access_test.dart
@@ -0,0 +1,105 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analyzer/src/error/codes.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'driver_resolution.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(PropertyAccessResolutionTest);
+  });
+}
+
+@reflectiveTest
+class PropertyAccessResolutionTest extends DriverResolutionTest {
+  test_get_error_abstractSuperMemberReference_mixinHasNoSuchMethod() async {
+    addTestFile('''
+class A {
+  int get foo;
+  noSuchMethod(im) => 1;
+}
+
+class B extends Object with A {
+  get foo => super.foo; // ref
+  noSuchMethod(im) => 2;
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([CompileTimeErrorCode.ABSTRACT_SUPER_MEMBER_REFERENCE]);
+
+    var access = findNode.propertyAccess('foo; // ref');
+    assertPropertyAccess(access, findElement.getter('foo', of: 'A'), 'int');
+    assertSuperExpression(access.target);
+  }
+
+  test_get_error_abstractSuperMemberReference_OK_superHasNoSuchMethod() async {
+    addTestFile(r'''
+class A {
+  int get foo;
+  noSuchMethod(im) => 1;
+}
+
+class B extends A {
+  get foo => super.foo; // ref
+  noSuchMethod(im) => 2;
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var access = findNode.propertyAccess('super.foo; // ref');
+    assertPropertyAccess(access, findElement.getter('foo', of: 'A'), 'int');
+    assertSuperExpression(access.target);
+  }
+
+  test_set_error_abstractSuperMemberReference_mixinHasNoSuchMethod() async {
+    addTestFile('''
+class A {
+  set foo(int a);
+  noSuchMethod(im) {}
+}
+
+class B extends Object with A {
+  set foo(v) => super.foo = v; // ref
+  noSuchMethod(im) {}
+}
+''');
+    await resolveTestFile();
+    assertTestErrors([CompileTimeErrorCode.ABSTRACT_SUPER_MEMBER_REFERENCE]);
+
+    var access = findNode.propertyAccess('foo = v; // ref');
+    assertPropertyAccess(
+      access,
+      findElement.setter('foo', className: 'A'),
+      'int',
+    );
+    assertSuperExpression(access.target);
+  }
+
+  test_set_error_abstractSuperMemberReference_OK_superHasNoSuchMethod() async {
+    addTestFile(r'''
+class A {
+  set foo(int a);
+  noSuchMethod(im) => 1;
+}
+
+class B extends A {
+  set foo(v) => super.foo = v; // ref
+  noSuchMethod(im) => 2;
+}
+''');
+    await resolveTestFile();
+    assertNoTestErrors();
+
+    var access = findNode.propertyAccess('foo = v; // ref');
+    assertPropertyAccess(
+      access,
+      findElement.setter('foo', className: 'A'),
+      'int',
+    );
+    assertSuperExpression(access.target);
+  }
+}
diff --git a/pkg/analyzer/test/src/dart/resolution/resolution.dart b/pkg/analyzer/test/src/dart/resolution/resolution.dart
index f6fdc6f..a762eb6 100644
--- a/pkg/analyzer/test/src/dart/resolution/resolution.dart
+++ b/pkg/analyzer/test/src/dart/resolution/resolution.dart
@@ -29,7 +29,7 @@
 final isVoidType = new TypeMatcher<VoidTypeImpl>();
 
 /// Base for resolution tests.
-abstract class ResolutionTest implements ResourceProviderMixin {
+mixin ResolutionTest implements ResourceProviderMixin {
   TestAnalysisResult result;
   FindNode findNode;
   FindElement findElement;
@@ -61,6 +61,16 @@
     newFile('/test/lib/test.dart', content: content);
   }
 
+  /// Assert that the given [identifier] is a reference to a class, in the
+  /// form that is not a separate expression, e.g. in a static method
+  /// invocation like `C.staticMethod()`, or a type annotation `C c = null`.
+  void assertClassRef(
+      SimpleIdentifier identifier, ClassElement expectedElement) {
+    assertElement(identifier, expectedElement);
+    // TODO(scheglov) Enforce this.
+//    assertTypeNull(identifier);
+  }
+
   void assertConstructorElement(
       ConstructorElement expected, ConstructorElement actual) {
     if (expected is ConstructorMember && actual is ConstructorMember) {
@@ -168,6 +178,11 @@
     assertType(ref, type);
   }
 
+  void assertImportPrefix(SimpleIdentifier identifier, PrefixElement element) {
+    assertElement(identifier, element);
+    assertTypeNull(identifier);
+  }
+
   void assertInstanceCreation(InstanceCreationExpression creation,
       ClassElement expectedClassElement, String expectedType,
       {String constructorName,
@@ -232,10 +247,60 @@
     expect(actual.baseElement, same(expectedBase));
   }
 
+  void assertMethodInvocation(MethodInvocation invocation,
+      Element expectedElement, String expectedInvokeType,
+      {String expectedNameType, String expectedType}) {
+    // TODO(scheglov) Check for Member.
+    var element = invocation.methodName.staticElement;
+    if (element is Member) {
+      element = (element as Member).baseElement;
+      expect(element, same(expectedElement));
+    } else {
+      assertElement(invocation.methodName, expectedElement);
+    }
+
+    // TODO(scheglov) Should we enforce this?
+//    if (expectedNameType == null) {
+//      if (expectedElement is ExecutableElement) {
+//        expectedNameType = expectedElement.type.displayName;
+//      } else if (expectedElement is VariableElement) {
+//        expectedNameType = expectedElement.type.displayName;
+//      }
+//    }
+//    assertType(invocation.methodName, expectedNameType);
+
+    assertInvokeType(invocation, expectedInvokeType);
+
+    expectedType ??= _extractReturnType(expectedInvokeType);
+    assertType(invocation, expectedType);
+  }
+
+  void assertPropertyAccess(
+    PropertyAccess access,
+    Element expectedElement,
+    String expectedType,
+  ) {
+    assertElement(access.propertyName, expectedElement);
+    assertType(access, expectedType);
+  }
+
+  void assertNamedParameterRef(String search, String name) {
+    var ref = findNode.simple(search);
+    assertElement(ref, findElement.parameter(name));
+    assertTypeNull(ref);
+  }
+
   void assertNoTestErrors() {
     assertTestErrors(const <ErrorCode>[]);
   }
 
+  void assertSuperExpression(SuperExpression superExpression) {
+    // TODO(scheglov) I think `super` does not have type itself.
+    // It is just a signal to look for implemented method in the supertype.
+    // With mixins there isn't a type anyway.
+//    assertTypeNull(superExpression);
+  }
+
   void assertTestErrors(List<ErrorCode> expected) {
     assertErrors(result.errors, expected);
   }
@@ -332,6 +397,12 @@
     }
     return element;
   }
+
+  static String _extractReturnType(String invokeType) {
+    int arrowIndex = invokeType.indexOf('→');
+    expect(arrowIndex, isNonNegative);
+    return invokeType.substring(arrowIndex + 1).trim();
+  }
 }
 
 class TestAnalysisResult {
diff --git a/pkg/analyzer/test/src/dart/resolution/task_resolution.dart b/pkg/analyzer/test/src/dart/resolution/task_resolution.dart
index 7e02ab4..7c84ed2 100644
--- a/pkg/analyzer/test/src/dart/resolution/task_resolution.dart
+++ b/pkg/analyzer/test/src/dart/resolution/task_resolution.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -9,15 +9,14 @@
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 
 import '../../../generated/analysis_context_factory.dart';
-import '../../context/mock_sdk.dart';
 import 'resolution.dart';
 
 /// Task model based implementation of [ResolutionTest].
-class TaskResolutionTest extends Object
-    with ResourceProviderMixin, ResolutionTest {
+class TaskResolutionTest with ResourceProviderMixin, ResolutionTest {
   DartSdk sdk;
 
   SourceFactory sourceFactory;
diff --git a/pkg/analyzer/test/src/dart/resolution/test_all.dart b/pkg/analyzer/test/src/dart/resolution/test_all.dart
index f0c2ee6..c52454e 100644
--- a/pkg/analyzer/test/src/dart/resolution/test_all.dart
+++ b/pkg/analyzer/test/src/dart/resolution/test_all.dart
@@ -6,7 +6,8 @@
 
 import 'assignment_test.dart' as assignment_test;
 import 'class_test.dart' as class_test;
-import 'optional_const_test.dart' as optional_const_test;
+import 'comment_test.dart' as comment_test;
+import 'constant_test.dart' as constant_test;
 import 'enum_test.dart' as enum_test;
 import 'for_in_test.dart' as for_in_test;
 import 'generic_type_alias_test.dart' as generic_type_alias_test;
@@ -16,13 +17,18 @@
     as instance_member_inference_class_test;
 import 'instance_member_inference_mixin_test.dart'
     as instance_member_inference_mixin_test;
+import 'method_invocation_test.dart' as method_invocation_test;
 import 'mixin_test.dart' as mixin_test;
+import 'optional_const_test.dart' as optional_const_test;
+import 'property_access_test.dart' as property_access_test;
 import 'top_type_inference_test.dart' as top_type_inference_test;
 
 main() {
   defineReflectiveSuite(() {
     assignment_test.main();
     class_test.main();
+    comment_test.main();
+    constant_test.main();
     enum_test.main();
     for_in_test.main();
     generic_type_alias_test.main();
@@ -30,8 +36,10 @@
     instance_creation_test.main();
     instance_member_inference_class_test.main();
     instance_member_inference_mixin_test.main();
+    method_invocation_test.main();
     mixin_test.main();
     optional_const_test.main();
+    property_access_test.main();
     top_type_inference_test.main();
   }, name: 'resolution');
 }
diff --git a/pkg/analyzer/test/src/dart/resolution/top_type_inference_test.dart b/pkg/analyzer/test/src/dart/resolution/top_type_inference_test.dart
index 3b6eb93..3c3defe 100644
--- a/pkg/analyzer/test/src/dart/resolution/top_type_inference_test.dart
+++ b/pkg/analyzer/test/src/dart/resolution/top_type_inference_test.dart
@@ -24,7 +24,7 @@
 class TopTypeInferenceTaskResolutionTest extends TaskResolutionTest
     with TopTypeInstanceMixin {}
 
-abstract class TopTypeInstanceMixin implements ResolutionTest {
+mixin TopTypeInstanceMixin implements ResolutionTest {
   test_referenceInstanceVariable_withDeclaredType() async {
     addTestFile(r'''
 class A {
diff --git a/pkg/analyzer/test/src/dart/sdk/patch_test.dart b/pkg/analyzer/test/src/dart/sdk/patch_test.dart
index 6ffbf04..dd57aa6 100644
--- a/pkg/analyzer/test/src/dart/sdk/patch_test.dart
+++ b/pkg/analyzer/test/src/dart/sdk/patch_test.dart
@@ -5,11 +5,11 @@
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/dart/sdk/patch.dart';
 import 'package:analyzer/src/dart/sdk/sdk.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -20,8 +20,7 @@
 }
 
 @reflectiveTest
-class SdkPatcherTest {
-  MemoryResourceProvider provider = new MemoryResourceProvider();
+class SdkPatcherTest with ResourceProviderMixin {
   Folder sdkFolder;
   FolderBasedDartSdk sdk;
 
@@ -29,7 +28,7 @@
   RecordingErrorListener listener = new RecordingErrorListener();
 
   void setUp() {
-    sdkFolder = provider.getFolder(_p('/sdk'));
+    sdkFolder = getFolder('/sdk');
   }
 
   test_class_constructor_append_fail_notPrivate_named() {
@@ -717,12 +716,12 @@
 };''');
       _createSdk();
       var patchPaths = {
-        'dart:test': [_p('/sdk/lib/does_not_exist.dart')]
+        'dart:test': [convertPath('/sdk/lib/does_not_exist.dart')]
       };
-      File file = provider.newFile(_p('/sdk/lib/test/test.dart'), '');
+      File file = newFile('/sdk/lib/test/test.dart');
       Source source = file.createSource(Uri.parse('dart:test'));
       CompilationUnit unit = SdkPatcher.parse(source, listener);
-      patcher.patch(provider, patchPaths, listener, source, unit);
+      patcher.patch(resourceProvider, patchPaths, listener, source, unit);
     }, throwsArgumentError);
   }
 
@@ -733,16 +732,16 @@
     'internal/internal.dart'),
 };''');
     var patchPaths = {
-      'dart:_internal': [_p('/sdk/lib/internal/internal_patch.dart')]
+      'dart:_internal': [convertPath('/sdk/lib/internal/internal_patch.dart')]
     };
-    File file = provider.newFile(_p('/sdk/lib/internal/internal.dart'), r'''
+    File file = newFile('/sdk/lib/internal/internal.dart', content: r'''
 library dart._internal;
 class A {}
 class B {
   B();
 }
 ''');
-    provider.newFile(_p('/sdk/lib/internal/internal_patch.dart'), r'''
+    newFile(convertPath('/sdk/lib/internal/internal_patch.dart'), content: r'''
 @patch
 class B {
   int newField;
@@ -757,7 +756,7 @@
 
     Source source = file.createSource(Uri.parse('dart:_internal'));
     CompilationUnit unit = SdkPatcher.parse(source, listener);
-    patcher.patch(provider, patchPaths, listener, source, unit);
+    patcher.patch(resourceProvider, patchPaths, listener, source, unit);
     _assertUnitCode(
         unit,
         'library dart._internal; class A {} '
@@ -782,12 +781,12 @@
     patches: {VM_PLATFORM: ['test/test_patch.dart']}),
 };''');
     var patchPaths = {
-      'dart:test': [_p('/sdk/lib/test/test_patch.dart')]
+      'dart:test': [convertPath('/sdk/lib/test/test_patch.dart')]
     };
-    File fileLib = provider.newFile(_p('/sdk/lib/test/test.dart'), baseLibCode);
+    File fileLib = newFile('/sdk/lib/test/test.dart', content: baseLibCode);
     File filePart =
-        provider.newFile(_p('/sdk/lib/test/test_part.dart'), basePartCode);
-    provider.newFile(_p('/sdk/lib/test/test_patch.dart'), r'''
+        newFile('/sdk/lib/test/test_part.dart', content: basePartCode);
+    newFile('/sdk/lib/test/test_patch.dart', content: r'''
 import 'foo.dart';
 
 @patch
@@ -809,7 +808,7 @@
       Uri uri = Uri.parse('dart:test');
       Source source = fileLib.createSource(uri);
       CompilationUnit unit = SdkPatcher.parse(source, listener);
-      patcher.patch(provider, patchPaths, listener, source, unit);
+      patcher.patch(resourceProvider, patchPaths, listener, source, unit);
       _assertUnitCode(
           unit,
           "library test; part 'test_part.dart'; import 'foo.dart'; "
@@ -820,7 +819,7 @@
       Uri uri = Uri.parse('dart:test/test_part.dart');
       Source source = filePart.createSource(uri);
       CompilationUnit unit = SdkPatcher.parse(source, listener);
-      patcher.patch(provider, patchPaths, listener, source, unit);
+      patcher.patch(resourceProvider, patchPaths, listener, source, unit);
       _assertUnitCode(unit, "part of test; class B {int _b() => 1;}");
     }
   }
@@ -1053,7 +1052,7 @@
   }
 
   void _createSdk() {
-    sdk = new FolderBasedDartSdk(provider, sdkFolder);
+    sdk = new FolderBasedDartSdk(resourceProvider, sdkFolder);
     sdk.analysisOptions = new AnalysisOptionsImpl();
   }
 
@@ -1064,24 +1063,24 @@
     'test/test.dart'),
 };''');
     var patchPaths = {
-      'dart:test': [_p('/sdk/lib/test/test_patch.dart')]
+      'dart:test': [convertPath('/sdk/lib/test/test_patch.dart')]
     };
-    File file = provider.newFile(_p('/sdk/lib/test/test.dart'), baseCode);
-    provider.newFile(_p('/sdk/lib/test/test_patch.dart'), patchCode);
+    File file = newFile('/sdk/lib/test/test.dart', content: baseCode);
+    newFile('/sdk/lib/test/test_patch.dart', content: patchCode);
 
     _createSdk();
 
     Source source = file.createSource(Uri.parse('dart:test'));
     CompilationUnit unit = SdkPatcher.parse(source, listener);
-    patcher.patch(provider, patchPaths, listener, source, unit);
+    patcher.patch(resourceProvider, patchPaths, listener, source, unit);
     return unit;
   }
 
-  String _p(String path) => provider.convertPath(path);
-
   void _setSdkLibraries(String code) {
-    provider.newFile(
-        _p('/sdk/lib/_internal/sdk_library_metadata/lib/libraries.dart'), code);
+    newFile(
+      '/sdk/lib/_internal/sdk_library_metadata/lib/libraries.dart',
+      content: code,
+    );
   }
 
   static void _assertPrevNextToken(Token prev, Token next) {
diff --git a/pkg/analyzer/test/src/dart/sdk/sdk_test.dart b/pkg/analyzer/test/src/dart/sdk/sdk_test.dart
index cfc0540..b795f9d 100644
--- a/pkg/analyzer/test/src/dart/sdk/sdk_test.dart
+++ b/pkg/analyzer/test/src/dart/sdk/sdk_test.dart
@@ -110,7 +110,7 @@
 }
 
 @reflectiveTest
-class FolderBasedDartSdkTest extends Object with ResourceProviderMixin {
+class FolderBasedDartSdkTest with ResourceProviderMixin {
   void test_addExtensions() {
     FolderBasedDartSdk sdk = _createDartSdk();
     String uri = 'dart:my.internal';
@@ -315,7 +315,7 @@
 }
 
 @reflectiveTest
-class SdkExtensionFinderTest extends Object with ResourceProviderMixin {
+class SdkExtensionFinderTest with ResourceProviderMixin {
   void setUp() {
     newFile('/tmp/_sdkext', content: r'''
 {
diff --git a/pkg/analyzer/test/src/fasta/recovery/code_order_test.dart b/pkg/analyzer/test/src/fasta/recovery/code_order_test.dart
index 17b4d06..0958f78 100644
--- a/pkg/analyzer/test/src/fasta/recovery/code_order_test.dart
+++ b/pkg/analyzer/test/src/fasta/recovery/code_order_test.dart
@@ -1,8 +1,8 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/src/dart/error/syntactic_errors.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -341,14 +341,6 @@
 ''');
   }
 
-  void test_multipleOn() {
-    testRecovery('''
-mixin A on B on C {}
-''', [ParserErrorCode.MULTIPLE_ON_CLAUSES], '''
-mixin A on B, C {}
-''');
-  }
-
   void test_multipleImplements() {
     testRecovery('''
 mixin A implements B implements C, D {}
@@ -357,6 +349,14 @@
 ''');
   }
 
+  void test_multipleOn() {
+    testRecovery('''
+mixin A on B on C {}
+''', [ParserErrorCode.MULTIPLE_ON_CLAUSES], '''
+mixin A on B, C {}
+''');
+  }
+
   @failingTest
   void test_typing_implements() {
     testRecovery('''
diff --git a/pkg/analyzer/test/src/fasta/recovery/partial_code/annotation_test.dart b/pkg/analyzer/test/src/fasta/recovery/partial_code/annotation_test.dart
index 06105e3..4087738 100644
--- a/pkg/analyzer/test/src/fasta/recovery/partial_code/annotation_test.dart
+++ b/pkg/analyzer/test/src/fasta/recovery/partial_code/annotation_test.dart
@@ -41,7 +41,13 @@
       [
         new TestDescriptor(
             'ampersand', '@', [ParserErrorCode.MISSING_IDENTIFIER], '@_s_',
-            failing: ['typedef', 'functionNonVoid', 'getter', 'setter']),
+            failing: [
+              'typedef',
+              'functionNonVoid',
+              'getter',
+              'mixin',
+              'setter'
+            ]),
         new TestDescriptor(
             'leftParen', '@a(', [ScannerErrorCode.EXPECTED_TOKEN], '@a()',
             allFailing: true),
diff --git a/pkg/analyzer/test/src/fasta/recovery/partial_code/class_declaration_test.dart b/pkg/analyzer/test/src/fasta/recovery/partial_code/class_declaration_test.dart
index e932751..372ed73 100644
--- a/pkg/analyzer/test/src/fasta/recovery/partial_code/class_declaration_test.dart
+++ b/pkg/analyzer/test/src/fasta/recovery/partial_code/class_declaration_test.dart
@@ -36,7 +36,7 @@
               ],
               'class A extend _s_ {}',
               expectedErrorsInValidCode: [ParserErrorCode.EXPECTED_INSTEAD],
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
               'extends',
               'class A extends',
@@ -45,7 +45,7 @@
                 ParserErrorCode.MISSING_CLASS_BODY
               ],
               'class A extends _s_ {}',
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
               'on',
               'class A on',
@@ -56,7 +56,7 @@
               ],
               'class A on _s_ {}',
               expectedErrorsInValidCode: [ParserErrorCode.EXPECTED_INSTEAD],
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor('extendsBody', 'class A extends {}',
               [ParserErrorCode.EXPECTED_TYPE_NAME], 'class A extends _s_ {}'),
           new TestDescriptor(
@@ -78,7 +78,7 @@
                 ParserErrorCode.MISSING_CLASS_BODY
               ],
               'class A extends B with _s_ {}',
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
               'extendsNameWithBody',
               'class A extends B with {}',
@@ -92,7 +92,7 @@
                 ParserErrorCode.MISSING_CLASS_BODY
               ],
               'class A extends B implements _s_ {}',
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
               'extendsNameImplementsBody',
               'class A extends B implements {}',
@@ -106,7 +106,7 @@
                 ParserErrorCode.MISSING_CLASS_BODY
               ],
               'class A extends B with C implements _s_ {}',
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
               'extendsNameWithNameImplementsBody',
               'class A extends B with C implements {}',
@@ -120,7 +120,7 @@
                 ParserErrorCode.MISSING_CLASS_BODY
               ],
               'class A implements _s_ {}',
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
               'implementsBody',
               'class A implements {}',
@@ -134,7 +134,7 @@
                 ParserErrorCode.MISSING_CLASS_BODY
               ],
               'class A implements B, _s_ {}',
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
               'implementsNameCommaBody',
               'class A implements B, {}',
@@ -149,7 +149,7 @@
                 ParserErrorCode.EXPECTED_TOKEN
               ],
               'class A = _s_ with _s_;',
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
               'equalsName',
               'class A = B',
@@ -164,7 +164,7 @@
                 ParserErrorCode.EXPECTED_TOKEN
               ],
               'class A = B with _s_;',
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
               'equalsNameName',
               'class A = B C',
diff --git a/pkg/analyzer/test/src/fasta/recovery/partial_code/constructor_test.dart b/pkg/analyzer/test/src/fasta/recovery/partial_code/constructor_test.dart
index 3f834fd..d5a265d 100644
--- a/pkg/analyzer/test/src/fasta/recovery/partial_code/constructor_test.dart
+++ b/pkg/analyzer/test/src/fasta/recovery/partial_code/constructor_test.dart
@@ -1,4 +1,8 @@
-import 'package:analyzer/analyzer.dart';
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/src/dart/error/syntactic_errors.dart';
 
diff --git a/pkg/analyzer/test/src/fasta/recovery/partial_code/enum_declaration_test.dart b/pkg/analyzer/test/src/fasta/recovery/partial_code/enum_declaration_test.dart
index 167587a..4f9ccd9 100644
--- a/pkg/analyzer/test/src/fasta/recovery/partial_code/enum_declaration_test.dart
+++ b/pkg/analyzer/test/src/fasta/recovery/partial_code/enum_declaration_test.dart
@@ -50,6 +50,7 @@
                 'typedef',
                 'functionNonVoid',
                 'getter',
+                'mixin',
                 'setter'
               ]),
           new TestDescriptor(
@@ -66,6 +67,7 @@
                 'typedef',
                 'functionNonVoid',
                 'getter',
+                'mixin',
                 'setter'
               ]),
           new TestDescriptor('value', 'enum E {a',
diff --git a/pkg/analyzer/test/src/fasta/recovery/partial_code/mixin_declaration_test.dart b/pkg/analyzer/test/src/fasta/recovery/partial_code/mixin_declaration_test.dart
index 33fe03f..f962b3f 100644
--- a/pkg/analyzer/test/src/fasta/recovery/partial_code/mixin_declaration_test.dart
+++ b/pkg/analyzer/test/src/fasta/recovery/partial_code/mixin_declaration_test.dart
@@ -34,7 +34,7 @@
                 ParserErrorCode.MISSING_CLASS_BODY
               ],
               'mixin A on _s_ {}',
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
               'extend',
               'mixin A extend',
@@ -45,7 +45,7 @@
               ],
               'mixin A extend _s_ {}',
               expectedErrorsInValidCode: [ParserErrorCode.EXPECTED_INSTEAD],
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
               'extends',
               'mixin A extends',
@@ -56,7 +56,7 @@
               ],
               'mixin A extends _s_ {}',
               expectedErrorsInValidCode: [ParserErrorCode.EXPECTED_INSTEAD],
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor('onBody', 'mixin A on {}',
               [ParserErrorCode.EXPECTED_TYPE_NAME], 'mixin A on _s_ {}'),
           new TestDescriptor(
@@ -67,7 +67,7 @@
                 ParserErrorCode.MISSING_CLASS_BODY
               ],
               'mixin A on B, _s_ {}',
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor('onNameCommaBody', 'mixin A on B, {}',
               [ParserErrorCode.EXPECTED_TYPE_NAME], 'mixin A on B, _s_ {}'),
           new TestDescriptor(
@@ -84,9 +84,9 @@
                 ParserErrorCode.MISSING_CLASS_BODY
               ],
               'mixin A on B implements _s_ {}',
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
-              'onNameImplements',
+              'onNameImplementsBody',
               'mixin A on B implements {}',
               [ParserErrorCode.EXPECTED_TYPE_NAME],
               'mixin A on B implements _s_ {}'),
@@ -98,7 +98,7 @@
                 ParserErrorCode.MISSING_CLASS_BODY
               ],
               'mixin A implements _s_ {}',
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
               'implementsBody',
               'mixin A implements {}',
@@ -112,7 +112,7 @@
                 ParserErrorCode.MISSING_CLASS_BODY
               ],
               'mixin A implements B, _s_ {}',
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
           new TestDescriptor(
               'implementsNameCommaBody',
               'mixin A implements B, {}',
diff --git a/pkg/analyzer/test/src/fasta/recovery/partial_code/part_of_directive_test.dart b/pkg/analyzer/test/src/fasta/recovery/partial_code/part_of_directive_test.dart
index 17da7bc..680886f 100644
--- a/pkg/analyzer/test/src/fasta/recovery/partial_code/part_of_directive_test.dart
+++ b/pkg/analyzer/test/src/fasta/recovery/partial_code/part_of_directive_test.dart
@@ -34,7 +34,8 @@
                 ParserErrorCode.EXPECTED_STRING_LITERAL,
                 ParserErrorCode.EXPECTED_TOKEN
               ],
-              'part of "";'),
+              'part of "";',
+              failing: ['mixin']),
         ],
         nonIdentifierSuffixes);
     buildTests(
diff --git a/pkg/analyzer/test/src/fasta/recovery/partial_code/partial_code_support.dart b/pkg/analyzer/test/src/fasta/recovery/partial_code/partial_code_support.dart
index 62a722f..8634b8f 100644
--- a/pkg/analyzer/test/src/fasta/recovery/partial_code/partial_code_support.dart
+++ b/pkg/analyzer/test/src/fasta/recovery/partial_code/partial_code_support.dart
@@ -1,8 +1,8 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/dart/error/syntactic_errors.dart';
 import 'package:test/test.dart';
@@ -46,6 +46,8 @@
    */
   static final List<TestSuffix> declarationSuffixes = <TestSuffix>[
     new TestSuffix('class', 'class A {}'),
+    new TestSuffix('enum', 'enum E { v }'),
+    new TestSuffix('mixin', 'mixin M {}'),
     new TestSuffix('typedef', 'typedef A = B Function(C, D);'),
     new TestSuffix('functionVoid', 'void f() {}'),
     new TestSuffix('functionNonVoid', 'int f() {}'),
diff --git a/pkg/analyzer/test/src/fasta/recovery/partial_code/top_level_variable_test.dart b/pkg/analyzer/test/src/fasta/recovery/partial_code/top_level_variable_test.dart
index e4cfd56..046e36c 100644
--- a/pkg/analyzer/test/src/fasta/recovery/partial_code/top_level_variable_test.dart
+++ b/pkg/analyzer/test/src/fasta/recovery/partial_code/top_level_variable_test.dart
@@ -43,7 +43,7 @@
               CompileTimeErrorCode.CONST_NOT_INITIALIZED
             ],
             "const a;",
-            failing: ['functionNonVoid', 'getter', 'setter'],
+            failing: ['functionNonVoid', 'getter', 'setter', 'mixin'],
             expectedErrorsInValidCode: [
               CompileTimeErrorCode.CONST_NOT_INITIALIZED
             ],
@@ -145,7 +145,7 @@
               StaticWarningCode.FINAL_NOT_INITIALIZED
             ],
             "final a;",
-            failing: ['functionNonVoid', 'getter', 'setter'],
+            failing: ['functionNonVoid', 'getter', 'setter', 'mixin'],
             expectedErrorsInValidCode: [
               StaticWarningCode.FINAL_NOT_INITIALIZED
             ],
@@ -193,7 +193,7 @@
             'var a',
             [ParserErrorCode.EXPECTED_TOKEN],
             "var a;",
-            failing: ['functionNonVoid', 'getter', 'setter'],
+            failing: ['functionNonVoid', 'getter', 'mixin', 'setter'],
           ),
           new TestDescriptor(
             'varNameEquals',
@@ -209,7 +209,9 @@
               'functionVoid',
               'functionNonVoid',
               'const',
+              'enum',
               'getter',
+              'mixin',
               'setter'
             ],
           ),
diff --git a/pkg/analyzer/test/src/fasta/recovery/partial_code/typedef_test.dart b/pkg/analyzer/test/src/fasta/recovery/partial_code/typedef_test.dart
index 95f261e..9466494 100644
--- a/pkg/analyzer/test/src/fasta/recovery/partial_code/typedef_test.dart
+++ b/pkg/analyzer/test/src/fasta/recovery/partial_code/typedef_test.dart
@@ -33,7 +33,7 @@
                 ParserErrorCode.EXPECTED_TOKEN
               ],
               "typedef T();",
-              failing: ['functionNonVoid', 'getter', 'setter']),
+              failing: ['functionNonVoid', 'getter', 'mixin', 'setter']),
           new TestDescriptor(
               'keywordEquals',
               'typedef =',
@@ -56,7 +56,7 @@
               expectedErrorsInValidCode: [
                 ParserErrorCode.INVALID_GENERIC_FUNCTION_TYPE
               ],
-              failing: ['functionVoid', 'functionNonVoid', 'getter']),
+              failing: ['functionVoid', 'functionNonVoid', 'getter', 'mixin']),
         ],
         PartialCodeTest.declarationSuffixes);
   }
diff --git a/pkg/analyzer/test/src/hint/sdk_constraint_verifier.dart b/pkg/analyzer/test/src/hint/sdk_constraint_verifier.dart
index ee9f466..ad910f0 100644
--- a/pkg/analyzer/test/src/hint/sdk_constraint_verifier.dart
+++ b/pkg/analyzer/test/src/hint/sdk_constraint_verifier.dart
@@ -3,7 +3,8 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analyzer/error/error.dart';
-import 'package:analyzer/file_system/file_system.dart';
+import 'package:analyzer/src/generated/engine.dart' show AnalysisOptionsImpl;
+import 'package:pub_semver/pub_semver.dart';
 
 import '../../generated/resolver_test_case.dart';
 import '../../generated/test_support.dart';
@@ -15,10 +16,10 @@
 
   verifyVersion(String version, String source,
       {List<ErrorCode> errorCodes}) async {
-    newFile('/pubspec.yaml', content: '''
-environment:
-  sdk: ^$version
-''');
+    driver.configure(
+        analysisOptions: AnalysisOptionsImpl()
+          ..sdkVersionConstraint = VersionConstraint.parse(version));
+
     TestAnalysisResult result = await computeTestAnalysisResult(source);
     GatheringErrorListener listener = new GatheringErrorListener();
     listener.addAll(result.errors);
@@ -28,11 +29,4 @@
       listener.assertErrorsWithCodes(errorCodes);
     }
   }
-
-  File newFile(String path, {String content = ''}) {
-    // Copied from ResourceProviderMixin because ResolverTestCase does not apply
-    // that mixin on this branch.
-    String convertedPath = resourceProvider.convertPath(path);
-    return resourceProvider.newFile(convertedPath, content);
-  }
 }
diff --git a/pkg/analyzer/test/src/hint/sdk_version_async_exported_from_core_test.dart b/pkg/analyzer/test/src/hint/sdk_version_async_exported_from_core_test.dart
index 38bf64b..a9f42b6 100644
--- a/pkg/analyzer/test/src/hint/sdk_version_async_exported_from_core_test.dart
+++ b/pkg/analyzer/test/src/hint/sdk_version_async_exported_from_core_test.dart
@@ -69,7 +69,7 @@
 
   test_lessThan_explicitImportOfCore() async {
     await verifyVersion('2.0.0', '''
-import 'dart:core';
+import 'dart:core' show Future, int;
 
