// Copyright David Abrahams 2006. Distributed under 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) | |
#ifndef BOOST_CONCEPT_USAGE_DWA2006919_HPP | |
# define BOOST_CONCEPT_USAGE_DWA2006919_HPP | |
# include <boost/concept/assert.hpp> | |
# include <boost/detail/workaround.hpp> | |
# include <boost/concept/detail/backward_compatibility.hpp> | |
namespace boost { namespace concepts { | |
# if BOOST_WORKAROUND(__GNUC__, == 2) | |
# define BOOST_CONCEPT_USAGE(model) ~model() | |
# else | |
template <class Model> | |
struct usage_requirements | |
{ | |
~usage_requirements() { ((Model*)0)->~Model(); } | |
}; | |
# if BOOST_WORKAROUND(__GNUC__, <= 3) | |
# define BOOST_CONCEPT_USAGE(model) \ | |
model(); /* at least 2.96 and 3.4.3 both need this :( */ \ | |
BOOST_CONCEPT_ASSERT((boost::concepts::usage_requirements<model>)); \ | |
~model() | |
# else | |
# define BOOST_CONCEPT_USAGE(model) \ | |
BOOST_CONCEPT_ASSERT((boost::concepts::usage_requirements<model>)); \ | |
~model() | |
# endif | |
# endif | |
}} // namespace boost::concepts | |
#endif // BOOST_CONCEPT_USAGE_DWA2006919_HPP |