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port #[no_std] to the new attribute parsing infrastructure

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Jana Dönszelmann 2025-08-24 11:15:09 +02:00
parent b262cae857
commit 0db2eb7734
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5 changed files with 19 additions and 2 deletions
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11
compiler/rustc_attr_parsing/src/attributes/crate_level.rs
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@ -188,3 +188,14 @@ impl<S: Stage> NoArgsAttributeParser<S> for NoCoreParser {
const CREATE: fn(Span) -> AttributeKind = AttributeKind::NoCore;
const TYPE: AttributeType = AttributeType::CrateLevel;
}
pub(crate) struct NoStdParser;
impl<S: Stage> NoArgsAttributeParser<S> for NoStdParser {
const PATH: &[Symbol] = &[sym::no_std];
const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Warn;
// FIXME: recursion limit is allowed on all targets and ignored,
// even though it should only be valid on crates of course
const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(ALL_TARGETS);
const CREATE: fn(Span) -> AttributeKind = AttributeKind::NoStd;
const TYPE: AttributeType = AttributeType::CrateLevel;
}

3
compiler/rustc_attr_parsing/src/context.rs
View file

@ -25,7 +25,7 @@ use crate::attributes::codegen_attrs::{
};
use crate::attributes::confusables::ConfusablesParser;
use crate::attributes::crate_level::{
CrateNameParser, MoveSizeLimitParser, NoCoreParser, PatternComplexityLimitParser,
CrateNameParser, MoveSizeLimitParser, NoCoreParser, NoStdParser, PatternComplexityLimitParser,
RecursionLimitParser, TypeLengthLimitParser,
};
use crate::attributes::deprecation::DeprecationParser;
@ -225,6 +225,7 @@ attribute_parsers!(
Single<WithoutArgs<NoCoreParser>>,
Single<WithoutArgs<NoImplicitPreludeParser>>,
Single<WithoutArgs<NoMangleParser>>,
Single<WithoutArgs<NoStdParser>>,
Single<WithoutArgs<NonExhaustiveParser>>,
Single<WithoutArgs<ParenSugarParser>>,
Single<WithoutArgs<PassByValueParser>>,

3
compiler/rustc_hir/src/attrs/data_structures.rs
View file

@ -588,6 +588,9 @@ pub enum AttributeKind {
/// Represents `#[no_mangle]`
NoMangle(Span),
/// Represents `#[no_std]`
NoStd(Span),
/// Represents `#[non_exhaustive]`
NonExhaustive(Span),

3
compiler/rustc_hir/src/attrs/encode_cross_crate.rs
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@ -66,7 +66,8 @@ impl AttributeKind {
Naked(..) => No,
NoCore(..) => No,
NoImplicitPrelude(..) => No,
NoMangle(..) => Yes, // Needed for rustdoc
NoMangle(..) => Yes, // Needed for rustdoc
NoStd(..) => No,
NonExhaustive(..) => Yes, // Needed for rustdoc
Optimize(..) => No,
ParenSugar(..) => No,

1
compiler/rustc_passes/src/check_attr.rs
View file

@ -275,6 +275,7 @@ impl<'tcx> CheckAttrVisitor<'tcx> {
| AttributeKind::TypeLengthLimit { .. }
| AttributeKind::PatternComplexityLimit { .. }
| AttributeKind::NoCore { .. }
| AttributeKind::NoStd { .. }
) => { /* do nothing */ }
Attribute::Unparsed(attr_item) => {
style = Some(attr_item.style);