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81 lines
3.2 KiB
C++
81 lines
3.2 KiB
C++
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/*
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/~` _ _ _|_. _ _ |_ | _
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\_,(_)| | | || ||_|(_||_)|(/_
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https://github.com/Naios/continuable
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v4.1.0
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Copyright(c) 2015 - 2020 Denis Blank <denis.blank at outlook dot com>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files(the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions :
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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**/
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#ifndef CONTINUABLE_DETAIL_OPERATIONS_ASYNC_HPP_INCLUDED
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#define CONTINUABLE_DETAIL_OPERATIONS_ASYNC_HPP_INCLUDED
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#include <continuable/continuable-base.hpp>
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#include <continuable/detail/core/annotation.hpp>
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#include <continuable/detail/core/base.hpp>
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#include <continuable/detail/utility/identity.hpp>
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namespace cti {
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namespace detail {
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namespace operations {
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template <typename Callable, typename Executor, typename... Args>
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auto async(Callable&& callable, Executor&& executor, Args&&... args) {
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using result_t =
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decltype(util::invoke(std::forward<decltype(callable)>(callable),
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std::forward<decltype(args)>(args)...));
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constexpr auto hint =
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decltype(base::decoration::invoker_of(identity<result_t>{}))::hint();
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auto continuation = [callable = std::forward<decltype(callable)>(callable),
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executor = std::forward<decltype(executor)>(executor),
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args = std::make_tuple(std::forward<decltype(args)>(
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args)...)](auto&& promise) mutable {
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auto invoker = base::decoration::invoker_of(identity<result_t>{});
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using promise_t = decltype(promise);
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// Invoke the callback
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traits::unpack(
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[&](auto&&... args) mutable {
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// Invoke the promise through the dedicated invoker
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// and through the given executor
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base::on_executor(std::move(executor), std::move(invoker),
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std::move(callable),
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std::forward<promise_t>(promise),
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std::forward<decltype(args)>(args)...);
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},
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std::move(args));
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};
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return base::attorney::create_from(std::move(continuation), //
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hint, util::ownership{});
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}
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} // namespace operations
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} // namespace detail
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} // namespace cti
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#endif // CONTINUABLE_DETAIL_OPERATIONS_ASYNC_HPP_INCLUDED
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