1 // Copyright David Abrahams, Daniel Wallin 2003.
2 // Distributed under the Boost Software License, Version 1.0.
3 // (See accompanying file LICENSE_1_0.txt or copy at
4 // http://www.boost.org/LICENSE_1_0.txt)
5 
6 #ifndef BOOST_PARAMETER_AUX_PACK_AS_PARAMETER_REQUIREMENTS_HPP
7 #define BOOST_PARAMETER_AUX_PACK_AS_PARAMETER_REQUIREMENTS_HPP
8 
9 #include <boost/parameter/aux_/pack/parameter_requirements.hpp>
10 #include <boost/parameter/aux_/pack/tag_type.hpp>
11 #include <boost/parameter/aux_/pack/predicate.hpp>
12 #include <boost/parameter/deduced.hpp>
13 
14 namespace boost { namespace parameter { namespace aux {
15 
16     // Converts a ParameterSpec into a specialization of
17     // parameter_requirements.  We need to do this in order to get the
18     // tag_type into the type in a way that can be conveniently matched
19     // by a satisfies(...) member function in arg_list.
20     template <typename ParameterSpec>
21     struct as_parameter_requirements
22     {
23         typedef ::boost::parameter::aux::parameter_requirements<
24             typename ::boost::parameter::aux::tag_type<ParameterSpec>::type
25           , typename ::boost::parameter::aux::predicate<ParameterSpec>::type
26           , ::boost::parameter::aux::has_default<ParameterSpec>
27         > type;
28     };
29 }}} // namespace boost::parameter::aux
30 
31 #endif  // include guard
32 
33