| // 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. |
| |
| library fasta.kernel_library_builder; |
| |
| import 'package:front_end/src/scanner/token.dart' show Token; |
| |
| import 'package:kernel/ast.dart'; |
| |
| import 'package:kernel/clone.dart' show CloneVisitor; |
| |
| import '../deprecated_problems.dart' show deprecated_internalProblem; |
| |
| import '../loader.dart' show Loader; |
| |
| import '../modifier.dart' |
| show abstractMask, namedMixinApplicationMask, staticMask; |
| |
| import '../source/source_library_builder.dart' |
| show DeclarationBuilder, SourceLibraryBuilder; |
| |
| import '../source/source_class_builder.dart' show SourceClassBuilder; |
| |
| import '../util/relativize.dart' show relativizeUri; |
| |
| import 'kernel_builder.dart' |
| show |
| deprecated_AccessErrorBuilder, |
| Builder, |
| BuiltinTypeBuilder, |
| ClassBuilder, |
| ConstructorReferenceBuilder, |
| FormalParameterBuilder, |
| InvalidTypeBuilder, |
| KernelConstructorBuilder, |
| KernelEnumBuilder, |
| KernelFieldBuilder, |
| KernelFormalParameterBuilder, |
| KernelFunctionTypeAliasBuilder, |
| KernelFunctionTypeBuilder, |
| KernelInvalidTypeBuilder, |
| KernelMixinApplicationBuilder, |
| KernelNamedTypeBuilder, |
| KernelProcedureBuilder, |
| KernelTypeBuilder, |
| KernelTypeVariableBuilder, |
| LibraryBuilder, |
| MemberBuilder, |
| MetadataBuilder, |
| NamedTypeBuilder, |
| PrefixBuilder, |
| ProcedureBuilder, |
| Scope, |
| TypeBuilder, |
| TypeVariableBuilder, |
| compareProcedures; |
| |
| class KernelLibraryBuilder |
| extends SourceLibraryBuilder<KernelTypeBuilder, Library> { |
| final Library library; |
| |
| final bool isPatch; |
| |
| final Map<String, SourceClassBuilder> mixinApplicationClasses = |
| <String, SourceClassBuilder>{}; |
| |
| final List<List> argumentsWithMissingDefaultValues = <List>[]; |
| |
| final List<KernelProcedureBuilder> nativeMethods = <KernelProcedureBuilder>[]; |
| |
| final List<KernelTypeVariableBuilder> boundlessTypeVariables = |
| <KernelTypeVariableBuilder>[]; |
| |
| KernelLibraryBuilder(Uri uri, Uri fileUri, Loader loader, this.isPatch) |
| : library = new Library(uri, fileUri: relativizeUri(fileUri)), |
| super(loader, fileUri); |
| |
| Library get target => library; |
| |
| Uri get uri => library.importUri; |
| |
| KernelTypeBuilder addNamedType( |
| String name, List<KernelTypeBuilder> arguments, int charOffset) { |
| return addType( |
| new KernelNamedTypeBuilder(name, arguments, charOffset, fileUri)); |
| } |
| |
| KernelTypeBuilder addMixinApplication(KernelTypeBuilder supertype, |
| List<KernelTypeBuilder> mixins, int charOffset) { |
| KernelTypeBuilder type = new KernelMixinApplicationBuilder( |
| supertype, mixins, this, charOffset, fileUri); |
| return addType(type); |
| } |
| |
| KernelTypeBuilder addVoidType(int charOffset) { |
| return addNamedType("void", null, charOffset); |
| } |
| |
| void addClass( |
| List<MetadataBuilder> metadata, |
| int modifiers, |
| String className, |
| List<TypeVariableBuilder> typeVariables, |
| KernelTypeBuilder supertype, |
| List<KernelTypeBuilder> interfaces, |
| int charOffset) { |
| // Nested declaration began in `OutlineBuilder.beginClassDeclaration`. |
| var declaration = endNestedDeclaration(className) |
| ..resolveTypes(typeVariables, this); |
| assert(declaration.parent == libraryDeclaration); |
| Map<String, MemberBuilder> members = declaration.members; |
| Map<String, MemberBuilder> constructors = declaration.constructors; |
