// Copyright David Abrahams, Daniel Wallin 2003.
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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_PACK_TAG_DEDUCED_HPP
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#define BOOST_PARAMETER_AUX_PACK_TAG_DEDUCED_HPP
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#include <boost/parameter/aux_/set.hpp>
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#include <boost/parameter/aux_/pack/tag_type.hpp>
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#include <boost/parameter/config.hpp>
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#if defined(BOOST_PARAMETER_CAN_USE_MP11)
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#include <boost/mp11/list.hpp>
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#include <boost/mp11/utility.hpp>
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#else
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#include <boost/mpl/pair.hpp>
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#include <boost/mpl/apply_wrap.hpp>
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#endif
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namespace boost { namespace parameter { namespace aux {
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// Tags a deduced argument Arg with the keyword tag of Spec using TagFn.
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// Returns the tagged argument and the mpl::set<> UsedArgs with the
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// tag of Spec inserted.
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template <typename UsedArgs, typename Spec, typename Arg, typename TagFn>
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struct tag_deduced
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{
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#if defined(BOOST_PARAMETER_CAN_USE_MP11)
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using type = ::boost::mp11::mp_list<
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::boost::mp11::mp_apply_q<
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TagFn
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, ::boost::mp11::mp_list<
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typename ::boost::parameter::aux::tag_type<Spec>::type
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, Arg
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>
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>
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#else
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typedef ::boost::mpl::pair<
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typename ::boost::mpl::apply_wrap2<
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TagFn
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, typename ::boost::parameter::aux::tag_type<Spec>::type
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, Arg
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>::type
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#endif // BOOST_PARAMETER_CAN_USE_MP11
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, typename ::boost::parameter::aux::insert_<
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UsedArgs
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, typename ::boost::parameter::aux::tag_type<Spec>::type
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>::type
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#if defined(BOOST_PARAMETER_CAN_USE_MP11)
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>;
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#else
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> type;
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#endif
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};
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}}} // namespace boost::parameter::aux
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#endif // include guard
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