Make 'class' and 'extends' into real keywords, per language spec 0.06 .

frog/scripts/token_info.py

 # Copyright (c) 2011, 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.
 
 class Token:
   def __init__(self, name, text, precedence, customFinishCode=None,
                stringRepr=None):
     self.name = name
     self.text = text
     self.precedence = precedence
@@ skipping 153 matching lines @@
   ]
 
 # TODO(jimhug): Validate this list with Dart.g and with the lang spec.
 keywords = [
   Keyword('ABSTRACT', "abstract", True),
   Keyword('ASSERT', "assert", True),
   Keyword('AWAIT', "await", False), # experimental feature
   Keyword('BREAK', "break", False),
   Keyword('CASE', "case", False),
   Keyword('CATCH', "catch", False),
-  Keyword('CLASS', "class", True),
+  Keyword('CLASS', "class", False),
   Keyword('CONST', "const", False),
   Keyword('CONTINUE', "continue", False),
   Keyword('DEFAULT', "default", False),
   Keyword('DO', "do", False),
   Keyword('ELSE', "else", False),
-  Keyword('EXTENDS', "extends", True),
+  Keyword('EXTENDS', "extends", False),
   Keyword('FACTORY', "factory", True),
   Keyword('FALSE', "false", False),
   Keyword('FINAL', "final", False),
   Keyword('FINALLY', "finally", False),
   Keyword('FOR', "for", False),
   Keyword('GET', "get", True),
   Keyword('IF', "if", False),
   Keyword('IMPLEMENTS', "implements", True),
   Keyword('IMPORT', "import", True),
   Keyword('IN', "in", False),
@@ skipping 12 matching lines @@
   Keyword('SUPER', "super", False),
   Keyword('SWITCH', "switch", False),
   Keyword('THIS', "this", False),
   Keyword('THROW', "throw", False),
   Keyword('TRUE', "true", False),
   Keyword('TYPEDEF', "typedef", True),
   Keyword('TRY', "try", False),
   Keyword('VAR', "var", False),
   Keyword('VOID', "void", False),
   Keyword('WHILE', "while", False)]