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errors: implement IntoDiagnosticArg for &T

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Implement `IntoDiagnosticArg` for `&'a T` when `T` implements
`IntoDiagnosticArg` and `Clone`. Makes it easier to write diagnostic
structs that borrow something which implements `IntoDiagnosticArg`.

Signed-off-by: David Wood <david.wood@huawei.com>
This commit is contained in:
David Wood 2022-08-30 17:00:20 +01:00
parent 59cc5e5d59
commit f7b42102e6
3 changed files with 13 additions and 13 deletions
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6
compiler/rustc_borrowck/src/diagnostics/region_name.rs
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@ -187,6 +187,12 @@ impl Display for RegionName {
}
}
impl rustc_errors::IntoDiagnosticArg for RegionName {
fn into_diagnostic_arg(self) -> rustc_errors::DiagnosticArgValue<'static> {
self.to_string().into_diagnostic_arg()
}
}
impl<'tcx> MirBorrowckCtxt<'_, 'tcx> {
pub(crate) fn mir_def_id(&self) -> hir::def_id::LocalDefId {
self.body.source.def_id().expect_local()