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43 lines
1.3 KiB
C++
Executable file
43 lines
1.3 KiB
C++
Executable file
// 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/config/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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template <class Model>
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struct usage_requirements
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{
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# if defined(BOOST_GCC) && (BOOST_GCC >= 110000)
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# pragma GCC diagnostic push
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# pragma GCC diagnostic ignored "-Wnonnull"
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# endif
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~usage_requirements() { ((Model*)0)->~Model(); }
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# if defined(BOOST_GCC) && (BOOST_GCC >= 110000)
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# pragma GCC diagnostic pop
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# endif
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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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}} // namespace boost::concepts
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#endif // BOOST_CONCEPT_USAGE_DWA2006919_HPP
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