ViniciusSouzaRoque commented on a change in pull request #11522:
URL: https://github.com/apache/arrow/pull/11522#discussion_r743544688
##########
File path: cpp/src/gandiva/precompiled/string_ops.cc
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@@ -1642,6 +1642,83 @@ const char* convert_toUTF8(int64_t context, const char*
value, int32_t value_len
return value;
}
+// Calculate the levenshtein distance between two string values
+FORCE_INLINE
+gdv_int32 levenshtein_utf8_utf8(int64_t context, const char* in1, int32_t
in1_len,
+ const char* in2, int32_t in2_len) {
+ if (in1_len < 0 || in2_len < 0) {
+ gdv_fn_context_set_error_msg(context, "String length must be greater than
0");
+ return 0;
+ }
+
+ // Check input size 0
+ if (in1_len == 0) {
+ return in2_len;
+ }
+ if (in2_len == 0) {
+ return in1_len;
+ }
+
+ int* ptr = new int[(in2_len + 1) * 2];
Review comment:
Okay, it makes sense! I did the exchange using a boolean variable and
two integers so I don't need to copy anything (besides the input sizes)
See if it looks good, please!
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