ceph/src/boost/boost/range/counting_range.hpp

   1 //  Copyright Neil Groves 2010. 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_COUNTING_RANGE_HPP_INCLUDED
  10 #define BOOST_RANGE_COUNTING_RANGE_HPP_INCLUDED
  11
  12 #include <boost/config.hpp>
  13 #if BOOST_MSVC >= 1400
  14 #pragma warning(push)
  15 #pragma warning(disable : 4244)
  16 #endif
  17
  18 #include <boost/range/iterator_range_core.hpp>
  19 #include <boost/range/value_type.hpp>
  20 #include <boost/range/iterator.hpp>
  21 #include <boost/iterator/counting_iterator.hpp>
  22
  23 namespace boost
  24 {
  25     template<class Value>
  26     inline iterator_range<counting_iterator<Value> >
  27     counting_range(Value first, Value last)
  28     {
  29         typedef counting_iterator<Value> counting_iterator_t;
  30         typedef iterator_range<counting_iterator_t> result_t;
  31         return result_t(counting_iterator_t(first),
  32                         counting_iterator_t(last));
  33     }
  34
  35     template<class Range>
  36     inline iterator_range<
  37         counting_iterator<
  38             BOOST_DEDUCED_TYPENAME range_iterator<const Range>::type
  39         >
  40     >
  41     counting_range(const Range& rng)
  42     {
  43         typedef counting_iterator<
  44             BOOST_DEDUCED_TYPENAME range_iterator<const Range>::type
  45         > counting_iterator_t;
  46
  47         typedef iterator_range<counting_iterator_t> result_t;
  48
  49         return result_t(counting_iterator_t(boost::begin(rng)),
  50                         counting_iterator_t(boost::end(rng)));
  51     }
  52
  53     template<class Range>
  54     inline iterator_range<
  55         counting_iterator<
  56             BOOST_DEDUCED_TYPENAME range_iterator<Range>::type
  57         >
  58     >
  59     counting_range(Range& rng)
  60     {
  61         typedef counting_iterator<
  62             BOOST_DEDUCED_TYPENAME range_iterator<Range>::type
  63         > counting_iterator_t;
  64
  65         typedef iterator_range<counting_iterator_t> result_t;
  66
  67         return result_t(counting_iterator_t(boost::begin(rng)),
  68                         counting_iterator_t(boost::end(rng)));
  69     }
  70 } // namespace boost
  71
  72 #if BOOST_MSVC >= 1400
  73 #pragma warning(pop)
  74 #endif
  75
  76 #endif // include guard