Struct rustc_type_ir::CanonicalVarInfo

pub struct CanonicalVarInfo<I: Interner> {
    pub kind: CanonicalVarKind<I>,
}

Information about a canonical variable that is included with the canonical value. This is sufficient information for code to create a copy of the canonical value in some other inference context, with fresh inference variables replacing the canonical values.

Fields

kind: CanonicalVarKind<I>

Implementations

impl<I: Interner> CanonicalVarInfo<I>

pub fn universe(self) -> UniverseIndex

pub fn with_updated_universe(self, ui: UniverseIndex) -> CanonicalVarInfo<I>

pub fn is_existential(&self) -> bool

pub fn is_region(&self) -> bool

pub fn expect_placeholder_index(self) -> usize

Trait Implementations

impl<I: Interner> Clone for CanonicalVarInfo<I>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<I: Interner> Debug for CanonicalVarInfo<I>

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

Formats the value using the given formatter.

impl<I: Interner, __D: TyDecoder<I = I>> Decodable<__D> for CanonicalVarInfo<I>

where CanonicalVarKind<I>: Decodable<__D>,

fn decode(__decoder: &mut __D) -> Self

impl<I: Interner, __E: TyEncoder<I = I>> Encodable<__E> for CanonicalVarInfo<I>

where CanonicalVarKind<I>: Encodable<__E>,

fn encode(&self, __encoder: &mut __E)

impl<I: Interner> Hash for CanonicalVarInfo<I>

fn hash<__HI>(&self, __state: &mut __HI)

where __HI: Hasher,

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<I: Interner, __CTX> HashStable<__CTX> for CanonicalVarInfo<I>

where CanonicalVarKind<I>: HashStable<__CTX>,

fn hash_stable(&self, __hcx: &mut __CTX, __hasher: &mut StableHasher)

impl<I: Interner> PartialEq for CanonicalVarInfo<I>

fn eq(&self, other: &Self) -> 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: Interner> TypeFoldable<I> for CanonicalVarInfo<I>

where I::Ty: TypeFoldable<I>,

fn try_fold_with<F: FallibleTypeFolder<I>>( self, folder: &mut F ) -> Result<Self, F::Error>

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f).

fn fold_with<F: TypeFolder<I>>(self, folder: &mut F) -> 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: Interner> TypeVisitable<I> for CanonicalVarInfo<I>

where I::Ty: TypeVisitable<I>,

fn visit_with<V: TypeVisitor<I>>( &self, visitor: &mut V ) -> ControlFlow<V::BreakTy>

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v).

impl<I: Interner> Copy for CanonicalVarInfo<I>

impl<I: Interner> Eq for CanonicalVarInfo<I>

Layout

Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.