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// 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 <boost/static_assert.hpp>
#include <boost/noncopyable.hpp>
#include <boost/type_traits/broken_compiler_spec.hpp>
#include <boost/iterator/is_lvalue_iterator.hpp>
#include <boost/iterator.hpp>
// Last, for BOOST_NO_LVALUE_RETURN_DETECTION
#include <boost/iterator/detail/config_def.hpp>
struct v
{
v();
~v();
};
BOOST_TT_BROKEN_COMPILER_SPEC(v)
struct value_iterator : boost::iterator<std::input_iterator_tag,v>
{
v operator*() const;
};
struct noncopyable_iterator : boost::iterator<std::forward_iterator_tag,boost::noncopyable>
{
boost::noncopyable const& operator*() const;
};
template <class T>
struct proxy_iterator
: boost::iterator<std::output_iterator_tag,T>
{
typedef T value_type;
#if BOOST_WORKAROUND(__GNUC__, == 2)
typedef boost::iterator<std::input_iterator_tag,value_type> base;
typedef base::iterator_category iterator_category;
typedef base::difference_type difference_type;
typedef base::pointer pointer;
typedef base::reference reference;
#endif
struct proxy
{
operator value_type&() const;
proxy& operator=(value_type) const;
};
proxy operator*() const;
};
template <class T>
struct lvalue_iterator
{
typedef T value_type;
typedef T& reference;
typedef T difference_type;
typedef std::input_iterator_tag iterator_category;
typedef T* pointer;
T& operator*() const;
lvalue_iterator& operator++();
lvalue_iterator operator++(int);
};
template <class T>
struct constant_lvalue_iterator
{
typedef T value_type;
typedef T const& reference;
typedef T difference_type;
typedef std::input_iterator_tag iterator_category;
typedef T const* pointer;
T const& operator*() const;
constant_lvalue_iterator& operator++();
constant_lvalue_iterator operator++(int);
};
BOOST_TT_BROKEN_COMPILER_SPEC(proxy_iterator<v>::proxy)
BOOST_TT_BROKEN_COMPILER_SPEC(proxy_iterator<int>::proxy)
int main()
{
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<v*>::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<v const*>::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<std::deque<v>::iterator>::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<std::deque<v>::const_iterator>::value);
BOOST_STATIC_ASSERT(!boost::is_lvalue_iterator<std::back_insert_iterator<std::deque<v> > >::value);
BOOST_STATIC_ASSERT(!boost::is_lvalue_iterator<std::ostream_iterator<v> >::value);
BOOST_STATIC_ASSERT(!boost::is_lvalue_iterator<proxy_iterator<v> >::value);
BOOST_STATIC_ASSERT(!boost::is_lvalue_iterator<proxy_iterator<int> >::value);
#ifndef BOOST_NO_LVALUE_RETURN_DETECTION
BOOST_STATIC_ASSERT(!boost::is_lvalue_iterator<value_iterator>::value);
#endif
// Make sure inaccessible copy constructor doesn't prevent
// reference binding
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<noncopyable_iterator>::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<lvalue_iterator<v> >::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<lvalue_iterator<int> >::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<lvalue_iterator<char*> >::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<lvalue_iterator<float> >::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<constant_lvalue_iterator<v> >::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<constant_lvalue_iterator<int> >::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<constant_lvalue_iterator<char*> >::value);
BOOST_STATIC_ASSERT(boost::is_lvalue_iterator<constant_lvalue_iterator<float> >::value);
BOOST_STATIC_ASSERT(boost::is_non_const_lvalue_iterator<v*>::value);
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<v const*>::value);
BOOST_STATIC_ASSERT(boost::is_non_const_lvalue_iterator<std::deque<v>::iterator>::value);
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<std::deque<v>::const_iterator>::value);
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<std::back_insert_iterator<std::deque<v> > >::value);
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<std::ostream_iterator<v> >::value);
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<proxy_iterator<v> >::value);
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<proxy_iterator<int> >::value);
#ifndef BOOST_NO_LVALUE_RETURN_DETECTION
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<value_iterator>::value);
#endif
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<noncopyable_iterator>::value);
BOOST_STATIC_ASSERT(boost::is_non_const_lvalue_iterator<lvalue_iterator<v> >::value);
#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
BOOST_STATIC_ASSERT(boost::is_non_const_lvalue_iterator<lvalue_iterator<int> >::value);
#endif
BOOST_STATIC_ASSERT(boost::is_non_const_lvalue_iterator<lvalue_iterator<char*> >::value);
BOOST_STATIC_ASSERT(boost::is_non_const_lvalue_iterator<lvalue_iterator<float> >::value);
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<constant_lvalue_iterator<v> >::value);
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<constant_lvalue_iterator<int> >::value);
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<constant_lvalue_iterator<char*> >::value);
BOOST_STATIC_ASSERT(!boost::is_non_const_lvalue_iterator<constant_lvalue_iterator<float> >::value);
return 0;
}
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