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Commit | Line | Data |
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fe692bf9 | 1 | #![allow(unused, clippy::redundant_clone, clippy::useless_vec)] |
f20569fa XL |
2 | #![warn(clippy::option_as_ref_deref)] |
3 | ||
4 | use std::ffi::{CString, OsString}; | |
5 | use std::ops::{Deref, DerefMut}; | |
6 | use std::path::PathBuf; | |
7 | ||
8 | fn main() { | |
9 | let mut opt = Some(String::from("123")); | |
10 | ||
11 | let _ = opt.clone().as_ref().map(Deref::deref).map(str::len); | |
12 | ||
13 | #[rustfmt::skip] | |
14 | let _ = opt.clone() | |
15 | .as_ref().map( | |
16 | Deref::deref | |
17 | ) | |
18 | .map(str::len); | |
19 | ||
20 | let _ = opt.as_mut().map(DerefMut::deref_mut); | |
21 | ||
22 | let _ = opt.as_ref().map(String::as_str); | |
23 | let _ = opt.as_ref().map(|x| x.as_str()); | |
24 | let _ = opt.as_mut().map(String::as_mut_str); | |
25 | let _ = opt.as_mut().map(|x| x.as_mut_str()); | |
26 | let _ = Some(CString::new(vec![]).unwrap()).as_ref().map(CString::as_c_str); | |
27 | let _ = Some(OsString::new()).as_ref().map(OsString::as_os_str); | |
28 | let _ = Some(PathBuf::new()).as_ref().map(PathBuf::as_path); | |
29 | let _ = Some(Vec::<()>::new()).as_ref().map(Vec::as_slice); | |
30 | let _ = Some(Vec::<()>::new()).as_mut().map(Vec::as_mut_slice); | |
31 | ||
32 | let _ = opt.as_ref().map(|x| x.deref()); | |
33 | let _ = opt.clone().as_mut().map(|x| x.deref_mut()).map(|x| x.len()); | |
34 | ||
35 | let vc = vec![String::new()]; | |
36 | let _ = Some(1_usize).as_ref().map(|x| vc[*x].as_str()); // should not be linted | |
37 | ||
38 | let _: Option<&str> = Some(&String::new()).as_ref().map(|x| x.as_str()); // should not be linted | |
39 | ||
40 | let _ = opt.as_ref().map(|x| &**x); | |
41 | let _ = opt.as_mut().map(|x| &mut **x); | |
42 | ||
43 | // Issue #5927 | |
44 | let _ = opt.as_ref().map(std::ops::Deref::deref); | |
45 | } | |
2b03887a | 46 | |
487cf647 | 47 | #[clippy::msrv = "1.39"] |
2b03887a | 48 | fn msrv_1_39() { |
2b03887a FG |
49 | let opt = Some(String::from("123")); |
50 | let _ = opt.as_ref().map(String::as_str); | |
51 | } | |
52 | ||
487cf647 | 53 | #[clippy::msrv = "1.40"] |
2b03887a | 54 | fn msrv_1_40() { |
2b03887a FG |
55 | let opt = Some(String::from("123")); |
56 | let _ = opt.as_ref().map(String::as_str); | |
57 | } |