#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