augustoasilva commented on a change in pull request #11551:
URL: https://github.com/apache/arrow/pull/11551#discussion_r744024137
##########
File path: cpp/src/gandiva/gdv_function_stubs.cc
##########
@@ -794,6 +795,88 @@ const char* gdv_fn_initcap_utf8(int64_t context, const
char* data, int32_t data_
*out_len = out_idx;
return out;
}
+
+GANDIVA_EXPORT
+const char* gdv_fn_mask_first_n(int64_t context, const char* data, int32_t
data_len,
+ int32_t n_to_mask, int32_t* out_len) {
+ if (data_len <= 0) {
+ *out_len = 0;
+ return nullptr;
+ }
+
+ if (n_to_mask < 0) {
Review comment:
In Hive implementation it did not say anything about that, but I've
changed the code and now it handles this case better
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