| // 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/provisional/completion/dart/completion_dart.dart'; |
| import 'package:analysis_server/src/services/completion/dart/suggestion_builder.dart'; |
| |
| import '../../../protocol_server.dart' |
| show CompletionSuggestion, CompletionSuggestionKind; |
| |
| /// A contributor that produces suggestions based on the prefixes defined on |
| /// import directives. |
| class LibraryPrefixContributor extends DartCompletionContributor { |
| @override |
| Future<List<CompletionSuggestion>> computeSuggestions( |
| DartCompletionRequest request, SuggestionBuilder builder) async { |
| if (!request.includeIdentifiers) { |
| return const <CompletionSuggestion>[]; |
| } |
| |
| var imports = request.libraryElement.imports; |
| if (imports == null) { |
| return const <CompletionSuggestion>[]; |
| } |
| |
| // TODO(brianwilkerson) The code below will result in duplication if two or |
| // more imports use the same prefix. Might not be worth fixing. The one |
| // potential complication is if the library is displayed with the prefix, |
| // in which case not having one per library could be confusing. |
| var useNewRelevance = request.useNewRelevance; |
| var suggestions = <CompletionSuggestion>[]; |
| for (var element in imports) { |
| var completion = element.prefix?.name; |
| if (completion != null && completion.isNotEmpty) { |
| var libraryElement = element.importedLibrary; |
| if (libraryElement != null) { |
| var relevance = useNewRelevance |
| ? Relevance.prefix |
| : (libraryElement.hasDeprecated |
| ? DART_RELEVANCE_LOW |
| : DART_RELEVANCE_DEFAULT); |
| var suggestion = createSuggestion(request, libraryElement, |
| completion: completion, |
| kind: CompletionSuggestionKind.IDENTIFIER, |
| relevance: relevance); |
| if (suggestion != null) { |
| suggestions.add(suggestion); |
| } |
| } |
| } |
| } |
| return suggestions; |
| } |
| } |