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-rw-r--r--cutl/container/map-iterator.hxx68
1 files changed, 0 insertions, 68 deletions
diff --git a/cutl/container/map-iterator.hxx b/cutl/container/map-iterator.hxx
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--- a/cutl/container/map-iterator.hxx
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-// file : cutl/container/map-iterator.hxx
-// license : MIT; see accompanying LICENSE file
-
-#ifndef CUTL_CONTAINER_MAP_ITERATOR_HXX
-#define CUTL_CONTAINER_MAP_ITERATOR_HXX
-
-namespace cutl
-{
- namespace container
- {
- // Map iterator adapter that can be used to implement multi-index
- // containers, as discussed in the following post:
- //
- // http://www.codesynthesis.com/~boris/blog/2012/09/11/emulating-boost-multi-index-with-std-containers/
- //
- template <typename M>
- struct map_iterator: M::iterator
- {
- typedef typename M::iterator base_iterator;
- typedef typename M::value_type::second_type value_type;
- typedef value_type* pointer;
- typedef value_type& reference;
-
- map_iterator () {}
- map_iterator (base_iterator i): base_iterator (i) {}
-
- reference
- operator* () const
- {
- return base_iterator::operator* ().second;
- }
-
- pointer
- operator-> () const
- {
- return &base_iterator::operator-> ()->second;
- }
- };
-
- template <typename M>
- struct map_const_iterator: M::const_iterator
- {
- typedef typename M::iterator base_iterator;
- typedef typename M::const_iterator base_const_iterator;
- typedef const typename M::value_type::second_type value_type;
- typedef value_type* pointer;
- typedef value_type& reference;
-
- map_const_iterator () {}
- map_const_iterator (base_iterator i): base_const_iterator (i) {}
- map_const_iterator (base_const_iterator i): base_const_iterator (i) {}
-
- reference
- operator* () const
- {
- return base_const_iterator::operator* ().second;
- }
-
- pointer
- operator-> () const
- {
- return &base_const_iterator::operator-> ()->second;
- }
- };
- }
-}
-
-#endif // CUTL_CONTAINER_MAP_ITERATOR_HXX