src/test/compile-fail/syntax-extension-minor.rs

   1 // Copyright 2012-2014 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.
   4 //
   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.
  10
  11 #![feature(concat_idents)]
  12
  13 pub fn main() {
  14     struct Foo;
  15     let _: concat_idents!(F, oo) = Foo; // Test that `concat_idents!` can be used in type positions
  16
  17     let asdf_fdsa = "<.<".to_string();
  18     // this now fails (correctly, I claim) because hygiene prevents
  19     // the assembled identifier from being a reference to the binding.
  20     assert!(concat_idents!(asd, f_f, dsa) == "<.<".to_string());
  21     //~^ ERROR: unresolved name `asdf_fdsa`
  22
  23     assert_eq!(stringify!(use_mention_distinction), "use_mention_distinction");
  24 }