| // 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 |
| |
