Enum rustc_middle::ty::VariantDiscr
source · [−]Variants
Explicit(DefId)
Explicit value for this variant, i.e., X = 123
.
The DefId
corresponds to the embedded constant.
Relative(u32)
The previous variant’s discriminant plus one.
For efficiency reasons, the distance from the
last Explicit
discriminant is being stored,
or 0
for the first variant, if it has none.
Trait Implementations
sourceimpl Clone for VariantDiscr
impl Clone for VariantDiscr
sourcefn clone(&self) -> VariantDiscr
fn clone(&self) -> VariantDiscr
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
sourceimpl Debug for VariantDiscr
impl Debug for VariantDiscr
sourceimpl<'tcx, __D: TyDecoder<'tcx>> Decodable<__D> for VariantDiscr
impl<'tcx, __D: TyDecoder<'tcx>> Decodable<__D> for VariantDiscr
sourceimpl<'tcx, __E: TyEncoder<'tcx>> Encodable<__E> for VariantDiscr
impl<'tcx, __E: TyEncoder<'tcx>> Encodable<__E> for VariantDiscr
sourceimpl<'__ctx> HashStable<StableHashingContext<'__ctx>> for VariantDiscr
impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for VariantDiscr
fn hash_stable(
&self,
__hcx: &mut StableHashingContext<'__ctx>,
__hasher: &mut StableHasher
)
sourceimpl PartialEq<VariantDiscr> for VariantDiscr
impl PartialEq<VariantDiscr> for VariantDiscr
sourcefn eq(&self, other: &VariantDiscr) -> bool
fn eq(&self, other: &VariantDiscr) -> bool
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
sourcefn ne(&self, other: &VariantDiscr) -> bool
fn ne(&self, other: &VariantDiscr) -> bool
This method tests for !=
.
impl Copy for VariantDiscr
impl Eq for VariantDiscr
impl StructuralEq for VariantDiscr
impl StructuralPartialEq for VariantDiscr
Auto Trait Implementations
impl RefUnwindSafe for VariantDiscr
impl Send for VariantDiscr
impl Sync for VariantDiscr
impl Unpin for VariantDiscr
impl UnwindSafe for VariantDiscr
Blanket Implementations
sourceimpl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T where
T: Copy,
impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T where
T: Copy,
fn allocate_on(self, arena: &'a Arena<'tcx>) -> &'a mut T
fn allocate_from_iter(
arena: &'a Arena<'tcx>,
iter: impl IntoIterator<Item = T>
) -> &'a mut [T]ⓘNotable traits for &'_ [u8]impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<Ctxt, T> DepNodeParams<Ctxt> for T where
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
impl<Ctxt, T> DepNodeParams<Ctxt> for T where
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
default fn fingerprint_style() -> FingerprintStyle
sourcedefault fn to_fingerprint(&self, tcx: Ctxt) -> Fingerprint
default fn to_fingerprint(&self, tcx: Ctxt) -> 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). Read more
default fn to_debug_str(&self, Ctxt) -> String
sourcedefault fn recover(Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> Option<T>
default fn recover(Ctxt, &DepNode<<Ctxt as DepContext>::DepKind>) -> Option<T>
This method tries to recover the query key from the given DepNode
,
something which is needed when forcing DepNode
s 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 more
sourceimpl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more
impl<'a, T> Captures<'a> for T where
T: ?Sized,
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: 12 bytes
Size for each variant:
Explicit
: 8 bytesRelative
: 4 bytes