Move regexp implementation into its own folder.

src/regexp-macro-assembler-irregexp.h

-// Copyright 2012 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_H_
-#define V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_H_
-
-#include "src/regexp-macro-assembler.h"
-
-namespace v8 {
-namespace internal {
-
-#ifdef V8_INTERPRETED_REGEXP
-
-// A light-weight assembler for the Irregexp byte code.
-class RegExpMacroAssemblerIrregexp: public RegExpMacroAssembler {
- public:
-  // Create an assembler. Instructions and relocation information are emitted
-  // into a buffer, with the instructions starting from the beginning and the
-  // relocation information starting from the end of the buffer. See CodeDesc
-  // for a detailed comment on the layout (globals.h).
-  //
-  // If the provided buffer is NULL, the assembler allocates and grows its own
-  // buffer, and buffer_size determines the initial buffer size. The buffer is
-  // owned by the assembler and deallocated upon destruction of the assembler.
-  //
-  // If the provided buffer is not NULL, the assembler uses the provided buffer
-  // for code generation and assumes its size to be buffer_size. If the buffer
-  // is too small, a fatal error occurs. No deallocation of the buffer is done
-  // upon destruction of the assembler.
-  RegExpMacroAssemblerIrregexp(Isolate* isolate, Vector<byte> buffer,
-                               Zone* zone);
-  virtual ~RegExpMacroAssemblerIrregexp();
-  // The byte-code interpreter checks on each push anyway.
-  virtual int stack_limit_slack() { return 1; }
-  virtual bool CanReadUnaligned() { return false; }
-  virtual void Bind(Label* label);
-  virtual void AdvanceCurrentPosition(int by);  // Signed cp change.
-  virtual void PopCurrentPosition();
-  virtual void PushCurrentPosition();
-  virtual void Backtrack();
-  virtual void GoTo(Label* label);
-  virtual void PushBacktrack(Label* label);
-  virtual bool Succeed();
-  virtual void Fail();
-  virtual void PopRegister(int register_index);
-  virtual void PushRegister(int register_index,
-                            StackCheckFlag check_stack_limit);
-  virtual void AdvanceRegister(int reg, int by);  // r[reg] += by.
-  virtual void SetCurrentPositionFromEnd(int by);
-  virtual void SetRegister(int register_index, int to);
-  virtual void WriteCurrentPositionToRegister(int reg, int cp_offset);
-  virtual void ClearRegisters(int reg_from, int reg_to);
-  virtual void ReadCurrentPositionFromRegister(int reg);
-  virtual void WriteStackPointerToRegister(int reg);
-  virtual void ReadStackPointerFromRegister(int reg);
-  virtual void LoadCurrentCharacter(int cp_offset,
-                                    Label* on_end_of_input,
-                                    bool check_bounds = true,
-                                    int characters = 1);
-  virtual void CheckCharacter(unsigned c, Label* on_equal);
-  virtual void CheckCharacterAfterAnd(unsigned c,
-                                      unsigned mask,
-                                      Label* on_equal);
-  virtual void CheckCharacterGT(uc16 limit, Label* on_greater);
-  virtual void CheckCharacterLT(uc16 limit, Label* on_less);
-  virtual void CheckGreedyLoop(Label* on_tos_equals_current_position);
-  virtual void CheckAtStart(Label* on_at_start);
-  virtual void CheckNotAtStart(Label* on_not_at_start);
-  virtual void CheckNotCharacter(unsigned c, Label* on_not_equal);
-  virtual void CheckNotCharacterAfterAnd(unsigned c,
-                                         unsigned mask,
-                                         Label* on_not_equal);
-  virtual void CheckNotCharacterAfterMinusAnd(uc16 c,
-                                              uc16 minus,
-                                              uc16 mask,
-                                              Label* on_not_equal);
-  virtual void CheckCharacterInRange(uc16 from,
-                                     uc16 to,
-                                     Label* on_in_range);
-  virtual void CheckCharacterNotInRange(uc16 from,
-                                        uc16 to,
-                                        Label* on_not_in_range);
-  virtual void CheckBitInTable(Handle<ByteArray> table, Label* on_bit_set);
-  virtual void CheckNotBackReference(int start_reg, Label* on_no_match);
-  virtual void CheckNotBackReferenceIgnoreCase(int start_reg,
-                                               Label* on_no_match);
-  virtual void IfRegisterLT(int register_index, int comparand, Label* if_lt);
-  virtual void IfRegisterGE(int register_index, int comparand, Label* if_ge);
-  virtual void IfRegisterEqPos(int register_index, Label* if_eq);
-
-  virtual IrregexpImplementation Implementation();
-  virtual Handle<HeapObject> GetCode(Handle<String> source);
-
- private:
-  void Expand();
-  // Code and bitmap emission.
-  inline void EmitOrLink(Label* label);
-  inline void Emit32(uint32_t x);
-  inline void Emit16(uint32_t x);
-  inline void Emit8(uint32_t x);
-  inline void Emit(uint32_t bc, uint32_t arg);
-  // Bytecode buffer.
-  int length();
-  void Copy(Address a);
-
-  // The buffer into which code and relocation info are generated.
-  Vector<byte> buffer_;
-  // The program counter.
-  int pc_;
-  // True if the assembler owns the buffer, false if buffer is external.
-  bool own_buffer_;
-  Label backtrack_;
-
-  int advance_current_start_;
-  int advance_current_offset_;
-  int advance_current_end_;
-
-  Isolate* isolate_;
-
-  static const int kInvalidPC = -1;
-
-  DISALLOW_IMPLICIT_CONSTRUCTORS(RegExpMacroAssemblerIrregexp);
-};
-
-#endif  // V8_INTERPRETED_REGEXP
-
-} }  // namespace v8::internal
-
-#endif  // V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_H_