Added macros OBJECT_IMPLEMENTATION and FINAL_OBJECT_IMPLEMENTATION

vm/scanner.cc

 // 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.
 
 #include "vm/scanner.h"
 
 #include "platform/assert.h"
 #include "vm/flags.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
@@ skipping 294 matching lines @@
     if (keywords_[i].keyword_len == ident_length) {
       const char* keyword = keywords_[i].keyword_chars;
       int char_pos = 0;
       while ((char_pos < ident_length) &&
              (keyword[char_pos] == source_.CharAt(ident_pos + char_pos))) {
         char_pos++;
       }
       if (char_pos == ident_length) {
         if (keywords_[i].keyword_symbol == NULL) {
           String& symbol = String::ZoneHandle();
-          symbol |= keyword_symbol_table_.At(i);
+          symbol ^= keyword_symbol_table_.At(i);
           ASSERT(!symbol.IsNull());
           keywords_[i].keyword_symbol = &symbol;
         }
         current_token_.literal = keywords_[i].keyword_symbol;
         current_token_.kind = keywords_[i].kind;
         return;
       }
     }
     i++;
   }
@@ skipping 657 matching lines @@
               "%c%#"Px"", kPrivateKeySeparator, key_value);
   const String& result = String::Handle(String::New(private_key, Heap::kOld));
   return result.raw();
 }
 
 
 void Scanner::InitOnce() {
 }
 
 }  // namespace dart