diff options
| -rw-r--r-- | dhall_proc_macros/src/derive.rs | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/dhall_proc_macros/src/derive.rs b/dhall_proc_macros/src/derive.rs index 0975d98..a6b39ad 100644 --- a/dhall_proc_macros/src/derive.rs +++ b/dhall_proc_macros/src/derive.rs @@ -78,15 +78,25 @@ fn derive_for_enum( constraints.push(ty.clone()); let ty = static_type(ty); Ok(quote!( (#name.to_owned(), Some(#ty)) )) - } + }, syn::Fields::Unnamed(_) => Err(Error::new( v.span(), "Derive StaticType: Variants with more than one field are not supported", )), - syn::Fields::Named(_) => Err(Error::new( - v.span(), - "Derive StaticType: Named variants are not supported", - )), + syn::Fields::Named(fields) => { + let entries = fields + .named + .iter() + .map(|field| { + constraints.push(field.ty.clone()); + let ty = static_type(&field.ty); + let name = field.ident.as_ref().unwrap().to_string(); + quote!( (#name.to_owned(), #ty) ) }); + let record = quote! {::serde_dhall::SimpleType::Record( + vec![ #(#entries),* ].into_iter().collect() + )}; + Ok(quote!( (#name.to_owned(), Some(#record)) )) + } } }) .collect::<Result<_, Error>>()?; |