Proper handling of built-in identifiers

runtime/vm/token.h

Index: runtime/vm/token.h
===================================================================
--- runtime/vm/token.h	(revision 3272)
+++ runtime/vm/token.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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.
 
@@ -136,7 +136,7 @@
 // to update kFirstKeyword and kLastKeyword below.
 #define DART_KEYWORD_LIST(KW)                                                  \
   KW(kABSTRACT, "abstract", 0, kPseudoKeyword) /* == kFirstKeyword */          \
-  KW(kASSERT, "assert", 0, kKeyword)                                           \
+  KW(kASSERT, "assert", 0, kPseudoKeyword)                                     \
   KW(kBREAK, "break", 0, kKeyword)                                             \
   KW(kCASE, "case", 0, kKeyword)                                               \
   KW(kCATCH, "catch", 0, kKeyword)                                             \
@@ -171,7 +171,7 @@
   KW(kTHROW, "throw", 0, kKeyword)                                             \
   KW(kTRUE, "true", 0, kKeyword)                                               \
   KW(kTRY, "try", 0, kKeyword)                                                 \
-  KW(kTYPEDEF, "typedef", 0, kKeyword)                                         \
+  KW(kTYPEDEF, "typedef", 0, kPseudoKeyword)                                   \
   KW(kVAR, "var", 0, kKeyword)                                                 \
   KW(kVOID, "void", 0, kKeyword)                                               \
   KW(kWHILE, "while", 0, kKeyword) /* == kLastKeyword */
@@ -217,6 +217,10 @@
     return (Attributes(tok) & kPseudoKeyword) != 0;
   }
 
+  static bool IsIdentifier(Kind tok) {
+    return (tok == kIDENT) || IsPseudoKeyword(tok);
+  }
+
   static const char* Name(Kind tok) {
     ASSERT(tok < kNumTokens);
     return name_[tok];