Struct rustc_middle::mir::tcx::PlaceTy

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, if included.

Implementations

impl<'tcx> PlaceTy<'tcx>

pub fn from_ty(ty: Ty<'tcx>) -> PlaceTy<'tcx>

pub fn field_ty(self, tcx: TyCtxt<'tcx>, f: &Field) -> 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.

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.

pub fn projection_ty_core<V, T>(
    self,
    tcx: TyCtxt<'tcx>,
    param_env: ParamEnv<'tcx>,
    elem: &ProjectionElem<V, T>,
    handle_field: impl FnMut(&Self, &Field, &T) -> Ty<'tcx>
) -> PlaceTy<'tcx> where
    V: Debug,
    T: Debug, 

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 Field to its Ty, (which should be trivial when T = Ty).

Trait Implementations

impl<'tcx> Clone for PlaceTy<'tcx>

fn clone(&self) -> PlaceTy<'tcx>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'tcx> Debug for PlaceTy<'tcx>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'tcx> TypeFoldable<'tcx> for PlaceTy<'tcx>

fn super_fold_with<__F: TypeFolder<'tcx>>(self, __folder: &mut __F) -> Self

fn super_visit_with<__F: TypeVisitor<'tcx>>(
    &self,
    __folder: &mut __F
) -> ControlFlow<__F::BreakTy>

fn fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self

fn visit_with<V: TypeVisitor<'tcx>>(
    &self,
    visitor: &mut V
) -> ControlFlow<V::BreakTy>

fn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool

Returns 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.

fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool

Returns true if this self has any regions that escape binder (and hence are not bound by it).

fn 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 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

fn has_free_regions(&self) -> bool

“Free” regions in this context means that it has any region that is not (a) erased or (b) late-bound.

fn has_erased_regions(&self) -> bool

fn has_erasable_regions(&self) -> bool

True if there are any un-erased free regions.

fn is_global(&self) -> bool

Indicates whether this value references only ‘global’ generic parameters that are the same regardless of what fn we are in. This is used for caching.

fn has_late_bound_regions(&self) -> bool

True if there are any late-bound regions

fn still_further_specializable(&self) -> bool

Indicates whether this value still has parameters/placeholders/inference variables which could be replaced later, in a way that would change the results of impl specialization.

impl<'tcx> Copy for PlaceTy<'tcx>