Method operator()

cpp/src/arrow/ipc/reader.cc:1966–1973

};

Future<SelectiveIpcFileRecordBatchGenerator::Item>
SelectiveIpcFileRecordBatchGenerator::operator()() {
  int index = index_++;
  if (index >= state_->num_record_batches()) {
    return IterationEnd<SelectiveIpcFileRecordBatchGenerator::Item>();
  }
  return state_->ReadRecordBatchAsync(index);
}

Future<WholeIpcFileRecordBatchGenerator::Item>
WholeIpcFileRecordBatchGenerator::operator()() {