Move regexp implementation into its own folder.

src/regexp-macro-assembler.h

Index: src/regexp-macro-assembler.h
diff --git a/src/regexp-macro-assembler.h b/src/regexp-macro-assembler.h
deleted file mode 100644
index df244249b630320117a6b7d6cc47dc3315a82e74..0000000000000000000000000000000000000000
--- a/src/regexp-macro-assembler.h
+++ /dev/null
@@ -1,250 +0,0 @@
-// 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_H_
-#define V8_REGEXP_MACRO_ASSEMBLER_H_
-
-#include "src/ast.h"
-
-namespace v8 {
-namespace internal {
-
-struct DisjunctDecisionRow {
-  RegExpCharacterClass cc;
-  Label* on_match;
-};
-
-
-class RegExpMacroAssembler {
- public:
-  // The implementation must be able to handle at least:
-  static const int kMaxRegister = (1 << 16) - 1;
-  static const int kMaxCPOffset = (1 << 15) - 1;
-  static const int kMinCPOffset = -(1 << 15);
-
-  static const int kTableSizeBits = 7;
-  static const int kTableSize = 1 << kTableSizeBits;
-  static const int kTableMask = kTableSize - 1;
-
-  enum IrregexpImplementation {
-    kIA32Implementation,
-    kARMImplementation,
-    kARM64Implementation,
-    kMIPSImplementation,
-    kPPCImplementation,
-    kX64Implementation,
-    kX87Implementation,
-    kBytecodeImplementation
-  };
-
-  enum StackCheckFlag {
-    kNoStackLimitCheck = false,
-    kCheckStackLimit = true
-  };
-
-  RegExpMacroAssembler(Isolate* isolate, Zone* zone);
-  virtual ~RegExpMacroAssembler();
-  // This function is called when code generation is aborted, so that
-  // the assembler could clean up internal data structures.
-  virtual void AbortedCodeGeneration() {}
-  // The maximal number of pushes between stack checks. Users must supply
-  // kCheckStackLimit flag to push operations (instead of kNoStackLimitCheck)
-  // at least once for every stack_limit() pushes that are executed.
-  virtual int stack_limit_slack() = 0;
-  virtual bool CanReadUnaligned() = 0;
-  virtual void AdvanceCurrentPosition(int by) = 0;  // Signed cp change.
-  virtual void AdvanceRegister(int reg, int by) = 0;  // r[reg] += by.
-  // Continues execution from the position pushed on the top of the backtrack
-  // stack by an earlier PushBacktrack(Label*).
-  virtual void Backtrack() = 0;
-  virtual void Bind(Label* label) = 0;
-  virtual void CheckAtStart(Label* on_at_start) = 0;
-  // Dispatch after looking the current character up in a 2-bits-per-entry
-  // map.  The destinations vector has up to 4 labels.
-  virtual void CheckCharacter(unsigned c, Label* on_equal) = 0;
-  // Bitwise and the current character with the given constant and then
-  // check for a match with c.
-  virtual void CheckCharacterAfterAnd(unsigned c,
-                                      unsigned and_with,
-                                      Label* on_equal) = 0;
-  virtual void CheckCharacterGT(uc16 limit, Label* on_greater) = 0;
-  virtual void CheckCharacterLT(uc16 limit, Label* on_less) = 0;
-  virtual void CheckGreedyLoop(Label* on_tos_equals_current_position) = 0;
-  virtual void CheckNotAtStart(Label* on_not_at_start) = 0;
-  virtual void CheckNotBackReference(int start_reg, Label* on_no_match) = 0;
-  virtual void CheckNotBackReferenceIgnoreCase(int start_reg,
-                                               Label* on_no_match) = 0;
-  // Check the current character for a match with a literal character.  If we
-  // fail to match then goto the on_failure label.  End of input always
-  // matches.  If the label is NULL then we should pop a backtrack address off
-  // the stack and go to that.
