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print cause chain in mutable_key_type

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This commit is contained in:
y21 2024-10-03 19:29:36 +00:00
parent db1bda3df1
commit 19d1358b31
3 changed files with 98 additions and 23 deletions
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13
clippy_lints/src/mut_key.rs
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@ -1,9 +1,10 @@
use clippy_config::Conf;
use clippy_utils::diagnostics::span_lint;
use clippy_utils::diagnostics::span_lint_and_then;
use clippy_utils::trait_ref_of_method;
use clippy_utils::ty::InteriorMut;
use rustc_hir as hir;
use rustc_lint::{LateContext, LateLintPass};
use rustc_middle::ty::print::with_forced_trimmed_paths;
use rustc_middle::ty::{self, Ty, TyCtxt};
use rustc_session::impl_lint_pass;
use rustc_span::Span;
@ -132,8 +133,14 @@ impl<'tcx> MutableKeyType<'tcx> {
)
{
let subst_ty = args.type_at(0);
if self.interior_mut.is_interior_mut_ty(cx, subst_ty) {
span_lint(cx, MUTABLE_KEY_TYPE, span, "mutable key type");
if let Some(chain) = self.interior_mut.interior_mut_ty_chain(cx, subst_ty) {
span_lint_and_then(cx, MUTABLE_KEY_TYPE, span, "mutable key type", |diag| {
for ty in chain.iter().rev() {
diag.note(with_forced_trimmed_paths!(format!(
"... because it contains `{ty}`, which has interior mutability"
)));
}
});
}
}
}