84             let attrs = input.call(Attribute::parse_outer)?;  in parse()
85             let vis = input.parse::<Visibility>()?;  in parse()
87             let lookahead = input.lookahead1();  in parse()
89                 let struct_token = input.parse::<Token![struct]>()?;  in parse()
90                 let ident = input.parse::<Ident>()?;  in parse()
91                 let generics = input.parse::<Generics>()?;  in parse()
92                 let (where_clause, fields, semi) = data_struct(input)?;  in parse()
108                 let enum_token = input.parse::<Token![enum]>()?;  in parse()
109                 let ident = input.parse::<Ident>()?;  in parse()
110                 let generics = input.parse::<Generics>()?;  in parse()
111                 let (where_clause, brace, variants) = data_enum(input)?;  in parse()
127                 let union_token = input.parse::<Token![union]>()?;  in parse()
128                 let ident = input.parse::<Ident>()?;  in parse()
129                 let generics = input.parse::<Generics>()?;  in parse()
130                 let (where_clause, fields) = data_union(input)?;  in parse()
153         let mut lookahead = input.lookahead1();
154         let mut where_clause = None;
161             let fields = input.parse()?;
170                 let semi = input.parse()?;
176             let fields = input.parse()?;
179             let semi = input.parse()?;
193         let where_clause = input.parse()?;  in data_enum()
195         let content;  in data_enum()
196         let brace = braced!(content in input);  in data_enum()
197         let variants = content.parse_terminated(Variant::parse, Token![,])?;  in data_enum()
203         let where_clause = input.parse()?;  in data_union()
204         let fields = input.parse()?;  in data_union()