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1 | // Copyright Neil Groves 2009. Use, modification and |
2 | // distribution is subject to the Boost Software License, Version | |
3 | // 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
4 | // http://www.boost.org/LICENSE_1_0.txt) | |
5 | // | |
6 | // | |
7 | // For more information, see http://www.boost.org/libs/range/ | |
8 | // | |
9 | #ifndef BOOST_RANGE_ALGORITHM_PARTITION__HPP_INCLUDED | |
10 | #define BOOST_RANGE_ALGORITHM_PARTITION__HPP_INCLUDED | |
11 | ||
12 | #include <boost/concept_check.hpp> | |
13 | #include <boost/range/begin.hpp> | |
14 | #include <boost/range/end.hpp> | |
15 | #include <boost/range/concepts.hpp> | |
16 | #include <boost/range/detail/range_return.hpp> | |
17 | #include <algorithm> | |
18 | ||
19 | namespace boost | |
20 | { | |
21 | namespace range | |
22 | { | |
23 | ||
24 | /// \brief template function partition | |
25 | /// | |
26 | /// range-based version of the partition std algorithm | |
27 | /// | |
28 | /// \pre ForwardRange is a model of the ForwardRangeConcept | |
29 | template<class ForwardRange, class UnaryPredicate> | |
30 | inline BOOST_DEDUCED_TYPENAME range_iterator<ForwardRange>::type | |
31 | partition(ForwardRange& rng, UnaryPredicate pred) | |
32 | { | |
33 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> )); | |
34 | return std::partition(boost::begin(rng),boost::end(rng),pred); | |
35 | } | |
36 | ||
37 | /// \overload | |
38 | template<class ForwardRange, class UnaryPredicate> | |
39 | inline BOOST_DEDUCED_TYPENAME range_iterator<ForwardRange>::type | |
40 | partition(const ForwardRange& rng, UnaryPredicate pred) | |
41 | { | |
42 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> )); | |
43 | return std::partition(boost::begin(rng),boost::end(rng),pred); | |
44 | } | |
45 | ||
46 | // range_return overloads | |
47 | ||
48 | /// \overload | |
49 | template< range_return_value re, class ForwardRange, | |
50 | class UnaryPredicate > | |
51 | inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange,re>::type | |
52 | partition(ForwardRange& rng, UnaryPredicate pred) | |
53 | { | |
54 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> )); | |
55 | return boost::range_return<ForwardRange,re>:: | |
56 | pack(std::partition(boost::begin(rng), boost::end(rng), pred), rng); | |
57 | } | |
58 | ||
59 | /// \overload | |
60 | template< range_return_value re, class ForwardRange, | |
61 | class UnaryPredicate > | |
62 | inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange,re>::type | |
63 | partition(const ForwardRange& rng, UnaryPredicate pred) | |
64 | { | |
65 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> )); | |
66 | return boost::range_return<const ForwardRange,re>:: | |
67 | pack(std::partition(boost::begin(rng), boost::end(rng), pred), rng); | |
68 | } | |
69 | ||
70 | } // namespace range | |
71 | using range::partition; | |
72 | } // namespace boost | |
73 | ||
74 | #endif // include guard |