Clone tokens when cloning ASTs for constants

pkg/analyzer/lib/src/generated/constant.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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.constant;
 
 import 'dart:collection';
@@ skipping 882 matching lines @@
       return true;
     }
     if (type.isUndefined) {
       return false;
     }
     return obj.type.isSubtypeOf(type);
   }
 }
 
 /**
- * [AstCloner] that copies the necessary information from the AST to allow const constructor
- * initializers to be evaluated.
+ * A `ConstantValueComputer_InitializerCloner` is an [AstCloner] that copies the
+ * necessary information from the AST to allow const constructor initializers to
+ * be evaluated.
  */
 class ConstantValueComputer_InitializerCloner extends AstCloner {
+  // TODO(brianwilkerson) Investigate replacing uses of this class with uses of
+  // AstCloner and ResolutionCopier.
+
+  ConstantValueComputer_InitializerCloner() : super(true);
+
   @override
   InstanceCreationExpression visitInstanceCreationExpression(InstanceCreationExpression node) {
     InstanceCreationExpression expression = super.visitInstanceCreationExpression(node);
     expression.evaluationResult = node.evaluationResult;
     return expression;
   }
 
   @override
   SimpleIdentifier visitSimpleIdentifier(SimpleIdentifier node) {
     SimpleIdentifier identifier = super.visitSimpleIdentifier(node);
@@ skipping 3771 matching lines @@
 
   @override
   String get typeName => "Type";
 
   @override
   int get hashCode => _element == null ? 0 : _element.hashCode;
 
   @override
   String toString() => _element == null ? "-unknown-" : _element.name;
 }