3 pcursor.hh -- part of flowerlib
5 (c) 1996 Han-Wen Nienhuys&Jan Nieuwenhuizen
12 /// cursor to go with PointerList
14 struct PCursor : private Cursor<void *> {
15 friend class IPointerList<T>;
19 Cursor<void*>::backspace;
21 PointerList<T> &list() { return (PointerList<T>&)Cursor<void*>::list(); }
22 PCursor<T> operator++(int) { return Cursor<void*>::operator++(0);}
23 PCursor<T> operator--(int) { return Cursor<void*>::operator--(0); }
24 PCursor<T> operator+=(int i) { return Cursor<void*>::operator+=(i);}
25 PCursor<T> operator-=(int i) { return Cursor<void*>::operator-=(i); }
26 PCursor<T> operator -(int no) const { return Cursor<void*>::operator-(no);}
27 int operator -(PCursor<T> op) const { return Cursor<void*>::operator-(op);}
28 PCursor<T> operator +( int no) const {return Cursor<void*>::operator+(no);} PCursor(const PointerList<T> & l) : Cursor<void*> (l) {}
30 PCursor( const Cursor<void*>& cursor ) : Cursor<void*>(cursor) { }
31 void* vptr() const { return * ((Cursor<void*> &) *this); }
34 T ptr() const { return (T) vptr(); }
35 T operator ->() const { return ptr(); }
36 operator T() { return ptr(); }
37 T operator *() { return ptr(); }
38 void add(const T& p ) { Cursor<void*>::add((void*) p); }
39 void insert(const T& p ) { Cursor<void*>::insert((void*) p);}
40 static int compare(PCursor<T> a,PCursor<T>b) {
41 return Cursor<void*>::compare(a,b);
45 don't create PointerList<void*>'s.
46 This cursor is just an interface class for Cursor. It takes care of the
47 appropriate type casts
53 template_instantiate_compare(PCursor<T>, PCursor<T>::compare, template<class T>);