CastError

rustc_hir_typeck::cast

Enum CastError 

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enum CastError<'tcx> {

Show 16 variants    ErrorGuaranteed(ErrorGuaranteed),
    CastToBool,
    CastToChar,
    DifferingKinds {
        src_kind: PointerKind<'tcx>,
        dst_kind: PointerKind<'tcx>,
    },
    SizedUnsizedCast,
    IllegalCast,
    NeedDeref,
    NeedViaPtr,
    NeedViaThinPtr,
    NeedViaInt,
    NonScalar,
    UnknownExprPtrKind,
    UnknownCastPtrKind,
    IntToWideCast(Option<&'static str>),
    ForeignNonExhaustiveAdt,
    PtrPtrAddingAutoTrait(Vec<DefId>),

}

Variants§

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ErrorGuaranteed(ErrorGuaranteed)

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CastToBool

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CastToChar

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DifferingKinds

Fields

§src_kind: PointerKind<'tcx>
§dst_kind: PointerKind<'tcx>
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SizedUnsizedCast

Cast of thin to wide raw ptr (e.g., *const () as *const [u8]).

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IllegalCast

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NeedDeref

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NeedViaPtr

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NeedViaThinPtr

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NeedViaInt

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NonScalar

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UnknownExprPtrKind

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UnknownCastPtrKind

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IntToWideCast(Option<&'static str>)

Cast of int to (possibly) wide raw pointer.

Argument is the specific name of the metadata in plain words, such as “a vtable” or “a length”. If this argument is None, then the metadata is unknown, for example, when we’re typechecking a type parameter with a ?Sized bound.

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ForeignNonExhaustiveAdt

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PtrPtrAddingAutoTrait(Vec<DefId>)

Trait Implementations§

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impl<'tcx> Debug for CastError<'tcx>

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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 From<ErrorGuaranteed> for CastError<'_>

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fn from(err: ErrorGuaranteed) -> Self

Converts to this type from the input type.

Auto Trait Implementations§

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impl<'tcx> DynSend for CastError<'tcx>

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impl<'tcx> DynSync for CastError<'tcx>

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impl<'tcx> Freeze for CastError<'tcx>

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

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impl<'tcx> Send for CastError<'tcx>

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impl<'tcx> Sync for CastError<'tcx>

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impl<'tcx> Unpin for CastError<'tcx>

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

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, 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<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<P> IntoQueryParam<P> for P

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fn into_query_param(self) -> P

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impl<T> MaybeResult<T> for T

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type Error = !

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

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

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

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fn vzip(self) -> V

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

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default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> 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<T> ErasedDestructor for T
where T: 'static,

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes

Size for each variant:

  • ErrorGuaranteed: 0 bytes
  • CastToBool: 0 bytes
  • CastToChar: 0 bytes
  • DifferingKinds: 32 bytes
  • SizedUnsizedCast: 0 bytes
  • IllegalCast: 0 bytes
  • NeedDeref: 0 bytes
  • NeedViaPtr: 0 bytes
  • NeedViaThinPtr: 0 bytes
  • NeedViaInt: 0 bytes
  • NonScalar: 0 bytes
  • UnknownExprPtrKind: 0 bytes
  • UnknownCastPtrKind: 0 bytes
  • IntToWideCast: 24 bytes
  • ForeignNonExhaustiveAdt: 0 bytes
  • PtrPtrAddingAutoTrait: 32 bytes