93 lines
2.1 KiB
C++
93 lines
2.1 KiB
C++
// Copyright David Abrahams 2003.
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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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#ifndef ITERATOR_TRAITS_DWA200347_HPP
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# define ITERATOR_TRAITS_DWA200347_HPP
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# include <boost/detail/iterator.hpp>
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# include <boost/detail/workaround.hpp>
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namespace boost {
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// Unfortunately, g++ 2.95.x chokes when we define a class template
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// iterator_category which has the same name as its
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// std::iterator_category() function, probably due in part to the
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// "std:: is visible globally" hack it uses. Use
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// BOOST_ITERATOR_CATEGORY to write code that's portable to older
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// GCCs.
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# if BOOST_WORKAROUND(__GNUC__, <= 2)
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# define BOOST_ITERATOR_CATEGORY iterator_category_
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# else
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# define BOOST_ITERATOR_CATEGORY iterator_category
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# endif
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template <class Iterator>
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struct iterator_value
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{
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typedef typename boost::detail::iterator_traits<Iterator>::value_type type;
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};
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template <class Iterator>
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struct iterator_reference
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{
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typedef typename boost::detail::iterator_traits<Iterator>::reference type;
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};
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template <class Iterator>
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struct iterator_pointer
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{
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typedef typename boost::detail::iterator_traits<Iterator>::pointer type;
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};
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template <class Iterator>
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struct iterator_difference
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{
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typedef typename boost::detail::iterator_traits<Iterator>::difference_type type;
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};
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template <class Iterator>
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struct BOOST_ITERATOR_CATEGORY
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{
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typedef typename boost::detail::iterator_traits<Iterator>::iterator_category type;
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};
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# if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
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template <>
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struct iterator_value<int>
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{
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typedef void type;
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};
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template <>
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struct iterator_reference<int>
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{
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typedef void type;
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};
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template <>
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struct iterator_pointer<int>
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{
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typedef void type;
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};
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template <>
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struct iterator_difference<int>
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{
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typedef void type;
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};
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template <>
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struct BOOST_ITERATOR_CATEGORY<int>
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{
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typedef void type;
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};
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# endif
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} // namespace boost::iterator
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#endif // ITERATOR_TRAITS_DWA200347_HPP
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