westonpace commented on a change in pull request #9095:
URL: https://github.com/apache/arrow/pull/9095#discussion_r555194884
##########
File path: cpp/src/arrow/util/iterator.h
##########
@@ -186,6 +194,109 @@ class Iterator : public
util::EqualityComparable<Iterator<T>> {
Result<T> (*next_)(void*) = NULLPTR;
};
+template <typename T>
+struct TransformFlow {
+ using YieldValueType = T;
+
+ TransformFlow(YieldValueType value, bool ready_for_next)
+ : finished_(false),
+ ready_for_next_(ready_for_next),
+ status_(),
+ yield_value_(std::move(value)) {}
+ TransformFlow(bool finished, bool ready_for_next)
+ : finished_(finished), ready_for_next_(ready_for_next), status_(),
yield_value_() {}
+ TransformFlow(Status s) // NOLINT runtime/explicit
+ : finished_(true), ready_for_next_(false), status_(s), yield_value_() {}
Review comment:
Done, this is much simpler.
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