The generic handling of code generation method calls by the components is a sequence of three steps : generate any needed setup code , call the child component to add their code generation , and finish by generating any needed wrapup code 組件對代碼生成方法調用的通用處理方式包括三個步驟:生成需要的設置代碼、調用子組件添加子組件的代碼生成、生成需要的包裝代碼。