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