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- #ifndef __LSTELEM_H
- #define __LSTELEM_H
-
- //
- // This file contains proprietary information of Borland International.
- // Copying or reproduction without prior written approval is prohibited.
- //
- // Copyright (c) 1990
- // Borland International
- // 1800 Scotts Valley Dr.
- // Scotts Valley, CA 95066
- // (408) 438-8400
- //
-
- // Contents ----------------------------------------------------------------
- //
- // ListElement
- //
- // Description
- //
- // Defines the class ListElement. ListElements are used in objects
- // which link other objects together and nowhere else.
- //
- // End ---------------------------------------------------------------------
-
- // Interface Dependencies ---------------------------------------------------
-
- #ifndef __IOSTREAM_H
- #include <iostream.h>
- #define __IOSTREAM_H
- #endif
-
- #ifndef __CLSTYPES_H
- #include "clstypes.h"
- #endif
-
- #ifndef __OBJECT_H
- #include "object.h"
- #endif
-
- // End Interface Dependencies ------------------------------------------------
-
- // Class //
-
- class ListElement
- {
- public:
- ListElement( Object *o ) { data = o; next = 0; }
- ~ListElement() { delete data; }
-
- private:
- ListElement *next;
- Object *data;
- friend class List;
- friend class ListIterator;
- };
-
- // Description -------------------------------------------------------------
- //
- // Defines the abstract class ListElement.
- //
- // ListElement objects, i.e. objects instantiated of classes derived from
- // ListElement, are used in sequences where insertions and deletions
- // are defined.
- //
- // Public Members
- //
- // none
- //
- // Private Members
- //
- // next
- //
- // Pointer to the next list element.
- //
- // data
- //
- // Pointer to the list element's data.
- //
- // Friends
- //
- // class List
- //
- // The class which uses class ListElement, class List, is declared
- // as a friend.
- //
- // End ---------------------------------------------------------------------
-
-
- #endif // ifndef __LSTELEM_H //
-
-