Checking of code with Non-Typesystem rule Follow

Hi MPS Team,

i want the user to follow our coding guidelines. So i have to force him not only towards certain method names but also return types and parameter types / names and so one. Quite complex checks...

Should i do those "expensive" checks in a non-typesystem rule? Or is it better to move them in a pre generate script and throw some errors there?

Best,
Dan