 Future<int> zero() async => 0;
 ''', errorCodes: [HintCode.SDK_VERSION_ASYNC_EXPORTED_FROM_CORE]);
@@ -102,4 +102,28 @@
 Future<int> zero() async => 0;
 ''', errorCodes: [HintCode.SDK_VERSION_ASYNC_EXPORTED_FROM_CORE]);
   }
+
+  test_lessThan_onlyReferencedInExport_hide() async {
+    await verifyVersion('2.0.0', '''
+export 'dart:async' hide Future;
+''');
+  }
+
+  test_lessThan_onlyReferencedInExport_show() async {
+    await verifyVersion('2.0.0', '''
+export 'dart:async' show Future;
+''');
+  }
+
+  test_lessThan_onlyReferencedInImport_hide() async {
+    await verifyVersion('2.0.0', '''
+import 'dart:core' hide Future;
+''');
+  }
+
+  test_lessThan_onlyReferencedInImport_show() async {
+    await verifyVersion('2.0.0', '''
+import 'dart:core' show Future;
+''');
+  }
 }
diff --git a/pkg/analyzer/test/src/lint/linter/linter_context_impl_test.dart b/pkg/analyzer/test/src/lint/linter/linter_context_impl_test.dart
new file mode 100644
index 0000000..49e4be9
--- /dev/null
+++ b/pkg/analyzer/test/src/lint/linter/linter_context_impl_test.dart
@@ -0,0 +1,121 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+
+import 'package:analyzer/dart/analysis/results.dart';
+import 'package:analyzer/src/dart/ast/ast.dart';
+import 'package:analyzer/src/dart/ast/utilities.dart';
+import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/lint/linter.dart';
+import 'package:test/test.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import '../../../generated/resolver_test_case.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(LinterContextImplTest);
+  });
+}
+
+@reflectiveTest
+class LinterContextImplTest extends ResolverTestCase {
+  String testSource;
+  CompilationUnitImpl testUnit;
+  LinterContextImpl context;
+
+  bool get enableNewAnalysisDriver => true;
+
+  void assertCanBeConst(String snippet, bool expectedResult) {
+    int index = testSource.indexOf(snippet);
+    expect(index >= 0, isTrue);
+    NodeLocator visitor = new NodeLocator(index);
+    AstNodeImpl node = visitor.searchWithin(testUnit);
+    node = node.thisOrAncestorOfType<InstanceCreationExpressionImpl>();
+    expect(node, isNotNull);
+    expect(context.canBeConst(node as InstanceCreationExpressionImpl),
+        expectedResult ? isTrue : isFalse);
+  }
+
+  Future<void> resolve(String sourceText) async {
+    testSource = sourceText;
+    Source source = addNamedSource('/test.dart', sourceText);
+    ResolvedUnitResult analysisResult = await driver.getResult(source.fullName);
+    testUnit = analysisResult.unit;
+    LinterContextUnit contextUnit = new LinterContextUnit(sourceText, testUnit);
+    context = new LinterContextImpl(
+        [contextUnit],
+        contextUnit,
+        analysisResult.session.declaredVariables,
+        analysisResult.typeProvider,
+        analysisResult.typeSystem);
+  }
+
+  void test_canBeConst_false_argument_invocation() async {
+    await resolve('''
+class A {}
+class B {
+  const B(A a);
+}
+A f() => A();
+B g() => B(f());
+''');
+    assertCanBeConst("B(f", false);
+  }
+
+  void test_canBeConst_false_argument_invocationInList() async {
+    await resolve('''
+class A {}
+class B {
+  const B(a);
+}
+A f() => A();
+B g() => B([f()]);
+''');
+    assertCanBeConst("B([", false);
+  }
+
+  void test_canBeConst_false_argument_nonConstConstructor() async {
+    await resolve('''
+class A {}
+class B {
+  const B(A a);
+}
+B f() => B(A());
+''');
+    assertCanBeConst("B(A(", false);
+  }
+
+  void test_canBeConst_false_nonConstConstructor() async {
+    await resolve('''
+class A {}
+A f() => A();
+''');
+    assertCanBeConst("A(", false);
+  }
+
+  void test_canBeConst_true_constConstructorArg() async {
+    await resolve('''
+class A {
+  const A();
+}
+class B {
+  const B(A a);
+}
+B f() => B(A());
+''');
+    assertCanBeConst("B(A(", true);
+  }
+
+  void test_canBeConst_true_constListArg() async {
+    await resolve('''
+class A {
+  const A(List<int> l);
+}
+A f() => A([1, 2, 3]);
+''');
+    assertCanBeConst("A([", true);
+  }
+}
diff --git a/pkg/analyzer/test/src/lint/linter/test_all.dart b/pkg/analyzer/test/src/lint/linter/test_all.dart
new file mode 100644
index 0000000..101588b
--- /dev/null
+++ b/pkg/analyzer/test/src/lint/linter/test_all.dart
@@ -0,0 +1,13 @@
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'linter_context_impl_test.dart' as linter_context_impl;
+
+main() {
+  defineReflectiveSuite(() {
+    linter_context_impl.main();
+  }, name: 'linter');
+}
diff --git a/pkg/analyzer/test/src/lint/test_all.dart b/pkg/analyzer/test/src/lint/test_all.dart
index 60555a3..47596f2 100644
--- a/pkg/analyzer/test/src/lint/test_all.dart
+++ b/pkg/analyzer/test/src/lint/test_all.dart
@@ -1,20 +1,21 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import 'config_test.dart' as config_test;
-import 'io_test.dart' as io_test;
-import 'project_test.dart' as project_test;
-import 'pub_test.dart' as pub_test;
+import 'config_test.dart' as config;
+import 'io_test.dart' as io;
+import 'linter/test_all.dart' as linter;
+import 'project_test.dart' as project;
+import 'pub_test.dart' as pub;
 
-/// Utility for manually running all tests.
 main() {
   defineReflectiveSuite(() {
-    config_test.main();
-    io_test.main();
-    project_test.main();
-    pub_test.main();
+    config.main();
+    io.main();
+    linter.main();
+    project.main();
+    pub.main();
   }, name: 'lint');
 }
diff --git a/pkg/analyzer/test/src/options/options_rule_validator_test.dart b/pkg/analyzer/test/src/options/options_rule_validator_test.dart
new file mode 100644
index 0000000..fad56f3
--- /dev/null
+++ b/pkg/analyzer/test/src/options/options_rule_validator_test.dart
@@ -0,0 +1,76 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:analyzer/error/error.dart';
+import 'package:analyzer/error/listener.dart';
+import 'package:analyzer/src/lint/linter.dart';
+import 'package:analyzer/src/lint/options_rule_validator.dart';
+import 'package:analyzer/src/string_source.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+import 'package:yaml/yaml.dart';
+
+import '../../generated/test_support.dart';
+
+main() {
+  defineReflectiveSuite(() {
+    defineReflectiveTests(OptionsRuleValidatorTest);
+  });
+}
+
+class DeprecatedLint extends LintRule {
+  DeprecatedLint()
+      : super(
+            name: 'deprecated_lint',
+            group: Group.style,
+            maturity: Maturity.deprecated);
+}
+
+class StableLint extends LintRule {
+  StableLint()
+      : super(
+            name: 'stable_lint', group: Group.style, maturity: Maturity.stable);
+}
+
+@reflectiveTest
+class OptionsRuleValidatorTest extends Object with ResourceProviderMixin {
+  LinterRuleOptionsValidator validator = new LinterRuleOptionsValidator(
+      provider: () => [new DeprecatedLint(), new StableLint()]);
+
+/**
+ * Assert that when the validator is used on the given [content] the
+ * [expectedErrorCodes] are produced.
+ */
+  void assertErrors(String content, List<ErrorCode> expectedErrorCodes) {
+    GatheringErrorListener listener = new GatheringErrorListener();
+    ErrorReporter reporter = new ErrorReporter(
+        listener, new StringSource(content, 'analysis_options.yaml'));
+    validator.validate(reporter, loadYamlNode(content));
+    listener.assertErrorsWithCodes(expectedErrorCodes);
+  }
+
+  test_deprecated_rule() {
+    assertErrors('''
+linter:
+  rules:
+    - deprecated_lint
+      ''', [DEPRECATED_LINT_HINT]);
+  }
+
+  test_stable_rule() {
+    assertErrors('''
+linter:
+  rules:
+    - stable_lint
+      ''', []);
+  }
+
+  test_undefined_rule() {
+    assertErrors('''
+linter:
+  rules:
+    - this_rule_does_not_exist
+      ''', [UNDEFINED_LINT_WARNING]);
+  }
+}
diff --git a/pkg/analyzer/test/src/options/test_all.dart b/pkg/analyzer/test/src/options/test_all.dart
new file mode 100644
index 0000000..e38e167
--- /dev/null
+++ b/pkg/analyzer/test/src/options/test_all.dart
@@ -0,0 +1,13 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'options_rule_validator_test.dart' as options_rule_validator;
+
+main() {
+  defineReflectiveSuite(() {
+    options_rule_validator.main();
+  }, name: 'options');
+}
diff --git a/pkg/analyzer/test/src/pubspec/pubspec_validator_test.dart b/pkg/analyzer/test/src/pubspec/pubspec_validator_test.dart
index f841d78..ef1cc99b 100644
--- a/pkg/analyzer/test/src/pubspec/pubspec_validator_test.dart
+++ b/pkg/analyzer/test/src/pubspec/pubspec_validator_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -20,7 +20,7 @@
 }
 
 @reflectiveTest
-class PubspecValidatorTest extends Object with ResourceProviderMixin {
+class PubspecValidatorTest with ResourceProviderMixin {
   PubspecValidator validator;
 
   /**
diff --git a/pkg/analyzer/test/src/source/source_resource_test.dart b/pkg/analyzer/test/src/source/source_resource_test.dart
index abf46f6..863117b 100644
--- a/pkg/analyzer/test/src/source/source_resource_test.dart
+++ b/pkg/analyzer/test/src/source/source_resource_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -10,12 +10,11 @@
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/utilities_dart.dart';
 import 'package:analyzer/src/source/source_resource.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
-import '../context/mock_sdk.dart';
-
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(FileSourceTest);
@@ -23,7 +22,7 @@
 }
 
 @reflectiveTest
-class FileSourceTest extends Object with ResourceProviderMixin {
+class FileSourceTest with ResourceProviderMixin {
   void test_equals_false_differentFiles() {
     File file1 = getFile("/does/not/exist1.dart");
     File file2 = getFile("/does/not/exist2.dart");
diff --git a/pkg/analyzer/test/src/summary/expr_builder_test.dart b/pkg/analyzer/test/src/summary/expr_builder_test.dart
index c17d7f8..c7d69df 100644
--- a/pkg/analyzer/test/src/summary/expr_builder_test.dart
+++ b/pkg/analyzer/test/src/summary/expr_builder_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -27,7 +27,7 @@
 /// Mixin containing test cases exercising the [ExprBuilder].  Intended to be
 /// applied to a class implementing [ResynthesizeTestStrategy], along with the
 /// mixin [ExprBuilderTestHelpers].
-abstract class ExprBuilderTestCases implements ExprBuilderTestHelpers {
+mixin ExprBuilderTestCases implements ExprBuilderTestHelpers {
   void test_add() {
     checkSimpleExpression('0 + 1');
   }
@@ -360,7 +360,7 @@
 
   @failingTest
   void test_pushLocalFunctionReference_nested() {
-    prepareAnalysisContext(new AnalysisOptionsImpl()..previewDart2 = false);
+    prepareAnalysisContext(new AnalysisOptionsImpl());
     var expr =
         checkSimpleExpression('(x) => (y) => x + y') as FunctionExpression;
     var outerFunctionElement = expr.declaredElement;
@@ -383,7 +383,7 @@
 
   @failingTest
   void test_pushLocalFunctionReference_paramReference() {
-    prepareAnalysisContext(new AnalysisOptionsImpl()..previewDart2 = false);
+    prepareAnalysisContext(new AnalysisOptionsImpl());
     var expr = checkSimpleExpression('(x, y) => x + y') as FunctionExpression;
     var localFunctionElement = expr.declaredElement;
     var xElement = localFunctionElement.parameters[0];
@@ -478,9 +478,9 @@
   }
 }
 
-/// Mixin containing helper methods for testing the [ExprBuilder].  Intended to
+/// Mixin containing helper methods for testing the [ExprBuilder]. Intended to
 /// be applied to a class implementing [ResynthesizeTestStrategy].
-abstract class ExprBuilderTestHelpers implements ResynthesizeTestStrategy {
+mixin ExprBuilderTestHelpers implements ResynthesizeTestStrategy {
   Expression buildConstructorInitializer(String sourceText,
       {String className: 'C',
       String initializerName: 'x',
diff --git a/pkg/analyzer/test/src/summary/linker_test.dart b/pkg/analyzer/test/src/summary/linker_test.dart
index 4a6136f..96d7b4d 100644
--- a/pkg/analyzer/test/src/summary/linker_test.dart
+++ b/pkg/analyzer/test/src/summary/linker_test.dart
@@ -26,7 +26,7 @@
 /// These test cases may be mixed into any class derived from
 /// [SummaryLinkerTestStrategy], allowing the linker to be unit-tested in a
 /// variety of ways.
-abstract class LinkerUnitTestCases implements SummaryLinkerTestStrategy {
+mixin LinkerUnitTestCases implements SummaryLinkerTestStrategy {
   Matcher get isUndefined => const TypeMatcher<UndefinedElementForLink>();
 
   LibraryElementForLink getLibrary(String uri) {
diff --git a/pkg/analyzer/test/src/summary/package_bundle_reader_test.dart b/pkg/analyzer/test/src/summary/package_bundle_reader_test.dart
index 0709a95..1061dba 100644
--- a/pkg/analyzer/test/src/summary/package_bundle_reader_test.dart
+++ b/pkg/analyzer/test/src/summary/package_bundle_reader_test.dart
@@ -368,7 +368,7 @@
 
   _TestResynthesizerResultProvider(
       InternalAnalysisContext context, SummaryDataStore dataStore)
-      : super(context, dataStore);
+      : super(context, null, dataStore);
 
   @override
   bool hasResultsForSource(Source source) {
diff --git a/pkg/analyzer/test/src/summary/resynthesize_common.dart b/pkg/analyzer/test/src/summary/resynthesize_common.dart
index adbbdba..4995afb 100644
--- a/pkg/analyzer/test/src/summary/resynthesize_common.dart
+++ b/pkg/analyzer/test/src/summary/resynthesize_common.dart
@@ -25,12 +25,12 @@
 import 'package:analyzer/src/generated/testing/ast_test_factory.dart';
 import 'package:analyzer/src/summary/idl.dart';
 import 'package:analyzer/src/summary/resynthesize.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../../generated/test_support.dart';
 import '../abstract_single_unit.dart';
-import '../context/abstract_context.dart';
 import 'element_text.dart';
 import 'test_strategies.dart';
 
@@ -100,7 +100,7 @@
     }
   }
 
-  DartSdk createDartSdk() => AbstractContextTest.SHARED_MOCK_SDK;
+  DartSdk createDartSdk() => new MockSdk(resourceProvider: resourceProvider);
 
   /**
    * Create the analysis options that should be used for this test.
@@ -117,7 +117,7 @@
 /// Mixin containing test cases exercising summary resynthesis.  Intended to be
 /// applied to a class implementing [ResynthesizeTestStrategy], along with the
 /// mixin [ResynthesizeTestHelpers].
-abstract class ResynthesizeTestCases implements ResynthesizeTestHelpers {
+mixin ResynthesizeTestCases implements ResynthesizeTestHelpers {
   test_class_abstract() async {
     var library = await checkLibrary('abstract class C {}');
     checkElementText(library, r'''
@@ -2152,7 +2152,9 @@
     checkElementText(library, r'''
 class C {
 }
-const dynamic V = #invalidConst;
+const dynamic V = const
+        C/*location: test.dart;C*/.
+        named/*location: null*/();
 ''');
   }
 
@@ -2162,7 +2164,9 @@
 const V = const C.named();
 ''', allowErrors: true);
     checkElementText(library, r'''
-const dynamic V = #invalidConst;
+const dynamic V = const
+        C/*location: null*/.
+        named/*location: null*/();
 ''');
   }
 
@@ -2178,7 +2182,10 @@
 ''', allowErrors: true);
     checkElementText(library, r'''
 import 'a.dart' as p;
-const dynamic V = #invalidConst;
+const dynamic V = const
+        p/*location: test.dart;p*/.
+        C/*location: a.dart;C*/.
+        named/*location: null*/();
 ''');
   }
 
@@ -2191,7 +2198,10 @@
 ''', allowErrors: true);
     checkElementText(library, r'''
 import 'a.dart' as p;
-const dynamic V = #invalidConst;
+const dynamic V = const
+        p/*location: test.dart;p*/.
+        C/*location: null*/.
+        named/*location: null*/();
 ''');
   }
 
@@ -2201,7 +2211,10 @@
 const V = const p.C.named();
 ''', allowErrors: true);
     checkElementText(library, r'''
-const dynamic V = #invalidConst;
+const dynamic V = const
+        p/*location: null*/.
+        C/*location: null*/.
+        named/*location: null*/();
 ''');
   }
 
@@ -2214,7 +2227,9 @@
     checkElementText(library, r'''
 class C<T> {
 }
-const dynamic V = #invalidConst;
+const dynamic V = const
+        C/*location: test.dart;C*/.
+        named/*location: null*/();
 ''');
   }
 
@@ -2274,7 +2289,8 @@
 const V = const C();
 ''', allowErrors: true);
     checkElementText(library, r'''
-const dynamic V = #invalidConst;
+const dynamic V = const
+        C/*location: null*/();
 ''');
   }
 
@@ -2287,7 +2303,9 @@
 ''', allowErrors: true);
     checkElementText(library, r'''
 import 'a.dart' as p;
-const dynamic V = #invalidConst;
+const dynamic V = const
+        p/*location: test.dart;p*/.
+        C/*location: null*/();
 ''');
   }
 
@@ -2297,7 +2315,9 @@
 const V = const p.C();
 ''', allowErrors: true);
     checkElementText(library, r'''
-const dynamic V = #invalidConst;
+const dynamic V = const
+        p/*location: null*/.
+        C/*location: null*/();
 ''');
   }
 
@@ -2863,7 +2883,8 @@
 const V = foo;
 ''', allowErrors: true);
     checkElementText(library, r'''
-const dynamic V = #invalidConst;
+const dynamic V =
+        foo/*location: null*/;
 ''');
   }
 
@@ -2876,7 +2897,9 @@
     checkElementText(library, r'''
 class C {
 }
-const dynamic V = #invalidConst;
+const dynamic V =
+        C/*location: test.dart;C*/.
+        foo/*location: null*/;
 ''');
   }
 
@@ -2891,7 +2914,10 @@
 ''', allowErrors: true);
     checkElementText(library, r'''
 import 'foo.dart' as p;
-const dynamic V = #invalidConst;
+const dynamic V =
+        p/*location: test.dart;p*/.
+        C/*location: foo.dart;C*/.
+        foo/*location: null*/;
 ''');
   }
 
@@ -3029,7 +3055,7 @@
 const vSuper = super;
 ''');
     checkElementText(library, r'''
-const dynamic vSuper = #invalidConst;
+const dynamic vSuper = super;
 ''');
   }
 
@@ -3039,7 +3065,7 @@
 const vThis = this;
 ''');
     checkElementText(library, r'''
-const dynamic vThis = #invalidConst;
+const dynamic vThis = this;
 ''');
   }
 
@@ -5145,7 +5171,8 @@
 import '';
 ''');
     checkElementText(library, r'''
-@#invalidConst
+@
+        foo/*location: null*/
 import '<unresolved>';
 ''');
   }
@@ -5894,7 +5921,10 @@
 ''');
     checkElementText(library, r'''
 import 'a.dart' as a;
-@#invalidConst
+@
+        a/*location: test.dart;a*/.
+        C/*location: a.dart;C*/.
+        named/*location: a.dart;C;named*/
 class D {
 }
 ''');
@@ -5914,7 +5944,9 @@
 ''');
     checkElementText(library, r'''
 import 'a.dart';
-@#invalidConst
+@
+        C/*location: a.dart;C*/.
+        named/*location: a.dart;C;named*/
 class D {
 }
 ''');
@@ -5948,7 +5980,8 @@
     checkElementText(library, r'''
 import 'a.dart';
 import 'b.dart';
-dynamic foo([dynamic p = #invalidConst]) {}
+dynamic foo([dynamic p =
+        V/*location: null*/]) {}
 ''');
   }
 
@@ -5967,7 +6000,8 @@
 ''');
     checkElementText(library, r'''
 import 'c.dart';
-dynamic foo([dynamic p = #invalidConst]) {}
+dynamic foo([dynamic p =
+        V/*location: null*/]) {}
 ''');
   }
 
@@ -5981,7 +6015,8 @@
 ''');
     checkElementText(library, r'''
 dynamic V;
-dynamic foo([dynamic p = #invalidConst]) {}
+dynamic foo([dynamic p =
+        V/*location: null*/]) {}
 dynamic V() {}
 ''');
   }
@@ -6662,7 +6697,8 @@
     shouldCompareLibraryElements = false;
     var library = await checkLibrary('f(_) {} @f(42) class C {}');
     checkElementText(library, r'''
-@#invalidConst
+@
+        __unresolved__/*location: null*/
 class C {
 }
 dynamic f(dynamic _) {}
@@ -8323,7 +8359,8 @@
 class A {
   const A(dynamic _);
 }
-@#invalidConst
+@
+        A/*location: test.dart;A*/(this)
 class C {
 }
 ''');
@@ -8334,7 +8371,9 @@
     var library =
         await checkLibrary('@foo.bar() class C {}', allowErrors: true);
     checkElementText(library, r'''
-@#invalidConst
+@
+        foo/*location: null*/.
+        bar/*location: null*/()
 class C {
 }
 ''');
@@ -8345,7 +8384,9 @@
     var library =
         await checkLibrary('@String.foo() class C {}', allowErrors: true);
     checkElementText(library, r'''
-@#invalidConst
+@
+        String/*location: dart:core;String*/.
+        foo/*location: null*/()
 class C {
 }
 ''');
@@ -8355,7 +8396,9 @@
     shouldCompareLibraryElements = false;
     var library = await checkLibrary('@foo.bar class C {}', allowErrors: true);
     checkElementText(library, r'''
-@#invalidConst
+@
+        foo/*location: null*/.
+        bar/*location: null*/
 class C {
 }
 ''');
@@ -8368,7 +8411,9 @@
         allowErrors: true);
     checkElementText(library, r'''
 import 'dart:async' as foo;
-@#invalidConst
+@
+        foo/*location: test.dart;foo*/.
+        bar/*location: null*/
 class C {
 }
 ''');
@@ -8379,7 +8424,10 @@
     var library =
         await checkLibrary('@foo.bar.baz() class C {}', allowErrors: true);
     checkElementText(library, r'''
-@#invalidConst
+@
+        foo/*location: null*/.
+        bar/*location: null*/.
+        baz/*location: null*/()
 class C {
 }
 ''');
@@ -8392,7 +8440,10 @@
         allowErrors: true);
     checkElementText(library, r'''
 import 'dart:async' as foo;
-@#invalidConst
+@
+        foo/*location: test.dart;foo*/.
+        bar/*location: null*/.
+        baz/*location: null*/()
 class C {
 }
 ''');
@@ -8405,7 +8456,10 @@
         allowErrors: true);
     checkElementText(library, r'''
 import 'dart:async' as foo;
-@#invalidConst
+@
+        foo/*location: test.dart;foo*/.
+        Future/*location: dart:async;Future*/.
+        bar/*location: null*/()
 class C {
 }
 ''');
@@ -8416,7 +8470,9 @@
     var library =
         await checkLibrary('@foo.bar() class C {}', allowErrors: true);
     checkElementText(library, r'''
-@#invalidConst
+@
+        foo/*location: null*/.
+        bar/*location: null*/()
 class C {
 }
 ''');
@@ -8429,7 +8485,9 @@
         allowErrors: true);
     checkElementText(library, r'''
 import 'dart:async' as foo;
-@#invalidConst
+@
+        foo/*location: test.dart;foo*/.
+        bar/*location: null*/()
 class C {
 }
 ''');
@@ -8439,7 +8497,8 @@
     shouldCompareLibraryElements = false;
     var library = await checkLibrary('@foo class C {}', allowErrors: true);
     checkElementText(library, r'''
-@#invalidConst
+@
+        foo/*location: null*/
 class C {
 }
 ''');
@@ -8449,7 +8508,8 @@
     shouldCompareLibraryElements = false;
     var library = await checkLibrary('@foo() class C {}', allowErrors: true);
     checkElementText(library, r'''
-@#invalidConst
+@
+        foo/*location: null*/()
 class C {
 }
 ''');
@@ -8746,7 +8806,7 @@
 
 /// Mixin containing helper methods for testing summary resynthesis.  Intended
 /// to be applied to a class implementing [ResynthesizeTestStrategy].
-abstract class ResynthesizeTestHelpers implements ResynthesizeTestStrategy {
+mixin ResynthesizeTestHelpers implements ResynthesizeTestStrategy {
   /**
    * Names of variables which have initializers that are not valid constants,
    * so they are not resynthesized.
@@ -10012,7 +10072,7 @@
 
   TestSummaryResynthesizer(AnalysisContext context, this.unlinkedSummaries,
       this.linkedSummaries, this.allowMissingFiles)
-      : super(context, context.sourceFactory, true) {
+      : super(context, null, context.sourceFactory, true) {
     // Clear after resynthesizing TypeProvider in super().
     unlinkedSummariesRequested.clear();
     linkedSummariesRequested.clear();
diff --git a/pkg/analyzer/test/src/summary/summary_common.dart b/pkg/analyzer/test/src/summary/summary_common.dart
index 3f1e604..768bc8e 100644
--- a/pkg/analyzer/test/src/summary/summary_common.dart
+++ b/pkg/analyzer/test/src/summary/summary_common.dart
@@ -1,8 +1,7 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/error/listener.dart';
 import 'package:analyzer/src/dart/scanner/reader.dart';
@@ -79,7 +78,7 @@
 /// These test cases may be mixed into any class derived from
 /// [SummaryBlackBoxTestStrategy], allowing summary generation to be unit-tested
 /// in a variety of ways.
-abstract class SummaryTestCases implements SummaryBlackBoxTestStrategy {
+mixin SummaryTestCases implements SummaryBlackBoxTestStrategy {
   /**
    * Get access to the linked defining compilation unit.
    */
@@ -796,8 +795,11 @@
    * with the given [variableName].
    */
   UnlinkedVariable serializeVariableText(String text,
-      {String variableName: 'v', bool allowErrors: false}) {
-    serializeLibraryText(text, allowErrors: allowErrors);
+      {String variableName: 'v',
+      bool allowErrors: false,
+      bool enableSetLiterals: enableSetLiteralsDefault}) {
+    serializeLibraryText(text,
+        allowErrors: allowErrors, enableSetLiterals: enableSetLiterals);
     return findVariable(variableName, failIfAbsent: true);
   }
 
@@ -2836,6 +2838,117 @@
     ]);
   }
 
+  test_constExpr_makeTypedSet() {
+    UnlinkedVariable variable = serializeVariableText(
+        'const v = const <int>{11, 22, 33};',
+        enableSetLiterals: true);
+    assertUnlinkedConst(variable.initializer.bodyExpr, operators: [
+      UnlinkedExprOperation.pushInt,
+      UnlinkedExprOperation.pushInt,
+      UnlinkedExprOperation.pushInt,
+      UnlinkedExprOperation.makeTypedSet
+    ], ints: [
+      11,
+      22,
+      33,
+      3
+    ], referenceValidators: [
+      (EntityRef r) => checkTypeRef(r, 'dart:core', 'int',
+          expectedKind: ReferenceKind.classOrEnum)
+    ]);
+  }
+
+  test_constExpr_makeTypedSet_dynamic() {
+    UnlinkedVariable variable = serializeVariableText(
+        'const v = const <dynamic>{11, 22, 33};',
+        enableSetLiterals: true);
+    assertUnlinkedConst(variable.initializer.bodyExpr, operators: [
+      UnlinkedExprOperation.pushInt,
+      UnlinkedExprOperation.pushInt,
+      UnlinkedExprOperation.pushInt,
+      UnlinkedExprOperation.makeTypedSet
+    ], ints: [
+      11,
+      22,
+      33,
+      3
+    ], referenceValidators: [
+      (EntityRef r) => checkDynamicTypeRef(r)
+    ]);
+  }
+
+  test_constExpr_makeTypedSet_functionType() {
+    UnlinkedVariable variable = serializeVariableText(
+        'final v = <void Function(int)>{};',
+        enableSetLiterals: true);
+    assertUnlinkedConst(variable.initializer.bodyExpr,
+        operators: [UnlinkedExprOperation.makeTypedSet],
+        ints: [
+          0 // Size of the list
+        ],
+        referenceValidators: [
+          (EntityRef reference) {
+            expect(reference, new TypeMatcher<EntityRef>());
+            expect(reference.entityKind, EntityRefKind.genericFunctionType);
+            expect(reference.syntheticParams, hasLength(1));
+            {
+              final param = reference.syntheticParams[0];
+              expect(param.name, ''); // no name for generic type parameters
+              checkTypeRef(param.type, 'dart:core', 'int',
+                  expectedKind: ReferenceKind.classOrEnum);
+            }
+            expect(reference.paramReference, 0);
+            expect(reference.typeParameters, hasLength(0));
+            // TODO(mfairhurst) check this references void
+            expect(reference.syntheticReturnType, isNotNull);
+          }
+        ],
+        forTypeInferenceOnly: true);
+  }
+
+  test_constExpr_makeTypedSet_functionType_withTypeParameters() {
+    UnlinkedVariable variable = serializeVariableText(
+        'final v = <void Function<T>(Function<Q>(T, Q))>{};',
+        enableSetLiterals: true);
+    assertUnlinkedConst(variable.initializer.bodyExpr,
+        operators: [UnlinkedExprOperation.makeTypedSet],
+        ints: [
+          0 // Size of the list
+        ],
+        referenceValidators: [
+          (EntityRef reference) {
+            expect(reference, new TypeMatcher<EntityRef>());
+            expect(reference.entityKind, EntityRefKind.genericFunctionType);
+            expect(reference.syntheticParams, hasLength(1));
+            {
+              final param = reference.syntheticParams[0];
+              expect(param.type, new TypeMatcher<EntityRef>());
+              expect(param.type.entityKind, EntityRefKind.genericFunctionType);
+              expect(param.type.syntheticParams, hasLength(2));
+              {
+                final subparam = param.type.syntheticParams[0];
+                expect(
+                    subparam.name, ''); // no name for generic type parameters
+                expect(subparam.type, new TypeMatcher<EntityRef>());
+                expect(subparam.type.paramReference, 2);
+              }
+              {
+                final subparam = param.type.syntheticParams[1];
+                expect(
+                    subparam.name, ''); // no name for generic type parameters
+                expect(subparam.type, new TypeMatcher<EntityRef>());
+                expect(subparam.type.paramReference, 1);
+              }
+            }
+            expect(reference.paramReference, 0);
+            expect(reference.typeParameters, hasLength(1));
+            // TODO(mfairhurst) check this references void
+            expect(reference.syntheticReturnType, isNotNull);
+          }
+        ],
+        forTypeInferenceOnly: true);
+  }
+
   test_constExpr_makeUntypedList() {
     UnlinkedVariable variable =
         serializeVariableText('const v = const [11, 22, 33];');
@@ -2875,6 +2988,23 @@
     ]);
   }
 
+  test_constExpr_makeUntypedSet() {
+    UnlinkedVariable variable = serializeVariableText(
+        'const v = const {11, 22, 33};',
+        enableSetLiterals: true);
+    assertUnlinkedConst(variable.initializer.bodyExpr, operators: [
+      UnlinkedExprOperation.pushInt,
+      UnlinkedExprOperation.pushInt,
+      UnlinkedExprOperation.pushInt,
+      UnlinkedExprOperation.makeUntypedSet
+    ], ints: [
+      11,
+      22,
+      33,
+      3
+    ]);
+  }
+
   test_constExpr_parenthesized() {
     UnlinkedVariable variable = serializeVariableText('const v = (1 + 2) * 3;');
     assertUnlinkedConst(variable.initializer.bodyExpr, operators: [
@@ -7127,6 +7257,20 @@
         forTypeInferenceOnly: true);
   }
 
+  test_expr_makeTypedSet() {
+    UnlinkedVariable variable = serializeVariableText(
+        'var v = <int>{11, 22, 33};',
+        enableSetLiterals: true);
+    assertUnlinkedConst(variable.initializer.bodyExpr,
+        operators: [UnlinkedExprOperation.makeTypedSet],
+        ints: [0],
+        referenceValidators: [
+          (EntityRef r) => checkTypeRef(r, 'dart:core', 'int',
+              expectedKind: ReferenceKind.classOrEnum)
+        ],
+        forTypeInferenceOnly: true);
+  }
+
   test_expr_makeUntypedList() {
     UnlinkedVariable variable = serializeVariableText('var v = [11, 22, 33];');
     assertUnlinkedConst(variable.initializer.bodyExpr,
@@ -7158,6 +7302,20 @@
         forTypeInferenceOnly: true);
   }
 
+  test_expr_makeUntypedSet() {
+    UnlinkedVariable variable =
+        serializeVariableText('var v = {11, 22, 33};', enableSetLiterals: true);
+    assertUnlinkedConst(variable.initializer.bodyExpr,
+        operators: [
+          UnlinkedExprOperation.pushInt,
+          UnlinkedExprOperation.pushInt,
+          UnlinkedExprOperation.pushInt,
+          UnlinkedExprOperation.makeUntypedSet
+        ],
+        ints: [11, 22, 33, 3],
+        forTypeInferenceOnly: true);
+  }
+
   test_expr_super() {
     UnlinkedVariable variable = serializeVariableText('''
 final v = super;
@@ -9640,6 +9798,16 @@
     checkDynamicTypeRef(serializeTypeText('dynamic'));
   }
 
