[857] | 1 | // Copyright David Abrahams 2003.
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| 2 | // Distributed under the Boost Software License, Version 1.0. (See
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| 3 | // accompanying file LICENSE_1_0.txt or copy at
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| 4 | // http://www.boost.org/LICENSE_1_0.txt)
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| 5 | #ifndef ITERATOR_TRAITS_DWA200347_HPP
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| 6 | # define ITERATOR_TRAITS_DWA200347_HPP
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| 7 |
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| 8 | # include <boost/detail/iterator.hpp>
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| 9 | # include <boost/detail/workaround.hpp>
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| 10 |
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| 11 | namespace boost {
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| 12 |
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| 13 | // Unfortunately, g++ 2.95.x chokes when we define a class template
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| 14 | // iterator_category which has the same name as its
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| 15 | // std::iterator_category() function, probably due in part to the
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| 16 | // "std:: is visible globally" hack it uses. Use
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| 17 | // BOOST_ITERATOR_CATEGORY to write code that's portable to older
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| 18 | // GCCs.
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| 19 |
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| 20 | # if BOOST_WORKAROUND(__GNUC__, <= 2)
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| 21 | # define BOOST_ITERATOR_CATEGORY iterator_category_
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| 22 | # else
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| 23 | # define BOOST_ITERATOR_CATEGORY iterator_category
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| 24 | # endif
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| 25 |
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| 26 |
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| 27 | template <class Iterator>
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| 28 | struct iterator_value
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| 29 | {
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| 30 | typedef typename detail::iterator_traits<Iterator>::value_type type;
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| 31 | };
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| 32 |
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| 33 | template <class Iterator>
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| 34 | struct iterator_reference
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| 35 | {
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| 36 | typedef typename detail::iterator_traits<Iterator>::reference type;
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| 37 | };
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| 38 |
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| 39 |
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| 40 | template <class Iterator>
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| 41 | struct iterator_pointer
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| 42 | {
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| 43 | typedef typename detail::iterator_traits<Iterator>::pointer type;
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| 44 | };
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| 45 |
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| 46 | template <class Iterator>
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| 47 | struct iterator_difference
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| 48 | {
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| 49 | typedef typename detail::iterator_traits<Iterator>::difference_type type;
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| 50 | };
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| 51 |
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| 52 | template <class Iterator>
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| 53 | struct BOOST_ITERATOR_CATEGORY
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| 54 | {
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| 55 | typedef typename detail::iterator_traits<Iterator>::iterator_category type;
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| 56 | };
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| 57 |
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| 58 | # if BOOST_WORKAROUND(BOOST_MSVC, <= 1200)
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| 59 | template <>
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| 60 | struct iterator_value<int>
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| 61 | {
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| 62 | typedef void type;
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| 63 | };
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| 64 |
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| 65 | template <>
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| 66 | struct iterator_reference<int>
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| 67 | {
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| 68 | typedef void type;
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| 69 | };
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| 70 |
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| 71 | template <>
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| 72 | struct iterator_pointer<int>
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| 73 | {
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| 74 | typedef void type;
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| 75 | };
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| 76 |
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| 77 | template <>
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| 78 | struct iterator_difference<int>
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| 79 | {
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| 80 | typedef void type;
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| 81 | };
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| 82 |
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| 83 | template <>
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| 84 | struct BOOST_ITERATOR_CATEGORY<int>
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| 85 | {
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| 86 | typedef void type;
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| 87 | };
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| 88 | # endif
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| 89 |
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| 90 | } // namespace boost::iterator
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| 91 |
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| 92 | #endif // ITERATOR_TRAITS_DWA200347_HPP
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