1 | /*============================================================================= |
2 | Copyright (c) 2011 Eric Niebler |
3 | |
4 | Distributed under the Boost Software License, Version 1.0. (See accompanying |
5 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
6 | ==============================================================================*/ |
7 | |
8 | #if !defined(BOOST_FUSION_ITERATOR_RANGE_SIZE_IMPL_HPP_INCLUDED) |
9 | #define BOOST_FUSION_ITERATOR_RANGE_SIZE_IMPL_HPP_INCLUDED |
10 | |
11 | #include <boost/fusion/support/config.hpp> |
12 | #include <boost/fusion/iterator/distance.hpp> |
13 | |
14 | namespace boost { namespace fusion |
15 | { |
16 | struct iterator_range_tag; |
17 | |
18 | namespace extension |
19 | { |
20 | template <typename Tag> |
21 | struct size_impl; |
22 | |
23 | template <> |
24 | struct size_impl<iterator_range_tag> |
25 | { |
26 | template <typename Seq> |
27 | struct apply |
28 | : result_of::distance< |
29 | typename Seq::begin_type, |
30 | typename Seq::end_type |
31 | > |
32 | {}; |
33 | }; |
34 | } |
35 | }} |
36 | |
37 | #endif |
38 | |
39 | |