-  virtual void CheckNotCharacter(unsigned c, Label* on_not_equal) = 0;
-  virtual void CheckNotCharacterAfterAnd(unsigned c,
-                                         unsigned and_with,
-                                         Label* on_not_equal) = 0;
-  // Subtract a constant from the current character, then and with the given
-  // constant and then check for a match with c.
-  virtual void CheckNotCharacterAfterMinusAnd(uc16 c,
-                                              uc16 minus,
-                                              uc16 and_with,
-                                              Label* on_not_equal) = 0;
-  virtual void CheckCharacterInRange(uc16 from,
-                                     uc16 to,  // Both inclusive.
-                                     Label* on_in_range) = 0;
-  virtual void CheckCharacterNotInRange(uc16 from,
-                                        uc16 to,  // Both inclusive.
-                                        Label* on_not_in_range) = 0;
-
-  // The current character (modulus the kTableSize) is looked up in the byte
-  // array, and if the found byte is non-zero, we jump to the on_bit_set label.
-  virtual void CheckBitInTable(Handle<ByteArray> table, Label* on_bit_set) = 0;
-
-  // Checks whether the given offset from the current position is before
-  // the end of the string.  May overwrite the current character.
-  virtual void CheckPosition(int cp_offset, Label* on_outside_input) {
-    LoadCurrentCharacter(cp_offset, on_outside_input, true);
-  }
-  // Check whether a standard/default character class matches the current
-  // character. Returns false if the type of special character class does
-  // not have custom support.
-  // May clobber the current loaded character.
-  virtual bool CheckSpecialCharacterClass(uc16 type,
-                                          Label* on_no_match) {
-    return false;
-  }
-  virtual void Fail() = 0;
-  virtual Handle<HeapObject> GetCode(Handle<String> source) = 0;
-  virtual void GoTo(Label* label) = 0;
-  // Check whether a register is >= a given constant and go to a label if it
-  // is.  Backtracks instead if the label is NULL.
-  virtual void IfRegisterGE(int reg, int comparand, Label* if_ge) = 0;
-  // Check whether a register is < a given constant and go to a label if it is.
-  // Backtracks instead if the label is NULL.
-  virtual void IfRegisterLT(int reg, int comparand, Label* if_lt) = 0;
-  // Check whether a register is == to the current position and go to a
-  // label if it is.
-  virtual void IfRegisterEqPos(int reg, Label* if_eq) = 0;
-  virtual IrregexpImplementation Implementation() = 0;
-  virtual void LoadCurrentCharacter(int cp_offset,
-                                    Label* on_end_of_input,
-                                    bool check_bounds = true,
-                                    int characters = 1) = 0;
-  virtual void PopCurrentPosition() = 0;
-  virtual void PopRegister(int register_index) = 0;
-  // Pushes the label on the backtrack stack, so that a following Backtrack
-  // will go to this label. Always checks the backtrack stack limit.
-  virtual void PushBacktrack(Label* label) = 0;
-  virtual void PushCurrentPosition() = 0;
-  virtual void PushRegister(int register_index,
-                            StackCheckFlag check_stack_limit) = 0;
-  virtual void ReadCurrentPositionFromRegister(int reg) = 0;
-  virtual void ReadStackPointerFromRegister(int reg) = 0;
-  virtual void SetCurrentPositionFromEnd(int by) = 0;
-  virtual void SetRegister(int register_index, int to) = 0;
-  // Return whether the matching (with a global regexp) will be restarted.
-  virtual bool Succeed() = 0;
-  virtual void WriteCurrentPositionToRegister(int reg, int cp_offset) = 0;
-  virtual void ClearRegisters(int reg_from, int reg_to) = 0;
-  virtual void WriteStackPointerToRegister(int reg) = 0;
-
-  // Controls the generation of large inlined constants in the code.
