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

src/regexp-macro-assembler-re2k.h

Index: src/regexp-macro-assembler-re2k.h
===================================================================
--- src/regexp-macro-assembler-re2k.h	(revision 799)
+++ src/regexp-macro-assembler-re2k.h	(working copy)
@@ -52,9 +52,14 @@
   virtual void AdvanceRegister(int reg, int by);  // r[reg] += by.
   virtual void SetRegister(int register_index, int to);
   virtual void WriteCurrentPositionToRegister(int reg);
+  virtual void SetCurrentPositionFromRegister(int reg);
+  virtual void WriteStackPointerToRegister(int reg);
+  virtual void SetStackPointerFromRegister(int reg);
   virtual void LoadCurrentCharacter(int cp_offset, Label* on_end_of_input);
   virtual void CheckCharacterLT(uc16 limit, Label* on_less);
   virtual void CheckCharacterGT(uc16 limit, Label* on_greater);
+  virtual void CheckCharacter(uc16 c, Label* on_equal);
+  virtual void CheckNotCharacter(uc16 c, Label* on_not_equal);
   virtual void CheckCharacters(Vector<const uc16> str,
                                int cp_offset,
                                Label* on_failure);