145 lines
5.1 KiB
Plaintext
145 lines
5.1 KiB
Plaintext
/*=============================================================================
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Copyright (c) 2001-2011 Joel de Guzman
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Copyright (c) 2005 Eric Niebler
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(FUSION_CONS_07172005_0843)
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#define FUSION_CONS_07172005_0843
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/support/void.hpp>
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#include <boost/fusion/support/detail/enabler.hpp>
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#include <boost/fusion/container/list/cons_fwd.hpp>
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#include <boost/fusion/support/detail/access.hpp>
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#include <boost/fusion/sequence/intrinsic/begin.hpp>
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#include <boost/fusion/sequence/intrinsic/end.hpp>
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#include <boost/fusion/iterator/next.hpp>
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#include <boost/fusion/iterator/deref.hpp>
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#include <boost/fusion/container/list/nil.hpp>
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#include <boost/fusion/container/list/cons_iterator.hpp>
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#include <boost/fusion/container/list/detail/begin_impl.hpp>
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#include <boost/fusion/container/list/detail/end_impl.hpp>
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#include <boost/fusion/container/list/detail/at_impl.hpp>
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#include <boost/fusion/container/list/detail/value_at_impl.hpp>
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#include <boost/fusion/container/list/detail/empty_impl.hpp>
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#include <boost/type_traits/is_convertible.hpp>
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#include <boost/type_traits/is_base_of.hpp>
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#include <boost/utility/enable_if.hpp>
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#include <boost/fusion/support/sequence_base.hpp>
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#include <boost/fusion/support/is_sequence.hpp>
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#include <boost/mpl/int.hpp>
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#include <boost/mpl/bool.hpp>
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#include <boost/mpl/and.hpp>
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#include <boost/mpl/not.hpp>
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namespace boost { namespace fusion
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{
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struct cons_tag;
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struct forward_traversal_tag;
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struct fusion_sequence_tag;
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template <typename Car, typename Cdr /*= nil_*/>
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struct cons : sequence_base<cons<Car, Cdr> >
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{
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typedef mpl::int_<Cdr::size::value+1> size;
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typedef cons_tag fusion_tag;
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typedef fusion_sequence_tag tag; // this gets picked up by MPL
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typedef mpl::false_ is_view;
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typedef forward_traversal_tag category;
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typedef Car car_type;
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typedef Cdr cdr_type;
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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cons()
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: car(), cdr() {}
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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explicit cons(typename detail::call_param<Car>::type in_car)
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: car(in_car), cdr() {}
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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cons(
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typename detail::call_param<Car>::type in_car
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, typename detail::call_param<Cdr>::type in_cdr)
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: car(in_car), cdr(in_cdr) {}
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template <typename Car2, typename Cdr2>
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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cons(cons<Car2, Cdr2> const& rhs)
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: car(rhs.car), cdr(rhs.cdr) {}
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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cons(cons const& rhs)
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: car(rhs.car), cdr(rhs.cdr) {}
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template <typename Sequence>
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BOOST_FUSION_GPU_ENABLED
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cons(
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Sequence const& seq
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, typename boost::enable_if<
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mpl::and_<
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traits::is_sequence<Sequence>
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, mpl::not_<is_base_of<cons, Sequence> >
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, mpl::not_<is_convertible<Sequence, Car> > > // use copy to car instead
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, detail::enabler_
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>::type = detail::enabler
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)
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: car(*fusion::begin(seq))
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, cdr(fusion::next(fusion::begin(seq)), mpl::true_()) {}
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template <typename Iterator>
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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cons(Iterator const& iter, mpl::true_ /*this_is_an_iterator*/)
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: car(*iter)
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, cdr(fusion::next(iter), mpl::true_()) {}
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template <typename Car2, typename Cdr2>
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BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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cons& operator=(cons<Car2, Cdr2> const& rhs)
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{
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car = rhs.car;
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cdr = rhs.cdr;
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return *this;
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}
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BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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cons& operator=(cons const& rhs)
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{
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car = rhs.car;
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cdr = rhs.cdr;
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return *this;
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}
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template <typename Sequence>
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BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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typename boost::enable_if<
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mpl::and_<
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traits::is_sequence<Sequence>
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, mpl::not_<is_convertible<Sequence, Car> > >
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, cons&>::type
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operator=(Sequence const& seq)
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{
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typedef typename result_of::begin<Sequence const>::type Iterator;
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Iterator iter = fusion::begin(seq);
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this->assign_from_iter(iter);
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return *this;
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}
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template <typename Iterator>
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BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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void assign_from_iter(Iterator const& iter)
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{
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car = *iter;
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cdr.assign_from_iter(fusion::next(iter));
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}
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car_type car;
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cdr_type cdr;
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};
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}}
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#endif
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