Move elided_named_lifetimes into a separate pass
#130150
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cjgillot
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Some changes occurred in src/tools/clippy cc @rust-lang/clippy |
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I'm not sure if it is possible to fix those false negatives at all with this approach |
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The job Click to see the possible cause of the failure (guessed by this bot) |
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☔ The latest upstream changes (presumably #107251) made this pull request unmergeable. Please resolve the merge conflicts. |
cjgillot
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| fn check_trait_item(&mut self, _: &LateContext<'tcx>, item: &'tcx TraitItem<'tcx>) { | ||
| if let TraitItemKind::Const(..) = item.kind { | ||
| self.allow_static = true; | ||
| } | ||
| } | ||
| fn check_trait_item_post(&mut self, _: &LateContext<'tcx>, _: &'tcx TraitItem<'tcx>) { | ||
| self.allow_static = false; | ||
| } | ||
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| fn check_impl_item(&mut self, _: &LateContext<'tcx>, item: &'tcx ImplItem<'tcx>) { | ||
| if let ImplItemKind::Const(..) = item.kind { | ||
| self.allow_static = true; | ||
| } | ||
| } | ||
| fn check_impl_item_post(&mut self, _: &LateContext<'tcx>, _: &'tcx ImplItem<'tcx>) { | ||
| self.allow_static = false; | ||
| } | ||
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| fn check_item(&mut self, _: &LateContext<'tcx>, item: &'tcx Item<'tcx>) { | ||
| if let ItemKind::Const(..) | ItemKind::Static(..) = item.kind { | ||
| self.allow_static = true; | ||
| } | ||
| } | ||
| fn check_item_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Item<'tcx>) { | ||
| self.allow_static = false; | ||
| } |
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I'm not convinced this handles cases like:
const FOO: ConstGeneric<{
const BAR: usize = 5;
BAR
}, &u8> = /* */;
You may need an actual stack.
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I think just storing the id of the outermost item would be enough.
However, I am reluctant to move any further with this PR as I suspect some lifetimes, which are present in AST, are not present in HIR and thus are unlintable with this approach.
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r? @cjgillot
Trying to move forward with #129840 (comment)
Current results, from sad to happy:
ElidedNamedLifetimediagnostic decorator can almost be moved from a hand-rolled impl to a derived one. (Is that a good thing?) The only problem seems to be that you can't slap both#[label]&#[primary_span]on the same field.ElidedNamedLifetimespass. Yay.LateLintPassnow hascheck_trait_item_post&check_lifetime.MissingLifetime.id_for_lint& theLifetimeRes::Static.suppress_elision_warninghacks got removed.