diff options
Diffstat (limited to 'compiler/rustc_feature/src/builtin_attrs.rs')
| -rw-r--r-- | compiler/rustc_feature/src/builtin_attrs.rs | 56 |
1 files changed, 53 insertions, 3 deletions
diff --git a/compiler/rustc_feature/src/builtin_attrs.rs b/compiler/rustc_feature/src/builtin_attrs.rs index 8b7e93fd555..edfda9bf066 100644 --- a/compiler/rustc_feature/src/builtin_attrs.rs +++ b/compiler/rustc_feature/src/builtin_attrs.rs @@ -59,6 +59,17 @@ pub enum AttributeType { CrateLevel, } +#[derive(Copy, Clone, PartialEq, Debug)] +#[allow(dead_code)] +pub enum AttributeSafety { + /// Normal attribute that does not need `#[unsafe(...)]` + Normal, + + /// Unsafe attribute that requires safety obligations + /// to be discharged + Unsafe, +} + #[derive(Clone, Copy)] pub enum AttributeGate { /// Is gated by a given feature gate, reason @@ -177,6 +188,18 @@ macro_rules! ungated { name: sym::$attr, encode_cross_crate: $encode_cross_crate, type_: $typ, + safety: AttributeSafety::Normal, + template: $tpl, + gate: Ungated, + duplicates: $duplicates, + } + }; + (unsafe $attr:ident, $typ:expr, $tpl:expr, $duplicates:expr, $encode_cross_crate:expr $(,)?) => { + BuiltinAttribute { + name: sym::$attr, + encode_cross_crate: $encode_cross_crate, + type_: $typ, + safety: AttributeSafety::Unsafe, template: $tpl, gate: Ungated, duplicates: $duplicates, @@ -190,6 +213,7 @@ macro_rules! gated { name: sym::$attr, encode_cross_crate: $encode_cross_crate, type_: $typ, + safety: AttributeSafety::Normal, template: $tpl, duplicates: $duplicates, gate: Gated(Stability::Unstable, sym::$gate, $msg, cfg_fn!($gate)), @@ -200,6 +224,29 @@ macro_rules! gated { name: sym::$attr, encode_cross_crate: $encode_cross_crate, type_: $typ, + safety: AttributeSafety::Normal, + template: $tpl, + duplicates: $duplicates, + gate: Gated(Stability::Unstable, sym::$attr, $msg, cfg_fn!($attr)), + } + }; + (unsafe $attr:ident, $typ:expr, $tpl:expr, $duplicates:expr, $encode_cross_crate:expr, $gate:ident, $msg:expr $(,)?) => { + BuiltinAttribute { + name: sym::$attr, + encode_cross_crate: $encode_cross_crate, + type_: $typ, + safety: AttributeSafety::Unsafe, + template: $tpl, + duplicates: $duplicates, + gate: Gated(Stability::Unstable, sym::$gate, $msg, cfg_fn!($gate)), + } + }; + (unsafe $attr:ident, $typ:expr, $tpl:expr, $duplicates:expr, $encode_cross_crate:expr, $msg:expr $(,)?) => { + BuiltinAttribute { + name: sym::$attr, + encode_cross_crate: $encode_cross_crate, + type_: $typ, + safety: AttributeSafety::Unsafe, template: $tpl, duplicates: $duplicates, gate: Gated(Stability::Unstable, sym::$attr, $msg, cfg_fn!($attr)), @@ -228,6 +275,7 @@ macro_rules! rustc_attr { name: sym::$attr, encode_cross_crate: $encode_cross_crate, type_: $typ, + safety: AttributeSafety::Normal, template: $tpl, duplicates: $duplicates, gate: Gated(Stability::Unstable, sym::rustc_attrs, $msg, cfg_fn!(rustc_attrs)), @@ -258,6 +306,7 @@ pub struct BuiltinAttribute { /// Otherwise, it can only be used in the local crate. pub encode_cross_crate: EncodeCrossCrate, pub type_: AttributeType, + pub safety: AttributeSafety, pub template: AttributeTemplate, pub duplicates: AttributeDuplicates, pub gate: AttributeGate, @@ -375,9 +424,9 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ ), ungated!(no_link, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::No), ungated!(repr, Normal, template!(List: "C"), DuplicatesOk, EncodeCrossCrate::No), - ungated!(export_name, Normal, template!(NameValueStr: "name"), FutureWarnPreceding, EncodeCrossCrate::No), - ungated!(link_section, Normal, template!(NameValueStr: "name"), FutureWarnPreceding, EncodeCrossCrate::No), - ungated!(no_mangle, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::No), + ungated!(unsafe export_name, Normal, template!(NameValueStr: "name"), FutureWarnPreceding, EncodeCrossCrate::No), + ungated!(unsafe link_section, Normal, template!(NameValueStr: "name"), FutureWarnPreceding, EncodeCrossCrate::No), + ungated!(unsafe no_mangle, Normal, template!(Word), WarnFollowing, EncodeCrossCrate::No), ungated!(used, Normal, template!(Word, List: "compiler|linker"), WarnFollowing, EncodeCrossCrate::No), ungated!(link_ordinal, Normal, template!(List: "ordinal"), ErrorPreceding, EncodeCrossCrate::Yes), @@ -850,6 +899,7 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ // FIXME: This can be `true` once we always use `tcx.is_diagnostic_item`. encode_cross_crate: EncodeCrossCrate::Yes, type_: Normal, + safety: AttributeSafety::Normal, template: template!(NameValueStr: "name"), duplicates: ErrorFollowing, gate: Gated( |