Expand ResolvedAst to handle synthetic constructors.

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 '../common.dart';
 import '../core_types.dart' show CoreTypes;
 import '../dart_types.dart';
 import '../elements/elements.dart';
@@ skipping 153 matching lines @@
         null, // Type arguments.
         new NodeList(
             symbolToken(Precedence.OPEN_CURLY_BRACKET_INFO),
             linkedList(entries),
             symbolToken(Precedence.CLOSE_CURLY_BRACKET_INFO),
             ','),
         isConst ? keywordToken('const') : null);
   }
 }
 
+/// This class generates the model for an enum class.
+///
+/// For instance
+///
+///     enum A { b, c, }
+///
+/// is modelled as
+///
+///     class A {
+///       final int index;
+///
+///       const A(this.index);
+///
+///       String toString() {
+///         return const <int, A>{0: 'A.b', 1: 'A.c'}[index];
+///       }
+///
+///       static const A b = const A(0);
+///       static const A c = const A(1);
+///
+///       static const List<A> values = const <A>[b, c];
+///     }
+///
 // TODO(johnniwinther): Avoid creating synthesized ASTs for enums when SSA is
 // removed.
 class EnumCreator {
   final DiagnosticReporter reporter;
   final CoreTypes coreTypes;
   final EnumClassElementX enumClass;
 
   EnumCreator(this.reporter, this.coreTypes, this.enumClass);
 
   void createMembers() {
@@ skipping 99 matching lines @@
     EnumMethodElementX toString = new EnumMethodElementX(
         'toString', enumClass, Modifiers.EMPTY, toStringNode);
     FunctionSignatureX toStringSignature =
         new FunctionSignatureX(type: new FunctionType(toString, stringType));
     toString.functionSignature = toStringSignature;
     enumClass.addMember(toString, reporter);
 
     enumClass.enumValues = enumValues;
   }
 }