*src=(u8 *)dataPtr
时间: 2024-08-15 10:10:51 浏览: 41
在这段代码中,`*src = (u8 *)dataPtr` 的含义是将 `dataPtr` 转换为一个无符号8位整数(`u8`)类型的指针,并将该指针赋值给 `src`。`dataPtr` 可能是一个包含地址信息的变量,通过 `(u8 *)` 进行强制类型转换,使其明确表示它指向的是无符号8位数据的内存地址。
这样做通常是当需要将某个数据结构的地址传递给需要操作底层字节的函数,比如在处理字符串、数组或者其他需要直接访问单个字节的场景中。`*src` 表示通过这个指针访问的第一个元素。
相关问题
SWORD32 packetShadowNotifyCallback (VOID *pArg, SDDM_PTABLE pTable, SDDM_SAFEHANDLE hObj, VOIDPTR dataPtr, WORD32 keyLen, WORD32 totalLen, WORD32 op) { WORD32 dwRet = ROSNG_SUCCESS; SDDM_LPP_PACKET_KEY *pPacketKey = NULL; SDDM_LPP_PACKET *pPacketValue = NULL; BYTE* pPacketVar = NULL; LPP_SDDM_ENV *pSddmEnv = (LPP_SDDM_ENV *)pArg; if((NULL == pSddmEnv) || (NULL == pTable) || (NULL == dataPtr) || (0 == keyLen) || (0 == totalLen)) { return ROSNG_PARAM_ERROR; } dwRet = packetShadowSddmDecode(dataPtr, keyLen, totalLen, &pPacketKey, &pPacketValue, &pPacketVar); if(ROSNG_SUCCESS != dwRet) { pSddmEnv->packetShadowDecodeErr++; ROSNG_TRACE_WARNING("packetShadowSddmDecode failed.\n"); return ROSNG_PARAM_ERROR; } if(SDDM_NOTIFY_UPDATE == op) { /* op==更新条目: 读取数据,走添加或者更新本地数据流程 */ dwRet = packetShadowUpdate(pTable, hObj, pPacketKey, pPacketValue, pPacketVar); if(ROSNG_SUCCESS != dwRet) { pSddmEnv->packetShadowUpdateErr++; ROSNG_TRACE_WARNING("packetShadowUpdate failed.\n"); return ROSNG_PARAM_ERROR; } } else if(SDDM_NOTIFY_DELETE == op) { /* op==删除条目: 读取数据,走删除流程 */ dwRet = packetShadowDelete(pPacketKey, pPacketValue); if(ROSNG_SUCCESS != dwRet) { pSddmEnv->packetShadowDeleteErr++; ROSNG_TRACE_WARNING("packetShadowDelete failed.\n"); return ROSNG_PARAM_ERROR; } } else { XOS_ASSERT(0); return ROSNG_PARAM_ERROR; } return dwRet; } 给这个函数用c语言写一个ft测试用例
以下是一个简单的测试用例,测试了函数的返回值和一些输入参数的有效性:
```
#include <stdio.h>
#include <assert.h>
#include "your_header_file.h"
int main() {
// 初始化一些参数
LPP_SDDM_ENV sddmEnv;
SDDM_PTABLE pTable = NULL;
SDDM_SAFEHANDLE hObj = NULL;
VOIDPTR dataPtr = NULL;
WORD32 keyLen = 0;
WORD32 totalLen = 0;
WORD32 op = 0;
// 测试传入 NULL 参数的情况
assert(packetShadowNotifyCallback(NULL, pTable, hObj, dataPtr, keyLen, totalLen, op) == ROSNG_PARAM_ERROR);
assert(packetShadowNotifyCallback(&sddmEnv, NULL, hObj, dataPtr, keyLen, totalLen, op) == ROSNG_PARAM_ERROR);
assert(packetShadowNotifyCallback(&sddmEnv, pTable, NULL, dataPtr, keyLen, totalLen, op) == ROSNG_PARAM_ERROR);
assert(packetShadowNotifyCallback(&sddmEnv, pTable, hObj, NULL, keyLen, totalLen, op) == ROSNG_PARAM_ERROR);
// 测试传入 0 参数的情况
assert(packetShadowNotifyCallback(&sddmEnv, pTable, hObj, dataPtr, 0, totalLen, op) == ROSNG_PARAM_ERROR);
