Method ReadNext

cpp/src/arrow/csv/reader.cc:867–871

  int64_t bytes_read() const override { return bytes_decoded_->load(); }

  Status ReadNext(std::shared_ptr<RecordBatch>* batch) override {
    auto next_fut = ReadNextAsync();
    auto next_result = next_fut.result();
    return std::move(next_result).Value(batch);
  }

  Future<std::shared_ptr<RecordBatch>> ReadNextAsync() override {
    return record_batch_gen_();