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A comment in boost/iterator.hpp and boost/detail/iterator.hpp mentions that the files are obsolete and will be deprecated. All they do is pull some types from namespace std into namespace boost.
98 lines
3.5 KiB
C++
98 lines
3.5 KiB
C++
// (C) Copyright Jeremy Siek 2002.
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/iterator/iterator_concepts.hpp>
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#include <boost/iterator/iterator_categories.hpp>
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#include <boost/operators.hpp>
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#include <iterator>
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#include <cstddef>
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struct new_random_access
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: std::random_access_iterator_tag
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, boost::random_access_traversal_tag
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{};
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struct new_iterator
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: public std::iterator< new_random_access, int >
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{
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int& operator*() const { return *m_x; }
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new_iterator& operator++() { return *this; }
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new_iterator operator++(int) { return *this; }
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new_iterator& operator--() { return *this; }
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new_iterator operator--(int) { return *this; }
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new_iterator& operator+=(std::ptrdiff_t) { return *this; }
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new_iterator operator+(std::ptrdiff_t) { return *this; }
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new_iterator& operator-=(std::ptrdiff_t) { return *this; }
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std::ptrdiff_t operator-(const new_iterator&) const { return 0; }
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new_iterator operator-(std::ptrdiff_t) const { return *this; }
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bool operator==(const new_iterator&) const { return false; }
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bool operator!=(const new_iterator&) const { return false; }
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bool operator<(const new_iterator&) const { return false; }
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int* m_x;
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};
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new_iterator operator+(std::ptrdiff_t, new_iterator x) { return x; }
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struct old_iterator
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: public std::iterator<std::random_access_iterator_tag, int>
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{
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int& operator*() const { return *m_x; }
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old_iterator& operator++() { return *this; }
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old_iterator operator++(int) { return *this; }
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old_iterator& operator--() { return *this; }
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old_iterator operator--(int) { return *this; }
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old_iterator& operator+=(std::ptrdiff_t) { return *this; }
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old_iterator operator+(std::ptrdiff_t) { return *this; }
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old_iterator& operator-=(std::ptrdiff_t) { return *this; }
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old_iterator operator-(std::ptrdiff_t) const { return *this; }
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std::ptrdiff_t operator-(const old_iterator&) const { return 0; }
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bool operator==(const old_iterator&) const { return false; }
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bool operator!=(const old_iterator&) const { return false; }
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bool operator<(const old_iterator&) const { return false; }
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int* m_x;
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};
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old_iterator operator+(std::ptrdiff_t, old_iterator x) { return x; }
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int
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main()
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{
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boost::iterator_traversal<new_iterator>::type tc;
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boost::random_access_traversal_tag derived = tc;
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(void)derived;
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boost::function_requires<
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boost_concepts::WritableIteratorConcept<int*> >();
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boost::function_requires<
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boost_concepts::LvalueIteratorConcept<int*> >();
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boost::function_requires<
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boost_concepts::RandomAccessTraversalConcept<int*> >();
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boost::function_requires<
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boost_concepts::ReadableIteratorConcept<const int*> >();
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boost::function_requires<
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boost_concepts::LvalueIteratorConcept<const int*> >();
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boost::function_requires<
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boost_concepts::RandomAccessTraversalConcept<const int*> >();
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boost::function_requires<
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boost_concepts::WritableIteratorConcept<new_iterator> >();
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boost::function_requires<
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boost_concepts::LvalueIteratorConcept<new_iterator> >();
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boost::function_requires<
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boost_concepts::RandomAccessTraversalConcept<new_iterator> >();
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boost::function_requires<
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boost_concepts::WritableIteratorConcept<old_iterator> >();
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boost::function_requires<
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boost_concepts::LvalueIteratorConcept<old_iterator> >();
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boost::function_requires<
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boost_concepts::RandomAccessTraversalConcept<old_iterator> >();
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boost::function_requires<
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boost_concepts::InteroperableIteratorConcept<int*, int const*> >();
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return 0;
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}
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