21         pub fields: Fields,
37     pub enum Fields {
38         /// Named fields of a struct or struct variant such as `Point { x: f64,
42         /// Unnamed fields of a tuple struct or tuple variant such as `Some(T)`.
51     /// Named fields of a struct or struct variant such as `Point { x: f64,
61     /// Unnamed fields of a tuple struct or tuple variant such as `Some(T)`.
69 impl Fields {  impl
72     /// variant's fields uniformly.
75             Fields::Unit => crate::punctuated::empty_punctuated_iter(),  in iter()
76             Fields::Named(f) => f.named.iter(),  in iter()
77             Fields::Unnamed(f) => f.unnamed.iter(),  in iter()
83     /// struct or variant's fields uniformly.
86             Fields::Unit => crate::punctuated::empty_punctuated_iter_mut(),  in iter_mut()
87             Fields::Named(f) => f.named.iter_mut(),  in iter_mut()
88             Fields::Unnamed(f) => f.unnamed.iter_mut(),  in iter_mut()
92     /// Returns the number of fields.
95             Fields::Unit => 0,  in len()
96             Fields::Named(f) => f.named.len(),  in len()
97             Fields::Unnamed(f) => f.unnamed.len(),  in len()
101     /// Returns `true` if there are zero fields.
104             Fields::Unit => true,  in is_empty()
105             Fields::Named(f) => f.named.is_empty(),  in is_empty()
106             Fields::Unnamed(f) => f.unnamed.is_empty(),  in is_empty()
111         /// Get an iterator over the fields of a struct or variant as [`Member`]s.
113         /// variant's fields uniformly.
126         ///     let members = input.fields.members();
140         /// For structs with named fields, it produces an expression like `Self { a:
141         /// self.a.clone() }`. For structs with unnamed fields, `Self { 0:
145                 fields: self.iter(),
152 impl IntoIterator for Fields {  implementation
158             Fields::Unit => Punctuated::<Field, ()>::new().into_iter(),  in into_iter()
159             Fields::Named(f) => f.named.into_iter(),  in into_iter()
160             Fields::Unnamed(f) => f.unnamed.into_iter(),  in into_iter()
165 impl<'a> IntoIterator for &'a Fields {  implementation
174 impl<'a> IntoIterator for &'a mut Fields {  implementation
195         /// Fields of tuple structs have no names.
205     fields: punctuated::Iter<'a, Field>,  field
213         let field = self.fields.next()?;  in next()
235             fields: self.fields.clone(),  in clone()
244     use crate::data::{Field, Fields, FieldsNamed, FieldsUnnamed, Variant};
265             let fields = if input.peek(token::Brace) {  in parse()  localVariable
266                 Fields::Named(input.parse()?)  in parse()
268                 Fields::Unnamed(input.parse()?)  in parse()
270                 Fields::Unit  in parse()
295                 fields,  in parse()
388             self.fields.to_tokens(tokens);  in to_tokens()