| // Copyright 2016 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| #![crate_type = "proc-macro"] |
| |
| extern crate proc_macro; |
| |
| #[proc_macro_derive(A)] |
| pub fn derive(ts: proc_macro::TokenStream) -> proc_macro::TokenStream { ts } |
| |
| #[derive(Debug)] |
| struct S; |
