Function last_inner_ty

flow-derive/src/utils.rs:57–77

(ty: &syn::Type)

}

pub fn last_inner_ty(ty: &syn::Type) -> Option<&syn::Type> {
    if let syn::Type::Path(ref p) = ty {
        if p.path.segments.is_empty() {
            return None;
        }

        if let syn::PathArguments::AngleBracketed(ref inner_ty) =
            p.path.segments.last().unwrap().arguments
        {
            if inner_ty.args.is_empty() {
                return None;
            }

            let inner_ty = inner_ty.args.last().unwrap();
            if let syn::GenericArgument::Type(ref t) = inner_ty {
                return Some(t);
            }
        }
    }
    None
}

pub fn add_field(item: &mut ItemStruct, field: TokenStream) -> Result<()> {
    match item.fields {