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+//
+// experimental/impl/deferred.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_IMPL_DEFERRED_HPP
+#define ASIO_EXPERIMENTAL_IMPL_DEFERRED_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+
+#if !defined(GENERATING_DOCUMENTATION)
+
+template <typename R, typename... Args>
+class async_result<
+ experimental::detail::deferred_signature_probe, R(Args...)>
+{
+public:
+ typedef experimental::detail::deferred_signature_probe_result<void(Args...)>
+ return_type;
+
+ template <typename Initiation, typename... InitArgs>
+ static return_type initiate(
+ ASIO_MOVE_ARG(Initiation),
+ experimental::detail::deferred_signature_probe,
+ ASIO_MOVE_ARG(InitArgs)...)
+ {
+ return return_type{};
+ }
+};
+
+template <typename Signature>
+class async_result<experimental::deferred_t, Signature>
+{
+public:
+ template <typename Initiation, typename... InitArgs>
+ static experimental::deferred_async_operation<
+ Signature, Initiation, InitArgs...>
+ initiate(ASIO_MOVE_ARG(Initiation) initiation,
+ experimental::deferred_t, ASIO_MOVE_ARG(InitArgs)... args)
+ {
+ return experimental::deferred_async_operation<
+ Signature, Initiation, InitArgs...>(
+ experimental::deferred_init_tag{},
+ ASIO_MOVE_CAST(Initiation)(initiation),
+ ASIO_MOVE_CAST(InitArgs)(args)...);
+ }
+};
+
+template <typename Function, typename R, typename... Args>
+class async_result<
+ experimental::deferred_function<Function>, R(Args...)>
+{
+public:
+ template <typename Initiation, typename... InitArgs>
+ static auto initiate(ASIO_MOVE_ARG(Initiation) initiation,
+ experimental::deferred_function<Function> token,
+ ASIO_MOVE_ARG(InitArgs)... init_args)
+ {
+ return experimental::deferred_sequence<
+ experimental::deferred_async_operation<
+ R(Args...), Initiation, InitArgs...>,
+ Function>(experimental::deferred_init_tag{},
+ experimental::deferred_async_operation<
+ R(Args...), Initiation, InitArgs...>(
+ experimental::deferred_init_tag{},
+ ASIO_MOVE_CAST(Initiation)(initiation),
+ ASIO_MOVE_CAST(InitArgs)(init_args)...),
+ ASIO_MOVE_CAST(Function)(token.function_));
+ }
+};
+
+template <template <typename, typename> class Associator,
+ typename Handler, typename Tail, typename DefaultCandidate>
+struct associator<Associator,
+ experimental::detail::deferred_sequence_handler<Handler, Tail>,
+ DefaultCandidate>
+ : Associator<Handler, DefaultCandidate>
+{
+ static typename Associator<Handler, DefaultCandidate>::type get(
+ const experimental::detail::deferred_sequence_handler<Handler, Tail>& h,
+ const DefaultCandidate& c = DefaultCandidate()) ASIO_NOEXCEPT
+ {
+ return Associator<Handler, DefaultCandidate>::get(h.handler_, c);
+ }
+};
+
+#endif // !defined(GENERATING_DOCUMENTATION)
+
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // ASIO_EXPERIMENTAL_IMPL_DEFERRED_HPP