I know there is no pillar matcher currently. Is there something that would prevent me from writing a pillar matcher?

I had played around with something like this in salt/top.sls:

    'role:production':

      - match: grain

This was set in the minion config. But now I want this set in pillar/top.sls on the master. So all I want to be able to do is swap "match: grain" with "match: pillar" in the example above.

Thanks.

-Tom