Struct chalk_ir::Canonical

pub struct Canonical<T: HasInterner> {
    pub value: T,
    pub binders: CanonicalVarKinds<T::Interner>,
}

Wraps a “canonicalized item”. Items are canonicalized as follows:

All unresolved existential variables are “renumbered” according to their first appearance; the kind/universe of the variable is recorded in the binders field.

Fields

value: T

The item that is canonicalized.

binders: CanonicalVarKinds<T::Interner>

The kind/universe of the variable.

Implementations

impl<T: HasInterner + Display> Canonical<T>

pub fn display(&self, interner: T::Interner) -> CanonicalDisplay<'_, T>

Display the canonicalized item.

Trait Implementations

impl<T, U> CastTo<Canonical<U>> for Canonical<T>

where T: CastTo<U> + HasInterner, U: HasInterner<Interner = T::Interner>,

fn cast_to(self, interner: T::Interner) -> Canonical<U>

Cast a value to type T.

impl<T: Clone + HasInterner> Clone for Canonical<T>

where T::Interner: Clone,

fn clone(&self) -> Canonical<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug + HasInterner> Debug for Canonical<T>

where T::Interner: Debug,

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

Formats the value using the given formatter.

impl<T: HasInterner> HasInterner for Canonical<T>

type Interner = <T as HasInterner>::Interner

The interner associated with the type.

impl<T: Hash + HasInterner> Hash for Canonical<T>

where T::Interner: Hash,

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<T: PartialEq + HasInterner> PartialEq for Canonical<T>

where T::Interner: PartialEq,

fn eq(&self, other: &Canonical<T>) -> 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<I, T> TypeFoldable<I> for Canonical<T>

where I: Interner, T: HasInterner<Interner = I> + TypeFoldable<I>,

fn try_fold_with<E>( self, folder: &mut dyn FallibleTypeFolder<I, Error = E>, outer_binder: DebruijnIndex, ) -> Result<Self, E>

Apply the given folder folder to self; binders is the number of binders that are in scope when beginning the folder. Typically binders starts as 0, but is adjusted when we encounter Binders<T> in the IR or other similar constructs.

fn fold_with( self, folder: &mut dyn TypeFolder<I>, outer_binder: DebruijnIndex, ) -> Self

A convenient alternative to try_fold_with for use with infallible folders. Do not override this method, to ensure coherence with try_fold_with.

impl<I, T> TypeVisitable<I> for Canonical<T>

where I: Interner, T: HasInterner<Interner = I> + TypeVisitable<I>,

fn visit_with<B>( &self, visitor: &mut dyn TypeVisitor<I, BreakTy = B>, outer_binder: DebruijnIndex, ) -> ControlFlow<B>

Apply the given visitor visitor to self; binders is the number of binders that are in scope when beginning the visitor. Typically binders starts as 0, but is adjusted when we encounter Binders<T> in the IR or other similar constructs.

impl<T: Eq + HasInterner> Eq for Canonical<T>

where T::Interner: Eq,

impl<T: HasInterner> StructuralPartialEq for Canonical<T>