etreenode.java

来自「一个非常简洁的java脚本引擎」· Java 代码 · 共 43 行

package murlen.util.fscript;

/**
 * <p>ETreeNode - an Expression tree node - used by Parser</p>
 * <p>
 * <I>Copyright (C) 2000 murlen.</I></p>
 * <p>
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.</p>
 * <p>
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.</p>
 *
 * <p>You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA </p>
 * @author murlen
 */
class ETreeNode {
    
    static int E_OP=0;
    static int E_VAL=1;
    
    int type;
    
    Object value;
    
    ETreeNode left;
    ETreeNode right;
    
    ETreeNode parent;
    
    public String toString(){
        return new String("Type=" + type + " Value=" + value);
    }
    
    
}