Struct rustc_middle::mir::tcx::PlaceTy
source · pub struct PlaceTy<'tcx> {
pub ty: Ty<'tcx>,
pub variant_index: Option<VariantIdx>,
}
Fields§
§ty: Ty<'tcx>
§variant_index: Option<VariantIdx>
Downcast to a particular variant of an enum or a generator, if included.
Implementations§
source§impl<'tcx> PlaceTy<'tcx>
impl<'tcx> PlaceTy<'tcx>
pub fn from_ty(ty: Ty<'tcx>) -> PlaceTy<'tcx>
sourcepub fn field_ty(self, tcx: TyCtxt<'tcx>, f: FieldIdx) -> Ty<'tcx>
pub fn field_ty(self, tcx: TyCtxt<'tcx>, f: FieldIdx) -> Ty<'tcx>
place_ty.field_ty(tcx, f)
computes the type at a given field
of a record or enum-variant. (Most clients of PlaceTy
can
instead just extract the relevant type directly from their
PlaceElem
, but some instances of ProjectionElem<V, T>
do
not carry a Ty
for T
.)
Note that the resulting type has not been normalized.
sourcepub fn projection_ty(
self,
tcx: TyCtxt<'tcx>,
elem: PlaceElem<'tcx>
) -> PlaceTy<'tcx>
pub fn projection_ty( self, tcx: TyCtxt<'tcx>, elem: PlaceElem<'tcx> ) -> PlaceTy<'tcx>
Convenience wrapper around projection_ty_core
for
PlaceElem
, where we can just use the Ty
that is already
stored inline on field projection elems.
sourcepub fn projection_ty_core<V, T>(
self,
tcx: TyCtxt<'tcx>,
param_env: ParamEnv<'tcx>,
elem: &ProjectionElem<V, T>,
handle_field: impl FnMut(&Self, FieldIdx, T) -> Ty<'tcx>,
handle_opaque_cast_and_subtype: impl FnMut(&Self, T) -> Ty<'tcx>
) -> PlaceTy<'tcx>where
V: Debug,
T: Debug + Copy,
pub fn projection_ty_core<V, T>( self, tcx: TyCtxt<'tcx>, param_env: ParamEnv<'tcx>, elem: &ProjectionElem<V, T>, handle_field: impl FnMut(&Self, FieldIdx, T) -> Ty<'tcx>, handle_opaque_cast_and_subtype: impl FnMut(&Self, T) -> Ty<'tcx> ) -> PlaceTy<'tcx>where V: Debug, T: Debug + Copy,
place_ty.projection_ty_core(tcx, elem, |...| { ... })
projects place_ty
onto elem
, returning the appropriate
Ty
or downcast variant corresponding to that projection.
The handle_field
callback must map a FieldIdx
to its Ty
,
(which should be trivial when T
= Ty
).
Trait Implementations§
source§impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for PlaceTy<'tcx>
impl<'tcx> TypeFoldable<TyCtxt<'tcx>> for PlaceTy<'tcx>
source§fn try_fold_with<__F: FallibleTypeFolder<TyCtxt<'tcx>>>(
self,
__folder: &mut __F
) -> Result<Self, __F::Error>
fn try_fold_with<__F: FallibleTypeFolder<TyCtxt<'tcx>>>( self, __folder: &mut __F ) -> Result<Self, __F::Error>
source§fn fold_with<F>(self, folder: &mut F) -> Selfwhere
F: TypeFolder<I>,
fn fold_with<F>(self, folder: &mut F) -> Selfwhere F: TypeFolder<I>,
try_fold_with
for use with infallible
folders. Do not override this method, to ensure coherence with
try_fold_with
.source§impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for PlaceTy<'tcx>
impl<'tcx> TypeVisitable<TyCtxt<'tcx>> for PlaceTy<'tcx>
source§fn visit_with<__V: TypeVisitor<TyCtxt<'tcx>>>(
&self,
__visitor: &mut __V
) -> ControlFlow<__V::BreakTy>
fn visit_with<__V: TypeVisitor<TyCtxt<'tcx>>>( &self, __visitor: &mut __V ) -> ControlFlow<__V::BreakTy>
impl<'tcx> Copy for PlaceTy<'tcx>
Auto Trait Implementations§
impl<'tcx> !RefUnwindSafe for PlaceTy<'tcx>
impl<'tcx> Send for PlaceTy<'tcx>
impl<'tcx> Sync for PlaceTy<'tcx>
impl<'tcx> Unpin for PlaceTy<'tcx>
impl<'tcx> !UnwindSafe for PlaceTy<'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> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
source§impl<P> IntoQueryParam<P> for P
impl<P> IntoQueryParam<P> for P
fn into_query_param(self) -> P
source§impl<'tcx, T> IsSuggestable<'tcx> for Twhere
T: TypeVisitable<TyCtxt<'tcx>> + TypeFoldable<TyCtxt<'tcx>>,
impl<'tcx, T> IsSuggestable<'tcx> for Twhere T: TypeVisitable<TyCtxt<'tcx>> + TypeFoldable<TyCtxt<'tcx>>,
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> TypeVisitableExt<'tcx> for Twhere
T: TypeVisitable<TyCtxt<'tcx>>,
impl<'tcx, T> TypeVisitableExt<'tcx> for Twhere T: TypeVisitable<TyCtxt<'tcx>>,
source§fn 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.source§fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool
fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool
true
if this type has any regions that escape binder
(and
hence are not bound by it).source§fn has_escaping_bound_vars(&self) -> bool
fn has_escaping_bound_vars(&self) -> bool
true
if this type has regions that are not a part of the type.
For example, for<'a> fn(&'a i32)
return false
, while fn(&'a i32)
would return true
. The latter can occur when traversing through the
former. Read morefn has_type_flags(&self, flags: TypeFlags) -> bool
fn has_projections(&self) -> bool
fn has_inherent_projections(&self) -> bool
fn has_opaque_types(&self) -> bool
fn has_generators(&self) -> bool
fn references_error(&self) -> bool
fn error_reported(&self) -> Result<(), ErrorGuaranteed>
fn has_non_region_param(&self) -> bool
fn has_infer_regions(&self) -> bool
fn has_infer_types(&self) -> bool
fn has_non_region_infer(&self) -> bool
fn has_infer(&self) -> bool
fn has_placeholders(&self) -> bool
fn has_non_region_placeholders(&self) -> bool
fn has_param(&self) -> bool
source§fn has_free_regions(&self) -> bool
fn has_free_regions(&self) -> bool
fn has_erased_regions(&self) -> bool
source§fn has_erasable_regions(&self) -> bool
fn has_erasable_regions(&self) -> bool
source§fn is_global(&self) -> bool
fn is_global(&self) -> bool
source§fn has_late_bound_regions(&self) -> bool
fn has_late_bound_regions(&self) -> bool
source§fn has_non_region_late_bound(&self) -> bool
fn has_non_region_late_bound(&self) -> bool
source§fn has_late_bound_vars(&self) -> bool
fn has_late_bound_vars(&self) -> bool
source§fn still_further_specializable(&self) -> bool
fn still_further_specializable(&self) -> bool
impl
specialization.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, 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