27     type Err;  typedef
31     fn finish(self) -> Result<Self::Output, Self::Err>;  in finish()
38     fn visit_pre(&mut self, _ast: &Ast) -> Result<(), Self::Err> {  in visit_pre()
44     fn visit_post(&mut self, _ast: &Ast) -> Result<(), Self::Err> {  in visit_post()
50     fn visit_alternation_in(&mut self) -> Result<(), Self::Err> {  in visit_alternation_in()
60     ) -> Result<(), Self::Err> {  in visit_class_set_item_pre()
70     ) -> Result<(), Self::Err> {  in visit_class_set_item_post()
80     ) -> Result<(), Self::Err> {  in visit_class_set_binary_op_pre()
90     ) -> Result<(), Self::Err> {  in visit_class_set_binary_op_post()
99     ) -> Result<(), Self::Err> {  in visit_class_set_binary_op_in()
119 pub fn visit<V: Visitor>(ast: &Ast, visitor: V) -> Result<V::Output, V::Err> {  in visit()
210     ) -> Result<V::Output, V::Err> {  in visit()
260     ) -> Result<Option<Frame<'a>>, V::Err> {  in induct()
311     ) -> Result<(), V::Err> {  in visit_class()
352     ) -> Result<(), V::Err> {  in visit_class_pre()
369     ) -> Result<(), V::Err> {  in visit_class_post()