Enum rustc_middle::ty::layout::SizeSkeleton
source · Expand description
Type size “skeleton”, i.e., the only information determining a type’s size. While this is conservative, (aside from constant sizes, only pointers, newtypes thereof and null pointer optimized enums are allowed), it is enough to statically check common use cases of transmute.
Variants§
Implementations§
source§impl<'tcx> SizeSkeleton<'tcx>
impl<'tcx> SizeSkeleton<'tcx>
pub fn compute(
ty: Ty<'tcx>,
tcx: TyCtxt<'tcx>,
param_env: ParamEnv<'tcx>
) -> Result<SizeSkeleton<'tcx>, LayoutError<'tcx>>
pub fn same_size(self, other: SizeSkeleton<'tcx>) -> bool
Trait Implementations§
source§impl<'tcx> Clone for SizeSkeleton<'tcx>
impl<'tcx> Clone for SizeSkeleton<'tcx>
source§fn clone(&self) -> SizeSkeleton<'tcx>
fn clone(&self) -> SizeSkeleton<'tcx>
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl<'tcx> Debug for SizeSkeleton<'tcx>
impl<'tcx> Debug for SizeSkeleton<'tcx>
impl<'tcx> Copy for SizeSkeleton<'tcx>
Auto Trait Implementations§
impl<'tcx> !RefUnwindSafe for SizeSkeleton<'tcx>
impl<'tcx> !Send for SizeSkeleton<'tcx>
impl<'tcx> !Sync for SizeSkeleton<'tcx>
impl<'tcx> Unpin for SizeSkeleton<'tcx>
impl<'tcx> !UnwindSafe for SizeSkeleton<'tcx>
Blanket Implementations§
source§impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for Twhere
T: Copy,
fn allocate_on<'a>(self, arena: &'a Arena<'tcx>) -> &'a mut T
fn allocate_from_iter<'a>(
arena: &'a Arena<'tcx>,
iter: impl IntoIterator<Item = T>
) -> &'a mut [T] ⓘ
source§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: 16 bytes
Size for each variant:
Known
: 15 bytesPointer
: 15 bytes