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Improve interaction between macros 2.0 and
macro_rules!
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// Copyright 2017 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. | ||
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// ignore-pretty pretty-printing is unhygienic | ||
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#[macro_export] | ||
macro_rules! m { | ||
() => { | ||
fn f() {} // (2) | ||
g(); // (1) | ||
} | ||
} |
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// Copyright 2017 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. | ||
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// ignore-pretty pretty-printing is unhygienic | ||
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// aux-build:legacy_interaction.rs | ||
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#![feature(decl_macro)] | ||
#[allow(unused)] | ||
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extern crate legacy_interaction; | ||
// ^ defines | ||
// ```rust | ||
// macro_rules! m { | ||
// () => { | ||
// fn f() // (1) | ||
// g() // (2) | ||
// } | ||
// } | ||
// ```rust | ||
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mod def_site { | ||
// Unless this macro opts out of hygiene, it should resolve the same wherever it is invoked. | ||
pub macro m2() { | ||
::legacy_interaction::m!(); | ||
f(); // This should resolve to (1) | ||
fn g() {} // We want (2) resolve to this, not to (4) | ||
} | ||
} | ||
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mod use_site { | ||
fn test() { | ||
fn f() -> bool { true } // (3) | ||
fn g() -> bool { true } // (4) | ||
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::def_site::m2!(); | ||
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let _: bool = f(); // This should resolve to (3) | ||
let _: bool = g(); // This should resolve to (4) | ||
} | ||
} | ||
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fn main() {} |