| Map<String, MemberBuilder> setters = declaration.setters; |
| |
| Scope classScope = new Scope( |
| members, setters, scope.withTypeVariables(typeVariables), |
| isModifiable: false); |
| |
| // When looking up a constructor, we don't consider type variables or the |
| // library scope. |
| Scope constructorScope = |
| new Scope(constructors, null, null, isModifiable: false); |
| ClassBuilder cls = new SourceClassBuilder( |
| metadata, |
| modifiers, |
| className, |
| typeVariables, |
| applyMixins(supertype, |
| subclassName: className, typeVariables: typeVariables), |
| interfaces, |
| classScope, |
| constructorScope, |
| this, |
| new List<ConstructorReferenceBuilder>.from(constructorReferences), |
| charOffset); |
| constructorReferences.clear(); |
| Map<String, TypeVariableBuilder> typeVariablesByName = |
| checkTypeVariables(typeVariables, cls); |
| void setParent(String name, MemberBuilder member) { |
| while (member != null) { |
| member.parent = cls; |
| member = member.next; |
| } |
| } |
| |
| void setParentAndCheckConflicts(String name, MemberBuilder member) { |
| if (typeVariablesByName != null) { |
| TypeVariableBuilder tv = typeVariablesByName[name]; |
| if (tv != null) { |
| cls.deprecated_addCompileTimeError( |
| member.charOffset, "Conflict with type variable '$name'."); |
| cls.deprecated_addCompileTimeError( |
| tv.charOffset, "This is the type variable."); |
| } |
| } |
| setParent(name, member); |
| } |
| |
| members.forEach(setParentAndCheckConflicts); |
| constructors.forEach(setParentAndCheckConflicts); |
| // Formally, a setter has the name `id=`, so it can never conflict with a |
| // type variable. |
| setters.forEach(setParent); |
| addBuilder(className, cls, charOffset); |
| } |
| |
| Map<String, TypeVariableBuilder> checkTypeVariables( |
| List<TypeVariableBuilder> typeVariables, Builder owner) { |
| if (typeVariables?.isEmpty ?? true) return null; |
| Map<String, TypeVariableBuilder> typeVariablesByName = |
| <String, TypeVariableBuilder>{}; |
| for (TypeVariableBuilder tv in typeVariables) { |
| TypeVariableBuilder existing = typeVariablesByName[tv.name]; |
| if (existing != null) { |
| deprecated_addCompileTimeError(tv.charOffset, |
| "A type variable can't have the same name as another."); |
| deprecated_addCompileTimeError( |
| existing.charOffset, "The other type variable named '${tv.name}'."); |
| } else { |
| typeVariablesByName[tv.name] = tv; |
| if (owner is ClassBuilder) { |
| // Only classes and type variables can't have the same name. See |
| // [#29555](https://github.com/dart-lang/sdk/issues/29555). |
| if (tv.name == owner.name) { |
| deprecated_addCompileTimeError( |
| tv.charOffset, |
| "A type variable can't have the same name as its enclosing " |
| "declaration."); |
| } |
| } |
| } |
| } |
| return typeVariablesByName; |
| } |
| |
| KernelTypeBuilder applyMixin( |
| KernelTypeBuilder supertype, KernelTypeBuilder mixin, String signature, |
| {List<MetadataBuilder> metadata, |
| String name, |
| List<TypeVariableBuilder> typeVariables, |
| int modifiers: abstractMask, |
| List<KernelTypeBuilder> interfaces, |
| int charOffset: -1}) { |
| var constructors = <String, MemberBuilder>{}; |
| bool isNamed = name != null; |
| SourceClassBuilder builder; |
| if (isNamed) { |
| modifiers |= namedMixinApplicationMask; |
| } else { |
| name = supertype.name; |
| int index = name.indexOf("^"); |
| if (index != -1) { |
| name = name.substring(0, index); |
| } |
| name = "$name&${mixin.name}$signature"; |
| builder = mixinApplicationClasses[name]; |
