136 lines
3.7 KiB
C++
136 lines
3.7 KiB
C++
/*
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*
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* Copyright (c) 1998-2002
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* John Maddock
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*
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* Use, modification and distribution are subject to the
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* Boost Software License, Version 1.0. (See accompanying file
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* LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*
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*/
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/*
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* LOCATION: see http://www.boost.org for most recent version.
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* FILE iterator_traits.cpp
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* VERSION see <boost/version.hpp>
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* DESCRIPTION: Declares iterator traits workarounds.
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*/
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#ifndef BOOST_REGEX_V4_ITERATOR_TRAITS_HPP
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#define BOOST_REGEX_V4_ITERATOR_TRAITS_HPP
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#ifdef BOOST_MSVC
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#pragma warning(push)
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#pragma warning(disable: 4103)
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#endif
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_PREFIX
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#endif
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#ifdef BOOST_MSVC
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#pragma warning(pop)
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#endif
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namespace boost{
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namespace re_detail{
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#if defined(BOOST_NO_STD_ITERATOR_TRAITS) || defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
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template <class T>
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struct regex_iterator_traits
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{
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typedef typename T::iterator_category iterator_category;
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typedef typename T::value_type value_type;
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#if !defined(BOOST_NO_STD_ITERATOR)
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typedef typename T::difference_type difference_type;
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typedef typename T::pointer pointer;
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typedef typename T::reference reference;
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#else
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typedef std::ptrdiff_t difference_type;
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typedef value_type* pointer;
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typedef value_type& reference;
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#endif
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};
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template <class T>
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struct pointer_iterator_traits
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{
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typedef std::ptrdiff_t difference_type;
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typedef T value_type;
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typedef T* pointer;
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typedef T& reference;
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typedef std::random_access_iterator_tag iterator_category;
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};
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template <class T>
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struct const_pointer_iterator_traits
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{
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typedef std::ptrdiff_t difference_type;
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typedef T value_type;
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typedef const T* pointer;
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typedef const T& reference;
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typedef std::random_access_iterator_tag iterator_category;
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};
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template<>
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struct regex_iterator_traits<char*> : pointer_iterator_traits<char>{};
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template<>
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struct regex_iterator_traits<const char*> : const_pointer_iterator_traits<char>{};
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template<>
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struct regex_iterator_traits<wchar_t*> : pointer_iterator_traits<wchar_t>{};
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template<>
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struct regex_iterator_traits<const wchar_t*> : const_pointer_iterator_traits<wchar_t>{};
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//
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// the follwoing are needed for ICU support:
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//
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template<>
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struct regex_iterator_traits<unsigned char*> : pointer_iterator_traits<char>{};
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template<>
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struct regex_iterator_traits<const unsigned char*> : const_pointer_iterator_traits<char>{};
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template<>
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struct regex_iterator_traits<int*> : pointer_iterator_traits<int>{};
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template<>
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struct regex_iterator_traits<const int*> : const_pointer_iterator_traits<int>{};
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#ifdef BOOST_REGEX_HAS_OTHER_WCHAR_T
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template<>
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struct regex_iterator_traits<unsigned short*> : pointer_iterator_traits<unsigned short>{};
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template<>
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struct regex_iterator_traits<const unsigned short*> : const_pointer_iterator_traits<unsigned short>{};
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#endif
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#if defined(__SGI_STL_PORT) && defined(__STL_DEBUG)
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template<>
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struct regex_iterator_traits<std::string::iterator> : pointer_iterator_traits<char>{};
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template<>
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struct regex_iterator_traits<std::string::const_iterator> : const_pointer_iterator_traits<char>{};
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#ifndef BOOST_NO_STD_WSTRING
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template<>
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struct regex_iterator_traits<std::wstring::iterator> : pointer_iterator_traits<wchar_t>{};
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template<>
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struct regex_iterator_traits<std::wstring::const_iterator> : const_pointer_iterator_traits<wchar_t>{};
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#endif // BOOST_NO_WSTRING
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#endif // stport
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#else
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template <class T>
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struct regex_iterator_traits : public std::iterator_traits<T> {};
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#endif
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} // namespace re_detail
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} // namespace boost
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#ifdef BOOST_MSVC
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#pragma warning(push)
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#pragma warning(disable: 4103)
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#endif
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_SUFFIX
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#endif
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#ifdef BOOST_MSVC
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#pragma warning(pop)
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#endif
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#endif
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