3
嗨,我試圖訪問從Lua發送嵌套表C. 表是:訪問嵌套表來獲取值
arg =
{
MagicNumber = {MagicNumber, 0},
ProdNum = {ProdNum, 1},
LetterR = {LetterR, 0xc},
Revision = {Revision, 0xd},
Space1 = {Space1, 0xe},
MnfctrCode = {MnfctrCode, 0xf},
Hyphen1 = {Hyphen1, 0x12},
ZeroCode = {ZeroCode, 0x13},
Hyphen2 = {Hyphen2, 0x15},
MnfctrMnth = {MnfctrMnth, 0x16},
MnfctrYear = {MnfctrYear, 0x18},
SerialNum = {SerialNum, 0x1a},
Space2 = {Space2, 0x1e},
ChkSum = {ChkSum, 0x1f},
}
表裏面都是整數值,和表中的鍵是一個字符串。我的代碼片段是ollows:
lua_pushnil(L);
while(lua_next(L, -2) != 0)
{
field = lua_tostring(L, -2);
printf("\n %d field = %s", i, field);
wrData[i-1] = lua_tonumber(L,-1);
printf("\n data = 0x%x", wrData[i-1]);
lua_pop(L, -1);
i++;
}
我錯過了什麼,因爲我值得到的回覆是0x0
。
'lua_tonumber(L,-1)'是錯誤的,因爲你在索引'-1'有一個表,而不是一個號碼(這些都是從鍵 - 值對從'arg'表中的值) –
' lua_pop(L,-1)'是錯誤的:它需要彈出的時隙數量,而不是它們的位置。 – lhf
感謝您的答案,我從這裏得到了答案:http://stackoverflow.com/questions/27037854/lua-c-read-nested-tables – SanR