?? notexp.java
字號:
/**
* A NonterminalExpression
*/
public class NotExp implements BooleanExp {
private BooleanExp opernot1;
//private BooleanExp operor2;
public NotExp(BooleanExp oper1) {
opernot1 = oper1;
}
public boolean Evaluate(Context c) {
return !(opernot1.Evaluate(c));
}
public BooleanExp Copy() {
return new NotExp(opernot1.Copy());
}
public BooleanExp Replace(String var, BooleanExp exp) {
return new NotExp(opernot1.Replace(var, exp));
}
}
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