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39 
40 #ifndef QTESTCORELIST_P_H
41 #define QTESTCORELIST_P_H
42 
43 //
44 //  W A R N I N G
45 //  -------------
46 //
47 // This file is not part of the Qt API.  It exists purely as an
48 // implementation detail.  This header file may change from version to
49 // version without notice, or even be removed.
50 //
51 // We mean it.
52 //
53 
54 #include <QtCore/qglobal.h>
55 
56 QT_BEGIN_NAMESPACE
57 
58 
59 template <class T>
60 class QTestCoreList
61 {
62     public:
63         QTestCoreList();
64         virtual ~QTestCoreList();
65 
66         void addToList(T **list);
67         T *nextElement();
68         T *previousElement();
69     private:
70         T *next;
71         T *prev;
72 };
73 
74 template <class T>
QTestCoreList()75 QTestCoreList<T>::QTestCoreList()
76     : next(nullptr)
77     , prev(nullptr)
78 {
79 }
80 
81 template <class T>
~QTestCoreList()82 QTestCoreList<T>::~QTestCoreList()
83 {
84     if (prev) {
85         prev->next = nullptr;
86     }
87     delete prev;
88 
89     if (next) {
90         next->prev = nullptr;
91     }
92     delete next;
93 }
94 
95 template <class T>
addToList(T ** list)96 void QTestCoreList<T>::addToList(T **list)
97 {
98     if (next)
99         next->addToList(list);
100     else {
101         next = *list;
102         if (next)
103             next->prev = static_cast<T*>(this);
104     }
105 
106     *list = static_cast<T*>(this);
107 }
108 
109 template <class T>
nextElement()110 T *QTestCoreList<T>::nextElement()
111 {
112     return next;
113 }
114 
115 template <class T>
previousElement()116 T *QTestCoreList<T>::previousElement()
117 {
118     return prev;
119 }
120 
121 QT_END_NAMESPACE
122 
123 #endif
124