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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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14
compiler/rustc_borrowck/src/session_diagnostics.rs
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@ -1,4 +1,4 @@
use rustc_errors::{IntoDiagnosticArg, MultiSpan};
use rustc_errors::MultiSpan;
use rustc_macros::{Diagnostic, LintDiagnostic, Subdiagnostic};
use rustc_middle::ty::{GenericArg, Ty};
use rustc_span::Span;
@ -128,18 +128,6 @@ pub(crate) enum LifetimeReturnCategoryErr<'a> {
},
}
impl IntoDiagnosticArg for &RegionName {
fn into_diagnostic_arg(self) -> rustc_errors::DiagnosticArgValue<'static> {
format!("{}", self).into_diagnostic_arg()
}
}
impl IntoDiagnosticArg for RegionName {
fn into_diagnostic_arg(self) -> rustc_errors::DiagnosticArgValue<'static> {
format!("{}", self).into_diagnostic_arg()
}
}
#[derive(Subdiagnostic)]
pub(crate) enum RequireStaticErr {
#[note(borrowck_used_impl_require_static)]