72 lines
1.6 KiB
C++
72 lines
1.6 KiB
C++
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#if !defined __DLINK_HXX__
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#define __DLINK_HXX__
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//+---------------------------------------------------------------------------
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//
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// File: DLINK.HXX
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//
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// Contents: Parametrized doubly linked list and iterators
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//
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// History: 15-Jun-92 BartoszM Created.
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//
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//----------------------------------------------------------------------------
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//+---------------------------------------------------------------------------
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//
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// Class: CDoubleLink
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//
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// Purpose: Linked element
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//
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// History: 15-Jun-92 BartoszM Created.
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//
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// Notes: Use as base for your class. No need to override anything.
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//
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// class CFoo: public CDoubleLink
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// {
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// // your data and code goes here
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// };
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//
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//----------------------------------------------------------------------------
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class CDoubleLink
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{
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public:
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CDoubleLink* Next() { return _next; }
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CDoubleLink* Prev() { return _prev; }
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void Close() { _next = this; _prev = this; }
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BOOL IsSingle() const { return _next == this; }
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void Unlink()
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{
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_next->_prev = _prev;
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_prev->_next = _next;
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}
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void InsertBefore ( CDoubleLink* pAfter )
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{
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CDoubleLink* pBefore = pAfter->_prev;
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_next = pAfter;
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_prev = pBefore;
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pAfter->_prev = this;
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pBefore->_next = this;
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}
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void InsertAfter ( CDoubleLink* pBefore )
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{
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CDoubleLink* pAfter = pBefore->_next;
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_next = pAfter;
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_prev = pBefore;
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pAfter->_prev = this;
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pBefore->_next = this;
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}
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protected:
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CDoubleLink* _next;
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CDoubleLink* _prev;
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};
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#endif
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