Struct rustc_middle::middle::stability::Index
source · pub struct Index {
pub stab_map: FxHashMap<LocalDefId, Stability>,
pub const_stab_map: FxHashMap<LocalDefId, ConstStability>,
pub default_body_stab_map: FxHashMap<LocalDefId, DefaultBodyStability>,
pub depr_map: FxHashMap<LocalDefId, DeprecationEntry>,
pub implications: FxHashMap<Symbol, Symbol>,
}Expand description
A stability index, giving the stability level for items and methods.
Fields§
§stab_map: FxHashMap<LocalDefId, Stability>This is mostly a cache, except the stabilities of local items are filled by the annotator.
const_stab_map: FxHashMap<LocalDefId, ConstStability>§default_body_stab_map: FxHashMap<LocalDefId, DefaultBodyStability>§depr_map: FxHashMap<LocalDefId, DeprecationEntry>§implications: FxHashMap<Symbol, Symbol>Mapping from feature name to feature name based on the implied_by field of #[unstable]
attributes. If a #[unstable(feature = "implier", implied_by = "impliee")] attribute
exists, then this map will have a impliee -> implier entry.
This mapping is necessary unless both the #[stable] and #[unstable] attributes should
specify their implications (both implies and implied_by). If only one of the two
attributes do (as in the current implementation, implied_by in #[unstable]), then this
mapping is necessary for diagnostics. When a “unnecessary feature attribute” error is
reported, only the #[stable] attribute information is available, so the map is necessary
to know that the feature implies another feature. If it were reversed, and the #[stable]
attribute had an implies meta item, then a map would be necessary when avoiding a “use of
unstable feature” error for a feature that was implied.
Implementations§
source§impl Index
impl Index
pub fn local_stability(&self, def_id: LocalDefId) -> Option<Stability>
pub fn local_const_stability(&self, def_id: LocalDefId) -> Option<ConstStability>
pub fn local_default_body_stability(
&self,
def_id: LocalDefId
) -> Option<DefaultBodyStability>
pub fn local_deprecation_entry(
&self,
def_id: LocalDefId
) -> Option<DeprecationEntry>
Trait Implementations§
source§impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for Index
impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for Index
fn hash_stable(
&self,
__hcx: &mut StableHashingContext<'__ctx>,
__hasher: &mut StableHasher
)
Auto Trait Implementations§
impl RefUnwindSafe for Index
impl Send for Index
impl Sync for Index
impl Unpin for Index
impl UnwindSafe for Index
Blanket Implementations§
source§impl<Tcx, T> DepNodeParams<Tcx> for Twhere
Tcx: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
impl<Tcx, T> DepNodeParams<Tcx> for Twhere
Tcx: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
default fn fingerprint_style() -> FingerprintStyle
source§default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint
default fn to_debug_str(&self, _: Tcx) -> String
source§default fn recover(
_: Tcx,
_: &DepNode<<Tcx as DepContext>::DepKind>
) -> Option<T>
default fn recover(
_: Tcx,
_: &DepNode<<Tcx as DepContext>::DepKind>
) -> Option<T>
DepNode,
something which is needed when forcing DepNodes during red-green
evaluation. The query system will only call this method if
fingerprint_style() is not FingerprintStyle::Opaque.
It is always valid to return None here, in which case incremental
compilation will treat the query as having changed instead of forcing it. Read moresource§impl<T, R> InternIteratorElement<T, R> for T
impl<T, R> InternIteratorElement<T, R> for T
type Output = R
fn intern_with<I, F>(iter: I, f: F) -> <T as InternIteratorElement<T, R>>::Outputwhere
I: Iterator<Item = T>,
F: FnOnce(&[T]) -> R,
source§impl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
source§impl<'tcx, T> ToPredicate<'tcx, T> for T
impl<'tcx, T> ToPredicate<'tcx, T> for T
fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T
source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
default fn from_cycle_error(tcx: Tcx, _: &[QueryInfo]) -> T
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.
Size: 160 bytes