1 #ifndef BOOST_SERIALIZATION_TRAITS_HPP 2 #define BOOST_SERIALIZATION_TRAITS_HPP 3 4 // MS compatible compilers support #pragma once 5 #if defined(_MSC_VER) 6 # pragma once 7 #endif 8 9 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8 10 // traits.hpp: 11 12 // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 13 // Use, modification and distribution is subject to the Boost Software 14 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at 15 // http://www.boost.org/LICENSE_1_0.txt) 16 17 // See http://www.boost.org for updates, documentation, and revision history. 18 19 // This header is used to apply serialization traits to templates. The 20 // standard system can't be used for platforms which don't support 21 // Partial Templlate Specialization. 22 23 // The motivation for this is the Name-Value Pair (NVP) template. 24 // it has to work the same on all platforms in order for archives 25 // to be portable accross platforms. 26 27 #include <boost/config.hpp> 28 #include <boost/static_assert.hpp> 29 30 #include <boost/mpl/int.hpp> 31 #include <boost/mpl/bool_fwd.hpp> 32 #include <boost/serialization/level_enum.hpp> 33 #include <boost/serialization/tracking_enum.hpp> 34 35 namespace boost { 36 namespace serialization { 37 38 // common base class used to detect appended traits class 39 struct basic_traits {}; 40 41 template <class T> 42 struct extended_type_info_impl; 43 44 template< 45 class T, 46 int Level, 47 int Tracking, 48 unsigned int Version = 0, 49 class ETII = extended_type_info_impl< T >, 50 class Wrapper = mpl::false_ 51 > 52 struct traits : public basic_traits { 53 BOOST_STATIC_ASSERT(Version == 0 || Level >= object_class_info); 54 BOOST_STATIC_ASSERT(Tracking == track_never || Level >= object_serializable); 55 typedef typename mpl::int_<Level> level; 56 typedef typename mpl::int_<Tracking> tracking; 57 typedef typename mpl::int_<Version> version; 58 typedef ETII type_info_implementation; 59 typedef Wrapper is_wrapper; 60 }; 61 62 } // namespace serialization 63 } // namespace boost 64 65 #endif // BOOST_SERIALIZATION_TRAITS_HPP 66