1 | /*! |
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2 | @file MetaObjectList.h |
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3 | @brief Definition of the MetaObjectList class. |
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4 | |
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5 | The MetaObjectList is a single-linked list, containing all list-elements and their |
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6 | lists wherein the object that owns the MetaObjectList is registered. |
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7 | This allows much faster deleting of objects. |
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8 | */ |
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9 | |
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10 | #ifndef _MetaObjectList_H__ |
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11 | #define _MetaObjectList_H__ |
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12 | |
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13 | #include "ObjectList.h" |
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14 | #include "Identifier.h" |
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15 | |
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16 | namespace orxonox |
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17 | { |
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18 | //! Base-class of MetaObjectListElement, because those is a template |
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19 | class BaseMetaObjectListElement |
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20 | { |
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21 | public: |
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22 | /** @brief Defaultdestructor */ |
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23 | virtual ~BaseMetaObjectListElement() {}; |
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24 | |
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25 | BaseMetaObjectListElement* next_; //!< The next Element in the list |
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26 | }; |
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27 | |
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28 | // ############################### |
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29 | // ### MetaObjectListElement ### |
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30 | // ############################### |
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31 | //! The list-element of the MetaObjectList |
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32 | template <class T> |
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33 | class MetaObjectListElement : public BaseMetaObjectListElement |
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34 | { |
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35 | public: |
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36 | MetaObjectListElement(ObjectList<T>* list, ObjectListElement<T>* element); |
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37 | ~MetaObjectListElement(); |
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38 | |
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39 | ObjectListElement<T>* element_; //!< The list element, containing the object |
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40 | ObjectList<T>* list_; //!< The list, containing the element |
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41 | }; |
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42 | |
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43 | /** |
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44 | @brief Constructor: Creates the list-element with given list and element. |
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45 | */ |
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46 | template <class T> |
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47 | MetaObjectListElement<T>::MetaObjectListElement(ObjectList<T>* list, ObjectListElement<T>* element) |
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48 | { |
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49 | this->element_ = element; |
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50 | this->list_ = list; |
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51 | this->next_ = 0; |
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52 | } |
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53 | |
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54 | /** |
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55 | @brief Destructor: Removes the ObjectListElement from the ObjectList by linking next_ and prev_ of the ObjectListElement. |
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56 | */ |
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57 | template <class T> |
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58 | MetaObjectListElement<T>::~MetaObjectListElement() |
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59 | { |
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60 | if (this->element_->next_) |
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61 | this->element_->next_->prev_ = this->element_->prev_; |
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62 | else |
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63 | this->list_->last_ = this->element_->prev_; // If there is no next_, we deleted the last object and have to update the last_ pointer of the list |
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64 | |
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65 | if (this->element_->prev_) |
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66 | this->element_->prev_->next_ = this->element_->next_; |
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67 | else |
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68 | this->list_->first_ = this->element_->next_; // If there is no prev_, we deleted the first object and have to update the first_ pointer of the list |
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69 | |
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70 | |
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71 | #if HIERARCHY_VERBOSE |
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72 | std::cout << "*** Removing Object from " << ClassIdentifier<T>::getIdentifier()->getName() << "-list.\n"; |
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73 | #endif |
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74 | delete this->element_; |
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75 | } |
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76 | |
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77 | |
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78 | // ############################### |
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79 | // ### ObjectList ### |
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80 | // ############################### |
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81 | //! The MetaObjectList contains ObjectListElements and their ObjectLists. |
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82 | /** |
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83 | The MetaObjectList is a single-linked list, containing all list-elements and their |
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84 | lists wherein the object that owns the MetaObjectList is registered. |
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85 | This allows much faster deleting of objects. |
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86 | */ |
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87 | class MetaObjectList |
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88 | { |
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89 | public: |
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90 | MetaObjectList(); |
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91 | ~MetaObjectList(); |
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92 | template <class T> |
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93 | void add(ObjectList<T>* list, ObjectListElement<T>* element); |
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94 | |
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95 | BaseMetaObjectListElement* first_; //!< The first element in the list |
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96 | }; |
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97 | |
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98 | /** |
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99 | @brief Adds an ObjectList and an element of that list to the MetaObjectList. |
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100 | @param list The ObjectList wherein the element is |
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101 | @param element The element wherein the object is |
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102 | */ |
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103 | template <class T> |
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104 | void MetaObjectList::add(ObjectList<T>* list, ObjectListElement<T>* element) |
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105 | { |
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106 | BaseMetaObjectListElement* temp = this->first_; |
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107 | this->first_ = new MetaObjectListElement<T>(list, element); |
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108 | this->first_->next_ = temp; |
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109 | } |
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110 | } |
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111 | |
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112 | #endif |
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