rustc_trait_selection::infer::canonical::ir

Struct CanonicalVarInfo

Source 
pub struct CanonicalVarInfo<I>
where
    I: Interner,
{
    pub kind: CanonicalVarKind<I>,
}
Expand description

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§

Trait Implementations§

Source§

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

Source§

fn clone(&self) -> CanonicalVarInfo<I>

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 CanonicalVarInfo<I>
where I: Interner,

Source§

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

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

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

Source§

fn decode(__decoder: &mut __D) -> CanonicalVarInfo<I>

Source§

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

Source§

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

Source§

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

Source§

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

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

Source§

fn hash_stable( &self, __hcx: &mut __CTX, __hasher: &mut StableHasher<SipHasher128>, )

Source§

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

Source§

fn eq(&self, __other: &CanonicalVarInfo<I>) -> 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 CanonicalVarInfo<I>
where I: Interner, CanonicalVarKind<I>: TypeFoldable<I>,

Source§

fn try_fold_with<__F>( self, __folder: &mut __F, ) -> Result<CanonicalVarInfo<I>, <__F as FallibleTypeFolder<I>>::Error>
where __F: FallibleTypeFolder<I>,

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>(self, folder: &mut F) -> Self
where F: TypeFolder<I>,

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 CanonicalVarInfo<I>
where I: Interner, CanonicalVarKind<I>: TypeVisitable<I>,

Source§

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

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 CanonicalVarInfo<I>
where I: Interner,

Source§

impl<I> Eq for CanonicalVarInfo<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> AnyEq for T
where T: Any + PartialEq,

Source§

fn equals(&self, other: &(dyn Any + 'static)) -> bool

Source§

fn as_any(&self) -> &(dyn Any + 'static)

Source§

impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

Source§

fn allocate_on(self, arena: &'tcx Arena<'tcx>) -> &'tcx mut T

Source§

fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]

Source§

impl<'tcx, T> ArenaAllocatable<'tcx, IsCopy> for T
where T: Copy,

Source§

fn allocate_on(self, arena: &'tcx Arena<'tcx>) -> &'tcx mut T

Source§

fn allocate_from_iter( arena: &'tcx Arena<'tcx>, iter: impl IntoIterator<Item = T>, ) -> &'tcx mut [T]

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 T)

🔬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<Tcx, T> DepNodeParams<Tcx> for T
where Tcx: DepContext, T: for<'a> HashStable<StableHashingContext<'a>> + Debug,

Source§

default fn fingerprint_style() -> FingerprintStyle

Source§

default fn to_fingerprint(&self, tcx: Tcx) -> Fingerprint

This method turns the parameters of a DepNodeConstructor into an opaque Fingerprint to be used in DepNode. Not all DepNodeParams support being turned into a Fingerprint (they don’t need to if the corresponding DepNode is anonymous).
Source§

default fn to_debug_str(&self, _: Tcx) -> String

Source§

default fn recover(_: Tcx, _: &DepNode) -> Option<T>

This method tries to recover the query key from the given DepNode, something which is needed when forcing DepNodes during red-green evaluation. The query system will only call this method if fingerprint_style() is not FingerprintStyle::Opaque. It is always valid to return None here, in which case incremental compilation will treat the query as having changed instead of forcing it.
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> Filterable for T

Source§

fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>

Creates a filterable data provider with the given name for debugging. Read more
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<P> IntoQueryParam<P> for P

Source§

fn into_query_param(self) -> P

Source§

impl<'tcx, T> IsSuggestable<'tcx> for T
where T: TypeVisitable<TyCtxt<'tcx>> + TypeFoldable<TyCtxt<'tcx>>,

Source§

fn is_suggestable(self, tcx: TyCtxt<'tcx>, infer_suggestable: bool) -> bool

Whether this makes sense to suggest in a diagnostic. Read more
Source§

fn make_suggestable( self, tcx: TyCtxt<'tcx>, infer_suggestable: bool, placeholder: Option<Ty<'tcx>>, ) -> Option<T>

Source§

impl<T> MaybeResult<T> for T

Source§

type Error = !

Source§

fn from(_: Result<T, <T as MaybeResult<T>>::Error>) -> T

Source§

fn to_result(self) -> Result<T, <T as MaybeResult<T>>::Error>

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<V, T> VZip<V> for T
where V: MultiLane<T>,

Source§

fn vzip(self) -> V

Source§

impl<Tcx, T> Value<Tcx> for T
where Tcx: DepContext,

Source§

default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> 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,

Source§

impl<T> ErasedDestructor for T
where T: 'static,

Source§

impl<T> MaybeSendSync for T
where T: Send + Sync,

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.