Struct rustc_middle::infer::canonical::CanonicalVarValues[][src]

pub struct CanonicalVarValues<'tcx> {
    pub var_values: IndexVec<BoundVar, GenericArg<'tcx>>,

A set of values corresponding to the canonical variables from some Canonical. You can give these values to canonical_value.substitute to substitute them into the canonical value at the right places.

When you canonicalize a value V, you get back one of these vectors with the original values that were replaced by canonical variables. You will need to supply it later to instantiate the canonicalized query response.


var_values: IndexVec<BoundVar, GenericArg<'tcx>>


impl<'tcx> CanonicalVarValues<'tcx>[src]

pub fn len(&self) -> usize[src]

pub fn make_identity(&self, tcx: TyCtxt<'tcx>) -> Self[src]

Makes an identity substitution from this one: each bound var is matched to the same bound var, preserving the original kinds. For example, if we have: self.var_values == [Type(u32), Lifetime('a), Type(u64)] we’ll return a substitution subst with: subst.var_values == [Type(^0), Lifetime(^1), Type(^2)].

Trait Implementations

impl<'tcx> Clone for CanonicalVarValues<'tcx>[src]

impl<'tcx> Debug for CanonicalVarValues<'tcx>[src]

impl<'tcx, __D: TyDecoder<'tcx>> Decodable<__D> for CanonicalVarValues<'tcx>[src]

impl<'tcx, __E: TyEncoder<'tcx>> Encodable<__E> for CanonicalVarValues<'tcx>[src]

impl<'tcx> Eq for CanonicalVarValues<'tcx>[src]

impl<'tcx> Hash for CanonicalVarValues<'tcx>[src]

impl<'tcx, '__ctx> HashStable<StableHashingContext<'__ctx>> for CanonicalVarValues<'tcx>[src]

impl<'tcx> Index<BoundVar> for CanonicalVarValues<'tcx>[src]

type Output = GenericArg<'tcx>

The returned type after indexing.

impl<'a, 'tcx> IntoIterator for &'a CanonicalVarValues<'tcx>[src]

type Item = GenericArg<'tcx>

The type of the elements being iterated over.

type IntoIter = Cloned<Iter<'a, GenericArg<'tcx>>>

Which kind of iterator are we turning this into?

impl<'tcx, '__lifted> Lift<'__lifted> for CanonicalVarValues<'tcx>[src]

type Lifted = CanonicalVarValues<'__lifted>

impl<'tcx> PartialEq<CanonicalVarValues<'tcx>> for CanonicalVarValues<'tcx>[src]

impl<'tcx> StructuralEq for CanonicalVarValues<'tcx>[src]

impl<'tcx> StructuralPartialEq for CanonicalVarValues<'tcx>[src]

impl<'tcx> TypeFoldable<'tcx> for CanonicalVarValues<'tcx>[src]

Auto Trait Implementations

impl<'tcx> !RefUnwindSafe for CanonicalVarValues<'tcx>

impl<'tcx> !Send for CanonicalVarValues<'tcx>

impl<'tcx> !Sync for CanonicalVarValues<'tcx>

impl<'tcx> Unpin for CanonicalVarValues<'tcx>

impl<'tcx> !UnwindSafe for CanonicalVarValues<'tcx>

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized

impl<T> Borrow<T> for T where
    T: ?Sized

impl<T> BorrowMut<T> for T where
    T: ?Sized

impl<'a, T> Captures<'a> for T where
    T: ?Sized

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 

impl<T> MaybeResult<T> for T[src]

type Error = !

impl<'tcx, T> Subst<'tcx> for T where
    T: TypeFoldable<'tcx>, 

impl<T> ToOwned for T where
    T: Clone

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> WithConstness for T[src]