Method startWrite

bolt/common/memory/ByteStream.h:285–292

Prepares 'this' for writing. Can be called several times, e.g. PrestoSerializer resets these. The memory formerly backing 'ranges_' is not owned and the caller needs to recycle or free this independently.

  /// 'ranges_' is not owned and the caller needs to recycle or free
  /// this independently.
  void startWrite(int32_t initialSize) {
    ranges_.clear();
    isReversed_ = false;
    allocatedBytes_ = 0;
    current_ = nullptr;
    lastRangeEnd_ = 0;
    extend(initialSize);
  }

  void seek(int32_t range, int32_t position) {
    current_ = &ranges_[range];