rustc_attr_parsing/attributes/
lint_helpers.rs

1use rustc_hir::attrs::AttributeKind;
2use rustc_hir::{MethodKind, Target};
3use rustc_span::{Span, Symbol, sym};
4
5use crate::attributes::{NoArgsAttributeParser, OnDuplicate};
6use crate::context::MaybeWarn::{Allow, Error};
7use crate::context::{AllowedTargets, Stage};
8pub(crate) struct AsPtrParser;
9impl<S: Stage> NoArgsAttributeParser<S> for AsPtrParser {
10    const PATH: &[Symbol] = &[sym::rustc_as_ptr];
11    const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Error;
12    const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[
13        Allow(Target::Fn),
14        Allow(Target::Method(MethodKind::Inherent)),
15        Allow(Target::Method(MethodKind::Trait { body: false })),
16        Allow(Target::Method(MethodKind::Trait { body: true })),
17        Allow(Target::Method(MethodKind::TraitImpl)),
18    ]);
19    const CREATE: fn(Span) -> AttributeKind = AttributeKind::AsPtr;
20}
21
22pub(crate) struct PubTransparentParser;
23impl<S: Stage> NoArgsAttributeParser<S> for PubTransparentParser {
24    const PATH: &[Symbol] = &[sym::rustc_pub_transparent];
25    const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Error;
26    const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[
27        Allow(Target::Struct),
28        Allow(Target::Enum),
29        Allow(Target::Union),
30    ]);
31    const CREATE: fn(Span) -> AttributeKind = AttributeKind::PubTransparent;
32}
33
34pub(crate) struct PassByValueParser;
35impl<S: Stage> NoArgsAttributeParser<S> for PassByValueParser {
36    const PATH: &[Symbol] = &[sym::rustc_pass_by_value];
37    const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Error;
38    const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[
39        Allow(Target::Struct),
40        Allow(Target::Enum),
41        Allow(Target::TyAlias),
42    ]);
43    const CREATE: fn(Span) -> AttributeKind = AttributeKind::PassByValue;
44}
45
46pub(crate) struct AutomaticallyDerivedParser;
47impl<S: Stage> NoArgsAttributeParser<S> for AutomaticallyDerivedParser {
48    const PATH: &[Symbol] = &[sym::automatically_derived];
49    const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::Warn;
50    const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowListWarnRest(&[
51        Allow(Target::Impl { of_trait: true }),
52        Error(Target::Crate),
53        Error(Target::WherePredicate),
54    ]);
55    const CREATE: fn(Span) -> AttributeKind = AttributeKind::AutomaticallyDerived;
56}
rustc_attr_parsing/attributes/lint_helpers.rs

rustc_attr_parsing/attributes/
lint_helpers.rs
