3 use ast::{self, Ast};
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()
119 pub fn visit<V: Visitor>(ast: &Ast, visitor: V) -> Result<V::Output, V::Err> {  in visit()  argument
128     stack: Vec<(&'a Ast, Frame<'a>)>,
148         head: &'a Ast,
150         tail: &'a [Ast],
156         head: &'a Ast,
158         tail: &'a [Ast],
208         mut ast: &'a Ast,  in visit()  argument
258         ast: &'a Ast,  in induct()  argument
262             Ast::Class(ast::Class::Bracketed(ref x)) => {  in induct()
266             Ast::Repetition(ref x) => Some(Frame::Repetition(x)),  in induct()
267             Ast::Group(ref x) => Some(Frame::Group(x)),  in induct()
268             Ast::Concat(ref x) if x.asts.is_empty() => None,  in induct()
269             Ast::Concat(ref x) => {  in induct()
272             Ast::Alternation(ref x) if x.asts.is_empty() => None,  in induct()
273             Ast::Alternation(ref x) => Some(Frame::Alternation {  in induct()
440     fn child(&self) -> &'a Ast {  in child()  argument