Hello mate and WELCOME TO THE FORUM!!
The engine is not a "safe" engine and therefore it may well have taken all of the valves out. However, out of most of the snapped cambelts ive seen on the 115's very few have done major damage. All depends on when it snapped etc really. 2nd gear doing an overtake and your likely to have damage. At idle or pulling away, might be lucky!!
Hope that helps,
Alan