rustc_attr_parsing/attributes/
rustc_allocator.rs

1use super::prelude::*;
2
3pub(crate) struct RustcAllocatorParser;
4
5impl<S: Stage> NoArgsAttributeParser<S> for RustcAllocatorParser {
6    const PATH: &[Symbol] = &[sym::rustc_allocator];
7    const ALLOWED_TARGETS: AllowedTargets =
8        AllowedTargets::AllowList(&[Allow(Target::Fn), Allow(Target::ForeignFn)]);
9    const CREATE: fn(Span) -> AttributeKind = |_| AttributeKind::RustcAllocator;
10}
11
12pub(crate) struct RustcAllocatorZeroedParser;
13
14impl<S: Stage> NoArgsAttributeParser<S> for RustcAllocatorZeroedParser {
15    const PATH: &[Symbol] = &[sym::rustc_allocator_zeroed];
16    const ALLOWED_TARGETS: AllowedTargets =
17        AllowedTargets::AllowList(&[Allow(Target::Fn), Allow(Target::ForeignFn)]);
18    const CREATE: fn(Span) -> AttributeKind = |_| AttributeKind::RustcAllocatorZeroed;
19}
20
21pub(crate) struct RustcAllocatorZeroedVariantParser;
22
23impl<S: Stage> SingleAttributeParser<S> for RustcAllocatorZeroedVariantParser {
24    const PATH: &[Symbol] = &[sym::rustc_allocator_zeroed_variant];
25    const ALLOWED_TARGETS: AllowedTargets =
26        AllowedTargets::AllowList(&[Allow(Target::Fn), Allow(Target::ForeignFn)]);
27    const TEMPLATE: AttributeTemplate = ::rustc_feature::AttributeTemplate {
    word: false,
    list: None,
    one_of: &[],
    name_value_str: Some(&["function"]),
    docs: None,
}template!(NameValueStr: "function");
28    fn convert(cx: &mut AcceptContext<'_, '_, S>, args: &ArgParser) -> Option<AttributeKind> {
29        let Some(name) = args.name_value().and_then(NameValueParser::value_as_str) else {
30            let attr_span = cx.attr_span;
31            cx.adcx().expected_name_value(attr_span, None);
32            return None;
33        };
34
35        Some(AttributeKind::RustcAllocatorZeroedVariant { name })
36    }
37}
38
39pub(crate) struct RustcDeallocatorParser;
40
41impl<S: Stage> NoArgsAttributeParser<S> for RustcDeallocatorParser {
42    const PATH: &[Symbol] = &[sym::rustc_deallocator];
43    const ALLOWED_TARGETS: AllowedTargets =
44        AllowedTargets::AllowList(&[Allow(Target::Fn), Allow(Target::ForeignFn)]);
45    const CREATE: fn(Span) -> AttributeKind = |_| AttributeKind::RustcDeallocator;
46}
47
48pub(crate) struct RustcReallocatorParser;
49
50impl<S: Stage> NoArgsAttributeParser<S> for RustcReallocatorParser {
51    const PATH: &[Symbol] = &[sym::rustc_reallocator];
52    const ALLOWED_TARGETS: AllowedTargets =
53        AllowedTargets::AllowList(&[Allow(Target::Fn), Allow(Target::ForeignFn)]);
54    const CREATE: fn(Span) -> AttributeKind = |_| AttributeKind::RustcReallocator;
55}
rustc_attr_parsing/attributes/rustc_allocator.rs

rustc_attr_parsing/attributes/
rustc_allocator.rs
