6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
41 lines
1.1 KiB
C++
41 lines
1.1 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef _LIBCPP___CONCEPTS_INVOCABLE_H
|
|
#define _LIBCPP___CONCEPTS_INVOCABLE_H
|
|
|
|
#include <__config>
|
|
#include <__functional/invoke.h>
|
|
#include <__utility/forward.h>
|
|
|
|
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
|
|
# pragma GCC system_header
|
|
#endif
|
|
|
|
_LIBCPP_BEGIN_NAMESPACE_STD
|
|
|
|
#if _LIBCPP_STD_VER >= 20
|
|
|
|
// [concept.invocable]
|
|
|
|
template <class _Fn, class... _Args>
|
|
concept invocable = requires(_Fn&& __fn, _Args&&... __args) {
|
|
std::invoke(std::forward<_Fn>(__fn), std::forward<_Args>(__args)...); // not required to be equality preserving
|
|
};
|
|
|
|
// [concept.regular.invocable]
|
|
|
|
template <class _Fn, class... _Args>
|
|
concept regular_invocable = invocable<_Fn, _Args...>;
|
|
|
|
#endif // _LIBCPP_STD_VER >= 20
|
|
|
|
_LIBCPP_END_NAMESPACE_STD
|
|
|
|
#endif // _LIBCPP___CONCEPTS_INVOCABLE_H
|