Enum rustc_middle::ty::adjustment::PointerCast
source · pub enum PointerCast {
ReifyFnPointer,
UnsafeFnPointer,
ClosureFnPointer(Unsafety),
MutToConstPointer,
ArrayToPointer,
Unsize,
}
Variants
ReifyFnPointer
Go from a fn-item type to a fn-pointer type.
UnsafeFnPointer
Go from a safe fn pointer to an unsafe fn pointer.
ClosureFnPointer(Unsafety)
Go from a non-capturing closure to an fn pointer or an unsafe fn pointer. It cannot convert a closure that requires unsafe.
MutToConstPointer
Go from a mut raw pointer to a const raw pointer.
ArrayToPointer
Go from *const [T; N]
to *const T
Unsize
Unsize a pointer/reference value, e.g., &[T; n]
to
&[T]
. Note that the source could be a thin or fat pointer.
This will do things like convert thin pointers to fat
pointers, or convert structs containing thin pointers to
structs containing fat pointers, or convert between fat
pointers. We don’t store the details of how the transform is
done (in fact, we don’t know that, because it might depend on
the precise type parameters). We just store the target
type. Codegen backends and miri figure out what has to be done
based on the precise source/target type at hand.
Trait Implementations
sourceimpl Clone for PointerCast
impl Clone for PointerCast
sourcefn clone(&self) -> PointerCast
fn clone(&self) -> PointerCast
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresourceimpl Debug for PointerCast
impl Debug for PointerCast
sourceimpl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for PointerCast
impl<'tcx, __D: TyDecoder<I = TyCtxt<'tcx>>> Decodable<__D> for PointerCast
sourceimpl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for PointerCast
impl<'tcx, __E: TyEncoder<I = TyCtxt<'tcx>>> Encodable<__E> for PointerCast
sourceimpl Hash for PointerCast
impl Hash for PointerCast
sourceimpl<'__ctx> HashStable<StableHashingContext<'__ctx>> for PointerCast
impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for PointerCast
fn hash_stable(
&self,
__hcx: &mut StableHashingContext<'__ctx>,
__hasher: &mut StableHasher
)
sourceimpl<'tcx> Lift<'tcx> for PointerCast
impl<'tcx> Lift<'tcx> for PointerCast
type Lifted = PointerCast
fn lift_to_tcx(self, _: TyCtxt<'tcx>) -> Option<Self>
sourceimpl PartialEq<PointerCast> for PointerCast
impl PartialEq<PointerCast> for PointerCast
sourcefn eq(&self, other: &PointerCast) -> bool
fn eq(&self, other: &PointerCast) -> bool
sourceimpl<'tcx> TypeFoldable<'tcx> for PointerCast
impl<'tcx> TypeFoldable<'tcx> for PointerCast
sourcefn try_fold_with<F: FallibleTypeFolder<'tcx>>(
self,
_: &mut F
) -> Result<PointerCast, F::Error>
fn try_fold_with<F: FallibleTypeFolder<'tcx>>(
self,
_: &mut F
) -> Result<PointerCast, F::Error>
sourcefn fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self
fn fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self
try_fold_with
for use with infallible
folders. Do not override this method, to ensure coherence with
try_fold_with
. Read moresourceimpl<'tcx> TypeVisitable<'tcx> for PointerCast
impl<'tcx> TypeVisitable<'tcx> for PointerCast
sourcefn visit_with<F: TypeVisitor<'tcx>>(&self, _: &mut F) -> ControlFlow<F::BreakTy>
fn visit_with<F: TypeVisitor<'tcx>>(&self, _: &mut F) -> ControlFlow<F::BreakTy>
sourcefn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool
fn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool
true
if self
has any late-bound regions that are either
bound by binder
or bound by some binder outside of binder
.
If binder
is ty::INNERMOST
, this indicates whether
there are any late-bound regions that appear free. Read moresourcefn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool
fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool
true
if this self
has any regions that escape binder
(and
hence are not bound by it). Read morefn has_escaping_bound_vars(&self) -> bool
fn has_type_flags(&self, flags: TypeFlags) -> bool
fn has_projections(&self) -> bool
fn has_opaque_types(&self) -> bool
fn references_error(&self) -> bool
fn error_reported(&self) -> Option<ErrorGuaranteed>
fn has_param_types_or_consts(&self) -> bool
fn has_infer_regions(&self) -> bool
fn has_infer_types(&self) -> bool
fn has_infer_types_or_consts(&self) -> bool
fn needs_infer(&self) -> bool
fn has_placeholders(&self) -> bool
fn needs_subst(&self) -> bool
sourcefn has_free_regions(&self) -> bool
fn has_free_regions(&self) -> bool
fn has_erased_regions(&self) -> bool
sourcefn has_erasable_regions(&self) -> bool
fn has_erasable_regions(&self) -> bool
sourcefn is_global(&self) -> bool
fn is_global(&self) -> bool
sourcefn has_late_bound_regions(&self) -> bool
fn has_late_bound_regions(&self) -> bool
sourcefn still_further_specializable(&self) -> bool
fn still_further_specializable(&self) -> bool
impl
specialization. Read moreimpl Copy for PointerCast
impl Eq for PointerCast
impl StructuralEq for PointerCast
impl StructuralPartialEq for PointerCast
Auto Trait Implementations
impl RefUnwindSafe for PointerCast
impl Send for PointerCast
impl Sync for PointerCast
impl Unpin for PointerCast
impl UnwindSafe for PointerCast
Blanket Implementations
sourceimpl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
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 Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
sourceimpl<Ctxt, T> DepNodeParams<Ctxt> for Twhere
Ctxt: DepContext,
T: for<'a> HashStable<StableHashingContext<'a>> + Debug,
impl<Ctxt, T> DepNodeParams<Ctxt> for Twhere
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
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>
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 moresourceimpl<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,
sourceimpl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
sourceimpl<CTX, T> Value<CTX> for Twhere
CTX: DepContext,
impl<CTX, T> Value<CTX> for Twhere
CTX: DepContext,
default fn from_cycle_error(tcx: CTX) -> T
impl<'a, T> Captures<'a> for Twhere
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: 1 byte
Size for each variant:
ReifyFnPointer
: 0 bytesUnsafeFnPointer
: 0 bytesClosureFnPointer
: 1 byteMutToConstPointer
: 0 bytesArrayToPointer
: 0 bytesUnsize
: 0 bytes