And then when stuff is rewritten s.t. once you get there there's always a user logged in and non-null data? Presumably you do away with the temporary variables

And then when stuff is rewritten s.t. once you get there there's always a user logged in and non-null data? Presumably you do away with the temporary variables and just write: has_role(ROLE_ADMIN) && validate(data) If validate(data) needed to be called regardless of has_role, you now have a problem.