| //===----------------------------------------------------------------------===// |
| // |
| // 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___COROUTINE_TRIVIAL_AWAITABLES_H |
| #define __LIBCPP___COROUTINE_TRIVIAL_AWAITABLES_H |
| |
| #include <__config> |
| #include <__coroutine/coroutine_handle.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| #pragma GCC system_header |
| #endif |
| |
| #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX20_COROUTINES) |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| // [coroutine.trivial.awaitables] |
| struct suspend_never { |
| _LIBCPP_HIDE_FROM_ABI |
| constexpr bool await_ready() const noexcept { return true; } |
| _LIBCPP_HIDE_FROM_ABI |
| constexpr void await_suspend(coroutine_handle<>) const noexcept {} |
| _LIBCPP_HIDE_FROM_ABI |
| constexpr void await_resume() const noexcept {} |
| }; |
| |
| struct suspend_always { |
| _LIBCPP_HIDE_FROM_ABI |
| constexpr bool await_ready() const noexcept { return false; } |
| _LIBCPP_HIDE_FROM_ABI |
| constexpr void await_suspend(coroutine_handle<>) const noexcept {} |
| _LIBCPP_HIDE_FROM_ABI |
| constexpr void await_resume() const noexcept {} |
| }; |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // __LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_CXX20_COROUTINES) |
| |
| #endif // __LIBCPP___COROUTINE_TRIVIAL_AWAITABLES_H |