Add voidT SFINAE support.

HaxyM · Aug 22, 2024 · 862f941 · 862f941
1 parent 70b7a61
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diff --git a/include/crap/type_traits b/include/crap/type_traits
@@ -0,0 +1,7 @@
+#ifndef CRAP_TYPETRAITS
+#define CRAP_TYPETRAITS
+
+#include "type_traits.d/voidt.h"
+
+#endif
+
diff --git a/include/crap/type_traits.d/voidt.h b/include/crap/type_traits.d/voidt.h
@@ -0,0 +1,20 @@
+#ifndef CRAP_TYPETRAITS_VOIDT
+#define CRAP_TYPETRAITS_VOIDT
+
+#include "../version.d/libvoidt.h"
+
+#if (crap_lib_void_t >= 201411L)
+#include <type_traits>
+#endif
+
+namespace crap
+{
+#if (crap_lib_void_t >= 201411L)
+ template <class ... Types> using voidT = std :: void_t<Types...>;
+#else
+ //TODO: May require CWG Issue 1558 walkaround.
+ template <class...> using voidT = void;
+#endif
+}
+#endif
+