#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/traits.hpp>

 namespace boost {

 namespace serialization {

 struct basic_traits;

 // default tracking level

 template<class T>

 struct tracking_level {

     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_selectivly>

     >  > >::type type;

     BOOST_STATIC_CONSTANT(int, value = tracking_level::type::value);

 };

 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