// 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