61 lines
1.7 KiB
C++
61 lines
1.7 KiB
C++
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/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* Licensed under the Apache License Version 2.0 with LLVM Exceptions
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* https://llvm.org/LICENSE.txt
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <unifex/config.hpp>
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#include <unifex/tag_invoke.hpp>
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#include <unifex/type_traits.hpp>
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#include <functional>
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#include <unifex/detail/prologue.hpp>
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namespace unifex {
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namespace _co_invoke {
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inline constexpr struct _fn {
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template (typename Fn, typename... Args)
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(requires tag_invocable<
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_fn,
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type_identity<std::invoke_result_t<Fn, Args...>>,
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Fn,
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Args...>)
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UNIFEX_ALWAYS_INLINE constexpr auto operator()(Fn&& fn, Args&&... args) const
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noexcept(is_nothrow_tag_invocable_v<
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_fn,
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type_identity<std::invoke_result_t<Fn, Args...>>,
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Fn,
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Args...>)
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-> tag_invoke_result_t<
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_fn,
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type_identity<std::invoke_result_t<Fn, Args...>>,
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Fn,
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Args...> {
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return tag_invoke(
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*this,
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type_identity<std::invoke_result_t<Fn, Args...>>{},
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(Fn&&) fn,
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(Args&&) args...);
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}
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} co_invoke{};
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} // namespace _co_invoke
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using _co_invoke::co_invoke;
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} // namespace unifex
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#include <unifex/detail/epilogue.hpp>
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