src/test/ui/run-pass/uniform-paths/macros.rs

   1 // Copyright 2018 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 #![allow(non_camel_case_types)]
  13
  14 // edition:2018
  15
  16 #![feature(uniform_paths)]
  17
  18 // This test is similar to `basic.rs`, but with macros defining local items.
  19
  20 // Test that ambiguity errors are not emitted between `self::test` and
  21 // `::test`, assuming the latter (crate) is not in `extern_prelude`.
  22 macro_rules! m1 {
  23     () => {
  24         mod test {
  25             pub struct Foo(pub ());
  26         }
  27     }
  28 }
  29 use test::Foo;
  30 m1!();
  31
  32 // Test that qualified paths can refer to both the external crate and local item.
  33 macro_rules! m2 {
  34     () => {
  35         mod std {
  36             pub struct io(pub ());
  37         }
  38     }
  39 }
  40 use ::std::io as std_io;
  41 use self::std::io as local_io;
  42 m2!();
  43
  44 fn main() {
  45     Foo(());
  46     std_io::stdout();
  47     local_io(());
  48 }