// // detail/completion_payload_handler.hpp // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // // Copyright (c) 2003-2024 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_DETAIL_COMPLETION_PAYLOAD_HANDLER_HPP #define BOOST_ASIO_DETAIL_COMPLETION_PAYLOAD_HANDLER_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/associator.hpp> #include <boost/asio/detail/push_options.hpp> namespace boost { namespace asio { namespace detail { template <typename Payload, typename Handler> class completion_payload_handler { public: completion_payload_handler(Payload&& p, Handler& h) : payload_(static_cast<Payload&&>(p)), handler_(static_cast<Handler&&>(h)) { } void operator()() { payload_.receive(handler_); } Handler& handler() { return handler_; } //private: Payload payload_; Handler handler_; }; } // namespace detail template <template <typename, typename> class Associator, typename Payload, typename Handler, typename DefaultCandidate> struct associator<Associator, detail::completion_payload_handler<Payload, Handler>, DefaultCandidate> : Associator<Handler, DefaultCandidate> { static typename Associator<Handler, DefaultCandidate>::type get( const detail::completion_payload_handler<Payload, Handler>& h) noexcept { return Associator<Handler, DefaultCandidate>::get(h.handler_); } static auto get( const detail::completion_payload_handler<Payload, Handler>& h, const DefaultCandidate& c) noexcept -> decltype(Associator<Handler, DefaultCandidate>::get(h.handler_, c)) { return Associator<Handler, DefaultCandidate>::get(h.handler_, c); } }; } // namespace asio } // namespace boost #include <boost/asio/detail/pop_options.hpp> #endif // BOOST_ASIO_DETAIL_COMPLETION_PAYLOAD_HANDLER_HPP