felipecrv commented on code in PR #35003:
URL: https://github.com/apache/arrow/pull/35003#discussion_r1370822185
##########
cpp/src/arrow/util/ree_util.cc:
##########
@@ -61,6 +61,62 @@ int64_t LogicalNullCount(const ArraySpan& span) {
return LogicalNullCount<int64_t>(span);
}
+namespace internal {
+
+/// \pre 0 <= i < array_span_.length()
+template <typename RunEndCType>
+int64_t FindPhysicalIndexImpl(PhysicalIndexFinder<RunEndCType>& self, int64_t
i) {
+ DCHECK_LT(i, self.array_span.length);
+ const int64_t run_ends_size = ree_util::RunEndsArray(self.array_span).length;
+ DCHECK_LT(self.last_physical_index, run_ends_size);
+ // This access to self.run_ends_[last_physical_index_] is always safe
because:
+ // 1. 0 <= i < array_span_.length() implies there is at least one run and
the initial
+ // value 0 will be safe to index with.
+ // 2. last_physical_index_ > 0 is always the result of a valid call to
Review Comment:
Oops. Missed these when I renamed the struct members.
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