Support for inspecting index.

pkg/analysis_server/lib/src/services/index/store/codec.dart

 // 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.
 
 library services.src.index.store.codec;
 
 import 'dart:collection';
 
 import 'package:analysis_server/src/services/index/index.dart';
 import 'package:analysis_server/src/services/index/store/collection.dart';
@@ skipping 127 matching lines @@
 
   /**
    * Returns an integer that corresponds to an approximated location of [element].
    */
   int encodeHash(Element element) {
     List<int> path = _getLocationPathLimited(element);
     int index = _encodePath(path);
     return index;
   }
 
+  /**
+   * Returns a list with the location components of the element with the
+   * given encoded ID.
+   */
+  List<String> inspect_decodePath(int id) {
+    List<int> path = _indexToPath[id];
+    return _getLocationComponents(path);
+  }
+
+  /**
+   * Returns a map of element IDs to their locations for elements with
+   * the [requiredName].
+   */
+  Map<int, List<String>> inspect_getElements(String requiredName) {
+    Map<int, List<String>> result = <int, List<String>>{};
+    for (int i = 0; i < _indexToPath.length; i++) {
+      List<int> path = _indexToPath[i];
+      int nameIndex = path[path.length - 1];
+      if (nameIndex >= 0) {
+        String name = _stringCodec.decode(nameIndex);
+        if (name == requiredName) {
+          result[i] = path.map(_stringCodec.decode).toList();
+        }
+      }
+    }
+    return result;
+  }
+
   int _encodePath(List<int> path) {
     int index = _pathToIndex[path];
     if (index == null) {
       index = _indexToPath.length;
       _pathToIndex[path] = index;
       _indexToPath.add(path);
     }
     return index;
   }
 
@@ skipping 133 matching lines @@
   int encode(String name) {
     int index = nameToIndex[name];
     if (index == null) {
       index = _indexToName.length;
       nameToIndex[name] = index;
       _indexToName.add(name);
     }
     return index;
   }
 }