Method addFirst

src/main/java/net/optifine/util/LinkedList.java:11–26

(LinkedList.Node<T> tNode)

    private int size;

    public void addFirst(LinkedList.Node<T> tNode) {
        this.checkNoParent(tNode);

        if (this.isEmpty()) {
            this.first = tNode;
            this.last = tNode;
        } else {
            LinkedList.Node<T> node = this.first;
            tNode.setNext(node);
            node.setPrev(tNode);
            this.first = tNode;
        }

        tNode.setParent(this);
        ++this.size;
    }

    public void addLast(LinkedList.Node<T> tNode) {
        this.checkNoParent(tNode);