mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-09-22 07:32:00 +00:00
50 lines
1.5 KiB
Rust
50 lines
1.5 KiB
Rust
// Copyright 2017 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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// compile-pass
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// The output for humans should just highlight the whole span without showing
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// the suggested replacement, but we also want to test that suggested
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// replacement only removes one set of parentheses, rather than naïvely
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// stripping away any starting or ending parenthesis characters—hence this
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// test of the JSON error format.
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#![deny(clippy::unused_unit)]
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#![allow(clippy::needless_return)]
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struct Unitter;
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impl Unitter {
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// try to disorient the lint with multiple unit returns and newlines
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pub fn get_unit<F: Fn() -> (), G>(&self, f: F, _g: G) ->
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()
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where G: Fn() -> () {
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let _y: &Fn() -> () = &f;
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(); // this should not lint, as it's not in return type position
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}
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}
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impl Into<()> for Unitter {
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#[rustfmt::skip]
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fn into(self) -> () {
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()
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}
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}
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fn return_unit() -> () { () }
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fn main() {
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let u = Unitter;
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assert_eq!(u.get_unit(|| {}, return_unit), u.into());
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return_unit();
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loop {
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break();
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}
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return();
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}
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