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