+  test_type_inference_based_on_type_parameter() {
+    var class_ = serializeClassText('''
+class C<T> {
+  var field = T;
+}
+''');
+    var field = class_.fields[0];
+    checkLinkedTypeSlot(field.inferredTypeSlot, 'dart:core', 'Type');
+  }
+
   test_type_invalid_typeParameter_asPrefix() {
     UnlinkedClass c = serializeClassText('''
 class C<T> {
diff --git a/pkg/analyzer/test/src/summary/test_strategies.dart b/pkg/analyzer/test/src/summary/test_strategies.dart
index 03c020d..b7b7958 100644
--- a/pkg/analyzer/test/src/summary/test_strategies.dart
+++ b/pkg/analyzer/test/src/summary/test_strategies.dart
@@ -23,10 +23,10 @@
 import 'package:analyzer/src/summary/summarize_elements.dart';
 import 'package:analyzer/src/task/api/dart.dart';
 import 'package:analyzer/src/task/api/general.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
 import 'package:path/path.dart' show posix;
 import 'package:test/test.dart';
 
-import '../context/mock_sdk.dart';
 import 'resynthesize_common.dart';
 
 /// Convert the given Posix style file [path] to the corresponding absolute URI.
@@ -35,13 +35,15 @@
   return posix.toUri(absolutePath).toString();
 }
 
-CompilationUnit _parseText(String text) {
+CompilationUnit _parseText(String text,
+    {bool enableSetLiterals: enableSetLiteralsDefault}) {
   CharSequenceReader reader = new CharSequenceReader(text);
   Scanner scanner =
       new Scanner(null, reader, AnalysisErrorListener.NULL_LISTENER);
   Token token = scanner.tokenize();
-  Parser parser = new Parser(
-      NonExistingSource.unknown, AnalysisErrorListener.NULL_LISTENER);
+  Parser parser =
+      new Parser(NonExistingSource.unknown, AnalysisErrorListener.NULL_LISTENER)
+        ..enableSetLiterals = enableSetLiterals;
   CompilationUnit unit = parser.parseCompilationUnit(token);
   unit.lineInfo = new LineInfo(scanner.lineStarts);
   return unit;
@@ -257,7 +259,9 @@
     try {
       Map<String, UnlinkedUnit> uriToUnlinkedUnit = <String, UnlinkedUnit>{};
       Map<String, LinkedLibrary> uriToLinkedLibrary = <String, LinkedLibrary>{};
-      PackageBundle bundle = new MockSdk().getLinkedBundle();
+      var resourceProvider = new MemoryResourceProvider();
+      PackageBundle bundle =
+          new MockSdk(resourceProvider: resourceProvider).getLinkedBundle();
       for (int i = 0; i < bundle.unlinkedUnitUris.length; i++) {
         String uri = bundle.unlinkedUnitUris[i];
         uriToUnlinkedUnit[uri] = bundle.unlinkedUnits[i];
@@ -327,7 +331,9 @@
 
   /// Serialize the given library [text], then deserialize it and store its
   /// summary in [lib].
-  void serializeLibraryText(String text, {bool allowErrors: false});
+  void serializeLibraryText(String text,
+      {bool allowErrors: false,
+      bool enableSetLiterals: enableSetLiteralsDefault});
 }
 
 /// Implementation of [SummaryBlackBoxTestStrategy] that drives summary
@@ -339,8 +345,11 @@
   bool get skipFullyLinkedData => true;
 
   @override
-  void serializeLibraryText(String text, {bool allowErrors: false}) {
-    super.serializeLibraryText(text, allowErrors: allowErrors);
+  void serializeLibraryText(String text,
+      {bool allowErrors: false,
+      bool enableSetLiterals: enableSetLiteralsDefault}) {
+    super.serializeLibraryText(text,
+        allowErrors: allowErrors, enableSetLiterals: enableSetLiterals);
 
     UnlinkedUnit getPart(String absoluteUri) {
       return _linkerInputs.getUnit(absoluteUri);
@@ -531,15 +540,20 @@
     return assembler.assemble();
   }
 
-  UnlinkedUnitBuilder createUnlinkedSummary(Uri uri, String text) =>
-      serializeAstUnlinked(_parseText(text));
+  UnlinkedUnitBuilder createUnlinkedSummary(Uri uri, String text,
+          {bool enableSetLiterals: enableSetLiteralsDefault}) =>
+      serializeAstUnlinked(
+          _parseText(text, enableSetLiterals: enableSetLiterals));
 
   _LinkerInputs _createLinkerInputs(String text,
-      {String path: '/test.dart', String uri}) {
+      {String path: '/test.dart',
+      String uri,
+      bool enableSetLiterals: enableSetLiteralsDefault}) {
     uri ??= absUri(path);
     Uri testDartUri = Uri.parse(uri);
-    UnlinkedUnitBuilder unlinkedDefiningUnit =
-        createUnlinkedSummary(testDartUri, text);
+    UnlinkedUnitBuilder unlinkedDefiningUnit = createUnlinkedSummary(
+        testDartUri, text,
+        enableSetLiterals: enableSetLiterals);
     _filesToLink.uriToUnit[testDartUri.toString()] = unlinkedDefiningUnit;
     _LinkerInputs linkerInputs = new _LinkerInputs(
         _allowMissingFiles,
@@ -580,9 +594,12 @@
   bool get containsNonConstExprs => true;
 
   @override
-  void serializeLibraryText(String text, {bool allowErrors: false}) {
+  void serializeLibraryText(String text,
+      {bool allowErrors: false,
+      bool enableSetLiterals: enableSetLiteralsDefault}) {
     Map<String, UnlinkedUnitBuilder> uriToUnit = this._filesToLink.uriToUnit;
-    _linkerInputs = _createLinkerInputs(text);
+    _linkerInputs =
+        _createLinkerInputs(text, enableSetLiterals: enableSetLiterals);
     linked = link(
         _linkerInputs.linkedLibraries,
         _linkerInputs.getDependency,
diff --git a/pkg/analyzer/test/src/summary/top_level_inference_test.dart b/pkg/analyzer/test/src/summary/top_level_inference_test.dart
index bf6a1bc..ace76cd 100644
--- a/pkg/analyzer/test/src/summary/top_level_inference_test.dart
+++ b/pkg/analyzer/test/src/summary/top_level_inference_test.dart
@@ -4,8 +4,8 @@
 
 import 'dart:async';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/element/element.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../dart/analysis/base.dart';
@@ -366,10 +366,6 @@
 
 @reflectiveTest
 class TopLevelInferenceTest extends BaseAnalysisDriverTest {
-  void addFile(String path, String code) {
-    provider.newFile(_p(path), code);
-  }
-
   test_initializer_additive() async {
     var library = await _encodeDecodeLibrary(r'''
 var vPlusIntInt = 1 + 2;
@@ -682,11 +678,11 @@
   }
 
   test_initializer_extractProperty_inOtherLibraryCycle() async {
-    addFile('/a.dart', r'''
+    newFile('/a.dart', content: r'''
 import 'b.dart';
 var x = new C().f;
 ''');
-    addFile('/b.dart', r'''
+    newFile('/b.dart', content: r'''
 class C {
   var f = 0;
 }
@@ -2532,8 +2528,7 @@
   }
 
   test_method_OK_single_private_linkThroughOtherLibraryOfCycle() async {
-    String path = _p('/other.dart');
-    provider.newFile(path, r'''
+    newFile('/other.dart', content: r'''
 import 'test.dart';
 class B extends A2 {}
 ''');
@@ -2628,11 +2623,9 @@
   }
 
   Future<LibraryElement> _encodeDecodeLibrary(String text) async {
-    String path = _p('/test.dart');
-    provider.newFile(path, text);
+    String path = convertPath('/test.dart');
+    newFile(path, content: text);
     UnitElementResult result = await driver.getUnitElement(path);
     return result.element.library;
   }
-
-  String _p(String path) => provider.convertPath(path);
 }
diff --git a/pkg/analyzer/test/src/task/dart_test.dart b/pkg/analyzer/test/src/task/dart_test.dart
index a2a0da0..22b79c4 100644
--- a/pkg/analyzer/test/src/task/dart_test.dart
+++ b/pkg/analyzer/test/src/task/dart_test.dart
@@ -3158,9 +3158,7 @@
 
   void _performParseTask(String content) {
     if (content == null) {
-      source = resourceProvider
-          .getFile(resourceProvider.convertPath('/test.dart'))
-          .createSource();
+      source = getFile('/test.dart').createSource();
     } else {
       source = newSource('/test.dart', content);
     }
diff --git a/pkg/analyzer/test/src/task/options_test.dart b/pkg/analyzer/test/src/task/options_test.dart
index befc23b..645c950 100644
--- a/pkg/analyzer/test/src/task/options_test.dart
+++ b/pkg/analyzer/test/src/task/options_test.dart
@@ -1,14 +1,17 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:mirrors';
 
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/error/error.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/source/error_processor.dart';
 import 'package:analyzer/src/analysis_options/analysis_options_provider.dart';
+import 'package:analyzer/src/analysis_options/error/option_codes.dart';
+import 'package:analyzer/src/dart/error/hint_codes.dart';
+import 'package:analyzer/src/error/codes.dart';
 import 'package:analyzer/src/file_system/file_system.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
@@ -193,6 +196,7 @@
         removeCode(StrongModeCode.INVALID_CAST_LITERAL);
         removeCode(StrongModeCode.INVALID_CAST_LITERAL_LIST);
         removeCode(StrongModeCode.INVALID_CAST_LITERAL_MAP);
+        removeCode(StrongModeCode.INVALID_CAST_LITERAL_SET);
         removeCode(StrongModeCode.INVALID_CAST_FUNCTION_EXPR);
         removeCode(StrongModeCode.INVALID_CAST_NEW_EXPR);
         removeCode(StrongModeCode.INVALID_CAST_METHOD);
@@ -486,6 +490,22 @@
       new OptionsFileValidator(new TestSource());
   final AnalysisOptionsProvider optionsProvider = new AnalysisOptionsProvider();
 
+  test_analyzer_enableExperiment_badValue() {
+    validate('''
+analyzer:
+  enable-experiment:
+    - not-an-experiment
+    ''', [AnalysisOptionsWarningCode.UNSUPPORTED_OPTION_WITHOUT_VALUES]);
+  }
+
+  test_analyzer_enableExperiment_notAList() {
+    validate('''
+analyzer:
+  enable-experiment:
+    experiment: true
+    ''', [AnalysisOptionsWarningCode.INVALID_SECTION_FORMAT]);
+  }
+
   test_analyzer_error_code_supported() {
     validate('''
 analyzer:
diff --git a/pkg/analyzer/test/src/task/strong/checker_test.dart b/pkg/analyzer/test/src/task/strong/checker_test.dart
index 5e74843..4194a0a 100644
--- a/pkg/analyzer/test/src/task/strong/checker_test.dart
+++ b/pkg/analyzer/test/src/task/strong/checker_test.dart
@@ -2134,73 +2134,49 @@
     addFile(
         'num n; int i; void main() { i = /*info:DOWN_CAST_IMPLICIT*/n;}//yy');
     await check();
+
     addFile(
         'num n; int i; void main() { i = /*error:INVALID_ASSIGNMENT*/n;}//ny');
-    await check(implicitCasts: false, declarationCasts: true);
-    addFile(
-        'num n; int i; void main() { i = /*info:DOWN_CAST_IMPLICIT*/n;}//yn');
-    await check(implicitCasts: true, declarationCasts: false);
-    addFile(
-        'num n; int i; void main() { i = /*error:INVALID_ASSIGNMENT*/n;}//nn');
-    await check(implicitCasts: false, declarationCasts: false);
+    await check(implicitCasts: false);
   }
 
   test_implicitCasts_compoundAssignment() async {
     addFile('''f(num n, int i) {
                /*info:DOWN_CAST_IMPLICIT_ASSIGN*/i += n;}//yy''');
     await check();
+
     addFile('''f(num n, int i) {
                i += /*error:INVALID_ASSIGNMENT*/n;}//ny''');
-    await check(implicitCasts: false, declarationCasts: true);
-    addFile('''f(num n, int i) {
-               /*info:DOWN_CAST_IMPLICIT_ASSIGN*/i += n;}//yn''');
-    await check(implicitCasts: true, declarationCasts: false);
-    addFile('''f(num n, int i) {
-               i += /*error:INVALID_ASSIGNMENT*/n;}//nn''');
-    await check(implicitCasts: false, declarationCasts: false);
+    await check(implicitCasts: false);
   }
 
   test_implicitCasts_constructorInitializer() async {
     addFile(
         'class A { int i; A(num n) : i = /*info:DOWN_CAST_IMPLICIT*/n;}//yy');
     await check();
+
     addFile(
         'class A { int i; A(num n) : i = /*error:FIELD_INITIALIZER_NOT_ASSIGNABLE*/n;}//ny');
-    await check(implicitCasts: false, declarationCasts: true);
-    addFile(
-        'class A { int i; A(num n) : i = /*info:DOWN_CAST_IMPLICIT*/n;}//yn');
-    await check(implicitCasts: true, declarationCasts: false);
-    addFile(
-        'class A { int i; A(num n) : i = /*error:FIELD_INITIALIZER_NOT_ASSIGNABLE*/n;}//nn');
-    await check(implicitCasts: false, declarationCasts: false);
+    await check(implicitCasts: false);
   }
 
   test_implicitCasts_defaultValue() async {
     addFile('''const num n = 0;
                f({int i = /*info:DOWN_CAST_IMPLICIT*/n}) => i;//yy''');
     await check();
+
     addFile('''const num n = 0;
                f({int i = /*error:INVALID_ASSIGNMENT*/n}) => i;//ny''');
-    await check(implicitCasts: false, declarationCasts: true);
-    addFile('''const num n = 0;
-               f({int i = /*info:DOWN_CAST_IMPLICIT*/n}) => i;//yn''');
-    await check(implicitCasts: true, declarationCasts: false);
-    addFile('''const num n = 0;
-               f({int i = /*error:INVALID_ASSIGNMENT*/n}) => i;//nn''');
-    await check(implicitCasts: false, declarationCasts: false);
+    await check(implicitCasts: false);
   }
 
   test_implicitCasts_fieldInitializer() async {
     addFile('class A { static num n; int i = /*info:ASSIGNMENT_CAST*/n;}//yy');
     await check();
-    addFile('class A { static num n; int i = /*info:ASSIGNMENT_CAST*/n;}//ny');
-    await check(implicitCasts: false, declarationCasts: true);
-    addFile(
-        'class A { static num n; int i = /*error:INVALID_ASSIGNMENT*/n;}//yn');
-    await check(implicitCasts: true, declarationCasts: false);
+
     addFile(
         'class A { static num n; int i = /*error:INVALID_ASSIGNMENT*/n;}//nn');
-    await check(implicitCasts: false, declarationCasts: false);
+    await check(implicitCasts: false);
   }
 
   test_implicitCasts_functionCall() async {
@@ -2208,18 +2184,11 @@
                f(int i) => i;
                var i = f(/*info:DOWN_CAST_IMPLICIT*/n);//yy''');
     await check();
-    addFile('''num n;
-               f(int i) => i;
-               var i = f(/*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/n);//ny''');
-    await check(implicitCasts: false, declarationCasts: true);
-    addFile('''num n;
-               f(int i) => i;
-               var i = f(/*info:DOWN_CAST_IMPLICIT*/n);//yn''');
-    await check(implicitCasts: true, declarationCasts: false);
+
     addFile('''num n;
              f(int i) => i;
              var i = f(/*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/n);//nn''');
-    await check(implicitCasts: false, declarationCasts: false);
+    await check(implicitCasts: false);
   }
 
   test_implicitCasts_genericMethods() async {
@@ -2232,12 +2201,9 @@
   test_implicitCasts_initializer() async {
     addFile('num n; int i = /*info:ASSIGNMENT_CAST*/n;//yy');
     await check();
-    addFile('num n; int i = /*info:ASSIGNMENT_CAST*/n;//ny');
-    await check(implicitCasts: false, declarationCasts: true);
-    addFile('num n; int i = /*error:INVALID_ASSIGNMENT*/n;//yn');
-    await check(implicitCasts: true, declarationCasts: false);
+
     addFile('num n; int i = /*error:INVALID_ASSIGNMENT*/n;//nn');
-    await check(implicitCasts: false, declarationCasts: false);
+    await check(implicitCasts: false);
   }
 
   test_implicitCasts_numericOps() async {
@@ -2257,29 +2223,19 @@
              int i;
              var r = i & /*info:DOWN_CAST_IMPLICIT*/n;//yy''');
     await check();
-    addFile('''num n;
-             int i;
-             var r = i & /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/n;//ny''');
-    await check(implicitCasts: false, declarationCasts: true);
-    addFile('''num n;
-             int i;
-             var r = i & /*info:DOWN_CAST_IMPLICIT*/n;//yn''');
-    await check(implicitCasts: true, declarationCasts: false);
+
     addFile('''num n;
              int i;
              var r = i & /*error:ARGUMENT_TYPE_NOT_ASSIGNABLE*/n;//nn''');
-    await check(implicitCasts: false, declarationCasts: false);
+    await check(implicitCasts: false);
   }
 
   test_implicitCasts_return() async {
     addFile('int f(num n) => /*info:DOWN_CAST_IMPLICIT*/n;//yy');
     await check();
-    addFile('int f(num n) => /*error:RETURN_OF_INVALID_TYPE*/n;//ny');
-    await check(implicitCasts: false, declarationCasts: true);
-    addFile('int f(num n) => /*info:DOWN_CAST_IMPLICIT*/n;//yn');
-    await check(implicitCasts: true, declarationCasts: false);
+
     addFile('int f(num n) => /*error:RETURN_OF_INVALID_TYPE*/n;//nn');
-    await check(implicitCasts: false, declarationCasts: false);
+    await check(implicitCasts: false);
   }
 
   test_implicitCasts_return_async() async {
diff --git a/pkg/analyzer/test/src/task/strong/inferred_type_test.dart b/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
index ccef7a7..2991634 100644
--- a/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
+++ b/pkg/analyzer/test/src/task/strong/inferred_type_test.dart
@@ -20,7 +20,7 @@
   });
 }
 
-abstract class InferredTypeMixin {
+mixin InferredTypeMixin {
   /// Extra top-level errors if needed due to being analyze multiple times.
   bool get hasExtraTaskModelPass => true;
 
@@ -39,9 +39,7 @@
    * unit.
    */
   Future<CompilationUnit> checkFile(String content,
-      {bool declarationCasts: true,
-      bool implicitCasts: true,
-      bool implicitDynamic: true});
+      {bool implicitCasts: true, bool implicitDynamic: true});
 
   /**
    * Add the file, process it (resolve, validate, etc) and return the resolved
@@ -1506,7 +1504,7 @@
 Iterable<Map<int, int>> bar() sync* {
   yield /*info:INFERRED_TYPE_LITERAL*/{};
   yield /*error:YIELD_OF_INVALID_TYPE*/new List();
-  yield* /*error:YIELD_OF_INVALID_TYPE*/{};
+  yield* {};
   yield* /*info:INFERRED_TYPE_ALLOCATION*/new List();
 }
 ''');
@@ -4484,22 +4482,8 @@
 
   @failingTest
   @override
-  test_unsafeBlockClosureInference_functionCall_explicitDynamicParam_viaExpr2() async {
-    await super
-        .test_unsafeBlockClosureInference_functionCall_explicitDynamicParam_viaExpr2();
-  }
-
-  @failingTest
-  @override
   test_unsafeBlockClosureInference_functionCall_explicitTypeParam_viaExpr1() {
     return super
         .test_unsafeBlockClosureInference_functionCall_explicitTypeParam_viaExpr1();
   }
-
-  @failingTest
-  @override
-  test_unsafeBlockClosureInference_functionCall_explicitTypeParam_viaExpr2() async {
-    await super
-        .test_unsafeBlockClosureInference_functionCall_explicitTypeParam_viaExpr2();
-  }
 }
diff --git a/pkg/analyzer/test/src/task/strong/strong_test_helper.dart b/pkg/analyzer/test/src/task/strong/strong_test_helper.dart
index d9e4081..c9c3fcf 100644
--- a/pkg/analyzer/test/src/task/strong/strong_test_helper.dart
+++ b/pkg/analyzer/test/src/task/strong/strong_test_helper.dart
@@ -25,11 +25,11 @@
 import 'package:analyzer/src/file_system/file_system.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:source_span/source_span.dart';
 import 'package:test/test.dart';
 
-import '../../context/mock_sdk.dart';
-
 SourceSpanWithContext _createSpanHelper(
     LineInfo lineInfo, int start, Source source, String content,
     {int end}) {
@@ -237,8 +237,7 @@
   fail('Checker errors do not match expected errors:\n\n$message');
 }
 
-class AbstractStrongTest {
-  MemoryResourceProvider _resourceProvider = new MemoryResourceProvider();
+class AbstractStrongTest with ResourceProviderMixin {
   bool _checkCalled = false;
 
   AnalysisContext _context = null;
@@ -266,7 +265,7 @@
   /// For a single file, you may also use [checkFile].
   void addFile(String content, {String name: '/main.dart'}) {
     name = name.replaceFirst('^package:', '/packages/');
-    _resourceProvider.newFile(_resourceProvider.convertPath(name), content);
+    newFile(name, content: content);
   }
 
   /// Run the checker on a program, staring from '/main.dart', and verifies that
@@ -277,27 +276,23 @@
   ///
   /// Returns the main resolved library. This can be used for further checks.
   Future<CompilationUnit> check(
-      {bool declarationCasts: true,
-      bool implicitCasts: true,
-      bool implicitDynamic: true}) async {
+      {bool implicitCasts: true, bool implicitDynamic: true}) async {
     _checkCalled = true;
 
-    File mainFile =
-        _resourceProvider.getFile(_resourceProvider.convertPath('/main.dart'));
+    File mainFile = getFile('/main.dart');
     expect(mainFile.exists, true, reason: '`/main.dart` is missing');
 
     AnalysisOptionsImpl analysisOptions = new AnalysisOptionsImpl();
     analysisOptions.strongModeHints = true;
-    analysisOptions.declarationCasts = declarationCasts;
     analysisOptions.implicitCasts = implicitCasts;
     analysisOptions.implicitDynamic = implicitDynamic;
 
-    var mockSdk = new MockSdk(resourceProvider: _resourceProvider);
+    var mockSdk = new MockSdk(resourceProvider: resourceProvider);
     mockSdk.context.analysisOptions = analysisOptions;
 
     SourceFactory sourceFactory;
     {
-      var uriResolver = new _TestUriResolver(_resourceProvider);
+      var uriResolver = new _TestUriResolver(resourceProvider);
       sourceFactory =
           new SourceFactory([new DartUriResolver(mockSdk), uriResolver]);
     }
@@ -311,7 +306,7 @@
       _driver = new AnalysisDriver(
           scheduler,
           log,
-          _resourceProvider,
+          resourceProvider,
           new MemoryByteStore(),
           fileContentOverlay,
           null,
@@ -367,14 +362,12 @@
   ///
   /// Also returns the resolved compilation unit.
   Future<CompilationUnit> checkFile(String content,
-      {bool declarationCasts: true,
-      bool implicitCasts: true,
-      bool implicitDynamic: true}) async {
+      {bool implicitCasts: true, bool implicitDynamic: true}) async {
     addFile(content);
     return await check(
-        declarationCasts: declarationCasts,
-        implicitCasts: implicitCasts,
-        implicitDynamic: implicitDynamic);
+      implicitCasts: implicitCasts,
+      implicitDynamic: implicitDynamic,
+    );
   }
 
   void setUp() {
diff --git a/pkg/analyzer/test/src/task/yaml_test.dart b/pkg/analyzer/test/src/task/yaml_test.dart
index d952887..4342087 100644
--- a/pkg/analyzer/test/src/task/yaml_test.dart
+++ b/pkg/analyzer/test/src/task/yaml_test.dart
@@ -58,9 +58,9 @@
   }
 
   void _performParseTask(String content) {
-    var path = resourceProvider.convertPath('/test.yaml');
+    var path = '/test.yaml';
     if (content == null) {
-      source = resourceProvider.getFile(path).createSource();
+      source = getFile(path).createSource();
     } else {
       source = newSource(path, content);
     }
diff --git a/pkg/analyzer/test/src/test_all.dart b/pkg/analyzer/test/src/test_all.dart
index 369c7b9..20bdbbb 100644
--- a/pkg/analyzer/test/src/test_all.dart
+++ b/pkg/analyzer/test/src/test_all.dart
@@ -9,6 +9,7 @@
 import 'dart/test_all.dart' as dart;
 import 'fasta/test_all.dart' as fasta;
 import 'lint/test_all.dart' as lint;
+import 'options/test_all.dart' as options;
 import 'pubspec/test_all.dart' as pubspec;
 import 'source/test_all.dart' as source;
 import 'summary/test_all.dart' as summary;
@@ -23,6 +24,7 @@
     dart.main();
     fasta.main();
     lint.main();
+    options.main();
     pubspec.main();
     source.main();
     summary.main();
diff --git a/pkg/analyzer/test/generated/bazel_test.dart b/pkg/analyzer/test/src/workspace/bazel_test.dart
similarity index 98%
rename from pkg/analyzer/test/generated/bazel_test.dart
rename to pkg/analyzer/test/src/workspace/bazel_test.dart
index e339b74..2fff988 100644
--- a/pkg/analyzer/test/generated/bazel_test.dart
+++ b/pkg/analyzer/test/src/workspace/bazel_test.dart
@@ -1,10 +1,10 @@
-// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/src/generated/bazel.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
+import 'package:analyzer/src/workspace/bazel.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -17,7 +17,7 @@
 }
 
 @reflectiveTest
-class BazelFileUriResolverTest extends Object with ResourceProviderMixin {
+class BazelFileUriResolverTest with ResourceProviderMixin {
   BazelWorkspace workspace;
   BazelFileUriResolver resolver;
 
@@ -97,7 +97,7 @@
 }
 
 @reflectiveTest
-class BazelPackageUriResolverTest extends Object with ResourceProviderMixin {
+class BazelPackageUriResolverTest with ResourceProviderMixin {
   BazelWorkspace workspace;
   BazelPackageUriResolver resolver;
 
@@ -482,12 +482,12 @@
 }
 
 @reflectiveTest
-class BazelWorkspaceTest extends Object with ResourceProviderMixin {
+class BazelWorkspaceTest with ResourceProviderMixin {
   void test_find_fail_notAbsolute() {
     expect(
         () =>
             BazelWorkspace.find(resourceProvider, convertPath('not_absolute')),
-        throwsArgumentError);
+        throwsA(const TypeMatcher<AssertionError>()));
   }
 
   void test_find_hasReadonlyFolder() {
diff --git a/pkg/analyzer/test/generated/gn_test.dart b/pkg/analyzer/test/src/workspace/gn_test.dart
similarity index 96%
rename from pkg/analyzer/test/generated/gn_test.dart
rename to pkg/analyzer/test/src/workspace/gn_test.dart
index 46ff4ea..99e3c00 100644
--- a/pkg/analyzer/test/generated/gn_test.dart
+++ b/pkg/analyzer/test/src/workspace/gn_test.dart
@@ -1,9 +1,9 @@
-// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/src/generated/gn.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
+import 'package:analyzer/src/workspace/gn.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -14,7 +14,7 @@
 }
 
 @reflectiveTest
-class GnWorkspaceTest extends Object with ResourceProviderMixin {
+class GnWorkspaceTest with ResourceProviderMixin {
   void test_find_noJiriRoot() {
     newFolder('/workspace');
     GnWorkspace workspace =
@@ -33,7 +33,7 @@
   void test_find_notAbsolute() {
     expect(
         () => GnWorkspace.find(resourceProvider, convertPath('not_absolute')),
-        throwsArgumentError);
+        throwsA(const TypeMatcher<AssertionError>()));
   }
 
   void test_find_withRoot() {
diff --git a/pkg/analyzer/test/generated/package_build_test.dart b/pkg/analyzer/test/src/workspace/package_build_test.dart
similarity index 96%
rename from pkg/analyzer/test/generated/package_build_test.dart
rename to pkg/analyzer/test/src/workspace/package_build_test.dart
index 81b7d35..9f7d917 100644
--- a/pkg/analyzer/test/generated/package_build_test.dart
+++ b/pkg/analyzer/test/src/workspace/package_build_test.dart
@@ -1,12 +1,12 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/context/builder.dart';
-import 'package:analyzer/src/generated/package_build.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
+import 'package:analyzer/src/workspace/package_build.dart';
 import 'package:package_config/packages.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
@@ -46,8 +46,7 @@
 }
 
 @reflectiveTest
-class PackageBuildFileUriResolverTest extends Object
-    with ResourceProviderMixin {
+class PackageBuildFileUriResolverTest with ResourceProviderMixin {
   PackageBuildWorkspace workspace;
   PackageBuildFileUriResolver resolver;
 
@@ -116,16 +115,14 @@
         uri);
   }
 
-  Source _resolvePath(String absolutePosixPath) {
-    String absolutePath = resourceProvider.convertPath(absolutePosixPath);
-    Uri uri = resourceProvider.pathContext.toUri(absolutePath);
+  Source _resolvePath(String path) {
+    Uri uri = toUri(path);
     return resolver.resolveAbsolute(uri);
   }
 }
 
 @reflectiveTest
-class PackageBuildPackageUriResolverTest extends Object
-    with ResourceProviderMixin {
+class PackageBuildPackageUriResolverTest with ResourceProviderMixin {
   PackageBuildWorkspace workspace;
   PackageBuildPackageUriResolver resolver;
   MockUriResolver packageUriResolver;
@@ -230,7 +227,7 @@
 }
 
 @reflectiveTest
-class PackageBuildWorkspaceTest extends Object with ResourceProviderMixin {
+class PackageBuildWorkspaceTest with ResourceProviderMixin {
   void test_builtFile_currentProject() {
     newFolder('/workspace/.dart_tool/build');
     newFileWithBytes('/workspace/pubspec.yaml', 'name: project'.codeUnits);
@@ -273,7 +270,7 @@
     expect(
         () => PackageBuildWorkspace.find(resourceProvider,
             convertPath('not_absolute'), new MockContextBuilder()),
-        throwsArgumentError);
+        throwsA(const TypeMatcher<AssertionError>()));
   }
 
   void test_find_hasDartToolAndPubspec() {
diff --git a/pkg/analyzer/test/src/workspace/test_all.dart b/pkg/analyzer/test/src/workspace/test_all.dart
new file mode 100644
index 0000000..351175b
--- /dev/null
+++ b/pkg/analyzer/test/src/workspace/test_all.dart
@@ -0,0 +1,17 @@
+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'package:test_reflective_loader/test_reflective_loader.dart';
+
+import 'bazel_test.dart' as bazel_test;
+import 'gn_test.dart' as gn_test;
+import 'package_build_test.dart' as package_build_test;
+
+main() {
+  defineReflectiveSuite(() {
+    bazel_test.main();
+    gn_test.main();
+    package_build_test.main();
+  }, name: 'workspace');
+}
diff --git a/pkg/analyzer/tool/task_dependency_graph/generate.dart b/pkg/analyzer/tool/task_dependency_graph/generate.dart
index 739ac6c..3a9aa7b 100644
--- a/pkg/analyzer/tool/task_dependency_graph/generate.dart
+++ b/pkg/analyzer/tool/task_dependency_graph/generate.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -19,13 +19,18 @@
 import 'dart:io' hide File;
 import 'dart:io' as io;
 
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/dart/analysis/results.dart';
+import 'package:analyzer/dart/ast/ast.dart';
+import 'package:analyzer/dart/ast/visitor.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/file_system/physical_file_system.dart';
+import 'package:analyzer/src/codegen/tools.dart';
 import 'package:analyzer/src/context/builder.dart';
+import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
+import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:analyzer/src/dart/sdk/sdk.dart';
 import 'package:analyzer/src/file_system/file_system.dart';
 import 'package:analyzer/src/generated/constant.dart';
@@ -35,9 +40,6 @@
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
-import 'package:analyzer/src/dart/analysis/byte_store.dart';
-import 'package:analyzer/src/dart/analysis/performance_logger.dart';
-import 'package:analyzer/src/codegen/tools.dart';
 import 'package:front_end/src/testing/package_root.dart' as package_root;
 import 'package:path/path.dart' as path;
 import 'package:path/path.dart';
diff --git a/pkg/analyzer_cli/lib/src/analyzer_impl.dart b/pkg/analyzer_cli/lib/src/analyzer_impl.dart
index 1974fc4..e36008f 100644
--- a/pkg/analyzer_cli/lib/src/analyzer_impl.dart
+++ b/pkg/analyzer_cli/lib/src/analyzer_impl.dart
@@ -7,6 +7,7 @@
 import 'dart:async';
 import 'dart:io';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/exception/exception.dart';
diff --git a/pkg/analyzer_cli/lib/src/build_mode.dart b/pkg/analyzer_cli/lib/src/build_mode.dart
index 206341a..5228897 100644
--- a/pkg/analyzer_cli/lib/src/build_mode.dart
+++ b/pkg/analyzer_cli/lib/src/build_mode.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -9,10 +9,14 @@
 import 'dart:isolate';
 
 import 'package:analyzer/dart/analysis/declared_variables.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/file_system/file_system.dart';
+import 'package:analyzer/src/dart/analysis/byte_store.dart';
+import 'package:analyzer/src/dart/analysis/cache.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
+import 'package:analyzer/src/dart/analysis/performance_logger.dart';
 import 'package:analyzer/src/dart/sdk/sdk.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
@@ -35,9 +39,6 @@
 import 'package:bazel_worker/bazel_worker.dart';
 import 'package:collection/collection.dart';
 import 'package:convert/convert.dart';
-import 'package:analyzer/src/dart/analysis/byte_store.dart';
-import 'package:analyzer/src/dart/analysis/performance_logger.dart';
-import 'package:analyzer/src/dart/analysis/cache.dart';
 
