rename fasta.Token.value --> lexeme

pkg/compiler/lib/src/tree/prettyprint.dart

 // Copyright (c) 2012, 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.
 
 import 'package:front_end/src/fasta/scanner.dart' show Token;
 import '../util/util.dart';
 import 'nodes.dart';
 
 /**
  * Pretty-prints Node tree in XML-like format.
  *
  * TODO(smok): Add main() to run from command-line to print out tree for given
  * .dart file.
  */
 class PrettyPrinter extends Indentation with Tagging<Node> implements Visitor {
   @override
   void addDefaultParameters(Node node, Map params) {
     params['getBeginToken'] = tokenToStringOrNull(node.getBeginToken());
     params['getEndToken'] = tokenToStringOrNull(node.getEndToken());
   }
 
   String valueToString(var value) {
     if (value is Token) {
-      return value.value;
+      return value.lexeme;
     }
     return value;
   }
 
   /**
    * Pretty-prints given node tree into string.
    */
   static String prettyPrint(Node node) {
     var p = new PrettyPrinter();
     node.accept(p);
@@ skipping 446 matching lines @@
   }
 
   visitTypeAnnotation(TypeAnnotation node) {
     unimplemented('visitNode', node: node);
   }
 
   unimplemented(String message, {Node node}) {
     throw message;
   }
 }