| #ifndef BOOST_SERIALIZATION_WRAPPER_HPP |
| #define BOOST_SERIALIZATION_WRAPPER_HPP |
| |
| // (C) Copyright 2005-2006 Matthias Troyer |
| // 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) |
| |
| #include <boost/serialization/traits.hpp> |
| #include <boost/type_traits/is_base_and_derived.hpp> |
| #include <boost/mpl/eval_if.hpp> |
| #include <boost/mpl/bool.hpp> |
| |
| namespace boost { namespace serialization { |
| |
| /// the base class for serialization wrappers |
| /// |
| /// wrappers need to be treated differently at various places in the serialization library, |
| /// e.g. saving of non-const wrappers has to be possible. Since partial specialization |
| // is not supported by all compilers, we derive all wrappers from wrapper_traits. |
| |
| template< |
| class T, |
| int Level = object_serializable, |
| int Tracking = track_never, |
| unsigned int Version = 0, |
| class ETII = extended_type_info_impl< T > |
| > |
| struct wrapper_traits : |
| public traits<T,Level,Tracking,Version,ETII,mpl::true_> |
| {}; |
| |
| template<class T> |
| struct is_wrapper_impl : |
| boost::mpl::eval_if< |
| boost::is_base_and_derived<basic_traits,T>, |
| boost::mpl::true_, |
| boost::mpl::false_ |
| >::type |
| {}; |
| |
| template<class T> |
| struct is_wrapper { |
| typedef BOOST_DEDUCED_TYPENAME is_wrapper_impl<const T>::type type; |
| }; |
| |
| } // serialization |
| } // boost |
| |
| // A macro to define that a class is a wrapper |
| #define BOOST_CLASS_IS_WRAPPER(T) \ |
| namespace boost { \ |
| namespace serialization { \ |
| template<> \ |
| struct is_wrapper_impl<const T> : boost::mpl::true_ {}; \ |
| } \ |
| } \ |
| /**/ |
| |
| #endif //BOOST_SERIALIZATION_WRAPPER_HPP |