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1 // Copyright Neil Groves 2009. Use, modification and
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2 // distribution is subject to the Boost Software License, Version
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3 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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4 // http://www.boost.org/LICENSE_1_0.txt)
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5 //
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6 //
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7 // For more information, see http://www.boost.org/libs/range/
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8 //
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9 #ifndef BOOST_RANGE_ALGORITHM_REVERSE_HPP_INCLUDED
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10 #define BOOST_RANGE_ALGORITHM_REVERSE_HPP_INCLUDED
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11
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12 #include <boost/concept_check.hpp>
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13 #include <boost/range/begin.hpp>
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14 #include <boost/range/end.hpp>
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15 #include <boost/range/concepts.hpp>
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16 #include <boost/range/detail/range_return.hpp>
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17 #include <algorithm>
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18
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19 namespace boost
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20 {
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21 namespace range
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22 {
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23
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24 /// \brief template function reverse
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25 ///
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26 /// range-based version of the reverse std algorithm
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27 ///
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28 /// \pre BidirectionalRange is a model of the BidirectionalRangeConcept
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29 template<class BidirectionalRange>
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30 inline BidirectionalRange& reverse(BidirectionalRange& rng)
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31 {
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32 BOOST_RANGE_CONCEPT_ASSERT(( BidirectionalRangeConcept<BidirectionalRange> ));
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33 std::reverse(boost::begin(rng), boost::end(rng));
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34 return rng;
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35 }
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36
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37 /// \overload
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38 template<class BidirectionalRange>
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39 inline const BidirectionalRange& reverse(const BidirectionalRange& rng)
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40 {
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41 BOOST_RANGE_CONCEPT_ASSERT(( BidirectionalRangeConcept<const BidirectionalRange> ));
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42 std::reverse(boost::begin(rng), boost::end(rng));
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43 return rng;
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44 }
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45
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46 } // namespace range
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47 using range::reverse;
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48 } // namespace boost
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49
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50 #endif // include guard
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