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- // Borland C++ - (C) Copyright 1991 by Borland International
-
- // Contents ----------------------------------------------------------------
- //
- // Queue::get
- // Queue::initIterator
- // Queue::hashValue
- //
- // Description
- //
- // Implementation of class Queue member functions.
- //
- // End ---------------------------------------------------------------------
-
- // Interface Dependencies ---------------------------------------------------
-
- #ifndef __CLSTYPES_H
- #include <clstypes.h>
- #endif
-
- #ifndef __OBJECT_H
- #include <object.h>
- #endif
-
- #ifndef __QUEUE_H
- #include <queue.h>
- #endif
-
- // End Interface Dependencies ------------------------------------------------
-
- // Implementation Dependencies ----------------------------------------------
-
- #ifndef __DBLLIST_H
- #include <dbllist.h>
- #endif
-
- // End Implementation Dependencies -------------------------------------------
-
-
- // Member Function //
-
- Queue::~Queue()
-
- // Summary -----------------------------------------------------------------
- //
- // Destructor for a Queue object.
- //
- // We don't do anything here, because the destructor for theQueue
- // will take care of destroying the contained objects.
- //
- // End ---------------------------------------------------------------------
- {
- }
- // End Destructor //
-
-
- // Member Function //
-
- Object& Queue::get()
-
- // Summary -----------------------------------------------------------------
- //
- // Gets an object from the queue. The object becomes the ownership
- // of the receiver.
- //
- // Return Value
- //
- // firstIn
- //
- // We return the element which is a the tail of the queue, i.e. the
- // first element in to the queue.
- //
- // End ---------------------------------------------------------------------
- {
- Object& temp = theQueue.peekAtTail();
- if ( temp != NOOBJECT )
- {
- theQueue.detachFromTail( temp );
- itemsInContainer--;
- }
- return temp;
- }
- // End Member Function Queue::get //
-
-
- // Member Function //
-
- classType Queue::isA() const
-
- // Summary -----------------------------------------------------------------
- //
- // Returns a predefined value for the class Queue.
- //
- // Parameters
- //
- // none
- //
- // End ---------------------------------------------------------------------
- {
- return queueClass;
- }
- // End Member Function Queue::isA //
-
-
- // Member Function //
-
- char *Queue::nameOf() const
-
- // Summary -----------------------------------------------------------------
- //
- // Returns the string "Queue".
- //
- // Parameters
- //
- // none
- //
- // End ---------------------------------------------------------------------
- {
- return "Queue";
- }
- // End Member Function Queue::nameOf //
-
-
- // Member Function //
-
- hashValueType Queue::hashValue() const
-
- // Summary -----------------------------------------------------------------
- //
- // Returns the hash value of a queue.
- //
- // End ---------------------------------------------------------------------
- {
- return hashValueType(0);
- }
- // End Member Function Queue::hashValue //
-
- // Member Function //
-
- ContainerIterator& Queue::initIterator() const
-
- // Summary -----------------------------------------------------------------
- //
- // Initializes an iterator for a queue.
- //
- // End ---------------------------------------------------------------------
- {
- return *( (ContainerIterator *)new DoubleListIterator( theQueue ) );
- }
- // End Member Function Queue::initIterator //
-
-