calling convention examples

example/changing_calling_conventions.cpp

@@ -0,0 +1,37 @@
+/*!<-
+Copyright (c) 2016 Barrett Adair
+
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+->*/
+
+//[ changing_calling_conventions
+#define CALLABLE_TRAITS_ENABLE_STDCALL
+#define CALLABLE_TRAITS_ENABLE_FASTCALL
+
+#include <type_traits>
+#include <callable_traits/has_calling_convention.hpp>
+#include <callable_traits/add_calling_convention.hpp>
+#include <callable_traits/remove_calling_convention.hpp>
+
+namespace ct = callable_traits;
+
+int main() {
+
+    using f = void(__fastcall *)(int);
+
+    static_assert(ct::has_calling_convention<f, ct::fastcall_tag>(), "");
+    static_assert(!ct::has_calling_convention<f, ct::stdcall_tag>(), "");
+
+    using expect = void(__stdcall *)(int);
+
+    static_assert(ct::has_calling_convention<expect, ct::stdcall_tag>(), "");
+    static_assert(!ct::has_calling_convention<expect, ct::fastcall_tag>(), "");
+
+    using g = ct::remove_calling_convention<f>;
+    using test = ct::add_calling_convention<g, ct::stdcall_tag>;
+
+    static_assert(ct::has_calling_convention<test, ct::stdcall_tag>(), "");
+    static_assert(std::is_same<test, expect>::value, "");
+}
+//]