ceph/src/boost/libs/range/include/boost/range/algorithm/partition.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_PARTITION__HPP_INCLUDED
  10 #define BOOST_RANGE_ALGORITHM_PARTITION__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 partition
  25 ///
  26 /// range-based version of the partition std algorithm
  27 ///
  28 /// \pre ForwardRange is a model of the ForwardRangeConcept
  29 template<class ForwardRange, class UnaryPredicate>
  30 inline BOOST_DEDUCED_TYPENAME range_iterator<ForwardRange>::type
  31 partition(ForwardRange& rng, UnaryPredicate pred)
  32 {
  33     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
  34     return std::partition(boost::begin(rng),boost::end(rng),pred);
  35 }
  36
  37 /// \overload
  38 template<class ForwardRange, class UnaryPredicate>
  39 inline BOOST_DEDUCED_TYPENAME range_iterator<ForwardRange>::type
  40 partition(const ForwardRange& rng, UnaryPredicate pred)
  41 {
  42     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
  43     return std::partition(boost::begin(rng),boost::end(rng),pred);
  44 }
  45
  46 // range_return overloads
  47
  48 /// \overload
  49 template< range_return_value re, class ForwardRange,
  50           class UnaryPredicate >
  51 inline BOOST_DEDUCED_TYPENAME range_return<ForwardRange,re>::type
  52 partition(ForwardRange& rng, UnaryPredicate pred)
  53 {
  54     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> ));
  55     return boost::range_return<ForwardRange,re>::
  56         pack(std::partition(boost::begin(rng), boost::end(rng), pred), rng);
  57 }
  58
  59 /// \overload
  60 template< range_return_value re, class ForwardRange,
  61           class UnaryPredicate >
  62 inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange,re>::type
  63 partition(const ForwardRange& rng, UnaryPredicate pred)
  64 {
  65     BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> ));
  66     return boost::range_return<const ForwardRange,re>::
  67         pack(std::partition(boost::begin(rng), boost::end(rng), pred), rng);
  68 }
  69
  70     } // namespace range
  71     using range::partition;
  72 } // namespace boost
  73
  74 #endif // include guard