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105 lines
3.3 KiB
C++
105 lines
3.3 KiB
C++
//
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// impl/deferred.hpp
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// ~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2022 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef ASIO_IMPL_DEFERRED_HPP
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#define ASIO_IMPL_DEFERRED_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include "asio/detail/push_options.hpp"
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namespace asio {
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#if !defined(GENERATING_DOCUMENTATION)
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template <typename Signature>
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class async_result<deferred_t, Signature>
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{
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public:
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template <typename Initiation, typename... InitArgs>
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static deferred_async_operation<Signature, Initiation, InitArgs...>
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initiate(ASIO_MOVE_ARG(Initiation) initiation,
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deferred_t, ASIO_MOVE_ARG(InitArgs)... args)
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{
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return deferred_async_operation<
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Signature, Initiation, InitArgs...>(
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deferred_init_tag{},
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ASIO_MOVE_CAST(Initiation)(initiation),
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ASIO_MOVE_CAST(InitArgs)(args)...);
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}
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};
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template <typename Function, typename R, typename... Args>
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class async_result<deferred_function<Function>, R(Args...)>
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{
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public:
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template <typename Initiation, typename... InitArgs>
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static auto initiate(ASIO_MOVE_ARG(Initiation) initiation,
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deferred_function<Function> token,
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ASIO_MOVE_ARG(InitArgs)... init_args)
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-> decltype(
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deferred_sequence<
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deferred_async_operation<
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R(Args...), Initiation, InitArgs...>,
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Function>(deferred_init_tag{},
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deferred_async_operation<
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R(Args...), Initiation, InitArgs...>(
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deferred_init_tag{},
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ASIO_MOVE_CAST(Initiation)(initiation),
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ASIO_MOVE_CAST(InitArgs)(init_args)...),
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ASIO_MOVE_CAST(Function)(token.function_)))
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{
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return deferred_sequence<
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deferred_async_operation<
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R(Args...), Initiation, InitArgs...>,
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Function>(deferred_init_tag{},
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deferred_async_operation<
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R(Args...), Initiation, InitArgs...>(
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deferred_init_tag{},
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ASIO_MOVE_CAST(Initiation)(initiation),
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ASIO_MOVE_CAST(InitArgs)(init_args)...),
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ASIO_MOVE_CAST(Function)(token.function_));
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}
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};
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template <template <typename, typename> class Associator,
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typename Handler, typename Tail, typename DefaultCandidate>
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struct associator<Associator,
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detail::deferred_sequence_handler<Handler, Tail>,
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DefaultCandidate>
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: Associator<Handler, DefaultCandidate>
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{
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static typename Associator<Handler, DefaultCandidate>::type
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get(const detail::deferred_sequence_handler<Handler, Tail>& h)
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ASIO_NOEXCEPT
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{
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return Associator<Handler, DefaultCandidate>::get(h.handler_);
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}
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static ASIO_AUTO_RETURN_TYPE_PREFIX2(
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typename Associator<Handler, DefaultCandidate>::type)
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get(const detail::deferred_sequence_handler<Handler, Tail>& h,
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const DefaultCandidate& c) ASIO_NOEXCEPT
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ASIO_AUTO_RETURN_TYPE_SUFFIX((
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Associator<Handler, DefaultCandidate>::get(h.handler_, c)))
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{
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return Associator<Handler, DefaultCandidate>::get(h.handler_, c);
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}
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};
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#endif // !defined(GENERATING_DOCUMENTATION)
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} // namespace asio
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#include "asio/detail/pop_options.hpp"
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#endif // ASIO_IMPL_DEFERRED_HPP
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