boost/parameter/are_tagged_arguments.hpp
// Copyright Cromwell D. Enage 2018.
// Distributed under 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_ARE_TAGGED_ARGUMENTS_HPP
#define BOOST_PARAMETER_ARE_TAGGED_ARGUMENTS_HPP
#include <boost/parameter/config.hpp>
#if defined(BOOST_PARAMETER_HAS_PERFECT_FORWARDING)
namespace boost { namespace parameter {
template <typename TaggedArg0, typename ...TaggedArgs>
struct are_tagged_arguments;
}} // namespace boost::parameter
#include <boost/parameter/aux_/is_tagged_argument.hpp>
namespace boost { namespace parameter {
template <typename TaggedArg0>
struct are_tagged_arguments<TaggedArg0>
: ::boost::parameter::aux::is_tagged_argument<TaggedArg0>
{
};
}} // namespace boost::parameter
#include <boost/mpl/bool.hpp>
#include <boost/mpl/if.hpp>
namespace boost { namespace parameter {
template <typename TaggedArg0, typename ...TaggedArgs>
struct are_tagged_arguments
: ::boost::mpl::if_<
::boost::parameter::aux::is_tagged_argument<TaggedArg0>
, ::boost::parameter::are_tagged_arguments<TaggedArgs...>
, ::boost::mpl::false_
>::type
{
};
}} // namespace boost::parameter
#else // !defined(BOOST_PARAMETER_HAS_PERFECT_FORWARDING)
#define BOOST_PARAMETER_ARE_TAGGED_ARGUMENTS_END_Z(z, n, false_t) , false_t>
/**/
#include <boost/parameter/aux_/is_tagged_argument.hpp>
#include <boost/mpl/eval_if.hpp>
#include <boost/preprocessor/cat.hpp>
#define BOOST_PARAMETER_ARE_TAGGED_ARGUMENTS_BEGIN_Z(z, n, prefix) \
::boost::mpl::eval_if< \
::boost::parameter::aux::is_tagged_argument<BOOST_PP_CAT(prefix, n)>,
/**/
#include <boost/parameter/aux_/void.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/preprocessor/arithmetic/sub.hpp>
#include <boost/preprocessor/facilities/intercept.hpp>
#include <boost/preprocessor/repetition/repeat.hpp>
#include <boost/preprocessor/repetition/enum_params.hpp>
#include <boost/preprocessor/repetition/enum_trailing_params.hpp>
#define BOOST_PARAMETER_ARE_TAGGED_ARGUMENTS_OVERLOADS_Z(z, n, prefix) \
template <BOOST_PP_ENUM_PARAMS_Z(z, n, typename prefix)> \
struct are_tagged_arguments< \
BOOST_PP_ENUM_PARAMS_Z(z, n, prefix) \
BOOST_PP_ENUM_TRAILING_PARAMS_Z( \
z \
, BOOST_PP_SUB(BOOST_PARAMETER_COMPOSE_MAX_ARITY, n) \
, ::boost::parameter::void_ BOOST_PP_INTERCEPT \
) \
> : BOOST_PP_CAT(BOOST_PP_REPEAT_, z)( \
n \
, BOOST_PARAMETER_ARE_TAGGED_ARGUMENTS_BEGIN_Z \
, prefix \
) \
::boost::mpl::true_ \
BOOST_PP_CAT(BOOST_PP_REPEAT_, z)( \
n \
, BOOST_PARAMETER_ARE_TAGGED_ARGUMENTS_END_Z \
, ::boost::mpl::false_ \
)::type \
{ \
};
/**/
#include <boost/preprocessor/arithmetic/inc.hpp>
#include <boost/preprocessor/repetition/enum_binary_params.hpp>
namespace boost { namespace parameter {
template <
BOOST_PP_ENUM_BINARY_PARAMS(
BOOST_PP_INC(BOOST_PARAMETER_COMPOSE_MAX_ARITY)
, typename TaggedArg
, = ::boost::parameter::void_ BOOST_PP_INTERCEPT
)
>
struct are_tagged_arguments;
}} // namespace boost::parameter
#include <boost/preprocessor/repetition/repeat_from_to.hpp>
namespace boost { namespace parameter {
BOOST_PP_REPEAT_FROM_TO(
1
, BOOST_PP_INC(BOOST_PARAMETER_COMPOSE_MAX_ARITY)
, BOOST_PARAMETER_ARE_TAGGED_ARGUMENTS_OVERLOADS_Z
, TaggedArg
)
}} // namespace boost::parameter
#undef BOOST_PARAMETER_ARE_TAGGED_ARGUMENTS_OVERLOADS_Z
#undef BOOST_PARAMETER_ARE_TAGGED_ARGUMENTS_BEGIN_Z
#undef BOOST_PARAMETER_ARE_TAGGED_ARGUMENTS_END_Z
#endif // BOOST_PARAMETER_HAS_PERFECT_FORWARDING
#endif // include guard