ceph/src/boost/boost/range/join.hpp

   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 //
   9 // For more information, see http://www.boost.org/libs/range/
  10 //
  11 #ifndef BOOST_RANGE_JOIN_HPP_INCLUDED
  12 #define BOOST_RANGE_JOIN_HPP_INCLUDED
  13
  14 #include <boost/config.hpp>
  15 #include <boost/range/detail/join_iterator.hpp>
  16 #include <boost/range/concepts.hpp>
  17 #include <boost/range/iterator_range.hpp>
  18
  19 namespace boost
  20 {
  21     namespace range_detail
  22     {
  23
  24 template<class SinglePassRange1, class SinglePassRange2>
  25 class joined_type
  26 {
  27 public:
  28     typedef iterator_range<
  29         range_detail::join_iterator<
  30             BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange1>::type,
  31             BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type,
  32             BOOST_DEDUCED_TYPENAME range_value<SinglePassRange1>::type
  33         >
  34     > type;
  35 };
  36
  37     } // namespace range_detail
  38
  39 namespace range
  40 {
  41
  42 template<class SinglePassRange1, class SinglePassRange2>
  43 class joined_range
  44     : public range_detail::joined_type<SinglePassRange1, SinglePassRange2>::type
  45 {
  46     typedef range_detail::join_iterator<
  47         BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange1>::type,
  48         BOOST_DEDUCED_TYPENAME range_iterator<SinglePassRange2>::type,
  49         BOOST_DEDUCED_TYPENAME range_value<SinglePassRange1>::type
  50         > iterator_t;
  51
  52     typedef BOOST_DEDUCED_TYPENAME range_detail::joined_type<
  53                     SinglePassRange1, SinglePassRange2>::type base_t;
  54 public:
  55     joined_range(SinglePassRange1& rng1, SinglePassRange2& rng2)
  56         : base_t(
  57             iterator_t(rng1, rng2, range_detail::join_iterator_begin_tag()),
  58             iterator_t(rng1, rng2, range_detail::join_iterator_end_tag())
  59         )
  60     {
  61     }
  62 };
  63
  64 template<class SinglePassRange1, class SinglePassRange2>
  65 joined_range<const SinglePassRange1, const SinglePassRange2>
  66 join(const SinglePassRange1& r1, const SinglePassRange2& r2)
  67 {
  68     BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange1> ));
  69     BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange2> ));
  70
  71     return joined_range<const SinglePassRange1, const SinglePassRange2>(r1, r2);
  72 }
  73
  74 template<class SinglePassRange1, class SinglePassRange2>
  75 joined_range<SinglePassRange1, SinglePassRange2>
  76 join(SinglePassRange1& r1, SinglePassRange2& r2)
  77 {
  78     BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange1> ));
  79     BOOST_RANGE_CONCEPT_ASSERT(( SinglePassRangeConcept<SinglePassRange2> ));
  80
  81     return joined_range<SinglePassRange1, SinglePassRange2>(r1, r2);
  82 }
  83
  84 } // namespace range
  85
  86 using ::boost::range::joined_range;
  87 using ::boost::range::join;
  88
  89 } // namespace boost
  90
  91 #endif // include guard