123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596 |
- // Copyright David Abrahams 2003. Use, modification and distribution is
- // subject to 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 <deque>
- #include <iterator>
- #include <iostream>
- #include <cstddef> // std::ptrdiff_t
- #include <boost/static_assert.hpp>
- #include <boost/noncopyable.hpp>
- #include <boost/iterator/is_readable_iterator.hpp>
- // Last, for BOOST_NO_LVALUE_RETURN_DETECTION
- #include <boost/iterator/detail/config_def.hpp>
- struct v
- {
- v();
- ~v();
- };
- struct value_iterator
- {
- typedef std::input_iterator_tag iterator_category;
- typedef v value_type;
- typedef std::ptrdiff_t difference_type;
- typedef v* pointer;
- typedef v& reference;
- v operator*() const;
- };
- struct noncopyable_iterator
- {
- typedef std::forward_iterator_tag iterator_category;
- typedef boost::noncopyable value_type;
- typedef std::ptrdiff_t difference_type;
- typedef boost::noncopyable* pointer;
- typedef boost::noncopyable& reference;
-
- boost::noncopyable const& operator*() const;
- };
- struct proxy_iterator
- {
- typedef std::output_iterator_tag iterator_category;
- typedef v value_type;
- typedef std::ptrdiff_t difference_type;
- typedef v* pointer;
- typedef v& reference;
-
- struct proxy
- {
- operator v&();
- proxy& operator=(v) const;
- };
-
- proxy operator*() const;
- };
- struct proxy_iterator2
- {
- typedef std::output_iterator_tag iterator_category;
- typedef v value_type;
- typedef std::ptrdiff_t difference_type;
- typedef v* pointer;
- typedef v& reference;
-
- struct proxy
- {
- proxy& operator=(v) const;
- };
-
- proxy operator*() const;
- };
- int main()
- {
- BOOST_STATIC_ASSERT(boost::is_readable_iterator<v*>::value);
- BOOST_STATIC_ASSERT(boost::is_readable_iterator<v const*>::value);
- BOOST_STATIC_ASSERT(boost::is_readable_iterator<std::deque<v>::iterator>::value);
- BOOST_STATIC_ASSERT(boost::is_readable_iterator<std::deque<v>::const_iterator>::value);
- BOOST_STATIC_ASSERT(!boost::is_readable_iterator<std::back_insert_iterator<std::deque<v> > >::value);
- BOOST_STATIC_ASSERT(!boost::is_readable_iterator<std::ostream_iterator<v> >::value);
- BOOST_STATIC_ASSERT(boost::is_readable_iterator<proxy_iterator>::value);
- BOOST_STATIC_ASSERT(!boost::is_readable_iterator<proxy_iterator2>::value);
- BOOST_STATIC_ASSERT(boost::is_readable_iterator<value_iterator>::value);
-
- // Make sure inaccessible copy constructor doesn't prevent
- // readability
- BOOST_STATIC_ASSERT(boost::is_readable_iterator<noncopyable_iterator>::value);
-
- return 0;
- }
|