ceph/src/boost/libs/range/include/boost/range/algorithm/reverse.hpp

   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_REVERSE_HPP_INCLUDED
  10 #define BOOST_RANGE_ALGORITHM_REVERSE_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 reverse
  25 ///
  26 /// range-based version of the reverse std algorithm
  27 ///
  28 /// \pre BidirectionalRange is a model of the BidirectionalRangeConcept
  29 template<class BidirectionalRange>
  30 inline BidirectionalRange& reverse(BidirectionalRange& rng)
  31 {
  32     BOOST_RANGE_CONCEPT_ASSERT(( BidirectionalRangeConcept<BidirectionalRange> ));
  33     std::reverse(boost::begin(rng), boost::end(rng));
  34     return rng;
  35 }
  36
  37 /// \overload
  38 template<class BidirectionalRange>
  39 inline const BidirectionalRange& reverse(const BidirectionalRange& rng)
  40 {
  41     BOOST_RANGE_CONCEPT_ASSERT(( BidirectionalRangeConcept<const BidirectionalRange> ));
  42     std::reverse(boost::begin(rng), boost::end(rng));
  43     return rng;
  44 }
  45
  46     } // namespace range
  47     using range::reverse;
  48 } // namespace boost
  49
  50 #endif // include guard