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