If you were to have damaged the bike, then you probably also hurt the pedestrian so it would be good to call the police to report a collision. Its possible, though unlikely, that the pedestrian may admit to fault / be apologetic / offer to pay for your bike. If not I think your only recourse would be to sue (and for that you obviously need to identify the pedestrian). Is it worth it to sue? Obviously depends on the extent of your injury, but if you've just taco'ed your wheel I think you are SOL. And since the pedestrian doesn't carry insurance actually getting the money you successfully sue for may be another story!

Remember also that no matter where a pedestrian jumped from, its often assumed that hitting a pedestrian is the fault of the person that hit them (and probably particularly since cyclists seem to be lowest on the police totem pole), so that by calling the police you risk also being found partially at fault.