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#ifndef BOOST_SERIALIZATION_TRACKING_HPP
#define BOOST_SERIALIZATION_TRACKING_HPP
// MS compatible compilers support #pragma once
#if defined(_MSC_VER)
# pragma once
#endif
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// tracking.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/static_assert.hpp>
#include <boost/mpl/eval_if.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/mpl/int.hpp>
#include <boost/mpl/equal_to.hpp>
#include <boost/mpl/greater.hpp>
#include <boost/mpl/integral_c_tag.hpp>
#include <boost/type_traits/is_base_and_derived.hpp>
#include <boost/type_traits/is_pointer.hpp>
#include <boost/serialization/level.hpp>
#include <boost/serialization/tracking_enum.hpp>
#include <boost/serialization/type_info_implementation.hpp>
namespace boost {
namespace serialization {
struct basic_traits;
// default tracking level
template<class T>
struct tracking_level_impl {
template<class U>
struct traits_class_tracking {
typedef typename U::tracking type;
};
typedef mpl::integral_c_tag tag;
// note: at least one compiler complained w/o the full qualification
// on basic traits below
typedef
typename mpl::eval_if<
is_base_and_derived<boost::serialization::basic_traits, T>,
traits_class_tracking< T >,
//else
typename mpl::eval_if<
is_pointer< T >,
// pointers are not tracked by default
mpl::int_<track_never>,
//else
typename mpl::eval_if<
// for primitives
typename mpl::equal_to<
implementation_level< T >,
mpl::int_<primitive_type>
>,
// is never
mpl::int_<track_never>,
// otherwise its selective
mpl::int_<track_selectively>
> > >::type type;
BOOST_STATIC_CONSTANT(int, value = type::value);
};
template<class T>
struct tracking_level :
public tracking_level_impl<const T>
{
};
template<class T, enum tracking_type L>
inline bool operator>=(tracking_level< T > t, enum tracking_type l)
{
return t.value >= (int)l;
}
} // namespace serialization
} // namespace boost
// The STATIC_ASSERT is prevents one from setting tracking for a primitive type.
// This almost HAS to be an error. Doing this will effect serialization of all
// char's in your program which is almost certainly what you don't want to do.
// If you want to track all instances of a given primitive type, You'll have to
// wrap it in your own type so its not a primitive anymore. Then it will compile
// without problem.
#define BOOST_CLASS_TRACKING(T, E) \
namespace boost { \
namespace serialization { \
template<> \
struct tracking_level< T > \
{ \
typedef mpl::integral_c_tag tag; \
typedef mpl::int_< E> type; \
BOOST_STATIC_CONSTANT( \
int, \
value = tracking_level::type::value \
); \
/* tracking for a class */ \
BOOST_STATIC_ASSERT(( \
mpl::greater< \
/* that is a prmitive */ \
implementation_level< T >, \
mpl::int_<primitive_type> \
>::value \
)); \
}; \
}}
#endif // BOOST_SERIALIZATION_TRACKING_HPP
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