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- /*=============================================================================
- Copyright (c) 2001-2011 Joel de Guzman
- Copyright (c) 2005 Eric Niebler
- 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)
- ==============================================================================*/
- #if !defined(FUSION_CONS_07172005_0843)
- #define FUSION_CONS_07172005_0843
- #include <boost/fusion/support/config.hpp>
- #include <boost/fusion/support/void.hpp>
- #include <boost/fusion/support/detail/enabler.hpp>
- #include <boost/fusion/container/list/cons_fwd.hpp>
- #include <boost/fusion/support/detail/access.hpp>
- #include <boost/fusion/sequence/intrinsic/begin.hpp>
- #include <boost/fusion/sequence/intrinsic/end.hpp>
- #include <boost/fusion/iterator/next.hpp>
- #include <boost/fusion/iterator/deref.hpp>
- #include <boost/fusion/container/list/nil.hpp>
- #include <boost/fusion/container/list/cons_iterator.hpp>
- #include <boost/fusion/container/list/detail/begin_impl.hpp>
- #include <boost/fusion/container/list/detail/end_impl.hpp>
- #include <boost/fusion/container/list/detail/at_impl.hpp>
- #include <boost/fusion/container/list/detail/value_at_impl.hpp>
- #include <boost/fusion/container/list/detail/empty_impl.hpp>
- #include <boost/type_traits/is_convertible.hpp>
- #include <boost/type_traits/is_base_of.hpp>
- #include <boost/utility/enable_if.hpp>
- #include <boost/fusion/support/sequence_base.hpp>
- #include <boost/fusion/support/is_sequence.hpp>
- #include <boost/mpl/int.hpp>
- #include <boost/mpl/bool.hpp>
- #include <boost/mpl/and.hpp>
- #include <boost/mpl/not.hpp>
- namespace boost { namespace fusion
- {
- struct cons_tag;
- struct forward_traversal_tag;
- struct fusion_sequence_tag;
- template <typename Car, typename Cdr /*= nil_*/>
- struct cons : sequence_base<cons<Car, Cdr> >
- {
- typedef mpl::int_<Cdr::size::value+1> size;
- typedef cons_tag fusion_tag;
- typedef fusion_sequence_tag tag; // this gets picked up by MPL
- typedef mpl::false_ is_view;
- typedef forward_traversal_tag category;
- typedef Car car_type;
- typedef Cdr cdr_type;
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- cons()
- : car(), cdr() {}
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- explicit cons(typename detail::call_param<Car>::type in_car)
- : car(in_car), cdr() {}
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- cons(
- typename detail::call_param<Car>::type in_car
- , typename detail::call_param<Cdr>::type in_cdr)
- : car(in_car), cdr(in_cdr) {}
-
- template <typename Car2, typename Cdr2>
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- cons(cons<Car2, Cdr2> const& rhs)
- : car(rhs.car), cdr(rhs.cdr) {}
- #if BOOST_WORKAROUND(BOOST_GCC, / 100 == 406) && !defined(BOOST_NO_CXX11_FUNCTION_TEMPLATE_DEFAULT_ARGS)
- // Workaround for `array used as initializer` compile error on gcc 4.6 w/ c++0x.
- template <typename = void>
- #endif
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- cons(cons const& rhs)
- : car(rhs.car), cdr(rhs.cdr) {}
- template <typename Sequence>
- BOOST_FUSION_GPU_ENABLED
- cons(
- Sequence const& seq
- , typename boost::enable_if<
- mpl::and_<
- traits::is_sequence<Sequence>
- , mpl::not_<is_base_of<cons, Sequence> >
- , mpl::not_<is_convertible<Sequence, Car> > > // use copy to car instead
- , detail::enabler_
- >::type = detail::enabler
- )
- : car(*fusion::begin(seq))
- , cdr(fusion::next(fusion::begin(seq)), mpl::true_()) {}
- template <typename Iterator>
- BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- cons(Iterator const& iter, mpl::true_ /*this_is_an_iterator*/)
- : car(*iter)
- , cdr(fusion::next(iter), mpl::true_()) {}
- template <typename Car2, typename Cdr2>
- BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- cons& operator=(cons<Car2, Cdr2> const& rhs)
- {
- car = rhs.car;
- cdr = rhs.cdr;
- return *this;
- }
- BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- cons& operator=(cons const& rhs)
- {
- car = rhs.car;
- cdr = rhs.cdr;
- return *this;
- }
- template <typename Sequence>
- BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- typename boost::enable_if<
- mpl::and_<
- traits::is_sequence<Sequence>
- , mpl::not_<is_convertible<Sequence, Car> > >
- , cons&>::type
- operator=(Sequence const& seq)
- {
- typedef typename result_of::begin<Sequence const>::type Iterator;
- Iterator iter = fusion::begin(seq);
- this->assign_from_iter(iter);
- return *this;
- }
- template <typename Iterator>
- BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
- void assign_from_iter(Iterator const& iter)
- {
- car = *iter;
- cdr.assign_from_iter(fusion::next(iter));
- }
- car_type car;
- cdr_type cdr;
- };
- }}
- #endif
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