| // |
| // experimental/detail/channel_message.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2021 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 ASIO_EXPERIMENTAL_DETAIL_CHANNEL_MESSAGE_HPP |
| #define ASIO_EXPERIMENTAL_DETAIL_CHANNEL_MESSAGE_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include "asio/detail/config.hpp" |
| #include <tuple> |
| #include "asio/detail/type_traits.hpp" |
| |
| #include "asio/detail/push_options.hpp" |
| |
| namespace asio { |
| namespace experimental { |
| namespace detail { |
| |
| template <typename Signature> |
| class channel_message; |
| |
| template <typename R> |
| class channel_message<R()> |
| { |
| public: |
| channel_message(int) |
| { |
| } |
| |
| template <typename Handler> |
| void receive(Handler& handler) |
| { |
| ASIO_MOVE_OR_LVALUE(Handler)(handler)(); |
| } |
| }; |
| |
| template <typename R, typename Arg0> |
| class channel_message<R(Arg0)> |
| { |
| public: |
| template <typename T0> |
| channel_message(int, ASIO_MOVE_ARG(T0) t0) |
| : arg0_(ASIO_MOVE_CAST(T0)(t0)) |
| { |
| } |
| |
| template <typename Handler> |
| void receive(Handler& handler) |
| { |
| ASIO_MOVE_OR_LVALUE(Handler)(handler)( |
| ASIO_MOVE_CAST(arg0_type)(arg0_)); |
| } |
| |
| private: |
| typedef typename decay<Arg0>::type arg0_type; |
| arg0_type arg0_; |
| }; |
| |
| template <typename R, typename Arg0, typename Arg1> |
| class channel_message<R(Arg0, Arg1)> |
| { |
| public: |
| template <typename T0, typename T1> |
| channel_message(int, ASIO_MOVE_ARG(T0) t0, ASIO_MOVE_ARG(T1) t1) |
| : arg0_(ASIO_MOVE_CAST(T0)(t0)), |
| arg1_(ASIO_MOVE_CAST(T1)(t1)) |
| { |
| } |
| |
| template <typename Handler> |
| void receive(Handler& handler) |
| { |
| ASIO_MOVE_OR_LVALUE(Handler)(handler)( |
| ASIO_MOVE_CAST(arg0_type)(arg0_), |
| ASIO_MOVE_CAST(arg1_type)(arg1_)); |
| } |
| |
| private: |
| typedef typename decay<Arg0>::type arg0_type; |
| arg0_type arg0_; |
| typedef typename decay<Arg1>::type arg1_type; |
| arg1_type arg1_; |
| }; |
| |
| template <typename R, typename... Args> |
| class channel_message<R(Args...)> |
| { |
| public: |
| template <typename... T> |
| channel_message(int, ASIO_MOVE_ARG(T)... t) |
| : args_(ASIO_MOVE_CAST(T)(t)...) |
| { |
| } |
| |
| template <typename Handler> |
| void receive(Handler& h) |
| { |
| std::apply(ASIO_MOVE_OR_LVALUE(Handler)(h), |
| ASIO_MOVE_CAST(args_type)(args_)); |
| } |
| |
| private: |
| typedef std::tuple<typename decay<Args>::type...> args_type; |
| args_type args_; |
| }; |
| |
| } // namespace detail |
| } // namespace experimental |
| } // namespace asio |
| |
| #include "asio/detail/pop_options.hpp" |
| |
| #endif // ASIO_EXPERIMENTAL_DETAIL_CHANNEL_MESSAGE_HPP |