Unify the handling of comparinsons against null and undefined.

src/v8.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 106 matching lines @@
   // True if error has been signaled for current engine
   // (reset to false if engine is restarted)
   static bool has_fatal_error_;
   // True if engine has been shut down
   // (reset if engine is restarted)
   static bool has_been_disposed_;
   // True if we are using the crankshaft optimizing compiler.
   static bool use_crankshaft_;
 };
 
+
+// JavaScript defines two kinds of 'nil', for whatever reasons...

[danno, 2011/09/19 14:38:50]

no personalized comment (no "for whatever reasons") :-)

[Sven Panne, 2011/09/19 14:45:57]

Done.

+enum NilValue { kNullValue, kUndefinedValue };
+
+
+// JavaScript defines two kinds of equality, again, for whatever reasons...

[danno, 2011/09/19 14:38:50]

here, too.

[Sven Panne, 2011/09/19 14:45:57]

Done.

+enum EqualityKind { kStrictEquality, kNonStrictEquality };
+
+
 } }  // namespace v8::internal
 
 namespace i = v8::internal;
 
 #endif  // V8_V8_H_