18         pub fields: Fields,
37     pub enum Fields {
75 impl Fields {  impl
81             Fields::Unit => crate::punctuated::empty_punctuated_iter(),  in iter()
82             Fields::Named(f) => f.named.iter(),  in iter()
83             Fields::Unnamed(f) => f.unnamed.iter(),  in iter()
92             Fields::Unit => crate::punctuated::empty_punctuated_iter_mut(),  in iter_mut()
93             Fields::Named(f) => f.named.iter_mut(),  in iter_mut()
94             Fields::Unnamed(f) => f.unnamed.iter_mut(),  in iter_mut()
101             Fields::Unit => 0,  in len()
102             Fields::Named(f) => f.named.len(),  in len()
103             Fields::Unnamed(f) => f.unnamed.len(),  in len()
110             Fields::Unit => true,  in is_empty()
111             Fields::Named(f) => f.named.is_empty(),  in is_empty()
112             Fields::Unnamed(f) => f.unnamed.is_empty(),  in is_empty()
117 impl IntoIterator for Fields {  implementation
123             Fields::Unit => Punctuated::<Field, ()>::new().into_iter(),  in into_iter()
124             Fields::Named(f) => f.named.into_iter(),  in into_iter()
125             Fields::Unnamed(f) => f.unnamed.into_iter(),  in into_iter()
130 impl<'a> IntoIterator for &'a Fields {  implementation
139 impl<'a> IntoIterator for &'a mut Fields {  implementation
256                         Fields::Named(input.parse()?)  in parse()
258                         Fields::Unnamed(input.parse()?)  in parse()
260                         Fields::Unit  in parse()