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errors: introduce DecorateLint

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Add a new trait to be generated by diagnostic derives which uses a
`LintDiagnosticBuilder`.

Signed-off-by: David Wood <david.wood@huawei.com>
This commit is contained in:
David Wood 2022-06-29 16:07:46 +01:00
parent 2874f09534
commit 540eaf985d
6 changed files with 58 additions and 6 deletions
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2
compiler/rustc_lint/src/internal.rs
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@ -414,7 +414,7 @@ impl LateLintPass<'_> for Diagnostics {
let Impl { of_trait: Some(of_trait), .. } = impl_ &&
let Some(def_id) = of_trait.trait_def_id() &&
let Some(name) = cx.tcx.get_diagnostic_name(def_id) &&
matches!(name, sym::SessionDiagnostic | sym::AddSubdiagnostic)
matches!(name, sym::SessionDiagnostic | sym::AddSubdiagnostic | sym::DecorateLint)
{
found_impl = true;
break;