ceph/src/boost/libs/asio/test/archetypes/deprecated_async_result.hpp

   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 {
  28   deprecated_concrete_handler(deprecated_lazy_handler)
  29   {
  30   }
  31
  32   template <typename Arg1>
  33   void operator()(Arg1)
  34   {
  35   }
  36
  37   template <typename Arg1, typename Arg2>
  38   void operator()(Arg1, Arg2)
  39   {
  40   }
  41
  42 #if defined(BOOST_ASIO_HAS_MOVE)
  43   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.
  68   explicit async_result(archetypes::deprecated_concrete_handler&)
  69   {
  70   }
  71
  72   // Obtain the value to be returned from the initiating function.
  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