| // 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. |
| |
| import 'package:analysis_server/plugin/analysis/occurrences/occurrences_core.dart'; |
| import 'package:analysis_server/src/protocol_server.dart' as protocol; |
| |
| /// A concrete implementation of [OccurrencesCollector]. |
| class OccurrencesCollectorImpl implements OccurrencesCollector { |
| final 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) { |
| var element = current.element; |
| var existing = elementOccurrences[element]; |
| if (existing != null) { |
| var offsets = _merge(existing.offsets, current.offsets); |
| current = protocol.Occurrences(element, offsets, existing.length); |
| } |
| elementOccurrences[element] = current; |
| } |
| |
| static List<int> _merge(List<int> a, List<int> b) { |
| return <int>[...a, ...b]; |
| } |
| } |