+ _ => {},
+ }
+ }
+
+ write!(w, "<").unwrap();
+ for (idx, generic) in generics.params.iter().enumerate() {
+ match generic {
+ syn::GenericParam::Type(type_param) => {
+ write!(w, "{}", if idx != 0 { ", " } else { "" }).unwrap();
+ let type_ident = &type_param.ident;
+ if types.understood_c_type(&syn::parse_quote!(#type_ident), Some(&gen_types)) {
+ types.write_c_type_in_generic_param(w, &syn::parse_quote!(#type_ident), Some(&gen_types), false);
+ } else {
+ if let syn::PathArguments::AngleBracketed(args) = generics_impld {
+ if let syn::GenericArgument::Type(ty) = &args.args[idx] {
+ types.write_c_type_in_generic_param(w, &ty, Some(&gen_types), false);
+ }
+ }
+ }
+ },
+ syn::GenericParam::Lifetime(lt) => {
+ if dummy_lifetimes {
+ write!(w, "'_").unwrap();
+ } else if concrete_lifetimes {
+ write!(w, "'static").unwrap();
+ } else {
+ write!(w, "{}'{}", if idx != 0 { ", " } else { "" }, lt.lifetime.ident).unwrap();
+ }
+ },
+ _ => unimplemented!(),