boost/serialization/is_abstract.hpp

#ifndef BOOST_SERIALIZATION_IS_ABSTRACT_CLASS_HPP
#define BOOST_SERIALIZATION_IS_ABSTRACT_CLASS_HPP

// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif

/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// is_abstract_class.hpp:

// (C) Copyright 2002 Rani Sharoni (rani_sharoni@hotmail.com) and 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.

#include <boost/config.hpp>
#include <boost/type_traits/detail/yes_no_type.hpp>
#include <boost/type_traits/is_class.hpp>
#include <boost/mpl/bool_fwd.hpp>

#ifndef BOOST_TT_IS_ABSTRACT_CLASS_HPP
#if    defined(__GNUC__) && (34 <= _GNUC__ * 10 + __GNU_MINOR)  \
    || defined(_MSC_VER) && (1310 <= _MSC_VER)                  \
    || defined(__EDG_VERSION__)                                 \
    /**/
    #include <boost/type_traits/is_abstract.hpp>
#else
// default to false if not supported

// supplant boost/type_traits/is_abstract.hpp
#   define BOOST_TT_IS_ABSTRACT_CLASS_HPP

    namespace boost {
    template<class T>
    struct is_abstract {
        typedef mpl::bool_<false> type;
        BOOST_STATIC_CONSTANT(bool, value = is_abstract::type::value); 
    };
    } // namespace boost
#endif
#endif // BOOST_TT_IS_ABSTRACT_CLASS_HPP

// define a macro to make explicit designation of this more transparent
#define BOOST_IS_ABSTRACT(T)                   \
namespace boost {                              \
template<>                                     \
struct is_abstract<T> {                        \
    BOOST_STATIC_CONSTANT(bool, value = true); \
};                                             \
} // namespace boost
/**/

#endif //BOOST_SERIALIZATION_IS_ABSTRACT_CLASS_HPP

Boost C++ Libraries

boost/serialization/is_abstract.hpp