| } |
| if (builder == null) { |
| builder = new SourceClassBuilder( |
| metadata, |
| modifiers, |
| name, |
| typeVariables, |
| supertype, |
| interfaces, |
| new Scope(<String, MemberBuilder>{}, <String, MemberBuilder>{}, |
| scope.withTypeVariables(typeVariables), |
| isModifiable: false), |
| new Scope(constructors, null, null, isModifiable: false), |
| this, |
| <ConstructorReferenceBuilder>[], |
| charOffset, |
| null, |
| mixin); |
| addBuilder(name, builder, charOffset); |
| if (!isNamed) { |
| mixinApplicationClasses[name] = builder; |
| } |
| } |
| return addNamedType(name, <KernelTypeBuilder>[], charOffset) |
| ..bind(isNamed ? builder : null); |
| } |
| |
| KernelTypeBuilder applyMixins(KernelTypeBuilder type, |
| {List<MetadataBuilder> metadata, |
| String name, |
| String subclassName, |
| List<TypeVariableBuilder> typeVariables, |
| int modifiers: abstractMask, |
| List<KernelTypeBuilder> interfaces, |
| int charOffset: -1}) { |
| if (type is KernelMixinApplicationBuilder) { |
| subclassName ??= name; |
| List<List<String>> signatureParts = <List<String>>[]; |
| Map<String, String> unresolved = <String, String>{}; |
| Map<String, String> unresolvedReversed = <String, String>{}; |
| int unresolvedCount = 0; |
| Map<String, TypeBuilder> freeTypes = <String, TypeBuilder>{}; |
| |
| if (name == null || type.mixins.length != 1) { |
| TypeBuilder last = type.mixins.last; |
| |
| /// Compute a signature of the type arguments used by the supertype and |
| /// mixins. These types are free variables. At this point we can't |
| /// trust that the number of type arguments match the type parameters, |
| /// so we also need to be able to detect missing type arguments. To do |
| /// so, we separate each list of type arguments by `^` and type |
| /// arguments by `&`. For example, the mixin `C<S> with M<T, U>` would |
| /// look like this: |
| /// |
| /// ^#U0^#U1&#U2 |
| /// |
| /// Where `#U0`, `#U1`, and `#U2` are the free variables arising from |
| /// `S`, `T`, and `U` respectively. |
| /// |
| /// As we can resolve any type parameters used at this point, those are |
| /// named `#T0` and so forth. This reduces the number of free variables |
| /// which is crucial for memory usage and the Dart VM's bootstrap |
| /// sequence. |
| /// |
| /// For example, consider this use of mixin applications: |
| /// |
| /// class _InternalLinkedHashMap<K, V> extends _HashVMBase |
| /// with |
| /// MapMixin<K, V>, |
| /// _LinkedHashMapMixin<K, V>, |
| /// _HashBase, |
| /// _OperatorEqualsAndHashCode {} |
| /// |
| /// In this case, only two variables are free, and we produce this |
| /// signature: `^^#T0&#T1^#T0&#T1^^`. Assume another class uses the |
| /// sames mixins but with missing type arguments for `MapMixin`, its |
| /// signature would be: `^^^#T0&#T1^^`. |
| /// |
| /// Note that we do not need to compute a signature for a named mixin |
| /// application with only one mixin as we don't have to invent a name |
| /// for any classes in this situation. |
| void analyzeArguments(TypeBuilder type) { |
| if (name != null && type == last) { |
| // The last mixin of a named mixin application doesn't contribute |
| // to free variables. |
| return; |
| } |
| if (type is NamedTypeBuilder) { |
| List<String> part = <String>[]; |
| for (int i = 0; i < (type.arguments?.length ?? 0); i++) { |
| var argument = type.arguments[i]; |
| String name; |
| if (argument is NamedTypeBuilder) { |
| if (argument.builder != null) { |
