105 lines
3.4 KiB
Rust
105 lines
3.4 KiB
Rust
// run-rustfix
|
|
#![warn(clippy::unnecessary_lazy_evaluation)]
|
|
#![allow(clippy::redundant_closure)]
|
|
#![allow(clippy::bind_instead_of_map)]
|
|
|
|
struct Deep(Option<u32>);
|
|
|
|
#[derive(Copy, Clone)]
|
|
struct SomeStruct {
|
|
some_field: u32,
|
|
}
|
|
|
|
impl SomeStruct {
|
|
fn return_some_field(&self) -> u32 {
|
|
self.some_field
|
|
}
|
|
}
|
|
|
|
fn some_call<T: Default>() -> T {
|
|
T::default()
|
|
}
|
|
|
|
fn main() {
|
|
let astronomers_pi = 10;
|
|
let ext_str = SomeStruct { some_field: 10 };
|
|
|
|
// Should lint - Option
|
|
let mut opt = Some(42);
|
|
let ext_opt = Some(42);
|
|
let _ = opt.unwrap_or(2);
|
|
let _ = opt.unwrap_or(astronomers_pi);
|
|
let _ = opt.unwrap_or(ext_str.some_field);
|
|
let _ = opt.and(ext_opt);
|
|
let _ = opt.or(ext_opt);
|
|
let _ = opt.or(None);
|
|
let _ = opt.get_or_insert(2);
|
|
let _ = opt.ok_or(2);
|
|
|
|
// Cases when unwrap is not called on a simple variable
|
|
let _ = Some(10).unwrap_or(2);
|
|
let _ = Some(10).and(ext_opt);
|
|
let _: Option<u32> = None.or(ext_opt);
|
|
let _ = None.get_or_insert(2);
|
|
let _: Result<u32, u32> = None.ok_or(2);
|
|
let _: Option<u32> = None.or(None);
|
|
|
|
let mut deep = Deep(Some(42));
|
|
let _ = deep.0.unwrap_or(2);
|
|
let _ = deep.0.and(ext_opt);
|
|
let _ = deep.0.or(None);
|
|
let _ = deep.0.get_or_insert(2);
|
|
let _ = deep.0.ok_or(2);
|
|
|
|
// Should not lint - Option
|
|
let _ = opt.unwrap_or_else(|| ext_str.return_some_field());
|
|
let _ = opt.or_else(some_call);
|
|
let _ = opt.or_else(|| some_call());
|
|
let _: Result<u32, u32> = opt.ok_or_else(|| some_call());
|
|
let _: Result<u32, u32> = opt.ok_or_else(some_call);
|
|
let _ = deep.0.get_or_insert_with(|| some_call());
|
|
let _ = deep.0.or_else(some_call);
|
|
let _ = deep.0.or_else(|| some_call());
|
|
|
|
// These are handled by bind_instead_of_map
|
|
let _: Option<u32> = None.or_else(|| Some(3));
|
|
let _ = deep.0.or_else(|| Some(3));
|
|
let _ = opt.or_else(|| Some(3));
|
|
|
|
// Should lint - Result
|
|
let res: Result<u32, u32> = Err(5);
|
|
let res2: Result<u32, SomeStruct> = Err(SomeStruct { some_field: 5 });
|
|
|
|
let _ = res2.unwrap_or(2);
|
|
let _ = res2.unwrap_or(astronomers_pi);
|
|
let _ = res2.unwrap_or(ext_str.some_field);
|
|
|
|
// Should not lint - Result
|
|
let _ = res.unwrap_or_else(|err| err);
|
|
let _ = res2.unwrap_or_else(|err| err.some_field);
|
|
let _ = res2.unwrap_or_else(|err| err.return_some_field());
|
|
let _ = res2.unwrap_or_else(|_| ext_str.return_some_field());
|
|
|
|
let _: Result<u32, u32> = res.and_then(|x| Ok(x));
|
|
let _: Result<u32, u32> = res.and_then(|x| Err(x));
|
|
|
|
let _: Result<u32, u32> = res.or_else(|err| Ok(err));
|
|
let _: Result<u32, u32> = res.or_else(|err| Err(err));
|
|
|
|
// These are handled by bind_instead_of_map
|
|
let _: Result<u32, u32> = res.and_then(|_| Ok(2));
|
|
let _: Result<u32, u32> = res.and_then(|_| Ok(astronomers_pi));
|
|
let _: Result<u32, u32> = res.and_then(|_| Ok(ext_str.some_field));
|
|
|
|
let _: Result<u32, u32> = res.and_then(|_| Err(2));
|
|
let _: Result<u32, u32> = res.and_then(|_| Err(astronomers_pi));
|
|
let _: Result<u32, u32> = res.and_then(|_| Err(ext_str.some_field));
|
|
|
|
let _: Result<u32, u32> = res.or_else(|_| Ok(2));
|
|
let _: Result<u32, u32> = res.or_else(|_| Ok(astronomers_pi));
|
|
let _: Result<u32, u32> = res.or_else(|_| Ok(ext_str.some_field));
|
|
|
|
let _: Result<u32, u32> = res.or_else(|_| Err(2));
|
|
let _: Result<u32, u32> = res.or_else(|_| Err(astronomers_pi));
|
|
let _: Result<u32, u32> = res.or_else(|_| Err(ext_str.some_field));
|
|
}
|