3 pcursor.hh -- part of flowerlib
5 (c) 1996 Han-Wen Nienhuys&Jan Nieuwenhuizen
12 /// cursor to go with PointerList
14 struct PCursor : public Cursor<void *> {
16 /// make cursor with #no# items back
17 PCursor<T> operator -( int no) const {
18 return PCursor<T> (Cursor<void*>::operator-(no));
20 int operator -(PCursor<T> op) const {
21 return Cursor<void*>::operator-(op);
23 /// make cursor with #no# items further
24 PCursor<T> operator +( int no) const {
25 return PCursor<T> (Cursor<void*>::operator+(no));
28 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);}
42 // Cursor<void*>::operator void*;
46 don't create PointerList<void*>'s.
47 This cursor is just an interface class for Cursor. It takes care of the
48 appropriate type casts
53 inline int pcursor_compare(PCursor<T> a,PCursor<T>b)
55 return cursor_compare(Cursor<void*>(a),Cursor<void*> (b));
59 template_instantiate_compare(PCursor<T>, pcursor_compare, template<class T>);