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1 | #ifndef BOOST_METAPARSE_V1_UTIL_IN_RANGE_HPP |
2 | #define BOOST_METAPARSE_V1_UTIL_IN_RANGE_HPP | |
3 | ||
4 | // Copyright Abel Sinkovics (abel@sinkovics.hu) 2009 - 2010. | |
5 | // Distributed under the Boost Software License, Version 1.0. | |
6 | // (See accompanying file LICENSE_1_0.txt or copy at | |
7 | // http://www.boost.org/LICENSE_1_0.txt) | |
8 | ||
9 | #include <boost/mpl/less_equal.hpp> | |
10 | #include <boost/mpl/comparison.hpp> | |
11 | #include <boost/mpl/quote.hpp> | |
12 | #include <boost/mpl/bool.hpp> | |
13 | ||
14 | #include <boost/mpl/vector.hpp> | |
15 | ||
16 | namespace boost | |
17 | { | |
18 | namespace metaparse | |
19 | { | |
20 | namespace v1 | |
21 | { | |
22 | namespace util | |
23 | { | |
24 | template < | |
25 | class LowerBound = boost::mpl::na, | |
26 | class UpperBound = boost::mpl::na, | |
27 | class Item = boost::mpl::na | |
28 | > | |
29 | struct in_range : | |
30 | boost::mpl::bool_< | |
31 | boost::mpl::less_equal<LowerBound, Item>::type::value | |
32 | && boost::mpl::less_equal<Item, UpperBound>::type::value | |
33 | > | |
34 | {}; | |
35 | ||
36 | template <class LowerBound, class UpperBound> | |
37 | struct in_range<LowerBound, UpperBound, boost::mpl::na> | |
38 | { | |
39 | typedef in_range type; | |
40 | ||
41 | template <class Item = boost::mpl::na> | |
42 | struct apply : in_range<LowerBound, UpperBound, Item> {}; | |
43 | }; | |
44 | ||
45 | template <class LowerBound> | |
46 | struct in_range<LowerBound, boost::mpl::na, boost::mpl::na> | |
47 | { | |
48 | typedef in_range type; | |
49 | ||
50 | template < | |
51 | class UpperBound = boost::mpl::na, | |
52 | class Item = boost::mpl::na | |
53 | > | |
54 | struct apply : in_range<LowerBound, UpperBound, Item> {}; | |
55 | }; | |
56 | ||
57 | template <> | |
58 | struct in_range<boost::mpl::na, boost::mpl::na, boost::mpl::na> | |
59 | { | |
60 | typedef in_range type; | |
61 | ||
62 | template < | |
63 | class LowerBound = boost::mpl::na, | |
64 | class UpperBound = boost::mpl::na, | |
65 | class Item = boost::mpl::na | |
66 | > | |
67 | struct apply : in_range<LowerBound, UpperBound, Item> {}; | |
68 | }; | |
69 | } | |
70 | } | |
71 | } | |
72 | } | |
73 | ||
74 | #endif | |
75 |