forked from OSchip/llvm-project
40 lines
1.2 KiB
C++
40 lines
1.2 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LIBCXX_TEST_SUPPORT_TEST_STANDARD_FUNCTION_H
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#define LIBCXX_TEST_SUPPORT_TEST_STANDARD_FUNCTION_H
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#include "test_macros.h"
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#if TEST_STD_VER >= 20
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template <class T>
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constexpr bool is_addressable = requires(T t) {
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&t;
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};
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template <class T>
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constexpr bool is_function_like() {
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using X = std::remove_cvref_t<T>;
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static_assert(!is_addressable<X>);
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static_assert(!is_addressable<X const>);
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static_assert(std::destructible<X> && !std::default_initializable<X>);
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static_assert(!std::move_constructible<X>);
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static_assert(!std::assignable_from<X&, X>);
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static_assert(!std::copy_constructible<X>);
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static_assert(!std::assignable_from<X&, X const>);
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static_assert(!std::assignable_from<X&, X&>);
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static_assert(!std::assignable_from<X&, X const&>);
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static_assert(std::is_final_v<X>);
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return true;
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}
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#endif
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#endif // LIBCXX_TEST_SUPPORT_TEST_STANDARD_FUNCTION_H
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