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#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_abstract namespace boost { namespace serialization { template<class T> struct is_abstract : boost::is_abstract< T > {} ; } // namespace serialization } // namespace boost #else // we have to "make" one namespace 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