Struct rustc_middle::hir::place::Place

pub struct Place<'tcx> {
    pub base_ty: Ty<'tcx>,
    pub base: PlaceBase,
    pub projections: Vec<Projection<'tcx>>,
}

A Place represents how a value is located in memory.

This is an HIR version of rustc_middle::mir::Place.

Fields

base_ty: Ty<'tcx>

The type of the PlaceBase

base: PlaceBase

The “outermost” place that holds this value.

projections: Vec<Projection<'tcx>>

How this place is derived from the base place.

Implementations

impl<'tcx> Place<'tcx>

pub fn deref_tys(&self) -> impl Iterator<Item = Ty<'tcx>> + '_

Returns an iterator of the types that have to be dereferenced to access the Place.

The types are in the reverse order that they are applied. So if x: &*const u32 and the Place is **x, then the types returned are *const u32 then &*const u32.

pub fn ty(&self) -> Ty<'tcx>

Returns the type of this Place after all projections have been applied.

pub fn ty_before_projection(&self, projection_index: usize) -> Ty<'tcx>

Returns the type of this Place immediately before projection_indexth projection is applied.

Trait Implementations

impl<'tcx> Clone for Place<'tcx>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'tcx> Debug for Place<'tcx>

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

Formats the value using the given formatter.

impl<'tcx, __D: TyDecoder<'tcx>> Decodable<__D> for Place<'tcx>

fn decode(__decoder: &mut __D) -> Result<Self, <__D as Decoder>::Error>

impl<'tcx, __E: TyEncoder<'tcx>> Encodable<__E> for Place<'tcx>

fn encode(&self, __encoder: &mut __E) -> Result<(), <__E as Encoder>::Error>

impl<'tcx> Eq for Place<'tcx>

impl<'tcx> Hash for Place<'tcx>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

pub fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for Place<'tcx>

fn hash_stable(
    &self,
    __hcx: &mut StableHashingContext<'__ctx>,
    __hasher: &mut StableHasher
)

impl<'tcx> PartialEq<Place<'tcx>> for Place<'tcx>

fn eq(&self, other: &Place<'tcx>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Place<'tcx>) -> bool

This method tests for !=.

impl<'tcx> StructuralEq for Place<'tcx>

impl<'tcx> StructuralPartialEq for Place<'tcx>

impl<'tcx> TypeFoldable<'tcx> for Place<'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.