rust/compiler/rustc_attr_parsing/src/attributes/lint_helpers.rs at bead56998e8d1a0cc8a3e67bbceec66d0ac909a3 · JonathanBrouwer/rust · GitHub

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use super::prelude::*;

pub(crate) struct RustcAsPtrParser;
impl NoArgsAttributeParser for RustcAsPtrParser {
    const PATH: &[Symbol] = &[sym::rustc_as_ptr];
    const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[
        Allow(Target::Fn),
        Allow(Target::Method(MethodKind::Inherent)),
        Allow(Target::Method(MethodKind::Trait { body: false })),
        Allow(Target::Method(MethodKind::Trait { body: true })),
        Allow(Target::Method(MethodKind::TraitImpl)),
    ]);
    const CREATE: fn(Span) -> AttributeKind = |_| AttributeKind::RustcAsPtr;
}

pub(crate) struct RustcPubTransparentParser;
impl NoArgsAttributeParser for RustcPubTransparentParser {
    const PATH: &[Symbol] = &[sym::rustc_pub_transparent];
    const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[
        Allow(Target::Struct),
        Allow(Target::Enum),
        Allow(Target::Union),
    ]);
    const CREATE: fn(Span) -> AttributeKind = AttributeKind::RustcPubTransparent;
}

pub(crate) struct RustcPassByValueParser;
impl NoArgsAttributeParser for RustcPassByValueParser {
    const PATH: &[Symbol] = &[sym::rustc_pass_by_value];
    const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[
        Allow(Target::Struct),
        Allow(Target::Enum),
        Allow(Target::TyAlias),
    ]);
    const CREATE: fn(Span) -> AttributeKind = |_| AttributeKind::RustcPassByValue;
}

pub(crate) struct RustcShouldNotBeCalledOnConstItemsParser;
impl NoArgsAttributeParser for RustcShouldNotBeCalledOnConstItemsParser {
    const PATH: &[Symbol] = &[sym::rustc_should_not_be_called_on_const_items];
    const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowList(&[
        Allow(Target::Method(MethodKind::Inherent)),
        Allow(Target::Method(MethodKind::TraitImpl)),
    ]);
    const CREATE: fn(Span) -> AttributeKind = |_| AttributeKind::RustcShouldNotBeCalledOnConstItems;
}

pub(crate) struct AutomaticallyDerivedParser;
impl NoArgsAttributeParser for AutomaticallyDerivedParser {
    const PATH: &[Symbol] = &[sym::automatically_derived];
    const ON_DUPLICATE: OnDuplicate = OnDuplicate::Warn;
    const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowListWarnRest(&[
        Allow(Target::Impl { of_trait: true }),
        Error(Target::Crate),
        Error(Target::WherePredicate),
    ]);
    const CREATE: fn(Span) -> AttributeKind = |_| AttributeKind::AutomaticallyDerived;
}