208     pub fn pop(&mut self) -> Option<Pair<T, P>> {  in pop()
210             self.last.take().map(|t| Pair::End(*t))  in pop()
212             self.inner.pop().map(|(t, p)| Pair::Punctuated(t, p))  in pop()
479 impl<T, P> FromIterator<Pair<T, P>> for Punctuated<T, P> {
480     fn from_iter<I: IntoIterator<Item = Pair<T, P>>>(i: I) -> Self {  in from_iter()
487 impl<T, P> Extend<Pair<T, P>> for Punctuated<T, P>
491     fn extend<I: IntoIterator<Item = Pair<T, P>>>(&mut self, i: I) {  in extend()
501     I: Iterator<Item = Pair<T, P>>,  in do_extend()
509             Pair::Punctuated(a, b) => punctuated.inner.push((a, b)),  in do_extend()
510             Pair::End(a) => {  in do_extend()
568     type Item = Pair<&'a T, &'a P>;
573             .map(|(t, p)| Pair::Punctuated(t, p))  in next()
574             .or_else(|| self.last.next().map(Pair::End))  in next()
586             .map(Pair::End)  in next_back()
587             .or_else(|| self.inner.next_back().map(|(t, p)| Pair::Punctuated(t, p)))  in next_back()
618     type Item = Pair<&'a mut T, &'a mut P>;
623             .map(|(t, p)| Pair::Punctuated(t, p))  in next()
624             .or_else(|| self.last.next().map(Pair::End))  in next()
636             .map(Pair::End)  in next_back()
637             .or_else(|| self.inner.next_back().map(|(t, p)| Pair::Punctuated(t, p)))  in next_back()
658     type Item = Pair<T, P>;
663             .map(|(t, p)| Pair::Punctuated(t, p))  in next()
664             .or_else(|| self.last.next().map(Pair::End))  in next()
676             .map(Pair::End)  in next_back()
677             .or_else(|| self.inner.next_back().map(|(t, p)| Pair::Punctuated(t, p)))  in next_back()
953 pub enum Pair<T, P> {  enum
958 impl<T, P> Pair<T, P> {  impl
963             Pair::Punctuated(t, _) | Pair::End(t) => t,  in into_value()
970             Pair::Punctuated(t, _) | Pair::End(t) => t,  in value()
977             Pair::Punctuated(t, _) | Pair::End(t) => t,  in value_mut()
985             Pair::Punctuated(_, p) => Some(p),  in punct()
986             Pair::End(_) => None,  in punct()
1010             Pair::Punctuated(_, p) => Some(p),  in punct_mut()
1011             Pair::End(_) => None,  in punct_mut()
1019             Some(p) => Pair::Punctuated(t, p),  in new()
1020             None => Pair::End(t),  in new()
1028             Pair::Punctuated(t, p) => (t, Some(p)),  in into_tuple()
1029             Pair::End(t) => (t, None),  in into_tuple()
1036 impl<T, P> Pair<&T, &P> {  implementation
1037     pub fn cloned(self) -> Pair<T, P>  in cloned()
1043             Pair::Punctuated(t, p) => Pair::Punctuated(t.clone(), p.clone()),  in cloned()
1044             Pair::End(t) => Pair::End(t.clone()),  in cloned()
1051 impl<T, P> Clone for Pair<T, P>  implementation
1058             Pair::Punctuated(t, p) => Pair::Punctuated(t.clone(), p.clone()),  in clone()
1059             Pair::End(t) => Pair::End(t.clone()),  in clone()
1066 impl<T, P> Copy for Pair<T, P>  implementation
1126     use crate::punctuated::{Pair, Punctuated};
1142     impl<T, P> ToTokens for Pair<T, P>  implementation
1149                 Pair::Punctuated(a, b) => {  in to_tokens()
1153                 Pair::End(a) => a.to_tokens(tokens),  in to_tokens()