Chris@16: // Copyright David Abrahams, Daniel Wallin 2003. Use, modification and 
Chris@16: // distribution is subject to the Boost Software License, Version 1.0. 
Chris@16: // (See accompanying file LICENSE_1_0.txt or copy at 
Chris@16: // http://www.boost.org/LICENSE_1_0.txt)
Chris@16: 
Chris@16: // This file generates overloads in this format:
Chris@16: //
Chris@16: //     template<class A0, class A1>
Chris@16: //     typename mpl::apply_wrap1<
Chris@16: //         aux::make_arg_list<
Chris@16: //             PS0,A0
Chris@16: //           , aux::make_arg_list<
Chris@16: //                 PS1,A1
Chris@16: //               , mpl::identity<aux::empty_arg_list>
Chris@16: //             >
Chris@16: //         >
Chris@16: //      , unnamed_list
Chris@16: //     >::type
Chris@16: //     operator()(A0 const& a0, A1 const& a1) const
Chris@16: //     {
Chris@16: //         typedef typename mpl::apply_wrap1<
Chris@16: //             aux::make_arg_list<
Chris@16: //                 PS0,A0
Chris@16: //               , aux::make_arg_list<
Chris@16: //                     PS1,A1
Chris@16: //                   , mpl::identity<aux::empty_arg_list>
Chris@16: //                 >
Chris@16: //             >
Chris@16: //         >::type arg_tuple;
Chris@16: //
Chris@16: //         return arg_tuple(
Chris@16: //             a0
Chris@16: //           , a1
Chris@16: //           , aux::void_()
Chris@16: //             ...
Chris@16: //         );
Chris@16: //     }
Chris@16: //
Chris@16: 
Chris@16: #if !defined(BOOST_PP_IS_ITERATING)
Chris@16: # error Boost.Parameters - do not include this file!
Chris@16: #endif
Chris@16: 
Chris@16: #define N BOOST_PP_ITERATION()
Chris@16: 
Chris@16: #define BOOST_PARAMETER_open_list(z, n, text) \
Chris@16:     aux::item< \
Chris@16:         BOOST_PP_CAT(PS, n), BOOST_PP_CAT(A, n)
Chris@16: 
Chris@16: #define BOOST_PARAMETER_close_list(z, n, text) > 
Chris@16: 
Chris@16: #define BOOST_PARAMETER_arg_list(n) \
Chris@16:     aux::make_arg_list< \
Chris@16:         BOOST_PP_ENUM(N, BOOST_PARAMETER_open_list, _) \
Chris@16:       , void_ \
Chris@16:         BOOST_PP_REPEAT(N, BOOST_PARAMETER_close_list, _) \
Chris@16:       , deduced_list \
Chris@16:       , aux::tag_keyword_arg \
Chris@16:     >
Chris@16: 
Chris@16: #define BOOST_PARAMETER_arg_pack_init(z, n, limit) \
Chris@16:     BOOST_PP_CAT(a, BOOST_PP_SUB(limit,n))
Chris@16: 
Chris@16: template<BOOST_PP_ENUM_PARAMS(N, class A)>
Chris@16: typename mpl::first<
Chris@16:     typename BOOST_PARAMETER_arg_list(N)::type
Chris@16: >::type
Chris@16: operator()(BOOST_PP_ENUM_BINARY_PARAMS(N, A, & a)) const
Chris@16: {
Chris@16:     typedef typename BOOST_PARAMETER_arg_list(N)::type result;
Chris@16: 
Chris@16:     typedef typename mpl::first<result>::type result_type;
Chris@16:     typedef typename mpl::second<result>::type error;
Chris@16:     error();
Chris@16: 
Chris@16:     return result_type(
Chris@16:         BOOST_PP_ENUM(N, BOOST_PARAMETER_arg_pack_init, BOOST_PP_DEC(N))
Chris@16:         BOOST_PP_ENUM_TRAILING_PARAMS(
Chris@16:             BOOST_PP_SUB(BOOST_PARAMETER_MAX_ARITY, N)
Chris@16:           , aux::void_reference() BOOST_PP_INTERCEPT
Chris@16:         ));
Chris@16: }
Chris@16: 
Chris@16: #undef BOOST_PARAMETER_arg_list
Chris@16: #undef BOOST_PARAMETER_open_list
Chris@16: #undef BOOST_PARAMETER_close_list
Chris@16: #undef N
Chris@16: