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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)
*/
#include <boost/callable_traits/args.hpp>
#include "test.hpp"
struct foo;
template<typename T>
struct is_substitution_failure_args {
template<typename>
static auto test(...) -> std::true_type;
template<typename U,
TRAIT(boost::callable_traits::args, U, std::tuple)* = nullptr>
static auto test(int) -> std::false_type;
static constexpr bool value = decltype(test<T>(0))::value;
};
int main() {
CT_ASSERT(is_substitution_failure_args<int>::value);
CT_ASSERT(is_substitution_failure_args<int &>::value);
CT_ASSERT(is_substitution_failure_args<int (** const &)()>::value);
CT_ASSERT(is_substitution_failure_args<int (foo::** &)()>::value);
CT_ASSERT(is_substitution_failure_args<int (foo::** const)()>::value);
CT_ASSERT(is_substitution_failure_args<int (foo::** const &)()>::value);
CT_ASSERT(is_substitution_failure_args<int (foo::** volatile)()>::value);
CT_ASSERT(!is_substitution_failure_args<int (* const &)()>::value);
CT_ASSERT(!is_substitution_failure_args<int (foo::* &)()>::value);
CT_ASSERT(!is_substitution_failure_args<int (foo::* const)()>::value);
CT_ASSERT(!is_substitution_failure_args<int (foo::* const &)()>::value);
CT_ASSERT(!is_substitution_failure_args<int (foo::* volatile)()>::value);
auto lambda = [](){};
CT_ASSERT(!is_substitution_failure_args<decltype(lambda)&>::value);
CT_ASSERT(is_substitution_failure_args<void>::value);
}
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