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f20569fa XL |
1 | // run-rustfix |
2 | ||
3 | #![allow(unused_imports, clippy::redundant_clone)] | |
4 | #![warn(clippy::option_as_ref_deref)] | |
5 | ||
6 | use std::ffi::{CString, OsString}; | |
7 | use std::ops::{Deref, DerefMut}; | |
8 | use std::path::PathBuf; | |
9 | ||
10 | fn main() { | |
11 | let mut opt = Some(String::from("123")); | |
12 | ||
13 | let _ = opt.clone().as_ref().map(Deref::deref).map(str::len); | |
14 | ||
15 | #[rustfmt::skip] | |
16 | let _ = opt.clone() | |
17 | .as_ref().map( | |
18 | Deref::deref | |
19 | ) | |
20 | .map(str::len); | |
21 | ||
22 | let _ = opt.as_mut().map(DerefMut::deref_mut); | |
23 | ||
24 | let _ = opt.as_ref().map(String::as_str); | |
25 | let _ = opt.as_ref().map(|x| x.as_str()); | |
26 | let _ = opt.as_mut().map(String::as_mut_str); | |
27 | let _ = opt.as_mut().map(|x| x.as_mut_str()); | |
28 | let _ = Some(CString::new(vec![]).unwrap()).as_ref().map(CString::as_c_str); | |
29 | let _ = Some(OsString::new()).as_ref().map(OsString::as_os_str); | |
30 | let _ = Some(PathBuf::new()).as_ref().map(PathBuf::as_path); | |
31 | let _ = Some(Vec::<()>::new()).as_ref().map(Vec::as_slice); | |
32 | let _ = Some(Vec::<()>::new()).as_mut().map(Vec::as_mut_slice); | |
33 | ||
34 | let _ = opt.as_ref().map(|x| x.deref()); | |
35 | let _ = opt.clone().as_mut().map(|x| x.deref_mut()).map(|x| x.len()); | |
36 | ||
37 | let vc = vec![String::new()]; | |
38 | let _ = Some(1_usize).as_ref().map(|x| vc[*x].as_str()); // should not be linted | |
39 | ||
40 | let _: Option<&str> = Some(&String::new()).as_ref().map(|x| x.as_str()); // should not be linted | |
41 | ||
42 | let _ = opt.as_ref().map(|x| &**x); | |
43 | let _ = opt.as_mut().map(|x| &mut **x); | |
44 | ||
45 | // Issue #5927 | |
46 | let _ = opt.as_ref().map(std::ops::Deref::deref); | |
47 | } |