comparison mercurial/transaction.py @ 44056:8e09551206f5

transaction: add a `hasfinalize` method

The method allow code to check if an existing callback exists. It allow them to
skip potentially expensive setup for a callback.

Differential Revision: https://phab.mercurial-scm.org/D7832

44055:7f67f53492f7

            # remove callback since the data will have been flushed
            any = self._pendingcallback.pop(cat)(self)
            self._anypending = self._anypending or any
        self._anypending |= self._generatefiles(suffix=b'.pending')
        return self._anypending

    @active
    def addfinalize(self, category, callback):
        """add a callback to be called when the transaction is closed

44056:8e09551206f5

            # remove callback since the data will have been flushed
            any = self._pendingcallback.pop(cat)(self)
            self._anypending = self._anypending or any
        self._anypending |= self._generatefiles(suffix=b'.pending')
        return self._anypending

    @active
    def hasfinalize(self, category):
        """check is a callback already exist for a category
        """
        return category in self._finalizecallback

    @active
    def addfinalize(self, category, callback):
        """add a callback to be called when the transaction is closed