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- // Copyright David Abrahams, Daniel Wallin 2003.
- // 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)
- #ifndef BOOST_PARAMETER_AUX_PACK_UNMATCHED_ARGUMENT_HPP
- #define BOOST_PARAMETER_AUX_PACK_UNMATCHED_ARGUMENT_HPP
- #include <boost/parameter/config.hpp>
- #if defined(BOOST_PARAMETER_CAN_USE_MP11)
- #include <type_traits>
- #else
- #include <boost/mpl/bool.hpp>
- #include <boost/mpl/if.hpp>
- #include <boost/mpl/assert.hpp>
- #include <boost/type_traits/is_same.hpp>
- #endif
- namespace boost { namespace parameter { namespace aux {
- template <typename T>
- struct unmatched_argument
- {
- #if defined(BOOST_PARAMETER_CAN_USE_MP11)
- static_assert(::std::is_same<T,void>::value, "T == void");
- #else
- BOOST_MPL_ASSERT((
- typename ::boost::mpl::if_<
- ::boost::is_same<T,void>
- , ::boost::mpl::true_
- , ::boost::mpl::false_
- >::type
- ));
- #endif
- typedef int type;
- };
- }}} // namespace boost::parameter::aux
- #endif // include guard
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