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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 |