production.java

实现2型文法的化简包括：无符号和无用产生式的删除、ε-产生式的消除、单产生式的消除算法实现

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package languageclear;

/**
 *
 * @author L^_^
 */
public class Production{
    char x; 
    String y;
    Production(){
        x='\0';
        y=new String();
    }
    Production(char x_val,String y_val){
        x=x_val;
        y=y_val;
    }
    
    public char getX(){
        return x;
    }
    
    public String getY(){
        return y;
    }
    
   public Production copyProductionTo(){
       Production p_val=new Production();
        p_val.x=this.x;
        p_val.y=this.y;
        return p_val;
    }
   public boolean isEqual(Production P1){
    if(x==P1.x&&y.equals(P1.y))
        return true;
    else
        return false;
   }
}