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