Struct rustc_middle::mir::PlaceRef

pub struct PlaceRef<'tcx> {
    pub local: Local,
    pub projection: &'tcx [PlaceElem<'tcx>],
}

Fields

local: Local

projection: &'tcx [PlaceElem<'tcx>]

Implementations

impl<'tcx> PlaceRef<'tcx>

pub fn local_or_deref_local(&self) -> Option<Local>

Finds the innermost Local from this Place, if it is either a local itself or a single deref of a local.

pub fn is_indirect(&self) -> bool

Returns true if this Place contains a Deref projection.

If Place::is_indirect returns false, the caller knows that the Place refers to the same region of memory as its base.

pub fn is_indirect_first_projection(&self) -> bool

Returns true if this Place’s first projection is Deref.

This is useful because for MIR phases AnalysisPhase::PostCleanup and later, Deref projections can only occur as the first projection. In that case this method is equivalent to is_indirect, but faster.

pub fn as_local(&self) -> Option<Local>

If this place represents a local variable like _X with no projections, return Some(_X).

pub fn last_projection(&self) -> Option<(PlaceRef<'tcx>, PlaceElem<'tcx>)>

pub fn iter_projections( self ) -> impl Iterator<Item = (PlaceRef<'tcx>, PlaceElem<'tcx>)> + DoubleEndedIterator

Iterate over the projections in evaluation order, i.e., the first element is the base with its projection and then subsequently more projections are added. As a concrete example, given the place a.b.c, this would yield:

• (a, .b)
• (a.b, .c)

Given a place without projections, the iterator is empty.

pub fn project_deeper( self, more_projections: &[PlaceElem<'tcx>], tcx: TyCtxt<'tcx> ) -> Place<'tcx>

Generates a new place by appending more_projections to the existing ones and interning the result.

impl<'tcx> PlaceRef<'tcx>

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

where D: HasLocalDecls<'tcx> + ?Sized,

Trait Implementations

impl<'tcx> Clone for PlaceRef<'tcx>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PlaceRef<'_>

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

Formats the value using the given formatter.

impl From<Local> for PlaceRef<'_>

fn from(local: Local) -> Self

Converts to this type from the input type.

impl<'tcx> Hash for PlaceRef<'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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<'tcx> PartialEq for PlaceRef<'tcx>

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

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

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'tcx> !PartialOrd for PlaceRef<'tcx>

fn partial_cmp(&self, other: &Rhs) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl<'tcx> Copy for PlaceRef<'tcx>

impl<'tcx> Eq for PlaceRef<'tcx>

impl<'tcx> StructuralPartialEq for PlaceRef<'tcx>

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: 24 bytes