PET: Partial Evaluation-based Test Case Generator for Bytecode

//This piece of code is inspired by the one of Apache whose licence is in the file DoublyLinkedList.java in the same directory


package related;

 /**
     * Basic doubly linked list node interface.
     */
        public class NodeDLL {
                public NodeDLL next;
                public NodeDLL prev;

                public NodeDLL getNext() { return next; }
                public NodeDLL getPrev() { return prev; }

                public void setNext(NodeDLL newNext) { next = newNext; }
                public void setPrev(NodeDLL newPrev) { prev = newPrev; }

        /**
         * Unlink this node from it's current list...
         */
                public void unlink()
                {
                        if (getNext() != null)
                                getNext().setPrev(getPrev());
                        if (getPrev() != null)
                                getPrev().setNext(getNext());

                        setNext(null);
                        setPrev(null);
                }

        /**
         * Link this node in, infront of nde (unlinks it's self
         * before hand if needed).
         @param nde the node to link in before.
         */
                public void insertBefore(NodeDLL nde)
                {
                        // Already here...
                        if (this == ndereturn;
                        if (getPrev() != null)
                             unlink();
                        // Actually insert this node...
                        if (nde == null) {
                                // empty lst...
                                setNext(this);
                                setPrev(this);
                        else {
                                setNext(nde);
                                setPrev(nde.getPrev());
                                nde.setPrev(this);
                if (getPrev() != null)
                    getPrev().setNext(this);
                        }
                }
        }

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