not.java

来自「myassembler（大学作业）」· Java 代码 · 共 20 行

public class Not extends Expression {
   private Expression op;
   
   public Not(Expression f) {
      op = (Expression)f.clone();
   }
   
   public int eval() {
      return ((op.eval()==1)?0:1);
   }
   
   public Object clone() {
      return new Not(op);
   }
   
   public String toString() {
      return op.toString()+labelling()+"NOT\n";
   }
}