sl@0: // Copyright David Abrahams, Daniel Wallin 2003. Use, modification and 
sl@0: // distribution is subject to the Boost Software License, Version 1.0. 
sl@0: // (See accompanying file LICENSE_1_0.txt or copy at 
sl@0: // http://www.boost.org/LICENSE_1_0.txt)
sl@0: 
sl@0: #ifndef BOOST_PARAMETER_MACROS_050412_HPP
sl@0: #define BOOST_PARAMETER_MACROS_050412_HPP
sl@0: 
sl@0: #include <boost/preprocessor/tuple/elem.hpp>
sl@0: #include <boost/preprocessor/repetition/repeat_from_to.hpp>
sl@0: #include <boost/preprocessor/arithmetic/inc.hpp>
sl@0: #include <boost/preprocessor/logical/bool.hpp>
sl@0: #include <boost/preprocessor/punctuation/comma_if.hpp>
sl@0: #include <boost/preprocessor/control/expr_if.hpp>
sl@0: #include <boost/preprocessor/repetition/enum_params.hpp>
sl@0: #include <boost/preprocessor/repetition/enum_binary_params.hpp>
sl@0: #include <boost/preprocessor/cat.hpp>
sl@0: 
sl@0: #define BOOST_PARAMETER_FUN_TEMPLATE_HEAD1(n) \
sl@0:     template<BOOST_PP_ENUM_PARAMS(n, class T)>
sl@0: 
sl@0: #define BOOST_PARAMETER_FUN_TEMPLATE_HEAD0(n)
sl@0: 
sl@0: #ifndef BOOST_NO_SFINAE
sl@0: 
sl@0: # define BOOST_PARAMETER_MATCH_TYPE(n, param)           \
sl@0:             BOOST_PP_EXPR_IF(n, typename) param::match  \
sl@0:             <                                           \
sl@0:                 BOOST_PP_ENUM_PARAMS(n, T)              \
sl@0:             >::type 
sl@0: 
sl@0: #else
sl@0: 
sl@0: # define BOOST_PARAMETER_MATCH_TYPE(n, param) param
sl@0: 
sl@0: #endif
sl@0: 
sl@0: #define BOOST_PARAMETER_FUN_DECL(z, n, params)                                      \
sl@0:                                                                                     \
sl@0:     BOOST_PP_CAT(BOOST_PARAMETER_FUN_TEMPLATE_HEAD, BOOST_PP_BOOL(n))(n)            \
sl@0:                                                                                     \
sl@0:     BOOST_PP_TUPLE_ELEM(3, 0, params)                                               \
sl@0:         BOOST_PP_TUPLE_ELEM(3, 1, params)(                                          \
sl@0:             BOOST_PP_ENUM_BINARY_PARAMS(n, T, const& p)                             \
sl@0:             BOOST_PP_COMMA_IF(n)                                                    \
sl@0:             BOOST_PARAMETER_MATCH_TYPE(n,BOOST_PP_TUPLE_ELEM(3, 2, params))         \
sl@0:             kw = BOOST_PP_TUPLE_ELEM(3, 2, params)()                                \
sl@0:         )                                                                           \
sl@0:     {                                                                               \
sl@0:         return BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(3, 1, params), _with_named_params)( \
sl@0:             kw(BOOST_PP_ENUM_PARAMS(n, p))                                          \
sl@0:         );                                                                          \
sl@0:     }
sl@0: 
sl@0: // Generates:
sl@0: //
sl@0: // template<class Params>
sl@0: // ret name ## _with_named_params(Params const&);
sl@0: //
sl@0: // template<class T0>
sl@0: // ret name(T0 const& p0, typename parameters::match<T0>::type kw = parameters())
sl@0: // {
sl@0: //     return name ## _with_named_params(kw(p0));
sl@0: // }
sl@0: //
sl@0: // template<class T0, ..., class TN>
sl@0: // ret name(T0 const& p0, ..., TN const& PN
sl@0: //    , typename parameters::match<T0, ..., TN>::type kw = parameters())
sl@0: // {
sl@0: //     return name ## _with_named_params(kw(p0, ..., pN));
sl@0: // }
sl@0: //
sl@0: // template<class Params>
sl@0: // ret name ## _with_named_params(Params const&)
sl@0: //
sl@0: // lo and hi determines the min and max arity of the generated functions.
sl@0: 
sl@0: #define BOOST_PARAMETER_FUN(ret, name, lo, hi, parameters)                          \
sl@0:                                                                                     \
sl@0:     template<class Params>                                                          \
sl@0:     ret BOOST_PP_CAT(name, _with_named_params)(Params const& p);                    \
sl@0:                                                                                     \
sl@0:     BOOST_PP_REPEAT_FROM_TO(                                                        \
sl@0:         lo, BOOST_PP_INC(hi), BOOST_PARAMETER_FUN_DECL, (ret, name, parameters))    \
sl@0:                                                                                     \
sl@0:     template<class Params>                                                          \
sl@0:     ret BOOST_PP_CAT(name, _with_named_params)(Params const& p)
sl@0: 
sl@0: #define BOOST_PARAMETER_MEMFUN(ret, name, lo, hi, parameters)                       \
sl@0:                                                                                     \
sl@0:     BOOST_PP_REPEAT_FROM_TO(                                                        \
sl@0:         lo, BOOST_PP_INC(hi), BOOST_PARAMETER_FUN_DECL, (ret, name, parameters))    \
sl@0:                                                                                     \
sl@0:     template<class Params>                                                          \
sl@0:     ret BOOST_PP_CAT(name, _with_named_params)(Params const& p)
sl@0: 
sl@0: #endif // BOOST_PARAMETER_MACROS_050412_HPP
sl@0: