ceph/src/boost/boost/shared_container_iterator.hpp

   1 // (C) Copyright Ronald Garcia 2002. Permission to copy, use, modify, sell and
   2 // distribute this software is granted provided this copyright notice appears
   3 // in all copies. This software is provided "as is" without express or implied
   4 // warranty, and with no claim as to its suitability for any purpose.
   5
   6 // See http://www.boost.org/libs/utility/shared_container_iterator.html for documentation.
   7
   8 #ifndef SHARED_CONTAINER_ITERATOR_RG08102002_HPP
   9 #define SHARED_CONTAINER_ITERATOR_RG08102002_HPP
  10
  11 #include "boost/iterator_adaptors.hpp"
  12 #include "boost/shared_ptr.hpp"
  13 #include <utility>
  14
  15 namespace boost {
  16 namespace iterators {
  17
  18 template <typename Container>
  19 class shared_container_iterator : public iterator_adaptor<
  20                                     shared_container_iterator<Container>,
  21                                     typename Container::iterator> {
  22
  23   typedef iterator_adaptor<
  24     shared_container_iterator<Container>,
  25     typename Container::iterator> super_t;
  26
  27   typedef typename Container::iterator iterator_t;
  28   typedef boost::shared_ptr<Container> container_ref_t;
  29
  30   container_ref_t container_ref;
  31 public:
  32   shared_container_iterator() { }
  33
  34   shared_container_iterator(iterator_t const& x,container_ref_t const& c) :
  35     super_t(x), container_ref(c) { }
  36
  37
  38 };
  39
  40 template <typename Container>
  41 inline shared_container_iterator<Container>
  42 make_shared_container_iterator(typename Container::iterator iter,
  43                                boost::shared_ptr<Container> const& container) {
  44   typedef shared_container_iterator<Container> iterator;
  45   return iterator(iter,container);
  46 }
  47
  48
  49
  50 template <typename Container>
  51 inline std::pair<
  52   shared_container_iterator<Container>,
  53   shared_container_iterator<Container> >
  54 make_shared_container_range(boost::shared_ptr<Container> const& container) {
  55   return
  56     std::make_pair(
  57       make_shared_container_iterator(container->begin(),container),
  58       make_shared_container_iterator(container->end(),container));
  59 }
  60
  61 } // namespace iterators
  62
  63 using iterators::shared_container_iterator;
  64 using iterators::make_shared_container_iterator;
  65 using iterators::make_shared_container_range;
  66
  67 } // namespace boost
  68
  69 #endif  // SHARED_CONTAINER_ITERATOR_RG08102002_HPP