text: //
  // experimental/detail/channel_handler.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_HANDLER_HPP
  #define ASIO_EXPERIMENTAL_DETAIL_CHANNEL_HANDLER_HPP
  
  #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  # pragma once
  #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  
  #include "asio/detail/config.hpp"
  #include "asio/associator.hpp"
  #include "asio/experimental/detail/channel_payload.hpp"
  
  #include "asio/detail/push_options.hpp"
  
  namespace asio {
  namespace experimental {
  namespace detail {
  
  template <typename Payload, typename Handler>
  class channel_handler
  {
  public:
    channel_handler(ASIO_MOVE_ARG(Payload) p, Handler& h)
      : payload_(ASIO_MOVE_CAST(Payload)(p)),
        handler_(ASIO_MOVE_CAST(Handler)(h))
    {
    }
  
    void operator()()
    {
      payload_.receive(handler_);
    }
  
  //private:
    Payload payload_;
    Handler handler_;
  };
  
  } // namespace detail
  } // namespace experimental
  
  template <template <typename, typename> class Associator,
      typename Payload, typename Handler, typename DefaultCandidate>
  struct associator<Associator,
      experimental::detail::channel_handler<Payload, Handler>,
      DefaultCandidate>
    : Associator<Handler, DefaultCandidate>
  {
    static typename Associator<Handler, DefaultCandidate>::type get(
        const experimental::detail::channel_handler<Payload, Handler>& h,
        const DefaultCandidate& c = DefaultCandidate()) ASIO_NOEXCEPT
    {
      return Associator<Handler, DefaultCandidate>::get(h.handler_, c);
    }
  };
  
  } // namespace asio
  
  #include "asio/detail/pop_options.hpp"
  
  #endif // ASIO_EXPERIMENTAL_DETAIL_CHANNEL_HANDLER_HPP
  