234 lines
6.7 KiB
C++
234 lines
6.7 KiB
C++
//
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// execution/detail/submit_receiver.hpp
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// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2021 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_EXECUTION_DETAIL_SUBMIT_RECEIVER_HPP
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#define ASIO_EXECUTION_DETAIL_SUBMIT_RECEIVER_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/config.hpp"
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#include "asio/detail/type_traits.hpp"
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#include "asio/detail/variadic_templates.hpp"
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#include "asio/execution/connect.hpp"
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#include "asio/execution/receiver.hpp"
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#include "asio/execution/set_done.hpp"
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#include "asio/execution/set_error.hpp"
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#include "asio/execution/set_value.hpp"
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#include "asio/traits/set_done_member.hpp"
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#include "asio/traits/set_error_member.hpp"
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#include "asio/traits/set_value_member.hpp"
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#include "asio/detail/push_options.hpp"
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namespace asio {
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namespace execution {
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namespace detail {
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template <typename Sender, typename Receiver>
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struct submit_receiver;
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template <typename Sender, typename Receiver>
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struct submit_receiver_wrapper
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{
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submit_receiver<Sender, Receiver>* p_;
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explicit submit_receiver_wrapper(submit_receiver<Sender, Receiver>* p)
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: p_(p)
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{
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}
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#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
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template <typename... Args>
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typename enable_if<is_receiver_of<Receiver, Args...>::value>::type
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set_value(ASIO_MOVE_ARG(Args)... args) ASIO_RVALUE_REF_QUAL
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ASIO_NOEXCEPT_IF((is_nothrow_receiver_of<Receiver, Args...>::value))
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{
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execution::set_value(
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ASIO_MOVE_OR_LVALUE(
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typename remove_cvref<Receiver>::type)(p_->r_),
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ASIO_MOVE_CAST(Args)(args)...);
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delete p_;
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}
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#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
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void set_value() ASIO_RVALUE_REF_QUAL
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ASIO_NOEXCEPT_IF((is_nothrow_receiver_of<Receiver>::value))
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{
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execution::set_value(
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ASIO_MOVE_OR_LVALUE(
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typename remove_cvref<Receiver>::type)(p_->r_));
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delete p_;
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}
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#define ASIO_PRIVATE_SUBMIT_RECEIVER_SET_VALUE_DEF(n) \
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template <ASIO_VARIADIC_TPARAMS(n)> \
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typename enable_if<is_receiver_of<Receiver, \
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ASIO_VARIADIC_TARGS(n)>::value>::type \
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set_value(ASIO_VARIADIC_MOVE_PARAMS(n)) ASIO_RVALUE_REF_QUAL \
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ASIO_NOEXCEPT_IF((is_nothrow_receiver_of< \
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Receiver, ASIO_VARIADIC_TARGS(n)>::value)) \
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{ \
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execution::set_value( \
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ASIO_MOVE_OR_LVALUE( \
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typename remove_cvref<Receiver>::type)(p_->r_), \
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ASIO_VARIADIC_MOVE_ARGS(n)); \
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delete p_; \
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} \
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/**/
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ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_SUBMIT_RECEIVER_SET_VALUE_DEF)
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#undef ASIO_PRIVATE_SUBMIT_RECEIVER_SET_VALUE_DEF
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#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
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template <typename E>
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void set_error(ASIO_MOVE_ARG(E) e)
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ASIO_RVALUE_REF_QUAL ASIO_NOEXCEPT
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{
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execution::set_error(
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ASIO_MOVE_OR_LVALUE(
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typename remove_cvref<Receiver>::type)(p_->r_),
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ASIO_MOVE_CAST(E)(e));
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delete p_;
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}
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void set_done() ASIO_RVALUE_REF_QUAL ASIO_NOEXCEPT
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{
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execution::set_done(
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ASIO_MOVE_OR_LVALUE(
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typename remove_cvref<Receiver>::type)(p_->r_));
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delete p_;
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}
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};
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template <typename Sender, typename Receiver>
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struct submit_receiver
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{
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typename remove_cvref<Receiver>::type r_;
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#if defined(ASIO_HAS_MOVE)
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typename connect_result<Sender,
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submit_receiver_wrapper<Sender, Receiver> >::type state_;
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#else // defined(ASIO_HAS_MOVE)
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typename connect_result<Sender,
