kiszk commented on a change in pull request #7507:
URL: https://github.com/apache/arrow/pull/7507#discussion_r532819514
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File path: cpp/src/arrow/array/util.cc
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@@ -74,6 +75,204 @@ class ArrayDataWrapper {
std::shared_ptr<Array>* out_;
};
+class ArrayDataEndianSwapper {
+ public:
+ ArrayDataEndianSwapper(std::shared_ptr<ArrayData>& data, int64_t length)
+ : data_(data), length_(length) {}
+
+ Status SwapType(const DataType& type) {
+ RETURN_NOT_OK(VisitTypeInline(type, this));
+ RETURN_NOT_OK(SwapChildren(type.fields()));
+ return Status::OK();
+ }
+
+ Status SwapChildren(std::vector<std::shared_ptr<Field>> child_fields) {
+ int i = 0;
+ for (const auto& child_field : child_fields) {
+ ArrayDataEndianSwapper swapper_child_visitor(data_->child_data[i],
+
data_->child_data[i]->length);
+ RETURN_NOT_OK(VisitTypeInline(*child_field.get()->type(),
&swapper_child_visitor));
+ RETURN_NOT_OK(
+
swapper_child_visitor.SwapChildren((*child_field.get()->type()).fields()));
+ i++;
Review comment:
I need to add an additional argument to `SwapEndianArrayData` since
`data->child_data[i]` is passed to `ArrayDataEndianSwapper`. I will do that.
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