from __future__ import absolute_import
from __future__ import division
from __future__ import print_function

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.
        '''

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