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Diffstat (limited to 'src/third_party/boost-1.69.0/boost/fusion/container/list/cons_iterator.hpp')
-rw-r--r-- | src/third_party/boost-1.69.0/boost/fusion/container/list/cons_iterator.hpp | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/third_party/boost-1.69.0/boost/fusion/container/list/cons_iterator.hpp b/src/third_party/boost-1.69.0/boost/fusion/container/list/cons_iterator.hpp new file mode 100644 index 00000000000..58b7fd9e360 --- /dev/null +++ b/src/third_party/boost-1.69.0/boost/fusion/container/list/cons_iterator.hpp @@ -0,0 +1,111 @@ +/*============================================================================= + 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_ITERATOR_07172005_0849) +#define FUSION_CONS_ITERATOR_07172005_0849 + +#include <boost/fusion/support/config.hpp> +#include <boost/type_traits/add_const.hpp> +#include <boost/fusion/support/iterator_base.hpp> +#include <boost/fusion/container/list/detail/deref_impl.hpp> +#include <boost/fusion/container/list/detail/next_impl.hpp> +#include <boost/fusion/container/list/detail/value_of_impl.hpp> +#include <boost/fusion/container/list/detail/equal_to_impl.hpp> +#include <boost/fusion/container/list/list_fwd.hpp> + +namespace boost { namespace fusion +{ + struct nil_; + struct cons_iterator_tag; + struct forward_traversal_tag; + + template <typename Cons> + struct cons_iterator_identity; + + template <typename Cons = nil_> + struct cons_iterator : iterator_base<cons_iterator<Cons> > + { + typedef cons_iterator_tag fusion_tag; + typedef forward_traversal_tag category; + typedef Cons cons_type; + typedef cons_iterator_identity< + typename add_const<Cons>::type> + identity; + + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + explicit cons_iterator(cons_type& in_cons) BOOST_NOEXCEPT + : cons(in_cons) {} + + cons_type& cons; + + private: + // silence MSVC warning C4512: assignment operator could not be generated + cons_iterator& operator= (cons_iterator const&); + }; + + struct nil_iterator : iterator_base<nil_iterator> + { + typedef forward_traversal_tag category; + typedef cons_iterator_tag fusion_tag; + typedef nil_ cons_type; + typedef cons_iterator_identity< + add_const<nil_>::type> + identity; + + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + nil_iterator() BOOST_NOEXCEPT {} + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + explicit nil_iterator(nil_ const&) BOOST_NOEXCEPT {} + }; + + template <> + struct cons_iterator<nil_> : nil_iterator + { + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + cons_iterator() BOOST_NOEXCEPT {} + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + explicit cons_iterator(nil_ const&) BOOST_NOEXCEPT {} + }; + + template <> + struct cons_iterator<nil_ const> : nil_iterator + { + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + cons_iterator() BOOST_NOEXCEPT {} + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + explicit cons_iterator(nil_ const&) BOOST_NOEXCEPT {} + }; + + template <> + struct cons_iterator<list<> > : nil_iterator + { + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + cons_iterator() BOOST_NOEXCEPT {} + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + explicit cons_iterator(nil_ const&) BOOST_NOEXCEPT {} + }; + + template <> + struct cons_iterator<list<> const> : nil_iterator + { + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + cons_iterator() BOOST_NOEXCEPT {} + BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED + explicit cons_iterator(nil_ const&) BOOST_NOEXCEPT {} + }; +}} + +#ifdef BOOST_FUSION_WORKAROUND_FOR_LWG_2408 +namespace std +{ + template <typename Cons> + struct iterator_traits< ::boost::fusion::cons_iterator<Cons> > + { }; +} +#endif + +#endif |