1 | /*============================================================================= |
2 | Copyright (c) 2009 Christopher Schmidt |
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 | #ifndef BOOST_FUSION_ITERATOR_VALUE_OF_DATA_HPP |
9 | #define BOOST_FUSION_ITERATOR_VALUE_OF_DATA_HPP |
10 | |
11 | #include <boost/fusion/support/config.hpp> |
12 | #include <boost/fusion/support/tag_of.hpp> |
13 | |
14 | namespace boost { namespace fusion |
15 | { |
16 | struct iterator_facade_tag; |
17 | |
18 | namespace extension |
19 | { |
20 | template <typename> |
21 | struct value_of_data_impl; |
22 | |
23 | template <> |
24 | struct value_of_data_impl<iterator_facade_tag> |
25 | { |
26 | template <typename It> |
27 | struct apply |
28 | : It::template value_of_data<It> |
29 | {}; |
30 | }; |
31 | } |
32 | |
33 | namespace result_of |
34 | { |
35 | template <typename It> |
36 | struct value_of_data |
37 | : extension::value_of_data_impl<typename traits::tag_of<It>::type>:: |
38 | template apply<It> |
39 | {}; |
40 | } |
41 | }} |
42 | |
43 | #endif |
44 | |