| int index = typeVariables?.indexOf(argument.builder) ?? -1; |
| if (index != -1) { |
| name = "#T${index}"; |
| } |
| } else if (argument.arguments == null) { |
| name = unresolved[argument.name] ??= "#U${unresolvedCount++}"; |
| } |
| } |
| name ??= "#U${unresolvedCount++}"; |
| unresolvedReversed[name] = argument.name; |
| freeTypes[name] = argument; |
| part.add(name); |
| type.arguments[i] = |
| new KernelNamedTypeBuilder(name, null, -1, fileUri); |
| } |
| signatureParts.add(part); |
| } |
| } |
| |
| analyzeArguments(type.supertype); |
| type.mixins.forEach(analyzeArguments); |
| } |
| KernelTypeBuilder supertype = type.supertype; |
| List<List<String>> currentSignatureParts = <List<String>>[]; |
| int currentSignatureCount = 0; |
| String computeSignature() { |
| if (freeTypes.isEmpty) return ""; |
| currentSignatureParts.add(signatureParts[currentSignatureCount++]); |
| if (currentSignatureParts.any((l) => l.isNotEmpty)) { |
| return "^${currentSignatureParts.map((l) => l.join('&')).join('^')}"; |
| } else { |
| return ""; |
| } |
| } |
| |
| Map<String, TypeVariableBuilder> computeTypeVariables() { |
| Map<String, TypeVariableBuilder> variables = |
| <String, TypeVariableBuilder>{}; |
| for (List<String> strings in currentSignatureParts) { |
| for (String name in strings) { |
| variables[name] ??= addTypeVariable(name, null, -1); |
| } |
| } |
| return variables; |
| } |
| |
| checkArguments(t) { |
| for (var argument in t.arguments ?? const []) { |
| if (argument.builder == null && argument.name.startsWith("#")) { |
| throw "No builder on ${argument.name}"; |
| } |
| } |
| } |
| |
| computeSignature(); // This combines the supertype with the first mixin. |
| for (int i = 0; i < type.mixins.length - 1; i++) { |
| Set<String> supertypeArguments = new Set<String>(); |
| for (var part in currentSignatureParts) { |
| supertypeArguments.addAll(part); |
| } |
| String signature = computeSignature(); |
| var variables = computeTypeVariables(); |
| if (supertypeArguments.isNotEmpty) { |
| supertype = addNamedType( |
| supertype.name, |
| supertypeArguments |
| .map((n) => addNamedType(n, null, -1)..bind(variables[n])) |
| .toList(), |
| -1); |
| } |
| KernelNamedTypeBuilder mixin = type.mixins[i]; |
| for (var type in mixin.arguments ?? const []) { |
| type.bind(variables[type.name]); |
| } |
| checkArguments(supertype); |
| checkArguments(mixin); |
| supertype = applyMixin(supertype, mixin, signature, |
| typeVariables: |
| new List<TypeVariableBuilder>.from(variables.values)); |
| } |
| KernelNamedTypeBuilder mixin = type.mixins.last; |
| |
| Set<String> supertypeArguments = new Set<String>(); |
| for (var part in currentSignatureParts) { |
| supertypeArguments.addAll(part); |
| } |
| String signature = name == null ? computeSignature() : ""; |
| var variables; |
| if (name == null) { |
| variables = computeTypeVariables(); |
| typeVariables = new List<TypeVariableBuilder>.from(variables.values); |
| if (supertypeArguments.isNotEmpty) { |
| supertype = addNamedType( |
| supertype.name, |
| supertypeArguments |
| .map((n) => addNamedType(n, null, -1)..bind(variables[n])) |
| .toList(), |
| -1); |
| } |
| } else { |
| if (supertypeArguments.isNotEmpty) { |
| supertype = addNamedType(supertype.name, |
| supertypeArguments.map((n) => freeTypes[n]).toList(), -1); |
| } |
| } |
| |
| if (name == null) { |
| for (var type in mixin.arguments ?? const []) { |
| type.bind(variables[type.name]); |
| } |
| } |
| checkArguments(supertype); |
| checkArguments(mixin); |
| |
