williamr@2: // Copyright David Abrahams 2003.
williamr@2: // Distributed under the Boost Software License, Version 1.0. (See
williamr@2: // accompanying file LICENSE_1_0.txt or copy at
williamr@2: // http://www.boost.org/LICENSE_1_0.txt)
williamr@2: #ifndef ITERATOR_TRAITS_DWA200347_HPP
williamr@2: # define ITERATOR_TRAITS_DWA200347_HPP
williamr@2: 
williamr@2: # include <boost/detail/iterator.hpp>
williamr@2: # include <boost/detail/workaround.hpp>
williamr@2: 
williamr@2: namespace boost { 
williamr@2: 
williamr@2: // Unfortunately, g++ 2.95.x chokes when we define a class template
williamr@2: // iterator_category which has the same name as its
williamr@2: // std::iterator_category() function, probably due in part to the
williamr@2: // "std:: is visible globally" hack it uses.  Use
williamr@2: // BOOST_ITERATOR_CATEGORY to write code that's portable to older
williamr@2: // GCCs.
williamr@2: 
williamr@2: # if BOOST_WORKAROUND(__GNUC__, <= 2)
williamr@2: #  define BOOST_ITERATOR_CATEGORY iterator_category_
williamr@2: # else
williamr@2: #  define BOOST_ITERATOR_CATEGORY iterator_category
williamr@2: # endif
williamr@2: 
williamr@2: 
williamr@2: template <class Iterator>
williamr@2: struct iterator_value
williamr@2: {
williamr@2:     typedef typename detail::iterator_traits<Iterator>::value_type type;
williamr@2: };
williamr@2:   
williamr@2: template <class Iterator>
williamr@2: struct iterator_reference
williamr@2: {
williamr@2:     typedef typename detail::iterator_traits<Iterator>::reference type;
williamr@2: };
williamr@2:   
williamr@2:   
williamr@2: template <class Iterator>
williamr@2: struct iterator_pointer
williamr@2: {
williamr@2:     typedef typename detail::iterator_traits<Iterator>::pointer type;
williamr@2: };
williamr@2:   
williamr@2: template <class Iterator>
williamr@2: struct iterator_difference
williamr@2: {
williamr@2:     typedef typename detail::iterator_traits<Iterator>::difference_type type;
williamr@2: };
williamr@2: 
williamr@2: template <class Iterator>
williamr@2: struct BOOST_ITERATOR_CATEGORY
williamr@2: {
williamr@2:     typedef typename detail::iterator_traits<Iterator>::iterator_category type;
williamr@2: };
williamr@2: 
williamr@2: # if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
williamr@2: template <>
williamr@2: struct iterator_value<int>
williamr@2: {
williamr@2:     typedef void type;
williamr@2: };
williamr@2:   
williamr@2: template <>
williamr@2: struct iterator_reference<int>
williamr@2: {
williamr@2:     typedef void type;
williamr@2: };
williamr@2: 
williamr@2: template <>
williamr@2: struct iterator_pointer<int>
williamr@2: {
williamr@2:     typedef void type;
williamr@2: };
williamr@2:   
williamr@2: template <>
williamr@2: struct iterator_difference<int>
williamr@2: {
williamr@2:     typedef void type;
williamr@2: };
williamr@2:   
williamr@2: template <>
williamr@2: struct BOOST_ITERATOR_CATEGORY<int>
williamr@2: {
williamr@2:     typedef void type;
williamr@2: };
williamr@2: # endif
williamr@2: 
williamr@2: } // namespace boost::iterator
williamr@2: 
williamr@2: #endif // ITERATOR_TRAITS_DWA200347_HPP