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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
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