[PATCH 1 of 2] revlog: add __contains__ for fast membership test

[Yuya Nishihara]

On Wed, 04 Feb 2015 16:21:05 +0000, Pierre-Yves David wrote:
> On 02/04/2015 01:27 PM, Yuya Nishihara wrote:
> > +    def __contains__(self, rev):
> > +        """filtered version of revlog.__contains__"""
> > +        return (revlog.revlog.__contains__(self, rev)
> > +                and rev not in self.filteredrevs)
> 
> I think there is some magical optimisation to do here, like hard coding 
> the __contains__ content and maybe test for the existence of any 
> filtered revision before checking for members

I thought about it, but I didn't.  There's no hot loop calling __contains__,
so I can't say it has benefit now.

Regards,