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#![warn(clippy::manual_map)]
#![allow(
clippy::no_effect,
clippy::map_identity,
clippy::unit_arg,
clippy::match_ref_pats,
clippy::redundant_pattern_matching,
clippy::unnecessary_map_on_constructor,
for_loops_over_fallibles,
dead_code
)]
fn main() {
Some(0).map(|_| 2);
Some(0).map(|x| x + 1);
Some("").map(|x| x.is_empty());
Some(0).map(|x| !x);
#[rustfmt::skip]
Some(0).map(std::convert::identity);
Some(&String::new()).map(|x| str::len(x));
match Some(0) {
Some(x) if false => Some(x + 1),
_ => None,
};
Some([0, 1]).as_ref().map(|x| x[0]);
Some(0).map(|x| x * 2);
Some(String::new()).as_ref().map(|x| x.is_empty());
Some(String::new()).as_ref().map(|x| x.len());
Some(0).map(|x| x + x);
#[warn(clippy::option_map_unit_fn)]
match &mut Some(String::new()) {
Some(x) => Some(x.push_str("")),
None => None,
};
#[allow(clippy::option_map_unit_fn)]
{
Some(String::new()).as_mut().map(|x| x.push_str(""));
}
Some(String::new()).as_ref().map(|x| x.len());
Some(String::new()).as_ref().map(|x| x.is_empty());
Some((0, 1, 2)).map(|(x, y, z)| x + y + z);
Some([1, 2, 3]).map(|[first, ..]| first);
Some((String::new(), "test")).as_ref().map(|(x, y)| (y, x));
match Some((String::new(), 0)) {
Some((ref x, y)) => Some((y, x)),
None => None,
};
match Some(Some(0)) {
Some(Some(_)) | Some(None) => Some(0),
None => None,
};
match Some(Some((0, 1))) {
Some(Some((x, 1))) => Some(x),
_ => None,
};
// #6795
fn f1() -> Result<(), ()> {
let _ = match Some(Ok(())) {
Some(x) => Some(x?),
None => None,
};
Ok(())
}
for &x in Some(Some(true)).iter() {
let _ = match x {
Some(x) => Some(if x { continue } else { x }),
None => None,
};
}
// #6797
let x1 = (Some(String::new()), 0);
let x2 = x1.0;
match x2 {
Some(x) => Some((x, x1.1)),
None => None,
};
struct S1 {
x: Option<String>,
y: u32,
}
impl S1 {
fn f(self) -> Option<(String, u32)> {
match self.x {
Some(x) => Some((x, self.y)),
None => None,
}
}
}
// #6811
Some(0).map(|x| vec![x]);
option_env!("").map(String::from);
// #6819
async fn f2(x: u32) -> u32 {
x
}
async fn f3() {
match Some(0) {
Some(x) => Some(f2(x).await),
None => None,
};
}
// #6847
if let Some(_) = Some(0) {
Some(0)
} else { Some(0).map(|x| x + 1) };
if true {
Some(0)
} else { Some(0).map(|x| x + 1) };
// #6967
const fn f4() {
match Some(0) {
Some(x) => Some(x + 1),
None => None,
};
}
// #7077
let s = &String::new();
#[allow(clippy::needless_match)]
let _: Option<&str> = match Some(s) {
Some(s) => Some(s),
None => None,
};
}
|
