def jitclass(spec):
 def wrap(cls):
  if config.DISABLE_JIT:
   return cls
  else:
   return register_class_type(cls, spec, types.ClassType, ClassBuilder)
 return wrap

def jitclass ( spec ) : def wrap ( cls ) : if config . DISABLE_JIT : return cls else : return register_class_type ( cls , spec , types . ClassType , ClassBuilder ) return wrap
a decorator for creating a jitclass .