Chris@16
|
1 // Copyright Neil Groves 2009. Use, modification and
|
Chris@16
|
2 // distribution is subject to the Boost Software License, Version
|
Chris@16
|
3 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
|
Chris@16
|
4 // http://www.boost.org/LICENSE_1_0.txt)
|
Chris@16
|
5 //
|
Chris@16
|
6 //
|
Chris@16
|
7 // For more information, see http://www.boost.org/libs/range/
|
Chris@16
|
8 //
|
Chris@16
|
9 #ifndef BOOST_RANGE_ALGORITHM_TRANSFORM_HPP_INCLUDED
|
Chris@16
|
10 #define BOOST_RANGE_ALGORITHM_TRANSFORM_HPP_INCLUDED
|
Chris@16
|
11
|
Chris@16
|
12 #include <boost/assert.hpp>
|
Chris@16
|
13 #include <boost/concept_check.hpp>
|
Chris@16
|
14 #include <boost/range/begin.hpp>
|
Chris@16
|
15 #include <boost/range/end.hpp>
|
Chris@16
|
16 #include <boost/range/concepts.hpp>
|
Chris@16
|
17 #include <algorithm>
|
Chris@16
|
18
|
Chris@16
|
19 namespace boost
|
Chris@16
|
20 {
|
Chris@16
|
21 namespace range
|
Chris@16
|
22 {
|
Chris@16
|
23
|
Chris@16
|
24 /// \brief template function transform
|
Chris@16
|
25 ///
|
Chris@16
|
26 /// range-based version of the transform std algorithm
|
Chris@16
|
27 ///
|
Chris@16
|
28 /// \pre SinglePassRange1 is a model of the SinglePassRangeConcept
|
Chris@16
|
29 /// \pre SinglePassRange2 is a model of the SinglePassRangeConcept
|
Chris@16
|
30 /// \pre OutputIterator is a model of the OutputIteratorConcept
|
Chris@16
|
31 /// \pre UnaryOperation is a model of the UnaryFunctionConcept
|
Chris@16
|
32 /// \pre BinaryOperation is a model of the BinaryFunctionConcept
|
Chris@16
|
33 template< class SinglePassRange1,
|
Chris@16
|
34 class OutputIterator,
|
Chris@16
|
35 class UnaryOperation >
|
Chris@16
|
36 inline OutputIterator
|
Chris@16
|
37 transform(const SinglePassRange1& rng,
|
Chris@16
|
38 OutputIterator out,
|
Chris@16
|
39 UnaryOperation fun)
|
Chris@16
|
40 {
|
Chris@16
|
41 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> ));
|
Chris@16
|
42 return std::transform(boost::begin(rng),boost::end(rng),out,fun);
|
Chris@16
|
43 }
|
Chris@16
|
44
|
Chris@16
|
45 } // namespace range
|
Chris@16
|
46
|
Chris@16
|
47 namespace range_detail
|
Chris@16
|
48 {
|
Chris@16
|
49 template< class SinglePassTraversalReadableIterator1,
|
Chris@16
|
50 class SinglePassTraversalReadableIterator2,
|
Chris@16
|
51 class OutputIterator,
|
Chris@16
|
52 class BinaryFunction >
|
Chris@16
|
53 inline OutputIterator
|
Chris@16
|
54 transform_impl(SinglePassTraversalReadableIterator1 first1,
|
Chris@16
|
55 SinglePassTraversalReadableIterator1 last1,
|
Chris@16
|
56 SinglePassTraversalReadableIterator2 first2,
|
Chris@16
|
57 SinglePassTraversalReadableIterator2 last2,
|
Chris@16
|
58 OutputIterator out,
|
Chris@16
|
59 BinaryFunction fn)
|
Chris@16
|
60 {
|
Chris@101
|
61 for (; first1 != last1 && first2 != last2; ++first1, ++first2)
|
Chris@16
|
62 {
|
Chris@16
|
63 *out = fn(*first1, *first2);
|
Chris@16
|
64 ++out;
|
Chris@16
|
65 }
|
Chris@16
|
66 return out;
|
Chris@16
|
67 }
|
Chris@16
|
68 }
|
Chris@16
|
69
|
Chris@16
|
70 namespace range
|
Chris@16
|
71 {
|
Chris@16
|
72
|
Chris@16
|
73 /// \overload
|
Chris@16
|
74 template< class SinglePassRange1,
|
Chris@16
|
75 class SinglePassRange2,
|
Chris@16
|
76 class OutputIterator,
|
Chris@16
|
77 class BinaryOperation >
|
Chris@16
|
78 inline OutputIterator
|
Chris@16
|
79 transform(const SinglePassRange1& rng1,
|
Chris@16
|
80 const SinglePassRange2& rng2,
|
Chris@16
|
81 OutputIterator out,
|
Chris@16
|
82 BinaryOperation fun)
|
Chris@16
|
83 {
|
Chris@16
|
84 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> ));
|
Chris@16
|
85 BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange2> ));
|
Chris@16
|
86 return boost::range_detail::transform_impl(
|
Chris@16
|
87 boost::begin(rng1), boost::end(rng1),
|
Chris@16
|
88 boost::begin(rng2), boost::end(rng2),
|
Chris@16
|
89 out, fun);
|
Chris@16
|
90 }
|
Chris@16
|
91
|
Chris@16
|
92 } // namespace range
|
Chris@16
|
93 using range::transform;
|
Chris@16
|
94 } // namespace boost
|
Chris@16
|
95
|
Chris@16
|
96 #endif // include guard
|