/*
 * DList.java
 *
 * Copyright (C) 1997 Shugo Maeda
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation.
 */

package JP.ac.osaka_u.ender.util.regex;

import java.util.*;

/*
 * A class that express list of reachable NFA state set.
 */
class DList {
    private Chars chars;
    private BitSet to;	// a set of NFA state
    private DList next;

    /*
     * The constructor.
     */
    public DList() {
	this(null, new BitSet(), null);
    }

    /*
     * The constructor.
     */
    public DList(Chars chars, BitSet to, DList next) {
	this.chars = chars;
	this.to = to;
	this.next = next;
    }

    public Chars chars() {
	return chars;
    }

    public BitSet to() {
	return to;
    }

    public DList next() {
	return next;
    }

    public void setNext(DList dl) {
	next = dl;
    }
}