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