Function FixedWidthInBitsFallback

cpp/src/arrow/util/fixed_width_internal.cc:77–96

}

static int64_t FixedWidthInBitsFallback(const FixedSizeListType& fixed_size_list_type) {
  auto* fsl = &fixed_size_list_type;
  int64_t list_size = fsl->list_size();
  for (auto type = fsl->value_type().get();;) {
    auto type_id = type->id();
    if (type_id == Type::FIXED_SIZE_LIST) {
      fsl = checked_cast<const FixedSizeListType*>(type);
      list_size *= fsl->list_size();
      type = fsl->value_type().get();
      continue;
    }
    if (is_fixed_width(type_id)) {
      const int64_t flat_bit_width = list_size * type->bit_width();
      DCHECK_GE(flat_bit_width, 0);
      return flat_bit_width;
    }
    break;
  }
  return -1;
}

int64_t FixedWidthInBits(const DataType& type) {
  auto type_id = type.id();