POVMSResult POVMS_MessageReceiver::ReceiveHandler(POVMSObjectPtr msg, POVMSObjectPtr result, int mode, void *privatedataptr)
{
POVMS_MessageReceiver *self = (POVMS_MessageReceiver *)privatedataptr;
HandlerNode *nodeptr = nullptr;
POVMSType hclass = kPOVMSType_Null;
POVMSType hid = kPOVMSType_Null;
POVMSResult err = pov_base::kNoErr;
if (self == nullptr)
err = pov_base::kParamErr;
if(err == pov_base::kNoErr)
err = POVMSMsg_GetMessageClass(msg, &hclass);
if(err == pov_base::kNoErr)
err = POVMSUtil_GetType(msg, kPOVMSMessageIdentID, &hid);
for (nodeptr = self->receivers; nodeptr != nullptr && err == pov_base::kNoErr; nodeptr = nodeptr->next)
{
if((nodeptr->hclass == hclass) && ((nodeptr->hid == hid) || (nodeptr->hid == kPOVMSType_WildCard)))
{
if (nodeptr->handleroo != nullptr)
{
POVMS_Message result_obj(result);
POVMS_Message msg_obj(msg);
// Note: This try-catch block is only required because msg_obj.DetachData always has to be executed! [trf]
try
{
nodeptr->handleroo->Call(msg_obj, result_obj, mode);
}
catch(...)
{
// result and msg no longer own their resources; if we don't clear them here,
// we can get a double-free in a parent method when this method throws an exception.
// an example of this is when create scene fails with an out-of-memory exception.
memset(result, 0, sizeof(*result));
memset(msg, 0, sizeof(*msg));
msg_obj.DetachData();
throw;
}
msg_obj.DetachData();
if ((result != nullptr) && (result_obj.IsNull() == false))
*result = result_obj();
}
else if (nodeptr->handler != nullptr)
nodeptr->handler->Call(msg, result, mode);
else
err = pov_base::kNullPointerErr;
}
}
return err;
}
POVMSType POVMS_Message::GetClass()
{
POVMSType type;
int err;
err = POVMSMsg_GetMessageClass(&data, &type);
if(err != kNoErr)
throw err;
return type;
}
POVMSType POVMS_Message::GetClass()
{
POVMSType type;
int err;
err = POVMSMsg_GetMessageClass(&data, &type);
if(err != pov_base::kNoErr)
throw POV_EXCEPTION_CODE(err);
return type;
}
int POVMS_MessageReceiver::ReceiveHandler(POVMSObjectPtr msg, POVMSObjectPtr result, int mode, void *privatedataptr)
{
POVMS_MessageReceiver *self = (POVMS_MessageReceiver *)privatedataptr;
HandlerNode *nodeptr = NULL;
POVMSType hclass = kPOVMSType_Null;
POVMSType hid = kPOVMSType_Null;
int err = kNoErr;
if(self == NULL)
err = kParamErr;
if(err == kNoErr)
err = POVMSMsg_GetMessageClass(msg, &hclass);
if(err == kNoErr)
err = POVMSUtil_GetType(msg, kPOVMSMessageIdentID, &hid);
if(err == kNoErr)
{
for(nodeptr = self->receivers; nodeptr != NULL; nodeptr = nodeptr->next)
{
if((nodeptr->hclass == hclass) && ((nodeptr->hid == hid) || (nodeptr->hid == kPOVMSType_WildCard)))
{
try
{
if(nodeptr->handleroo != NULL)
{
POVMS_Message msg_obj(msg);
POVMS_Message result_obj(result);
nodeptr->handleroo->Call(msg_obj, result_obj, mode);
msg_obj.DetachData();
if(result != NULL)
*result = result_obj();
result_obj.DetachData();
}
else if(nodeptr->handler != NULL)
nodeptr->handler->Call(msg, result, mode);
else
err = kNullPointerErr;
}
catch(int e)
{
err = e;
}
catch(...)
{
err = kParamErr;
}
}
}
}
return err;
}