193     pub fn pop(&mut self) -> Option<Pair<T, P>> {  in pop()
195             self.last.take().map(|t| Pair::End(*t))  in pop()
197             self.inner.pop().map(|(t, p)| Pair::Punctuated(t, p))  in pop()
459 impl<T, P> FromIterator<Pair<T, P>> for Punctuated<T, P> {
460     fn from_iter<I: IntoIterator<Item = Pair<T, P>>>(i: I) -> Self {  in from_iter()
467 impl<T, P> Extend<Pair<T, P>> for Punctuated<T, P> {
468     fn extend<I: IntoIterator<Item = Pair<T, P>>>(&mut self, i: I) {  in extend()
480                 Pair::Punctuated(a, b) => self.inner.push((a, b)),  in extend()
481                 Pair::End(a) => {  in extend()
540     type Item = Pair<&'a T, &'a P>;
545             .map(|(t, p)| Pair::Punctuated(t, p))  in next()
546             .or_else(|| self.last.next().map(Pair::End))  in next()
558             .map(Pair::End)  in next_back()
559             .or_else(|| self.inner.next_back().map(|(t, p)| Pair::Punctuated(t, p)))  in next_back()
590     type Item = Pair<&'a mut T, &'a mut P>;
595             .map(|(t, p)| Pair::Punctuated(t, p))  in next()
596             .or_else(|| self.last.next().map(Pair::End))  in next()
608             .map(Pair::End)  in next_back()
609             .or_else(|| self.inner.next_back().map(|(t, p)| Pair::Punctuated(t, p)))  in next_back()
630     type Item = Pair<T, P>;
635             .map(|(t, p)| Pair::Punctuated(t, p))  in next()
636             .or_else(|| self.last.next().map(Pair::End))  in next()
648             .map(Pair::End)  in next_back()
649             .or_else(|| self.inner.next_back().map(|(t, p)| Pair::Punctuated(t, p)))  in next_back()
930 pub enum Pair<T, P> {  enum
935 impl<T, P> Pair<T, P> {  impl
940             Pair::Punctuated(t, _) | Pair::End(t) => t,  in into_value()
947             Pair::Punctuated(t, _) | Pair::End(t) => t,  in value()
954             Pair::Punctuated(t, _) | Pair::End(t) => t,  in value_mut()
962             Pair::Punctuated(_, p) => Some(p),  in punct()
963             Pair::End(_) => None,  in punct()
987             Pair::Punctuated(_, p) => Some(p),  in punct_mut()
988             Pair::End(_) => None,  in punct_mut()
996             Some(p) => Pair::Punctuated(t, p),  in new()
997             None => Pair::End(t),  in new()
1005             Pair::Punctuated(t, p) => (t, Some(p)),  in into_tuple()
1006             Pair::End(t) => (t, None),  in into_tuple()
1013 impl<T, P> Clone for Pair<T, P>  implementation
1020             Pair::Punctuated(t, p) => Pair::Punctuated(t.clone(), p.clone()),  in clone()
1021             Pair::End(t) => Pair::End(t.clone()),  in clone()
1072     impl<T, P> ToTokens for Pair<T, P>  implementation
1079                 Pair::Punctuated(a, b) => {  in to_tokens()
1083                 Pair::End(a) => a.to_tokens(tokens),  in to_tokens()