76 lines
2.0 KiB
Rust
76 lines
2.0 KiB
Rust
// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![allow(unused)]
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// Like other items, private imports can be imported and used non-lexically in paths.
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mod a {
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use a as foo;
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use self::foo::foo as bar;
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mod b {
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use super::bar;
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}
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}
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mod foo { pub fn f() {} }
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mod bar { pub fn f() {} }
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pub fn f() -> bool { true }
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// Items and explicit imports shadow globs.
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fn g() {
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use foo::*;
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use bar::*;
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fn f() -> bool { true }
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let _: bool = f();
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}
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fn h() {
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use foo::*;
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use bar::*;
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use f;
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let _: bool = f();
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}
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// Here, there appears to be shadowing but isn't because of namespaces.
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mod b {
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use foo::*; // This imports `f` in the value namespace.
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use super::b as f; // This imports `f` only in the type namespace,
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fn test() { self::f(); } // so the glob isn't shadowed.
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}
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// Here, there is shadowing in one namespace, but not the other.
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mod c {
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mod test {
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pub fn f() {}
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pub mod f {}
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}
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use self::test::*; // This glob-imports `f` in both namespaces.
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mod f { pub fn f() {} } // This shadows the glob only in the value namespace.
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fn test() {
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self::f(); // Check that the glob-imported value isn't shadowed.
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self::f::f(); // Check that the glob-imported module is shadowed.
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}
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}
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// Unused names can be ambiguous.
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mod d {
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pub use foo::*; // This imports `f` in the value namespace.
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pub use bar::*; // This also imports `f` in the value namespace.
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}
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mod e {
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pub use d::*; // n.b. Since `e::f` is not used, this is not considered to be a use of `d::f`.
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}
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fn main() {}
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