Method DoRead

cpp/src/arrow/io/memory.cc:371–377

}

Result<int64_t> BufferReader::DoRead(int64_t nbytes, void* out) {
  RETURN_NOT_OK(CheckClosed());
  ARROW_ASSIGN_OR_RAISE(int64_t bytes_read,
                        DoReadAt(position_, nbytes, /*allow_short_read=*/true, out));
  position_ += bytes_read;
  return bytes_read;
}

Result<std::shared_ptr<Buffer>> BufferReader::DoRead(int64_t nbytes) {
  RETURN_NOT_OK(CheckClosed());