* Add support for positive lookahead assertions and negative...

src/assembler-re2k.h

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 
 // A light-weight assembler for the Regexp2000 byte code.
 
 #ifndef V8_ASSEMBLER_RE2K_H_
 #define V8_ASSEMBLER_RE2K_H_
 
 namespace v8 { namespace internal {
 
 
@@ skipping 15 matching lines @@
   explicit Re2kAssembler(Vector<byte>);
   ~Re2kAssembler();
 
   // CP = current position in source.
   // BT = backtrack label.
 
   // Stack.
   void PushCurrentPosition(int cp_offset = 0);
   void PushBacktrack(Label* l);
   void PushRegister(int index);
-  void SetRegisterToCurrentPosition(int index, int cp_offset = 0);
+  void WriteCurrentPositionToRegister(int index, int cp_offset = 0);
+  void SetCurrentPositionFromRegister(int index);
+  void WriteStackPointerToRegister(int index);
+  void SetStackPointerFromRegister(int index);
   void SetRegister(int index, int value);
   void AdvanceRegister(int index, int by);
 
   void PopCurrentPosition();
   void PopBacktrack();
   void PopRegister(int index);
 
   void Fail();
   void Succeed();
 
   void Break();  // This instruction will cause a fatal VM error if hit.
 
   void Bind(Label* l);  // Binds an unbound label L to the current code posn.
 
   void AdvanceCP(int by);
 
   void GoTo(Label* l);
 
   // Loads current char into a machine register.  Jumps to the label if we
   // reached the end of the subject string.  Fall through otherwise.
   void LoadCurrentChar(int cp_offset, Label* on_end);
 
   // Checks current char register against a singleton.
-  void CheckChar(uc16 c, Label* on_mismatch);
-  void CheckNotChar(uc16 c, Label* on_match);
+  void CheckCharacter(uc16 c, Label* on_match);
+  void CheckNotCharacter(uc16 c, Label* on_mismatch);
 
   // Used to check current char register against a range.
   void CheckCharacterLT(uc16 limit, Label* on_less);
   void CheckCharacterGT(uc16 limit, Label* on_greater);
 
   // Checks current position for a match against a
   // previous capture.  Advances current position by the length of the capture
   // iff it matches.  The capture is stored in a given register and the
   // the register after.  If a register contains -1 then the other register
   // mush always contain -1 and the on_mismatch label will never be called.
@@ skipping 51 matching lines @@
   // True if the assembler owns the buffer, false if buffer is external.
   bool own_buffer_;
 
   void Expand();
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ASSEMBLER_RE2K_H_