| // (C) Copyright Jeremy Siek 2002. |
| // Distributed under the Boost Software License, Version 1.0. (See |
| // accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| |
| #include <boost/iterator/iterator_concepts.hpp> |
| #include <boost/iterator/iterator_categories.hpp> |
| #include <boost/operators.hpp> |
| |
| struct new_random_access |
| : std::random_access_iterator_tag |
| , boost::random_access_traversal_tag |
| {}; |
| |
| struct new_iterator |
| : public boost::iterator< new_random_access, int > |
| { |
| int& operator*() const { return *m_x; } |
| new_iterator& operator++() { return *this; } |
| new_iterator operator++(int) { return *this; } |
| new_iterator& operator--() { return *this; } |
| new_iterator operator--(int) { return *this; } |
| new_iterator& operator+=(std::ptrdiff_t) { return *this; } |
| new_iterator operator+(std::ptrdiff_t) { return *this; } |
| new_iterator& operator-=(std::ptrdiff_t) { return *this; } |
| std::ptrdiff_t operator-(const new_iterator&) const { return 0; } |
| new_iterator operator-(std::ptrdiff_t) const { return *this; } |
| bool operator==(const new_iterator&) const { return false; } |
| bool operator!=(const new_iterator&) const { return false; } |
| bool operator<(const new_iterator&) const { return false; } |
| int* m_x; |
| }; |
| new_iterator operator+(std::ptrdiff_t, new_iterator x) { return x; } |
| |
| struct old_iterator |
| : public boost::iterator<std::random_access_iterator_tag, int> |
| { |
| int& operator*() const { return *m_x; } |
| old_iterator& operator++() { return *this; } |
| old_iterator operator++(int) { return *this; } |
| old_iterator& operator--() { return *this; } |
| old_iterator operator--(int) { return *this; } |
| old_iterator& operator+=(std::ptrdiff_t) { return *this; } |
| old_iterator operator+(std::ptrdiff_t) { return *this; } |
| old_iterator& operator-=(std::ptrdiff_t) { return *this; } |
| old_iterator operator-(std::ptrdiff_t) const { return *this; } |
| std::ptrdiff_t operator-(const old_iterator&) const { return 0; } |
| bool operator==(const old_iterator&) const { return false; } |
| bool operator!=(const old_iterator&) const { return false; } |
| bool operator<(const old_iterator&) const { return false; } |
| int* m_x; |
| }; |
| old_iterator operator+(std::ptrdiff_t, old_iterator x) { return x; } |
| |
| int |
| main() |
| { |
| boost::iterator_traversal<new_iterator>::type tc; |
| boost::random_access_traversal_tag derived = tc; |
| (void)derived; |
| |
| boost::function_requires< |
| boost_concepts::WritableIteratorConcept<int*> >(); |
| boost::function_requires< |
| boost_concepts::LvalueIteratorConcept<int*> >(); |
| boost::function_requires< |
| boost_concepts::RandomAccessTraversalConcept<int*> >(); |
| |
| boost::function_requires< |
| boost_concepts::ReadableIteratorConcept<const int*> >(); |
| boost::function_requires< |
| boost_concepts::LvalueIteratorConcept<const int*> >(); |
| boost::function_requires< |
| boost_concepts::RandomAccessTraversalConcept<const int*> >(); |
| |
| boost::function_requires< |
| boost_concepts::WritableIteratorConcept<new_iterator> >(); |
| boost::function_requires< |
| boost_concepts::LvalueIteratorConcept<new_iterator> >(); |
| boost::function_requires< |
| boost_concepts::RandomAccessTraversalConcept<new_iterator> >(); |
| |
| boost::function_requires< |
| boost_concepts::WritableIteratorConcept<old_iterator> >(); |
| boost::function_requires< |
| boost_concepts::LvalueIteratorConcept<old_iterator> >(); |
| boost::function_requires< |
| boost_concepts::RandomAccessTraversalConcept<old_iterator> >(); |
| |
| boost::function_requires< |
| boost_concepts::InteroperableIteratorConcept<int*, int const*> >(); |
| |
| return 0; |
| } |