ARROW-14475: [C++] Don't shadow enable_if helpers

In unity builds, this can cause odd build or runtime errors when the wrong template gets used - furthermore they manifest randomly on other PRs if they happen to change things enough that CMake groups source files differently for the unity build. Closes #11547 from lidavidm/arrow-14475 Authored-by: David Li <[email protected]> Signed-off-by: Yibo Cai <[email protected]>
apache · Oct 27, 2021 · 1779e94 · 1779e94
1 parent 1b7178d
commit 1779e94
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Showing 3 changed files with 138 additions and 138 deletions.
diff --git a/cpp/src/arrow/compute/kernels/codegen_internal.h b/cpp/src/arrow/compute/kernels/codegen_internal.h
@@ -188,6 +188,38 @@ struct GetOutputType<Decimal256Type> {
   using T = Decimal256;
 };
 
+// ----------------------------------------------------------------------
+// enable_if helpers for C types
+
+template <typename T>
+using is_unsigned_integer_value =
+    std::integral_constant<bool,
+                           std::is_integral<T>::value && std::is_unsigned<T>::value>;
+
+template <typename T>
+using is_signed_integer_value =
+    std::integral_constant<bool, std::is_integral<T>::value && std::is_signed<T>::value>;
+
+template <typename T, typename R = T>
+using enable_if_signed_integer_value = enable_if_t<is_signed_integer_value<T>::value, R>;
+
+template <typename T, typename R = T>
+using enable_if_unsigned_integer_value =
+    enable_if_t<is_unsigned_integer_value<T>::value, R>;
+
+template <typename T, typename R = T>
+using enable_if_integer_value =
+    enable_if_t<is_signed_integer_value<T>::value || is_unsigned_integer_value<T>::value,
+                R>;
+
+template <typename T, typename R = T>
+using enable_if_floating_value = enable_if_t<std::is_floating_point<T>::value, R>;
+
+template <typename T, typename R = T>
+using enable_if_decimal_value =
+    enable_if_t<std::is_same<Decimal128, T>::value || std::is_same<Decimal256, T>::value,
+                R>;
+
 // ----------------------------------------------------------------------
 // Iteration / value access utilities