45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
// Copyright David Abrahams 2002.
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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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#include <boost/static_assert.hpp>
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#include <boost/python/detail/if_else.hpp>
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#include <boost/python/detail/type_traits.hpp>
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typedef char c1;
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typedef char c2[2];
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typedef char c3[3];
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typedef char c4[4];
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template <unsigned size>
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struct choose
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{
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typedef typename boost::python::detail::if_<
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(sizeof(c1) == size)
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>::template then<
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c1
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>::template elif<
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(sizeof(c2) == size)
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>::template then<
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c2
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>::template elif<
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(sizeof(c3) == size)
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>::template then<
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c3
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>::template elif<
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(sizeof(c4) == size)
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>::template then<
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c4
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>::template else_<void*>::type type;
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};
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int main()
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{
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BOOST_STATIC_ASSERT((boost::python::detail::is_same<choose<1>::type,c1>::value));
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BOOST_STATIC_ASSERT((boost::python::detail::is_same<choose<2>::type,c2>::value));
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BOOST_STATIC_ASSERT((boost::python::detail::is_same<choose<3>::type,c3>::value));
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BOOST_STATIC_ASSERT((boost::python::detail::is_same<choose<4>::type,c4>::value));
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BOOST_STATIC_ASSERT((boost::python::detail::is_same<choose<5>::type,void*>::value));
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return 0;
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}
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