#@ MODIF N_OPS Noyau  DATE 17/08/2011   AUTEUR COURTOIS M.COURTOIS 
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from N_utils import import_object

class OPS:
    """Wrapper to ops functions.
    This allows to import them only when they are needed."""

    def __init__(self, uri):
        """Initialization"""
        self.uri = uri

    def __call__(self, *args, **kwargs):
        """Import the real function and call it."""
        func = import_object(self.uri)
        return func(*args, **kwargs)


# utilisé par exemple par des macros où tout est fait dans l'init.
class NOTHING(OPS):
    """OPS which does nothing."""

    def __call__(self, macro, *args, **kwargs):
        macro.set_icmd(1)
        return 0

EMPTY_OPS = NOTHING(None)
