// Copyright 2025 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_REGEXP_BYTECODE_ITERATOR_H_
#define V8_REGEXP_REGEXP_BYTECODE_ITERATOR_H_

#include <vector>

#include "irregexp/imported/regexp-bytecodes.h"

namespace v8 {
namespace internal {

class TrustedByteArray;

namespace regexp {

class BytecodeIterator {
 public:
  explicit BytecodeIterator(DirectHandle<TrustedByteArray> bytecode);
  BytecodeIterator(DirectHandle<TrustedByteArray> bytecode, uint32_t offset);
  ~BytecodeIterator();

  inline bool done() const;
  inline void advance();
  inline Bytecode current_bytecode() const;
  inline uint8_t current_size() const;
  inline uint32_t current_offset() const;
  inline uint8_t* current_address() const;
  inline void reset();

  // Calls |fun| templatized by Bytecode for each bytecode in the
  // Bytecode Array.
  template <typename Func>
  inline void ForEachBytecode(Func&& fun);

  static void UpdatePointersCallback(void* iterator);

 private:
  void UpdatePointers();

  DirectHandle<TrustedByteArray> bytecode_;
  uint8_t* start_;
  uint8_t* end_;
  uint8_t* cursor_;
};

}  // namespace regexp
}  // namespace internal
}  // namespace v8

#endif  // V8_REGEXP_REGEXP_BYTECODE_ITERATOR_H_