Small improvements for indexing NameElements.

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 86 matching lines @@
     return context.getElement(location);
   }
 
   /**
    * Returns a unique integer that corresponds to the given [Element].
    *
    * If [forKey] is `true` then [element] is a part of a key, so it should use
    * file paths instead of [Element] location URIs.
    */
   int encode(Element element, bool forKey) {
+    if (element is NameElement) {
+      String name = element.name;
+      int nameId = _stringCodec.encode(name);
+      return _encodePath(<int>[nameId]);
+    }
+    // check the location has a cached id
     ElementLocationImpl location = element.location;
-    // check the location has a cached id
     if (!identical(location.indexOwner, this)) {
       location.indexKeyId = null;
       location.indexLocationId = null;
     }
     if (forKey) {
       int id = location.indexKeyId;
       if (id != null) {
         return id;
       }
     } else {
@@ skipping 188 matching lines @@
   int encode(String name) {
     int index = nameToIndex[name];
     if (index == null) {
       index = _indexToName.length;
       nameToIndex[name] = index;
       _indexToName.add(name);
     }
     return index;
   }
 }