 /**
  * Persistent Bazel worker.
@@ -58,14 +59,6 @@
         resourceProvider, logger, 256 * 1024 * 1024);
   }
 
-  factory AnalyzerWorkerLoop.std(ResourceProvider resourceProvider,
-      {io.Stdin stdinStream, io.Stdout stdoutStream, String dartSdkPath}) {
-    AsyncWorkerConnection connection = new StdAsyncWorkerConnection(
-        inputStream: stdinStream, outputStream: stdoutStream);
-    return new AnalyzerWorkerLoop(resourceProvider, connection,
-        dartSdkPath: dartSdkPath);
-  }
-
   factory AnalyzerWorkerLoop.sendPort(
       ResourceProvider resourceProvider, SendPort sendPort,
       {String dartSdkPath}) {
@@ -75,6 +68,14 @@
         dartSdkPath: dartSdkPath);
   }
 
+  factory AnalyzerWorkerLoop.std(ResourceProvider resourceProvider,
+      {io.Stdin stdinStream, io.Stdout stdoutStream, String dartSdkPath}) {
+    AsyncWorkerConnection connection = new StdAsyncWorkerConnection(
+        inputStream: stdinStream, outputStream: stdoutStream);
+    return new AnalyzerWorkerLoop(resourceProvider, connection,
+        dartSdkPath: dartSdkPath);
+  }
+
   /**
    * Performs analysis with given [options].
    */
@@ -174,7 +175,7 @@
 /**
  * Analyzer used when the "--build-mode" option is supplied.
  */
-class BuildMode extends Object with HasContextMixin {
+class BuildMode with HasContextMixin {
   final ResourceProvider resourceProvider;
   final CommandLineOptions options;
   final AnalysisStats stats;
diff --git a/pkg/analyzer_cli/lib/src/context_cache.dart b/pkg/analyzer_cli/lib/src/context_cache.dart
index 0e875ce..3c2abe1 100644
--- a/pkg/analyzer_cli/lib/src/context_cache.dart
+++ b/pkg/analyzer_cli/lib/src/context_cache.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -87,15 +87,16 @@
   /// automatically.
   AnalysisOptionsImpl _getAnalysisOptions() {
     AnalysisOptionsImpl contextOptions = builder.getAnalysisOptions(
-        requestedSourceDirectory,
-        verbosePrint: clOptions.verbose ? verbosePrint : null);
+            requestedSourceDirectory,
+            verbosePrint: clOptions.verbose ? verbosePrint : null)
+        as AnalysisOptionsImpl;
 
     contextOptions.trackCacheDependencies = false;
     contextOptions.disableCacheFlushing = clOptions.disableCacheFlushing;
+    contextOptions.enabledExperiments = clOptions.enabledExperiments;
     contextOptions.hint = !clOptions.disableHints;
     contextOptions.generateImplicitErrors = clOptions.showPackageWarnings;
     contextOptions.generateSdkErrors = clOptions.showSdkWarnings;
-    contextOptions.previewDart2 = clOptions.previewDart2;
     contextOptions.useFastaParser = clOptions.useFastaParser;
     return contextOptions;
   }
diff --git a/pkg/analyzer_cli/lib/src/driver.dart b/pkg/analyzer_cli/lib/src/driver.dart
index 63ed79f..b5715bd 100644
--- a/pkg/analyzer_cli/lib/src/driver.dart
+++ b/pkg/analyzer_cli/lib/src/driver.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -93,7 +93,7 @@
   _analytics = replacementAnalytics;
 }
 
-class Driver extends Object with HasContextMixin implements CommandLineStarter {
+class Driver with HasContextMixin implements CommandLineStarter {
   static final PerformanceTag _analyzeAllTag =
       new PerformanceTag("Driver._analyzeAll");
 
@@ -479,7 +479,7 @@
       AnalysisOptions analysisOptions) {
     // Create a custom package resolver if one has been specified.
     if (packageResolverProvider != null) {
-      file_system.Folder folder = resourceProvider.getResource('.');
+      file_system.Folder folder = resourceProvider.getFolder('.');
       UriResolver resolver = packageResolverProvider(folder);
       if (resolver != null) {
         // TODO(brianwilkerson) This doesn't handle sdk extensions.
diff --git a/pkg/analyzer_cli/lib/src/error_formatter.dart b/pkg/analyzer_cli/lib/src/error_formatter.dart
index 0c84618..e5ca66b 100644
--- a/pkg/analyzer_cli/lib/src/error_formatter.dart
+++ b/pkg/analyzer_cli/lib/src/error_formatter.dart
@@ -262,7 +262,7 @@
   void formatError(
       Map<AnalysisError, LineInfo> errorToLine, AnalysisError error) {
     Source source = error.source;
-    CharacterLocation location = errorToLine[error].getLocation(error.offset);
+    var location = errorToLine[error].getLocation(error.offset);
 
     ErrorSeverity severity = _severityProcessor(error);
 
@@ -323,7 +323,7 @@
   void formatError(
       Map<AnalysisError, LineInfo> errorToLine, AnalysisError error) {
     Source source = error.source;
-    CharacterLocation location = errorToLine[error].getLocation(error.offset);
+    var location = errorToLine[error].getLocation(error.offset);
     int length = error.length;
 
     ErrorSeverity severity = _severityProcessor(error);
diff --git a/pkg/analyzer_cli/lib/src/options.dart b/pkg/analyzer_cli/lib/src/options.dart
index 640fd1a..6b4215b 100644
--- a/pkg/analyzer_cli/lib/src/options.dart
+++ b/pkg/analyzer_cli/lib/src/options.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -7,6 +7,7 @@
 import 'package:analyzer/file_system/physical_file_system.dart';
 import 'package:analyzer/src/command_line/arguments.dart';
 import 'package:analyzer/src/context/builder.dart';
+import 'package:analyzer/src/dart/analysis/experiments.dart';
 import 'package:analyzer/src/util/sdk.dart';
 import 'package:analyzer_cli/src/ansi.dart' as ansi;
 import 'package:analyzer_cli/src/driver.dart';
@@ -35,9 +36,6 @@
 
 /// Analyzer commandline configuration options.
 class CommandLineOptions {
-  /// Whether declaration casts are enabled (in strong mode)
-  final bool declarationCasts;
-
   /// The path to output analysis results when in build mode.
   final String buildAnalysisOutput;
 
@@ -93,6 +91,9 @@
   /// Whether to display version information
   final bool displayVersion;
 
+  /// A list of the names of the experiments that are to be enabled.
+  final List<String> enabledExperiments;
+
   /// Whether to ignore unrecognized flags
   final bool ignoreUnrecognizedFlags;
 
@@ -176,12 +177,11 @@
         contextBuilderOptions = createContextBuilderOptions(args),
         dartSdkPath = cast(args['dart-sdk']),
         dartSdkSummaryPath = cast(args['dart-sdk-summary']),
-        declarationCasts = args.wasParsed(declarationCastsFlag)
-            ? cast(args[declarationCastsFlag])
-            : cast(args[implicitCastsFlag]),
         disableCacheFlushing = cast(args['disable-cache-flushing']),
         disableHints = cast(args['no-hints']),
         displayVersion = cast(args['version']),
+        enabledExperiments =
+            cast(args['enable-experiment'] ?? const <String>[]),
         ignoreUnrecognizedFlags = cast(args['ignore-unrecognized-flags']),
         lints = cast(args[lintsFlag]),
         log = cast(args['log']),
@@ -219,11 +219,6 @@
   String get packageRootPath =>
       contextBuilderOptions.defaultPackagesDirectoryPath;
 
-  /// Whether to enable the Dart 2.0 Preview.
-  ///
-  /// This flag is deprecated and hard-coded to `true`.
-  bool get previewDart2 => true;
-
   /// The source files to analyze
   List<String> get sourceFiles => _sourceFiles;
 
@@ -338,6 +333,11 @@
           help: 'Print the analyzer version.',
           defaultsTo: false,
           negatable: false)
+      ..addMultiOption('enable-experiment',
+          help:
+              'Enable one or more experimental features. If multiple features '
+              'are being added, they should be comma separated.',
+          splitCommas: true)
       ..addFlag('no-hints',
           help: 'Do not show hint results.',
           defaultsTo: false,
@@ -592,6 +592,23 @@
             'Note: the --strong flag is deprecated and will be removed in an '
             'future release.\n');
       }
+      if (results.wasParsed('enable-experiment')) {
+        List<String> names =
+            (results['enable-experiment'] as List).cast<String>().toList();
+        for (String knownName in Experiments.activeExperimentNames) {
+          names.remove(knownName);
+        }
+        if (names.isNotEmpty) {
+          StringBuffer buffer = new StringBuffer();
+          for (String invalidName in names) {
+            if (buffer.length > 0) {
+              buffer.write(', ');
+            }
+            buffer.write(invalidName);
+          }
+          errorSink.writeln('Unknown experiments: $buffer');
+        }
+      }
 
       return new CommandLineOptions._fromArgs(results);
     } on FormatException catch (e) {
diff --git a/pkg/analyzer_cli/test/all.dart b/pkg/analyzer_cli/test/all.dart
index b5015f7..a16799b 100644
--- a/pkg/analyzer_cli/test/all.dart
+++ b/pkg/analyzer_cli/test/all.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -6,7 +6,6 @@
 import 'build_mode_test.dart' as build_mode_test;
 import 'driver_test.dart' as driver_test;
 import 'embedder_test.dart' as embedder_test;
-import 'error_test.dart' as error_test;
 import 'errors_reported_once_test.dart' as errors_reported_once_test;
 import 'errors_upgrade_fails_cli_test.dart' as errors_upgrade_fails_cli_test;
 import 'options_test.dart' as options_test;
@@ -21,7 +20,6 @@
   build_mode_test.main();
   driver_test.main();
   embedder_test.main();
-  error_test.main();
   errors_reported_once_test.main();
   errors_upgrade_fails_cli_test.main();
   options_test.main();
diff --git a/pkg/analyzer_cli/test/driver_test.dart b/pkg/analyzer_cli/test/driver_test.dart
index cb85943..7b205a1 100644
--- a/pkg/analyzer_cli/test/driver_test.dart
+++ b/pkg/analyzer_cli/test/driver_test.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
@@ -952,15 +952,11 @@
   }
 
   void _expectUndefinedClassErrorsWithoutExclusions() {
-    bool isStrong = usePreviewDart2 || new AnalysisOptionsImpl().previewDart2;
-    final String issueType = isStrong ? 'error' : 'warning';
     expect(bulletToDash(outSink),
-        contains("$issueType - Undefined class 'IncludedUndefinedClass'"));
-    expect(
-        bulletToDash(outSink),
-        isNot(
-            contains("$issueType - Undefined class 'ExcludedUndefinedClass'")));
-    expect(outSink.toString(), contains("1 $issueType found."));
+        contains("error - Undefined class 'IncludedUndefinedClass'"));
+    expect(bulletToDash(outSink),
+        isNot(contains("error - Undefined class 'ExcludedUndefinedClass'")));
+    expect(outSink.toString(), contains("1 error found."));
   }
 }
 
diff --git a/pkg/analyzer_cli/test/error_test.dart b/pkg/analyzer_cli/test/error_test.dart
deleted file mode 100644
index c8d1d0f..0000000
--- a/pkg/analyzer_cli/test/error_test.dart
+++ /dev/null
@@ -1,55 +0,0 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library analyzer_cli.test.error;
-
-import 'package:test/test.dart';
-
-import 'utils.dart';
-
-const badDeclaration = 'var int foo;';
-const badDeclarationMessage = 'Error in test.dart: '
-    'Variables can\'t be declared using both \'var\' and a type name.\n';
-
-void main() {
-  group('error', () {
-    test("a valid Dart file doesn't throw any errors", () {
-      expect(errorsForFile('void main() => print("Hello, world!");'), isNull);
-    });
-
-    test("an empty Dart file doesn't throw any errors", () {
-      expect(errorsForFile(''), isNull);
-    });
-
-    test("an error on the first line", () {
-      expect(errorsForFile('$badDeclaration\n'), equals(badDeclarationMessage));
-    });
-
-    test("an error on the last line", () {
-      expect(errorsForFile('\n$badDeclaration'), equals(badDeclarationMessage));
-    });
-
-    test("an error in the middle", () {
-      expect(
-          errorsForFile('\n$badDeclaration\n'), equals(badDeclarationMessage));
-    });
-
-    var veryLongString = new List.filled(107, ' ').join('');
-
-    test("an error at the end of a very long line", () {
-      expect(errorsForFile('$veryLongString     $badDeclaration'),
-          equals(badDeclarationMessage));
-    });
-
-    test("an error at the beginning of a very long line", () {
-      expect(errorsForFile('$badDeclaration     $veryLongString'),
-          equals(badDeclarationMessage));
-    });
-
-    test("an error in the middle of a very long line", () {
-      expect(errorsForFile('$veryLongString $badDeclaration$veryLongString'),
-          equals(badDeclarationMessage));
-    });
-  });
-}
diff --git a/pkg/analyzer_cli/test/mocks.dart b/pkg/analyzer_cli/test/mocks.dart
index 985464c..49f7251 100644
--- a/pkg/analyzer_cli/test/mocks.dart
+++ b/pkg/analyzer_cli/test/mocks.dart
@@ -1,8 +1,8 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/error/error.dart';
 import 'package:analyzer/source/line_info.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
diff --git a/pkg/analyzer_cli/test/options_test.dart b/pkg/analyzer_cli/test/options_test.dart
index b0c8a8c..6001816 100644
--- a/pkg/analyzer_cli/test/options_test.dart
+++ b/pkg/analyzer_cli/test/options_test.dart
@@ -1,9 +1,7 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library analyzer_cli.test.options;
-
 import 'dart:io';
 
 import 'package:analyzer_cli/src/driver.dart';
@@ -58,6 +56,7 @@
         expect(options.dartSdkPath, isNotNull);
         expect(options.disableCacheFlushing, isFalse);
         expect(options.disableHints, isFalse);
+        expect(options.enabledExperiments, isEmpty);
         expect(options.lints, isFalse);
         expect(options.displayVersion, isFalse);
         expect(options.infosAreFatal, isFalse);
@@ -72,7 +71,6 @@
         expect(options.warningsAreFatal, isFalse);
         expect(options.strongMode, isTrue);
         expect(options.lintsAreFatal, isFalse);
-        expect(options.previewDart2, isTrue);
         expect(options.trainSnapshot, isFalse);
       });
 
@@ -95,6 +93,49 @@
         expect(options.disableCacheFlushing, isTrue);
       });
 
+      group('enable experiment', () {
+        test('no values', () {
+          CommandLineOptions options = CommandLineOptions.parse(['foo.dart']);
+          expect(options.enabledExperiments, isEmpty);
+        });
+
+        test('single value', () {
+          CommandLineOptions options = CommandLineOptions.parse(
+              ['--enable-experiment', 'a', 'foo.dart']);
+          expect(options.enabledExperiments, ['a']);
+        });
+
+        group('multiple values', () {
+          test('single flag', () {
+            CommandLineOptions options = CommandLineOptions.parse(
+                ['--enable-experiment', 'a,b', 'foo.dart']);
+            expect(options.enabledExperiments, ['a', 'b']);
+          });
+
+          test('mixed single and multiple flags', () {
+            CommandLineOptions options = CommandLineOptions.parse([
+              '--enable-experiment',
+              'a,b',
+              '--enable-experiment',
+              'c',
+              'foo.dart'
+            ]);
+            expect(options.enabledExperiments, ['a', 'b', 'c']);
+          });
+
+          test('multiple flags', () {
+            CommandLineOptions options = CommandLineOptions.parse([
+              '--enable-experiment',
+              'a',
+              '--enable-experiment',
+              'b',
+              'foo.dart'
+            ]);
+            expect(options.enabledExperiments, ['a', 'b']);
+          });
+        });
+      });
+
       test('hintsAreFatal', () {
         CommandLineOptions options = CommandLineOptions.parse(
             ['--dart-sdk', '.', '--fatal-hints', 'foo.dart']);
@@ -231,12 +272,6 @@
         expect(options.useFastaParser, isTrue);
       });
 
-      test('--preview-dart-2', () {
-        CommandLineOptions options =
-            CommandLineOptions.parse(['--preview-dart-2', 'foo.dart']);
-        expect(options.previewDart2, isTrue);
-      });
-
       test('--train-snapshot', () {
         CommandLineOptions options =
             CommandLineOptions.parse(['--train-snapshot', 'foo.dart']);
diff --git a/pkg/analyzer_cli/test/reporter_test.dart b/pkg/analyzer_cli/test/reporter_test.dart
index a86c03d..26d37ac 100644
--- a/pkg/analyzer_cli/test/reporter_test.dart
+++ b/pkg/analyzer_cli/test/reporter_test.dart
@@ -1,8 +1,8 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/analyzer.dart';
+import 'package:analyzer/error/error.dart';
 import 'package:analyzer/source/line_info.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer_cli/src/ansi.dart' as ansi;
diff --git a/pkg/analyzer_cli/test/utils.dart b/pkg/analyzer_cli/test/utils.dart
index fd431a2..3803341 100644
--- a/pkg/analyzer_cli/test/utils.dart
+++ b/pkg/analyzer_cli/test/utils.dart
@@ -1,14 +1,11 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library analyzer_cli.test.utils;
-
 import 'dart:async';
 import 'dart:io';
 import 'dart:mirrors';
 
-import 'package:analyzer/analyzer.dart';
 import 'package:path/path.dart' as pathos;
 
 /// Gets the test directory in a way that works with package:test
@@ -16,30 +13,6 @@
 final String testDirectory = pathos.dirname(
     pathos.fromUri((reflectClass(_TestUtils).owner as LibraryMirror).uri));
 
-/// Returns the string representation of the [AnalyzerErrorGroup] thrown when
-/// parsing [contents] as a Dart file. If [contents] doesn't throw any errors,
-/// this will return null.
-///
-/// This replaces the filename in the error string with its basename, since the
-/// full path will vary from machine to machine. It also replaces the exception
-/// message with "..." to decouple these tests from the specific exception
-/// messages.
-String errorsForFile(String contents) {
-  return withTempDir((temp) {
-    var path = pathos.join(temp, 'test.dart');
-    new File(path).writeAsStringSync(contents);
-    try {
-      parseDartFile(path);
-    } on AnalyzerErrorGroup catch (e) {
-      return e.toString().replaceAllMapped(
-          new RegExp(r"^(Error on line \d+ of )((?:[A-Z]+:)?[^:]+): .*$",
-              multiLine: true),
-          (match) => match[1] + pathos.basename(match[2]) + ': ...');
-    }
-    return null;
-  });
-}
-
 /// Recursively copy the specified [src] directory (or file)
 /// to the specified destination path.
 Future<Null> recursiveCopy(FileSystemEntity src, String dstPath) async {
diff --git a/pkg/analyzer_plugin/lib/plugin/assist_mixin.dart b/pkg/analyzer_plugin/lib/plugin/assist_mixin.dart
index 9eb8286..d17d4cd 100644
--- a/pkg/analyzer_plugin/lib/plugin/assist_mixin.dart
+++ b/pkg/analyzer_plugin/lib/plugin/assist_mixin.dart
@@ -17,10 +17,10 @@
  * A mixin that can be used when creating a subclass of [ServerPlugin] to
  * provide most of the implementation for handling assist requests.
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin].
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin].
  */
-abstract class AssistsMixin implements ServerPlugin {
+mixin AssistsMixin implements ServerPlugin {
   /**
    * Return a list containing the assist contributors that should be used to
    * create assists for the file with the given [path].
@@ -67,7 +67,7 @@
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     String path = parameters.file;
-    ResolveResult result = await getResolveResult(path);
+    ResolvedUnitResult result = await getResolvedUnitResult(path);
     return new DartAssistRequestImpl(
         resourceProvider, parameters.offset, parameters.length, result);
   }
diff --git a/pkg/analyzer_plugin/lib/plugin/completion_mixin.dart b/pkg/analyzer_plugin/lib/plugin/completion_mixin.dart
index 72de7ce..a8aa3b8 100644
--- a/pkg/analyzer_plugin/lib/plugin/completion_mixin.dart
+++ b/pkg/analyzer_plugin/lib/plugin/completion_mixin.dart
@@ -17,10 +17,10 @@
  * A mixin that can be used when creating a subclass of [ServerPlugin] to
  * provide most of the implementation for handling code completion requests.
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin].
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin].
  */
-abstract class CompletionMixin implements ServerPlugin {
+mixin CompletionMixin implements ServerPlugin {
   /**
    * Return a list containing the completion contributors that should be used to
    * create completion suggestions for the file with the given [path].
@@ -68,7 +68,7 @@
       CompletionGetSuggestionsParams parameters) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    ResolveResult result = await getResolveResult(parameters.file);
+    ResolvedUnitResult result = await getResolvedUnitResult(parameters.file);
     return new DartCompletionRequestImpl(
         resourceProvider, parameters.offset, result);
   }
diff --git a/pkg/analyzer_plugin/lib/plugin/fix_mixin.dart b/pkg/analyzer_plugin/lib/plugin/fix_mixin.dart
index 917dc3e..a4a113d 100644
--- a/pkg/analyzer_plugin/lib/plugin/fix_mixin.dart
+++ b/pkg/analyzer_plugin/lib/plugin/fix_mixin.dart
@@ -20,23 +20,23 @@
  * mixing in [FixesMixin]. This implements the creation of the fixes request
  * based on the assumption that the driver being created is an [AnalysisDriver].
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin] that also uses
- * [FixesMixin] as a mix-in.
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin] that also uses [FixesMixin] as a
+ * mix-in.
  */
-abstract class DartFixesMixin implements FixesMixin {
+mixin DartFixesMixin implements FixesMixin {
   @override
   Future<FixesRequest> getFixesRequest(EditGetFixesParams parameters) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     String path = parameters.file;
     int offset = parameters.offset;
-    ResolveResult result = await getResolveResult(path);
+    ResolvedUnitResult result = await getResolvedUnitResult(path);
     return new DartFixesRequestImpl(
         resourceProvider, offset, _getErrors(offset, result), result);
   }
 
-  List<AnalysisError> _getErrors(int offset, ResolveResult result) {
+  List<AnalysisError> _getErrors(int offset, ResolvedUnitResult result) {
     LineInfo lineInfo = result.lineInfo;
     int offsetLine = lineInfo.getLocation(offset).lineNumber;
     return result.errors.where((AnalysisError error) {
@@ -50,10 +50,10 @@
  * A mixin that can be used when creating a subclass of [ServerPlugin] to
  * provide most of the implementation for handling fix requests.
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin].
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin].
  */
-abstract class FixesMixin implements ServerPlugin {
+mixin FixesMixin implements ServerPlugin {
   /**
    * Return a list containing the fix contributors that should be used to create
    * fixes for the file with the given [path].
diff --git a/pkg/analyzer_plugin/lib/plugin/folding_mixin.dart b/pkg/analyzer_plugin/lib/plugin/folding_mixin.dart
index 3c8d88c..1ca0f81 100644
--- a/pkg/analyzer_plugin/lib/plugin/folding_mixin.dart
+++ b/pkg/analyzer_plugin/lib/plugin/folding_mixin.dart
@@ -18,16 +18,16 @@
  * request based on the assumption that the driver being created is an
  * [AnalysisDriver].
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin] that also uses
- * [FoldingMixin] as a mix-in.
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin] that also uses [FoldingMixin] as a
+ * mix-in.
  */
-abstract class DartFoldingMixin implements FoldingMixin {
+mixin DartFoldingMixin implements FoldingMixin {
   @override
   Future<FoldingRequest> getFoldingRequest(String path) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    ResolveResult result = await getResolveResult(path);
+    ResolvedUnitResult result = await getResolvedUnitResult(path);
     return new DartFoldingRequestImpl(resourceProvider, result);
   }
 }
@@ -36,10 +36,10 @@
  * A mixin that can be used when creating a subclass of [ServerPlugin] to
  * provide most of the implementation for producing folding notifications.
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin].
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin].
  */
-abstract class FoldingMixin implements ServerPlugin {
+mixin FoldingMixin implements ServerPlugin {
   /**
    * Return a list containing the folding contributors that should be used
    * to create folding regions for the file with the given [path].
diff --git a/pkg/analyzer_plugin/lib/plugin/highlights_mixin.dart b/pkg/analyzer_plugin/lib/plugin/highlights_mixin.dart
index a401db8..20748c9 100644
--- a/pkg/analyzer_plugin/lib/plugin/highlights_mixin.dart
+++ b/pkg/analyzer_plugin/lib/plugin/highlights_mixin.dart
@@ -18,16 +18,16 @@
  * highlighting request based on the assumption that the driver being created is
  * an [AnalysisDriver].
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin] that also uses
- * [HighlightsMixin] as a mix-in.
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin] that also uses [HighlightsMixin]
+ * as a mix-in.
  */
-abstract class DartHighlightsMixin implements HighlightsMixin {
+mixin DartHighlightsMixin implements HighlightsMixin {
   @override
   Future<HighlightsRequest> getHighlightsRequest(String path) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    ResolveResult result = await getResolveResult(path);
+    ResolvedUnitResult result = await getResolvedUnitResult(path);
     return new DartHighlightsRequestImpl(resourceProvider, result);
   }
 }
@@ -36,10 +36,10 @@
  * A mixin that can be used when creating a subclass of [ServerPlugin] to
  * provide most of the implementation for producing highlighting notifications.
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin].
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin].
  */
-abstract class HighlightsMixin implements ServerPlugin {
+mixin HighlightsMixin implements ServerPlugin {
   /**
    * Return a list containing the highlighting contributors that should be used
    * to create highlighting information for the file with the given [path].
diff --git a/pkg/analyzer_plugin/lib/plugin/kythe_mixin.dart b/pkg/analyzer_plugin/lib/plugin/kythe_mixin.dart
index 999ba57..be89c6c 100644
--- a/pkg/analyzer_plugin/lib/plugin/kythe_mixin.dart
+++ b/pkg/analyzer_plugin/lib/plugin/kythe_mixin.dart
@@ -19,18 +19,18 @@
  * request based on the assumption that the driver being created is an
  * [AnalysisDriver].
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin] that also uses
- * [KytheMixin] as a mix-in.
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin] that also uses [KytheMixin] as a
+ * mix-in.
  */
-abstract class DartEntryMixin implements EntryMixin {
+mixin DartEntryMixin implements EntryMixin {
   @override
   Future<EntryRequest> getEntryRequest(
       KytheGetKytheEntriesParams parameters) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     String path = parameters.file;
-    ResolveResult result = await getResolveResult(path);
+    ResolvedUnitResult result = await getResolvedUnitResult(path);
     return new DartEntryRequestImpl(resourceProvider, result);
   }
 }
@@ -39,10 +39,10 @@
  * A mixin that can be used when creating a subclass of [ServerPlugin] to
  * provide most of the implementation for handling kythe.getEntries requests.
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin].
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin].
  */
-abstract class EntryMixin implements ServerPlugin {
+mixin EntryMixin implements ServerPlugin {
   /**
    * Return a list containing the entry contributors that should be used to
    * create entries for the file with the given [path]
diff --git a/pkg/analyzer_plugin/lib/plugin/navigation_mixin.dart b/pkg/analyzer_plugin/lib/plugin/navigation_mixin.dart
index e1e6e28..96bfdc5 100644
--- a/pkg/analyzer_plugin/lib/plugin/navigation_mixin.dart
+++ b/pkg/analyzer_plugin/lib/plugin/navigation_mixin.dart
@@ -19,18 +19,18 @@
  * request based on the assumption that the driver being created is an
  * [AnalysisDriver].
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin] that also uses
- * [NavigationMixin] as a mix-in.
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin] that also uses [NavigationMixin]
+ * as a mix-in.
  */
-abstract class DartNavigationMixin implements NavigationMixin {
+mixin DartNavigationMixin implements NavigationMixin {
   @override
   Future<NavigationRequest> getNavigationRequest(
       AnalysisGetNavigationParams parameters) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     String path = parameters.file;
-    ResolveResult result = await getResolveResult(path);
+    ResolvedUnitResult result = await getResolvedUnitResult(path);
     int offset = parameters.offset;
     int length = parameters.length;
     if (offset < 0 && length < 0) {
@@ -46,10 +46,10 @@
  * A mixin that can be used when creating a subclass of [ServerPlugin] to
  * provide most of the implementation for handling navigation requests.
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin].
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin].
  */
-abstract class NavigationMixin implements ServerPlugin {
+mixin NavigationMixin implements ServerPlugin {
   /**
    * Return a list containing the navigation contributors that should be used to
    * create navigation information for the file with the given [path]
diff --git a/pkg/analyzer_plugin/lib/plugin/occurrences_mixin.dart b/pkg/analyzer_plugin/lib/plugin/occurrences_mixin.dart
index 5766d9b..8547779 100644
--- a/pkg/analyzer_plugin/lib/plugin/occurrences_mixin.dart
+++ b/pkg/analyzer_plugin/lib/plugin/occurrences_mixin.dart
@@ -18,16 +18,16 @@
  * request based on the assumption that the driver being created is an
  * [AnalysisDriver].
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin] that also uses
- * [OccurrencesMixin] as a mix-in.
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin] that also uses [OccurrencesMixin]
+ * as a mix-in.
  */
-abstract class DartOccurrencesMixin implements OccurrencesMixin {
+mixin DartOccurrencesMixin implements OccurrencesMixin {
   @override
   Future<OccurrencesRequest> getOccurrencesRequest(String path) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    ResolveResult result = await getResolveResult(path);
+    ResolvedUnitResult result = await getResolvedUnitResult(path);
     return new DartOccurrencesRequestImpl(resourceProvider, result);
   }
 }
@@ -36,10 +36,10 @@
  * A mixin that can be used when creating a subclass of [ServerPlugin] to
  * provide most of the implementation for producing occurrences notifications.
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin].
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin].
  */
-abstract class OccurrencesMixin implements ServerPlugin {
+mixin OccurrencesMixin implements ServerPlugin {
   /**
    * Return a list containing the occurrences contributors that should be used
    * to create occurrences information for the file with the given [path].
diff --git a/pkg/analyzer_plugin/lib/plugin/outline_mixin.dart b/pkg/analyzer_plugin/lib/plugin/outline_mixin.dart
index 96bbdc4..4207a25 100644
--- a/pkg/analyzer_plugin/lib/plugin/outline_mixin.dart
+++ b/pkg/analyzer_plugin/lib/plugin/outline_mixin.dart
@@ -18,16 +18,16 @@
  * request based on the assumption that the driver being created is an
  * [AnalysisDriver].
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin] that also uses
- * [OutlineMixin] as a mix-in.
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin] that also uses [OutlineMixin] as a
+ * mix-in.
  */
-abstract class DartOutlineMixin implements OutlineMixin {
+mixin DartOutlineMixin implements OutlineMixin {
   @override
   Future<OutlineRequest> getOutlineRequest(String path) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    ResolveResult result = await getResolveResult(path);
+    ResolvedUnitResult result = await getResolvedUnitResult(path);
     return new DartOutlineRequestImpl(resourceProvider, result);
   }
 }
@@ -36,10 +36,10 @@
  * A mixin that can be used when creating a subclass of [ServerPlugin] to
  * provide most of the implementation for producing outline notifications.
  *
- * Clients may not extend or implement this class, but are allowed to use it as
- * a mix-in when creating a subclass of [ServerPlugin].
+ * Clients may not implement this mixin, but are allowed to use it as a mix-in
+ * when creating a subclass of [ServerPlugin].
  */
-abstract class OutlineMixin implements ServerPlugin {
+mixin OutlineMixin implements ServerPlugin {
   /**
    * Return a list containing the outline contributors that should be used to
    * create outline information for the file with the given [path].
diff --git a/pkg/analyzer_plugin/lib/plugin/plugin.dart b/pkg/analyzer_plugin/lib/plugin/plugin.dart
index 5fb6296..44ad8e9 100644
--- a/pkg/analyzer_plugin/lib/plugin/plugin.dart
+++ b/pkg/analyzer_plugin/lib/plugin/plugin.dart
@@ -208,7 +208,7 @@
    * Throw a [RequestFailure] is the file cannot be analyzed or if the driver
    * associated with the file is not an [AnalysisDriver].
    */
-  Future<ResolveResult> getResolveResult(String path) async {
+  Future<ResolvedUnitResult> getResolvedUnitResult(String path) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
     AnalysisDriverGeneric driver = driverForPath(path);
@@ -217,7 +217,8 @@
       throw new RequestFailure(
           RequestErrorFactory.pluginError('Failed to analyze $path', null));
     }
-    ResolveResult result = await (driver as AnalysisDriver).getResult(path);
+    ResolvedUnitResult result =
+        await (driver as AnalysisDriver).getResult(path);
     ResultState state = result.state;
     if (state != ResultState.VALID) {
       // Return an error from the request.
@@ -228,6 +229,16 @@
   }
 
   /**
+   * Return the result of analyzing the file with the given [path].
+   *
+   * Throw a [RequestFailure] is the file cannot be analyzed or if the driver
+   * associated with the file is not an [AnalysisDriver].
+   */
+  @deprecated
+  Future<ResolveResult> getResolveResult(String path) =>
+      getResolvedUnitResult(path);
+
+  /**
    * Handle an 'analysis.getNavigation' request.
    *
    * Throw a [RequestFailure] if the request could not be handled.
diff --git a/pkg/analyzer_plugin/lib/src/channel/isolate_channel.dart b/pkg/analyzer_plugin/lib/src/channel/isolate_channel.dart
index 8d7b094..aa65532 100644
--- a/pkg/analyzer_plugin/lib/src/channel/isolate_channel.dart
+++ b/pkg/analyzer_plugin/lib/src/channel/isolate_channel.dart
@@ -121,7 +121,7 @@
   void listen(void onRequest(Request request),
       {Function onError, void onDone()}) {
     void onData(data) {
-      Map<String, Object> requestMap = data;
+      Map<String, Object> requestMap = data as Map<String, Object>;
       Request request = new Request.fromJson(requestMap);
       if (request != null) {
         onRequest(request);
diff --git a/pkg/analyzer_plugin/lib/src/utilities/assist/assist.dart b/pkg/analyzer_plugin/lib/src/utilities/assist/assist.dart
index dcbe5eb..95b0893 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/assist/assist.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/assist/assist.dart
@@ -36,7 +36,7 @@
   final int length;
 
