1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
13 #![crate_type = "proc-macro"]
14 #![feature(proc_macro, proc_macro_non_items)]
16 extern crate proc_macro;
20 #[proc_macro_attribute]
21 pub fn attr_tru(_attr: TokenStream, item: TokenStream) -> TokenStream {
22 let name = item.into_iter().skip(1).next().unwrap();
23 quote!(fn $name() -> bool { true })
26 #[proc_macro_attribute]
27 pub fn attr_identity(_attr: TokenStream, item: TokenStream) -> TokenStream {
32 pub fn tru(_ts: TokenStream) -> TokenStream {
37 pub fn ret_tru(_ts: TokenStream) -> TokenStream {
42 pub fn identity(ts: TokenStream) -> TokenStream {