Chris@101: /* Copyright 2003-2013 Joaquin M Lopez Munoz.
Chris@16:  * Distributed under the Boost Software License, Version 1.0.
Chris@16:  * (See accompanying file LICENSE_1_0.txt or copy at
Chris@16:  * http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  *
Chris@16:  * See http://www.boost.org/libs/multi_index for library home page.
Chris@16:  */
Chris@16: 
Chris@16: #ifndef BOOST_MULTI_INDEX_DETAIL_SERIALIZATION_VERSION_HPP
Chris@16: #define BOOST_MULTI_INDEX_DETAIL_SERIALIZATION_VERSION_HPP
Chris@16: 
Chris@101: #if defined(_MSC_VER)
Chris@16: #pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
Chris@16: #include <boost/serialization/split_member.hpp>
Chris@16: #include <boost/serialization/version.hpp>
Chris@16: 
Chris@16: namespace boost{
Chris@16: 
Chris@16: namespace multi_index{
Chris@16: 
Chris@16: namespace detail{
Chris@16: 
Chris@16: /* Helper class for storing and retrieving a given type serialization class
Chris@16:  * version while avoiding saving the number multiple times in the same
Chris@16:  * archive.
Chris@16:  * Behavior undefined if template partial specialization is not supported.
Chris@16:  */
Chris@16: 
Chris@16: template<typename T>
Chris@16: struct serialization_version
Chris@16: {
Chris@16:   serialization_version():
Chris@16:     value(boost::serialization::version<serialization_version>::value){}
Chris@16: 
Chris@16:   serialization_version& operator=(unsigned int x){value=x;return *this;};
Chris@16: 
Chris@16:   operator unsigned int()const{return value;}
Chris@16: 
Chris@16: private:
Chris@16:   friend class boost::serialization::access;
Chris@16: 
Chris@16:   BOOST_SERIALIZATION_SPLIT_MEMBER()
Chris@16: 
Chris@16:   template<class Archive>
Chris@16:   void save(Archive&,const unsigned int)const{}
Chris@16: 
Chris@16:   template<class Archive>
Chris@16:   void load(Archive&,const unsigned int version)
Chris@16:   {
Chris@16:     this->value=version;
Chris@16:   }
Chris@16: 
Chris@16:   unsigned int value;
Chris@16: };
Chris@16: 
Chris@16: } /* namespace multi_index::detail */
Chris@16: 
Chris@16: } /* namespace multi_index */
Chris@16: 
Chris@16: namespace serialization {
Chris@16: template<typename T>
Chris@16: struct version<boost::multi_index::detail::serialization_version<T> >
Chris@16: {
Chris@16:   BOOST_STATIC_CONSTANT(int,value=version<T>::value);
Chris@16: };
Chris@16: } /* namespace serialization */
Chris@16: 
Chris@16: } /* namespace boost */
Chris@16: 
Chris@16: #endif