praveenbingo commented on a change in pull request #8096:
URL: https://github.com/apache/arrow/pull/8096#discussion_r503032643
##########
File path: cpp/src/gandiva/gdv_function_stubs.cc
##########
@@ -150,6 +151,37 @@ char* gdv_fn_dec_to_string(int64_t context, int64_t
x_high, uint64_t x_low,
memcpy(ret, dec_str.data(), *dec_str_len);
return ret;
}
+
+#define CAST_NUMERIC_FROM_STRING(OUT_TYPE, ARROW_TYPE, TYPE_NAME)
\
+ GANDIVA_EXPORT
\
+ OUT_TYPE gdv_fn_cast##TYPE_NAME##_utf8(int64_t context, const char* data,
\
+ int32_t len) {
\
+ OUT_TYPE val = 0;
\
+ /* trim leading and trailing spaces */
\
+ int32_t trimmed_len;
\
+ int32_t start = 0, end = len - 1;
\
+ while (start <= end && data[start] == ' ') {
\
+ ++start;
\
+ }
\
+ while (end >= start && data[end] == ' ') {
\
+ --end;
\
+ }
\
+ trimmed_len = end - start + 1;
\
+ const char* trimmed_data = data + start;
\
+ if (!arrow::internal::ParseValue<ARROW_TYPE>(trimmed_data, trimmed_len,
&val)) { \
+ std::string err =
\
Review comment:
did we make this an external function only for this message? whats the
perf penalty for doing this..
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