Method for

cpp/src/parquet/arrow/reader.cc:729–735

    const auto& type = checked_cast<::arrow::FixedSizeListType&>(*field()->type());
    const int32_t* offsets = reinterpret_cast<const int32_t*>(data->buffers[1]->data());
    for (int x = 1; x <= data->length; x++) {
      int32_t size = offsets[x] - offsets[x - 1];
      if (size != type.list_size()) {
        return Status::Invalid("Expected all lists to be of size=", type.list_size(),
                               " but index ", x, " had size=", size);
      }
    }
    data->buffers.resize(1);
    std::shared_ptr<Array> result = ::arrow::MakeArray(data);
    return std::make_shared<ChunkedArray>(result);