pub enum PointerCoercion {
ReifyFnPointer,
UnsafeFnPointer,
ClosureFnPointer(Safety),
MutToConstPointer,
ArrayToPointer,
Unsize,
DynStar,
}
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(Safety)
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 wide pointer.
This will do things like convert thin pointers to wide
pointers, or convert structs containing thin pointers to
structs containing wide pointers, or convert between wide
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.
DynStar
Go from a pointer-like type to a dyn*
object.
Trait Implementations§
Source§impl Clone for PointerCoercion
impl Clone for PointerCoercion
Source§fn clone(&self) -> PointerCoercion
fn clone(&self) -> PointerCoercion
Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreSource§impl Debug for PointerCoercion
impl Debug for PointerCoercion
Source§impl<__D: TyDecoder> Decodable<__D> for PointerCoercion
impl<__D: TyDecoder> Decodable<__D> for PointerCoercion
Source§impl<__E: TyEncoder> Encodable<__E> for PointerCoercion
impl<__E: TyEncoder> Encodable<__E> for PointerCoercion
Source§impl Hash for PointerCoercion
impl Hash for PointerCoercion
Source§impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for PointerCoercion
impl<'__ctx> HashStable<StableHashingContext<'__ctx>> for PointerCoercion
fn hash_stable( &self, __hcx: &mut StableHashingContext<'__ctx>, __hasher: &mut StableHasher, )
Source§impl PartialEq for PointerCoercion
impl PartialEq for PointerCoercion
Source§impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for PointerCoercion
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for PointerCoercion
Source§fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>(
self,
_: &mut F,
) -> Result<Self, F::Error>
fn try_fold_with<F: FallibleTypeFolder<TyCtxt<'tcx>>>( self, _: &mut F, ) -> Result<Self, F::Error>
Source§impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for PointerCoercion
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for PointerCoercion
Source§fn visit_with<F: TypeVisitor<TyCtxt<'tcx>>>(&self, _: &mut F) -> F::Result
fn visit_with<F: TypeVisitor<TyCtxt<'tcx>>>(&self, _: &mut F) -> F::Result
impl Copy for PointerCoercion
impl Eq for PointerCoercion
impl StructuralPartialEq for PointerCoercion
Auto Trait Implementations§
impl DynSend for PointerCoercion
impl DynSync for PointerCoercion
impl Freeze for PointerCoercion
impl RefUnwindSafe for PointerCoercion
impl Send for PointerCoercion
impl Sync for PointerCoercion
impl Unpin for PointerCoercion
impl UnwindSafe for PointerCoercion
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fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]
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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 bytesDynStar
: 0 bytes