| /*============================================================================= |
| Copyright (c) 2005 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_BEGIN_IMPL_07172005_0824) |
| #define FUSION_BEGIN_IMPL_07172005_0824 |
| |
| #include <boost/mpl/if.hpp> |
| #include <boost/type_traits/is_const.hpp> |
| |
| namespace boost { namespace fusion |
| { |
| struct nil; |
| |
| struct cons_tag; |
| |
| template <typename Car, typename Cdr> |
| struct cons; |
| |
| template <typename Cons> |
| struct cons_iterator; |
| |
| namespace extension |
| { |
| template <typename Tag> |
| struct begin_impl; |
| |
| template <> |
| struct begin_impl<cons_tag> |
| { |
| template <typename Sequence> |
| struct apply |
| { |
| typedef cons_iterator<Sequence> type; |
| |
| static type |
| call(Sequence& t) |
| { |
| return type(t); |
| } |
| }; |
| }; |
| } |
| }} |
| |
| #endif |