projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /*============================================================================= |
| 2 | Copyright (c) 2001-2011 Joel de Guzman | |
| 3 | Copyright (c) 2005 Eric Niebler | |
| 4 | ||
| 5 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
| 6 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
| 7 | ==============================================================================*/ | |
| 8 | #if !defined(FUSION_NEXT_IMPL_07172005_0836) | |
| 9 | #define FUSION_NEXT_IMPL_07172005_0836 | |
| 10 | ||
| 11 | #include <boost/fusion/support/config.hpp> | |
| 12 | #include <boost/fusion/iterator/next.hpp> | |
| 13 | #include <boost/fusion/iterator/equal_to.hpp> | |
| 14 | #include <boost/mpl/eval_if.hpp> | |
| 15 | #include <boost/mpl/identity.hpp> | |
| 16 | #include <boost/type_traits/is_const.hpp> | |
| 17 | #include <boost/type_traits/add_const.hpp> | |
| 18 | ||
| 19 | namespace boost { namespace fusion | |
| 20 | { | |
| 21 | struct cons_iterator_tag; | |
| 22 | ||
| 23 | template <typename Cons> | |
| 24 | struct cons_iterator; | |
| 25 | ||
| 26 | namespace extension | |
| 27 | { | |
| 28 | template <typename Tag> | |
| 29 | struct next_impl; | |
| 30 | ||
| 31 | template <> | |
| 32 | struct next_impl<cons_iterator_tag> | |
| 33 | { | |
| 34 | template <typename Iterator> | |
| 35 | struct apply | |
| 36 | { | |
| 37 | typedef typename Iterator::cons_type cons_type; | |
| 38 | typedef typename cons_type::cdr_type cdr_type; | |
| 39 | ||
| 40 | typedef cons_iterator< | |
| 41 | typename mpl::eval_if< | |
| 42 | is_const<cons_type> | |
| 43 | , add_const<cdr_type> | |
| 44 | , mpl::identity<cdr_type> | |
| 45 | >::type> | |
| 46 | type; | |
| 47 | ||
| 48 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 49 | static type | |
| 50 | call(Iterator const& i) | |
| 51 | { | |
| 52 | return type(i.cons.cdr); | |
| 53 | } | |
| 54 | }; | |
| 55 | }; | |
| 56 | } | |
| 57 | }} | |
| 58 | ||
| 59 | #endif | |
| 60 | ||
| 61 |