   @override
-  final ResolveResult result;
+  final ResolvedUnitResult result;
 
   /**
    * Initialize a newly create request with the given data.
diff --git a/pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_dart.dart b/pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_dart.dart
index 7618568..8a9eba3 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_dart.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/change_builder/change_builder_dart.dart
@@ -44,7 +44,7 @@
       String path, void buildFileEdit(DartFileEditBuilder builder),
       {ImportPrefixGenerator importPrefixGenerator}) {
     return super.addFileEdit(path, (builder) {
-      DartFileEditBuilderImpl dartBuilder = builder;
+      DartFileEditBuilderImpl dartBuilder = builder as DartFileEditBuilderImpl;
       dartBuilder.importPrefixGenerator = importPrefixGenerator;
       buildFileEdit(dartBuilder);
     });
@@ -54,7 +54,7 @@
   Future<DartFileEditBuilderImpl> createFileEditBuilder(String path) async {
     // TODO(brianwilkerson) Determine whether this await is necessary.
     await null;
-    ResolveResult result = await session.getResolvedAst(path);
+    ResolvedUnitResult result = await session.getResolvedUnit(path);
     ResultState state = result?.state ?? ResultState.INVALID_FILE_TYPE;
     if (state == ResultState.INVALID_FILE_TYPE) {
       throw new AnalysisException('Cannot analyze "$path"');
@@ -402,7 +402,7 @@
       }
     }
 
-    ExecutableElement element = signature.element;
+    ExecutableElement element = signature.element as ExecutableElement;
     String prefix = getIndent(1);
     String prefix2 = getIndent(2);
     ElementKind elementKind = element.kind;
@@ -472,10 +472,11 @@
 
       // TO-DO
       write(prefix2);
-      writeln('// TODO: implement $memberName');
+      write('// TODO: implement $memberName');
 
       if (isSetter) {
         if (invokeSuper) {
+          writeln();
           write(prefix2);
           selectAll(() {
             write('super.');
@@ -485,9 +486,13 @@
             write(';');
           });
           writeln();
+        } else {
+          selectHere();
+          writeln();
         }
       } else if (returnType.isVoid) {
         if (invokeSuper) {
+          writeln();
           write(prefix2);
           selectAll(() {
             write('super.');
@@ -502,8 +507,12 @@
             write(');');
           });
           writeln();
+        } else {
+          selectHere();
+          writeln();
         }
       } else {
+        writeln();
         write(prefix2);
         if (invokeSuper) {
           selectAll(() {
diff --git a/pkg/analyzer_plugin/lib/src/utilities/completion/completion_core.dart b/pkg/analyzer_plugin/lib/src/utilities/completion/completion_core.dart
index 209e451..7bf30d5 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/completion/completion_core.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/completion/completion_core.dart
@@ -84,7 +84,7 @@
   final int offset;
 
   @override
-  final ResolveResult result;
+  final ResolvedUnitResult result;
 
   /**
    * A flag indicating whether completion has been aborted.
diff --git a/pkg/analyzer_plugin/lib/src/utilities/completion/completion_target.dart b/pkg/analyzer_plugin/lib/src/utilities/completion/completion_target.dart
index 03fcb97..69a0aae 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/completion/completion_target.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/completion/completion_target.dart
@@ -154,7 +154,7 @@
       if (containingNode is Comment) {
         // Comments are handled specially: we descend into any CommentReference
         // child node that contains the cursor offset.
-        Comment comment = containingNode;
+        Comment comment = containingNode as Comment;
         for (CommentReference commentReference in comment.references) {
           if (commentReference.offset <= offset &&
               offset <= commentReference.end) {
@@ -276,7 +276,7 @@
         token.type.isKeyword || token.type == TokenType.IDENTIFIER;
 
     Token token = droppedToken ??
-        (entity is AstNode ? (entity as AstNode).beginToken : entity);
+        (entity is AstNode ? (entity as AstNode).beginToken : entity as Token);
     if (token != null && requestOffset < token.offset) {
       token = containingNode.findPrevious(token);
     }
diff --git a/pkg/analyzer_plugin/lib/src/utilities/completion/element_suggestion_builder.dart b/pkg/analyzer_plugin/lib/src/utilities/completion/element_suggestion_builder.dart
index 546f664..8b93677 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/completion/element_suggestion_builder.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/completion/element_suggestion_builder.dart
@@ -13,7 +13,7 @@
 /**
  * Common mixin for sharing behavior.
  */
-abstract class ElementSuggestionBuilder {
+mixin ElementSuggestionBuilder {
   // Copied from analysis_server/lib/src/services/completion/dart/suggestion_builder.dart
   /**
    * A collection of completion suggestions.
diff --git a/pkg/analyzer_plugin/lib/src/utilities/completion/optype.dart b/pkg/analyzer_plugin/lib/src/utilities/completion/optype.dart
index a77fe18..e005b30 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/completion/optype.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/completion/optype.dart
@@ -129,21 +129,26 @@
       return optype;
     }
 
-    target.containingNode
-        .accept(new _OpTypeAstVisitor(optype, target.entity, offset));
-    var methodDeclaration =
-        target.containingNode.getAncestor((node) => node is MethodDeclaration);
-    optype.inMethodBody = methodDeclaration != null;
-    optype.inStaticMethodBody =
-        methodDeclaration is MethodDeclaration && methodDeclaration.isStatic;
+    var targetNode = target.containingNode;
+    targetNode.accept(new _OpTypeAstVisitor(optype, target.entity, offset));
 
-    var functionDeclaration = target.containingNode
-        .getAncestor((node) => node is FunctionDeclaration);
-    optype.inFunctionBody = functionDeclaration != null;
+    var functionBody = targetNode.thisOrAncestorOfType<FunctionBody>();
+    if (functionBody != null) {
+      var parent = functionBody.parent;
 
-    var constructorDeclaration = target.containingNode
-        .getAncestor((node) => node is ConstructorDeclaration);
-    optype.inConstructorBody = constructorDeclaration != null;
+      if (parent is ConstructorDeclaration) {
+        optype.inConstructorBody = true;
+      }
+
+      if (parent is FunctionExpression) {
+        optype.inFunctionBody = true;
+      }
+
+      if (parent is MethodDeclaration) {
+        optype.inMethodBody = true;
+        optype.inStaticMethodBody = parent.isStatic;
+      }
+    }
 
     // If a value should be suggested, suggest also constructors.
     if (optype.includeReturnValueSuggestions) {
@@ -482,6 +487,14 @@
   }
 
   @override
+  visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
+    if (identical(entity, node.expression)) {
+      optype.includeReturnValueSuggestions = true;
+      optype.includeTypeNameSuggestions = true;
+    }
+  }
+
+  @override
   visitConstructorName(ConstructorName node) {
     // some PrefixedIdentifier nodes are transformed into
     // ConstructorName nodes during the resolution process.
@@ -548,7 +561,7 @@
     // Given f[], the parser drops the [] from the expression statement
     // but the [] token is the CompletionTarget entity
     if (entity is Token) {
-      Token token = entity;
+      Token token = entity as Token;
       if (token.lexeme == '[]' && offset == token.offset + 1) {
         optype.includeReturnValueSuggestions = true;
         optype.includeTypeNameSuggestions = true;
@@ -976,7 +989,7 @@
   @override
   void visitTopLevelVariableDeclaration(TopLevelVariableDeclaration node) {
     if (entity is Token) {
-      Token token = entity;
+      Token token = entity as Token;
       if (token.isSynthetic || token.lexeme == ';') {
         optype.includeVarNameSuggestions = true;
       }
diff --git a/pkg/analyzer_plugin/lib/src/utilities/fixes/fixes.dart b/pkg/analyzer_plugin/lib/src/utilities/fixes/fixes.dart
index 54d9b45..8973624 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/fixes/fixes.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/fixes/fixes.dart
@@ -23,7 +23,7 @@
   final List<AnalysisError> errorsToFix;
 
   @override
-  final ResolveResult result;
+  final ResolvedUnitResult result;
 
   /**
    * Initialize a newly create request with the given data.
diff --git a/pkg/analyzer_plugin/lib/src/utilities/folding/folding.dart b/pkg/analyzer_plugin/lib/src/utilities/folding/folding.dart
index 1e7eb67f..2d5578c 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/folding/folding.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/folding/folding.dart
@@ -17,7 +17,7 @@
   final ResourceProvider resourceProvider;
 
   @override
-  final ResolveResult result;
+  final ResolvedUnitResult result;
 
   /**
    * Initialize a newly create request with the given data.
diff --git a/pkg/analyzer_plugin/lib/src/utilities/highlights/highlights.dart b/pkg/analyzer_plugin/lib/src/utilities/highlights/highlights.dart
index bb24bcb..8412dac 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/highlights/highlights.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/highlights/highlights.dart
@@ -17,7 +17,7 @@
   final ResourceProvider resourceProvider;
 
   @override
-  final ResolveResult result;
+  final ResolvedUnitResult result;
 
   /**
    * Initialize a newly create request with the given data.
diff --git a/pkg/analyzer_plugin/lib/src/utilities/kythe/entries.dart b/pkg/analyzer_plugin/lib/src/utilities/kythe/entries.dart
index 72256df..eb4163a 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/kythe/entries.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/kythe/entries.dart
@@ -15,7 +15,7 @@
   final ResourceProvider resourceProvider;
 
   @override
-  final ResolveResult result;
+  final ResolvedUnitResult result;
 
   /**
    * Initialize a newly create request with the given data.
diff --git a/pkg/analyzer_plugin/lib/src/utilities/navigation/navigation.dart b/pkg/analyzer_plugin/lib/src/utilities/navigation/navigation.dart
index f8b4b11..31e004b 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/navigation/navigation.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/navigation/navigation.dart
@@ -23,7 +23,7 @@
   final int offset;
 
   @override
-  final ResolveResult result;
+  final ResolvedUnitResult result;
 
   /**
    * Initialize a newly create request with the given data.
diff --git a/pkg/analyzer_plugin/lib/src/utilities/occurrences/occurrences.dart b/pkg/analyzer_plugin/lib/src/utilities/occurrences/occurrences.dart
index 42b95c2..2538191 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/occurrences/occurrences.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/occurrences/occurrences.dart
@@ -16,7 +16,7 @@
   final ResourceProvider resourceProvider;
 
   @override
-  final ResolveResult result;
+  final ResolvedUnitResult result;
 
   /**
    * Initialize a newly create request with the given data.
diff --git a/pkg/analyzer_plugin/lib/src/utilities/outline/outline.dart b/pkg/analyzer_plugin/lib/src/utilities/outline/outline.dart
index f87c5fc..47fba67 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/outline/outline.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/outline/outline.dart
@@ -16,7 +16,7 @@
   final ResourceProvider resourceProvider;
 
   @override
-  final ResolveResult result;
+  final ResolvedUnitResult result;
 
   /**
    * Initialize a newly create request with the given data.
diff --git a/pkg/analyzer_plugin/lib/src/utilities/visitors/local_declaration_visitor.dart b/pkg/analyzer_plugin/lib/src/utilities/visitors/local_declaration_visitor.dart
index ec525ca..ba1ec8f 100644
--- a/pkg/analyzer_plugin/lib/src/utilities/visitors/local_declaration_visitor.dart
+++ b/pkg/analyzer_plugin/lib/src/utilities/visitors/local_declaration_visitor.dart
@@ -35,6 +35,8 @@
 
   void declaredFunctionTypeAlias(FunctionTypeAlias declaration);
 
+  void declaredGenericTypeAlias(GenericTypeAlias declaration);
+
   void declaredLabel(Label label, bool isCaseLabel);
 
   void declaredLocalVar(SimpleIdentifier name, TypeAnnotation type);
@@ -113,6 +115,8 @@
         declaredClassTypeAlias(declaration);
       } else if (declaration is FunctionTypeAlias) {
         declaredFunctionTypeAlias(declaration);
+      } else if (declaration is GenericTypeAlias) {
+        declaredGenericTypeAlias(declaration);
       }
     });
   }
diff --git a/pkg/analyzer_plugin/lib/utilities/analyzer_converter.dart b/pkg/analyzer_plugin/lib/utilities/analyzer_converter.dart
index 5fd4f25..c4fe0c2 100644
--- a/pkg/analyzer_plugin/lib/utilities/analyzer_converter.dart
+++ b/pkg/analyzer_plugin/lib/utilities/analyzer_converter.dart
@@ -36,7 +36,8 @@
     int startLine = -1;
     int startColumn = -1;
     if (lineInfo != null) {
-      analyzer.CharacterLocation lineLocation = lineInfo.getLocation(offset);
+      analyzer.CharacterLocation lineLocation =
+          lineInfo.getLocation(offset) as analyzer.CharacterLocation;
       if (lineLocation != null) {
         startLine = lineLocation.lineNumber;
         startColumn = lineLocation.columnNumber;
@@ -126,6 +127,8 @@
       return plugin.ElementKind.FUNCTION;
     } else if (kind == analyzer.ElementKind.FUNCTION_TYPE_ALIAS) {
       return plugin.ElementKind.FUNCTION_TYPE_ALIAS;
+    } else if (kind == analyzer.ElementKind.GENERIC_FUNCTION_TYPE) {
+      return plugin.ElementKind.FUNCTION_TYPE_ALIAS;
     } else if (kind == analyzer.ElementKind.GETTER) {
       return plugin.ElementKind.GETTER;
     } else if (kind == analyzer.ElementKind.LABEL) {
@@ -340,7 +343,7 @@
       analyzer.LineInfo lineInfo = unitElement.lineInfo;
       if (lineInfo != null) {
         analyzer.CharacterLocation offsetLocation =
-            lineInfo.getLocation(range.offset);
+            lineInfo.getLocation(range.offset) as analyzer.CharacterLocation;
         startLine = offsetLocation.lineNumber;
         startColumn = offsetLocation.columnNumber;
       }
diff --git a/pkg/analyzer_plugin/lib/utilities/assist/assist.dart b/pkg/analyzer_plugin/lib/utilities/assist/assist.dart
index 72c3e0d..7e02aea 100644
--- a/pkg/analyzer_plugin/lib/utilities/assist/assist.dart
+++ b/pkg/analyzer_plugin/lib/utilities/assist/assist.dart
@@ -145,5 +145,5 @@
   /**
    * The analysis result for the file in which the assists are being requested.
    */
-  ResolveResult get result;
+  ResolvedUnitResult get result;
 }
diff --git a/pkg/analyzer_plugin/lib/utilities/completion/completion_core.dart b/pkg/analyzer_plugin/lib/utilities/completion/completion_core.dart
index c037112..6a354cd 100644
--- a/pkg/analyzer_plugin/lib/utilities/completion/completion_core.dart
+++ b/pkg/analyzer_plugin/lib/utilities/completion/completion_core.dart
@@ -160,5 +160,5 @@
    * The analysis result for the file in which the completion is being
    * requested.
    */
-  ResolveResult get result;
+  ResolvedUnitResult get result;
 }
diff --git a/pkg/analyzer_plugin/lib/utilities/completion/inherited_reference_contributor.dart b/pkg/analyzer_plugin/lib/utilities/completion/inherited_reference_contributor.dart
index c3af0db..e3567fc 100644
--- a/pkg/analyzer_plugin/lib/utilities/completion/inherited_reference_contributor.dart
+++ b/pkg/analyzer_plugin/lib/utilities/completion/inherited_reference_contributor.dart
@@ -21,7 +21,7 @@
  * Plugin developers should extend this function and primarily
  * overload `computeSuggestions` (if needed).
  */
-class InheritedReferenceContributor extends Object
+class InheritedReferenceContributor
     with ElementSuggestionBuilder
     implements CompletionContributor {
   @override
diff --git a/pkg/analyzer_plugin/lib/utilities/completion/type_member_contributor.dart b/pkg/analyzer_plugin/lib/utilities/completion/type_member_contributor.dart
index 28ab1f9..dd4a046 100644
--- a/pkg/analyzer_plugin/lib/utilities/completion/type_member_contributor.dart
+++ b/pkg/analyzer_plugin/lib/utilities/completion/type_member_contributor.dart
@@ -151,7 +151,7 @@
       // Determine the name of the containing method because
       // the most likely completion is a super expression with same name
       MethodDeclaration containingMethod =
-          expression.getAncestor((p) => p is MethodDeclaration);
+          expression.thisOrAncestorOfType<MethodDeclaration>();
       if (containingMethod != null) {
         SimpleIdentifier id = containingMethod.name;
         if (id != null) {
@@ -241,6 +241,17 @@
   }
 
   @override
+  void declaredGenericTypeAlias(GenericTypeAlias declaration) {
+    if (declaration.name.name == targetName) {
+      TypeAnnotation typeName = declaration.functionType.returnType;
+      if (typeName != null) {
+        typeFound = typeName.type;
+      }
+      finished();
+    }
+  }
+
+  @override
   void declaredLabel(Label label, bool isCaseLabel) {
     if (label.label.name == targetName) {
       // no type
diff --git a/pkg/analyzer_plugin/lib/utilities/fixes/fixes.dart b/pkg/analyzer_plugin/lib/utilities/fixes/fixes.dart
index 3b0ab66..377fe37 100644
--- a/pkg/analyzer_plugin/lib/utilities/fixes/fixes.dart
+++ b/pkg/analyzer_plugin/lib/utilities/fixes/fixes.dart
@@ -20,7 +20,7 @@
   /**
    * The analysis result for the file in which the fixes are being requested.
    */
-  ResolveResult get result;
+  ResolvedUnitResult get result;
 }
 
 /**
@@ -147,11 +147,6 @@
   final String appliedTogetherMessage;
 
   /**
-   * The change can be made with other fixes of this [FixKind].
-   */
-  bool canBeAppliedTogether() => appliedTogetherMessage != null;
-
-  /**
    * Initialize a newly created kind of fix to have the given [name],
    * [priority], [message], and optionally [canBeAppliedTogether] and
    * [appliedTogetherMessage].
@@ -160,11 +155,16 @@
       {this.appliedTogetherMessage: null});
 
   @override
-  String toString() => name;
+  int get hashCode => name.hashCode;
 
   @override
   bool operator ==(o) => o is FixKind && o.name == name;
 
+  /**
+   * The change can be made with other fixes of this [FixKind].
+   */
+  bool canBeAppliedTogether() => appliedTogetherMessage != null;
+
   @override
-  int get hashCode => name.hashCode;
+  String toString() => name;
 }
diff --git a/pkg/analyzer_plugin/lib/utilities/folding/folding.dart b/pkg/analyzer_plugin/lib/utilities/folding/folding.dart
index 7eab6ad..6408d2f 100644
--- a/pkg/analyzer_plugin/lib/utilities/folding/folding.dart
+++ b/pkg/analyzer_plugin/lib/utilities/folding/folding.dart
@@ -23,7 +23,7 @@
    * The analysis result for the file for which the folding regions are being
    * requested.
    */
-  ResolveResult get result;
+  ResolvedUnitResult get result;
 }
 
 /**
diff --git a/pkg/analyzer_plugin/lib/utilities/highlights/highlights.dart b/pkg/analyzer_plugin/lib/utilities/highlights/highlights.dart
index 59acbe4..f24b280 100644
--- a/pkg/analyzer_plugin/lib/utilities/highlights/highlights.dart
+++ b/pkg/analyzer_plugin/lib/utilities/highlights/highlights.dart
@@ -22,7 +22,7 @@
    * The analysis result for the file for which the highlight regions are being
    * requested.
    */
-  ResolveResult get result;
+  ResolvedUnitResult get result;
 }
 
 /**
diff --git a/pkg/analyzer_plugin/lib/utilities/kythe/entries.dart b/pkg/analyzer_plugin/lib/utilities/kythe/entries.dart
index b89cab9..11b42d1 100644
--- a/pkg/analyzer_plugin/lib/utilities/kythe/entries.dart
+++ b/pkg/analyzer_plugin/lib/utilities/kythe/entries.dart
@@ -20,7 +20,7 @@
   /**
    * The analysis result for the file in which the entries are being requested.
    */
-  ResolveResult get result;
+  ResolvedUnitResult get result;
 }
 
 /**
diff --git a/pkg/analyzer_plugin/lib/utilities/navigation/navigation.dart b/pkg/analyzer_plugin/lib/utilities/navigation/navigation.dart
index d3233bc..3bc3471 100644
--- a/pkg/analyzer_plugin/lib/utilities/navigation/navigation.dart
+++ b/pkg/analyzer_plugin/lib/utilities/navigation/navigation.dart
@@ -23,7 +23,7 @@
    * The analysis result for the file in which the navigation regions are being
    * requested.
    */
-  ResolveResult get result;
+  ResolvedUnitResult get result;
 }
 
 /**
diff --git a/pkg/analyzer_plugin/lib/utilities/occurrences/occurrences.dart b/pkg/analyzer_plugin/lib/utilities/occurrences/occurrences.dart
index 820f38e..1fe0c1b 100644
--- a/pkg/analyzer_plugin/lib/utilities/occurrences/occurrences.dart
+++ b/pkg/analyzer_plugin/lib/utilities/occurrences/occurrences.dart
@@ -22,7 +22,7 @@
    * The analysis result for the file for which the occurrences information is
    * being requested.
    */
-  ResolveResult get result;
+  ResolvedUnitResult get result;
 }
 
 /**
diff --git a/pkg/analyzer_plugin/lib/utilities/outline/outline.dart b/pkg/analyzer_plugin/lib/utilities/outline/outline.dart
index f675976..21983f6 100644
--- a/pkg/analyzer_plugin/lib/utilities/outline/outline.dart
+++ b/pkg/analyzer_plugin/lib/utilities/outline/outline.dart
@@ -21,7 +21,7 @@
   /**
    * The analysis result for the file for which the outline is being requested.
    */
-  ResolveResult get result;
+  ResolvedUnitResult get result;
 }
 
 /**
diff --git a/pkg/analyzer_plugin/test/integration/support/integration_tests.dart b/pkg/analyzer_plugin/test/integration/support/integration_tests.dart
index 4a58401..e27ac4c 100644
--- a/pkg/analyzer_plugin/test/integration/support/integration_tests.dart
+++ b/pkg/analyzer_plugin/test/integration/support/integration_tests.dart
@@ -548,10 +548,10 @@
         return;
       }
       outOfTestExpect(message, isMap);
-      Map messageAsMap = message;
+      Map messageAsMap = message as Map;
       if (messageAsMap.containsKey('id')) {
         outOfTestExpect(messageAsMap['id'], isString);
-        String id = message['id'];
+        String id = message['id'] as String;
         Completer completer = _pendingCommands[id];
         if (completer == null) {
           fail('Unexpected response from server: id=$id');
diff --git a/pkg/analyzer_plugin/test/plugin/assist_mixin_test.dart b/pkg/analyzer_plugin/test/plugin/assist_mixin_test.dart
index 51e9802..f3d65c5 100644
--- a/pkg/analyzer_plugin/test/plugin/assist_mixin_test.dart
+++ b/pkg/analyzer_plugin/test/plugin/assist_mixin_test.dart
@@ -5,14 +5,12 @@
 import 'dart:async';
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/plugin/assist_mixin.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:analyzer_plugin/protocol/protocol_generated.dart';
 import 'package:analyzer_plugin/src/utilities/assist/assist.dart';
 import 'package:analyzer_plugin/utilities/assist/assist.dart';
-import 'package:path/src/context.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -23,9 +21,7 @@
 }
 
 @reflectiveTest
-class AssistsMixinTest {
-  MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
-
+class AssistsMixinTest with ResourceProviderMixin {
   String packagePath1;
   String filePath1;
   ContextRoot contextRoot1;
@@ -34,11 +30,9 @@
   _TestServerPlugin plugin;
 
   void setUp() {
-    Context pathContext = resourceProvider.pathContext;
-
-    packagePath1 = resourceProvider.convertPath('/package1');
-    filePath1 = pathContext.join(packagePath1, 'lib', 'test.dart');
-    resourceProvider.newFile(filePath1, '');
+    packagePath1 = convertPath('/package1');
+    filePath1 = join(packagePath1, 'lib', 'test.dart');
+    newFile(filePath1);
     contextRoot1 = new ContextRoot(packagePath1, <String>[]);
 
     channel = new MockChannel();
@@ -90,7 +84,7 @@
   @override
   Future<AssistRequest> getAssistRequest(
       EditGetAssistsParams parameters) async {
-    AnalysisResult result = new MockAnalysisResult();
+    var result = new MockResolvedUnitResult();
     return new DartAssistRequestImpl(
         resourceProvider, parameters.offset, parameters.length, result);
   }
diff --git a/pkg/analyzer_plugin/test/plugin/completion_mixin_test.dart b/pkg/analyzer_plugin/test/plugin/completion_mixin_test.dart
index 0dcc99e..0c51a0a 100644
--- a/pkg/analyzer_plugin/test/plugin/completion_mixin_test.dart
+++ b/pkg/analyzer_plugin/test/plugin/completion_mixin_test.dart
@@ -5,14 +5,12 @@
 import 'dart:async';
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/plugin/completion_mixin.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:analyzer_plugin/protocol/protocol_generated.dart';
 import 'package:analyzer_plugin/src/utilities/completion/completion_core.dart';
 import 'package:analyzer_plugin/utilities/completion/completion_core.dart';
-import 'package:path/src/context.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -23,9 +21,7 @@
 }
 
 @reflectiveTest
-class CompletionMixinTest {
-  MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
-
+class CompletionMixinTest with ResourceProviderMixin {
   String packagePath1;
   String filePath1;
   ContextRoot contextRoot1;
@@ -34,11 +30,9 @@
   _TestServerPlugin plugin;
 
   void setUp() {
-    Context pathContext = resourceProvider.pathContext;
-
-    packagePath1 = resourceProvider.convertPath('/package1');
-    filePath1 = pathContext.join(packagePath1, 'lib', 'test.dart');
-    resourceProvider.newFile(filePath1, 'int foo = bar;');
+    packagePath1 = convertPath('/package1');
+    filePath1 = join(packagePath1, 'lib', 'test.dart');
+    newFile(filePath1, content: 'int foo = bar;');
     contextRoot1 = new ContextRoot(packagePath1, <String>[]);
 
     channel = new MockChannel();
@@ -98,7 +92,7 @@
   @override
   Future<CompletionRequest> getCompletionRequest(
       CompletionGetSuggestionsParams parameters) async {
-    AnalysisResult result = new MockAnalysisResult();
+    var result = new MockResolvedUnitResult();
     return new DartCompletionRequestImpl(
         resourceProvider, parameters.offset, result);
   }
diff --git a/pkg/analyzer_plugin/test/plugin/fix_mixin_test.dart b/pkg/analyzer_plugin/test/plugin/fix_mixin_test.dart
index 1d785dd..decd70d 100644
--- a/pkg/analyzer_plugin/test/plugin/fix_mixin_test.dart
+++ b/pkg/analyzer_plugin/test/plugin/fix_mixin_test.dart
@@ -6,17 +6,15 @@
 
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/error/codes.dart';
 import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/plugin/fix_mixin.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart'
     hide AnalysisError;
 import 'package:analyzer_plugin/protocol/protocol_generated.dart';
 import 'package:analyzer_plugin/src/utilities/fixes/fixes.dart';
 import 'package:analyzer_plugin/utilities/fixes/fixes.dart';
-import 'package:path/src/context.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -27,9 +25,7 @@
 }
 
 @reflectiveTest
-class FixesMixinTest {
-  MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
-
+class FixesMixinTest with ResourceProviderMixin {
   String packagePath1;
   String filePath1;
   ContextRoot contextRoot1;
@@ -38,11 +34,9 @@
   _TestServerPlugin plugin;
 
   void setUp() {
-    Context pathContext = resourceProvider.pathContext;
-
-    packagePath1 = resourceProvider.convertPath('/package1');
-    filePath1 = pathContext.join(packagePath1, 'lib', 'test.dart');
-    resourceProvider.newFile(filePath1, '');
+    packagePath1 = convertPath('/package1');
+    filePath1 = join(packagePath1, 'lib', 'test.dart');
+    newFile(filePath1);
     contextRoot1 = new ContextRoot(packagePath1, <String>[]);
 
     channel = new MockChannel();
@@ -98,7 +92,7 @@
     int offset = parameters.offset;
     AnalysisError error = new AnalysisError(
         new MockSource(), 0, 0, CompileTimeErrorCode.AWAIT_IN_WRONG_CONTEXT);
-    AnalysisResult result = new MockAnalysisResult(
+    var result = new MockResolvedUnitResult(
         lineInfo: new LineInfo([0, 20]), errors: [error]);
     return new DartFixesRequestImpl(resourceProvider, offset, [error], result);
   }
diff --git a/pkg/analyzer_plugin/test/plugin/folding_mixin_test.dart b/pkg/analyzer_plugin/test/plugin/folding_mixin_test.dart
index 5123b40..0b429bc 100644
--- a/pkg/analyzer_plugin/test/plugin/folding_mixin_test.dart
+++ b/pkg/analyzer_plugin/test/plugin/folding_mixin_test.dart
@@ -5,15 +5,13 @@
 import 'dart:async';
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/plugin/folding_mixin.dart';
 import 'package:analyzer_plugin/protocol/protocol.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:analyzer_plugin/protocol/protocol_generated.dart';
 import 'package:analyzer_plugin/src/utilities/folding/folding.dart';
 import 'package:analyzer_plugin/utilities/folding/folding.dart';
-import 'package:path/src/context.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -24,9 +22,7 @@
 }
 
 @reflectiveTest
-class FoldingMixinTest {
-  MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
-
+class FoldingMixinTest with ResourceProviderMixin {
   String packagePath1;
   String filePath1;
   ContextRoot contextRoot1;
@@ -35,11 +31,9 @@
   _TestServerPlugin plugin;
 
   void setUp() {
-    Context pathContext = resourceProvider.pathContext;
-
-    packagePath1 = resourceProvider.convertPath('/package1');
-    filePath1 = pathContext.join(packagePath1, 'lib', 'test.dart');
-    resourceProvider.newFile(filePath1, '');
+    packagePath1 = convertPath('/package1');
+    filePath1 = join(packagePath1, 'lib', 'test.dart');
+    newFile(filePath1);
     contextRoot1 = new ContextRoot(packagePath1, <String>[]);
 
     channel = new MockChannel();
@@ -93,7 +87,7 @@
 
   @override
   Future<FoldingRequest> getFoldingRequest(String path) async {
-    AnalysisResult result = new MockAnalysisResult(path: path);
+    var result = new MockResolvedUnitResult(path: path);
     return new DartFoldingRequestImpl(resourceProvider, result);
   }
 }
diff --git a/pkg/analyzer_plugin/test/plugin/highlights_mixin_test.dart b/pkg/analyzer_plugin/test/plugin/highlights_mixin_test.dart
index c0b4543..ced8227 100644
--- a/pkg/analyzer_plugin/test/plugin/highlights_mixin_test.dart
+++ b/pkg/analyzer_plugin/test/plugin/highlights_mixin_test.dart
@@ -5,15 +5,13 @@
 import 'dart:async';
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/plugin/highlights_mixin.dart';
 import 'package:analyzer_plugin/protocol/protocol.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:analyzer_plugin/protocol/protocol_generated.dart';
 import 'package:analyzer_plugin/src/utilities/highlights/highlights.dart';
 import 'package:analyzer_plugin/utilities/highlights/highlights.dart';
-import 'package:path/src/context.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -24,9 +22,7 @@
 }
 
 @reflectiveTest
-class HighlightsMixinTest {
-  MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
-
+class HighlightsMixinTest with ResourceProviderMixin {
   String packagePath1;
   String filePath1;
   ContextRoot contextRoot1;
@@ -35,11 +31,9 @@
   _TestServerPlugin plugin;
 
   void setUp() {
-    Context pathContext = resourceProvider.pathContext;
-
-    packagePath1 = resourceProvider.convertPath('/package1');
-    filePath1 = pathContext.join(packagePath1, 'lib', 'test.dart');
-    resourceProvider.newFile(filePath1, '');
+    packagePath1 = convertPath('/package1');
+    filePath1 = join(packagePath1, 'lib', 'test.dart');
+    newFile(filePath1);
     contextRoot1 = new ContextRoot(packagePath1, <String>[]);
 
     channel = new MockChannel();
@@ -93,7 +87,7 @@
 
   @override
   Future<HighlightsRequest> getHighlightsRequest(String path) async {
-    AnalysisResult result = new MockAnalysisResult(path: path);
+    var result = new MockResolvedUnitResult(path: path);
     return new DartHighlightsRequestImpl(resourceProvider, result);
   }
 }
diff --git a/pkg/analyzer_plugin/test/plugin/kythe_mixin_test.dart b/pkg/analyzer_plugin/test/plugin/kythe_mixin_test.dart
index 0ce5e0a..63f0f63 100644
--- a/pkg/analyzer_plugin/test/plugin/kythe_mixin_test.dart
+++ b/pkg/analyzer_plugin/test/plugin/kythe_mixin_test.dart
@@ -5,14 +5,12 @@
 import 'dart:async';
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/plugin/kythe_mixin.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:analyzer_plugin/protocol/protocol_generated.dart';
 import 'package:analyzer_plugin/src/utilities/kythe/entries.dart';
 import 'package:analyzer_plugin/utilities/kythe/entries.dart';
-import 'package:path/src/context.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -23,9 +21,7 @@
 }
 
