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//@run-rustfix
#![warn(clippy::manual_filter)]
#![allow(unused_variables, dead_code)]
fn main() {
Some(0).filter(|&x| x <= 0);
Some(1).filter(|&x| x <= 0);
Some(2).filter(|&x| x <= 0);
Some(3).filter(|&x| x > 0);
let y = Some(4);
y.filter(|&x| x <= 0);
Some(5).filter(|&x| x > 0);
Some(6).as_ref().filter(|&x| x > &0);
let external_cond = true;
Some(String::new()).filter(|x| external_cond);
Some(7).filter(|&x| external_cond);
Some(8).filter(|&x| x != 0);
Some(9).filter(|&x| x > 10 && x < 100);
const fn f1() {
// Don't lint, `.filter` is not const
match Some(10) {
Some(x) => {
if x > 10 && x < 100 {
Some(x)
} else {
None
}
},
None => None,
};
}
#[allow(clippy::blocks_in_if_conditions)]
Some(11).filter(|&x| {
println!("foo");
x > 10 && x < 100
});
match Some(12) {
// Don't Lint, statement is lost by `.filter`
Some(x) => {
if x > 10 && x < 100 {
println!("foo");
Some(x)
} else {
None
}
},
None => None,
};
match Some(13) {
// Don't Lint, because of `None => Some(1)`
Some(x) => {
if x > 10 && x < 100 {
println!("foo");
Some(x)
} else {
None
}
},
None => Some(1),
};
unsafe fn f(x: u32) -> bool {
true
}
let _ = Some(14).filter(|&x| unsafe { f(x) });
let _ = Some(15).filter(|&x| unsafe { f(x) });
#[allow(clippy::redundant_pattern_matching)]
if let Some(_) = Some(16) {
Some(16)
} else { Some(16).filter(|&x| x % 2 == 0) };
match Some((17, 17)) {
// Not linted for now could be
Some((x, y)) => {
if y != x {
Some((x, y))
} else {
None
}
},
None => None,
};
struct NamedTuple {
pub x: u8,
pub y: (i32, u32),
}
match Some(NamedTuple {
// Not linted for now could be
x: 17,
y: (18, 19),
}) {
Some(NamedTuple { x, y }) => {
if y.1 != x as u32 {
Some(NamedTuple { x, y })
} else {
None
}
},
None => None,
};
match Some(20) {
// Don't Lint, because `Some(3*x)` is not `None`
None => None,
Some(x) => {
if x > 0 {
Some(3 * x)
} else {
Some(x)
}
},
};
// Don't lint: https://github.com/rust-lang/rust-clippy/issues/10088
let result = if let Some(a) = maybe_some() {
if let Some(b) = maybe_some() {
Some(a + b)
} else {
Some(a)
}
} else {
None
};
let allowed_integers = vec![3, 4, 5, 6];
// Don't lint, since there's a side effect in the else branch
match Some(21) {
Some(x) => {
if allowed_integers.contains(&x) {
Some(x)
} else {
println!("Invalid integer: {x:?}");
None
}
},
None => None,
};
}
fn maybe_some() -> Option<u32> {
Some(0)
}
|
