[857] | 1 | /*
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| 2 | *
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| 3 | * Copyright (c) 1998-2002
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| 4 | * John Maddock
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| 5 | *
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| 6 | * Use, modification and distribution are subject to the
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| 7 | * Boost Software License, Version 1.0. (See accompanying file
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| 8 | * LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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| 9 | *
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| 10 | */
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| 11 |
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| 12 | /*
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| 13 | * LOCATION: see http://www.boost.org for most recent version.
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| 14 | * FILE iterator_traits.cpp
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| 15 | * VERSION see <boost/version.hpp>
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| 16 | * DESCRIPTION: Declares iterator traits workarounds.
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| 17 | */
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| 18 |
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| 19 | #ifndef BOOST_REGEX_V4_ITERATOR_TRAITS_HPP
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| 20 | #define BOOST_REGEX_V4_ITERATOR_TRAITS_HPP
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| 21 |
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| 22 | #ifdef BOOST_HAS_ABI_HEADERS
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| 23 | # include BOOST_ABI_PREFIX
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| 24 | #endif
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| 25 |
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| 26 | namespace boost{
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| 27 | namespace re_detail{
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| 28 |
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| 29 | #if defined(BOOST_NO_STD_ITERATOR_TRAITS) || defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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| 30 |
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| 31 | template <class T>
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| 32 | struct regex_iterator_traits
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| 33 | {
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| 34 | typedef typename T::iterator_category iterator_category;
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| 35 | typedef typename T::value_type value_type;
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| 36 | #if !defined(BOOST_NO_STD_ITERATOR)
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| 37 | typedef typename T::difference_type difference_type;
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| 38 | typedef typename T::pointer pointer;
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| 39 | typedef typename T::reference reference;
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| 40 | #else
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| 41 | typedef std::ptrdiff_t difference_type;
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| 42 | typedef value_type* pointer;
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| 43 | typedef value_type& reference;
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| 44 | #endif
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| 45 | };
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| 46 |
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| 47 | template <class T>
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| 48 | struct pointer_iterator_traits
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| 49 | {
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| 50 | typedef std::ptrdiff_t difference_type;
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| 51 | typedef T value_type;
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| 52 | typedef T* pointer;
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| 53 | typedef T& reference;
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| 54 | typedef std::random_access_iterator_tag iterator_category;
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| 55 | };
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| 56 | template <class T>
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| 57 | struct const_pointer_iterator_traits
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| 58 | {
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| 59 | typedef std::ptrdiff_t difference_type;
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| 60 | typedef T value_type;
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| 61 | typedef const T* pointer;
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| 62 | typedef const T& reference;
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| 63 | typedef std::random_access_iterator_tag iterator_category;
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| 64 | };
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| 65 |
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| 66 | template<>
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| 67 | struct regex_iterator_traits<char*> : pointer_iterator_traits<char>{};
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| 68 | template<>
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| 69 | struct regex_iterator_traits<const char*> : const_pointer_iterator_traits<char>{};
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| 70 | template<>
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| 71 | struct regex_iterator_traits<wchar_t*> : pointer_iterator_traits<wchar_t>{};
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| 72 | template<>
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| 73 | struct regex_iterator_traits<const wchar_t*> : const_pointer_iterator_traits<wchar_t>{};
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| 74 | //
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| 75 | // the follwoing are needed for ICU support:
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| 76 | //
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| 77 | template<>
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| 78 | struct regex_iterator_traits<unsigned char*> : pointer_iterator_traits<char>{};
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| 79 | template<>
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| 80 | struct regex_iterator_traits<const unsigned char*> : const_pointer_iterator_traits<char>{};
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| 81 | template<>
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| 82 | struct regex_iterator_traits<int*> : pointer_iterator_traits<int>{};
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| 83 | template<>
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| 84 | struct regex_iterator_traits<const int*> : const_pointer_iterator_traits<int>{};
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| 85 |
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| 86 | #ifdef BOOST_REGEX_HAS_OTHER_WCHAR_T
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| 87 | template<>
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| 88 | struct regex_iterator_traits<unsigned short*> : pointer_iterator_traits<unsigned short>{};
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| 89 | template<>
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| 90 | struct regex_iterator_traits<const unsigned short*> : const_pointer_iterator_traits<unsigned short>{};
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| 91 | #endif
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| 92 |
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| 93 | #if defined(__SGI_STL_PORT) && defined(__STL_DEBUG)
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| 94 | template<>
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| 95 | struct regex_iterator_traits<std::string::iterator> : pointer_iterator_traits<char>{};
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| 96 | template<>
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| 97 | struct regex_iterator_traits<std::string::const_iterator> : const_pointer_iterator_traits<char>{};
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| 98 | #ifndef BOOST_NO_STD_WSTRING
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| 99 | template<>
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| 100 | struct regex_iterator_traits<std::wstring::iterator> : pointer_iterator_traits<wchar_t>{};
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| 101 | template<>
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| 102 | struct regex_iterator_traits<std::wstring::const_iterator> : const_pointer_iterator_traits<wchar_t>{};
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| 103 | #endif // BOOST_NO_WSTRING
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| 104 | #endif // stport
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| 105 |
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| 106 | #else
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| 107 |
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| 108 | template <class T>
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| 109 | struct regex_iterator_traits : public std::iterator_traits<T> {};
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| 110 |
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| 111 | #endif
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| 112 |
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| 113 | } // namespace re_detail
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| 114 | } // namespace boost
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| 115 |
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| 116 | #ifdef BOOST_HAS_ABI_HEADERS
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| 117 | # include BOOST_ABI_SUFFIX
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| 118 | #endif
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| 119 |
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| 120 | #endif
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| 121 |
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