| // 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 domains.analysis.occurrences; |
| |
| import 'package:analysis_server/plugin/analysis/occurrences/occurrences_core.dart'; |
| import 'package:analysis_server/src/analysis_server.dart'; |
| import 'package:analysis_server/src/protocol_server.dart' as protocol; |
| import 'package:analyzer/exception/exception.dart'; |
| import 'package:analyzer/src/generated/engine.dart' |
| show AnalysisContext, AnalysisEngine; |
| import 'package:analyzer/src/generated/source.dart' show Source; |
| |
| /** |
| * Compute all known occurrences for the given [source]. |
| */ |
| OccurrencesCollectorImpl computeOccurrences( |
| AnalysisServer server, AnalysisContext context, Source source) { |
| OccurrencesCollectorImpl collector = new OccurrencesCollectorImpl(); |
| List<OccurrencesContributor> contributors = |
| server.serverPlugin.occurrencesContributors; |
| for (OccurrencesContributor contributor in contributors) { |
| try { |
| contributor.computeOccurrences(collector, context, source); |
| } catch (exception, stackTrace) { |
| AnalysisEngine.instance.logger.logError( |
| 'Exception from occurrences contributor: ${contributor.runtimeType}', |
| new CaughtException(exception, stackTrace)); |
| } |
| } |
| return collector; |
| } |
| |
| /** |
| * A concrete implementation of [OccurrencesCollector]. |
| */ |
| class OccurrencesCollectorImpl implements OccurrencesCollector { |
| Map<protocol.Element, protocol.Occurrences> elementOccurrences = |
| <protocol.Element, protocol.Occurrences>{}; |
| |
| List<protocol.Occurrences> get allOccurrences { |
| return elementOccurrences.values.toList(); |
| } |
| |
| @override |
| void addOccurrences(protocol.Occurrences current) { |
| protocol.Element element = current.element; |
| protocol.Occurrences existing = elementOccurrences[element]; |
| if (existing != null) { |
| List<int> offsets = _merge(existing.offsets, current.offsets); |
| current = new protocol.Occurrences(element, offsets, existing.length); |
| } |
| elementOccurrences[element] = current; |
| } |
| |
| static List<int> _merge(List<int> a, List<int> b) { |
| return <int>[]..addAll(a)..addAll(b); |
| } |
| } |