rust/tests/ui/manual_non_exhaustive_enum.rs

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#![feature(lint_reasons)]
#![warn(clippy::manual_non_exhaustive)]
#![allow(unused)]
//@no-rustfix
enum E {
//~^ ERROR: this seems like a manual implementation of the non-exhaustive pattern
A,
B,
#[doc(hidden)]
_C,
}
// user forgot to remove the marker
#[non_exhaustive]
enum Ep {
//~^ ERROR: this seems like a manual implementation of the non-exhaustive pattern
A,
B,
#[doc(hidden)]
_C,
}
// marker variant does not have doc hidden attribute, should be ignored
enum NoDocHidden {
A,
B,
_C,
}
// name of variant with doc hidden does not start with underscore, should be ignored
enum NoUnderscore {
A,
B,
#[doc(hidden)]
C,
}
// variant with doc hidden is not unit, should be ignored
enum NotUnit {
A,
B,
#[doc(hidden)]
_C(bool),
}
// variant with doc hidden is the only one, should be ignored
enum OnlyMarker {
#[doc(hidden)]
_A,
}
// variant with multiple markers, should be ignored
enum MultipleMarkers {
A,
#[doc(hidden)]
_B,
#[doc(hidden)]
_C,
}
// already non_exhaustive and no markers, should be ignored
#[non_exhaustive]
enum NonExhaustive {
A,
B,
}
// marked is used, don't lint
enum UsedHidden {
#[doc(hidden)]
_A,
B,
C,
}
fn foo(x: &mut UsedHidden) {
if matches!(*x, UsedHidden::B) {
*x = UsedHidden::_A;
}
}
#[expect(clippy::manual_non_exhaustive)]
enum ExpectLint {
A,
B,
#[doc(hidden)]
_C,
}
fn main() {}