543 pub enum TokenTree {  enum
554 impl TokenTree {  implementation
581 impl From<Group> for TokenTree {  implementation
582     fn from(g: Group) -> TokenTree {  in from()
587 impl From<Ident> for TokenTree {  implementation
588     fn from(g: Ident) -> TokenTree {  in from()
593 impl From<Punct> for TokenTree {  implementation
594     fn from(g: Punct) -> TokenTree {  in from()
599 impl From<Literal> for TokenTree {  implementation
600     fn from(g: Literal) -> TokenTree {  in from()
609 impl Display for TokenTree {  implementation
621 impl Debug for TokenTree {  implementation
1290         fn next(&mut self) -> Option<TokenTree> {  in next()