Procq.Ruleval stop : ('self, Gramlib.Grammar.norec, 'r, 'r) tval next :
('self, _, 'a, 'r) t ->
('self, _, 'b) Symbol.t ->
('self, Gramlib.Grammar.mayrec, 'b -> 'a, 'r) tval next_norec :
('self, Gramlib.Grammar.norec, 'a, 'r) t ->
('self, Gramlib.Grammar.norec, 'b) Symbol.t ->
('self, Gramlib.Grammar.norec, 'b -> 'a, 'r) t