129 lines
2.5 KiB
Rust
129 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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clippy::unit_arg,
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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::unnecessary_wraps,
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deprecated
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)]
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fn main() {
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let result: Result<usize, usize> = Err(5);
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if let Ok(_) = &result {}
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if let Ok(_) = Ok::<i32, i32>(42) {}
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if let Err(_) = Err::<i32, i32>(42) {}
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while let Ok(_) = Ok::<i32, i32>(10) {}
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while let Err(_) = Ok::<i32, i32>(10) {}
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if Ok::<i32, i32>(42).is_ok() {}
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if Err::<i32, i32>(42).is_err() {}
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if let Ok(x) = Ok::<i32, i32>(42) {
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println!("{}", x);
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}
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match Ok::<i32, i32>(42) {
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Ok(_) => true,
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Err(_) => false,
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};
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match Ok::<i32, i32>(42) {
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Ok(_) => false,
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Err(_) => true,
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};
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match Err::<i32, i32>(42) {
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Ok(_) => false,
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Err(_) => true,
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};
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match Err::<i32, i32>(42) {
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Ok(_) => true,
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Err(_) => false,
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};
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let _ = if let Ok(_) = Ok::<usize, ()>(4) { true } else { false };
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issue5504();
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issue6067();
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issue6065();
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let _ = if let Ok(_) = gen_res() {
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1
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} else if let Err(_) = gen_res() {
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2
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} else {
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3
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};
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}
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fn gen_res() -> Result<(), ()> {
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Ok(())
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}
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macro_rules! m {
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() => {
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Some(42u32)
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};
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}
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fn issue5504() {
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fn result_opt() -> Result<Option<i32>, i32> {
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Err(42)
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}
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fn try_result_opt() -> Result<i32, i32> {
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while let Some(_) = r#try!(result_opt()) {}
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if let Some(_) = r#try!(result_opt()) {}
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Ok(42)
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}
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try_result_opt();
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if let Some(_) = m!() {}
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while let Some(_) = m!() {}
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}
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fn issue6065() {
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macro_rules! if_let_in_macro {
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($pat:pat, $x:expr) => {
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if let Some($pat) = $x {}
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};
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}
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// shouldn't be linted
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if_let_in_macro!(_, Some(42));
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}
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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_ok` and `is_err` of `Result` 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 Ok(_) = Ok::<i32, i32>(42) {}
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if let Err(_) = Err::<i32, i32>(42) {}
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while let Ok(_) = Ok::<i32, i32>(10) {}
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while let Err(_) = Ok::<i32, i32>(10) {}
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match Ok::<i32, i32>(42) {
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Ok(_) => true,
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Err(_) => false,
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};
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match Err::<i32, i32>(42) {
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Ok(_) => false,
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Err(_) => true,
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};
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}
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