 @reflectiveTest
-class KytheMixinTest {
-  MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
-
+class KytheMixinTest with ResourceProviderMixin {
   String packagePath1;
   String filePath1;
   ContextRoot contextRoot1;
@@ -34,11 +30,9 @@
   _TestServerPlugin plugin;
 
   void setUp() {
-    Context pathContext = resourceProvider.pathContext;
-
-    packagePath1 = resourceProvider.convertPath('/package1');
-    filePath1 = pathContext.join(packagePath1, 'lib', 'test.dart');
-    resourceProvider.newFile(filePath1, '');
+    packagePath1 = convertPath('/package1');
+    filePath1 = join(packagePath1, 'lib', 'test.dart');
+    newFile(filePath1);
     contextRoot1 = new ContextRoot(packagePath1, <String>[]);
 
     channel = new MockChannel();
@@ -94,7 +88,7 @@
   @override
   Future<EntryRequest> getEntryRequest(
       KytheGetKytheEntriesParams parameters) async {
-    AnalysisResult result = new MockAnalysisResult();
+    var result = new MockResolvedUnitResult();
     return new DartEntryRequestImpl(resourceProvider, result);
   }
 }
diff --git a/pkg/analyzer_plugin/test/plugin/mocks.dart b/pkg/analyzer_plugin/test/plugin/mocks.dart
index 3e7d651..79bb3bb 100644
--- a/pkg/analyzer_plugin/test/plugin/mocks.dart
+++ b/pkg/analyzer_plugin/test/plugin/mocks.dart
@@ -5,6 +5,7 @@
 import 'dart:async';
 import 'dart:collection';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
@@ -56,22 +57,6 @@
   Future<Null> performWork() => new Future.value(null);
 }
 
-class MockAnalysisResult implements AnalysisResult {
-  @override
-  final List<AnalysisError> errors;
-
-  @override
-  final LineInfo lineInfo;
-
-  @override
-  final String path;
-
-  MockAnalysisResult({this.errors, this.lineInfo, this.path});
-
-  @override
-  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
-}
-
 class MockChannel implements PluginCommunicationChannel {
   bool _closed = false;
 
@@ -143,6 +128,22 @@
   }
 }
 
+class MockResolvedUnitResult implements ResolvedUnitResult {
+  @override
+  final List<AnalysisError> errors;
+
+  @override
+  final LineInfo lineInfo;
+
+  @override
+  final String path;
+
+  MockResolvedUnitResult({this.errors, this.lineInfo, this.path});
+
+  @override
+  noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
+}
+
 class MockResourceProvider implements ResourceProvider {
   @override
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
diff --git a/pkg/analyzer_plugin/test/plugin/navigation_mixin_test.dart b/pkg/analyzer_plugin/test/plugin/navigation_mixin_test.dart
index 7996888..f4f2ffa 100644
--- a/pkg/analyzer_plugin/test/plugin/navigation_mixin_test.dart
+++ b/pkg/analyzer_plugin/test/plugin/navigation_mixin_test.dart
@@ -5,15 +5,13 @@
 import 'dart:async';
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/plugin/navigation_mixin.dart';
 import 'package:analyzer_plugin/protocol/protocol.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:analyzer_plugin/protocol/protocol_generated.dart';
 import 'package:analyzer_plugin/src/utilities/navigation/navigation.dart';
 import 'package:analyzer_plugin/utilities/navigation/navigation.dart';
-import 'package:path/src/context.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -24,9 +22,7 @@
 }
 
 @reflectiveTest
-class NavigationMixinTest {
-  MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
-
+class NavigationMixinTest with ResourceProviderMixin {
   String packagePath1;
   String filePath1;
   ContextRoot contextRoot1;
@@ -35,11 +31,9 @@
   _TestServerPlugin plugin;
 
   void setUp() {
-    Context pathContext = resourceProvider.pathContext;
-
-    packagePath1 = resourceProvider.convertPath('/package1');
-    filePath1 = pathContext.join(packagePath1, 'lib', 'test.dart');
-    resourceProvider.newFile(filePath1, '');
+    packagePath1 = convertPath('/package1');
+    filePath1 = join(packagePath1, 'lib', 'test.dart');
+    newFile(filePath1);
     contextRoot1 = new ContextRoot(packagePath1, <String>[]);
 
     channel = new MockChannel();
@@ -109,7 +103,7 @@
   @override
   Future<NavigationRequest> getNavigationRequest(
       AnalysisGetNavigationParams parameters) async {
-    AnalysisResult result = new MockAnalysisResult(path: parameters.file);
+    var result = new MockResolvedUnitResult(path: parameters.file);
     return new DartNavigationRequestImpl(
         resourceProvider, parameters.offset, parameters.length, result);
   }
diff --git a/pkg/analyzer_plugin/test/plugin/occurrences_mixin_test.dart b/pkg/analyzer_plugin/test/plugin/occurrences_mixin_test.dart
index 6555427..cf2b96f 100644
--- a/pkg/analyzer_plugin/test/plugin/occurrences_mixin_test.dart
+++ b/pkg/analyzer_plugin/test/plugin/occurrences_mixin_test.dart
@@ -5,15 +5,13 @@
 import 'dart:async';
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/plugin/occurrences_mixin.dart';
 import 'package:analyzer_plugin/protocol/protocol.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:analyzer_plugin/protocol/protocol_generated.dart';
 import 'package:analyzer_plugin/src/utilities/occurrences/occurrences.dart';
 import 'package:analyzer_plugin/utilities/occurrences/occurrences.dart';
-import 'package:path/src/context.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -24,9 +22,7 @@
 }
 
 @reflectiveTest
-class OccurrencesMixinTest {
-  MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
-
+class OccurrencesMixinTest with ResourceProviderMixin {
   String packagePath1;
   String filePath1;
   ContextRoot contextRoot1;
@@ -35,11 +31,9 @@
   _TestServerPlugin plugin;
 
   void setUp() {
-    Context pathContext = resourceProvider.pathContext;
-
-    packagePath1 = resourceProvider.convertPath('/package1');
-    filePath1 = pathContext.join(packagePath1, 'lib', 'test.dart');
-    resourceProvider.newFile(filePath1, '');
+    packagePath1 = convertPath('/package1');
+    filePath1 = join(packagePath1, 'lib', 'test.dart');
+    newFile(filePath1);
     contextRoot1 = new ContextRoot(packagePath1, <String>[]);
 
     channel = new MockChannel();
@@ -120,7 +114,7 @@
 
   @override
   Future<OccurrencesRequest> getOccurrencesRequest(String path) async {
-    AnalysisResult result = new MockAnalysisResult(path: path);
+    var result = new MockResolvedUnitResult(path: path);
     return new DartOccurrencesRequestImpl(resourceProvider, result);
   }
 }
diff --git a/pkg/analyzer_plugin/test/plugin/outline_mixin_test.dart b/pkg/analyzer_plugin/test/plugin/outline_mixin_test.dart
index 2ac58ad..cd15cfa 100644
--- a/pkg/analyzer_plugin/test/plugin/outline_mixin_test.dart
+++ b/pkg/analyzer_plugin/test/plugin/outline_mixin_test.dart
@@ -5,15 +5,13 @@
 import 'dart:async';
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/plugin/outline_mixin.dart';
 import 'package:analyzer_plugin/protocol/protocol.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:analyzer_plugin/protocol/protocol_generated.dart';
 import 'package:analyzer_plugin/src/utilities/outline/outline.dart';
 import 'package:analyzer_plugin/utilities/outline/outline.dart';
-import 'package:path/src/context.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -24,9 +22,7 @@
 }
 
 @reflectiveTest
-class OutlineMixinTest {
-  MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
-
+class OutlineMixinTest with ResourceProviderMixin {
   String packagePath1;
   String filePath1;
   ContextRoot contextRoot1;
@@ -35,11 +31,9 @@
   _TestServerPlugin plugin;
 
   void setUp() {
-    Context pathContext = resourceProvider.pathContext;
-
-    packagePath1 = resourceProvider.convertPath('/package1');
-    filePath1 = pathContext.join(packagePath1, 'lib', 'test.dart');
-    resourceProvider.newFile(filePath1, '');
+    packagePath1 = convertPath('/package1');
+    filePath1 = join(packagePath1, 'lib', 'test.dart');
+    newFile(filePath1);
     contextRoot1 = new ContextRoot(packagePath1, <String>[]);
 
     channel = new MockChannel();
@@ -94,7 +88,7 @@
 
   @override
   Future<OutlineRequest> getOutlineRequest(String path) async {
-    AnalysisResult result = new MockAnalysisResult(path: path);
+    var result = new MockResolvedUnitResult(path: path);
     return new DartOutlineRequestImpl(resourceProvider, result);
   }
 }
diff --git a/pkg/analyzer_plugin/test/plugin/plugin_test.dart b/pkg/analyzer_plugin/test/plugin/plugin_test.dart
index 0356e77..118f33e 100644
--- a/pkg/analyzer_plugin/test/plugin/plugin_test.dart
+++ b/pkg/analyzer_plugin/test/plugin/plugin_test.dart
@@ -5,12 +5,11 @@
 import 'dart:async';
 
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/protocol/protocol.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:analyzer_plugin/protocol/protocol_generated.dart';
-import 'package:path/src/context.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
@@ -21,9 +20,7 @@
 }
 
 @reflectiveTest
-class ServerPluginTest {
-  MemoryResourceProvider resourceProvider = new MemoryResourceProvider();
-
+class ServerPluginTest with ResourceProviderMixin {
   MockChannel channel;
   _TestServerPlugin plugin;
 
@@ -36,16 +33,14 @@
   ContextRoot contextRoot2;
 
   void setUp() {
-    Context pathContext = resourceProvider.pathContext;
-
-    packagePath1 = resourceProvider.convertPath('/package1');
-    filePath1 = pathContext.join(packagePath1, 'lib', 'test.dart');
-    resourceProvider.newFile(filePath1, '');
+    packagePath1 = convertPath('/package1');
+    filePath1 = join(packagePath1, 'lib', 'test.dart');
+    newFile(filePath1);
     contextRoot1 = new ContextRoot(packagePath1, <String>[]);
 
-    packagePath2 = resourceProvider.convertPath('/package2');
-    filePath2 = pathContext.join(packagePath2, 'lib', 'test.dart');
-    resourceProvider.newFile(filePath2, '');
+    packagePath2 = convertPath('/package2');
+    filePath2 = join(packagePath2, 'lib', 'test.dart');
+    newFile(filePath2);
     contextRoot2 = new ContextRoot(packagePath2, <String>[]);
 
     channel = new MockChannel();
diff --git a/pkg/analyzer_plugin/test/src/utilities/change_builder/change_builder_dart_test.dart b/pkg/analyzer_plugin/test/src/utilities/change_builder/change_builder_dart_test.dart
index 0f8e505..34ec98d 100644
--- a/pkg/analyzer_plugin/test/src/utilities/change_builder/change_builder_dart_test.dart
+++ b/pkg/analyzer_plugin/test/src/utilities/change_builder/change_builder_dart_test.dart
@@ -4,14 +4,12 @@
 
 import 'dart:async';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
-import 'package:analyzer/src/context/source.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/element/inheritance_manager2.dart';
-import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/testing/test_type_provider.dart';
@@ -33,7 +31,7 @@
   });
 }
 
-abstract class BuilderTestMixin {
+mixin BuilderTestMixin implements AbstractContextTest {
   SourceEdit getEdit(DartChangeBuilder builder) {
     SourceChange sourceChange = builder.sourceChange;
     expect(sourceChange, isNotNull);
@@ -55,14 +53,19 @@
     expect(fileEdit, isNotNull);
     return fileEdit.edits;
   }
+
+  /// Return a newly created Dart change builder.
+  DartChangeBuilderImpl newBuilder() =>
+      new DartChangeBuilder(session) as DartChangeBuilderImpl;
 }
 
 @reflectiveTest
-class DartChangeBuilderImplTest extends AbstractContextTest {
+class DartChangeBuilderImplTest extends AbstractContextTest
+    with BuilderTestMixin {
   test_createFileEditBuilder() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'library test;');
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     DartFileEditBuilderImpl fileEditBuilder =
         await builder.createFileEditBuilder(path);
     expect(fileEditBuilder, const TypeMatcher<DartFileEditBuilder>());
@@ -387,11 +390,11 @@
   }
 
   test_writeClassDeclaration_interfaces() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'class A {}');
     DartType typeA = await _getType(path, 'A');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -404,10 +407,10 @@
   }
 
   test_writeClassDeclaration_isAbstract() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, '');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -419,10 +422,10 @@
   }
 
   test_writeClassDeclaration_memberWriter() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, '');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder).writeClassDeclaration('C',
@@ -436,11 +439,11 @@
   }
 
   test_writeClassDeclaration_mixins_noSuperclass() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'class A {}');
     DartType typeA = await _getType(path, 'A');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -453,12 +456,12 @@
   }
 
   test_writeClassDeclaration_mixins_superclass() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'class A {} class B {}');
     DartType typeA = await _getType(path, 'A');
     DartType typeB = await _getType(path, 'B');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -471,10 +474,10 @@
   }
 
   test_writeClassDeclaration_nameGroupName() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, '');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -493,11 +496,11 @@
   }
 
   test_writeClassDeclaration_superclass() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'class B {}');
     DartType typeB = await _getType(path, 'B');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder).writeClassDeclaration('C',
@@ -516,10 +519,10 @@
   }
 
   test_writeConstructorDeclaration_bodyWriter() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'class C {}');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (DartFileEditBuilder builder) {
       builder.addInsertion(9, (DartEditBuilder builder) {
         builder.writeConstructorDeclaration('A', bodyWriter: () {
@@ -532,7 +535,7 @@
   }
 
   test_writeConstructorDeclaration_fieldNames() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, r'''
 class C {
   final int a;
@@ -540,7 +543,7 @@
 }
 ''');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (DartFileEditBuilder builder) {
       builder.addInsertion(42, (DartEditBuilder builder) {
         builder.writeConstructorDeclaration('A', fieldNames: ['a', 'bb']);
@@ -551,10 +554,10 @@
   }
 
   test_writeConstructorDeclaration_initializerWriter() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'class C {}');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (DartFileEditBuilder builder) {
       builder.addInsertion(9, (DartEditBuilder builder) {
         builder.writeConstructorDeclaration('A', initializerWriter: () {
@@ -567,10 +570,10 @@
   }
 
   test_writeConstructorDeclaration_parameterWriter() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'class C {}');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (DartFileEditBuilder builder) {
       builder.addInsertion(9, (DartEditBuilder builder) {
         builder.writeConstructorDeclaration('A', parameterWriter: () {
@@ -583,11 +586,11 @@
   }
 
   test_writeFieldDeclaration_initializerWriter() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeFieldDeclaration('f',
@@ -601,11 +604,11 @@
   }
 
   test_writeFieldDeclaration_isConst() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeFieldDeclaration('f', isConst: true);
@@ -616,11 +619,11 @@
   }
 
   test_writeFieldDeclaration_isConst_isFinal() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -632,12 +635,12 @@
   }
 
   test_writeFieldDeclaration_isConst_type() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
     DartType typeA = await _getType(path, 'A');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -649,11 +652,11 @@
   }
 
   test_writeFieldDeclaration_isFinal() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeFieldDeclaration('f', isFinal: true);
@@ -664,12 +667,12 @@
   }
 
   test_writeFieldDeclaration_isFinal_type() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
     DartType typeA = await _getType(path, 'A');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -681,11 +684,11 @@
   }
 
   test_writeFieldDeclaration_isStatic() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeFieldDeclaration('f', isStatic: true);
@@ -696,11 +699,11 @@
   }
 
   test_writeFieldDeclaration_nameGroupName() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -721,12 +724,12 @@
   }
 
   test_writeFieldDeclaration_type_typeGroupName() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {} class B {}';
     addSource(path, content);
     DartType typeA = await _getType(path, 'A');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -747,11 +750,11 @@
   }
 
   test_writeFunctionDeclaration_noReturnType_noParams_body() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder).writeFunctionDeclaration('fib',
@@ -765,11 +768,11 @@
   }
 
   test_writeFunctionDeclaration_noReturnType_noParams_noBody() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -788,11 +791,11 @@
   }
 
   test_writeFunctionDeclaration_noReturnType_params_noBody() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder).writeFunctionDeclaration('fib',
@@ -806,13 +809,13 @@
   }
 
   test_writeFunctionDeclaration_returnType_noParams_noBody() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
     DartType typeA = await _getType(path, 'A');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder).writeFunctionDeclaration('fib',
@@ -831,11 +834,11 @@
   }
 
   test_writeGetterDeclaration_bodyWriter() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeGetterDeclaration('g',
@@ -849,11 +852,11 @@
   }
 
   test_writeGetterDeclaration_isStatic() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -865,11 +868,11 @@
   }
 
   test_writeGetterDeclaration_nameGroupName() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -890,12 +893,12 @@
   }
 
   test_writeGetterDeclaration_returnType() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {} class B {}';
     addSource(path, content);
     DartType typeA = await _getType(path, 'A');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeGetterDeclaration('g',
@@ -916,7 +919,7 @@
   }
 
   test_writeLocalVariableDeclaration_noType_initializer() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '''
 void f() {
 
@@ -924,7 +927,7 @@
     addSource(path, content);
     await driver.getResult(path);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(11, (EditBuilder builder) {
         (builder as DartEditBuilder).writeLocalVariableDeclaration('foo',
@@ -938,7 +941,7 @@
   }
 
   test_writeLocalVariableDeclaration_noType_noInitializer() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '''
 void f() {
 
@@ -946,7 +949,7 @@
     addSource(path, content);
     await driver.getResult(path);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(11, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -965,7 +968,7 @@
   }
 
   test_writeLocalVariableDeclaration_noType_noInitializer_const() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '''
 void f() {
 
@@ -973,7 +976,7 @@
     addSource(path, content);
     await driver.getResult(path);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(11, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -985,7 +988,7 @@
   }
 
   test_writeLocalVariableDeclaration_noType_noInitializer_final() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '''
 void f() {
 
@@ -993,7 +996,7 @@
     addSource(path, content);
     await driver.getResult(path);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(11, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -1005,7 +1008,7 @@
   }
 
   test_writeLocalVariableDeclaration_type_initializer() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '''
 void f() {
 
@@ -1014,9 +1017,9 @@
     addSource(path, content);
     CompilationUnit unit = (await driver.getResult(path))?.unit;
 
-    ClassDeclaration A = unit.declarations[1];
+    ClassDeclaration A = unit.declarations[1] as ClassDeclaration;
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(11, (EditBuilder builder) {
         (builder as DartEditBuilder).writeLocalVariableDeclaration('foo',
@@ -1030,7 +1033,7 @@
   }
 
   test_writeLocalVariableDeclaration_type_noInitializer() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '''
 void f() {
 
@@ -1039,9 +1042,9 @@
     addSource(path, content);
     CompilationUnit unit = (await driver.getResult(path))?.unit;
 
-    ClassDeclaration A = unit.declarations[1];
+    ClassDeclaration A = unit.declarations[1] as ClassDeclaration;
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(11, (EditBuilder builder) {
         (builder as DartEditBuilder).writeLocalVariableDeclaration('foo',
@@ -1060,7 +1063,7 @@
   }
 
   test_writeLocalVariableDeclaration_type_noInitializer_final() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '''
 void f() {
 
@@ -1069,9 +1072,9 @@
     addSource(path, content);
     CompilationUnit unit = (await driver.getResult(path))?.unit;
 
-    ClassDeclaration A = unit.declarations[1];
+    ClassDeclaration A = unit.declarations[1] as ClassDeclaration;
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(11, (EditBuilder builder) {
         (builder as DartEditBuilder).writeLocalVariableDeclaration('foo',
@@ -1090,11 +1093,11 @@
   }
 
   test_writeMixinDeclaration_interfaces() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'class A {}');
     DartType typeA = await _getType(path, 'A');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -1107,12 +1110,12 @@
   }
 
   test_writeMixinDeclaration_interfacesAndSuperclassConstraints() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'class A {} class B {}');
     DartType typeA = await _getType(path, 'A');
     DartType typeB = await _getType(path, 'B');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder).writeMixinDeclaration('M',
@@ -1125,10 +1128,10 @@
   }
 
   test_writeMixinDeclaration_memberWriter() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, '');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder).writeMixinDeclaration('M',
@@ -1142,10 +1145,10 @@
   }
 
   test_writeMixinDeclaration_nameGroupName() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, '');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -1164,11 +1167,11 @@
   }
 
   test_writeMixinDeclaration_superclassConstraints() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'class A {}');
     DartType typeA = await _getType(path, 'A');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(0, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -1529,6 +1532,27 @@
     );
   }
 
+  test_writeOverride_method_returnVoid_abstract() async {
+    await _assertWriteOverride(
+      content: '''
+abstract class A {
+  void test();
+}
+class B extends A {
+}
+''',
+      nameToOverride: 'test',
+      expected: '''
+  @override
+  void test() {
+    // TODO: implement test
+  }
+''',
+      displayText: 'test() { … }',
+      selection: new SourceRange(109, 0),
+    );
+  }
+
   test_writeOverride_method_voidAsTypeArgument_abstract() async {
     await _assertWriteOverride(
       content: '''
@@ -1590,6 +1614,7 @@
   }
 ''',
       displayText: 'value(int value) { … }',
+      selection: new SourceRange(133, 0),
     );
   }
 
@@ -1616,11 +1641,11 @@
   }
 
   test_writeParameter() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeParameter('a');
@@ -1631,12 +1656,12 @@
   }
 
   test_writeParameter_type() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
     DartType typeA = await _getType(path, 'A');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeParameter('a', type: typeA);
@@ -1647,7 +1672,7 @@
   }
 
   test_writeParameterMatchingArgument() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = r'''
 f() {}
 g() {
@@ -1657,13 +1682,14 @@
 ''';
     addSource(path, content);
     CompilationUnit unit = (await driver.getResult(path))?.unit;
-    FunctionDeclaration g = unit.declarations[1];
-    BlockFunctionBody body = g.functionExpression.body;
-    ExpressionStatement statement = body.block.statements[0];
-    MethodInvocation invocation = statement.expression;
+    FunctionDeclaration g = unit.declarations[1] as FunctionDeclaration;
+    BlockFunctionBody body = g.functionExpression.body as BlockFunctionBody;
+    ExpressionStatement statement =
+        body.block.statements[0] as ExpressionStatement;
+    MethodInvocation invocation = statement.expression as MethodInvocation;
     Expression argument = invocation.argumentList.arguments[0];
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(2, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -1675,17 +1701,17 @@
   }
 
   test_writeParameters_named() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'f(int a, {bool b = false, String c}) {}';
     addSource(path, content);
 
     CompilationUnit unit = (await driver.getResult(path))?.unit;
-    FunctionDeclaration f = unit.declarations[0];
+    FunctionDeclaration f = unit.declarations[0] as FunctionDeclaration;
     FormalParameterList parameters = f.functionExpression.parameters;
     Iterable<ParameterElement> elements = parameters.parameters
         .map(resolutionMap.elementDeclaredByFormalParameter);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeParameters(elements);
@@ -1697,16 +1723,16 @@
   }
 
   test_writeParameters_positional() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'f(int a, [bool b = false, String c]) {}';
     addSource(path, content);
     CompilationUnit unit = (await driver.getResult(path))?.unit;
-    FunctionDeclaration f = unit.declarations[0];
+    FunctionDeclaration f = unit.declarations[0] as FunctionDeclaration;
     FormalParameterList parameters = f.functionExpression.parameters;
     Iterable<ParameterElement> elements = parameters.parameters
         .map(resolutionMap.elementDeclaredByFormalParameter);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeParameters(elements);
@@ -1718,16 +1744,16 @@
   }
 
   test_writeParameters_required() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'f(int i, String s) {}';
     addSource(path, content);
     CompilationUnit unit = (await driver.getResult(path))?.unit;
-    FunctionDeclaration f = unit.declarations[0];
+    FunctionDeclaration f = unit.declarations[0] as FunctionDeclaration;
     FormalParameterList parameters = f.functionExpression.parameters;
     Iterable<ParameterElement> elements = parameters.parameters
         .map(resolutionMap.elementDeclaredByFormalParameter);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeParameters(elements);
@@ -1738,19 +1764,20 @@
   }
 
   test_writeParametersMatchingArguments_named() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '''
 f(int i, String s) {
   g(s, index: i);
 }''';
     addSource(path, content);
     CompilationUnit unit = (await driver.getResult(path))?.unit;
-    FunctionDeclaration f = unit.declarations[0];
-    BlockFunctionBody body = f.functionExpression.body;
-    ExpressionStatement statement = body.block.statements[0];
-    MethodInvocation invocation = statement.expression;
+    FunctionDeclaration f = unit.declarations[0] as FunctionDeclaration;
+    BlockFunctionBody body = f.functionExpression.body as BlockFunctionBody;
+    ExpressionStatement statement =
+        body.block.statements[0] as ExpressionStatement;
+    MethodInvocation invocation = statement.expression as MethodInvocation;
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -1762,19 +1789,20 @@
   }
 
   test_writeParametersMatchingArguments_required() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '''
 f(int i, String s) {
   g(s, i);
 }''';
     addSource(path, content);
     CompilationUnit unit = (await driver.getResult(path))?.unit;
-    FunctionDeclaration f = unit.declarations[0];
-    BlockFunctionBody body = f.functionExpression.body;
-    ExpressionStatement statement = body.block.statements[0];
-    MethodInvocation invocation = statement.expression;
+    FunctionDeclaration f = unit.declarations[0] as FunctionDeclaration;
+    BlockFunctionBody body = f.functionExpression.body as BlockFunctionBody;
+    ExpressionStatement statement =
+        body.block.statements[0] as ExpressionStatement;
+    MethodInvocation invocation = statement.expression as MethodInvocation;
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -1786,14 +1814,14 @@
   }
 
   test_writeReference_method() async {
-    String aPath = provider.convertPath('/a.dart');
+    String aPath = convertPath('/a.dart');
     addSource(aPath, r'''
 class A {
   void foo() {}
 }
 ''');
 
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = r'''
 import 'a.dart';
 ''';
@@ -1802,7 +1830,7 @@
     var aElement = await _getClassElement(aPath, 'A');
     var fooElement = aElement.methods[0];
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (DartFileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (DartEditBuilder builder) {
         builder.writeReference(fooElement);
@@ -1813,10 +1841,10 @@
   }
 
   test_writeReference_topLevel_hasImport_noPrefix() async {
-    String aPath = provider.convertPath('/a.dart');
+    String aPath = convertPath('/a.dart');
     addSource(aPath, 'const a = 42;');
 
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = r'''
 import 'a.dart';
 ''';
@@ -1824,7 +1852,7 @@
 
     var aElement = await _getTopLevelAccessorElement(aPath, 'a');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (DartFileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (DartEditBuilder builder) {
         builder.writeReference(aElement);
@@ -1835,10 +1863,10 @@
   }
 
   test_writeReference_topLevel_hasImport_prefix() async {
-    String aPath = provider.convertPath('/a.dart');
+    String aPath = convertPath('/a.dart');
     addSource(aPath, 'const a = 42;');
 
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = r'''
 import 'a.dart' as p;
 ''';
@@ -1846,7 +1874,7 @@
 
     var aElement = await _getTopLevelAccessorElement(aPath, 'a');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (DartFileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (DartEditBuilder builder) {
         builder.writeReference(aElement);
@@ -1857,16 +1885,16 @@
   }
 
   test_writeReference_topLevel_noImport() async {
-    String aPath = provider.convertPath('/a.dart');
+    String aPath = convertPath('/a.dart');
     addSource(aPath, 'const a = 42;');
 
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '';
     addSource(path, content);
 
     var aElement = await _getTopLevelAccessorElement(aPath, 'a');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (DartFileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (DartEditBuilder builder) {
         builder.writeReference(aElement);
@@ -1879,12 +1907,12 @@
   }
 
   test_writeType_dynamic() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
     CompilationUnit unit = (await driver.getResult(path))?.unit;
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeType(resolutionMap
@@ -1925,13 +1953,13 @@
   }
 
   test_writeType_genericType() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {} class B<E> {}';
     addSource(path, content);
     InterfaceType typeA = await _getType(path, 'A');
     InterfaceType typeB = await _getType(path, 'B');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeType(typeB.instantiate([typeA]));
@@ -1942,12 +1970,12 @@
   }
 
   test_writeType_groupName() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {} class B extends A {} class C extends B {}';
     addSource(path, content);
     DartType typeC = await _getType(path, 'C');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeType(typeC, groupName: 'type');
@@ -1964,12 +1992,12 @@
   }
 
   test_writeType_groupName_addSupertypeProposals() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {} class B extends A {} class C extends B {}';
     addSource(path, content);
     DartType typeC = await _getType(path, 'C');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder)
@@ -1997,14 +2025,14 @@
   }
 
   test_writeType_groupName_invalidType() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A<T> {}';
     addSource(path, content);
 
     InterfaceType typeA = await _getType(path, 'A');
     DartType typeT = typeA.typeParameters.single.type;
 
-    var builder = new DartChangeBuilder(session);
+    var builder = newBuilder();
     await builder.addFileEdit(path, (builder) {
       builder.addInsertion(content.length, (builder) {
         // "T" cannot be written, because we are outside of "A".
@@ -2024,11 +2052,11 @@
   }
 
   test_writeType_null() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeType(null);
@@ -2039,8 +2067,8 @@
   }
 
   test_writeType_prefixGenerator() async {
-    String aPath = provider.convertPath('/a.dart');
-    String bPath = provider.convertPath('/b.dart');
+    String aPath = convertPath('/a.dart');
+    String bPath = convertPath('/b.dart');
 
     addSource(aPath, r'''
 class A1 {}
@@ -2050,7 +2078,7 @@
 class B {}
 ''');
 
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = '';
     addSource(path, content);
 
@@ -2063,7 +2091,7 @@
       return '_prefix${nextPrefixIndex++}';
     }
 
-    var builder = new DartChangeBuilder(session);
+    var builder = newBuilder();
     await builder.addFileEdit(path, (builder) {
       builder.addInsertion(content.length - 1, (builder) {
         builder.writeType(a1.type);
@@ -2089,12 +2117,12 @@
   }
 
   test_writeType_required_dynamic() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
     CompilationUnit unit = (await driver.getResult(path))?.unit;
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeType(
@@ -2111,12 +2139,12 @@
   }
 
   test_writeType_required_notNull() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
     DartType typeA = await _getType(path, 'A');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeType(typeA, required: true);
@@ -2127,11 +2155,11 @@
   }
 
   test_writeType_required_null() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeType(null, required: true);
@@ -2142,12 +2170,12 @@
   }
 
   test_writeType_simpleType() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
     DartType typeA = await _getType(path, 'A');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilder).writeType(typeA);
@@ -2167,11 +2195,11 @@
   }
 
   test_writeTypes_empty() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilderImpl).writeTypes([]);
@@ -2182,13 +2210,13 @@
   }
 
   test_writeTypes_noPrefix() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {} class B {}';
     addSource(path, content);
     DartType typeA = await _getType(path, 'A');
     DartType typeB = await _getType(path, 'B');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilderImpl).writeTypes([typeA, typeB]);
@@ -2199,11 +2227,11 @@
   }
 
   test_writeTypes_null() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {}';
     addSource(path, content);
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilderImpl).writeTypes(null);
@@ -2214,13 +2242,13 @@
   }
 
   test_writeTypes_prefix() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = 'class A {} class B {}';
     addSource(path, content);
     DartType typeA = await _getType(path, 'A');
     DartType typeB = await _getType(path, 'B');
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 1, (EditBuilder builder) {
         (builder as DartEditBuilderImpl)
@@ -2233,9 +2261,9 @@
 
   Future<void> _assertImportLibrary(
       String initialCode, List<String> newUris, String expectedCode) async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, initialCode);
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (DartFileEditBuilder builder) {
       for (String newUri in newUris) {
         builder.importLibrary(Uri.parse(newUri));
@@ -2266,7 +2294,7 @@
     String displayText,
     SourceRange selection,
   }) async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, content);
 
     TypeSystem typeSystem = await session.typeSystem;
@@ -2279,10 +2307,10 @@
     StringBuffer displayBuffer =
         displayText != null ? new StringBuffer() : null;
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       builder.addInsertion(content.length - 2, (EditBuilder builder) {
-        ExecutableElement element = inherited.element;
+        ExecutableElement element = inherited.element as ExecutableElement;
         (builder as DartEditBuilder).writeOverride(
           inherited,
           displayTextBuffer: displayBuffer,
@@ -2299,13 +2327,13 @@
   }
 
   Future<void> _assertWriteType(String typeCode, {String declarations}) async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     String content = (declarations ?? '') + '$typeCode v;';
     addSource(path, content);
 
     var f = await _getTopLevelAccessorElement(path, 'v');
 
-    var builder = new DartChangeBuilder(session);
+    var builder = newBuilder();
     await builder.addFileEdit(path, (builder) {
       builder.addInsertion(content.length - 1, (builder) {
         builder.writeType(f.returnType);
@@ -2336,22 +2364,21 @@
 class DartFileEditBuilderImplTest extends AbstractContextTest
     with BuilderTestMixin {
   TypeProvider get typeProvider {
-    AnalysisContext context = AnalysisEngine.instance.createAnalysisContext();
-    context.sourceFactory = new SourceFactoryImpl([new DartUriResolver(sdk)]);
-    return new TestTypeProvider(context);
+    return new TestTypeProvider(null, driver);
   }
 
   test_convertFunctionFromSyncToAsync_closure() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, '''var f = () {}''');
 
