src/test/ui/run-pass/hygiene/trait_items.rs

   1 // Copyright 2017 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 // run-pass
  12 // ignore-pretty pretty-printing is unhygienic
  13
  14 #![feature(decl_macro)]
  15
  16 macro m($T:ident, $f:ident) {
  17     pub trait $T {
  18         fn f(&self) -> u32 { 0 }
  19         fn $f(&self) -> i32 { 0 }
  20     }
  21     impl $T for () {}
  22
  23     let _: u32 = ().f();
  24     let _: i32 = ().$f();
  25 }
  26
  27 fn main() {
  28     m!(T, f);
  29     let _: i32 = ().f();
  30 }