mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-18 00:53:31 +00:00
50 lines
1.5 KiB
Rust
50 lines
1.5 KiB
Rust
// 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.
|
|
|
|
// compile-pass
|
|
|
|
// The output for humans should just highlight the whole span without showing
|
|
// the suggested replacement, but we also want to test that suggested
|
|
// replacement only removes one set of parentheses, rather than naïvely
|
|
// stripping away any starting or ending parenthesis characters—hence this
|
|
// test of the JSON error format.
|
|
|
|
#![deny(clippy::unused_unit)]
|
|
#![allow(clippy::needless_return)]
|
|
|
|
struct Unitter;
|
|
impl Unitter {
|
|
// try to disorient the lint with multiple unit returns and newlines
|
|
pub fn get_unit<F: Fn() -> (), G>(&self, f: F, _g: G) ->
|
|
()
|
|
where G: Fn() -> () {
|
|
let _y: &Fn() -> () = &f;
|
|
(); // this should not lint, as it's not in return type position
|
|
}
|
|
}
|
|
|
|
impl Into<()> for Unitter {
|
|
#[rustfmt::skip]
|
|
fn into(self) -> () {
|
|
()
|
|
}
|
|
}
|
|
|
|
fn return_unit() -> () { () }
|
|
|
|
fn main() {
|
|
let u = Unitter;
|
|
assert_eq!(u.get_unit(|| {}, return_unit), u.into());
|
|
return_unit();
|
|
loop {
|
|
break();
|
|
}
|
|
return();
|
|
}
|