Check enums in switch cases.

pkg/compiler/lib/src/resolution/enum_creator.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 dart2js.resolution.enum_creator;
 
 import '../dart_types.dart';
 import '../dart2jslib.dart';
 import '../elements/elements.dart';
 import '../elements/modelx.dart';
@@ skipping 180 matching lines @@
         nameVariable);
 
     FunctionSignatureX constructorSignature = new FunctionSignatureX(
         requiredParameters: builder.linkedList([indexFormal, nameFormal]),
         requiredParameterCount: 2,
         type: new FunctionType(constructor, const VoidType(),
             <DartType>[intType, stringType]));
     constructor.functionSignatureCache = constructorSignature;
     enumClass.addMember(constructor, compiler);
 
+    List<FieldElement> enumValues = <FieldElement>[];
     VariableList variableList = new VariableList(builder.staticConstModifiers);
     variableList.type = enumType;
     int index = 0;
     List<Node> valueReferences = <Node>[];
     for (Link<Node> link = node.names.nodes;
          !link.isEmpty;
          link = link.tail) {
       Identifier name = link.head;
       AstBuilder valueBuilder = new AstBuilder(name.token);
       valueReferences.add(new Send(null, name));
 
       Expression initializer = valueBuilder.newExpression(
           enumClass.name,
           valueBuilder.argumentList([
             valueBuilder.literalInt(index),
             valueBuilder.literalString('${name.source}')
           ]),
           isConst: true);
       SendSet definition = valueBuilder.createDefinition(name, initializer);
 
       EnumFieldElementX field = new EnumFieldElementX(
           name, enumClass, variableList, definition, initializer);
+      enumValues.add(field);
       enumClass.addMember(field, compiler);
       index++;
     }
 
     VariableList valuesVariableList =
         new VariableList(builder.staticConstModifiers);
     InterfaceType listType = compiler.listClass.computeType(compiler);
     valuesVariableList.type = listType.createInstantiation([enumType]);
 
     Identifier valuesIdentifier = builder.identifier('values');
@@ skipping 23 matching lines @@
                     builder.literalString('', prefix: '')))
             ))
         );
 
     EnumMethodElementX toString = new EnumMethodElementX('toString',
         enumClass, Modifiers.EMPTY, toStringNode);
     FunctionSignatureX toStringSignature = new FunctionSignatureX(
         type: new FunctionType(toString, stringType));
     toString.functionSignatureCache = toStringSignature;
     enumClass.addMember(toString, compiler);
+
+    enumClass.enumValues = enumValues;
   }
 }