60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
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#ifndef BOOST_SERIALIZATION_ASSUME_ABSTRACT_HPP
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#define BOOST_SERIALIZATION_ASSUME_ABSTRACT_HPP
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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// assume_abstract_class.hpp:
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// (C) Copyright 2008 Robert Ramey
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// See http://www.boost.org for updates, documentation, and revision history.
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// this is useful for compilers which don't support the boost::is_abstract
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#include <boost/type_traits/is_abstract.hpp>
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#ifndef BOOST_NO_IS_ABSTRACT
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// if there is an intrinsic is_abstract defined, we don't have to do anything
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#define BOOST_SERIALIZATION_ASSUME_ABSTRACT(T)
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// but forward to the "official" is_abstract
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namespace boost {
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namespace serialization {
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template<class T>
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struct is_abstract : boost::is_abstract< T > {} ;
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} // namespace serialization
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} // namespace boost
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#else
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// we have to "make" one
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namespace boost {
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namespace serialization {
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template<class T>
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struct is_abstract : boost::false_type {};
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} // namespace serialization
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} // namespace boost
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// define a macro to make explicit designation of this more transparent
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#define BOOST_SERIALIZATION_ASSUME_ABSTRACT(T) \
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namespace boost { \
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namespace serialization { \
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template<> \
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struct is_abstract< T > : boost::true_type {}; \
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template<> \
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struct is_abstract< const T > : boost::true_type {}; \
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}} \
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/**/
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#endif // BOOST_NO_IS_ABSTRACT
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#endif //BOOST_SERIALIZATION_ASSUME_ABSTRACT_HPP
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