use proc_macro::TokenStream;
#[proc_macro]
pub fn make_answer(_item: TokenStream) -> TokenStream {
"fn answer() -> u32 { 42 }".parse().unwrap()
}
#[proc_macro_derive(HelperAttr, attributes(helper))]
pub fn derive_helper_attr(_item: TokenStream) -> TokenStream {
TokenStream::new()
}