ceph/src/boost/libs/serialization/include/boost/serialization/ephemeral.hpp

   1 #ifndef BOOST_SERIALIZATION_EPHEMERAL_HPP
   2 #define BOOST_SERIALIZATION_EPHEMERAL_HPP
   3
   4 // MS compatible compilers support
   5 #pragma once
   6 #if defined(_MSC_VER)
   7 # pragma once
   8 #endif
   9
  10 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
  11 // ephemeral_object.hpp: interface for serialization system.
  12
  13 // (C) Copyright 2007 Matthias Troyer.
  14 // Use, modification and distribution is subject to the Boost Software
  15 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  16 // http://www.boost.org/LICENSE_1_0.txt)
  17
  18 //  See http://www.boost.org for updates, documentation, and revision history.
  19
  20 #include <utility>
  21
  22 #include <boost/config.hpp>
  23 #include <boost/detail/workaround.hpp>
  24
  25 #include <boost/mpl/integral_c.hpp>
  26 #include <boost/mpl/integral_c_tag.hpp>
  27
  28 #include <boost/serialization/level.hpp>
  29 #include <boost/serialization/tracking.hpp>
  30 #include <boost/serialization/split_member.hpp>
  31 #include <boost/serialization/base_object.hpp>
  32 #include <boost/serialization/traits.hpp>
  33 #include <boost/serialization/wrapper.hpp>
  34
  35 namespace boost {
  36 namespace serialization {
  37
  38 template<class T>
  39 struct ephemeral_object :
  40     public wrapper_traits<ephemeral_object<T> >
  41 {
  42     explicit ephemeral_object(T& t) :
  43         val(t)
  44     {}
  45
  46     T & value() const {
  47         return val;
  48     }
  49
  50     const T & const_value() const {
  51         return val;
  52     }
  53
  54     template<class Archive>
  55     void serialize(Archive &ar, const unsigned int) const
  56     {
  57        ar & val;
  58     }
  59
  60 private:
  61     T & val;
  62 };
  63
  64 template<class T>
  65 inline
  66 const ephemeral_object<T> ephemeral(const char * name, T & t){
  67     return ephemeral_object<T>(name, t);
  68 }
  69
  70 } // seralization
  71 } // boost
  72
  73 #endif // BOOST_SERIALIZATION_EPHEMERAL_HPP