source: src/Descriptors/SelectiveConstIterator.hpp@ 814b8c

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Last change on this file since 814b8c was feb5d0, checked in by Frederik Heber <heber@…>, 13 years ago

Added SelectiveConstIterator, allows for constant iteration over Descriptor-constraint ranges.
  • Property mode set to 100644
File size: 1.8 KB
Line 
1/*
2 * SelectiveConstIterator.hpp
3 *
4 * Created on: Mar 19, 2013
5 * Author: heber
6 */
7
8#ifndef SELECTIVECONSTITERATOR_HPP_
9#define SELECTIVECONSTITERATOR_HPP_
10
11// include config.h
12#ifdef HAVE_CONFIG_H
13#include <config.h>
14#endif
15
16
17#include <iterator>
18
19template<class _Target,
20 class _Container,
21 class _Descriptor>
22class SelectiveConstIterator :
23 public std::iterator<typename std::iterator_traits<typename _Container::const_iterator>::difference_type,
24 typename std::iterator_traits<typename _Container::const_iterator>::value_type,
25 typename std::iterator_traits<typename _Container::const_iterator>::pointer,
26 typename std::iterator_traits<typename _Container::const_iterator>::reference>
27{
28public:
29 typedef typename _Container::const_iterator Iter;
30 typedef _Target Target;
31 typedef typename Iter::value_type value_type;
32 typedef typename Iter::difference_type difference_type;
33 typedef typename Iter::pointer pointer;
34 typedef typename Iter::reference reference;
35 typedef typename Iter::iterator_category iterator_category;
36
37
38 SelectiveConstIterator(_Descriptor, const _Container&);
39 SelectiveConstIterator(_Descriptor, const _Container&, Iter);
40 SelectiveConstIterator(const SelectiveConstIterator&);
41 SelectiveConstIterator& operator=(const SelectiveConstIterator&);
42 SelectiveConstIterator& operator++(); // prefix
43 SelectiveConstIterator operator++(int); // postfix with dummy parameter
44 bool operator==(const SelectiveConstIterator&);
45 bool operator!=(const SelectiveConstIterator&);
46 Target const operator*();
47
48 int getCount();
49protected:
50 void advanceState();
51 Iter state;
52 typename _Descriptor::impl_ptr descr;
53 int index;
54
55 const _Container &content;
56};
57
58#endif /* SELECTIVECONSTITERATOR_HPP_ */
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