Move Index and IndexStore implementations into Engine.

pkg/analyzer/lib/src/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 index.store.codec;
+library engine.src.index.store.codec;
 
 import 'dart:collection';
 
-import 'package:analysis_server/src/index/store/collection.dart';
+import 'package:analyzer/index/index.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/index.dart';
+import 'package:analyzer/src/index/store/collection.dart';
 
 
 /**
  * A helper that encodes/decodes [AnalysisContext]s from/to integers.
  */
 class ContextCodec {
   /**
    * A table mapping contexts to their unique indices.
    */
   Map<AnalysisContext, int> _contextToIndex = new HashMap<AnalysisContext, int>(
@@ skipping 37 matching lines @@
       _indexToContext.remove(id);
     }
   }
 }
 
 
 /**
  * A helper that encodes/decodes [Element]s to/from integers.
  */
 class ElementCodec {
-  /**
-   * A list that works as a mapping of integers to element encodings (in form of integer arrays).
-   */
-  List<List<int>> _indexToPath = [];
+  final StringCodec _stringCodec;
 
   /**
-   * A table mapping element locations (in form of integer arrays) into a single integer.
+   * A table mapping element encodings to a single integer.
    */
-  IntArrayToIntMap _pathToIndex = new IntArrayToIntMap();
+  final IntArrayToIntMap _pathToIndex = new IntArrayToIntMap();
 
-  final StringCodec _stringCodec;
+  /**
+   * A list that works as a mapping of integers to element encodings.
+   */
+  final List<List<int>> _indexToPath = <List<int>>[];
 
   ElementCodec(this._stringCodec);
 
   /**
    * Returns an [Element] that corresponds to the given location.
    *
    * @param context the [AnalysisContext] to find [Element] in
    * @param index an integer corresponding to the [Element]
    * @return the [Element] or `null`
    */
@@ skipping 91 matching lines @@
 }
 
 
 /**
  * A helper that encodes/decodes [String]s from/to integers.
  */
 class StringCodec {
   /**
    * A table mapping names to their unique indices.
    */
-  final Map<String, int> nameToIndex = {};
+  final Map<String, int> nameToIndex = new HashMap<String, int>();
 
   /**
    * A table mapping indices to the corresponding strings.
    */
-  List<String> _indexToName = [];
+  final List<String> _indexToName = <String>[];
 
   /**
    * Returns the [String] that corresponds to the given index.
    */
   String decode(int index) => _indexToName[index];
 
   /**
    * Returns an unique index for the given [String].
    */
   int encode(String name) {
     int index = nameToIndex[name];
     if (index == null) {
       index = _indexToName.length;
       nameToIndex[name] = index;
       _indexToName.add(name);
     }
     return index;
   }
 }