ceph/src/boost/boost/asio/experimental/impl/deferred.hpp

   1 //
   2 // experimental/impl/deferred.hpp
   3 // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   4 //
   5 // Copyright (c) 2003-2022 Christopher M. Kohlhoff (chris at kohlhoff dot com)
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9 //
  10
  11 #ifndef BOOST_ASIO_EXPERIMENTAL_IMPL_DEFERRED_HPP
  12 #define BOOST_ASIO_EXPERIMENTAL_IMPL_DEFERRED_HPP
  13
  14 #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  15 # pragma once
  16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  17
  18 #include <boost/asio/detail/push_options.hpp>
  19
  20 namespace boost {
  21 namespace asio {
  22
  23 #if !defined(GENERATING_DOCUMENTATION)
  24
  25 template <typename R, typename... Args>
  26 class async_result<
  27     experimental::detail::deferred_signature_probe, R(Args...)>
  28 {
  29 public:
  30   typedef experimental::detail::deferred_signature_probe_result<void(Args...)>
  31     return_type;
  32
  33   template <typename Initiation, typename... InitArgs>
  34   static return_type initiate(
  35       BOOST_ASIO_MOVE_ARG(Initiation),
  36       experimental::detail::deferred_signature_probe,
  37       BOOST_ASIO_MOVE_ARG(InitArgs)...)
  38   {
  39     return return_type{};
  40   }
  41 };
  42
  43 template <typename Signature>
  44 class async_result<experimental::deferred_t, Signature>
  45 {
  46 public:
  47   template <typename Initiation, typename... InitArgs>
  48   static experimental::deferred_async_operation<
  49       Signature, Initiation, InitArgs...>
  50   initiate(BOOST_ASIO_MOVE_ARG(Initiation) initiation,
  51       experimental::deferred_t, BOOST_ASIO_MOVE_ARG(InitArgs)... args)
  52   {
  53     return experimental::deferred_async_operation<
  54         Signature, Initiation, InitArgs...>(
  55           experimental::deferred_init_tag{},
  56           BOOST_ASIO_MOVE_CAST(Initiation)(initiation),
  57           BOOST_ASIO_MOVE_CAST(InitArgs)(args)...);
  58     }
  59 };
  60
  61 template <typename Function, typename R, typename... Args>
  62 class async_result<
  63     experimental::deferred_function<Function>, R(Args...)>
  64 {
  65 public:
  66   template <typename Initiation, typename... InitArgs>
  67   static auto initiate(BOOST_ASIO_MOVE_ARG(Initiation) initiation,
  68       experimental::deferred_function<Function> token,
  69       BOOST_ASIO_MOVE_ARG(InitArgs)... init_args)
  70   {
  71     return experimental::deferred_sequence<
  72         experimental::deferred_async_operation<
  73           R(Args...), Initiation, InitArgs...>,
  74         Function>(experimental::deferred_init_tag{},
  75           experimental::deferred_async_operation<
  76             R(Args...), Initiation, InitArgs...>(
  77               experimental::deferred_init_tag{},
  78               BOOST_ASIO_MOVE_CAST(Initiation)(initiation),
  79               BOOST_ASIO_MOVE_CAST(InitArgs)(init_args)...),
  80           BOOST_ASIO_MOVE_CAST(Function)(token.function_));
  81   }
  82 };
  83
  84 template <template <typename, typename> class Associator,
  85     typename Handler, typename Tail, typename DefaultCandidate>
  86 struct associator<Associator,
  87     experimental::detail::deferred_sequence_handler<Handler, Tail>,
  88     DefaultCandidate>
  89   : Associator<Handler, DefaultCandidate>
  90 {
  91   static typename Associator<Handler, DefaultCandidate>::type get(
  92       const experimental::detail::deferred_sequence_handler<Handler, Tail>& h,
  93       const DefaultCandidate& c = DefaultCandidate()) BOOST_ASIO_NOEXCEPT
  94   {
  95     return Associator<Handler, DefaultCandidate>::get(h.handler_, c);
  96   }
  97 };
  98
  99 #endif // !defined(GENERATING_DOCUMENTATION)
 100
 101 } // namespace asio
 102 } // namespace boost
 103
 104 #include <boost/asio/detail/pop_options.hpp>
 105
 106 #endif // BOOST_ASIO_EXPERIMENTAL_IMPL_DEFERRED_HPP