Function GetArrayView

cpp/src/arrow/array/data.cc:934–949

namespace internal {

Result<std::shared_ptr<ArrayData>> GetArrayView(
    const std::shared_ptr<ArrayData>& data, const std::shared_ptr<DataType>& out_type) {
  ViewDataImpl impl;
  impl.root_in_type = data->type;
  impl.root_out_type = out_type;
  AccumulateLayouts(impl.root_in_type, &impl.in_layouts);
  AccumulateArrayData(data, &impl.in_data);
  impl.in_data_length = data->length;

  std::shared_ptr<ArrayData> out_data;
  // Dummy field for output type
  auto out_field = field("", out_type);
  RETURN_NOT_OK(impl.MakeDataView(out_field, &out_data));
  RETURN_NOT_OK(impl.CheckInputExhausted());
  return out_data;
}

}  // namespace internal
}  // namespace arrow