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#ifndef BOOST_SERIALIZATION_VERSION_HPP
#define BOOST_SERIALIZATION_VERSION_HPP
// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// version.hpp:
// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
// Use, modification and distribution is subject to 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 for updates, documentation, and revision history.
#include <boost/config.hpp>
#include <boost/mpl/assert.hpp>
#include <boost/mpl/int.hpp>
#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/mpl/integral_c_tag.hpp>
#include <boost/type_traits/is_base_and_derived.hpp>
namespace boost {
namespace serialization {
struct basic_traits;
// default version number is 0. Override with higher version
// when class definition changes.
template<class T>
struct version
{
template<class U>
struct traits_class_version {
typedef BOOST_DEDUCED_TYPENAME U::version type;
};
typedef mpl::integral_c_tag tag;
// note: at least one compiler complained w/o the full qualification
// on basic traits below
typedef
BOOST_DEDUCED_TYPENAME mpl::eval_if<
is_base_and_derived<boost::serialization::basic_traits,T>,
traits_class_version< T >,
mpl::int_<0>
>::type type;
BOOST_STATIC_CONSTANT(int, value = version::type::value);
};
#ifndef BOOST_NO_INCLASS_MEMBER_INITIALIZATION
template<class T>
const int version<T>::value;
#endif
} // namespace serialization
} // namespace boost
/* note: at first it seemed that this would be a good place to trap
* as an error an attempt to set a version # for a class which doesn't
* save its class information (including version #) in the archive.
* However, this imposes a requirement that the version be set after
* the implemention level which would be pretty confusing. If this
* is to be done, do this check in the input or output operators when
* ALL the serialization traits are available. Included the implementation
* here with this comment as a reminder not to do this!
*/
//#include <boost/serialization/level.hpp>
//#include <boost/mpl/equal_to.hpp>
#include <boost/mpl/less.hpp>
#include <boost/mpl/comparison.hpp>
// specify the current version number for the class
// version numbers limited to 8 bits !!!
#define BOOST_CLASS_VERSION(T, N) \
namespace boost { \
namespace serialization { \
template<> \
struct version<T > \
{ \
typedef mpl::int_<N> type; \
typedef mpl::integral_c_tag tag; \
BOOST_STATIC_CONSTANT(int, value = version::type::value); \
BOOST_MPL_ASSERT(( \
boost::mpl::less< \
boost::mpl::int_<N>, \
boost::mpl::int_<256> \
> \
)); \
/* \
BOOST_MPL_ASSERT(( \
mpl::equal_to< \
:implementation_level<T >, \
mpl::int_<object_class_info> \
>::value \
)); \
*/ \
}; \
} \
}
#endif // BOOST_SERIALIZATION_VERSION_HPP
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