| 1 | // Boost string_algo library find_iterator.hpp header file ---------------------------// |
|---|---|
| 2 | |
| 3 | // Copyright Pavol Droba 2002-2003. |
| 4 | // |
| 5 | // Distributed under the Boost Software License, Version 1.0. |
| 6 | // (See accompanying file LICENSE_1_0.txt or copy at |
| 7 | // http://www.boost.org/LICENSE_1_0.txt) |
| 8 | |
| 9 | // See http://www.boost.org/ for updates, documentation, and revision history. |
| 10 | |
| 11 | #ifndef BOOST_STRING_FIND_ITERATOR_DETAIL_HPP |
| 12 | #define BOOST_STRING_FIND_ITERATOR_DETAIL_HPP |
| 13 | |
| 14 | #include <boost/algorithm/string/config.hpp> |
| 15 | #include <boost/range/iterator_range_core.hpp> |
| 16 | #include <boost/iterator/iterator_facade.hpp> |
| 17 | #include <boost/iterator/iterator_categories.hpp> |
| 18 | #include <boost/function.hpp> |
| 19 | |
| 20 | namespace boost { |
| 21 | namespace algorithm { |
| 22 | namespace detail { |
| 23 | |
| 24 | // find_iterator base -----------------------------------------------// |
| 25 | |
| 26 | // Find iterator base |
| 27 | template<typename IteratorT> |
| 28 | class find_iterator_base |
| 29 | { |
| 30 | protected: |
| 31 | // typedefs |
| 32 | typedef IteratorT input_iterator_type; |
| 33 | typedef iterator_range<IteratorT> match_type; |
| 34 | typedef function2< |
| 35 | match_type, |
| 36 | input_iterator_type, |
| 37 | input_iterator_type> finder_type; |
| 38 | |
| 39 | protected: |
| 40 | // Protected construction/destruction |
| 41 | |
| 42 | // Default constructor |
| 43 | find_iterator_base() {} |
| 44 | // Copy construction |
| 45 | find_iterator_base( const find_iterator_base& Other ) : |
| 46 | m_Finder(Other.m_Finder) {} |
| 47 | |
| 48 | // Constructor |
| 49 | template<typename FinderT> |
| 50 | find_iterator_base( FinderT Finder, int ) : |
| 51 | m_Finder(Finder) {} |
| 52 | |
| 53 | // Destructor |
| 54 | ~find_iterator_base() {} |
| 55 | |
| 56 | // Find operation |
| 57 | match_type do_find( |
| 58 | input_iterator_type Begin, |
| 59 | input_iterator_type End ) const |
| 60 | { |
| 61 | if (!m_Finder.empty()) |
| 62 | { |
| 63 | return m_Finder(Begin,End); |
| 64 | } |
| 65 | else |
| 66 | { |
| 67 | return match_type(End,End); |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | // Check |
| 72 | bool is_null() const |
| 73 | { |
| 74 | return m_Finder.empty(); |
| 75 | } |
| 76 | |
| 77 | private: |
| 78 | // Finder |
| 79 | finder_type m_Finder; |
| 80 | }; |
| 81 | |
| 82 | } // namespace detail |
| 83 | } // namespace algorithm |
| 84 | } // namespace boost |
| 85 | |
| 86 | |
| 87 | #endif // BOOST_STRING_FIND_ITERATOR_DETAIL_HPP |
| 88 |