| KernelNamedTypeBuilder t = applyMixin(supertype, mixin, signature, |
| metadata: metadata, |
| name: name, |
| typeVariables: typeVariables, |
| modifiers: modifiers, |
| interfaces: interfaces, |
| charOffset: charOffset); |
| if (name == null) { |
| var builder = t.builder; |
| t = addNamedType( |
| t.name, freeTypes.keys.map((k) => freeTypes[k]).toList(), -1); |
| if (builder != null) { |
| t.bind(builder); |
| } |
| } |
| return t; |
| } else { |
| return type; |
| } |
| } |
| |
| void addNamedMixinApplication( |
| List<MetadataBuilder> metadata, |
| String name, |
| List<TypeVariableBuilder> typeVariables, |
| int modifiers, |
| KernelTypeBuilder mixinApplication, |
| List<KernelTypeBuilder> interfaces, |
| int charOffset) { |
| // Nested declaration began in `OutlineBuilder.beginNamedMixinApplication`. |
| endNestedDeclaration(name).resolveTypes(typeVariables, this); |
| KernelNamedTypeBuilder supertype = applyMixins(mixinApplication, |
| metadata: metadata, |
| name: name, |
| typeVariables: typeVariables, |
| modifiers: modifiers, |
| interfaces: interfaces, |
| charOffset: charOffset); |
| checkTypeVariables(typeVariables, supertype.builder); |
| } |
| |
| @override |
| void addField( |
| List<MetadataBuilder> metadata, |
| int modifiers, |
| KernelTypeBuilder type, |
| String name, |
| int charOffset, |
| Token initializerTokenForInference, |
| bool hasInitializer) { |
| addBuilder( |
| name, |
| new KernelFieldBuilder(metadata, type, name, modifiers, this, |
| charOffset, initializerTokenForInference, hasInitializer), |
| charOffset); |
| } |
| |
| String computeAndValidateConstructorName(String name, int charOffset) { |
| String className = currentDeclaration.name; |
| bool startsWithClassName = name.startsWith(className); |
| if (startsWithClassName && name.length == className.length) { |
| // Unnamed constructor or factory. |
| return ""; |
| } |
| int index = name.indexOf("."); |
| if (startsWithClassName && index == className.length) { |
| // Named constructor or factory. |
| return name.substring(index + 1); |
| } |
| if (index == -1) { |
| // A legal name for a regular method, but not for a constructor. |
| return null; |
| } |
| String suffix = name.substring(index + 1); |
| deprecated_addCompileTimeError( |
| charOffset, |
| "'$name' isn't a legal method name.\n" |
| "Did you mean '$className.$suffix'?"); |
| return suffix; |
| } |
| |
| void addProcedure( |
| List<MetadataBuilder> metadata, |
| int modifiers, |
| KernelTypeBuilder returnType, |
| String name, |
| List<TypeVariableBuilder> typeVariables, |
| List<FormalParameterBuilder> formals, |
| ProcedureKind kind, |
| int charOffset, |
| int charOpenParenOffset, |
| int charEndOffset, |
| String nativeMethodName, |
| {bool isTopLevel}) { |
| // Nested declaration began in `OutlineBuilder.beginMethod` or |
| // `OutlineBuilder.beginTopLevelMethod`. |
| endNestedDeclaration(name).resolveTypes(typeVariables, this); |
| ProcedureBuilder procedure; |
| String constructorName = |
| isTopLevel ? null : computeAndValidateConstructorName(name, charOffset); |
| if (constructorName != null) { |
| name = constructorName; |
| procedure = new KernelConstructorBuilder( |
| metadata, |
| modifiers & ~abstractMask, |
| returnType, |
| name, |
| typeVariables, |
| formals, |
| this, |
| charOffset, |
| charOpenParenOffset, |
| charEndOffset, |
| nativeMethodName); |
| } else { |
| procedure = new KernelProcedureBuilder( |
| metadata, |
| modifiers, |
| returnType, |
| name, |
| typeVariables, |