     CompilationUnit unit = (await driver.getResult(path))?.unit;
-    TopLevelVariableDeclaration variable = unit.declarations[0];
+    TopLevelVariableDeclaration variable =
+        unit.declarations[0] as TopLevelVariableDeclaration;
     FunctionBody body =
         (variable.variables.variables[0].initializer as FunctionExpression)
             .body;
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       (builder as DartFileEditBuilder)
           .convertFunctionFromSyncToAsync(body, typeProvider);
@@ -2362,30 +2389,28 @@
   }
 
   test_convertFunctionFromSyncToAsync_topLevelFunction() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'String f() {}');
 
     CompilationUnit unit = (await driver.getResult(path))?.unit;
-    FunctionDeclaration function = unit.declarations[0];
+    FunctionDeclaration function = unit.declarations[0] as FunctionDeclaration;
     FunctionBody body = function.functionExpression.body;
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       (builder as DartFileEditBuilder)
           .convertFunctionFromSyncToAsync(body, typeProvider);
     });
     List<SourceEdit> edits = getEdits(builder);
-    expect(edits, hasLength(3));
+    expect(edits, hasLength(2));
     expect(edits[0].replacement, equalsIgnoringWhitespace('async'));
-    expect(
-        edits[1].replacement, equalsIgnoringWhitespace("import 'dart:async';"));
-    expect(edits[2].replacement, equalsIgnoringWhitespace('Future<String>'));
+    expect(edits[1].replacement, equalsIgnoringWhitespace('Future<String>'));
   }
 
   test_createEditBuilder() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'library test;');
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       int offset = 4;
       int length = 5;
@@ -2400,37 +2425,35 @@
   }
 
   test_replaceTypeWithFuture() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, 'String f() {}');
 
     CompilationUnit unit = (await driver.getResult(path))?.unit;
-    FunctionDeclaration function = unit.declarations[0];
+    FunctionDeclaration function = unit.declarations[0] as FunctionDeclaration;
     TypeAnnotation type = function.returnType;
 
-    DartChangeBuilderImpl builder = new DartChangeBuilder(session);
+    DartChangeBuilderImpl builder = newBuilder();
     await builder.addFileEdit(path, (FileEditBuilder builder) {
       (builder as DartFileEditBuilder)
           .replaceTypeWithFuture(type, typeProvider);
     });
     List<SourceEdit> edits = getEdits(builder);
-    expect(edits, hasLength(2));
-    expect(
-        edits[0].replacement, equalsIgnoringWhitespace("import 'dart:async';"));
-    expect(edits[1].replacement, equalsIgnoringWhitespace('Future<String>'));
+    expect(edits, hasLength(1));
+    expect(edits[0].replacement, equalsIgnoringWhitespace('Future<String>'));
   }
 }
 
 @reflectiveTest
 class DartLinkedEditBuilderImplTest extends AbstractContextTest {
   test_addSuperTypesAsSuggestions() async {
-    String path = provider.convertPath('/test.dart');
+    String path = convertPath('/test.dart');
     addSource(path, '''
 class A {}
 class B extends A {}
 class C extends B {}
 ''');
     CompilationUnit unit = (await driver.getResult(path))?.unit;
-    ClassDeclaration classC = unit.declarations[2];
+    ClassDeclaration classC = unit.declarations[2] as ClassDeclaration;
     DartLinkedEditBuilderImpl builder = new DartLinkedEditBuilderImpl(null);
     builder.addSuperTypesAsSuggestions(classC.declaredElement.type);
     List<LinkedEditSuggestion> suggestions = builder.suggestions;
diff --git a/pkg/analyzer_plugin/test/src/utilities/completion/completion_target_test.dart b/pkg/analyzer_plugin/test/src/utilities/completion/completion_target_test.dart
index 45c0388..241ec1f 100644
--- a/pkg/analyzer_plugin/test/src/utilities/completion/completion_target_test.dart
+++ b/pkg/analyzer_plugin/test/src/utilities/completion/completion_target_test.dart
@@ -4,8 +4,8 @@
 
 import 'dart:async';
 
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer/dart/ast/ast.dart';
-import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/generated/parser.dart' as analyzer;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer_plugin/src/utilities/completion/completion_target.dart';
@@ -36,8 +36,8 @@
     expect(nextOffset, equals(-1), reason: 'too many ^');
     content = content.substring(0, completionOffset) +
         content.substring(completionOffset + 1);
-    testSource = addSource(provider.convertPath('/test.dart'), content);
-    AnalysisResult result = await driver.getResult(testSource.fullName);
+    testSource = addSource('/test.dart', content);
+    ResolvedUnitResult result = await driver.getResult(testSource.fullName);
     target = new CompletionTarget.forOffset(result.unit, completionOffset);
   }
 
@@ -56,7 +56,7 @@
 
     // Assert with parsed unit
     assertCommon();
-    AnalysisResult result = await driver.getResult(testSource.fullName);
+    ResolvedUnitResult result = await driver.getResult(testSource.fullName);
     target = new CompletionTarget.forOffset(result.unit, completionOffset);
     // Assert more with resolved unit
     assertCommon();
diff --git a/pkg/analyzer_plugin/test/src/utilities/completion/optype_test.dart b/pkg/analyzer_plugin/test/src/utilities/completion/optype_test.dart
index f85cb6f..f4c2eb8 100644
--- a/pkg/analyzer_plugin/test/src/utilities/completion/optype_test.dart
+++ b/pkg/analyzer_plugin/test/src/utilities/completion/optype_test.dart
@@ -4,7 +4,7 @@
 
 import 'dart:async';
 
-import 'package:analyzer/src/dart/analysis/driver.dart';
+import 'package:analyzer/dart/analysis/results.dart';
 import 'package:analyzer_plugin/protocol/protocol_common.dart';
 import 'package:analyzer_plugin/src/utilities/completion/completion_target.dart';
 import 'package:analyzer_plugin/src/utilities/completion/optype.dart';
@@ -107,11 +107,7 @@
 
   test_AssertInitializer() async {
     addTestSource('class C { C() : assert(^); }');
-    await assertOpType(
-        constructors: true,
-        returnValue: true,
-        typeNames: true,
-        constructorBody: true);
+    await assertOpType(constructors: true, returnValue: true, typeNames: true);
   }
 
   test_AssignmentExpression_RHS() async {
@@ -427,25 +423,13 @@
         methodBody: true);
   }
 
-  test_Block_keyword() async {
-    addTestSource('class C { static C get instance => null; } main() {C.in^}');
-    await assertOpType(
-        constructors: true,
-        prefixed: true,
-        returnValue: true,
-        typeNames: true,
-        voidReturn: true,
-        functionBody: true);
-  }
-
-  test_Block_static() async {
-    addTestSource('class A {static foo() {^}}');
+  test_Block_in_constructor() async {
+    addTestSource('class A {A() {^}}');
     await assertOpType(
         constructors: true,
         returnValue: true,
         typeNames: true,
-        staticMethodBody: true,
-        methodBody: true,
+        constructorBody: true,
         voidReturn: true);
   }
 
@@ -469,13 +453,25 @@
         voidReturn: true);
   }
 
-  test_Block_in_constructor() async {
-    addTestSource('class A {A() {^}}');
+  test_Block_keyword() async {
+    addTestSource('class C { static C get instance => null; } main() {C.in^}');
+    await assertOpType(
+        constructors: true,
+        prefixed: true,
+        returnValue: true,
+        typeNames: true,
+        voidReturn: true,
+        functionBody: true);
+  }
+
+  test_Block_static() async {
+    addTestSource('class A {static foo() {^}}');
     await assertOpType(
         constructors: true,
         returnValue: true,
         typeNames: true,
-        constructorBody: true,
+        staticMethodBody: true,
+        methodBody: true,
         voidReturn: true);
   }
 
@@ -557,7 +553,6 @@
         returnValue: true,
         typeNames: true,
         voidReturn: true,
-        methodBody: true,
         kind: CompletionSuggestionKind.IDENTIFIER);
   }
 
@@ -611,14 +606,40 @@
         methodBody: true);
   }
 
+  test_ConstructorFieldInitializer_name() async {
+    addTestSource(r'''
+class C {
+  final int foo;
+  
+  C() : ^
+}
+''');
+    await assertOpType();
+  }
+
+  test_ConstructorFieldInitializer_value() async {
+    addTestSource(r'''
+class C {
+  final int foo;
+  
+  C() : foo = ^
+}
+''');
+    await assertOpType(
+      constructors: true,
+      returnValue: true,
+      typeNames: true,
+    );
+  }
+
   test_DefaultFormalParameter_named_expression() async {
     // DefaultFormalParameter FormalParameterList MethodDeclaration
     addTestSource('class A {a(blat: ^) { }}');
     await assertOpType(
-        constructors: true,
-        returnValue: true,
-        typeNames: true,
-        methodBody: true);
+      constructors: true,
+      returnValue: true,
+      typeNames: true,
+    );
   }
 
   test_DoStatement() async {
@@ -698,33 +719,33 @@
     // FormalParameterList MethodDeclaration
     addTestSource('class A {a(b.^ f) { }}');
     await assertOpType(
-        constructors: true,
-        returnValue: true,
-        typeNames: true,
-        prefixed: true,
-        methodBody: true);
+      constructors: true,
+      returnValue: true,
+      typeNames: true,
+      prefixed: true,
+    );
   }
 
   test_FormalParameter_partialType2() async {
     // FormalParameterList MethodDeclaration
     addTestSource('class A {a(b.z^ f) { }}');
     await assertOpType(
-        constructors: true,
-        returnValue: true,
-        typeNames: true,
-        prefixed: true,
-        methodBody: true);
+      constructors: true,
+      returnValue: true,
+      typeNames: true,
+      prefixed: true,
+    );
   }
 
   test_FormalParameter_partialType3() async {
     // FormalParameterList MethodDeclaration
     addTestSource('class A {a(b.^) { }}');
     await assertOpType(
-        constructors: true,
-        returnValue: true,
-        typeNames: true,
-        prefixed: true,
-        methodBody: true);
+      constructors: true,
+      returnValue: true,
+      typeNames: true,
+      prefixed: true,
+    );
   }
 
   test_ForStatement_condition() async {
@@ -1604,7 +1625,7 @@
   test_FormalParameterList() async {
     // FormalParameterList MethodDeclaration
     addTestSource('class A {a(^) { }}');
-    await assertOpType(typeNames: true, methodBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_ForStatement_initializer() async {
@@ -1680,7 +1701,7 @@
     addTestSource('''
       /// some dartdoc ^
       zoo(z) { } String name;''');
-    await assertOpType(functionBody: true);
+    await assertOpType();
   }
 
   test_FunctionDeclaration_inLineDocComment2() async {
@@ -1688,7 +1709,7 @@
     addTestSource('''
       /// some ^dartdoc
       zoo(z) { } String name;''');
-    await assertOpType(functionBody: true);
+    await assertOpType();
   }
 
   test_FunctionDeclaration_inStarComment() async {
@@ -1706,13 +1727,13 @@
   test_FunctionDeclaration_inStarDocComment() async {
     // Comment  FunctionDeclaration  CompilationUnit
     addTestSource('/** ^ */ zoo(z) { } String name; ');
-    await assertOpType(functionBody: true);
+    await assertOpType();
   }
 
   test_FunctionDeclaration_inStarDocComment2() async {
     // Comment  FunctionDeclaration  CompilationUnit
     addTestSource('/**  *^/ zoo(z) { } String name;');
-    await assertOpType(functionBody: true);
+    await assertOpType();
   }
 
   test_FunctionDeclaration_returnType() async {
@@ -1743,7 +1764,7 @@
     addTestSource('''
       /// some dartdoc
       ^ zoo(z) { } String name;''');
-    await assertOpType(typeNames: true, functionBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_FunctionDeclaration_returnType_afterLineDocComment2() async {
@@ -1751,7 +1772,7 @@
     addTestSource('''
 /// some dartdoc
 ^ zoo(z) { } String name;''');
-    await assertOpType(typeNames: true, functionBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_FunctionDeclaration_returnType_afterStarComment() async {
@@ -1769,19 +1790,19 @@
   test_FunctionDeclaration_returnType_afterStarDocComment() async {
     // FunctionDeclaration  CompilationUnit
     addTestSource('/** */ ^ zoo(z) { } String name;');
-    await assertOpType(typeNames: true, functionBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_FunctionDeclaration_returnType_afterStarDocComment2() async {
     // FunctionDeclaration  CompilationUnit
     addTestSource('/** */^ zoo(z) { } String name;');
-    await assertOpType(typeNames: true, functionBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_FunctionExpression() async {
     // BlockFunctionBody  FunctionExpression  FunctionDeclaration
     addTestSource('main()^ { int b = 2; b++; b. }');
-    await assertOpType(functionBody: true);
+    await assertOpType();
   }
 
   test_FunctionExpressionInvocation() async {
@@ -1898,7 +1919,7 @@
       class C2 {
         /// some dartdoc ^
         zoo(z) { } String name; }''');
-    await assertOpType(methodBody: true);
+    await assertOpType();
   }
 
   test_MethodDeclaration_inLineDocComment2() async {
@@ -1907,7 +1928,7 @@
       class C2 {
         /// some ^dartdoc
         zoo(z) { } String name; }''');
-    await assertOpType(methodBody: true);
+    await assertOpType();
   }
 
   test_MethodDeclaration_inStarComment() async {
@@ -1925,13 +1946,13 @@
   test_MethodDeclaration_inStarDocComment() async {
     // Comment  MethodDeclaration  ClassDeclaration  CompilationUnit
     addTestSource('class C2 {/** ^ */ zoo(z) { } String name; }');
-    await assertOpType(methodBody: true);
+    await assertOpType();
   }
 
   test_MethodDeclaration_inStarDocComment2() async {
     // Comment  MethodDeclaration  ClassDeclaration  CompilationUnit
     addTestSource('class C2 {/**  *^/ zoo(z) { } String name; }');
-    await assertOpType(methodBody: true);
+    await assertOpType();
   }
 
   test_MethodDeclaration_returnType() async {
@@ -1965,7 +1986,7 @@
       class C2 {
         /// some dartdoc
         ^ zoo(z) { } String name; }''');
-    await assertOpType(typeNames: true, methodBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_MethodDeclaration_returnType_afterLineDocComment2() async {
@@ -1974,7 +1995,7 @@
 class C2 {
   /// some dartdoc
 ^ zoo(z) { } String name; }''');
-    await assertOpType(typeNames: true, methodBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_MethodDeclaration_returnType_afterStarComment() async {
@@ -1992,13 +2013,13 @@
   test_MethodDeclaration_returnType_afterStarDocComment() async {
     // MethodDeclaration  ClassDeclaration  CompilationUnit
     addTestSource('class C2 {/** */ ^ zoo(z) { } String name; }');
-    await assertOpType(typeNames: true, methodBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_MethodDeclaration_returnType_afterStarDocComment2() async {
     // MethodDeclaration  ClassDeclaration  CompilationUnit
     addTestSource('class C2 {/** */^ zoo(z) { } String name; }');
-    await assertOpType(typeNames: true, methodBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_NamedExpression() async {
@@ -2043,49 +2064,49 @@
   test_SimpleFormalParameter_name1() async {
     // SimpleIdentifier  SimpleFormalParameter  FormalParameterList
     addTestSource('m(String na^) {}');
-    await assertOpType(typeNames: false, functionBody: true);
+    await assertOpType(typeNames: false);
   }
 
   test_SimpleFormalParameter_name2() async {
     // SimpleIdentifier  SimpleFormalParameter  FormalParameterList
     addTestSource('m(int first, String na^) {}');
-    await assertOpType(typeNames: false, functionBody: true);
+    await assertOpType(typeNames: false);
   }
 
   test_SimpleFormalParameter_type_optionalNamed() async {
     // SimpleIdentifier  DefaultFormalParameter  FormalParameterList
     addTestSource('m({Str^}) {}');
-    await assertOpType(typeNames: true, functionBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_SimpleFormalParameter_type_optionalPositional() async {
     // SimpleIdentifier  DefaultFormalParameter  FormalParameterList
     addTestSource('m([Str^]) {}');
-    await assertOpType(typeNames: true, functionBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_SimpleFormalParameter_type_withName() async {
     // SimpleIdentifier  SimpleFormalParameter  FormalParameterList
     addTestSource('m(Str^ name) {}');
-    await assertOpType(typeNames: true, functionBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_SimpleFormalParameter_type_withoutName1() async {
     // SimpleIdentifier  SimpleFormalParameter  FormalParameterList
     addTestSource('m(Str^) {}');
-    await assertOpType(typeNames: true, functionBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_SimpleFormalParameter_type_withoutName2() async {
     // FormalParameterList
     addTestSource('m(^) {}');
-    await assertOpType(typeNames: true, functionBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_SimpleFormalParameter_type_withoutName3() async {
     // SimpleIdentifier  SimpleFormalParameter  FormalParameterList
     addTestSource('m(int first, Str^) {}');
-    await assertOpType(typeNames: true, functionBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_SwitchCase_before() async {
@@ -2112,7 +2133,7 @@
       class A implements I {
         A(this.^) {}
       }''');
-    await assertOpType(prefixed: true, constructorBody: true);
+    await assertOpType(prefixed: true);
   }
 
   test_ThisExpression_constructor_param2() async {
@@ -2121,7 +2142,7 @@
       class A implements I {
         A(this.f^) {}
       }''');
-    await assertOpType(prefixed: true, constructorBody: true);
+    await assertOpType(prefixed: true);
   }
 
   test_ThisExpression_constructor_param3() async {
@@ -2130,7 +2151,7 @@
       class A implements I {
         A(this.^f) {}
       }''');
-    await assertOpType(prefixed: true, constructorBody: true);
+    await assertOpType(prefixed: true);
   }
 
   test_ThisExpression_constructor_param4() async {
@@ -2139,7 +2160,7 @@
       class A implements I {
         A(Str^ this.foo) {}
       }''');
-    await assertOpType(typeNames: true, constructorBody: true);
+    await assertOpType(typeNames: true);
   }
 
   test_TopLevelVariableDeclaration_typed_name() async {
@@ -2221,7 +2242,7 @@
 
 /// Common test methods to Dart1/Dart2 versions of OpType tests.
 class OpTypeTestCommon extends AbstractContextTest {
-  String testpath;
+  String testPath;
   int completionOffset;
   OpType visitor;
 
@@ -2232,7 +2253,7 @@
     expect(nextOffset, equals(-1), reason: 'too many ^');
     content = content.substring(0, completionOffset) +
         content.substring(completionOffset + 1);
-    super.addSource(testpath, content);
+    super.addSource(testPath, content);
   }
 
   Future<void> assertOpType(
@@ -2251,10 +2272,10 @@
       bool voidReturn: false,
       CompletionSuggestionKind kind:
           CompletionSuggestionKind.INVOCATION}) async {
-    AnalysisResult analysisResult = await driver.getResult(testpath);
+    ResolvedUnitResult resolvedUnit = await driver.getResult(testPath);
 
     CompletionTarget completionTarget =
-        new CompletionTarget.forOffset(analysisResult.unit, completionOffset);
+        new CompletionTarget.forOffset(resolvedUnit.unit, completionOffset);
     visitor = new OpType.forCompletion(completionTarget, completionOffset);
 
     expect(visitor.includeCaseLabelSuggestions, caseLabel, reason: 'caseLabel');
@@ -2283,6 +2304,6 @@
   @override
   void setUp() {
     super.setUp();
-    testpath = provider.convertPath('/completionTest.dart');
+    testPath = convertPath('/completionTest.dart');
   }
 }
diff --git a/pkg/analyzer_plugin/test/src/utilities/visitors/local_declaration_visitor_test.dart b/pkg/analyzer_plugin/test/src/utilities/visitors/local_declaration_visitor_test.dart
index 3811ea4..fd96c31 100644
--- a/pkg/analyzer_plugin/test/src/utilities/visitors/local_declaration_visitor_test.dart
+++ b/pkg/analyzer_plugin/test/src/utilities/visitors/local_declaration_visitor_test.dart
@@ -42,9 +42,9 @@
 ''');
     NodeList<CompilationUnitMember> declarations = unit.declarations;
     expect(declarations, hasLength(2));
-    FunctionDeclaration f = declarations[1];
+    FunctionDeclaration f = declarations[1] as FunctionDeclaration;
     expect(f, isNotNull);
-    BlockFunctionBody body = f.functionExpression.body;
+    BlockFunctionBody body = f.functionExpression.body as BlockFunctionBody;
     Statement statement = body.block.statements[0];
     expect(statement, const TypeMatcher<ForEachStatement>());
     statement.accept(new TestVisitor(statement.offset));
@@ -70,6 +70,9 @@
   void declaredFunctionTypeAlias(FunctionTypeAlias declaration) {}
 
   @override
+  void declaredGenericTypeAlias(GenericTypeAlias declaration) {}
+
+  @override
   void declaredLabel(Label label, bool isCaseLabel) {}
 
   @override
diff --git a/pkg/analyzer_plugin/test/support/abstract_context.dart b/pkg/analyzer_plugin/test/support/abstract_context.dart
index 8c7cdaf..9c14f2b 100644
--- a/pkg/analyzer_plugin/test/support/abstract_context.dart
+++ b/pkg/analyzer_plugin/test/support/abstract_context.dart
@@ -10,7 +10,6 @@
 import 'package:analyzer/dart/element/visitor.dart';
 import 'package:analyzer/exception/exception.dart';
 import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
@@ -22,8 +21,8 @@
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/generated/testing/element_search.dart';
 import 'package:analyzer/src/source/package_map_resolver.dart';
-
-import 'mock_sdk.dart';
+import 'package:analyzer/src/test_utilities/mock_sdk.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 
 /**
  * Finds an [Element] with the given [name].
@@ -47,8 +46,7 @@
  */
 typedef void _ElementVisitorFunction(Element element);
 
-class AbstractContextTest {
-  MemoryResourceProvider provider;
+class AbstractContextTest with ResourceProviderMixin {
   DartSdk sdk;
   Map<String, List<Folder>> packageMap;
   UriResolver resourceResolver;
@@ -64,7 +62,8 @@
    */
   AnalysisSession get session => driver.currentSession;
 
-  Source addMetaPackageSource() => addPackageSource('meta', 'meta.dart', r'''
+  void addMetaPackage() {
+    addPackageFile('meta', 'meta.dart', r'''
 library meta;
 
 const Required required = const Required();
@@ -74,21 +73,20 @@
   const Required([this.reason]);
 }
 ''');
+  }
 
-  Source addPackageSource(String packageName, String filePath, String content) {
-    packageMap[packageName] = [(newFolder('/pubcache/$packageName'))];
-    File file = newFile('/pubcache/$packageName/$filePath', content);
-    return file.createSource();
+  File addPackageFile(String packageName, String pathInLib, String content) {
+    var packageLibPath = '/.pub-cache/$packageName/lib';
+    packageMap[packageName] = [newFolder(packageLibPath)];
+    return newFile('$packageLibPath/$pathInLib', content: content);
   }
 
   Source addSource(String path, String content, [Uri uri]) {
-    if (path.startsWith('/')) {
-      path = provider.convertPath(path);
-    }
+    path = convertPath(path);
     driver.addFile(path);
     driver.changeFile(path);
     _fileContentOverlay[path] = content;
-    return provider.getFile(path).createSource();
+    return getFile(path).createSource();
   }
 
   Element findElementInUnit(CompilationUnit unit, String name,
@@ -98,28 +96,16 @@
         .single;
   }
 
-  File newFile(String path, [String content]) =>
-      provider.newFile(provider.convertPath(path), content ?? '');
-
-  Folder newFolder(String path) =>
-      provider.newFolder(provider.convertPath(path));
-
-  void processRequiredPlugins() {
-    AnalysisEngine.instance.processRequiredPlugins();
-  }
-
   Future<CompilationUnit> resolveLibraryUnit(Source source) async {
     return (await driver.getResult(source.fullName))?.unit;
   }
 
   void setUp() {
-    processRequiredPlugins();
-    setupResourceProvider();
-    sdk = new MockSdk(resourceProvider: provider);
-    resourceResolver = new ResourceUriResolver(provider);
+    sdk = new MockSdk(resourceProvider: resourceProvider);
+    resourceResolver = new ResourceUriResolver(resourceProvider);
     packageMap = new Map<String, List<Folder>>();
     PackageMapUriResolver packageResolver =
-        new PackageMapUriResolver(provider, packageMap);
+        new PackageMapUriResolver(resourceProvider, packageMap);
     SourceFactory sourceFactory = new SourceFactory(
         [new DartUriResolver(sdk), packageResolver, resourceResolver]);
     PerformanceLog log = new PerformanceLog(_logBuffer);
@@ -128,7 +114,7 @@
     _driver = new AnalysisDriver(
         scheduler,
         log,
-        provider,
+        resourceProvider,
         new MemoryByteStore(),
         _fileContentOverlay,
         null,
@@ -138,12 +124,7 @@
     AnalysisEngine.instance.logger = PrintLogger.instance;
   }
 
-  void setupResourceProvider() {
-    provider = new MemoryResourceProvider();
-  }
-
   void tearDown() {
-    provider = null;
     AnalysisEngine.instance.clearCaches();
     AnalysisEngine.instance.logger = null;
   }
diff --git a/pkg/analyzer_plugin/test/support/abstract_single_unit.dart b/pkg/analyzer_plugin/test/support/abstract_single_unit.dart
index 7a3b6bc..0b14065 100644
--- a/pkg/analyzer_plugin/test/support/abstract_single_unit.dart
+++ b/pkg/analyzer_plugin/test/support/abstract_single_unit.dart
@@ -49,7 +49,7 @@
   AstNode findNodeAtOffset(int offset, [Predicate<AstNode> predicate]) {
     AstNode result = new NodeLocator(offset).searchWithin(testUnit);
     if (result != null && predicate != null) {
-      result = result.getAncestor(predicate);
+      result = result.thisOrAncestorMatching(predicate);
     }
     return result;
   }
@@ -117,6 +117,6 @@
   @override
   void setUp() {
     super.setUp();
-    testFile = provider.convertPath('/test.dart');
+    testFile = convertPath('/test.dart');
   }
 }
diff --git a/pkg/analyzer_plugin/test/utilities/analyzer_converter_test.dart b/pkg/analyzer_plugin/test/utilities/analyzer_converter_test.dart
index 3d17d82..775e9a6 100644
--- a/pkg/analyzer_plugin/test/utilities/analyzer_converter_test.dart
+++ b/pkg/analyzer_plugin/test/utilities/analyzer_converter_test.dart
@@ -63,10 +63,8 @@
   @override
   void setUp() {
     super.setUp();
-    source = provider
-        .newFile(provider.convertPath('/foo/bar.dart'), '')
-        .createSource();
-    testFile = provider.convertPath('/test.dart');
+    source = newFile('/foo/bar.dart').createSource();
+    testFile = convertPath('/test.dart');
   }
 
   test_convertAnalysisError_lineInfo_noSeverity() {
@@ -187,7 +185,8 @@
 class B<K, V> {}''');
     analyzer.CompilationUnit unit = await resolveLibraryUnit(source);
     {
-      analyzer.ClassElement engineElement = findElementInUnit(unit, '_A');
+      analyzer.ClassElement engineElement =
+          findElementInUnit(unit, '_A') as analyzer.ClassElement;
       // create notification Element
       plugin.Element element = converter.convertElement(engineElement);
       expect(element.kind, plugin.ElementKind.CLASS);
@@ -209,7 +208,8 @@
               plugin.Element.FLAG_PRIVATE);
     }
     {
-      analyzer.ClassElement engineElement = findElementInUnit(unit, 'B');
+      analyzer.ClassElement engineElement =
+          findElementInUnit(unit, 'B') as analyzer.ClassElement;
       // create notification Element
       plugin.Element element = converter.convertElement(engineElement);
       expect(element.kind, plugin.ElementKind.CLASS);
@@ -226,7 +226,7 @@
 }''');
     analyzer.CompilationUnit unit = await resolveLibraryUnit(source);
     analyzer.ConstructorElement engineElement =
-        findElementInUnit(unit, 'myConstructor');
+        findElementInUnit(unit, 'myConstructor') as analyzer.ConstructorElement;
     // create notification Element
     plugin.Element element = converter.convertElement(engineElement);
     expect(element.kind, plugin.ElementKind.CONSTRUCTOR);
@@ -264,7 +264,8 @@
 enum E2 { three, four }''');
     analyzer.CompilationUnit unit = await resolveLibraryUnit(source);
     {
-      analyzer.ClassElement engineElement = findElementInUnit(unit, '_E1');
+      analyzer.ClassElement engineElement =
+          findElementInUnit(unit, '_E1') as analyzer.ClassElement;
       expect(engineElement.hasDeprecated, isTrue);
       // create notification Element
       plugin.Element element = converter.convertElement(engineElement);
@@ -286,7 +287,8 @@
               plugin.Element.FLAG_PRIVATE);
     }
     {
-      analyzer.ClassElement engineElement = findElementInUnit(unit, 'E2');
+      analyzer.ClassElement engineElement =
+          findElementInUnit(unit, 'E2') as analyzer.ClassElement;
       // create notification Element
       plugin.Element element = converter.convertElement(engineElement);
       expect(element.kind, plugin.ElementKind.ENUM);
@@ -303,7 +305,8 @@
 enum E2 { three, four }''');
     analyzer.CompilationUnit unit = await resolveLibraryUnit(source);
     {
-      analyzer.FieldElement engineElement = findElementInUnit(unit, 'one');
+      analyzer.FieldElement engineElement =
+          findElementInUnit(unit, 'one') as analyzer.FieldElement;
       // create notification Element
       plugin.Element element = converter.convertElement(engineElement);
       expect(element.kind, plugin.ElementKind.ENUM_CONSTANT);
@@ -327,7 +330,8 @@
           plugin.Element.FLAG_CONST | plugin.Element.FLAG_STATIC);
     }
     {
-      analyzer.FieldElement engineElement = findElementInUnit(unit, 'three');
+      analyzer.FieldElement engineElement =
+          findElementInUnit(unit, 'three') as analyzer.FieldElement;
       // create notification Element
       plugin.Element element = converter.convertElement(engineElement);
       expect(element.kind, plugin.ElementKind.ENUM_CONSTANT);
@@ -393,7 +397,8 @@
   static const myField = 42;
 }''');
     analyzer.CompilationUnit unit = await resolveLibraryUnit(source);
-    analyzer.FieldElement engineElement = findElementInUnit(unit, 'myField');
+    analyzer.FieldElement engineElement =
+        findElementInUnit(unit, 'myField') as analyzer.FieldElement;
     // create notification Element
     plugin.Element element = converter.convertElement(engineElement);
     expect(element.kind, plugin.ElementKind.FIELD);
@@ -418,7 +423,7 @@
 ''');
     analyzer.CompilationUnit unit = await resolveLibraryUnit(source);
     analyzer.FunctionTypeAliasElement engineElement =
-        findElementInUnit(unit, 'F');
+        findElementInUnit(unit, 'F') as analyzer.FunctionTypeAliasElement;
     // create notification Element
     plugin.Element element = converter.convertElement(engineElement);
     expect(element.kind, plugin.ElementKind.FUNCTION_TYPE_ALIAS);
@@ -437,6 +442,31 @@
     expect(element.flags, 0);
   }
 
+  test_convertElement_genericTypeAlias_function() async {
+    analyzer.Source source = addSource(testFile, '''
+typedef F<T> = int Function(String x);
+''');
+    analyzer.CompilationUnit unit = await resolveLibraryUnit(source);
+    analyzer.FunctionTypeAliasElement engineElement =
+        findElementInUnit(unit, 'F') as analyzer.FunctionTypeAliasElement;
+    // create notification Element
+    plugin.Element element = converter.convertElement(engineElement);
+    expect(element.kind, plugin.ElementKind.FUNCTION_TYPE_ALIAS);
+    expect(element.name, 'F');
+    expect(element.typeParameters, '<T>');
+    {
+      plugin.Location location = element.location;
+      expect(location.file, testFile);
+      expect(location.offset, 8);
+      expect(location.length, 'F'.length);
+      expect(location.startLine, 1);
+      expect(location.startColumn, 9);
+    }
+    expect(element.parameters, '(String x)');
+    expect(element.returnType, 'int');
+    expect(element.flags, 0);
+  }
+
   test_convertElement_getter() async {
     analyzer.Source source = addSource(testFile, '''
 class A {
@@ -444,7 +474,8 @@
 }''');
     analyzer.CompilationUnit unit = await resolveLibraryUnit(source);
     analyzer.PropertyAccessorElement engineElement =
-        findElementInUnit(unit, 'myGetter', analyzer.ElementKind.GETTER);
+        findElementInUnit(unit, 'myGetter', analyzer.ElementKind.GETTER)
+            as analyzer.PropertyAccessorElement;
     // create notification Element
     plugin.Element element = converter.convertElement(engineElement);
     expect(element.kind, plugin.ElementKind.GETTER);
@@ -470,7 +501,8 @@
   }
 }''');
     analyzer.CompilationUnit unit = await resolveLibraryUnit(source);
-    analyzer.MethodElement engineElement = findElementInUnit(unit, 'myMethod');
+    analyzer.MethodElement engineElement =
+        findElementInUnit(unit, 'myMethod') as analyzer.MethodElement;
     // create notification Element
     plugin.Element element = converter.convertElement(engineElement);
     expect(element.kind, plugin.ElementKind.METHOD);
@@ -495,7 +527,8 @@
 }''');
     analyzer.CompilationUnit unit = await resolveLibraryUnit(source);
     analyzer.PropertyAccessorElement engineElement =
-        findElementInUnit(unit, 'mySetter', analyzer.ElementKind.SETTER);
+        findElementInUnit(unit, 'mySetter', analyzer.ElementKind.SETTER)
+            as analyzer.PropertyAccessorElement;
     // create notification Element
     plugin.Element element = converter.convertElement(engineElement);
     expect(element.kind, plugin.ElementKind.SETTER);
@@ -572,7 +605,8 @@
   }
 }''');
     analyzer.CompilationUnit unit = await resolveLibraryUnit(source);
-    analyzer.LabelElement engineElement = findElementInUnit(unit, 'myLabel');
+    analyzer.LabelElement engineElement =
+        findElementInUnit(unit, 'myLabel') as analyzer.LabelElement;
     // create notification Element
     plugin.Element element = converter.convertElement(engineElement);
     expect(element.kind, plugin.ElementKind.LABEL);
diff --git a/pkg/analyzer_plugin/test/utilities/completion/completion_contributor_util.dart b/pkg/analyzer_plugin/test/utilities/completion/completion_contributor_util.dart
index b8a4aef..6fe32fb 100644
--- a/pkg/analyzer_plugin/test/utilities/completion/completion_contributor_util.dart
+++ b/pkg/analyzer_plugin/test/utilities/completion/completion_contributor_util.dart
@@ -446,18 +446,15 @@
     return cs;
   }
 
