rust/tests/ui/option_if_let_else.fixed

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// run-rustfix
#![warn(clippy::option_if_let_else)]
fn bad1(string: Option<&str>) -> (bool, &str) {
string.map_or((false, "hello"), |x| (true, x))
}
fn else_if_option(string: Option<&str>) -> Option<(bool, &str)> {
if string.is_none() {
None
} else { string.map_or(Some((false, "")), |x| Some((true, x))) }
}
fn unop_bad(string: &Option<&str>, mut num: Option<i32>) {
let _ = string.map_or(0, |s| s.len());
let _ = num.as_ref().map_or(&0, |s| s);
let _ = num.as_mut().map_or(&mut 0, |s| {
*s += 1;
s
});
let _ = num.as_ref().map_or(&0, |s| s);
let _ = num.map_or(0, |mut s| {
s += 1;
s
});
let _ = num.as_mut().map_or(&mut 0, |s| {
*s += 1;
s
});
}
fn longer_body(arg: Option<u32>) -> u32 {
arg.map_or(13, |x| {
let y = x * x;
y * y
})
}
fn test_map_or_else(arg: Option<u32>) {
let _ = arg.map_or_else(|| {
let mut y = 1;
y = (y + 2 / y) / 2;
y = (y + 2 / y) / 2;
y
}, |x| x * x * x * x);
}
fn negative_tests(arg: Option<u32>) -> u32 {
let _ = if let Some(13) = arg { "unlucky" } else { "lucky" };
for _ in 0..10 {
let _ = if let Some(x) = arg {
x
} else {
continue;
};
}
let _ = if let Some(x) = arg {
return x;
} else {
5
};
7
}
fn main() {
let optional = Some(5);
let _ = optional.map_or(5, |x| x + 2);
let _ = bad1(None);
let _ = else_if_option(None);
unop_bad(&None, None);
let _ = longer_body(None);
test_map_or_else(None);
let _ = negative_tests(None);
}