import inspect

class Processor(object):
    '''Base class for processors providing default, empty implementations of
    both required methods.'''

    OK = 0
    FAIL = 1
    ABORT = 2

    def dsevent(self, run, ds):
        '''Called for every event produced by the event loop.

        Default implementation calls event() method for every trigger.

        Override with your own implementation of ``dsevent()`` if you want to
        run code for every physics event, or override ``event()`` to run code
        for every trigger, but not both.'''
        pass

    def finish(self):
        '''Called at end of job.'''
        pass