williamr@4: #ifndef BOOST_SERIALIZATION_IS_ABSTRACT_CLASS_HPP
williamr@4: #define BOOST_SERIALIZATION_IS_ABSTRACT_CLASS_HPP
williamr@2: 
williamr@4: // MS compatible compilers support #pragma once
williamr@2: #if defined(_MSC_VER) && (_MSC_VER >= 1020)
williamr@2: # pragma once
williamr@2: #endif
williamr@2: 
williamr@2: /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
williamr@2: // is_abstract_class.hpp:
williamr@4: 
williamr@4: // (C) Copyright 2002 Rani Sharoni (rani_sharoni@hotmail.com) and Robert Ramey
williamr@4: // Use, modification and distribution is subject to the Boost Software
williamr@4: // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
williamr@4: // http://www.boost.org/LICENSE_1_0.txt)
williamr@4: 
williamr@2: //  See http://www.boost.org for updates, documentation, and revision history.
williamr@2: 
williamr@4: #include <boost/config.hpp>
williamr@4: #include <boost/mpl/bool.hpp>
williamr@4: #include <boost/type_traits/is_abstract.hpp>
williamr@2: 
williamr@2: namespace boost {
williamr@4: namespace serialization {
williamr@4:     template<class T>
williamr@4:     struct is_abstract {
williamr@4:         // default to false if not supported
williamr@4:         #ifdef BOOST_NO_IS_ABSTRACT
williamr@4:             typedef BOOST_DEDUCED_TYPENAME mpl::bool_<false> type;
williamr@4:             BOOST_STATIC_CONSTANT(bool, value = false); 
williamr@4:         #else
williamr@4:             typedef BOOST_DEDUCED_TYPENAME boost::is_abstract<T>::type type;
williamr@4:             BOOST_STATIC_CONSTANT(bool, value = type::value); 
williamr@4:         #endif
williamr@4:     };
williamr@4: } // namespace serialization
williamr@2: } // namespace boost
williamr@2: 
williamr@4: // define a macro to make explicit designation of this more transparent
williamr@4: #define BOOST_IS_ABSTRACT(T)                          \
williamr@4: namespace boost {                                     \
williamr@4: namespace serialization {                             \
williamr@4: template<>                                            \
williamr@4: struct is_abstract< T > {                             \
williamr@4:     typedef mpl::bool_<true> type;                    \
williamr@4:     BOOST_STATIC_CONSTANT(bool, value = true);        \
williamr@4: };                                                    \
williamr@4: }                                                     \
williamr@4: }                                                     \
williamr@4: /**/
williamr@2: 
williamr@4: #endif //BOOST_SERIALIZATION_IS_ABSTRACT_CLASS_HPP