1 //
2 // async_result.hpp
3 // ~~~~~~~~~~~~~~~~
4 //
5 // Copyright (c) 2003-2019 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 ARCHETYPES_DEPRECATED_ASYNC_RESULT_HPP
12 #define ARCHETYPES_DEPRECATED_ASYNC_RESULT_HPP
13 
14 #include <boost/asio/async_result.hpp>
15 
16 #if !defined(BOOST_ASIO_NO_DEPRECATED)
17 
18 #include <boost/asio/handler_type.hpp>
19 
20 namespace archetypes {
21 
22 struct deprecated_lazy_handler
23 {
24 };
25 
26 struct deprecated_concrete_handler
27 {
deprecated_concrete_handlerarchetypes::deprecated_concrete_handler28   deprecated_concrete_handler(deprecated_lazy_handler)
29   {
30   }
31 
32   template <typename Arg1>
operator ()archetypes::deprecated_concrete_handler33   void operator()(Arg1)
34   {
35   }
36 
37   template <typename Arg1, typename Arg2>
operator ()archetypes::deprecated_concrete_handler38   void operator()(Arg1, Arg2)
39   {
40   }
41 
42 #if defined(BOOST_ASIO_HAS_MOVE)
deprecated_concrete_handlerarchetypes::deprecated_concrete_handler43   deprecated_concrete_handler(deprecated_concrete_handler&&) {}
44 private:
45   deprecated_concrete_handler(const deprecated_concrete_handler&);
46 #endif // defined(BOOST_ASIO_HAS_MOVE)
47 };
48 
49 } // namespace archetypes
50 
51 namespace boost {
52 namespace asio {
53 
54 template <typename Signature>
55 struct handler_type<archetypes::deprecated_lazy_handler, Signature>
56 {
57   typedef archetypes::deprecated_concrete_handler type;
58 };
59 
60 template <>
61 class async_result<archetypes::deprecated_concrete_handler>
62 {
63 public:
64   // The return type of the initiating function.
65   typedef double type;
66 
67   // Construct an async_result from a given handler.
async_result(archetypes::deprecated_concrete_handler &)68   explicit async_result(archetypes::deprecated_concrete_handler&)
69   {
70   }
71 
72   // Obtain the value to be returned from the initiating function.
get()73   type get()
74   {
75     return 42;
76   }
77 };
78 
79 } // namespace asio
80 } // namespace boost
81 
82 #endif // !defined(BOOST_ASIO_NO_DEPRECATED)
83 
84 #endif // ARCHETYPES_DEPRECATED_ASYNC_RESULT_HPP
85