//copyright (C) 2007 Mocanu Cristian Romeo

package balls;

import java.util.LinkedList;

import java.util.List;

public enum BallState {

EXCLUDED, UNKNOWN, UNKNOWN_LIGHT, UNKNOWN_HEAVY;

public boolean isUnknown() {

return (this == UNKNOWN || this == UNKNOWN_LIGHT || this == UNKNOWN_HEAVY);

}

public BallState nextState() {

assert this != EXCLUDED;

switch (this) {

case UNKNOWN:

return UNKNOWN_LIGHT;

case UNKNOWN_LIGHT:

return UNKNOWN_HEAVY;

default:

return EXCLUDED;

}

}

}