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// This test is similar to `macros.rs`, but nested in modules.
//@ run-pass
//@ edition:2018
#![allow(non_camel_case_types)]
mod foo {
// Test that ambiguity errors are not emitted between `self::test` and
// `::test`, assuming the latter (crate) is not in `extern_prelude`.
macro_rules! m1 {
() => {
mod test {
pub struct Foo(pub ());
}
}
}
pub use test::Foo;
m1!();
// Test that qualified paths can refer to both the external crate and local item.
macro_rules! m2 {
() => {
mod std {
pub struct io(pub ());
}
}
}
pub use ::std::io as std_io;
pub use self::std::io as local_io;
m2!();
}
// Test that we can refer to the external crate unqualified
// (when there isn't a local item with the same name).
use std::io;
mod bar {
// Also test the unqualified external crate import in a nested module,
// to show that the above import doesn't resolve through a local `std`
// item, e.g., the automatically injected `extern crate std;`, which in
// the Rust 2018 should no longer be visible through `crate::std`.
pub use std::io;
}
fn main() {
foo::Foo(());
let _ = foo::std_io::stdout();
foo::local_io(());
let _ = io::stdout();
let _ = bar::io::stdout();
}
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