-  /**
-   * Return a [Future] that completes with the containing library information
-   * after it is accessible via [context.getLibrariesContaining].
-   */
   Future<void> computeLibrariesContaining() {
     return driver.getResult(testFile).then((result) => null);
   }
 
   Future computeSuggestions() async {
-    ResolveResult result = await driver.getResult(testFile);
+    ResolvedUnitResult result = await driver.getResult(testFile);
     testSource = result.unit.declaredElement.source;
-    request = new DartCompletionRequestImpl(provider, completionOffset, result);
+    request = new DartCompletionRequestImpl(
+        resourceProvider, completionOffset, result);
 
     CompletionTarget target =
         new CompletionTarget.forOffset(request.result.unit, request.offset);
@@ -478,13 +475,16 @@
    */
   void configureFlutterPkg(Map<String, String> pathToCode) {
     pathToCode.forEach((path, code) {
-      provider.newFile('$flutterPkgLibPath/$path', code);
+      newFile('$flutterPkgLibPath/$path', content: code);
     });
     // configure SourceFactory
-    Folder myPkgFolder = provider.getResource(flutterPkgLibPath);
-    UriResolver pkgResolver = new PackageMapUriResolver(provider, {
-      'flutter': [myPkgFolder]
-    });
+    Folder myPkgFolder = getFolder(flutterPkgLibPath);
+    UriResolver pkgResolver = new PackageMapUriResolver(
+      resourceProvider,
+      {
+        'flutter': [myPkgFolder]
+      },
+    );
     SourceFactory sourceFactory = new SourceFactory(
         [new DartUriResolver(sdk), pkgResolver, resourceResolver]);
     driver.configure(sourceFactory: sourceFactory);
@@ -561,7 +561,7 @@
   @override
   void setUp() {
     super.setUp();
-    testFile = provider.convertPath('/completionTest.dart');
+    testFile = convertPath('/completionTest.dart');
     contributor = createContributor();
   }
 }
diff --git a/pkg/analyzer_plugin/test/utilities/completion/completion_target_test.dart b/pkg/analyzer_plugin/test/utilities/completion/completion_target_test.dart
index 8e1674e..9b44141 100644
--- a/pkg/analyzer_plugin/test/utilities/completion/completion_target_test.dart
+++ b/pkg/analyzer_plugin/test/utilities/completion/completion_target_test.dart
@@ -2,7 +2,6 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_ast_factory.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ -26,6 +25,17 @@
 
 @reflectiveTest
 class CompletionTargetTest {
+  /// Parse a dangling expression (no parent node). The angular plugin, for
+  /// instance, does this.
+  Expression parseDanglingDart(String code) {
+    final reader = new CharSequenceReader(code);
+    final scanner = new Scanner(null, reader, null);
+    final source = new StringSource(code, 'test.dart');
+    final listener = new _ErrorCollector();
+
+    return new Parser(source, listener).parseExpression(scanner.tokenize());
+  }
+
   test_danglingExpressionCompletionIsValid() {
     // Test that users can parse dangling expressions of dart and autocomplete
     // them without crash/with the correct offset information.
@@ -39,17 +49,6 @@
     expect(replacementRange.length, 'identifier'.length);
   }
 
-  /// Parse a dangling expression (no parent node). The angular plugin, for
-  /// instance, does this.
-  Expression parseDanglingDart(String code) {
-    final reader = new CharSequenceReader(code);
-    final scanner = new Scanner(null, reader, null);
-    final source = new StringSource(code, 'test.dart');
-    final listener = new _ErrorCollector();
-
-    return new Parser(source, listener).parseExpression(scanner.tokenize());
-  }
-
   Expression wrapForCompliance(Expression expression) {
     // TODO(mfairhurst) This should be performed for clients or the need should
     // be dropped. It's a fairly valid invariant that all autocompletion target
@@ -69,10 +68,6 @@
 
   _ErrorCollector();
 
-  /// The group of errors collected.
-  AnalyzerErrorGroup get group =>
-      new AnalyzerErrorGroup.fromAnalysisErrors(_errors);
-
   /// Whether any errors where collected.
   bool get hasErrors => !_errors.isEmpty;
 
diff --git a/pkg/analyzer_plugin/test/utilities/completion/inherited_reference_contributor_test.dart b/pkg/analyzer_plugin/test/utilities/completion/inherited_reference_contributor_test.dart
index 9ac962d..b710466 100644
--- a/pkg/analyzer_plugin/test/utilities/completion/inherited_reference_contributor_test.dart
+++ b/pkg/analyzer_plugin/test/utilities/completion/inherited_reference_contributor_test.dart
@@ -28,7 +28,7 @@
 
   /// Sanity check.  Permutations tested in local_ref_contributor.
   test_ArgDefaults_inherited_method_with_required_named() async {
-    addMetaPackageSource();
+    addMetaPackage();
     resolveSource('/testB.dart', '''
 import 'package:meta/meta.dart';
 
@@ -71,7 +71,7 @@
     assertNotSuggested('B');
     assertNotSuggested('A');
     assertNotSuggested('Object');
-    assertSuggestMethod('y', 'A', 'dynamic');
+    assertSuggestMethod('y', 'A', 'Future<dynamic>');
   }
 
   test_Block_inherited_imported() async {
diff --git a/pkg/analyzer_plugin/test/utilities/completion/type_member_contributor_test.dart b/pkg/analyzer_plugin/test/utilities/completion/type_member_contributor_test.dart
index 8b3178c..3bb0120 100644
--- a/pkg/analyzer_plugin/test/utilities/completion/type_member_contributor_test.dart
+++ b/pkg/analyzer_plugin/test/utilities/completion/type_member_contributor_test.dart
@@ -82,7 +82,7 @@
   }
 
   test_ArgDefaults_method_with_optional_positional() async {
-    addMetaPackageSource();
+    addMetaPackage();
     addTestSource('''
 import 'package:meta/meta.dart';
 
@@ -97,7 +97,7 @@
   }
 
   test_ArgDefaults_method_with_required_named() async {
-    addMetaPackageSource();
+    addMetaPackage();
     addTestSource('''
 import 'package:meta/meta.dart';
 
@@ -1086,10 +1086,10 @@
   }
 
   test_Block_unimported() async {
-    addPackageSource('myBar', 'bar.dart', 'class Foo2 { Foo2() { } }');
+    addPackageFile('myBar', 'bar.dart', 'class Foo2 { Foo2() { } }');
     addSource(
         '/proj/testAB.dart', 'import "package:myBar/bar.dart"; class Foo { }');
-    testFile = provider.convertPath('/proj/completionTest.dart');
+    testFile = convertPath('/proj/completionTest.dart');
     addTestSource('class C {foo(){F^}}');
     await computeSuggestions();
     expect(replacementOffset, completionOffset - 1);
diff --git a/pkg/analyzer_plugin/test/utilities/navigation_test.dart b/pkg/analyzer_plugin/test/utilities/navigation_test.dart
index fdafcd3..80ec0db 100644
--- a/pkg/analyzer_plugin/test/utilities/navigation_test.dart
+++ b/pkg/analyzer_plugin/test/utilities/navigation_test.dart
@@ -3,7 +3,7 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'package:analyzer/dart/analysis/results.dart';
-import 'package:analyzer/file_system/memory_file_system.dart';
+import 'package:analyzer/src/test_utilities/resource_provider_mixin.dart';
 import 'package:analyzer_plugin/src/utilities/navigation/navigation.dart';
 import 'package:analyzer_plugin/utilities/generator.dart';
 import 'package:analyzer_plugin/utilities/navigation/navigation.dart';
@@ -17,15 +17,13 @@
 }
 
 @reflectiveTest
-class NavigationGeneratorTest {
-  MemoryResourceProvider provider = new MemoryResourceProvider();
-
-  ResolveResult resolveResult = new MockAnalysisResult(path: 'a.dart');
+class NavigationGeneratorTest with ResourceProviderMixin {
+  ResolvedUnitResult resolvedUnit = new MockResolvedUnitResult(path: 'a.dart');
 
   test_none() {
     NavigationGenerator generator = new NavigationGenerator([]);
     NavigationRequest request =
-        new DartNavigationRequestImpl(provider, 0, 100, resolveResult);
+        new DartNavigationRequestImpl(resourceProvider, 0, 100, resolvedUnit);
     GeneratorResult result = generator.generateNavigationNotification(request);
     expect(result.notifications, hasLength(1));
   }
@@ -34,7 +32,7 @@
     TestContributor contributor = new TestContributor();
     NavigationGenerator generator = new NavigationGenerator([contributor]);
     NavigationRequest request =
-        new DartNavigationRequestImpl(provider, 0, 100, resolveResult);
+        new DartNavigationRequestImpl(resourceProvider, 0, 100, resolvedUnit);
     GeneratorResult result = generator.generateNavigationNotification(request);
     expect(result.notifications, hasLength(1));
     expect(contributor.count, 1);
@@ -53,7 +51,7 @@
     NavigationGenerator generator = new NavigationGenerator(
         [contributor1, contributor2, contributor3, contributor4]);
     NavigationRequest request =
-        new DartNavigationRequestImpl(provider, 0, 100, resolveResult);
+        new DartNavigationRequestImpl(resourceProvider, 0, 100, resolvedUnit);
     GeneratorResult result = generator.generateNavigationNotification(request);
     expect(result.notifications, hasLength(3));
     expect(
diff --git a/pkg/analyzer_plugin/test/utilities/range_factory_test.dart b/pkg/analyzer_plugin/test/utilities/range_factory_test.dart
index af79bc1..105ae6f 100644
--- a/pkg/analyzer_plugin/test/utilities/range_factory_test.dart
+++ b/pkg/analyzer_plugin/test/utilities/range_factory_test.dart
@@ -29,7 +29,8 @@
 
   test_endEnd() async {
     await resolveTestUnit('main() {}');
-    FunctionDeclaration mainFunction = testUnit.declarations[0];
+    FunctionDeclaration mainFunction =
+        testUnit.declarations[0] as FunctionDeclaration;
     SimpleIdentifier mainName = mainFunction.name;
     FunctionBody mainBody = mainFunction.functionExpression.body;
     expect(range.endEnd(mainName, mainBody), new SourceRange(4, 5));
@@ -37,14 +38,16 @@
 
   test_endLength() async {
     await resolveTestUnit('main() {}');
-    FunctionDeclaration mainFunction = testUnit.declarations[0];
+    FunctionDeclaration mainFunction =
+        testUnit.declarations[0] as FunctionDeclaration;
     SimpleIdentifier mainName = mainFunction.name;
     expect(range.endLength(mainName, 3), new SourceRange(4, 3));
   }
 
   test_endStart() async {
     await resolveTestUnit('main() {}');
-    FunctionDeclaration mainFunction = testUnit.declarations[0];
+    FunctionDeclaration mainFunction =
+        testUnit.declarations[0] as FunctionDeclaration;
     SimpleIdentifier mainName = mainFunction.name;
     FunctionBody mainBody = mainFunction.functionExpression.body;
     expect(range.endStart(mainName, mainBody), new SourceRange(4, 3));
@@ -58,14 +61,16 @@
 
   test_node() async {
     await resolveTestUnit('main() {}');
-    FunctionDeclaration mainFunction = testUnit.declarations[0];
+    FunctionDeclaration mainFunction =
+        testUnit.declarations[0] as FunctionDeclaration;
     SimpleIdentifier mainName = mainFunction.name;
     expect(range.node(mainName), new SourceRange(0, 4));
   }
 
   test_nodes() async {
     await resolveTestUnit(' main() {}');
-    FunctionDeclaration mainFunction = testUnit.declarations[0];
+    FunctionDeclaration mainFunction =
+        testUnit.declarations[0] as FunctionDeclaration;
     SimpleIdentifier mainName = mainFunction.name;
     FunctionBody mainBody = mainFunction.functionExpression.body;
     expect(range.nodes([mainName, mainBody]), new SourceRange(1, 9));
@@ -82,7 +87,8 @@
 
   test_startEnd_nodeNode() async {
     await resolveTestUnit(' main() {}');
-    FunctionDeclaration mainFunction = testUnit.declarations[0];
+    FunctionDeclaration mainFunction =
+        testUnit.declarations[0] as FunctionDeclaration;
     SimpleIdentifier mainName = mainFunction.name;
     FunctionBody mainBody = mainFunction.functionExpression.body;
     expect(range.startEnd(mainName, mainBody), new SourceRange(1, 9));
@@ -90,7 +96,8 @@
 
   test_startLength_node() async {
     await resolveTestUnit(' main() {}');
-    FunctionDeclaration mainFunction = testUnit.declarations[0];
+    FunctionDeclaration mainFunction =
+        testUnit.declarations[0] as FunctionDeclaration;
     SimpleIdentifier mainName = mainFunction.name;
     expect(range.startLength(mainName, 10), new SourceRange(1, 10));
   }
@@ -101,7 +108,8 @@
 
   test_startStart_nodeNode() async {
     await resolveTestUnit('main() {}');
-    FunctionDeclaration mainFunction = testUnit.declarations[0];
+    FunctionDeclaration mainFunction =
+        testUnit.declarations[0] as FunctionDeclaration;
     SimpleIdentifier mainName = mainFunction.name;
     FunctionBody mainBody = mainFunction.functionExpression.body;
     expect(range.startStart(mainName, mainBody), new SourceRange(0, 7));
@@ -109,7 +117,8 @@
 
   test_token() async {
     await resolveTestUnit(' main() {}');
-    FunctionDeclaration mainFunction = testUnit.declarations[0];
+    FunctionDeclaration mainFunction =
+        testUnit.declarations[0] as FunctionDeclaration;
     SimpleIdentifier mainName = mainFunction.name;
     expect(range.token(mainName.beginToken), new SourceRange(1, 4));
   }
diff --git a/pkg/dev_compiler/lib/src/analyzer/code_generator.dart b/pkg/dev_compiler/lib/src/analyzer/code_generator.dart
index 32f7d96..ae1d5ef 100644
--- a/pkg/dev_compiler/lib/src/analyzer/code_generator.dart
+++ b/pkg/dev_compiler/lib/src/analyzer/code_generator.dart
@@ -5718,6 +5718,10 @@
         () => _emitConstList(elementType, _visitExpressionList(node.elements)));
   }
 
+  @override
+  JS.Expression visitSetLiteral(SetLiteral node) =>
+      throw new UnsupportedError('literal sets are not yet supported');
+
   JS.Expression _emitConstList(
       DartType elementType, List<JS.Expression> elements) {
     // dart.constList helper internally depends on _interceptors.JSArray.
diff --git a/pkg/dev_compiler/lib/src/analyzer/driver.dart b/pkg/dev_compiler/lib/src/analyzer/driver.dart
index 63d1223..ea9db64 100644
--- a/pkg/dev_compiler/lib/src/analyzer/driver.dart
+++ b/pkg/dev_compiler/lib/src/analyzer/driver.dart
@@ -15,6 +15,7 @@
 import 'package:analyzer/src/dart/analysis/file_state.dart';
 import 'package:analyzer/src/dart/analysis/library_analyzer.dart';
 import 'package:analyzer/src/dart/analysis/performance_logger.dart';
+import 'package:analyzer/src/dart/element/inheritance_manager2.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
@@ -324,8 +325,8 @@
         (uri) => _isLibraryUri('$uri'),
         context,
         resynthesizer,
-        libraryFile,
-        _fsState.resourceProvider);
+        InheritanceManager2(context.typeSystem),
+        libraryFile);
     // TODO(jmesserly): ideally we'd use the existing public `analyze()` method,
     // but it's async. We can't use `async` here because it would break our
     // developer tools extension (see web/web_command.dart). We should be able
diff --git a/pkg/dev_compiler/lib/src/kernel/analyzer_to_kernel.dart b/pkg/dev_compiler/lib/src/kernel/analyzer_to_kernel.dart
index a94f7f6..e7f7da5 100644
--- a/pkg/dev_compiler/lib/src/kernel/analyzer_to_kernel.dart
+++ b/pkg/dev_compiler/lib/src/kernel/analyzer_to_kernel.dart
@@ -869,7 +869,7 @@
     a.SummaryDataStore summaryData, String dartSdkPath) {
   var context = _createContextForSummaries(summaryData, dartSdkPath);
   return a.StoreBasedSummaryResynthesizer(
-      context, context.sourceFactory, /*strongMode*/ true, summaryData);
+      context, null, context.sourceFactory, /*strongMode*/ true, summaryData);
 }
 
 /// Creates a dummy Analyzer context so we can use summary resynthesizer.
diff --git a/pkg/front_end/lib/src/fasta/scanner.dart b/pkg/front_end/lib/src/fasta/scanner.dart
index 8e24f03..f276eda 100644
--- a/pkg/front_end/lib/src/fasta/scanner.dart
+++ b/pkg/front_end/lib/src/fasta/scanner.dart
@@ -83,12 +83,16 @@
 /// Scan/tokenize the given [source].
 /// If [recover] is null, then the [defaultRecoveryStrategy] is used.
 ScannerResult scanString(String source,
-    {bool includeComments: false,
+    {bool enableGtGtGt: false,
+    bool includeComments: false,
     bool scanLazyAssignmentOperators: false,
     Recover recover}) {
+  // TODO(brianwilkerson): Remove the parameter `enableGtGtGt` after the feature
+  // has been anabled by default.
   assert(source != null, 'source must not be null');
   StringScanner scanner =
       new StringScanner(source, includeComments: includeComments);
+  scanner.enableGtGtGt = enableGtGtGt;
   return _tokenizeAndRecover(scanner, recover, source: source);
 }
 
diff --git a/pkg/front_end/pubspec.yaml b/pkg/front_end/pubspec.yaml
index 97934cb..ad2abeb 100644
--- a/pkg/front_end/pubspec.yaml
+++ b/pkg/front_end/pubspec.yaml
@@ -1,7 +1,7 @@
 name: front_end
 # Currently, front_end API is not stable and users should not
 # depend on semver semantics when depending on this package.
-version: 0.1.6+8
+version: 0.1.7
 author: Dart Team <misc@dartlang.org>
 description: Front end for compilation of Dart code.
 homepage: https://github.com/dart-lang/sdk/tree/master/pkg/front_end
@@ -11,14 +11,14 @@
   charcode: '^1.1.1'
   convert: '^2.0.1'
   crypto: '^2.0.2'
-  kernel: 0.3.6+8
+  kernel: 0.3.7
   meta: '^1.1.1'
   package_config: '^1.0.1'
   path: '^1.3.9'
   source_span: '^1.2.3'
   yaml: '^2.1.12'
 dev_dependencies:
-  analyzer: '^0.33.6'
+  analyzer: 0.34.0
   args: '>=0.13.0 <2.0.0'
   build_integration:
     path: ../build_integration
diff --git a/pkg/kernel/pubspec.yaml b/pkg/kernel/pubspec.yaml
index 0be2276..04f64a9 100644
--- a/pkg/kernel/pubspec.yaml
+++ b/pkg/kernel/pubspec.yaml
@@ -1,7 +1,7 @@
 name: kernel
 # Currently, kernel API is not stable and users should
 # not depend on semver semantics when depending on this package.
-version: 0.3.6+8
+version: 0.3.7
 author: Dart Team <misc@dartlang.org>
 description: Dart IR (Intermediate Representation)
 homepage: https://github.com/dart-lang/sdk/tree/master/pkg/kernel
@@ -11,7 +11,7 @@
   path: ^1.3.9
   args: '>=0.13.4 <2.0.0'
 dev_dependencies:
-  front_end: 0.1.6+8
+  front_end: 0.1.7
   test: ^1.3.4
   stack_trace: ^1.6.6
   test_reflective_loader: ^0.1.0
diff --git a/tests/co19_2/co19_2-analyzer.status b/tests/co19_2/co19_2-analyzer.status
index a13758c..c111847 100644
--- a/tests/co19_2/co19_2-analyzer.status
+++ b/tests/co19_2/co19_2-analyzer.status
@@ -174,11 +174,9 @@
 LanguageFeatures/Set-literals/non_constant_set_literals_A01_t01: CompileTimeError # This feature is not implemented yet
 LanguageFeatures/Set-literals/non_constant_set_literals_A02_t01: CompileTimeError # This feature is not implemented yet
 LanguageFeatures/Set-literals/semantics_A04_t01: CompileTimeError # This feature is not implemented yet
-LanguageFeatures/Set-literals/semantics_A05_t01: CompileTimeError # This feature is not implemented yet
 LanguageFeatures/Set-literals/set_literals_A01_t01: CompileTimeError # This feature is not implemented yet
 LanguageFeatures/Set-literals/set_literals_A02_t01: CompileTimeError # This feature is not implemented yet
 LanguageFeatures/Set-literals/set_literals_A04_t01: CompileTimeError # This feature is not implemented yet
-LanguageFeatures/Simple-bounds/dynamic/class_typedef_l1_t02: CompileTimeError
 LanguageFeatures/Simple-bounds/static/class_typedef_l1_t01/none: CompileTimeError
 LanguageFeatures/Simple-bounds/static/class_typedef_l1_t02/none: CompileTimeError
 LanguageFeatures/Simple-bounds/static/class_typedef_l1_t03/none: CompileTimeError
@@ -199,7 +197,6 @@
 LanguageFeatures/Super-mixins/covariance_t03: MissingCompileTimeError # Issue 35111
 LanguageFeatures/Super-mixins/covariance_t06: MissingCompileTimeError # Issue 35111
 LanguageFeatures/Super-mixins/covariance_t07: MissingCompileTimeError # Issue 35111
-LanguageFeatures/Super-mixins/super_invocation_t19: CompileTimeError # Issue 35090
 LanguageFeatures/regression/33585_t01: MissingCompileTimeError # Please triage this failure
 LanguageFeatures/regression/33585_t02: MissingCompileTimeError # Please triage this failure
 LanguageFeatures/regression/33597_t01: MissingCompileTimeError # Please triage this failure
diff --git a/tests/language_2/issue34489_test.dart b/tests/language_2/issue34489_test.dart
new file mode 100644
index 0000000..59553a3
--- /dev/null
+++ b/tests/language_2/issue34489_test.dart
@@ -0,0 +1,11 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+class C<T> {
+  var field = T;
+}
+
+main() {
+  new C().field = 'bad'; //# 01: compile-time error
+}
diff --git a/tests/language_2/issue34495_test.dart b/tests/language_2/issue34495_test.dart
new file mode 100644
index 0000000..e599403
--- /dev/null
+++ b/tests/language_2/issue34495_test.dart
@@ -0,0 +1,7 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+final foo = A<B>.foo(); //# 01: compile-time error
+
+main() {}
diff --git a/tests/language_2/issue35043_test.dart b/tests/language_2/issue35043_test.dart
new file mode 100644
index 0000000..95c5f13
--- /dev/null
+++ b/tests/language_2/issue35043_test.dart
@@ -0,0 +1,7 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+final foo = Map<int>(); //# 01: compile-time error
+
+main() {}
diff --git a/tests/language_2/issue35090_test.dart b/tests/language_2/issue35090_test.dart
new file mode 100644
index 0000000..3e3c564
--- /dev/null
+++ b/tests/language_2/issue35090_test.dart
@@ -0,0 +1,32 @@
+// Copyright (c) 2018, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import "package:expect/expect.dart";
+
+class A {
+  int get g => 0;
+}
+
+class C implements A {
+  noSuchMethod(Invocation i) {
+    return 1;
+  }
+}
+
+mixin M on A {
+  int test() {
+    return super.g;
+  }
+
+  noSuchMethod(Invocation i) {
+    return 2;
+  }
+}
+
+class MA extends C with M {}
+
+main() {
+  Expect.equals(new MA().g, 2);
+  Expect.equals(new MA().test(), 2);
+}
diff --git a/tests/language_2/language_2_analyzer.status b/tests/language_2/language_2_analyzer.status
index a1c001a..e48117e 100644
--- a/tests/language_2/language_2_analyzer.status
+++ b/tests/language_2/language_2_analyzer.status
@@ -11,7 +11,6 @@
 accessor_conflict_import_prefixed2_test: CompileTimeError # Issue 25626
 accessor_conflict_import_prefixed_test: CompileTimeError # Issue 25626
 accessor_conflict_import_test: CompileTimeError # Issue 25626
-additional_interface_adds_optional_args_test: CompileTimeError # Issue #30568
 cascaded_forwarding_stubs_test: CompileTimeError # Issue 34329
 config_import_corelib_test: CompileTimeError, StaticWarning, OK # failing-by-design: Will never pass, see Issue #34332
 const_cast2_test/01: CompileTimeError # failing-by-design: Not a const expression, see Issue #34334
@@ -72,12 +71,10 @@
 large_class_declaration_test: Slow, Pass
 malformed2_test: Pass, MissingCompileTimeError # Flaky: issue 31056.
 mixin_declaration/mixin_declaration_factory_test/02: Crash # Issue 34809
-mixin_declaration/mixin_declaration_invalid_superinvocation_test/10: CompileTimeError # Issue 30552
 mixin_method_override_test/01: MissingCompileTimeError
 mixin_super_2_test: CompileTimeError
 mixin_super_use_test: CompileTimeError
 mock_writable_final_private_field_test: CompileTimeError # failing-by-design, see Issue #34377
-multiple_interface_inheritance_test: CompileTimeError # Issue 30552
 nested_generic_closure_test: CompileTimeError # Issue #28515
 no_main_test/01: Fail # failing-by-design, the analyzer has no restriction that a library include a main function.
 no_such_constructor2_test: StaticWarning
@@ -94,16 +91,13 @@
 regress_29025_test: CompileTimeError # Issue 29081
 regress_29405_test: CompileTimeError # Issue 29421
 regress_29784_test/02: MissingCompileTimeError # Issue 29784
-regress_30121_test: CompileTimeError # Issue 31087
 regress_30339_test: CompileTimeError
 regress_33479_test/01: Crash # Issue #33479
 set_literals/*: Skip
 setter3_test/01: CompileTimeError # Invalid test, see https://github.com/dart-lang/sdk/issues/33837
 setter3_test/02: CompileTimeError # Invalid test, see https://github.com/dart-lang/sdk/issues/33837
 super_bound_closure_test/none: CompileTimeError
-super_no_such_method1_test: CompileTimeError # Invalid test, probably, see https://github.com/dart-lang/sdk/issues/33963
-super_no_such_method2_test: CompileTimeError # Invalid test, probably, see https://github.com/dart-lang/sdk/issues/33963
-super_no_such_method3_test: CompileTimeError # Invalid test, probably, see https://github.com/dart-lang/sdk/issues/33963
+super_call4_test/01: MissingCompileTimeError
 super_setter_test: CompileTimeError # Invalid test, see https://github.com/dart-lang/sdk/issues/33837
 syntax_test/60: MissingCompileTimeError
 syntax_test/61: MissingCompileTimeError
diff --git a/tests/language_2/language_2_dartdevc.status b/tests/language_2/language_2_dartdevc.status
index f8c2bfc..3816f84 100644
--- a/tests/language_2/language_2_dartdevc.status
+++ b/tests/language_2/language_2_dartdevc.status
@@ -10,7 +10,6 @@
 accessor_conflict_import_prefixed2_test: CompileTimeError # Issue 25626
 accessor_conflict_import_prefixed_test: CompileTimeError # Issue 25626
 accessor_conflict_import_test: CompileTimeError # Issue 25626
-additional_interface_adds_optional_args_test: CompileTimeError # Issue #30568
 assertion_test: RuntimeError # Issue 30326; Expect.equals(expected: <1>, actual: <0>) fails.
 async_star_test/01: RuntimeError
 async_star_test/03: RuntimeError
@@ -84,7 +83,7 @@
 invalid_returns/sync_invalid_return_03_test/none: CompileTimeError # issue #34319
 invalid_returns/sync_invalid_return_04_test/none: CompileTimeError # issue #34319
 invalid_returns/sync_invalid_return_05_test/none: CompileTimeError # issue #34319
-issue31596_implement_covariant_test: CompileTimeError
+issue31596_implement_covariant_test: CompileTimeError # Issue #31596
 issue31596_override_test/01: CompileTimeError
 issue31596_override_test/02: CompileTimeError
 issue31596_override_test/03: CompileTimeError
@@ -102,12 +101,10 @@
 large_class_declaration_test: Slow, Pass
 left_shift_test: RuntimeError # Ints and doubles are unified.
 mixin_declaration/mixin_declaration_factory_test/02: Crash
-mixin_declaration/mixin_declaration_invalid_superinvocation_test/10: CompileTimeError # Analyzer chooses wrong(?) super method.
 mixin_method_override_test/01: MissingCompileTimeError
 mixin_super_2_test: CompileTimeError # Issue 34806
 mixin_super_use_test: CompileTimeError # Issue 34806
 mock_writable_final_private_field_test: CompileTimeError # Issue 30848
-multiple_interface_inheritance_test: CompileTimeError # Issue 30552
 nested_generic_closure_test: CompileTimeError
 override_inheritance_field_test/42: CompileTimeError
 part_of_multiple_libs_test/01: MissingCompileTimeError
@@ -122,7 +119,6 @@
 regress_29405_test: CompileTimeError # Issue 29421
 regress_29784_test/02: Crash # assert initializers not implemented
 regress_29784_test/02: MissingCompileTimeError
-regress_30121_test: CompileTimeError # Issue 31087
 regress_30339_test: CompileTimeError # As expected. Should we make this a multi test?
 regress_33479_test/01: Crash # Issue #33479
 set_literals/*: Skip
@@ -130,9 +126,7 @@
 setter3_test/02: CompileTimeError # Invalid test, see https://github.com/dart-lang/sdk/issues/33837
 stacktrace_test: RuntimeError # Issue 29920
 super_bound_closure_test/none: CompileTimeError
-super_no_such_method1_test: CompileTimeError # Invalid test, probably, see https://github.com/dart-lang/sdk/issues/33963
-super_no_such_method2_test: CompileTimeError # Invalid test, probably, see https://github.com/dart-lang/sdk/issues/33963
-super_no_such_method3_test: CompileTimeError # Invalid test, probably, see https://github.com/dart-lang/sdk/issues/33963
+super_call4_test/01: MissingCompileTimeError
 super_operator_index5_test: RuntimeError # 33470
 super_operator_index7_test: RuntimeError # 33470
 super_operator_index8_test: RuntimeError # 33470
diff --git a/tools/FAKE_COMMITS b/tools/FAKE_COMMITS
index fbe07a6..14748a9 100644
--- a/tools/FAKE_COMMITS
+++ b/tools/FAKE_COMMITS
@@ -24,3 +24,6 @@
 Trigger mirroring of github repository
 Force build after DEPS format revert
 Force build while trybots are broken, to check builders for brokenness.
+
+Analyzer branch commits:
+Force build on new analyzer-branch linux build with new workflow
\ No newline at end of file
diff --git a/tools/bots/test_matrix.json b/tools/bots/test_matrix.json
index b2d6139..e2ac026 100644
--- a/tools/bots/test_matrix.json
+++ b/tools/bots/test_matrix.json
@@ -1375,7 +1375,11 @@
       "builders": [
         "analyzer-linux-release",
         "analyzer-mac-release",
-        "analyzer-win-release"
+        "analyzer-win-release",
+        "analyzer-linux-release-analyzer",
+        "analyzer-linux-release-analyzer-new",
+        "analyzer-mac-release-analyzer",
+        "analyzer-win-release-analyzer"
       ],
       "meta": {
         "description": "This configuration is used by the analyzer builders."
@@ -1440,7 +1444,10 @@
       ]
     },
     {
-      "builders": ["analyzer-analysis-server-linux"],
+      "builders": [
+        "analyzer-analysis-server-linux",
+        "analyzer-analysis-server-linux-analyzer"
+      ],
       "meta": {
         "description": "Analyze analyzer related packages."
       },
diff --git a/tools/testing/dart/options.dart b/tools/testing/dart/options.dart
index 7bd82b8..e9b648c 100644
--- a/tools/testing/dart/options.dart
+++ b/tools/testing/dart/options.dart
@@ -634,7 +634,7 @@
         // Expand compilers.
         for (var compiler in compilers) {
           // Expand modes.
-          String modes = data["mode"] ?? compiler.defaultMode.name;
+          String modes = (data["mode"] as String) ?? compiler.defaultMode.name;
           if (modes == "all") modes = "debug,release,product";
           for (var modeName in modes.split(",")) {
             var mode = Mode.find(modeName);
diff --git a/tools/testing/dart/test_suite.dart b/tools/testing/dart/test_suite.dart
index 0666aff..cb2ca1e 100644
--- a/tools/testing/dart/test_suite.dart
+++ b/tools/testing/dart/test_suite.dart
@@ -896,7 +896,7 @@
             compilationArtifact);
 
     Map<String, String> environment = environmentOverrides;
-    Map<String, String> extraEnv = info.optionsFromFile['environment'];
+    var extraEnv = info.optionsFromFile['environment'] as Map<String, String>;
     if (extraEnv != null) {
       environment = new Map.from(environment)..addAll(extraEnv);
     }