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// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// run-pass
#![allow(unused_imports)]
#![allow(non_camel_case_types)]
// edition:2018
#![feature(decl_macro, uniform_paths)]
// This test is similar to `basic.rs`, but nested in modules.
mod foo {
// Test that ambiguity errors are not emitted between `self::test` and
// `::test`, assuming the latter (crate) is not in `extern_prelude`.
mod test {
pub struct Foo(pub ());
}
pub use test::Foo;
// Test that qualified paths can refer to both the external crate and local item.
mod std {
pub struct io(pub ());
}
pub use ::std::io as std_io;
pub use self::std::io as local_io;
}
// 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;
// Also test that items named `std` in other namespaces don't
// cause ambiguity errors for the import from `std` above.
pub fn std() {}
pub macro std() {}
}
fn main() {
foo::Foo(());
foo::std_io::stdout();
foo::local_io(());
io::stdout();
bar::io::stdout();
bar::std();
bar::std!();
{
// Test that having `io` in a module scope and a non-module
// scope is allowed, when both resolve to the same definition.
use std::io;
use io::stdout;
stdout();
}
}
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