bjoernager/rust
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errors: only eagerly translate subdiagnostics

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Subdiagnostics don't need to be lazily translated, they can always be
eagerly translated. Eager translation is slightly more complex as we need
to have a `DiagCtxt` available to perform the translation, which involves
slightly more threading of that context.

This slight increase in complexity should enable later simplifications -
like passing `DiagCtxt` into `AddToDiagnostic` and moving Fluent messages
into the diagnostic structs rather than having them in separate files
(working on that was what led to this change).

Signed-off-by: David Wood <david@davidtw.co>
This commit is contained in:
David Wood 2024-02-14 14:17:27 +00:00
parent bb89df6903
commit b80fc5d4e8
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43 changed files with 532 additions and 388 deletions
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39
compiler/rustc_macros/src/diagnostics/diagnostic_builder.rs
View file

@ -331,44 +331,7 @@ impl DiagnosticDeriveVariantBuilder {
}
}
(Meta::Path(_), "subdiagnostic") => {
if FieldInnerTy::from_type(&info.binding.ast().ty).will_iterate() {
let DiagnosticDeriveKind::Diagnostic = self.kind else {
// No eager translation for lints.
return Ok(quote! { diag.subdiagnostic(#binding); });
};
return Ok(quote! { diag.eager_subdiagnostic(dcx, #binding); });
} else {
return Ok(quote! { diag.subdiagnostic(#binding); });
}
}
(Meta::List(meta_list), "subdiagnostic") => {
let err = || {
span_err(
meta_list.span().unwrap(),
"`eager` is the only supported nested attribute for `subdiagnostic`",
)
.emit();
};
let Ok(p): Result<Path, _> = meta_list.parse_args() else {
err();
return Ok(quote! {});
};
if !p.is_ident("eager") {
err();
return Ok(quote! {});
}
match &self.kind {
DiagnosticDeriveKind::Diagnostic => {}
DiagnosticDeriveKind::LintDiagnostic => {
throw_invalid_attr!(attr, |diag| {
diag.help("eager subdiagnostics are not supported on lints")
})
}
};
return Ok(quote! { diag.eager_subdiagnostic(dcx, #binding); });
return Ok(quote! { diag.subdiagnostic(diag.dcx, #binding); });
}
_ => (),
}