Support serialization of WorldImpact

pkg/compiler/lib/src/universe/selector.dart

 // Copyright (c) 2015, 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.selector;
 
 import '../common.dart';
 import '../common/names.dart' show
     Names;
 import '../elements/elements.dart' show
@@ skipping 16 matching lines @@
   final String name;
   final int hashCode;
   const SelectorKind(this.name, this.hashCode);
 
   static const SelectorKind GETTER = const SelectorKind('getter', 0);
   static const SelectorKind SETTER = const SelectorKind('setter', 1);
   static const SelectorKind CALL = const SelectorKind('call', 2);
   static const SelectorKind OPERATOR = const SelectorKind('operator', 3);
   static const SelectorKind INDEX = const SelectorKind('index', 4);
 
+  int get index => hashCode;
+
   String toString() => name;
+
+  static List<SelectorKind> values =
+      const <SelectorKind>[GETTER, SETTER, CALL, OPERATOR, INDEX];
 }
 
 class Selector {
   final SelectorKind kind;
   final Name memberName;
   final CallStructure callStructure;
 
   final int hashCode;
 
   int get argumentCount => callStructure.argumentCount;
@@ skipping 225 matching lines @@
     // Add bits from the call structure.
     return Hashing.mixHashCodeBits(hash, callStructure.hashCode);
   }
 
   String toString() {
     return 'Selector($kind, $name, ${callStructure.structureToString()})';
   }
 
   Selector toCallSelector() => new Selector.callClosureFrom(this);
 }