src/tools/clippy/tests/ui/option_as_ref_deref.fixed


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

// run-rustfix

#![allow(unused_imports, clippy::redundant_clone)]
#![warn(clippy::option_as_ref_deref)]

use std::ffi::{CString, OsString};
use std::ops::{Deref, DerefMut};
use std::path::PathBuf;

fn main() {
    let mut opt = Some(String::from("123"));

    let _ = opt.clone().as_deref().map(str::len);

    #[rustfmt::skip]
    let _ = opt.clone().as_deref()
        .map(str::len);

    let _ = opt.as_deref_mut();

    let _ = opt.as_deref();
    let _ = opt.as_deref();
    let _ = opt.as_deref_mut();
    let _ = opt.as_deref_mut();
    let _ = Some(CString::new(vec![]).unwrap()).as_deref();
    let _ = Some(OsString::new()).as_deref();
    let _ = Some(PathBuf::new()).as_deref();
    let _ = Some(Vec::<()>::new()).as_deref();
    let _ = Some(Vec::<()>::new()).as_deref_mut();

    let _ = opt.as_deref();
    let _ = opt.clone().as_deref_mut().map(|x| x.len());

    let vc = vec![String::new()];
    let _ = Some(1_usize).as_ref().map(|x| vc[*x].as_str()); // should not be linted

    let _: Option<&str> = Some(&String::new()).as_ref().map(|x| x.as_str()); // should not be linted

    let _ = opt.as_deref();
    let _ = opt.as_deref_mut();

    // Issue #5927
    let _ = opt.as_deref();
}