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submit_receiver.hpp
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// // execution/detail/submit_receiver.hpp // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // // Copyright (c) 2003-2020 Christopher M. Kohlhoff (chris at kohlhoff dot com) // // Distributed under the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) // #ifndef BOOST_ASIO_EXECUTION_DETAIL_SUBMIT_RECEIVER_HPP #define BOOST_ASIO_EXECUTION_DETAIL_SUBMIT_RECEIVER_HPP #if defined(_MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) #include <boost/asio/detail/config.hpp> #include <boost/asio/detail/type_traits.hpp> #include <boost/asio/detail/variadic_templates.hpp> #include <boost/asio/execution/connect.hpp> #include <boost/asio/execution/receiver.hpp> #include <boost/asio/execution/set_done.hpp> #include <boost/asio/execution/set_error.hpp> #include <boost/asio/execution/set_value.hpp> #include <boost/asio/traits/set_done_member.hpp> #include <boost/asio/traits/set_error_member.hpp> #include <boost/asio/traits/set_value_member.hpp> #include <boost/asio/detail/push_options.hpp> namespace boost { namespace asio { namespace execution { namespace detail { template <typename Sender, typename Receiver> struct submit_receiver; template <typename Sender, typename Receiver> struct submit_receiver_wrapper { submit_receiver<Sender, Receiver>* p_; explicit submit_receiver_wrapper(submit_receiver<Sender, Receiver>* p) : p_(p) { } #if defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES) template <typename... Args> typename enable_if<is_receiver_of<Receiver, Args...>::value>::type set_value(BOOST_ASIO_MOVE_ARG(Args)... args) BOOST_ASIO_RVALUE_REF_QUAL BOOST_ASIO_NOEXCEPT_IF((is_nothrow_receiver_of<Receiver, Args...>::value)) { execution::set_value( BOOST_ASIO_MOVE_OR_LVALUE( typename remove_cvref<Receiver>::type)(p_->r_), BOOST_ASIO_MOVE_CAST(Args)(args)...); delete p_; } #else // defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES) void set_value() BOOST_ASIO_RVALUE_REF_QUAL BOOST_ASIO_NOEXCEPT_IF((is_nothrow_receiver_of<Receiver>::value)) { execution::set_value( BOOST_ASIO_MOVE_OR_LVALUE( typename remove_cvref<Receiver>::type)(p_->r_)); delete p_; } #define BOOST_ASIO_PRIVATE_SUBMIT_RECEIVER_SET_VALUE_DEF(n) \ template <BOOST_ASIO_VARIADIC_TPARAMS(n)> \ typename enable_if<is_receiver_of<Receiver, \ BOOST_ASIO_VARIADIC_TARGS(n)>::value>::type \ set_value(BOOST_ASIO_VARIADIC_MOVE_PARAMS(n)) BOOST_ASIO_RVALUE_REF_QUAL \ BOOST_ASIO_NOEXCEPT_IF((is_nothrow_receiver_of< \ Receiver, BOOST_ASIO_VARIADIC_TARGS(n)>::value)) \ { \ execution::set_value( \ BOOST_ASIO_MOVE_OR_LVALUE( \ typename remove_cvref<Receiver>::type)(p_->r_), \ BOOST_ASIO_VARIADIC_MOVE_ARGS(n)); \ delete p_; \ } \ /**/ BOOST_ASIO_VARIADIC_GENERATE(BOOST_ASIO_PRIVATE_SUBMIT_RECEIVER_SET_VALUE_DEF) #undef BOOST_ASIO_PRIVATE_SUBMIT_RECEIVER_SET_VALUE_DEF #endif // defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES) template <typename E> void set_error(BOOST_ASIO_MOVE_ARG(E) e) BOOST_ASIO_RVALUE_REF_QUAL BOOST_ASIO_NOEXCEPT { execution::set_error( BOOST_ASIO_MOVE_OR_LVALUE( typename remove_cvref<Receiver>::type)(p_->r_), BOOST_ASIO_MOVE_CAST(E)(e)); delete p_; } void set_done() BOOST_ASIO_RVALUE_REF_QUAL BOOST_ASIO_NOEXCEPT { execution::set_done( BOOST_ASIO_MOVE_OR_LVALUE( typename remove_cvref<Receiver>::type)(p_->r_)); delete p_; } }; template <typename Sender, typename Receiver> struct submit_receiver { typename remove_cvref<Receiver>::type r_; #if defined(BOOST_ASIO_HAS_MOVE) typename