RWDlistCollectablesIterator Class Reference

Traverses the linked-list from the first (head) to the last (tail) item. More...

#include <rw/dlistcol.h>

Inheritance diagram for RWDlistCollectablesIterator:

Public Member Functions
	RWDlistCollectablesIterator (RWDlistCollectables &s)
virtual RWCollectable *	findNext (const RWCollectable *target)
RWCollectable *	findNextReference (const RWCollectable *e)
RWCollectable *	insertAfterPoint (RWCollectable *a)
virtual RWCollectable *	key () const
virtual RWCollectable *	operator() ()
RWCollectable *	remove ()
RWCollectable *	removeNext (const RWCollectable *target)
RWCollectable *	removeNextReference (const RWCollectable *e)
virtual void	reset ()

Detailed Description

Iterator for class RWDlistCollectables. Traverses the linked-list from the first (head) to the last (tail) item. Functions are provided for moving in either direction.

As with all Rogue Wave iterators, the "current item" is undefined immediately after construction – you must define it by using operator()() or some other (valid) operation.

Once the iterator has advanced beyond the end of the collection it is no longer valid – continuing to use it brings undefined results.

Synopsis

#include <rw/dlistcol.h>
RWDlistCollectables d;
RWDlistCollectablesIterator it(d);

Persistence

None

Constructor & Destructor Documentation

RWDlistCollectablesIterator::RWDlistCollectablesIterator ( RWDlistCollectables &  s )

inline

Constructs an RWDlistCollectablesIterator from an RWDlistCollectables. Immediately after construction, the position of the iterator is undefined.

Member Function Documentation

virtual RWCollectable* RWDlistCollectablesIterator::findNext ( const RWCollectable *  target )

inlinevirtual

Moves the iterator to the next item which isEqual() to the item pointed to by target and returns it. If no item is found, the function returns rwnil and the position of the iterator is undefined.

Implements RWIterator.

RWCollectable* RWDlistCollectablesIterator::findNextReference ( const RWCollectable *  e )

inline

Moves the iterator to the next item which is identical to the item pointed to by e (that is, that has address e) and returns it. If no item is found, the function returns rwnil and the position of the iterator is undefined.

RWCollectable* RWDlistCollectablesIterator::insertAfterPoint ( RWCollectable *  a )

inline

Inserts the item a after the current cursor position and returns the item. The cursor's position is unchanged.

virtual RWCollectable* RWDlistCollectablesIterator::key ( ) const

inlinevirtual

Returns the item at the current iterator position.

Implements RWIterator.

virtual RWCollectable* RWDlistCollectablesIterator::operator() ( )

inlinevirtual

Advances the iterator and returns the next item, or rwnil if the end of the collection has been reached.

Implements RWIterator.

RWCollectable* RWDlistCollectablesIterator::remove ( )

inline

Removes and returns the item at the current cursor position. Afterwards, the iterator is positioned at the previous item in the list.

RWCollectable* RWDlistCollectablesIterator::removeNext ( const RWCollectable *  target )

inline

Moves the iterator to the next item in the list which isEqual() to the item pointed to by target, removes it from the list and returns it. Afterwards, the iterator is positioned at the previous item in the list. If no item is found, the function returns rwnil and the position of the iterator is undefined.

RWCollectable* RWDlistCollectablesIterator::removeNextReference ( const RWCollectable *  e )

inline

Moves iterator to the next item in the list which is identical to the item pointed to by e (that is, that has address e), removes it from the list and returns it. Afterwards, the iterator is positioned at the previous item in the list. If no item is found, the function returns rwnil and the position of the iterator is undefined.

virtual void RWDlistCollectablesIterator::reset ( )

inlinevirtual

Resets the iterator. Afterwards, the position of the iterator is undefined.

Implements RWIterator.