#ifndef BOOST_SERIALIZATION_TRACKING_HPP | |
#define BOOST_SERIALIZATION_TRACKING_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 | |
// 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 BOOST_DEDUCED_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 | |
BOOST_DEDUCED_TYPENAME mpl::eval_if< | |
is_base_and_derived<boost::serialization::basic_traits, T>, | |
traits_class_tracking< T >, | |
//else | |
BOOST_DEDUCED_TYPENAME mpl::eval_if< | |
is_pointer< T >, | |
// pointers are not tracked by default | |
mpl::int_<track_never>, | |
//else | |
BOOST_DEDUCED_TYPENAME mpl::eval_if< | |
// for primitives | |
BOOST_DEDUCED_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 |