pub struct ConstAlloc<'tcx> {
    pub alloc_id: AllocId,
    pub ty: Ty<'tcx>,
}
Expand description

Evaluated Constants Represents the result of const evaluation via the eval_to_allocation query. Not to be confused with ConstAllocation, which directly refers to the underlying data! Here we indirect via an AllocId.

Fields§

§alloc_id: AllocId

The value lives here, at offset 0, and that allocation definitely is an AllocKind::Memory (so you can use AllocMap::unwrap_memory).

§ty: Ty<'tcx>

Trait Implementations§

source§

impl<'tcx> Clone for ConstAlloc<'tcx>

source§

fn clone(&self) -> ConstAlloc<'tcx>

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
source§

impl<'tcx> Debug for ConstAlloc<'tcx>

source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
source§

impl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for ConstAlloc<'tcx>

source§

fn decode(__decoder: &mut __D) -> Self

source§

impl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for ConstAlloc<'tcx>

source§

fn encode(&self, __encoder: &mut __E)

source§

impl<'tcx> EraseType for ConstAlloc<'tcx>

§

type Result = [u8; 16]

source§

impl<'tcx> Hash for ConstAlloc<'tcx>

source§

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
1.3.0 · source§

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
source§

impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for ConstAlloc<'tcx>

source§

fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher )

source§

impl<'tcx> Key for ConstAlloc<'tcx>

§

type CacheSelector = DefaultCacheSelector<ConstAlloc<'tcx>>

source§

fn default_span(&self, _: TyCtxt<'_>) -> Span

In the event that a cycle occurs, if no explicit span has been given for a query with key self, what span should we use?
source§

fn key_as_def_id(&self) -> Option<DefId>

If the key is a DefId or DefId–equivalent, return that DefId. Otherwise, return None.
source§

fn ty_adt_id(&self) -> Option<DefId>

source§

impl<'tcx> PartialEq<ConstAlloc<'tcx>> for ConstAlloc<'tcx>

source§

fn eq(&self, other: &ConstAlloc<'tcx>) -> bool

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
source§

impl<'tcx> Copy for ConstAlloc<'tcx>

source§

impl<'tcx> Eq for ConstAlloc<'tcx>

source§

impl<'tcx> StructuralEq for ConstAlloc<'tcx>

source§

impl<'tcx> StructuralPartialEq for ConstAlloc<'tcx>

Auto Trait Implementations§

§

impl<'tcx> !RefUnwindSafe for ConstAlloc<'tcx>

§

impl<'tcx> Send for ConstAlloc<'tcx>

§

impl<'tcx> Sync for ConstAlloc<'tcx>

§

impl<'tcx> Unpin for ConstAlloc<'tcx>

§

impl<'tcx> !UnwindSafe for ConstAlloc<'tcx>

Blanket Implementations§

source§

impl<T> Aligned for T

source§

const ALIGN: Alignment = _

Alignment of Self.
source§

impl<T> Any for Twhere T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere T: Copy,

source§

fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T

source§

fn allocate_from_iter<'a>( arena: &'a Arena<'tcx>, iter: impl IntoIterator<Item = T> ) -> &'a mut [T]

source§

impl<T> Borrow<T> for Twhere T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for Twhere T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T, R> CollectAndApply<T, R> for T

source§

fn collect_and_apply<I, F>(iter: I, f: F) -> Rwhere I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

§

type Output = R

source§

impl<Tcx, T> DepNodeParams<Tcx> for Twhere Tcx: DepContext, T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

source§

default fn fingerprint_style() -> FingerprintStyle

source§

default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint

This method turns the parameters of a DepNodeConstructor into an opaque Fingerprint to be used in DepNode. Not all DepNodeParams support being turned into a Fingerprint (they don’t need to if the corresponding DepNode is anonymous).
source§

default fn to_debug_str(&self, _: Tcx) -> String

source§

default fn recover(_: Tcx, _: &DepNode) -> Option<T>

This method tries to recover the query key from the given 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.
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for Twhere U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<P> IntoQueryParam<P> for P

source§

impl<T> MaybeResult<T> for T

§

type Error = !

source§

fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

source§

fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

source§

impl<T> ToOwned for Twhere T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<'tcx, T> ToPredicate<'tcx, T> for T

source§

fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T

source§

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<Tcx, T> Value<Tcx> for Twhere Tcx: DepContext,

source§

default fn from_cycle_error( tcx: Tcx, cycle: &[QueryInfo], _guar: ErrorGuaranteed ) -> 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: 16 bytes