53 lines
1.4 KiB
Rust
53 lines
1.4 KiB
Rust
// run-rustfix
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#![warn(clippy::or_then_unwrap)]
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#![allow(clippy::map_identity)]
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struct SomeStruct;
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impl SomeStruct {
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fn or(self, _: Option<Self>) -> Self {
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self
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}
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fn unwrap(&self) {}
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}
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struct SomeOtherStruct;
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impl SomeOtherStruct {
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fn or(self) -> Self {
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self
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}
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fn unwrap(&self) {}
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}
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fn main() {
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let option: Option<&str> = None;
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let _ = option.unwrap_or("fallback"); // should trigger lint
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let result: Result<&str, &str> = Err("Error");
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let _ = result.unwrap_or("fallback"); // should trigger lint
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// as part of a method chain
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let option: Option<&str> = None;
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let _ = option.map(|v| v).unwrap_or("fallback").to_string().chars(); // should trigger lint
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// Not Option/Result
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let instance = SomeStruct {};
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let _ = instance.or(Some(SomeStruct {})).unwrap(); // should not trigger lint
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// or takes no argument
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let instance = SomeOtherStruct {};
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let _ = instance.or().unwrap(); // should not trigger lint and should not panic
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// None in or
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let option: Option<&str> = None;
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let _ = option.or(None).unwrap(); // should not trigger lint
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// Not Err in or
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let result: Result<&str, &str> = Err("Error");
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let _ = result.or::<&str>(Err("Other Error")).unwrap(); // should not trigger lint
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// other function between
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let option: Option<&str> = None;
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let _ = option.or(Some("fallback")).map(|v| v).unwrap(); // should not trigger lint
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}
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