rustc_type_ir::error

Enum TypeError

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pub enum TypeError<I: Interner> {
Show 24 variants Mismatch, ConstnessMismatch(ExpectedFound<BoundConstness>), PolarityMismatch(ExpectedFound<PredicatePolarity>), SafetyMismatch(ExpectedFound<I::Safety>), AbiMismatch(ExpectedFound<I::Abi>), Mutability, ArgumentMutability(usize), TupleSize(ExpectedFound<usize>), FixedArraySize(ExpectedFound<u64>), ArgCount, RegionsDoesNotOutlive(I::Region, I::Region), RegionsInsufficientlyPolymorphic(I::BoundRegion, I::Region), RegionsPlaceholderMismatch, Sorts(ExpectedFound<I::Ty>), ArgumentSorts(ExpectedFound<I::Ty>, usize), Traits(ExpectedFound<I::DefId>), VariadicMismatch(ExpectedFound<bool>), CyclicTy(I::Ty), CyclicConst(I::Const), ProjectionMismatched(ExpectedFound<I::DefId>), ExistentialMismatch(ExpectedFound<I::BoundExistentialPredicates>), ConstMismatch(ExpectedFound<I::Const>), IntrinsicCast, TargetFeatureCast(I::DefId),
}

Variants§

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Mismatch

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ConstnessMismatch(ExpectedFound<BoundConstness>)

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PolarityMismatch(ExpectedFound<PredicatePolarity>)

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SafetyMismatch(ExpectedFound<I::Safety>)

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AbiMismatch(ExpectedFound<I::Abi>)

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Mutability

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ArgumentMutability(usize)

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TupleSize(ExpectedFound<usize>)

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FixedArraySize(ExpectedFound<u64>)

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ArgCount

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RegionsDoesNotOutlive(I::Region, I::Region)

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RegionsInsufficientlyPolymorphic(I::BoundRegion, I::Region)

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RegionsPlaceholderMismatch

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Sorts(ExpectedFound<I::Ty>)

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ArgumentSorts(ExpectedFound<I::Ty>, usize)

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Traits(ExpectedFound<I::DefId>)

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VariadicMismatch(ExpectedFound<bool>)

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CyclicTy(I::Ty)

Instantiating a type variable with the given type would have created a cycle (because it appears somewhere within that type).

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CyclicConst(I::Const)

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ProjectionMismatched(ExpectedFound<I::DefId>)

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ExistentialMismatch(ExpectedFound<I::BoundExistentialPredicates>)

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ConstMismatch(ExpectedFound<I::Const>)

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IntrinsicCast

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TargetFeatureCast(I::DefId)

Safe #[target_feature] functions are not assignable to safe function pointers.

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Trait Implementations§

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

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fn clone(&self) -> Self

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<I> Debug for TypeError<I>
where I: Interner,

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

Formats the value using the given formatter. Read more
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impl<I: Interner> From<TypeError<I>> for NoSolution

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fn from(_: TypeError<I>) -> NoSolution

Converts to this type from the input type.
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impl<I> PartialEq for TypeError<I>
where I: Interner,

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<I> TypeVisitable<I> for TypeError<I>

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

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

Auto Trait Implementations§

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impl<I> DynSend for TypeError<I>

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impl<I> DynSync for TypeError<I>

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impl<I> Freeze for TypeError<I>

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impl<I> RefUnwindSafe for TypeError<I>

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impl<I> Send for TypeError<I>
where <I as Interner>::Region: Send, <I as Interner>::BoundRegion: Send, <I as Interner>::Ty: Send, <I as Interner>::Const: Send, <I as Interner>::DefId: Send, <I as Interner>::Safety: Send, <I as Interner>::Abi: Send, <I as Interner>::BoundExistentialPredicates: Send,

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impl<I> Sync for TypeError<I>
where <I as Interner>::Region: Sync, <I as Interner>::BoundRegion: Sync, <I as Interner>::Ty: Sync, <I as Interner>::Const: Sync, <I as Interner>::DefId: Sync, <I as Interner>::Safety: Sync, <I as Interner>::Abi: Sync, <I as Interner>::BoundExistentialPredicates: Sync,

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impl<I> Unpin for TypeError<I>

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impl<I> UnwindSafe for TypeError<I>

Blanket Implementations§

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impl<T> Aligned for T

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const ALIGN: Alignment = _

Alignment of Self.
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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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

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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<_>>()).

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type Output = R

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

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

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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

Compare self to key and return true if they are equal.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> IntoEither for T

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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
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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
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<I, T> TypeVisitableExt<I> for T
where I: Interner, T: TypeVisitable<I>,

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

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

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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).
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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
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fn has_aliases(&self) -> bool

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fn has_opaque_types(&self) -> bool

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fn has_coroutines(&self) -> bool

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fn references_error(&self) -> bool

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fn has_non_region_param(&self) -> bool

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fn has_infer_regions(&self) -> bool

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fn has_infer_types(&self) -> bool

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fn has_non_region_infer(&self) -> bool

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fn has_infer(&self) -> bool

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fn has_placeholders(&self) -> bool

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fn has_non_region_placeholders(&self) -> bool

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fn has_param(&self) -> bool

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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.
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fn has_erased_regions(&self) -> bool

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fn has_erasable_regions(&self) -> bool

True if there are any un-erased free regions.
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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.
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fn has_bound_regions(&self) -> bool

True if there are any late-bound regions
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fn has_non_region_bound_vars(&self) -> bool

True if there are any late-bound non-region variables
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fn has_bound_vars(&self) -> bool

True if there are any bound variables
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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.
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impl<I, T, U> Upcast<I, U> for T
where U: UpcastFrom<I, T>,

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

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

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

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impl<T> WithSubscriber for T

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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
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<'a, T> Captures<'a> for T
where T: ?Sized,

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