| /*============================================================================= |
| Copyright (c) 2006 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_IS_SEGMENTED_03202006_0015) |
| #define FUSION_IS_SEGMENTED_03202006_0015 |
| |
| #include <boost/fusion/support/config.hpp> |
| #include <boost/mpl/bool.hpp> |
| #include <boost/fusion/support/tag_of.hpp> |
| |
| namespace boost { namespace fusion |
| { |
| // Special tags: |
| struct sequence_facade_tag; |
| struct iterator_range_tag; |
| |
| namespace extension |
| { |
| template <typename Tag> |
| struct is_segmented_impl |
| { |
| template <typename Sequence> |
| struct apply |
| : mpl::false_ |
| {}; |
| }; |
| |
| template <> |
| struct is_segmented_impl<sequence_facade_tag> |
| { |
| template <typename Sequence> |
| struct apply : Sequence::is_segmented {}; |
| }; |
| |
| template <> |
| struct is_segmented_impl<iterator_range_tag>; |
| } |
| |
| namespace traits |
| { |
| template <typename Sequence> |
| struct is_segmented |
| : mpl::bool_< |
| (bool)extension::is_segmented_impl<typename traits::tag_of<Sequence>::type>:: |
| template apply<Sequence>::type::value |
| > |
| { |
| }; |
| } |
| }} |
| |
| #endif |