// Copyright Daniel Wallin 2006.
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// Copyright Cromwell D. Enage 2017.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_PARAMETER_AUX_PP_IMPL_ARGUMENT_PACK_HPP
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#define BOOST_PARAMETER_AUX_PP_IMPL_ARGUMENT_PACK_HPP
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#include <boost/parameter/aux_/pack/tag_keyword_arg.hpp>
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#include <boost/parameter/aux_/pack/make_arg_list.hpp>
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#include <boost/parameter/config.hpp>
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#if defined(BOOST_PARAMETER_HAS_PERFECT_FORWARDING)
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#include <boost/parameter/aux_/pack/make_parameter_spec_items.hpp>
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#if defined(BOOST_PARAMETER_CAN_USE_MP11)
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#include <boost/mp11/integral.hpp>
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#include <boost/mp11/list.hpp>
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#else
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#include <boost/mpl/bool.hpp>
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#include <boost/mpl/pair.hpp>
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#endif
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namespace boost { namespace parameter { namespace aux {
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template <typename Parameters, typename ...Args>
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struct argument_pack
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{
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typedef typename ::boost::parameter::aux::make_arg_list<
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typename ::boost::parameter::aux::make_parameter_spec_items<
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typename Parameters::parameter_spec
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, Args...
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>::type
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, typename Parameters::deduced_list
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, ::boost::parameter::aux::tag_keyword_arg
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#if defined(BOOST_PARAMETER_CAN_USE_MP11)
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, ::boost::mp11::mp_false
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#else
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, ::boost::mpl::false_
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#endif
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>::type result;
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#if defined(BOOST_PARAMETER_CAN_USE_MP11)
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using type = ::boost::mp11::mp_at_c<result,0>;
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#else
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typedef typename ::boost::mpl::first<result>::type type;
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#endif
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};
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}}} // namespace boost::parameter::aux
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#else // !defined(BOOST_PARAMETER_HAS_PERFECT_FORWARDING)
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#include <boost/parameter/aux_/void.hpp>
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#include <boost/parameter/aux_/pack/make_items.hpp>
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#include <boost/parameter/aux_/preprocessor/no_perfect_forwarding_begin.hpp>
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#include <boost/preprocessor/facilities/intercept.hpp>
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#include <boost/preprocessor/repetition/enum_trailing_binary_params.hpp>
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#include <boost/mpl/bool.hpp>
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#include <boost/mpl/pair.hpp>
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namespace boost { namespace parameter { namespace aux {
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template <
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typename Parameters
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BOOST_PP_ENUM_TRAILING_BINARY_PARAMS(
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BOOST_PARAMETER_MAX_ARITY
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, typename A
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, = ::boost::parameter::void_ BOOST_PP_INTERCEPT
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)
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>
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struct argument_pack
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{
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typedef typename ::boost::parameter::aux::make_arg_list<
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typename BOOST_PARAMETER_build_arg_list(
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BOOST_PARAMETER_MAX_ARITY
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, ::boost::parameter::aux::make_items
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, typename Parameters::parameter_spec
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, A
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)::type
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, typename Parameters::deduced_list
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, ::boost::parameter::aux::tag_keyword_arg
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, ::boost::mpl::false_
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>::type result;
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typedef typename ::boost::mpl::first<result>::type type;
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};
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}}} // namespace boost::parameter::aux
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#include <boost/parameter/aux_/preprocessor/no_perfect_forwarding_end.hpp>
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#endif // BOOST_PARAMETER_HAS_PERFECT_FORWARDING
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#endif // include guard
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