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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) {}
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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