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44 lines
1.2 KiB
44 lines
1.2 KiB
// Copyright David Abrahams 2006. Distributed under the Boost |
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// Software License, Version 1.0. (See accompanying |
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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#ifndef BOOST_CONCEPT_USAGE_DWA2006919_HPP |
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# define BOOST_CONCEPT_USAGE_DWA2006919_HPP |
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# include <boost/concept/assert.hpp> |
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# include <boost/detail/workaround.hpp> |
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# include <boost/concept/detail/backward_compatibility.hpp> |
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namespace boost { namespace concepts { |
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# if BOOST_WORKAROUND(__GNUC__, == 2) |
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# define BOOST_CONCEPT_USAGE(model) ~model() |
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# else |
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template <class Model> |
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struct usage_requirements |
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{ |
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~usage_requirements() { ((Model*)0)->~Model(); } |
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}; |
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# if BOOST_WORKAROUND(__GNUC__, <= 3) |
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# define BOOST_CONCEPT_USAGE(model) \ |
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model(); /* at least 2.96 and 3.4.3 both need this :( */ \ |
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BOOST_CONCEPT_ASSERT((boost::concepts::usage_requirements<model>)); \ |
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~model() |
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# else |
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# define BOOST_CONCEPT_USAGE(model) \ |
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BOOST_CONCEPT_ASSERT((boost::concepts::usage_requirements<model>)); \ |
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~model() |
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# endif |
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# endif |
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}} // namespace boost::concepts |
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#endif // BOOST_CONCEPT_USAGE_DWA2006919_HPP
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