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_ADJACENT_FIND_HPP_INCLUDED
10#define BOOST_RANGE_ALGORITHM_ADJACENT_FIND_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/value_type.hpp>
17#include <boost/range/detail/range_return.hpp>
18#include <algorithm>
19
20namespace boost
21{
22 namespace range
23 {
24
25/// \brief template function adjacent_find
26///
27/// range-based version of the adjacent_find std algorithm
28///
29/// \pre ForwardRange is a model of the ForwardRangeConcept
30/// \pre BinaryPredicate is a model of the BinaryPredicateConcept
31template< typename ForwardRange >
32inline typename range_iterator<ForwardRange>::type
33adjacent_find(ForwardRange & rng)
34{
35 BOOST_RANGE_CONCEPT_ASSERT((ForwardRangeConcept<ForwardRange>));
36 return std::adjacent_find(boost::begin(rng),boost::end(rng));
37}
38
39/// \overload
40template< typename ForwardRange >
41inline typename range_iterator<const ForwardRange>::type
42adjacent_find(const ForwardRange& rng)
43{
44 BOOST_RANGE_CONCEPT_ASSERT((ForwardRangeConcept<ForwardRange>));
45 return std::adjacent_find(boost::begin(rng),boost::end(rng));
46}
47
48/// \overload
49template< typename ForwardRange, typename BinaryPredicate >
50inline typename range_iterator<ForwardRange>::type
51adjacent_find(ForwardRange & rng, BinaryPredicate pred)
52{
53 BOOST_RANGE_CONCEPT_ASSERT((ForwardRangeConcept<ForwardRange>));
54 BOOST_RANGE_CONCEPT_ASSERT((BinaryPredicateConcept<BinaryPredicate,
55 typename range_value<ForwardRange>::type,
56 typename range_value<ForwardRange>::type>));
57 return std::adjacent_find(boost::begin(rng),boost::end(rng),pred);
58}
59
60/// \overload
61template< typename ForwardRange, typename BinaryPredicate >
62inline typename range_iterator<const ForwardRange>::type
63adjacent_find(const ForwardRange& rng, BinaryPredicate pred)
64{
65 BOOST_RANGE_CONCEPT_ASSERT((ForwardRangeConcept<ForwardRange>));
66 BOOST_RANGE_CONCEPT_ASSERT((BinaryPredicateConcept<BinaryPredicate,
67 typename range_value<const ForwardRange>::type,
68 typename range_value<const ForwardRange>::type>));
69 return std::adjacent_find(boost::begin(rng),boost::end(rng),pred);
70}
71
72// range_return overloads
73
74/// \overload
75template< range_return_value re, typename ForwardRange >
76inline typename range_return<ForwardRange,re>::type
77adjacent_find(ForwardRange & rng)
78{
79 BOOST_RANGE_CONCEPT_ASSERT((ForwardRangeConcept<ForwardRange>));
80 return range_return<ForwardRange,re>::
81 pack(std::adjacent_find(boost::begin(rng),boost::end(rng)),
82 rng);
83}
84
85/// \overload
86template< range_return_value re, typename ForwardRange >
87inline typename range_return<const ForwardRange,re>::type
88adjacent_find(const ForwardRange& rng)
89{
90 BOOST_RANGE_CONCEPT_ASSERT((ForwardRangeConcept<ForwardRange>));
91 return range_return<const ForwardRange,re>::
92 pack(std::adjacent_find(boost::begin(rng),boost::end(rng)),
93 rng);
94}
95
96/// \overload
97template< range_return_value re, typename ForwardRange, typename BinaryPredicate >
98inline typename range_return<ForwardRange,re>::type
99adjacent_find(ForwardRange& rng, BinaryPredicate pred)
100{
101 BOOST_RANGE_CONCEPT_ASSERT((ForwardRangeConcept<ForwardRange>));
102 BOOST_RANGE_CONCEPT_ASSERT((BinaryPredicateConcept<BinaryPredicate,
103 typename range_value<ForwardRange>::type,
104 typename range_value<ForwardRange>::type>));
105 return range_return<ForwardRange,re>::
106 pack(std::adjacent_find(boost::begin(rng),boost::end(rng),pred),
107 rng);
108}
109
110/// \overload
111template< range_return_value re, typename ForwardRange, typename BinaryPredicate >
112inline typename range_return<const ForwardRange,re>::type
113adjacent_find(const ForwardRange& rng, BinaryPredicate pred)
114{
115 BOOST_RANGE_CONCEPT_ASSERT((ForwardRangeConcept<ForwardRange>));
116 return range_return<const ForwardRange,re>::
117 pack(std::adjacent_find(boost::begin(rng),boost::end(rng),pred),
118 rng);
119}
120
121 } // namespace range
122 using range::adjacent_find;
123} // namespace boost
124
125#endif // include guard
126

source code of boost/boost/range/algorithm/adjacent_find.hpp