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Add IsNativeParamNullVector and IsNativeParamNullString natives

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Lets plugins check if some other plugin passed NULL_VECTOR or
NULL_STRING to a native in the native callback.
This commit is contained in:
Peace-Maker 2017-03-03 11:47:03 -07:00
parent 9fa4ed8bac
commit 3de269946c
2 changed files with 70 additions and 0 deletions
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54
core/logic/smn_fakenatives.cpp
View File

@ -424,6 +424,58 @@ static cell_t FormatNativeString(IPluginContext *pContext, const cell_t *params)
return SP_ERROR_NONE;
}
static cell_t IsNativeParamNullVector(IPluginContext *pContext, const cell_t *params)
{
if (!s_curnative || (s_curnative->ctx != pContext))
{
return pContext->ThrowNativeError("Not called from inside a native function");
}
cell_t param = params[1];
if (param < 1 || param > s_curparams[0])
{
return pContext->ThrowNativeErrorEx(SP_ERROR_PARAM, "Invalid parameter number: %d", param);
}
int err;
cell_t *addr;
if ((err = s_curcaller->LocalToPhysAddr(s_curparams[param], &addr)) != SP_ERROR_NONE)
{
return err;
}
cell_t *pNullVec = s_curcaller->GetNullRef(SP_NULL_VECTOR);
if (!pNullVec)
{
return 0;
}
return addr == pNullVec ? 1 : 0;
}
static cell_t IsNativeParamNullString(IPluginContext *pContext, const cell_t *params)
{
if (!s_curnative || (s_curnative->ctx != pContext))
{
return pContext->ThrowNativeError("Not called from inside a native function");
}
cell_t param = params[1];
if (param < 1 || param > s_curparams[0])
{
return pContext->ThrowNativeErrorEx(SP_ERROR_PARAM, "Invalid parameter number: %d", param);
}
int err;
char *str;
if ((err = s_curcaller->LocalToStringNULL(s_curparams[param], &str)) != SP_ERROR_NONE)
{
return err;
}
return str == nullptr ? 1 : 0;
}
//tee hee
REGISTER_NATIVES(nativeNatives)
{
@ -439,5 +491,7 @@ REGISTER_NATIVES(nativeNatives)
{"SetNativeArray", SetNativeArray},
{"SetNativeCellRef", SetNativeCellRef},
{"SetNativeString", SetNativeString},
{"IsNativeParamNullVector", IsNativeParamNullVector},
{"IsNativeParamNullString", IsNativeParamNullString},
{NULL, NULL},
};

16
plugins/include/functions.inc
View File

@ -465,6 +465,22 @@ native int GetNativeArray(int param, any[] local, int size);
*/
native int SetNativeArray(int param, const any[] local, int size);
/**
* Check if the native parameter is the NULL_VECTOR.
*
* @param param Parameter number, starting from 1.
* @return True if NULL_VECTOR, false otherwise.
*/
native bool IsNativeParamNullVector(int param);
/**
* Check if the native parameter is the NULL_STRING.
*
* @param param Parameter number, starting from 1.
* @return True if NULL_STRING, false otherwise.
*/
native bool IsNativeParamNullString(int param);
/**
* Formats a string using parameters from a native.
*