Enum Place 

pub enum Place {
    Local(SlotId),
    Field(Box<Place>, FieldIdx),
    Index(Box<Place>, Box<Operand>),
    Deref(Box<Place>),
}

A place is something that can be borrowed or assigned to. Tracks granular access paths for disjoint borrow analysis.

Variants

Local(SlotId)

A local variable: x

Field(Box<Place>, FieldIdx)

A field of a place: x.field_name

Index(Box<Place>, Box<Operand>)

An index into a place: x[i] — index analysis is conservative in v1. The index operand is boxed to break the recursive type cycle (Place → Operand → Place).

Deref(Box<Place>)

Dereferencing a reference: *r

Implementations

impl Place

pub fn root_local(&self) -> SlotId

Get the root local of this place (e.g., x.a.b → x).

pub fn is_prefix_of(&self, other: &Place) -> bool

Check if this place is a prefix of another (for conflict detection). x is a prefix of x.a, x is a prefix of x[i], etc.

pub fn conflicts_with(&self, other: &Place) -> bool

Check whether two places conflict (one borrows/writes something the other uses). Two places conflict if one is a prefix of the other, or they’re the same. In v1, disjoint field borrows are tracked (x.a and x.b don’t conflict), but index borrows are conservative (x[i] and x[j] always conflict).

pub fn projection_steps(&self) -> Vec<ProjectionStep>

Return a normalized projection summary from the root local to this place.

Trait Implementations

impl Clone for Place

fn clone(&self) -> Place

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Place

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

Formats the value using the given formatter.

impl Display for Place

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

Formats the value using the given formatter.

impl Hash for Place

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 PartialEq for Place

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Eq for Place

impl StructuralPartialEq for Place