class RandomBytesRequest : public AsyncWrap {
 public:
  enum FreeMode { FREE_DATA, DONT_FREE_DATA };

  RandomBytesRequest(Environment* env,
                     Local<Object> object,
                     size_t size,
                     char* data,
                     FreeMode free_mode)
      : AsyncWrap(env, object, AsyncWrap::PROVIDER_RANDOMBYTESREQUEST),
        error_(0),
        size_(size),
        data_(data),
        free_mode_(free_mode) {
    Wrap(object, this);
  }

  ~RandomBytesRequest() override {
    ClearWrap(object());
    persistent().Reset();
  }

  uv_work_t* work_req() {
    return &work_req_;
  }

  inline size_t size() const {
    return size_;
  }

  inline char* data() const {
    return data_;
  }

  inline void set_data(char* data) {
    data_ = data;
  }

  inline void release() {
    size_ = 0;
    if (free_mode_ == FREE_DATA) {
      free(data_);
    }
  }

  inline void return_memory(char** d, size_t* len) {
    *d = data_;
    data_ = nullptr;
    *len = size_;
    size_ = 0;
  }

  inline unsigned long error() const {  // NOLINT(runtime/int)
    return error_;
  }

  inline void set_error(unsigned long err) {  // NOLINT(runtime/int)
    error_ = err;
  }

  size_t self_size() const override { return sizeof(*this); }

  uv_work_t work_req_;

 private:
  unsigned long error_;  // NOLINT(runtime/int)
  size_t size_;
  char* data_;
  const FreeMode free_mode_;
};