99 lines
2.0 KiB
Rust
99 lines
2.0 KiB
Rust
#![allow(clippy::redundant_clone, clippy::unnecessary_operation)]
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#![warn(clippy::manual_non_exhaustive, clippy::borrow_as_ptr, clippy::manual_bits)]
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use std::mem::{size_of, size_of_val};
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use std::ops::Deref;
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mod enums {
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enum E {
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A,
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B,
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#[doc(hidden)]
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_C,
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}
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// user forgot to remove the marker
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#[non_exhaustive]
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enum Ep {
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A,
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B,
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#[doc(hidden)]
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_C,
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}
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}
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fn option_as_ref_deref() {
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let mut opt = Some(String::from("123"));
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let _ = opt.as_ref().map(String::as_str);
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let _ = opt.as_ref().map(|x| x.as_str());
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let _ = opt.as_mut().map(String::as_mut_str);
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let _ = opt.as_mut().map(|x| x.as_mut_str());
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}
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fn match_like_matches() {
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let _y = match Some(5) {
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Some(0) => true,
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_ => false,
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};
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}
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fn match_same_arms() {
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match (1, 2, 3) {
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(1, .., 3) => 42,
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(.., 3) => 42,
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_ => 0,
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};
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}
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fn match_same_arms2() {
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let _ = match Some(42) {
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Some(_) => 24,
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None => 24,
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};
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}
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fn manual_strip_msrv() {
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let s = "hello, world!";
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if s.starts_with("hello, ") {
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assert_eq!(s["hello, ".len()..].to_uppercase(), "WORLD!");
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}
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}
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fn check_index_refutable_slice() {
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// This shouldn't trigger `clippy::index_refutable_slice` as the suggestion
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// would only be valid from 1.42.0 onward
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let slice: Option<&[u32]> = Some(&[1]);
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if let Some(slice) = slice {
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println!("{}", slice[0]);
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}
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}
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fn map_clone_suggest_copied() {
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// This should still trigger the lint but suggest `cloned()` instead of `copied()`
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let _: Option<u64> = Some(&16).cloned();
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}
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fn borrow_as_ptr() {
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let val = 1;
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let _p = &val as *const i32;
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let mut val_mut = 1;
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let _p_mut = &mut val_mut as *mut i32;
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}
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fn manual_bits() {
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size_of::<i8>() * 8;
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size_of_val(&0u32) * 8;
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}
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fn main() {
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option_as_ref_deref();
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match_like_matches();
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match_same_arms();
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match_same_arms2();
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manual_strip_msrv();
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check_index_refutable_slice();
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borrow_as_ptr();
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}
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