assert(packetShadowNotifyCallback(&sddmEnv, pTable, hObj, dataPtr, keyLen, 0, op) == ROSNG_PARAM_ERROR);
assert(packetShadowNotifyCallback(&sddmEnv, pTable, hObj, dataPtr, 0, 0, op) == ROSNG_PARAM_ERROR);
// TODO: 测试其他情况,例如 SDDM_NOTIFY_UPDATE 和 SDDM_NOTIFY_DELETE
printf("All tests passed!\n");
return 0;
}
```
需要注意的是,这个测试用例只覆盖了一些基本情况,你可能需要测试更多的情况来确保你的代码正确无误。
请写一个python脚本用于 提取以下文件中函数中的参数及参数类型:FUNC(void, StartApplication_CODE) Appl_SccCbk_Get_ISO_20_TimeStamp( P2VAR(Exi_UInt64, AUTOMATIC, SCC_APPL_DATA) DataPtr) { *DataPtr = ApplTime_GetTime64(); } FUNC(void, StartApplication_CODE) Appl_SccCbk_Get_ISO_20CM_EVCCID( P2VAR(Exi_ISO_20_CT_10_identifierType, AUTOMATIC, SCC_APPL_DATA) DataPtr) { STARTAPPLICATION_DUMMY_STATEMENT(DataPtr); } FUNC(void, StartApplication_CODE) Appl_SccCbk_Get_ISO_20CM_SelectedAuthorizationService( P2VAR(Exi_ISO_20_CM_10_authorizationType, AUTOMATIC, SCC_APPL_DATA) DataPtr) { STARTAPPLICATION_DUMMY_STATEMENT(DataPtr); } FUNC(void, StartApplication_CODE) Appl_SccCbk_Get_ISO_20CM_GenChallenge( P2VAR(Exi_ISO_20_CM_10_genChallengeType*, AUTOMATIC, SCC_APPL_DATA) DataPtr) { STARTAPPLICATION_DUMMY_STATEMENT(DataPtr); }FUNC(void, StartApplication_CODE) Appl_SccCbk_Set_ISO_20CM_AuthorizationMode( P2CONST(Exi_ISO_20_CM_10_AuthorizationSetupResChoiceType, AUTOMATIC, SCC_APPL_DATA) DataPtr) { STARTAPPLICATION_DUMMY_STATEMENT(DataPtr); } FUNC(void, StartApplication_CODE) Appl_SccCbk_Set_ISO_20CM_SessionID(P2CONST(Exi_ISO_20_CT_10_sessionIDType, AUTOMATIC, SCC_APPL_DATA) DataPtr) { STARTAPPLICATION_DUMMY_STATEMENT(DataPtr); } FUNC(void, StartApplication_CODE) Appl_SccCbk_Set_ISO_20CM_EVSEID( P2CONST(Exi_ISO_20_CT_10_identifierType, AUTOMATIC, SCC_APPL_DATA) DataPtr) { STARTAPPLICATION_DUMMY_STATEMENT(DataPtr); } FUNC(void, StartApplication_CODE) Appl_SccCbk_Set_ISO_20CM_ServiceRenegotiationSupported(boolean Data) { /*If set to 锟絋rue锟� the SECC is capable of ServiceRenegotiation*/ Data = FALSE; }
可以使用正则表达式来提取函数参数及其类型,以下是示例代码:
```python
import re
# 读取文件内容
with open('filename.c', 'r') as f:
content = f.read()
# 定义正则表达式
pattern = r'FUNC\(.*\)\s*(\w+)\s*\((.*)\)\s*{'
# 查找匹配的函数
matches = re.findall(pattern, content, re.DOTALL)
# 提取参数及其类型
for func_name, params_str in matches:
params = params_str.split(',')
for param in params:
param = param.strip()
if param:
name, _, type_str = param.partition(' ')
print(name, type_str)
```
这个脚本会输出每个函数中的参数及其类型。注意,这个脚本只能提取形如示例中的函数定义,如果函数定义有变化,可能需要调整正则表达式。
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