//根据输入的命令得到下一个状态
public ProcessState GetNextState(Command command)
{
StateTransition transition = new StateTransition(CurrentState, command);
ProcessState nextState;
if (!transitions.TryGetValue(transition, out nextState))
{
throw new Exception("invalid transition: " + CurrentState + "->" + command);
}
return(nextState);
}
public override bool Equals(object obj)
{
StateTransition other = obj as StateTransition;
return(other != null && this.CurrentState == other.CurrentState && this.command == other.command);
}
