Enum rustc::mir::Place

pub enum Place<'tcx> {
    Local(Local),
    Static(Box<Static<'tcx>>),
    Promoted(Box<(Promoted, Ty<'tcx>)>),
    Projection(Box<PlaceProjection<'tcx>>),
}

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A path to a value; something that can be evaluated without changing or disturbing program state.

Variants

Local(Local)

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local variable

Static(Box<Static<'tcx>>)

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static or static mut variable

Promoted(Box<(Promoted, Ty<'tcx>)>)

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Constant code promoted to an injected static

Projection(Box<PlaceProjection<'tcx>>)

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projection out of a place (access a field, deref a pointer, etc)

Methods

impl<'tcx> Place<'tcx>

pub fn ty<'a, 'gcx, D>(     &self,     local_decls: &D,     tcx: TyCtxt<'a, 'gcx, 'tcx> ) -> PlaceTy<'tcx> where     D: HasLocalDecls<'tcx>,

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pub fn is_upvar_field_projection<'cx, 'gcx>(     &self,     mir: &'cx Mir<'tcx>,     tcx: &TyCtxt<'cx, 'gcx, 'tcx> ) -> Option<Field>

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If this is a field projection, and the field is being projected from a closure type, then returns the index of the field being projected. Note that this closure will always be self in the current MIR, because that is the only time we directly access the fields of a closure type.

impl<'tcx> Place<'tcx>

pub fn field(self, f: Field, ty: Ty<'tcx>) -> Place<'tcx>

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pub fn deref(self) -> Place<'tcx>

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pub fn downcast(     self,     adt_def: &'tcx AdtDef,     variant_index: usize ) -> Place<'tcx>

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pub fn index(self, index: Local) -> Place<'tcx>

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pub fn elem(self, elem: PlaceElem<'tcx>) -> Place<'tcx>

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Trait Implementations

impl<'a, 'gcx> HashStable<StableHashingContext<'a>> for Place<'gcx>

fn hash_stable<W: StableHasherResult>(     &self,     hcx: &mut StableHashingContext<'a>,     hasher: &mut StableHasher<W> )

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

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

Returns a copy of the value.

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

Performs copy-assignment from source.

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

fn assert_receiver_is_total_eq(&self)

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

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

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl<'tcx> Encodable for Place<'tcx>

fn encode<__S: Encoder>(&self, s: &mut __S) -> Result<(), __S::Error>

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impl<'tcx> Decodable for Place<'tcx>

fn decode<__D: Decoder>(d: &mut __D) -> Result<Place<'tcx>, __D::Error>

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

fn fmt(&self, fmt: &mut Formatter) -> Result

Formats the value using the given formatter.

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

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

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fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> bool

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

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

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

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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_regions_bound_above(&self, binder: DebruijnIndex) -> bool

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

fn has_escaping_regions(&self) -> bool

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fn has_type_flags(&self, flags: TypeFlags) -> bool

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fn has_projections(&self) -> bool

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fn references_error(&self) -> bool

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fn has_param_types(&self) -> bool

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fn has_self_ty(&self) -> bool

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fn has_infer_types(&self) -> bool

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fn needs_infer(&self) -> bool

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fn has_skol(&self) -> bool

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fn needs_subst(&self) -> bool

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fn has_re_skol(&self) -> bool

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fn has_closure_types(&self) -> bool

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fn has_free_regions(&self) -> bool

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

fn has_erasable_regions(&self) -> bool

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True if there any any un-erased free regions.

fn is_global(&self) -> bool

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Indicates whether this value references only 'global' types/lifetimes that are the same regardless of what fn we are in. This is used for caching.

fn has_late_bound_regions(&self) -> bool

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True if there are any late-bound regions

fn visit_tys_shallow(     &self,     visit: impl FnMut(Ty<'tcx>) -> bool ) -> bool

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A visitor that does not recurse into types, works like fn walk_shallow in Ty.