DGtal  1.3.beta
OpInSTLContainers.h
1 
17 #pragma once
18 
35 #if defined(OpInSTLContainers_RECURSES)
36 #error Recursive header files inclusion detected in OpInSTLContainers.h
37 #else // defined(OpInSTLContainers_RECURSES)
38 
39 #define OpInSTLContainers_RECURSES
40 
41 #if !defined OpInSTLContainers_h
42 
43 #define OpInSTLContainers_h
44 
46 // Inclusions
47 #include <list>
49 
50 namespace DGtal
51 {
52 
54 // generic classes for operations in STL containers
55 // that cannot be performed with a reverse_iterator type
56 
58 
76  //default (iterator type)
77  template <typename Container, typename Iterator>
79  {
80  static Iterator erase(Container& aContainer,Iterator& anIterator)
81  {
82  return aContainer.erase(anIterator);
83  }
84 
85  static Iterator insert(Container& aContainer,Iterator& anIterator)
86  {
87  return aContainer.insert(anIterator);
88  }
89 
90  };
91 
92  //specialisation for reverse_iterator type
93  template <typename Container>
95  Container,
96  std::reverse_iterator<typename Container::iterator> >
97  {
98  typedef typename Container::iterator Iterator;
99  typedef std::reverse_iterator<typename Container::iterator> ReverseIterator;
100 
102  Container& aContainer,
103  ReverseIterator& anIterator)
104  {
105  //base iterator pointing to the same element
106  Iterator base = (++anIterator).base();
107  //base iterator pointing to the element that
108  //followed the erased element
109  base = aContainer.erase(base);
110  //reverse iterator pointing to the element that
111  //preceded the erased element
112  return ReverseIterator(base);
113  }
114 
116  Container& aContainer,
117  ReverseIterator& anIterator,
118  const typename Container::value_type& aValue)
119  {
120  Iterator base = aContainer.insert(anIterator.base(), aValue);
121  return ReverseIterator(base);
122  }
123  };
124 
125 } // namespace DGtal
126 
127 // //
129 
130 #endif // !defined OpInSTLContainers_h
131 
132 #undef OpInSTLContainers_RECURSES
133 #endif // else defined(OpInSTLContainers_RECURSES)
DGtal::OpInSTLContainers< Container, std::reverse_iterator< typename Container::iterator > >::insert
static ReverseIterator insert(Container &aContainer, ReverseIterator &anIterator, const typename Container::value_type &aValue)
Definition: OpInSTLContainers.h:115
DGtal::OpInSTLContainers::erase
static Iterator erase(Container &aContainer, Iterator &anIterator)
Definition: OpInSTLContainers.h:80
DGtal
DGtal is the top-level namespace which contains all DGtal functions and types.
DGtal::OpInSTLContainers< Container, std::reverse_iterator< typename Container::iterator > >::Iterator
Container::iterator Iterator
Definition: OpInSTLContainers.h:98
DGtal::OpInSTLContainers< Container, std::reverse_iterator< typename Container::iterator > >::ReverseIterator
std::reverse_iterator< typename Container::iterator > ReverseIterator
Definition: OpInSTLContainers.h:99
DGtal::OpInSTLContainers::insert
static Iterator insert(Container &aContainer, Iterator &anIterator)
Definition: OpInSTLContainers.h:85
DGtal::OpInSTLContainers
Definition: OpInSTLContainers.h:78
DGtal::OpInSTLContainers< Container, std::reverse_iterator< typename Container::iterator > >::erase
static ReverseIterator erase(Container &aContainer, ReverseIterator &anIterator)
Definition: OpInSTLContainers.h:101