Function ConvertIntegerWithNulls

python/pyarrow/src/arrow/python/arrow_to_pandas.cc:569–581

template <typename InType, typename OutType>
inline void ConvertIntegerWithNulls(const PandasOptions& options,
                                    const ChunkedArray& data, OutType* out_values) {
  for (int c = 0; c < data.num_chunks(); c++) {
    const auto& arr = *data.chunk(c);
    const InType* in_values = GetPrimitiveValues<InType>(arr);
    // Upcast to double, set NaN as appropriate

    for (int i = 0; i < arr.length(); ++i) {
      *out_values++ =
          arr.IsNull(i) ? static_cast<OutType>(NAN) : static_cast<OutType>(in_values[i]);
    }
  }
}

template <typename T>
inline void ConvertIntegerNoNullsSameType(const PandasOptions& options,