src/test/run-pass/macro-stmt_macro_in_expr_macro.rs

   1 // Copyright 2015 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 macro_rules! foo {
  12     () => {
  13         struct Bar;
  14         struct Baz;
  15     }
  16 }
  17
  18 macro_rules! grault {
  19     () => {{
  20         foo!();
  21         struct Xyzzy;
  22         0
  23     }}
  24 }
  25
  26 fn main() {
  27     let x = grault!();
  28     assert_eq!(x, 0);
  29 }