| // 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 analysis_server.edit.assist.assist_dart; |
| |
| import 'package:analysis_server/edit/assist/assist_core.dart'; |
| import 'package:analyzer/src/generated/ast.dart'; |
| import 'package:analyzer/src/generated/engine.dart'; |
| import 'package:analyzer/src/generated/source.dart'; |
| |
| /** |
| * An [AssistContributor] that can be used to contribute assists for Dart |
| * files. |
| * |
| * Clients are expected to extend this class when implementing plugins. |
| */ |
| abstract class DartAssistContributor extends AssistContributor { |
| @override |
| List<Assist> computeAssists( |
| AnalysisContext context, Source source, int offset, int length) { |
| if (!AnalysisEngine.isDartFileName(source.fullName)) { |
| return Assist.EMPTY_LIST; |
| } |
| List<Source> libraries = context.getLibrariesContaining(source); |
| if (libraries.isEmpty) { |
| return Assist.EMPTY_LIST; |
| } |
| CompilationUnit unit = |
| context.resolveCompilationUnit2(source, libraries[0]); |
| if (unit == null) { |
| return Assist.EMPTY_LIST; |
| } |
| return internalComputeAssists(unit, offset, length); |
| } |
| |
| /** |
| * Return a list of assists for a location in the given [source]. The location |
| * is specified by the [offset] and [length] of the selected region. The |
| * [context] can be used to get additional information that is useful for |
| * computing assists. |
| */ |
| List<Assist> internalComputeAssists( |
| CompilationUnit unit, int offset, int length); |
| } |