| [221] | 1 | #ifndef _Iterator_H__ |
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| 2 | #define _Iterator_H__ |
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| 3 | |
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| 4 | namespace orxonox |
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| 5 | { |
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| 6 | template <class T> |
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| 7 | class Iterator |
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| 8 | { |
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| 9 | public: |
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| 10 | Iterator() |
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| 11 | { |
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| 12 | this->elementForwards_ = ClassIdentifier<T>::getIdentifier()->objects_.first_; |
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| 13 | this->elementBackwards_ = ClassIdentifier<T>::getIdentifier()->objects_.last_; |
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| 14 | this->iteratingForwards_ = true; |
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| 15 | } |
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| 16 | |
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| 17 | Iterator<T> operator++(int step) |
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| 18 | { |
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| 19 | Iterator<T> copy = *this; |
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| 20 | |
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| 21 | if (step < 1) |
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| 22 | step = 1; |
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| 23 | |
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| 24 | for (int i = 0; i < step; i++) |
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| 25 | this->elementForwards_ = this->elementForwards_->next_; |
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| 26 | |
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| 27 | return copy; |
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| 28 | } |
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| 29 | |
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| 30 | Iterator<T> operator--(int step) |
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| 31 | { |
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| 32 | Iterator<T> copy = *this; |
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| 33 | |
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| 34 | if (this->iteratingForwards_) |
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| 35 | { |
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| 36 | this->iteratingForwards_ = false; |
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| 37 | } |
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| 38 | else |
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| 39 | { |
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| 40 | if (step < 1) |
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| 41 | step = 1; |
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| 42 | |
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| 43 | for (int i = 0; i < step; i++) |
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| 44 | this->elementBackwards_ = this->elementBackwards_->prev_; |
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| 45 | } |
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| 46 | |
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| 47 | return copy; |
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| 48 | } |
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| 49 | |
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| 50 | T* operator*() |
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| 51 | { |
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| 52 | if (this->iteratingForwards_) |
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| 53 | return dynamic_cast<T*>(this->elementForwards_->object_); |
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| 54 | else |
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| 55 | return dynamic_cast<T*>(this->elementBackwards_->object_); |
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| 56 | } |
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| 57 | |
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| 58 | T* operator->() const |
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| 59 | { |
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| 60 | if (this->iteratingForwards_) |
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| 61 | return dynamic_cast<T*>(this->elementForwards_->object_); |
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| 62 | else |
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| 63 | return dynamic_cast<T*>(this->elementBackwards_->object_); |
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| 64 | |
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| 65 | } |
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| 66 | |
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| 67 | operator bool() |
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| 68 | { |
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| 69 | if (this->iteratingForwards_) |
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| 70 | return (this->elementForwards_ != 0); |
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| 71 | else |
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| 72 | return (this->elementBackwards_->prev_ != 0); |
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| 73 | } |
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| 74 | |
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| 75 | bool operator!=(int compare) |
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| 76 | { |
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| 77 | if (compare != 0) |
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| 78 | std::cout << "Warning: Comparing the " << ClassIdentifier<T>::getIdentifier()->getName() << "-List-Iterator with " << compare << " has no effect. Only comparison with 0 works.\n"; |
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| 79 | |
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| 80 | if (this->iteratingForwards_) |
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| 81 | return (this->elementForwards_ != 0); |
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| 82 | else |
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| 83 | return (this->elementBackwards_->prev_ != 0); |
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| 84 | } |
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| 85 | |
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| 86 | |
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| 87 | private: |
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| 88 | ObjectListElement* elementForwards_; |
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| 89 | ObjectListElement* elementBackwards_; |
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| 90 | bool iteratingForwards_; |
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| 91 | }; |
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| 92 | } |
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| 93 | |
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| 94 | #endif |
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