| formals, |
| kind, |
| this, |
| charOffset, |
| charOpenParenOffset, |
| charEndOffset, |
| nativeMethodName); |
| } |
| checkTypeVariables(typeVariables, procedure); |
| addBuilder(name, procedure, charOffset); |
| if (nativeMethodName != null) { |
| addNativeMethod(procedure); |
| } |
| } |
| |
| void addFactoryMethod( |
| List<MetadataBuilder> metadata, |
| int modifiers, |
| ConstructorReferenceBuilder constructorNameReference, |
| List<FormalParameterBuilder> formals, |
| ConstructorReferenceBuilder redirectionTarget, |
| int charOffset, |
| int charOpenParenOffset, |
| int charEndOffset, |
| String nativeMethodName) { |
| KernelTypeBuilder returnType = addNamedType( |
| currentDeclaration.parent.name, <KernelTypeBuilder>[], charOffset); |
| // Nested declaration began in `OutlineBuilder.beginFactoryMethod`. |
| DeclarationBuilder<KernelTypeBuilder> factoryDeclaration = |
| endNestedDeclaration("#factory_method"); |
| String name = constructorNameReference.name; |
| String constructorName = |
| computeAndValidateConstructorName(name, charOffset); |
| if (constructorName != null) { |
| name = constructorName; |
| } |
| assert(constructorNameReference.suffix == null); |
| KernelProcedureBuilder procedure = new KernelProcedureBuilder( |
| metadata, |
| staticMask | modifiers, |
| returnType, |
| name, |
| <TypeVariableBuilder>[], |
| formals, |
| ProcedureKind.Factory, |
| this, |
| charOffset, |
| charOpenParenOffset, |
| charEndOffset, |
| nativeMethodName, |
| redirectionTarget); |
| currentDeclaration.addFactoryDeclaration(procedure, factoryDeclaration); |
| addBuilder(name, procedure, charOffset); |
| if (nativeMethodName != null) { |
| addNativeMethod(procedure); |
| } |
| } |
| |
| void addEnum(List<MetadataBuilder> metadata, String name, |
| List<Object> constantNamesAndOffsets, int charOffset, int charEndOffset) { |
| addBuilder( |
| name, |
| new KernelEnumBuilder(metadata, name, constantNamesAndOffsets, this, |
| charOffset, charEndOffset), |
| charOffset); |
| } |
| |
| void addFunctionTypeAlias( |
| List<MetadataBuilder> metadata, |
| String name, |
| List<TypeVariableBuilder> typeVariables, |
| covariant KernelFunctionTypeBuilder type, |
| int charOffset) { |
| KernelFunctionTypeAliasBuilder typedef = new KernelFunctionTypeAliasBuilder( |
| metadata, name, typeVariables, type, this, charOffset); |
| checkTypeVariables(typeVariables, typedef); |
| // Nested declaration began in `OutlineBuilder.beginFunctionTypeAlias`. |
| endNestedDeclaration("#typedef").resolveTypes(typeVariables, this); |
| addBuilder(name, typedef, charOffset); |
| } |
| |
| KernelFunctionTypeBuilder addFunctionType( |
| KernelTypeBuilder returnType, |
| List<TypeVariableBuilder> typeVariables, |
| List<FormalParameterBuilder> formals, |
| int charOffset) { |
| var builder = new KernelFunctionTypeBuilder( |
| charOffset, fileUri, returnType, typeVariables, formals); |
| checkTypeVariables(typeVariables, builder); |
| // Nested declaration began in `OutlineBuilder.beginFunctionType` or |
| // `OutlineBuilder.beginFunctionTypedFormalParameter`. |
| endNestedDeclaration("#function_type").resolveTypes(typeVariables, this); |
| return addType(builder); |
| } |
| |
| KernelFormalParameterBuilder addFormalParameter( |
| List<MetadataBuilder> metadata, |
| int modifiers, |
| KernelTypeBuilder type, |
| String name, |
| bool hasThis, |
| int charOffset) { |
| return new KernelFormalParameterBuilder( |
| metadata, modifiers, type, name, hasThis, this, charOffset); |
