Declare IndexableObject.file instead of Source.

pkg/analysis_server/lib/src/services/index/index.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.index;
 
 import 'dart:async';
 
 import 'package:analysis_server/plugin/index/index_core.dart';
 import 'package:analysis_server/src/services/index/indexable_element.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/generated/source.dart';
 
 /**
  * A filter for [Element] names.
  */
 typedef bool ElementNameFilter(String name);
 
 /**
  * The interface [Index] defines the behavior of objects that maintain an index
  * storing relations between indexable objects.
  *
@@ skipping 48 matching lines @@
    * The name to be indexed.
    */
   final String name;
 
   /**
    * Initialize a newly created indexable name to represent the given [name].
    */
   IndexableName(this.name);
 
   @override
+  String get filePath => null;
+
+  @override
   IndexableObjectKind get kind => IndexableNameKind.INSTANCE;
 
   @override
   int get offset {
     return -1;
   }
 
   @override
-  Source get source => null;
-
-  @override
   bool operator ==(Object object) =>
       object is IndexableName && object.name == name;
 
   @override
   String toString() => name;
 }
 
 /**
  * The kind of an indexable name.
  */
@@ skipping 228 matching lines @@
    * A table mapping relationship identifiers to relationships.
    */
   static Map<String, RelationshipImpl> _RELATIONSHIP_MAP = {};
 
   /**
    * The next artificial hash code.
    */
   static int _NEXT_HASH_CODE = 0;
 
   /**
-   * The artifitial hash code for this object.
+   * The artificial hash code for this object.
    */
   final int _hashCode = _NEXT_HASH_CODE++;
 
   /**
    * The unique identifier for this relationship.
    */
   final String identifier;
 
   /**
    * Initialize a newly created relationship with the given unique identifier.
@@ skipping 11 matching lines @@
    */
   static RelationshipImpl getRelationship(String identifier) {
     RelationshipImpl relationship = _RELATIONSHIP_MAP[identifier];
     if (relationship == null) {
       relationship = new RelationshipImpl(identifier);
       _RELATIONSHIP_MAP[identifier] = relationship;
     }
     return relationship;
   }
 }