Struct rustc_hir_typeck::cast::CastCheck

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pub(crate) struct CastCheck<'tcx> {
    expr: &'tcx Expr<'tcx>,
    expr_ty: Ty<'tcx>,
    expr_span: Span,
    cast_ty: Ty<'tcx>,
    cast_span: Span,
    span: Span,
}
Expand description

Reifies a cast check to be checked once we have full type information for a function context.

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§expr: &'tcx Expr<'tcx>

The expression whose value is being casted

§expr_ty: Ty<'tcx>

The source type for the cast expression

§expr_span: Span§cast_ty: Ty<'tcx>

The target type. That is, the type we are casting to.

§cast_span: Span§span: Span

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impl<'a, 'tcx> CastCheck<'tcx>

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pub(crate) fn new( fcx: &FnCtxt<'a, 'tcx>, expr: &'tcx Expr<'tcx>, expr_ty: Ty<'tcx>, cast_ty: Ty<'tcx>, cast_span: Span, span: Span, ) -> Result<CastCheck<'tcx>, ErrorGuaranteed>

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fn report_cast_error(&self, fcx: &FnCtxt<'a, 'tcx>, e: CastError)

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fn report_cast_to_unsized_type(&self, fcx: &FnCtxt<'a, 'tcx>) -> ErrorGuaranteed

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fn trivial_cast_lint(&self, fcx: &FnCtxt<'a, 'tcx>)

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pub fn check(self, fcx: &FnCtxt<'a, 'tcx>)

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fn do_check(&self, fcx: &FnCtxt<'a, 'tcx>) -> Result<CastKind, CastError>

Checks a cast, and report an error if one exists. In some cases, this can return Ok and create type errors in the fcx rather than returning directly. coercion-cast is handled in check instead of here.

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fn check_ptr_ptr_cast( &self, fcx: &FnCtxt<'a, 'tcx>, m_expr: TypeAndMut<'tcx>, m_cast: TypeAndMut<'tcx>, ) -> Result<CastKind, CastError>

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fn check_fptr_ptr_cast( &self, fcx: &FnCtxt<'a, 'tcx>, m_cast: TypeAndMut<'tcx>, ) -> Result<CastKind, CastError>

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fn check_ptr_addr_cast( &self, fcx: &FnCtxt<'a, 'tcx>, m_expr: TypeAndMut<'tcx>, ) -> Result<CastKind, CastError>

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fn check_ref_cast( &self, fcx: &FnCtxt<'a, 'tcx>, m_expr: TypeAndMut<'tcx>, m_cast: TypeAndMut<'tcx>, ) -> Result<CastKind, CastError>

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fn check_addr_ptr_cast( &self, fcx: &FnCtxt<'a, 'tcx>, m_cast: TypeAndMut<'tcx>, ) -> Result<CastKind, CastError>

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fn try_coercion_cast( &self, fcx: &FnCtxt<'a, 'tcx>, ) -> Result<(), TypeError<'tcx>>

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fn cenum_impl_drop_lint(&self, fcx: &FnCtxt<'a, 'tcx>)

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fn lossy_provenance_ptr2int_lint(&self, fcx: &FnCtxt<'a, 'tcx>, t_c: IntTy)

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fn fuzzy_provenance_int2ptr_lint(&self, fcx: &FnCtxt<'a, 'tcx>)

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fn try_suggest_collection_to_bool( &self, fcx: &FnCtxt<'a, 'tcx>, err: &mut Diag<'_>, )

Attempt to suggest using .is_empty when trying to cast from a collection type to a boolean.

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impl<'tcx> Debug for CastCheck<'tcx>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'tcx> DynSend for CastCheck<'tcx>

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impl<'tcx> DynSync for CastCheck<'tcx>

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impl<'tcx> Freeze for CastCheck<'tcx>

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

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impl<'tcx> Send for CastCheck<'tcx>

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impl<'tcx> Sync for CastCheck<'tcx>

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impl<'tcx> Unpin for CastCheck<'tcx>

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impl<'tcx> !UnwindSafe for CastCheck<'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> Filterable for T

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

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

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

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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: 48 bytes