| // 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_IS_NAMED_ARGUMENT_HPP |
| #define BOOST_PARAMETER_AUX_PACK_IS_NAMED_ARGUMENT_HPP |
| |
| #include <boost/parameter/aux_/template_keyword.hpp> |
| #include <boost/parameter/aux_/is_tagged_argument.hpp> |
| #include <boost/parameter/config.hpp> |
| |
| #if defined(BOOST_PARAMETER_CAN_USE_MP11) |
| #include <boost/mp11/integral.hpp> |
| #include <boost/mp11/utility.hpp> |
| #else |
| #include <boost/mpl/bool.hpp> |
| #include <boost/mpl/if.hpp> |
| #endif |
| |
| namespace boost { namespace parameter { namespace aux { |
| |
| template <typename T> |
| #if defined(BOOST_PARAMETER_CAN_USE_MP11) |
| using is_named_argument = ::boost::mp11::mp_if< |
| ::boost::parameter::aux::is_template_keyword<T> |
| , ::boost::mp11::mp_true |
| , ::boost::parameter::aux::is_tagged_argument_mp11<T> |
| >; |
| #else |
| struct is_named_argument |
| : ::boost::mpl::if_< |
| ::boost::parameter::aux::is_template_keyword<T> |
| , ::boost::mpl::true_ |
| , ::boost::parameter::aux::is_tagged_argument<T> |
| >::type |
| { |
| }; |
| #endif |
| }}} // namespace boost::parameter::aux |
| |
| #endif // include guard |
| |