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rustc_attr_parsing/attributes/
pin_v2.rs

1use rustc_feature::AttributeStability;
2use rustc_hir::Target;
3use rustc_hir::attrs::AttributeKind;
4use rustc_span::{Span, Symbol, sym};
5
6use crate::attributes::NoArgsAttributeParser;
7use crate::target_checking::AllowedTargets;
8use crate::target_checking::Policy::Allow;
9use crate::unstable;
10
11pub(crate) struct PinV2Parser;
12
13impl NoArgsAttributeParser for PinV2Parser {
14    const PATH: &[Symbol] = &[sym::pin_v2];
15    const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[
16        Allow(Target::Enum),
17        Allow(Target::Struct),
18        Allow(Target::Union),
19    ]);
20    const STABILITY: AttributeStability = AttributeStability::Unstable {
    gate_name: rustc_span::sym::pin_ergonomics,
    gate_check: rustc_feature::Features::pin_ergonomics,
    notes: &[],
}unstable!(pin_ergonomics);
21    const CREATE: fn(Span) -> AttributeKind = AttributeKind::PinV2;
22}