| 1 | #ifndef BOOST_SERIALIZATION_WRAPPER_HPP |
|---|
| 2 | #define BOOST_SERIALIZATION_WRAPPER_HPP |
|---|
| 3 | |
|---|
| 4 | // (C) Copyright 2005-2006 Matthias Troyer |
|---|
| 5 | // Use, modification and distribution is subject to the Boost Software |
|---|
| 6 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
|---|
| 7 | // http://www.boost.org/LICENSE_1_0.txt) |
|---|
| 8 | |
|---|
| 9 | #include <boost/serialization/traits.hpp> |
|---|
| 10 | #include <boost/type_traits/is_base_and_derived.hpp> |
|---|
| 11 | #include <boost/mpl/eval_if.hpp> |
|---|
| 12 | #include <boost/mpl/bool.hpp> |
|---|
| 13 | |
|---|
| 14 | namespace boost { namespace serialization { |
|---|
| 15 | |
|---|
| 16 | /// the base class for serialization wrappers |
|---|
| 17 | /// |
|---|
| 18 | /// wrappers need to be treated differently at various places in the serialization library, |
|---|
| 19 | /// e.g. saving of non-const wrappers has to be possible. Since partial specialization |
|---|
| 20 | // is not supported by all compilers, we derive all wrappers from wrapper_traits. |
|---|
| 21 | |
|---|
| 22 | template< |
|---|
| 23 | class T, |
|---|
| 24 | int Level = object_serializable, |
|---|
| 25 | int Tracking = track_never, |
|---|
| 26 | unsigned int Version = 0, |
|---|
| 27 | class ETII = extended_type_info_impl< T > |
|---|
| 28 | > |
|---|
| 29 | struct wrapper_traits : |
|---|
| 30 | public traits<T,Level,Tracking,Version,ETII,mpl::true_> |
|---|
| 31 | {}; |
|---|
| 32 | |
|---|
| 33 | template<class T> |
|---|
| 34 | struct is_wrapper_impl : |
|---|
| 35 | boost::mpl::eval_if< |
|---|
| 36 | boost::is_base_and_derived<basic_traits,T>, |
|---|
| 37 | boost::mpl::true_, |
|---|
| 38 | boost::mpl::false_ |
|---|
| 39 | >::type |
|---|
| 40 | {}; |
|---|
| 41 | |
|---|
| 42 | template<class T> |
|---|
| 43 | struct is_wrapper { |
|---|
| 44 | typedef typename is_wrapper_impl<const T>::type type; |
|---|
| 45 | }; |
|---|
| 46 | |
|---|
| 47 | } // serialization |
|---|
| 48 | } // boost |
|---|
| 49 | |
|---|
| 50 | // A macro to define that a class is a wrapper |
|---|
| 51 | #define BOOST_CLASS_IS_WRAPPER(T) \ |
|---|
| 52 | namespace boost { \ |
|---|
| 53 | namespace serialization { \ |
|---|
| 54 | template<> \ |
|---|
| 55 | struct is_wrapper_impl<const T> : boost::mpl::true_ {}; \ |
|---|
| 56 | } \ |
|---|
| 57 | } \ |
|---|
| 58 | /**/ |
|---|
| 59 | |
|---|
| 60 | #endif //BOOST_SERIALIZATION_WRAPPER_HPP |
|---|
| 61 | |
|---|
