'''
索  引：INDEX_S${sindex}
功  能：${desc}
节  点：步骤${sindex}
交  易：${trade}
'''
def __BAP_${trade}_S${sid}_IMPL(__REQ__,__RSP__,__SND__,__RCV__):
    CGC_Debug("调用步骤 STEP[${sindex}]:[${desc}]")
    try:
        BAPC_Builtin_SetDefaultExceptNode(None)

        _Result_ = None
        _Method_ = ${startFunc}
        while(type(_Method_) is FunctionType):
            _Result_ = _Method_(__REQ__,__RSP__,__SND__,__RCV__)
            _Method_ = _Result_

${logicText}
    except Exception,PyExcp:
        BAPC_Builtin_SetGlobalError("E","BAPC0E001",str(PyExcp))
        CGC_Debug(str(PyExcp))
        return None