Use the NavigationCollector from analyzer_plugin to avoid duplication

pkg/analysis_server/lib/src/domains/analysis/navigation.dart

Index: pkg/analysis_server/lib/src/domains/analysis/navigation.dart
diff --git a/pkg/analysis_server/lib/src/domains/analysis/navigation.dart b/pkg/analysis_server/lib/src/domains/analysis/navigation.dart
deleted file mode 100644
index 8459dff590f9d0c30a14e8c36b06dc4c9b719481..0000000000000000000000000000000000000000
--- a/pkg/analysis_server/lib/src/domains/analysis/navigation.dart
+++ /dev/null
@@ -1,92 +0,0 @@
-// 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 'dart:collection';
-
-import 'package:analysis_server/plugin/analysis/navigation/navigation_core.dart';
-import 'package:analysis_server/src/collections.dart';
-import 'package:analysis_server/src/protocol_server.dart' as protocol;
-import 'package:analyzer/src/generated/source.dart' show SourceRange;
-
-/**
- * A concrete implementation of  [NavigationCollector].
- */
-class NavigationCollectorImpl implements NavigationCollector {
-  /**
-   * A list of navigation regions.
-   */
-  final List<protocol.NavigationRegion> regions = <protocol.NavigationRegion>[];
-  final Map<SourceRange, List<int>> regionMap =
-      new HashMap<SourceRange, List<int>>();
-
-  /**
-   * All the unique targets referenced by [regions].
-   */
-  final List<protocol.NavigationTarget> targets = <protocol.NavigationTarget>[];
-  final Map<Pair<protocol.ElementKind, protocol.Location>, int> targetMap =
-      new HashMap<Pair<protocol.ElementKind, protocol.Location>, int>();
-
-  /**
-   * All the unique files referenced by [targets].
-   */
-  final List<String> files = <String>[];
-  final Map<String, int> fileMap = new HashMap<String, int>();
-
-  @override
-  void addRegion(int offset, int length, protocol.ElementKind targetKind,
-      protocol.Location targetLocation) {
-    SourceRange range = new SourceRange(offset, length);
-    // prepare targets
-    List<int> targets = regionMap[range];
-    if (targets == null) {
-      targets = <int>[];
-      regionMap[range] = targets;
-    }
-    // add new target
-    int targetIndex = _addTarget(targetKind, targetLocation);
-    targets.add(targetIndex);
-  }
-
-  void createRegions() {
-    regionMap.forEach((range, targets) {
-      protocol.NavigationRegion region =
-          new protocol.NavigationRegion(range.offset, range.length, targets);
-      regions.add(region);
-    });
-    regions.sort((a, b) {
-      return a.offset - b.offset;
-    });
-  }
-
-  int _addFile(String file) {
-    int index = fileMap[file];
-    if (index == null) {
-      index = files.length;
-      files.add(file);
-      fileMap[file] = index;
-    }
-    return index;
-  }
-
-  int _addTarget(protocol.ElementKind kind, protocol.Location location) {
-    var pair =
-        new Pair<protocol.ElementKind, protocol.Location>(kind, location);
-    int index = targetMap[pair];
-    if (index == null) {
-      String file = location.file;
-      int fileIndex = _addFile(file);
-      index = targets.length;
-      protocol.NavigationTarget target = new protocol.NavigationTarget(
-          kind,
-          fileIndex,
-          location.offset,
-          location.length,
-          location.startLine,
-          location.startColumn);
-      targets.add(target);
-      targetMap[pair] = index;
-    }
-    return index;
-  }
-}