-  void set_slow_safe(bool ssc) { slow_safe_compiler_ = ssc; }
-  bool slow_safe() { return slow_safe_compiler_; }
-
-  enum GlobalMode { NOT_GLOBAL, GLOBAL, GLOBAL_NO_ZERO_LENGTH_CHECK };
-  // Set whether the regular expression has the global flag.  Exiting due to
-  // a failure in a global regexp may still mean success overall.
-  inline void set_global_mode(GlobalMode mode) { global_mode_ = mode; }
-  inline bool global() { return global_mode_ != NOT_GLOBAL; }
-  inline bool global_with_zero_length_check() {
-    return global_mode_ == GLOBAL;
-  }
-
-  Isolate* isolate() const { return isolate_; }
-  Zone* zone() const { return zone_; }
-
- private:
-  bool slow_safe_compiler_;
-  bool global_mode_;
-  Isolate* isolate_;
-  Zone* zone_;
-};
-
-
-#ifndef V8_INTERPRETED_REGEXP  // Avoid compiling unused code.
-
-class NativeRegExpMacroAssembler: public RegExpMacroAssembler {
- public:
-  // Type of input string to generate code for.
-  enum Mode { LATIN1 = 1, UC16 = 2 };
-
-  // Result of calling generated native RegExp code.
-  // RETRY: Something significant changed during execution, and the matching
-  //        should be retried from scratch.
-  // EXCEPTION: Something failed during execution. If no exception has been
-  //        thrown, it's an internal out-of-memory, and the caller should
-  //        throw the exception.
-  // FAILURE: Matching failed.
-  // SUCCESS: Matching succeeded, and the output array has been filled with
-  //        capture positions.
-  enum Result { RETRY = -2, EXCEPTION = -1, FAILURE = 0, SUCCESS = 1 };
-
-  NativeRegExpMacroAssembler(Isolate* isolate, Zone* zone);
-  virtual ~NativeRegExpMacroAssembler();
-  virtual bool CanReadUnaligned();
-
-  static Result Match(Handle<Code> regexp,
-                      Handle<String> subject,
-                      int* offsets_vector,
-                      int offsets_vector_length,
-                      int previous_index,
-                      Isolate* isolate);
-
-  // Compares two-byte strings case insensitively.
-  // Called from generated RegExp code.
-  static int CaseInsensitiveCompareUC16(Address byte_offset1,
-                                        Address byte_offset2,
-                                        size_t byte_length,
-                                        Isolate* isolate);
-
-  // Called from RegExp if the backtrack stack limit is hit.
-  // Tries to expand the stack. Returns the new stack-pointer if
-  // successful, and updates the stack_top address, or returns 0 if unable
-  // to grow the stack.
-  // This function must not trigger a garbage collection.
-  static Address GrowStack(Address stack_pointer, Address* stack_top,
-                           Isolate* isolate);
-
-  static const byte* StringCharacterPosition(String* subject, int start_index);
-
-  static int CheckStackGuardState(Isolate* isolate, int start_index,
-                                  bool is_direct_call, Address* return_address,
-                                  Code* re_code, String** subject,
-                                  const byte** input_start,
-                                  const byte** input_end);
-
-  // Byte map of one byte characters with a 0xff if the character is a word
-  // character (digit, letter or underscore) and 0x00 otherwise.
-  // Used by generated RegExp code.
-  static const byte word_character_map[256];
-
-  static Address word_character_map_address() {
-    return const_cast<Address>(&word_character_map[0]);
-  }
-
-  static Result Execute(Code* code,
-                        String* input,
-                        int start_offset,
-                        const byte* input_start,
-                        const byte* input_end,
-                        int* output,
-                        int output_size,
-                        Isolate* isolate);
-};
-
-#endif  // V8_INTERPRETED_REGEXP
-
-} }  // namespace v8::internal
-
-#endif  // V8_REGEXP_MACRO_ASSEMBLER_H_