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Tweak suggestion spans for invalid crate-level inner attribute

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CC #89566.
This commit is contained in:
Esteban Küber 2023-10-18 00:24:21 +00:00
parent 6f65201659
commit 27919ceba7
11 changed files with 160 additions and 60 deletions
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22
compiler/rustc_passes/src/check_attr.rs
View file

@ -2534,10 +2534,30 @@ fn check_invalid_crate_level_attr(tcx: TyCtxt<'_>, attrs: &[Attribute]) {
if attr.style == AttrStyle::Inner {
for attr_to_check in ATTRS_TO_CHECK {
if attr.has_name(*attr_to_check) {
let item = tcx
.hir()
.items()
.map(|id| tcx.hir().item(id))
.find(|item| !item.span.is_dummy()) // Skip prelude `use`s
.map(|item| errors::ItemFollowingInnerAttr {
span: item.ident.span,
kind: item.kind.descr(),
});
tcx.sess.emit_err(errors::InvalidAttrAtCrateLevel {
span: attr.span,
snippet: tcx.sess.source_map().span_to_snippet(attr.span).ok(),
sugg_span: tcx
.sess
.source_map()
.span_to_snippet(attr.span)
.ok()
.filter(|src| src.starts_with("#!["))
.map(|_| {
attr.span
.with_lo(attr.span.lo() + BytePos(1))
.with_hi(attr.span.lo() + BytePos(2))
}),
name: *attr_to_check,
item,
});
}
}

20
compiler/rustc_passes/src/errors.rs
View file

@ -856,8 +856,15 @@ pub struct UnknownLangItem {
pub struct InvalidAttrAtCrateLevel {
pub span: Span,
pub snippet: Option<String>,
pub sugg_span: Option<Span>,
pub name: Symbol,
pub item: Option<ItemFollowingInnerAttr>,
}
#[derive(Clone, Copy)]
pub struct ItemFollowingInnerAttr {
pub span: Span,
pub kind: &'static str,
}
impl IntoDiagnostic<'_> for InvalidAttrAtCrateLevel {
@ -871,15 +878,18 @@ impl IntoDiagnostic<'_> for InvalidAttrAtCrateLevel {
diag.set_arg("name", self.name);
// Only emit an error with a suggestion if we can create a string out
// of the attribute span
if let Some(src) = self.snippet {
let replacement = src.replace("#!", "#");
if let Some(span) = self.sugg_span {
diag.span_suggestion_verbose(
self.span,
span,
fluent::passes_suggestion,
replacement,
String::new(),
rustc_errors::Applicability::MachineApplicable,
);
}
if let Some(item) = self.item {
diag.set_arg("kind", item.kind);
diag.span_label(item.span, fluent::passes_invalid_attr_at_crate_level_item);
}
diag
}
}