regexp-macro-assembler-irregexp-inl.h

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// Copyright 2008-2009 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.
 
// A light-weight assembler for the Irregexp byte code.
 
 
#include "src/v8.h"
 
#include "src/ast.h"
#include "src/bytecodes-irregexp.h"
 
#ifndef V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_INL_H_
#define V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_INL_H_
 
namespace v8 {
namespace internal {
 
#ifdef V8_INTERPRETED_REGEXP
 
void RegExpMacroAssemblerIrregexp::Emit(uint32_t byte,
                                        uint32_t twenty_four_bits) {
  uint32_t word = ((twenty_four_bits << BYTECODE_SHIFT) | byte);
  DCHECK(pc_ <= buffer_.length());
  if (pc_  + 3 >= buffer_.length()) {
    Expand();
  }
  *reinterpret_cast<uint32_t*>(buffer_.start() + pc_) = word;
  pc_ += 4;
}
 
 
void RegExpMacroAssemblerIrregexp::Emit16(uint32_t word) {
  DCHECK(pc_ <= buffer_.length());
  if (pc_ + 1 >= buffer_.length()) {
    Expand();
  }
  *reinterpret_cast<uint16_t*>(buffer_.start() + pc_) = word;
  pc_ += 2;
}
 
 
void RegExpMacroAssemblerIrregexp::Emit8(uint32_t word) {
  DCHECK(pc_ <= buffer_.length());
  if (pc_ == buffer_.length()) {
    Expand();
  }
  *reinterpret_cast<unsigned char*>(buffer_.start() + pc_) = word;
  pc_ += 1;
}
 
 
void RegExpMacroAssemblerIrregexp::Emit32(uint32_t word) {
  DCHECK(pc_ <= buffer_.length());
  if (pc_ + 3 >= buffer_.length()) {
    Expand();
  }
  *reinterpret_cast<uint32_t*>(buffer_.start() + pc_) = word;
  pc_ += 4;
}
 
#endif  // V8_INTERPRETED_REGEXP
 
} }  // namespace v8::internal
 
#endif  // V8_REGEXP_MACRO_ASSEMBLER_IRREGEXP_INL_H_