| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960 | #ifndef BOOST_SERIALIZATION_ASSUME_ABSTRACT_HPP#define BOOST_SERIALIZATION_ASSUME_ABSTRACT_HPP// MS compatible compilers support #pragma once#if defined(_MSC_VER)# pragma once#endif/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8// assume_abstract_class.hpp:// (C) Copyright 2008 Robert Ramey// 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.// this is useful for compilers which don't support the boost::is_abstract#include <boost/type_traits/is_abstract.hpp>#include <boost/mpl/bool_fwd.hpp>#ifndef BOOST_NO_IS_ABSTRACT// if there is an intrinsic is_abstract defined, we don't have to do anything#define BOOST_SERIALIZATION_ASSUME_ABSTRACT(T)// but forward to the "official" is_abstractnamespace boost {namespace serialization {    template<class T>    struct is_abstract : boost::is_abstract< T > {} ;} // namespace serialization} // namespace boost#else// we have to "make" onenamespace boost {namespace serialization {    template<class T>    struct is_abstract : boost::false_type {};} // namespace serialization} // namespace boost// define a macro to make explicit designation of this more transparent#define BOOST_SERIALIZATION_ASSUME_ABSTRACT(T)        \namespace boost {                                     \namespace serialization {                             \template<>                                            \struct is_abstract< T > : boost::true_type {};        \template<>                                            \struct is_abstract< const T > : boost::true_type {};  \}}                                                    \/**/#endif // BOOST_NO_IS_ABSTRACT#endif //BOOST_SERIALIZATION_ASSUME_ABSTRACT_HPP
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