rustc_type_ir::canonical

Struct CanonicalVarValues

Source 
pub struct CanonicalVarValues<I: Interner> {
    pub var_values: I::GenericArgs,
}
Expand description

A set of values corresponding to the canonical variables from some Canonical. You can give these values to canonical_value.instantiate to instantiate 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.

Fields§

§var_values: I::GenericArgs

Implementations§

Source§

impl<I: Interner> CanonicalVarValues<I>

Source

pub fn is_identity(&self) -> bool

Source

pub fn is_identity_modulo_regions(&self) -> bool

Source

pub fn make_identity(cx: I, infos: I::CanonicalVars) -> CanonicalVarValues<I>

Source

pub fn dummy() -> CanonicalVarValues<I>

Creates dummy var values which should not be used in a canonical response.

Source

pub fn len(&self) -> usize

Trait Implementations§

Source§

impl<I> Clone for CanonicalVarValues<I>
where I: Interner,

Source§

fn clone(&self) -> Self

Returns a copy of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
Source§

impl<I> Debug for CanonicalVarValues<I>
where I: Interner,

Source§

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

Formats the value using the given formatter. Read more
Source§

impl<I: Interner, __D: TyDecoder<I = I>> Decodable<__D> for CanonicalVarValues<I>
where I::GenericArgs: Decodable<__D>,

Source§

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

Source§

impl<I: Interner, __E: TyEncoder<I = I>> Encodable<__E> for CanonicalVarValues<I>
where I::GenericArgs: Encodable<__E>,

Source§

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

Source§

impl<I> Hash for CanonicalVarValues<I>
where I: Interner,

Source§

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

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
Source§

impl<I: Interner, __CTX> HashStable<__CTX> for CanonicalVarValues<I>
where I::GenericArgs: HashStable<__CTX>,

Source§

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

Source§

impl<I: Interner> Index<BoundVar> for CanonicalVarValues<I>

Source§

type Output = <I as Interner>::GenericArg

The returned type after indexing.
Source§

fn index(&self, value: BoundVar) -> &I::GenericArg

Performs the indexing (container[index]) operation. Read more
Source§

impl<'a, I: Interner> IntoIterator for &'a CanonicalVarValues<I>

Source§

type Item = <I as Interner>::GenericArg

The type of the elements being iterated over.
Source§

type IntoIter = <<I as Interner>::GenericArgs as SliceLike>::IntoIter

Which kind of iterator are we turning this into?
Source§

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value. Read more
Source§

impl<I, J> Lift<J> for CanonicalVarValues<I>
where I: Interner, J: Interner, I::GenericArgs: Lift<J, Lifted = J::GenericArgs>,

Source§

type Lifted = CanonicalVarValues<J>

Source§

fn lift_to_interner(self, interner: J) -> Option<Self::Lifted>

Source§

impl<I> PartialEq for CanonicalVarValues<I>
where I: Interner,

Source§

fn eq(&self, __other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 · Source§

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

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

impl<I> TypeFoldable<I> for CanonicalVarValues<I>
where I: Interner, I::GenericArgs: TypeFoldable<I>,

Source§

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). Read more
Source§

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.
Source§

impl<I> TypeVisitable<I> for CanonicalVarValues<I>
where I: Interner, I::GenericArgs: TypeVisitable<I>,

Source§

fn visit_with<__V: TypeVisitor<I>>(&self, __visitor: &mut __V) -> __V::Result

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

impl<I> Copy for CanonicalVarValues<I>
where I: Interner,

Source§

impl<I> Eq for CanonicalVarValues<I>
where I: Interner,

Auto Trait Implementations§

Blanket Implementations§

Source§

impl<T> Aligned for T

Source§

const ALIGN: Alignment = _

Alignment of Self.
Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

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

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

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

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> CloneToUninit for T
where T: Clone,

Source§

unsafe fn clone_to_uninit(&self, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
Source§

impl<T, R> CollectAndApply<T, R> for T

Source§

fn collect_and_apply<I, F>(iter: I, f: F) -> R
where I: Iterator<Item = T>, F: FnOnce(&[T]) -> R,

Equivalent to f(&iter.collect::<Vec<_>>()).

Source§

type Output = R

Source§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

Source§

fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
Source§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

Source§

fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
Source§

impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

Source§

fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T> Instrument for T

Source§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Source§

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

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> IntoEither for T

Source§

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

impl<T> Pointable for T

Source§

const ALIGN: usize = _

The alignment of pointer.
Source§

type Init = T

The type for initializers.
Source§

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
Source§

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
Source§

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
Source§

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
Source§

impl<T> Same for T

Source§

type Output = T

Should always be Self
Source§

impl<T> ToOwned for T
where T: Clone,

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

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

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

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

Source§

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

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
Source§

impl<I, T> TypeVisitableExt<I> for T
where I: Interner, T: TypeVisitable<I>,

Source§

fn has_type_flags(&self, flags: TypeFlags) -> bool

Source§

fn has_vars_bound_at_or_above(&self, binder: DebruijnIndex) -> bool

Returns true if self has any late-bound regions that are either bound by binder or bound by some binder outside of binder. If binder is ty::INNERMOST, this indicates whether there are any late-bound regions that appear free.
Source§

fn error_reported(&self) -> Result<(), <I as Interner>::ErrorGuaranteed>

Source§

fn has_vars_bound_above(&self, binder: DebruijnIndex) -> bool

Returns true if this type has any regions that escape binder (and hence are not bound by it).
Source§

fn has_escaping_bound_vars(&self) -> bool

Return true if this type has regions that are not a part of the type. For example, for<'a> fn(&'a i32) return false, while fn(&'a i32) would return true. The latter can occur when traversing through the former. Read more
Source§

fn has_aliases(&self) -> bool

Source§

fn has_opaque_types(&self) -> bool

Source§

fn has_coroutines(&self) -> bool

Source§

fn references_error(&self) -> bool

Source§

fn has_non_region_param(&self) -> bool

Source§

fn has_infer_regions(&self) -> bool

Source§

fn has_infer_types(&self) -> bool

Source§

fn has_non_region_infer(&self) -> bool

Source§

fn has_infer(&self) -> bool

Source§

fn has_placeholders(&self) -> bool

Source§

fn has_non_region_placeholders(&self) -> bool

Source§

fn has_param(&self) -> bool

Source§

fn has_free_regions(&self) -> bool

“Free” regions in this context means that it has any region that is not (a) erased or (b) late-bound.
Source§

fn has_erased_regions(&self) -> bool

Source§

fn has_erasable_regions(&self) -> bool

True if there are any un-erased free regions.
Source§

fn is_global(&self) -> bool

Indicates whether this value references only ‘global’ generic parameters that are the same regardless of what fn we are in. This is used for caching.
Source§

fn has_bound_regions(&self) -> bool

True if there are any late-bound regions
Source§

fn has_non_region_bound_vars(&self) -> bool

True if there are any late-bound non-region variables
Source§

fn has_bound_vars(&self) -> bool

True if there are any bound variables
Source§

fn still_further_specializable(&self) -> bool

Indicates whether this value still has parameters/placeholders/inference variables which could be replaced later, in a way that would change the results of impl specialization.
Source§

impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

Source§

fn upcast(self, interner: I) -> U

Source§

impl<I, T> UpcastFrom<I, T> for T

Source§

fn upcast_from(from: T, _tcx: I) -> T

Source§

impl<T> WithSubscriber for T

Source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

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

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.