| } |
| |
| KernelTypeVariableBuilder addTypeVariable( |
| String name, KernelTypeBuilder bound, int charOffset) { |
| var builder = new KernelTypeVariableBuilder(name, this, charOffset, bound); |
| boundlessTypeVariables.add(builder); |
| return builder; |
| } |
| |
| @override |
| void buildBuilder(Builder builder, LibraryBuilder coreLibrary) { |
| if (builder is SourceClassBuilder) { |
| Class cls = builder.build(this, coreLibrary); |
| library.addClass(cls); |
| } else if (builder is KernelFieldBuilder) { |
| library.addMember(builder.build(this)..isStatic = true); |
| } else if (builder is KernelProcedureBuilder) { |
| library.addMember(builder.build(this)..isStatic = true); |
| } else if (builder is KernelFunctionTypeAliasBuilder) { |
| library.addTypedef(builder.build(this)); |
| } else if (builder is KernelEnumBuilder) { |
| library.addClass(builder.build(this, coreLibrary)); |
| } else if (builder is PrefixBuilder) { |
| // Ignored. Kernel doesn't represent prefixes. |
| } else if (builder is BuiltinTypeBuilder) { |
| // Nothing needed. |
| } else { |
| deprecated_internalProblem("Unhandled builder: ${builder.runtimeType}"); |
| } |
| } |
| |
| @override |
| Library build(LibraryBuilder coreLibrary) { |
| super.build(coreLibrary); |
| library.name = name; |
| library.procedures.sort(compareProcedures); |
| return library; |
| } |
| |
| @override |
| Builder buildAmbiguousBuilder( |
| String name, Builder builder, Builder other, int charOffset, |
| {bool isExport: false, bool isImport: false}) { |
| // TODO(ahe): Can I move this to Scope or Prefix? |
| if (builder == other) return builder; |
| if (builder is InvalidTypeBuilder) return builder; |
| if (other is InvalidTypeBuilder) return other; |
| if (builder is deprecated_AccessErrorBuilder) { |
| deprecated_AccessErrorBuilder error = builder; |
| builder = error.builder; |
| } |
| if (other is deprecated_AccessErrorBuilder) { |
| deprecated_AccessErrorBuilder error = other; |
| other = error.builder; |
| } |
| bool isLocal = false; |
| Builder preferred; |
| Uri uri; |
| Uri otherUri; |
| Uri preferredUri; |
| Uri hiddenUri; |
| if (scope.local[name] == builder) { |
| isLocal = true; |
| preferred = builder; |
| hiddenUri = other.computeLibraryUri(); |
| } else { |
| uri = builder.computeLibraryUri(); |
| otherUri = other.computeLibraryUri(); |
| if (otherUri?.scheme == "dart" && uri?.scheme != "dart") { |
| preferred = builder; |
| preferredUri = uri; |
| hiddenUri = otherUri; |
| } else if (uri?.scheme == "dart" && otherUri?.scheme != "dart") { |
| preferred = other; |
| preferredUri = otherUri; |
| hiddenUri = uri; |
| } |
| } |
| if (preferred != null) { |
| if (isLocal) { |
| if (isExport) { |
| deprecated_addNit(charOffset, |
| "Local definition of '$name' hides export from '${hiddenUri}'."); |
| } else { |
| deprecated_addNit(charOffset, |
| "Local definition of '$name' hides import from '${hiddenUri}'."); |
| } |
| } else { |
| if (isExport) { |
| deprecated_addNit( |
| charOffset, |
| "Export of '$name' (from '${preferredUri}') hides export from " |
| "'${hiddenUri}'."); |
| } else { |
| deprecated_addNit( |
| charOffset, |
| "Import of '$name' (from '${preferredUri}') hides import from " |
| "'${hiddenUri}'."); |
| } |
| } |
| return preferred; |
| } |
| if (builder.next == null && other.next == null) { |
| if (isImport && builder is PrefixBuilder && other is PrefixBuilder) { |
| // Handles the case where the same prefix is used for different |
| // imports. |
| return builder |
