Method BufferReader

cpp/src/arrow/io/memory.cc:264–269

// In-memory buffer reader

BufferReader::BufferReader(std::shared_ptr<Buffer> buffer)
    : buffer_(std::move(buffer)),
      data_(buffer_ ? buffer_->data() : reinterpret_cast<const uint8_t*>("")),
      size_(buffer_ ? buffer_->size() : 0),
      position_(0),
      is_open_(true) {}

std::unique_ptr<BufferReader> BufferReader::FromString(std::string data) {
  return std::make_unique<BufferReader>(Buffer::FromString(std::move(data)));