String equality improvements.

src/objects.h

 // Copyright 2006-2008 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 2938 matching lines @@
   // failure.
   Object* Flatten();
   // Try to flatten the string.  Do not allow handling of allocation
   // failures.  After calling TryFlatten, the string could still be a
   // ConsString.
   inline void TryFlatten();
 
   // Is this string an ascii string.
   inline bool IsAsciiRepresentation();
 
+  // Specialization of this function from Object that skips the
+  // string check.
+  inline bool IsSeqAsciiString();
+
   // Fast testing routines that assume the receiver is a string and
   // just check whether it is a certain kind of string.
   inline bool StringIsSlicedString();
   inline bool StringIsConsString();
 
   Vector<const char> ToAsciiVector();
   Vector<const uc16> ToUC16Vector();
 
   // Mark the string as an undetectable object. It only applies to
   // ascii and two byte string types.
@@ skipping 207 matching lines @@
 // Each character in the AsciiString is an ascii character.
 class SeqAsciiString: public SeqString {
  public:
   // Dispatched behavior.
   inline uint16_t SeqAsciiStringGet(int index);
   inline void SeqAsciiStringSet(int index, uint16_t value);
 
   // Get the address of the characters in this string.
   inline Address GetCharsAddress();
 
+  inline const char* GetChars();
+
   // Casting
   static inline SeqAsciiString* cast(Object* obj);
 
   // Garbage collection support.  This method is called by the
   // garbage collector to compute the actual size of an AsciiString
   // instance.
   inline int SeqAsciiStringSize(Map* map);
 
   // Computes the size for an AsciiString instance of a given length.
   static int SizeFor(int length) {
@@ skipping 818 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_