149 lines
2.5 KiB
Rust
149 lines
2.5 KiB
Rust
//@run-rustfix
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#![warn(clippy::all)]
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#![warn(clippy::redundant_pattern_matching)]
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#![allow(
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unused_must_use,
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clippy::needless_bool,
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clippy::match_like_matches_macro,
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clippy::equatable_if_let,
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clippy::if_same_then_else
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)]
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fn main() {
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if let None = None::<()> {}
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if let Some(_) = Some(42) {}
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if let Some(_) = Some(42) {
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foo();
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} else {
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bar();
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}
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while let Some(_) = Some(42) {}
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while let None = Some(42) {}
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while let None = None::<()> {}
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let mut v = vec![1, 2, 3];
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while let Some(_) = v.pop() {
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foo();
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}
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if None::<i32>.is_none() {}
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if Some(42).is_some() {}
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match Some(42) {
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Some(_) => true,
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None => false,
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};
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match None::<()> {
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Some(_) => false,
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None => true,
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};
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let _ = match None::<()> {
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Some(_) => false,
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None => true,
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};
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let opt = Some(false);
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let _ = if let Some(_) = opt { true } else { false };
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issue6067();
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issue10726();
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issue10803();
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let _ = if let Some(_) = gen_opt() {
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1
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} else if let None = gen_opt() {
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2
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} else {
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3
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};
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if let Some(..) = gen_opt() {}
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}
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fn gen_opt() -> Option<()> {
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None
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}
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fn foo() {}
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fn bar() {}
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// Methods that are unstable const should not be suggested within a const context, see issue #5697.
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// However, in Rust 1.48.0 the methods `is_some` and `is_none` of `Option` were stabilized as const,
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// so the following should be linted.
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const fn issue6067() {
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if let Some(_) = Some(42) {}
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if let None = None::<()> {}
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while let Some(_) = Some(42) {}
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while let None = None::<()> {}
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match Some(42) {
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Some(_) => true,
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None => false,
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};
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match None::<()> {
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Some(_) => false,
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None => true,
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};
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}
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#[allow(clippy::deref_addrof, dead_code, clippy::needless_borrow)]
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fn issue7921() {
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if let None = *(&None::<()>) {}
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if let None = *&None::<()> {}
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}
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fn issue10726() {
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let x = Some(42);
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match x {
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Some(_) => true,
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_ => false,
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};
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match x {
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None => true,
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_ => false,
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};
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match x {
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Some(_) => false,
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_ => true,
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};
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match x {
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None => false,
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_ => true,
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};
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// Don't lint
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match x {
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Some(21) => true,
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_ => false,
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};
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}
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fn issue10803() {
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let x = Some(42);
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let _ = matches!(x, Some(_));
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let _ = matches!(x, None);
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// Don't lint
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let _ = matches!(x, Some(16));
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}
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