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- //
- // async_result.hpp
- // ~~~~~~~~~~~~~~~~
- //
- // Copyright (c) 2003-2019 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 ARCHETYPES_DEPRECATED_ASYNC_RESULT_HPP
- #define ARCHETYPES_DEPRECATED_ASYNC_RESULT_HPP
- #include <boost/asio/async_result.hpp>
- #if !defined(BOOST_ASIO_NO_DEPRECATED)
- #include <boost/asio/handler_type.hpp>
- namespace archetypes {
- struct deprecated_lazy_handler
- {
- };
- struct deprecated_concrete_handler
- {
- deprecated_concrete_handler(deprecated_lazy_handler)
- {
- }
- template <typename Arg1>
- void operator()(Arg1)
- {
- }
- template <typename Arg1, typename Arg2>
- void operator()(Arg1, Arg2)
- {
- }
- #if defined(BOOST_ASIO_HAS_MOVE)
- deprecated_concrete_handler(deprecated_concrete_handler&&) {}
- private:
- deprecated_concrete_handler(const deprecated_concrete_handler&);
- #endif // defined(BOOST_ASIO_HAS_MOVE)
- };
- } // namespace archetypes
- namespace boost {
- namespace asio {
- template <typename Signature>
- struct handler_type<archetypes::deprecated_lazy_handler, Signature>
- {
- typedef archetypes::deprecated_concrete_handler type;
- };
- template <>
- class async_result<archetypes::deprecated_concrete_handler>
- {
- public:
- // The return type of the initiating function.
- typedef double type;
- // Construct an async_result from a given handler.
- explicit async_result(archetypes::deprecated_concrete_handler&)
- {
- }
- // Obtain the value to be returned from the initiating function.
- type get()
- {
- return 42;
- }
- };
- } // namespace asio
- } // namespace boost
- #endif // !defined(BOOST_ASIO_NO_DEPRECATED)
- #endif // ARCHETYPES_DEPRECATED_ASYNC_RESULT_HPP
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