args_error.cpp

static SQRegFunction reg[] = {
	// I believe the main reason this fails is due to the arguments.
	// but when looking at DXSquirrel (specifically DXSquirrel_Device.cpp) there's nothing special done about it.
	{ "getData", wrap_getData, 2, _SC("ts") },  
	{ "getTestData", wrap_getTestData, NULL, NULL },
	{ 0, 0 }
};

int wrap_getData(SQVM* v) {

	// fails when we have arguments
	const char* arg0;
	sq_getstring(v, -1, &arg0);
	auto instance = new Data;
	
	// pop arguments off stack
	// fails with or without poping arguments off stack
	SQInteger nargs = sq_gettop(v);
	sq_pop(v, nargs);

	// fails with or without lambda
	auto ret = [&]() -> int {
		sq_pushstring(v, "Data", -1);
		if (SQ_FAILED(sq_get(v, -2))) {
			// failure here.
			return sq_throwerror(v, "Couldn't resolve squirrel type 'Data'");
		}
		
		if (SQ_FAILED(sq_createinstance(v, 1)) || SQ_FAILED(sq_setinstanceup(v, 1, instance))) {
			return sq_throwerror(v, "Couldn't setup squirrel instance for object type 'Data'");
		}
    
		sq_setreleasehook(v, 1, release_hook<Data>);
		sq_remove(v, -2); // remove object name
    
		return 1;
	};

	return ret();
}

int wrap_getTestData(SQVM* v) {
	sq_pushstring(v, "Data", -1);
	if (SQ_FAILED(sq_get(v, -2))) {
		throw sq_throwerror(v, "Couldn't resolve squirrel type 'Data'");
	}

	auto instance = new Data;
	if (SQ_FAILED(sq_createinstance(v, -1)) || SQ_FAILED(sq_setinstanceup(v, -1, instance))) {
		throw sq_throwerror(v, "Couldn't setup squirrel instance for object type 'Data'");
	}

	sq_setreleasehook(v, -1, release_hook<Data>);
	sq_remove(v, -2); // remove object name

	return 1;
}