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1 | // Boost.Range library |
2 | // | |
3 | // Copyright Neil Groves 2009. Use, modification and | |
4 | // distribution is subject to the Boost Software License, Version | |
5 | // 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
6 | // http://www.boost.org/LICENSE_1_0.txt) | |
7 | // | |
8 | // For more information, see http://www.boost.org/libs/range/ | |
9 | // | |
10 | #ifndef BOOST_RANGE_ALGORITHM_EXT_OVERWRITE_HPP_INCLUDED | |
11 | #define BOOST_RANGE_ALGORITHM_EXT_OVERWRITE_HPP_INCLUDED | |
12 | ||
13 | #include <boost/range/config.hpp> | |
14 | #include <boost/range/concepts.hpp> | |
15 | #include <boost/range/difference_type.hpp> | |
16 | #include <boost/range/iterator.hpp> | |
17 | #include <boost/range/begin.hpp> | |
18 | #include <boost/range/end.hpp> | |
19 | #include <boost/assert.hpp> | |
20 | ||
21 | namespace boost | |
22 | { | |
23 | namespace range | |
24 | { | |
25 | ||
26 | template< class SinglePassRange1, class SinglePassRange2 > | |
27 | inline void overwrite( const SinglePassRange1& from, SinglePassRange2& to ) | |
28 | { | |
29 | BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> )); | |
30 | BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange2> )); | |
31 | ||
32 | BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange1>::type | |
33 | i = boost::begin(from), e = boost::end(from); | |
34 | ||
35 | BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type | |
36 | out = boost::begin(to); | |
37 | ||
38 | #ifndef NDEBUG | |
39 | BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type | |
40 | last_out = boost::end(to); | |
41 | #endif | |
42 | ||
43 | for( ; i != e; ++out, ++i ) | |
44 | { | |
45 | #ifndef NDEBUG | |
46 | BOOST_ASSERT( out != last_out | |
47 | && "out of bounds in boost::overwrite()" ); | |
48 | #endif | |
49 | *out = *i; | |
50 | } | |
51 | } | |
52 | ||
53 | template< class SinglePassRange1, class SinglePassRange2 > | |
54 | inline void overwrite( const SinglePassRange1& from, const SinglePassRange2& to ) | |
55 | { | |
56 | BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange1> )); | |
57 | BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<const SinglePassRange2> )); | |
58 | ||
59 | BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange1>::type | |
60 | i = boost::begin(from), e = boost::end(from); | |
61 | ||
62 | BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange2>::type | |
63 | out = boost::begin(to); | |
64 | ||
65 | #ifndef NDEBUG | |
66 | BOOST_DEDUCED_TYPENAME range_iterator<const SinglePassRange2>::type | |
67 | last_out = boost::end(to); | |
68 | #endif | |
69 | ||
70 | for( ; i != e; ++out, ++i ) | |
71 | { | |
72 | #ifndef NDEBUG | |
73 | BOOST_ASSERT( out != last_out | |
74 | && "out of bounds in boost::overwrite()" ); | |
75 | #endif | |
76 | *out = *i; | |
77 | } | |
78 | } | |
79 | ||
80 | } // namespace range | |
81 | using range::overwrite; | |
82 | } // namespace boost | |
83 | ||
84 | #endif // include guard |