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 

    17 template <typename Container>

    18 class shared_container_iterator : public iterator_adaptor<

    19                                     shared_container_iterator<Container>,

    20                                     typename Container::iterator> {

    21 

    22   typedef iterator_adaptor<

    23     shared_container_iterator<Container>,

    24     typename Container::iterator> super_t;

    25 

    26   typedef typename Container::iterator iterator_t;

    27   typedef boost::shared_ptr<Container> container_ref_t;

    28 

    29   container_ref_t container_ref;

    30 public:

    31   shared_container_iterator() { }

    32 

    33   shared_container_iterator(iterator_t const& x,container_ref_t const& c) :

    34     super_t(x), container_ref(c) { }

    35 

    36 

    37 };

    38 

    39 template <typename Container>

    40 shared_container_iterator<Container>

    41 make_shared_container_iterator(typename Container::iterator iter,

    42                                boost::shared_ptr<Container> const& container) {

    43   typedef shared_container_iterator<Container> iterator;

    44   return iterator(iter,container);

    45 }

    46 

    47 

    48 

    49 template <typename Container>

    50 std::pair<

    51   shared_container_iterator<Container>,

    52   shared_container_iterator<Container> >

    53 make_shared_container_range(boost::shared_ptr<Container> const& container) {

    54   return

    55     std::make_pair(

    56       make_shared_container_iterator(container->begin(),container),

    57       make_shared_container_iterator(container->end(),container));

    58 }

    59 

    60 

    61 } // namespace boost

    62 #endif  // SHARED_CONTAINER_ITERATOR_RG08102002_HPP