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/*
Copyright Barrett Adair 2016-2017
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http ://boost.org/LICENSE_1_0.txt)
HEADER GUARDS INTENTIONALLY OMITTED
*/
#ifndef PP_CAT
#define PP_CAT_(x, y) x ## y
#define PP_CAT(x, y) PP_CAT_(x, y)
#endif
template<typename T>
struct PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST) {
template<typename>
static auto test(...) -> std::true_type;
template<typename A,
typename std::remove_reference<
TRAIT(CALLABLE_TRAIT_UNDER_TEST, A)>::type* = nullptr>
static auto test(int) -> std::false_type;
static constexpr bool value = decltype(test<T>(0))::value;
};
bool PP_CAT(test_, CALLABLE_TRAIT_UNDER_TEST)() {
CT_ASSERT(PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST)<int>::value);
CT_ASSERT(PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST)<int &>::value);
CT_ASSERT(PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST)<int(&)()>::value);
CT_ASSERT(PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST)<int(*)()>::value);
CT_ASSERT(PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST)<int(* const foo::*)()>::value);
CT_ASSERT(PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST)<int foo::*>::value);
CT_ASSERT(PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST)<int (foo::* &)()>::value);
CT_ASSERT(PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST)<int (foo::* const)()>::value);
CT_ASSERT(PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST)<int (foo::* const &)()>::value);
CT_ASSERT(PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST)<int (foo::* volatile)()>::value);
auto lambda = [](){};
CT_ASSERT(PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST)<decltype(lambda)>::value);
CT_ASSERT(PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST)<decltype(lambda)&>::value);
CT_ASSERT(PP_CAT(is_sub_failure_, CALLABLE_TRAIT_UNDER_TEST)<void>::value);
return true;
}
auto PP_CAT(var_, CALLABLE_TRAIT_UNDER_TEST) = PP_CAT(test_, CALLABLE_TRAIT_UNDER_TEST)();
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