rust/src/test/run-pass/macro-attribute-expansion.rs

// Copyright 2013-2014 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.

// ignore-pretty - token trees can't pretty print

macro_rules! descriptions {
    ($name:ident is $desc:expr) => {
        // Check that we will correctly expand attributes
        #[doc = $desc]
        #[allow(dead_code)]
        const $name : &'static str = $desc;
    }
}

// item
descriptions! { DOG is "an animal" }
descriptions! { RUST is "a language" }

pub fn main() {
}