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40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
// Copyright David Abrahams 2003.
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// Distributed under the Boost Software License, Version 1.0. (See
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// 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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#ifndef STATIC_ASSERT_SAME_DWA2003530_HPP
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# define STATIC_ASSERT_SAME_DWA2003530_HPP
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# include <boost/type.hpp>
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# include <boost/static_assert.hpp>
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#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
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template <class T, class U>
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struct static_assert_same_base;
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template <class T>
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struct static_assert_same_base<T,T>
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{
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enum { value = 1 };
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};
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template <class T, class U>
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struct static_assert_same : static_assert_same_base<T,U> {};
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#else
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# include <boost/mpl/if.hpp>
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# include <boost/mpl/bool.hpp>
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# include <boost/type_traits/is_same.hpp>
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template <class T, class U>
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struct static_assert_same
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: boost::mpl::if_<boost::is_same<T,U>,boost::mpl::true_,void>::type
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{};
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#endif
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#define STATIC_ASSERT_SAME( T1,T2 ) \
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enum { BOOST_JOIN(boost_static_assert_enum_, __LINE__) \
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= static_assert_same<T1,T2>::value }
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#endif // STATIC_ASSERT_SAME_DWA2003530_HPP
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