| ..exports.merge(other.exports, |
| (String name, Builder existing, Builder member) { |
| return buildAmbiguousBuilder(name, existing, member, charOffset, |
| isExport: isExport, isImport: isImport); |
| }); |
| } |
| } |
| String message = isExport |
| ? "'$name' is exported from both '${uri}' and '${otherUri}'." |
| : "'$name' is imported from both '${uri}' and '${otherUri}'."; |
| deprecated_addNit(charOffset, message); |
| return new KernelInvalidTypeBuilder(name, charOffset, fileUri, message); |
| } |
| |
| int finishStaticInvocations() { |
| CloneVisitor cloner; |
| for (var list in argumentsWithMissingDefaultValues) { |
| final Arguments arguments = list[0]; |
| final FunctionNode function = list[1]; |
| |
| Expression defaultArgumentFrom(Expression expression) { |
| if (expression == null) { |
| return new NullLiteral(); |
| } |
| cloner ??= new CloneVisitor(); |
| return cloner.clone(expression); |
| } |
| |
| for (int i = function.requiredParameterCount; |
| i < function.positionalParameters.length; |
| i++) { |
| arguments.positional[i] ??= |
| defaultArgumentFrom(function.positionalParameters[i].initializer) |
| ..parent = arguments; |
| } |
| Map<String, VariableDeclaration> names; |
| for (NamedExpression expression in arguments.named) { |
| if (expression.value == null) { |
| if (names == null) { |
| names = <String, VariableDeclaration>{}; |
| for (VariableDeclaration parameter in function.namedParameters) { |
| names[parameter.name] = parameter; |
| } |
| } |
| expression.value = |
| defaultArgumentFrom(names[expression.name].initializer) |
| ..parent = expression; |
| } |
| } |
| } |
| return argumentsWithMissingDefaultValues.length; |
| } |
| |
| void addNativeMethod(KernelProcedureBuilder method) { |
| nativeMethods.add(method); |
| } |
| |
| int finishNativeMethods() { |
| for (KernelProcedureBuilder method in nativeMethods) { |
| method.becomeNative(loader); |
| } |
| return nativeMethods.length; |
| } |
| |
| List<TypeVariableBuilder> copyTypeVariables( |
| List<TypeVariableBuilder> original) { |
| List<TypeVariableBuilder> copy = <TypeVariableBuilder>[]; |
| for (KernelTypeVariableBuilder variable in original) { |
| var newVariable = new KernelTypeVariableBuilder( |
| variable.name, this, variable.charOffset); |
| copy.add(newVariable); |
| boundlessTypeVariables.add(newVariable); |
| } |
| Map<TypeVariableBuilder, TypeBuilder> substitution = |
| <TypeVariableBuilder, TypeBuilder>{}; |
| int i = 0; |
| for (KernelTypeVariableBuilder variable in original) { |
| substitution[variable] = copy[i++].asTypeBuilder(); |
| } |
| i = 0; |
| for (KernelTypeVariableBuilder variable in original) { |
| copy[i++].bound = variable.bound?.subst(substitution); |
| } |
| return copy; |
| } |
| |
| int finishTypeVariables(ClassBuilder object) { |
| int count = boundlessTypeVariables.length; |
| for (KernelTypeVariableBuilder builder in boundlessTypeVariables) { |
| builder.finish(this, object); |
| } |
| boundlessTypeVariables.clear(); |
| return count; |
| } |
| |
| @override |
| void includePart(covariant KernelLibraryBuilder part) { |
| part.mixinApplicationClasses |
| .forEach((String name, SourceClassBuilder builder) { |
| SourceClassBuilder existing = |
| mixinApplicationClasses.putIfAbsent(name, () => builder); |
| if (existing != builder) { |
| part.scope.local.remove(name); |
| } |
| }); |
| super.includePart(part); |
| nativeMethods.addAll(part.nativeMethods); |
| boundlessTypeVariables.addAll(part.boundlessTypeVariables); |
| } |
| } |
