Index EnumDeclaration definitions as top-level elements.

pkg/analysis_server/lib/src/services/index/index_contributor.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.index_contributor;
 
 import 'dart:collection' show Queue;
 
 import 'package:analysis_server/src/services/correction/namespace.dart';
 import 'package:analysis_server/src/services/index/index.dart';
@@ skipping 403 matching lines @@
           }
         }
       }
       return super.visitClassDeclaration(node);
     } finally {
       _exitScope();
     }
   }
 
   @override
+  Object visitEnumDeclaration(EnumDeclaration node) {
+    ClassElement element = node.element;
+    enterScope(element);
+    try {
+      _recordElementDefinition(element);
+      return super.visitEnumDeclaration(node);
+    } finally {
+      _exitScope();
+    }
+  }
+
+  @override
   Object visitClassTypeAlias(ClassTypeAlias node) {
     ClassElement element = node.element;
     enterScope(element);
     try {
       _recordElementDefinition(element);
       {
         TypeName superclassNode = node.superclass;
         if (superclassNode != null) {
           _recordSuperType(superclassNode, IndexConstants.IS_EXTENDED_BY);
         }
@@ skipping 600 matching lines @@
   }
 
   /**
    * @return `true` if given "node" is part of [PrefixedIdentifier] "prefix.node".
    */
   static bool _isIdentifierInPrefixedIdentifier(SimpleIdentifier node) {
     AstNode parent = node.parent;
     return parent is PrefixedIdentifier && parent.identifier == node;
   }
 }