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const submit_receiver_wrapper<Sender, Receiver>& >::type state_;
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#endif // defined(ASIO_HAS_MOVE)
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#if defined(ASIO_HAS_MOVE)
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template <typename S, typename R>
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explicit submit_receiver(ASIO_MOVE_ARG(S) s, ASIO_MOVE_ARG(R) r)
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: r_(ASIO_MOVE_CAST(R)(r)),
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state_(execution::connect(ASIO_MOVE_CAST(S)(s),
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submit_receiver_wrapper<Sender, Receiver>(this)))
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{
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}
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#else // defined(ASIO_HAS_MOVE)
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explicit submit_receiver(Sender s, Receiver r)
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: r_(r),
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state_(execution::connect(s,
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submit_receiver_wrapper<Sender, Receiver>(this)))
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{
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}
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#endif // defined(ASIO_HAS_MOVE)
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};
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} // namespace detail
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} // namespace execution
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namespace traits {
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#if !defined(ASIO_HAS_DEDUCED_SET_VALUE_MEMBER_TRAIT)
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#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
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template <typename Sender, typename Receiver, typename... Args>
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struct set_value_member<
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asio::execution::detail::submit_receiver_wrapper<
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Sender, Receiver>,
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void(Args...)>
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{
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ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
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ASIO_STATIC_CONSTEXPR(bool, is_noexcept =
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(asio::execution::is_nothrow_receiver_of<Receiver, Args...>::value));
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typedef void result_type;
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};
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#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
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template <typename Sender, typename Receiver>
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struct set_value_member<
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asio::execution::detail::submit_receiver_wrapper<
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Sender, Receiver>,
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void()>
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{
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ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
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ASIO_STATIC_CONSTEXPR(bool, is_noexcept =
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asio::execution::is_nothrow_receiver_of<Receiver>::value);
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typedef void result_type;
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};
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#define ASIO_PRIVATE_SUBMIT_RECEIVER_TRAIT_DEF(n) \
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template <typename Sender, typename Receiver, \
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ASIO_VARIADIC_TPARAMS(n)> \
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struct set_value_member< \
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asio::execution::detail::submit_receiver_wrapper< \
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Sender, Receiver>, \
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void(ASIO_VARIADIC_TARGS(n))> \
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{ \
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ASIO_STATIC_CONSTEXPR(bool, is_valid = true); \
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ASIO_STATIC_CONSTEXPR(bool, is_noexcept = \
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(asio::execution::is_nothrow_receiver_of<Receiver, \
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ASIO_VARIADIC_TARGS(n)>::value)); \
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typedef void result_type; \
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}; \
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/**/
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ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_SUBMIT_RECEIVER_TRAIT_DEF)
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#undef ASIO_PRIVATE_SUBMIT_RECEIVER_TRAIT_DEF
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#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
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#endif // !defined(ASIO_HAS_DEDUCED_SET_VALUE_MEMBER_TRAIT)
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#if !defined(ASIO_HAS_DEDUCED_SET_ERROR_MEMBER_TRAIT)
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template <typename Sender, typename Receiver, typename E>
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struct set_error_member<
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asio::execution::detail::submit_receiver_wrapper<
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Sender, Receiver>, E>
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{
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ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
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ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
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typedef void result_type;
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};
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#endif // !defined(ASIO_HAS_DEDUCED_SET_ERROR_MEMBER_TRAIT)
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#if !defined(ASIO_HAS_DEDUCED_SET_DONE_MEMBER_TRAIT)
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template <typename Sender, typename Receiver>
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struct set_done_member<
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asio::execution::detail::submit_receiver_wrapper<
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Sender, Receiver> >
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{
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ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
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ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
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typedef void result_type;
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};
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#endif // !defined(ASIO_HAS_DEDUCED_SET_DONE_MEMBER_TRAIT)
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} // namespace traits
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} // namespace asio
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#include "asio/detail/pop_options.hpp"
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#endif // ASIO_EXECUTION_DETAIL_SUBMIT_RECEIVER_HPP
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