| // Copyright David Abrahams, Daniel Wallin 2003. Use, modification and |
| // distribution is subject to 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_MACROS_050412_HPP |
| #define BOOST_PARAMETER_MACROS_050412_HPP |
| |
| #include <boost/preprocessor/tuple/elem.hpp> |
| #include <boost/preprocessor/repetition/repeat_from_to.hpp> |
| #include <boost/preprocessor/arithmetic/inc.hpp> |
| #include <boost/preprocessor/logical/bool.hpp> |
| #include <boost/preprocessor/punctuation/comma_if.hpp> |
| #include <boost/preprocessor/control/expr_if.hpp> |
| #include <boost/preprocessor/repetition/enum_params.hpp> |
| #include <boost/preprocessor/repetition/enum_binary_params.hpp> |
| #include <boost/preprocessor/cat.hpp> |
| #include <boost/detail/workaround.hpp> |
| |
| #define BOOST_PARAMETER_FUN_TEMPLATE_HEAD1(n) \ |
| template<BOOST_PP_ENUM_PARAMS(n, class T)> |
| |
| #define BOOST_PARAMETER_FUN_TEMPLATE_HEAD0(n) |
| |
| #if ! defined(BOOST_NO_SFINAE) && ! BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x592)) |
| |
| # define BOOST_PARAMETER_MATCH_TYPE(n, param) \ |
| BOOST_PP_EXPR_IF(n, typename) param::match \ |
| < \ |
| BOOST_PP_ENUM_PARAMS(n, T) \ |
| >::type |
| |
| #else |
| |
| # define BOOST_PARAMETER_MATCH_TYPE(n, param) param |
| |
| #endif |
| |
| #define BOOST_PARAMETER_FUN_DECL(z, n, params) \ |
| \ |
| BOOST_PP_CAT(BOOST_PARAMETER_FUN_TEMPLATE_HEAD, BOOST_PP_BOOL(n))(n) \ |
| \ |
| BOOST_PP_TUPLE_ELEM(3, 0, params) \ |
| BOOST_PP_TUPLE_ELEM(3, 1, params)( \ |
| BOOST_PP_ENUM_BINARY_PARAMS(n, T, const& p) \ |
| BOOST_PP_COMMA_IF(n) \ |
| BOOST_PARAMETER_MATCH_TYPE(n,BOOST_PP_TUPLE_ELEM(3, 2, params)) \ |
| kw = BOOST_PP_TUPLE_ELEM(3, 2, params)() \ |
| ) \ |
| { \ |
| return BOOST_PP_CAT(BOOST_PP_TUPLE_ELEM(3, 1, params), _with_named_params)( \ |
| kw(BOOST_PP_ENUM_PARAMS(n, p)) \ |
| ); \ |
| } |
| |
| // Generates: |
| // |
| // template<class Params> |
| // ret name ## _with_named_params(Params const&); |
| // |
| // template<class T0> |
| // ret name(T0 const& p0, typename parameters::match<T0>::type kw = parameters()) |
| // { |
| // return name ## _with_named_params(kw(p0)); |
| // } |
| // |
| // template<class T0, ..., class TN> |
| // ret name(T0 const& p0, ..., TN const& PN |
| // , typename parameters::match<T0, ..., TN>::type kw = parameters()) |
| // { |
| // return name ## _with_named_params(kw(p0, ..., pN)); |
| // } |
| // |
| // template<class Params> |
| // ret name ## _with_named_params(Params const&) |
| // |
| // lo and hi determines the min and max arity of the generated functions. |
| |
| #define BOOST_PARAMETER_FUN(ret, name, lo, hi, parameters) \ |
| \ |
| template<class Params> \ |
| ret BOOST_PP_CAT(name, _with_named_params)(Params const& p); \ |
| \ |
| BOOST_PP_REPEAT_FROM_TO( \ |
| lo, BOOST_PP_INC(hi), BOOST_PARAMETER_FUN_DECL, (ret, name, parameters)) \ |
| \ |
| template<class Params> \ |
| ret BOOST_PP_CAT(name, _with_named_params)(Params const& p) |
| |
| #define BOOST_PARAMETER_MEMFUN(ret, name, lo, hi, parameters) \ |
| \ |
| BOOST_PP_REPEAT_FROM_TO( \ |
| lo, BOOST_PP_INC(hi), BOOST_PARAMETER_FUN_DECL, (ret, name, parameters)) \ |
| \ |
| template<class Params> \ |
| ret BOOST_PP_CAT(name, _with_named_params)(Params const& p) |
| |
| #endif // BOOST_PARAMETER_MACROS_050412_HPP |
| |