python/test/if_else.cpp at develop · boostorg/python · GitHub

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// Copyright David Abrahams 2002.

// 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)

#include <boost/static_assert.hpp>

#include <boost/python/detail/if_else.hpp>

#include <boost/python/detail/type_traits.hpp>

typedef char c1;

typedef char c2[2];

typedef char c3[3];

typedef char c4[4];

template <unsigned size>

struct choose

{

typedef typename boost::python::detail::if_<

(sizeof(c1) == size)

>::template then<

>::template elif<

(sizeof(c2) == size)

>::template then<

>::template elif<

(sizeof(c3) == size)

>::template then<

>::template elif<

(sizeof(c4) == size)

>::template then<

>::template else_<void*>::type type;

};

int main()

{

BOOST_STATIC_ASSERT((boost::python::detail::is_same<choose<1>::type,c1>::value));

BOOST_STATIC_ASSERT((boost::python::detail::is_same<choose<2>::type,c2>::value));

BOOST_STATIC_ASSERT((boost::python::detail::is_same<choose<3>::type,c3>::value));

BOOST_STATIC_ASSERT((boost::python::detail::is_same<choose<4>::type,c4>::value));

BOOST_STATIC_ASSERT((boost::python::detail::is_same<choose<5>::type,void*>::value));

return 0;

}

python/test/if_else.cpp at develop · boostorg/python · GitHub

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