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75 lines
1.8 KiB
75 lines
1.8 KiB
/* Copyright 2003-2010 Joaquin M Lopez Munoz. |
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* Distributed under the Boost Software License, Version 1.0. |
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* (See accompanying file LICENSE_1_0.txt or copy at |
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* http://www.boost.org/LICENSE_1_0.txt) |
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* |
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* See http://www.boost.org/libs/multi_index for library home page. |
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*/ |
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#ifndef BOOST_MULTI_INDEX_DETAIL_SERIALIZATION_VERSION_HPP |
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#define BOOST_MULTI_INDEX_DETAIL_SERIALIZATION_VERSION_HPP |
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#if defined(_MSC_VER)&&(_MSC_VER>=1200) |
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#pragma once |
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#endif |
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#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */ |
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#include <boost/serialization/split_member.hpp> |
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#include <boost/serialization/version.hpp> |
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namespace boost{ |
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namespace multi_index{ |
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namespace detail{ |
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/* Helper class for storing and retrieving a given type serialization class |
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* version while avoiding saving the number multiple times in the same |
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* archive. |
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* Behavior undefined if template partial specialization is not supported. |
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*/ |
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template<typename T> |
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struct serialization_version |
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{ |
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serialization_version(): |
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value(boost::serialization::version<serialization_version>::value){} |
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serialization_version& operator=(unsigned int x){value=x;return *this;}; |
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operator unsigned int()const{return value;} |
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private: |
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friend class boost::serialization::access; |
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BOOST_SERIALIZATION_SPLIT_MEMBER() |
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template<class Archive> |
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void save(Archive&,const unsigned int)const{} |
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template<class Archive> |
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void load(Archive&,const unsigned int version) |
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{ |
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this->value=version; |
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} |
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unsigned int value; |
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}; |
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} /* namespace multi_index::detail */ |
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} /* namespace multi_index */ |
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#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
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namespace serialization { |
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template<typename T> |
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struct version<boost::multi_index::detail::serialization_version<T> > |
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{ |
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BOOST_STATIC_CONSTANT(int,value=version<T>::value); |
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}; |
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} /* namespace serialization */ |
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#endif |
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} /* namespace boost */ |
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#endif
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