arithexprlist.java

中山大学编译原理课程的一个实验

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package symbols;

/**
 *
 * @author Beeven
 */
public class ArithExprList extends NonTerminal{
    public double max,min;
    public ArithExprList(ArithExpr ae)
    {
        this.type=Type.ArithExprList;
        max=min=ae.value;
    }
    public ArithExprList(ArithExpr ae, ArithExprList ael)
    {
        this.type=Type.ArithExprList;
        double v=ae.value;
        max=((v>ael.max)?v:ael.max);
        min=((v<ael.min)?v:ael.min);
    }
}