| // 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/dart/analysis/results.dart'; |
| import 'package:analyzer/file_system/file_system.dart'; |
| import 'package:analyzer_plugin/protocol/protocol_common.dart'; |
| import 'package:analyzer_plugin/utilities/completion/completion_core.dart'; |
| |
| /// An object that can collect completion suggestions. |
| class CompletionCollectorImpl implements CompletionCollector { |
| /// The length of the region of text that should be replaced by the selected |
| /// completion suggestion. |
| int _length; |
| |
| /// The offset of the region of text that should be replaced by the selected |
| /// completion suggestion. |
| int _offset; |
| |
| /// A list of the completion suggestions that have been collected. |
| List<CompletionSuggestion> suggestions = <CompletionSuggestion>[]; |
| |
| /// Initialize a newly created completion collector. |
| CompletionCollectorImpl(); |
| |
| /// Return the length of the region of text that should be replaced by the |
| /// selected completion suggestion, or `null` if the length has not been set. |
| int get length => _length; |
| |
| @override |
| set length(int length) { |
| if (_length != null) { |
| throw StateError('The length can only be set once'); |
| } |
| _length = length; |
| } |
| |
| /// Return the offset of the region of text that should be replaced by the |
| /// selected completion suggestion, or `null` if the offset has not been set. |
| int get offset => _offset; |
| |
| @override |
| set offset(int length) { |
| if (_offset != null) { |
| throw StateError('The offset can only be set once'); |
| } |
| _offset = length; |
| } |
| |
| @override |
| bool get offsetIsSet => offset != null; |
| |
| @override |
| int get suggestionsLength => suggestions.length; |
| |
| @override |
| void addSuggestion(CompletionSuggestion suggestion) { |
| suggestions.add(suggestion); |
| } |
| } |
| |
| /// A concrete implementation of [DartCompletionRequest]. |
| class DartCompletionRequestImpl implements DartCompletionRequest { |
| @override |
| final ResourceProvider resourceProvider; |
| |
| @override |
| final int offset; |
| |
| @override |
| final ResolvedUnitResult result; |
| |
| /// A flag indicating whether completion has been aborted. |
| bool _aborted = false; |
| |
| /// Initialize a newly created request. |
| DartCompletionRequestImpl(this.resourceProvider, this.offset, this.result); |
| |
| /// Abort the current completion request. |
| void abort() { |
| _aborted = true; |
| } |
| |
| @override |
| void checkAborted() { |
| if (_aborted) { |
| throw AbortCompletion(); |
| } |
| } |
| } |