Air condisoner stop working on Toyota corolla89years

It may have leaked out all its Freon gas. If it uses Freon it will not be able to be re-gassed as Freon puts a hole in the ozone layer of the atmosphere. It is expensive to get an air-conditioner re gassed if it uses ozone destroying gas as the new gas is different and the air conditioner needs to be modified to run the newer gas if the Corolla is a older model. Could be compressor has gone faulty. but to replace it will mean it will have to be re-gassed.