AlenkaF commented on code in PR #36496:
URL: https://github.com/apache/arrow/pull/36496#discussion_r1342502720
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cpp/src/arrow/extension/fixed_shape_tensor.cc:
##########
@@ -104,6 +104,38 @@ bool FixedShapeTensorType::ExtensionEquals(const
ExtensionType& other) const {
permutation_equivalent;
}
+std::string FixedShapeTensorType::ToString() const {
+ std::stringstream ss;
+ ss << "extension<" << this->extension_name()
+ << "[value_type=" << value_type_->ToString() << ", shape=[";
+ std::string separator;
+ for (auto v : shape_) {
+ ss << separator << v;
+ separator = ",";
+ }
+ ss << "]";
+ if (!permutation_.empty()) {
+ ss << ", permutation=[";
+ std::string p_separator;
+ for (auto v : permutation_) {
+ ss << p_separator << v;
+ p_separator = ",";
+ }
+ ss << "]";
+ }
+ if (!dim_names_.empty()) {
+ ss << ", dim_names=[";
+ std::string d_separator;
+ for (std::string v : dim_names_) {
+ ss << d_separator << v;
+ d_separator = ",";
+ }
+ ss << "]";
+ }
+ ss << "]>";
+ return ss.str();
+}
+
Review Comment:
I went with the class template Ben suggested. The only change I added was
due to compiler errors on my M1 (`no viable constructor or deduction guide for
deduction of template arguments`).
This solution seemed simpler then vendoring `fmt`. I also decided to do a
new template and not to use `GenericToString` helper that Rok suggested because
it didn't feel right to depend on the compute module.
The change has been added here:
https://github.com/apache/arrow/pull/36496/commits/796193d05b10b2a5fb5aa3e441e80780c42fe9f6
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