Merge commit '4ebe6417a5fce5f0994fc0c31bebf732be96a07c' as 'boost'

boost/libs/iterator/test/is_lvalue_iterator.cpp

@@ -0,0 +1,141 @@
+// 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/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();
+};
+
+
+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);
+};
+
+
+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;
+}