import com.google.common.base.Predicate;
import com.google.common.collect.ImmutableList;
import java.util.Iterator;



class HorizontalFlip implements ActuatorVisitor {

    @Override
    public Actuator visitUp(Up actuator) {
        return new Up();
    }

    @Override
    public Actuator visitDown(Down actuator) {
        return new Down();
    }

    @Override
    public Actuator visitLeft(Left actuator) {
        return new Right();
    }

    @Override
    public Actuator visitRight(Right actuator) {
        return new Left();
    }

    @Override
    public Actuator visitParallellyComposingActuator(ParallellyComposingActuator actuator) {

        return new Actuator() {

            @Override
            public Actuator accept(ActuatorVisitor v) {
                return new ParallellyComposingActuator(actuator.motors);
            }

            @Override
            public void actuate(Movable movable) {
                for (Actuator m1 : actuator.motors) {
                    Actuator flip = m1.accept(new HorizontalFlip());
                    flip.actuate(movable);
                }
            }
        };
    }

    @Override
    public Actuator visitAmplifyingActuator(AmplifyingActuator actuator) {
        return new Actuator() {

            @Override
            public Actuator accept(ActuatorVisitor v) {
                return new AmplifyingActuator(actuator.motor, actuator.factor);
            }

            @Override
            public void actuate(Movable movable) {
                for (int i = 0; i < actuator.factor; i++) {
                    actuator.motor.accept(new HorizontalFlip()).actuate(movable);
                }
            }
        };
    }

    @Override
    public Actuator visitSequentiallyComposingActuator(SequentiallyComposingActuator actuator) {
       return new Actuator() {

            @Override
            public Actuator accept(ActuatorVisitor v) {
                return new SequentiallyComposingActuator(actuator.iterable);
            }

            @Override
            public void actuate(Movable movable) {
                Pair<Predicate<Movable>, Actuator> act;
                while (actuator.iterable.iterator().hasNext()) {
                    act = actuator.iterable.iterator().next();
                    while (act.first.apply(movable)) {
                        act.second.accept(new HorizontalFlip()).actuate(movable);
                    }
                }

            }
        };
    }

}