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Introduce new-style attribute parsers for several attributes

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note: compiler compiles but librustdoc and clippy don't
This commit is contained in:
Jana Dönszelmann 2025-02-09 22:49:33 +01:00
parent dbd3b7928e
commit 7e0f5b5016
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50 changed files with 1519 additions and 1342 deletions
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35
compiler/rustc_hir_analysis/src/check/check.rs
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@ -2,6 +2,8 @@ use std::cell::LazyCell;
use std::ops::ControlFlow;
use rustc_abi::FieldIdx;
use rustc_attr_parsing::AttributeKind;
use rustc_attr_parsing::ReprAttr::ReprPacked;
use rustc_data_structures::unord::{UnordMap, UnordSet};
use rustc_errors::MultiSpan;
use rustc_errors::codes::*;
@ -1203,11 +1205,13 @@ fn check_simd(tcx: TyCtxt<'_>, sp: Span, def_id: LocalDefId) {
pub(super) fn check_packed(tcx: TyCtxt<'_>, sp: Span, def: ty::AdtDef<'_>) {
let repr = def.repr();
if repr.packed() {
for attr in tcx.get_attrs(def.did(), sym::repr) {
for r in attr::parse_repr_attr(tcx.sess, attr) {
if let attr::ReprPacked(pack) = r
if let Some(reprs) =
attr::find_attr!(tcx.get_all_attrs(def.did()), AttributeKind::Repr(r) => r)
{
for (r, _) in reprs {
if let ReprPacked(pack) = r
&& let Some(repr_pack) = repr.pack
&& pack != repr_pack
&& pack != &repr_pack
{
struct_span_code_err!(
tcx.dcx(),
@ -1419,16 +1423,19 @@ fn check_enum(tcx: TyCtxt<'_>, def_id: LocalDefId) {
def.destructor(tcx); // force the destructor to be evaluated
if def.variants().is_empty() {
if let Some(attr) = tcx.get_attrs(def_id, sym::repr).next() {
struct_span_code_err!(
tcx.dcx(),
attr.span(),
E0084,
"unsupported representation for zero-variant enum"
)
.with_span_label(tcx.def_span(def_id), "zero-variant enum")
.emit();
}
attr::find_attr!(
tcx.get_all_attrs(def_id),
AttributeKind::Repr(rs) => {
struct_span_code_err!(
tcx.dcx(),
rs.first().unwrap().1,
E0084,
"unsupported representation for zero-variant enum"
)
.with_span_label(tcx.def_span(def_id), "zero-variant enum")
.emit();
}
);
}
let repr_type_ty = def.repr().discr_type().to_ty(tcx);