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// 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
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