connect_result<Sender, submit_receiver_wrapper<Sender, Receiver> >::type state_; #else // defined(BOOST_ASIO_HAS_MOVE) typename connect_result<Sender, const submit_receiver_wrapper<Sender, Receiver>& >::type state_; #endif // defined(BOOST_ASIO_HAS_MOVE) #if defined(BOOST_ASIO_HAS_MOVE) template <typename S, typename R> explicit submit_receiver(BOOST_ASIO_MOVE_ARG(S) s, BOOST_ASIO_MOVE_ARG(R) r) : r_(BOOST_ASIO_MOVE_CAST(R)(r)), state_(execution::connect(BOOST_ASIO_MOVE_CAST(S)(s), submit_receiver_wrapper<Sender, Receiver>(this))) { } #else // defined(BOOST_ASIO_HAS_MOVE) explicit submit_receiver(Sender s, Receiver r) : r_(r), state_(execution::connect(s, submit_receiver_wrapper<Sender, Receiver>(this))) { } #endif // defined(BOOST_ASIO_HAS_MOVE) }; } // namespace detail } // namespace execution namespace traits { #if !defined(BOOST_ASIO_HAS_DEDUCED_SET_VALUE_MEMBER_TRAIT) #if defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES) template <typename Sender, typename Receiver, typename... Args> struct set_value_member< boost::asio::execution::detail::submit_receiver_wrapper< Sender, Receiver>, void(Args...)> { BOOST_ASIO_STATIC_CONSTEXPR(bool, is_valid = true); BOOST_ASIO_STATIC_CONSTEXPR(bool, is_noexcept = (boost::asio::execution::is_nothrow_receiver_of<Receiver, Args...>::value)); typedef void result_type; }; #else // defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES) template <typename Sender, typename Receiver> struct set_value_member< boost::asio::execution::detail::submit_receiver_wrapper< Sender, Receiver>, void()> { BOOST_ASIO_STATIC_CONSTEXPR(bool, is_valid = true); BOOST_ASIO_STATIC_CONSTEXPR(bool, is_noexcept = boost::asio::execution::is_nothrow_receiver_of<Receiver>::value); typedef void result_type; }; #define BOOST_ASIO_PRIVATE_SUBMIT_RECEIVER_TRAIT_DEF(n) \ template <typename Sender, typename Receiver, \ BOOST_ASIO_VARIADIC_TPARAMS(n)> \ struct set_value_member< \ boost::asio::execution::detail::submit_receiver_wrapper< \ Sender, Receiver>, \ void(BOOST_ASIO_VARIADIC_TARGS(n))> \ { \ BOOST_ASIO_STATIC_CONSTEXPR(bool, is_valid = true); \ BOOST_ASIO_STATIC_CONSTEXPR(bool, is_noexcept = \ (boost::asio::execution::is_nothrow_receiver_of<Receiver, \ BOOST_ASIO_VARIADIC_TARGS(n)>::value)); \ typedef void result_type; \ }; \ /**/ BOOST_ASIO_VARIADIC_GENERATE(BOOST_ASIO_PRIVATE_SUBMIT_RECEIVER_TRAIT_DEF) #undef BOOST_ASIO_PRIVATE_SUBMIT_RECEIVER_TRAIT_DEF #endif // defined(BOOST_ASIO_HAS_VARIADIC_TEMPLATES) #endif // !defined(BOOST_ASIO_HAS_DEDUCED_SET_VALUE_MEMBER_TRAIT) #if !defined(BOOST_ASIO_HAS_DEDUCED_SET_ERROR_MEMBER_TRAIT) template <typename Sender, typename Receiver, typename E> struct set_error_member< boost::asio::execution::detail::submit_receiver_wrapper< Sender, Receiver>, E> { BOOST_ASIO_STATIC_CONSTEXPR(bool, is_valid = true); BOOST_ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true); typedef void result_type; }; #endif // !defined(BOOST_ASIO_HAS_DEDUCED_SET_ERROR_MEMBER_TRAIT) #if !defined(BOOST_ASIO_HAS_DEDUCED_SET_DONE_MEMBER_TRAIT) template <typename Sender, typename Receiver> struct set_done_member< boost::asio::execution::detail::submit_receiver_wrapper< Sender, Receiver> > { BOOST_ASIO_STATIC_CONSTEXPR(bool, is_valid = true); BOOST_ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true); typedef void result_type; }; #endif // !defined(BOOST_ASIO_HAS_DEDUCED_SET_DONE_MEMBER_TRAIT) } // namespace traits } // namespace asio } // namespace boost #include <boost/asio/detail/pop_options.hpp> #endif // BOOST_ASIO_EXECUTION_DETAIL_SUBMIT_RECEIVER_HPP