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