1 | ////////////////////////////////////////////////////////////////////////////// |
2 | // |
3 | // (C) Copyright Ion Gaztanaga 2012-2013. Distributed under the Boost |
4 | // Software License, Version 1.0. (See accompanying file |
5 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
6 | // |
7 | // See http://www.boost.org/libs/container for documentation. |
8 | // |
9 | ////////////////////////////////////////////////////////////////////////////// |
10 | |
11 | #ifndef BOOST_CONTAINER_TEST_FORWARD_TO_INPUT_ITERATOR_HPP |
12 | #define BOOST_CONTAINER_TEST_FORWARD_TO_INPUT_ITERATOR_HPP |
13 | |
14 | #include <boost/container/detail/iterator.hpp> |
15 | |
16 | namespace boost{ |
17 | namespace container { |
18 | namespace test{ |
19 | |
20 | template<class FwdIterator> |
21 | class input_iterator_wrapper |
22 | : public boost::container::iterator< std::input_iterator_tag |
23 | , typename boost::container::iterator_traits<FwdIterator>::value_type |
24 | , typename boost::container::iterator_traits<FwdIterator>::difference_type |
25 | , typename boost::container::iterator_traits<FwdIterator>::pointer |
26 | , typename boost::container::iterator_traits<FwdIterator>::reference |
27 | > |
28 | { |
29 | FwdIterator m_it; |
30 | |
31 | public: |
32 | input_iterator_wrapper() |
33 | : m_it(0) |
34 | {} |
35 | |
36 | explicit input_iterator_wrapper(FwdIterator it) |
37 | : m_it(it) |
38 | {} |
39 | |
40 | //Default copy constructor... |
41 | //input_iterator_wrapper(const input_iterator_wrapper&); |
42 | |
43 | //Default assignment... |
44 | //input_iterator_wrapper &operator=(const input_iterator_wrapper&); |
45 | |
46 | //Default destructor... |
47 | //~input_iterator_wrapper(); |
48 | |
49 | typename boost::container::iterator_traits<FwdIterator>::reference operator*() const |
50 | { return *m_it; } |
51 | |
52 | typename boost::container::iterator_traits<FwdIterator>::pointer operator->() const |
53 | { return m_it.operator->(); } |
54 | |
55 | input_iterator_wrapper& operator++() |
56 | { ++m_it; return *this; } |
57 | |
58 | input_iterator_wrapper operator++(int ) |
59 | { |
60 | input_iterator_wrapper tmp(m_it); |
61 | ++m_it; |
62 | return tmp; |
63 | } |
64 | |
65 | friend bool operator==(const input_iterator_wrapper &left, const input_iterator_wrapper &right) |
66 | { return left.m_it == right.m_it; } |
67 | |
68 | friend bool operator!=(const input_iterator_wrapper &left, const input_iterator_wrapper &right) |
69 | { return left.m_it != right.m_it; } |
70 | }; |
71 | |
72 | template<class FwdIterator> |
73 | input_iterator_wrapper<FwdIterator> make_input_from_forward_iterator(const FwdIterator &it) |
74 | { return input_iterator_wrapper<FwdIterator>(it); } |
75 | |
76 | } //namespace test{ |
77 | } //namespace container { |
78 | } //namespace boost{ |
79 | |
80 | #endif //BOOST_CONTAINER_TEST_FORWARD_TO_INPUT_ITERATOR_HPP |
81 | |