ceph/src/boost/libs/range/include/boost/range/adaptor/copied.hpp

   1 // Boost.Range library
   2 //
   3 //  Copyright Thorsten Ottosen, Neil Groves 2006. 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
  11 #ifndef BOOST_RANGE_ADAPTOR_COPIED_HPP
  12 #define BOOST_RANGE_ADAPTOR_COPIED_HPP
  13
  14 #include <boost/range/adaptor/argument_fwd.hpp>
  15 #include <boost/range/adaptor/sliced.hpp>
  16 #include <boost/range/size_type.hpp>
  17 #include <boost/range/iterator_range.hpp>
  18 #include <boost/range/concepts.hpp>
  19
  20 namespace boost
  21 {
  22     namespace adaptors
  23     {
  24         struct copied
  25         {
  26             copied(std::size_t t_, std::size_t u_)
  27                 : t(t_), u(u_) {}
  28
  29             std::size_t t;
  30             std::size_t u;
  31         };
  32
  33         template<class CopyableRandomAccessRange>
  34         inline CopyableRandomAccessRange
  35         operator|(const CopyableRandomAccessRange& r, const copied& f)
  36         {
  37             BOOST_RANGE_CONCEPT_ASSERT((
  38                 RandomAccessRangeConcept<const CopyableRandomAccessRange>));
  39
  40             iterator_range<
  41                 BOOST_DEDUCED_TYPENAME range_iterator<
  42                     const CopyableRandomAccessRange
  43                 >::type
  44             > temp(adaptors::slice(r, f.t, f.u));
  45
  46             return CopyableRandomAccessRange(temp.begin(), temp.end());
  47         }
  48
  49         template<class CopyableRandomAccessRange>
  50         inline CopyableRandomAccessRange
  51         copy(const CopyableRandomAccessRange& rng, std::size_t t, std::size_t u)
  52         {
  53             BOOST_RANGE_CONCEPT_ASSERT((
  54                 RandomAccessRangeConcept<const CopyableRandomAccessRange>));
  55
  56             iterator_range<
  57                 BOOST_DEDUCED_TYPENAME range_iterator<
  58                     const CopyableRandomAccessRange
  59                 >::type
  60             > temp(adaptors::slice(rng, t, u));
  61
  62             return CopyableRandomAccessRange( temp.begin(), temp.end() );
  63         }
  64     } // 'adaptors'
  65
  66 }
  67
  68 #endif // include guard