| 1 | /*
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| 2 |  * SelectiveIterator_impl.hpp
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| 3 |  *
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| 4 |  *  Created on: Mar 17, 2010
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| 5 |  *      Author: crueger
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| 6 |  */
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| 7 | 
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| 8 | #ifndef SELECTIVEITERATOR_IMPL_HPP_
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| 9 | #define SELECTIVEITERATOR_IMPL_HPP_
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| 10 | 
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| 11 | #include "helpers.hpp"
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| 12 | 
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| 13 | template<class _Target,
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| 14 |          class _Container,
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| 15 |          class _Descriptor>
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| 16 | SelectiveIterator<_Target,_Container,_Descriptor>::SelectiveIterator(_Descriptor _descr, _Container &_content) :
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| 17 |     descr(_descr.get_impl()),
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| 18 |     index(0),
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| 19 |     content(_content)
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| 20 | {
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| 21 |   state = content.begin();
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| 22 |   advanceState();
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| 23 | }
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| 24 | 
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| 25 | template<class _Target,
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| 26 |          class _Container,
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| 27 |          class _Descriptor>
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| 28 | SelectiveIterator<_Target,_Container,_Descriptor>::SelectiveIterator(_Descriptor _descr, _Container &_content, SelectiveIterator<_Target,_Container,_Descriptor>::Iter _state) :
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| 29 |     state(_state),
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| 30 |     descr(_descr.get_impl()),
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| 31 |     index(0),
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| 32 |     content(_content)
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| 33 | {
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| 34 |   advanceState();
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| 35 | }
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| 36 | 
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| 37 | template<class _Target,
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| 38 |          class _Container,
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| 39 |          class _Descriptor>
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| 40 | SelectiveIterator<_Target,_Container,_Descriptor>::SelectiveIterator(const SelectiveIterator<_Target,_Container,_Descriptor>& rhs) :
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| 41 |     state(rhs.state),
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| 42 |     descr(rhs.descr),
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| 43 |     index(rhs.index),
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| 44 |     content(rhs.content)
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| 45 |   {}
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| 46 | 
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| 47 | template<class _Target,
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| 48 |          class _Container,
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| 49 |          class _Descriptor>
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| 50 | SelectiveIterator<_Target,_Container,_Descriptor>& SelectiveIterator<_Target,_Container,_Descriptor>::operator=(const SelectiveIterator<_Target,_Container,_Descriptor>& rhs)
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| 51 | {
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| 52 |   if(&rhs!=this){
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| 53 |     state=rhs.state;
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| 54 |     descr=rhs.descr;
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| 55 |     index=rhs.index;
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| 56 |   }
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| 57 |   return *this;
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| 58 | }
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| 59 | 
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| 60 | template<class _Target,
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| 61 |          class _Container,
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| 62 |          class _Descriptor>
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| 63 | SelectiveIterator<_Target,_Container,_Descriptor>&
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| 64 |   SelectiveIterator<_Target,_Container,_Descriptor>::operator++(){
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| 65 |     ++state;
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| 66 |     ++index;
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| 67 |     advanceState();
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| 68 |     return *this;
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| 69 |   }
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| 70 | 
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| 71 | template<class _Target,
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| 72 |          class _Container,
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| 73 |          class _Descriptor>
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| 74 | SelectiveIterator<_Target,_Container,_Descriptor> SelectiveIterator<_Target,_Container,_Descriptor>::operator++(int){
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| 75 |     SelectiveIterator<_Target,_Container,_Descriptor> res = SelectiveIterator<_Target,_Container,_Descriptor>(*this);
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| 76 |     ++(*this);
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| 77 |     return res;
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| 78 |   }
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| 79 | 
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| 80 | template<class _Target,
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| 81 |          class _Container,
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| 82 |          class _Descriptor>
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| 83 | bool
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| 84 |   SelectiveIterator<_Target,_Container,_Descriptor>::operator==(const SelectiveIterator<_Target,_Container,_Descriptor>& rhs){
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| 85 |     return state==rhs.state;
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| 86 |   }
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| 87 | 
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| 88 | template<class _Target,
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| 89 |          class _Container,
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| 90 |          class _Descriptor>
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| 91 | bool
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| 92 |   SelectiveIterator<_Target,_Container,_Descriptor>::operator!=(const SelectiveIterator<_Target,_Container,_Descriptor>& rhs){
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| 93 |     return state!=rhs.state;
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| 94 |   }
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| 95 | 
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| 96 | template<class _Target,
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| 97 |          class _Container,
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| 98 |          class _Descriptor>
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| 99 | typename SelectiveIterator<_Target,_Container,_Descriptor>::Target
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| 100 |   SelectiveIterator<_Target,_Container,_Descriptor>::operator*(){
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| 101 |     return _take<_Target,value_type>::get(*state);
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| 102 |   }
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| 103 | 
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| 104 | template<class _Target,
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| 105 |          class _Container,
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| 106 |          class _Descriptor>
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| 107 | void
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| 108 |   SelectiveIterator<_Target,_Container,_Descriptor>::advanceState(){
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| 109 |     // go forward until we have a matching atom or the end is reached
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| 110 |     while((state!=content.end()) && (!descr->predicate(*state))){
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| 111 |       ++state;
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| 112 |       ++index;
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| 113 |     }
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| 114 |   }
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| 115 | 
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| 116 | template<class _Target,
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| 117 |          class _Container,
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| 118 |          class _Descriptor>
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| 119 | int
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| 120 |   SelectiveIterator<_Target,_Container,_Descriptor>::getCount(){
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| 121 |     return index;
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| 122 |   }
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| 123 | 
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| 124 | 
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| 125 | #define CONSTRUCT_SELECTIVE_ITERATOR(_Target,_Container,_Descriptor) \
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| 126 |                 template SelectiveIterator<_Target,_Container,_Descriptor>::SelectiveIterator(_Descriptor, _Container&); \
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| 127 |                 template SelectiveIterator<_Target,_Container,_Descriptor>::SelectiveIterator(_Descriptor, _Container&, SelectiveIterator<_Target,_Container,_Descriptor>::Iter); \
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| 128 |     template SelectiveIterator<_Target,_Container,_Descriptor>::SelectiveIterator(const SelectiveIterator<_Target,_Container,_Descriptor>&); \
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| 129 |     template SelectiveIterator<_Target,_Container,_Descriptor>& SelectiveIterator<_Target,_Container,_Descriptor>::operator=(const SelectiveIterator<_Target,_Container,_Descriptor>&); \
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| 130 |     template SelectiveIterator<_Target,_Container,_Descriptor>& SelectiveIterator<_Target,_Container,_Descriptor>::operator++(); \
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| 131 |     template SelectiveIterator<_Target,_Container,_Descriptor> SelectiveIterator<_Target,_Container,_Descriptor>::operator++(int); \
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| 132 |     template bool SelectiveIterator<_Target,_Container,_Descriptor>::operator==(const SelectiveIterator<_Target,_Container,_Descriptor>&); \
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| 133 |     template bool SelectiveIterator<_Target,_Container,_Descriptor>::operator!=(const SelectiveIterator<_Target,_Container,_Descriptor>&); \
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| 134 |     template SelectiveIterator<_Target,_Container,_Descriptor>::Target SelectiveIterator<_Target,_Container,_Descriptor>::operator*(); \
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| 135 |     template int SelectiveIterator<_Target,_Container,_Descriptor>::getCount();
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| 136 | 
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| 137 | #endif /* SELECTIVEITERATOR_IMPL_HPP_ */
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