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1 | /*============================================================================= |
2 | Copyright (c) 2001-2011 Joel de Guzman | |
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 | #if !defined(FUSION_MPL_ITERATOR_CATEGORY_07212005_0923) | |
8 | #define FUSION_MPL_ITERATOR_CATEGORY_07212005_0923 | |
9 | ||
10 | namespace boost { namespace mpl | |
11 | { | |
12 | struct forward_iterator_tag; | |
13 | struct bidirectional_iterator_tag; | |
14 | struct random_access_iterator_tag; | |
15 | }} | |
16 | ||
17 | namespace boost { namespace fusion | |
18 | { | |
19 | struct forward_traversal_tag; | |
20 | struct bidirectional_traversal_tag; | |
21 | struct random_access_traversal_tag; | |
22 | }} | |
23 | ||
24 | namespace boost { namespace fusion { namespace detail | |
25 | { | |
26 | template <typename Category> | |
27 | struct mpl_iterator_category; | |
28 | ||
29 | template <> | |
30 | struct mpl_iterator_category<mpl::forward_iterator_tag> | |
31 | { | |
32 | typedef forward_traversal_tag type; | |
33 | }; | |
34 | ||
35 | template <> | |
36 | struct mpl_iterator_category<mpl::bidirectional_iterator_tag> | |
37 | { | |
38 | typedef bidirectional_traversal_tag type; | |
39 | }; | |
40 | ||
41 | template <> | |
42 | struct mpl_iterator_category<mpl::random_access_iterator_tag> | |
43 | { | |
44 | typedef random_access_traversal_tag type; | |
45 | }; | |
46 | ||
47 | template <> | |
48 | struct mpl_iterator_category<forward_traversal_tag> | |
49 | { | |
50 | typedef forward_traversal_tag type; | |
51 | }; | |
52 | ||
53 | template <> | |
54 | struct mpl_iterator_category<bidirectional_traversal_tag> | |
55 | { | |
56 | typedef bidirectional_traversal_tag type; | |
57 | }; | |
58 | ||
59 | template <> | |
60 | struct mpl_iterator_category<random_access_traversal_tag> | |
61 | { | |
62 | typedef random_access_traversal_tag type; | |
63 | }; | |
64 | }}} | |
65 | ||
66 | #endif |