// run-rustfix #![warn(clippy::all)] #![warn(clippy::redundant_pattern_matching)] #![allow( clippy::unit_arg, unused_must_use, clippy::needless_bool, clippy::match_like_matches_macro, deprecated )] fn main() { if None::<()>.is_none() {} if Some(42).is_some() {} if Some(42).is_some() { foo(); } else { bar(); } while Some(42).is_some() {} while Some(42).is_none() {} while None::<()>.is_none() {} let mut v = vec![1, 2, 3]; while v.pop().is_some() { foo(); } if None::<i32>.is_none() {} if Some(42).is_some() {} Some(42).is_some(); None::<()>.is_none(); let _ = None::<()>.is_none(); let opt = Some(false); let x = if opt.is_some() { true } else { false }; takes_bool(x); issue6067(); let _ = if gen_opt().is_some() { 1 } else if gen_opt().is_none() { 2 } else { 3 }; } fn gen_opt() -> Option<()> { None } fn takes_bool(_: bool) {} fn foo() {} fn bar() {} // Methods that are unstable const should not be suggested within a const context, see issue #5697. // However, in Rust 1.48.0 the methods `is_some` and `is_none` of `Option` were stabilized as const, // so the following should be linted. const fn issue6067() { if Some(42).is_some() {} if None::<()>.is_none() {} while Some(42).is_some() {} while None::<()>.is_none() {} Some(42).is_some(); None::<()>.is_none(); }