pub struct At<'a, 'tcx> {
    pub infcx: &'a InferCtxt<'tcx>,
    pub cause: &'a ObligationCause<'tcx>,
    pub param_env: ParamEnv<'tcx>,
}

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§infcx: &'a InferCtxt<'tcx>§cause: &'a ObligationCause<'tcx>§param_env: ParamEnv<'tcx>

Trait Implementations§

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impl<'tcx> NormalizeExt<'tcx> for At<'_, 'tcx>

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fn normalize<T: TypeFoldable<TyCtxt<'tcx>>>(&self, value: T) -> InferOk<'tcx, T>

Normalize a value using the AssocTypeNormalizer. Read more
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fn deeply_normalize<T: TypeFoldable<TyCtxt<'tcx>>>( self, value: T, fulfill_cx: &mut dyn TraitEngine<'tcx> ) -> Result<T, Vec<FulfillmentError<'tcx>>>

Deeply normalizes value, replacing all aliases which can by normalized in the current environment. In the new solver this errors in case normalization fails or is ambiguous. This only normalizes opaque types with Reveal::All. Read more
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impl<'cx, 'tcx> QueryNormalizeExt<'tcx> for At<'cx, 'tcx>

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fn query_normalize<T>(self, value: T) -> Result<Normalized<'tcx, T>, NoSolution>where T: TypeFoldable<TyCtxt<'tcx>>,

Normalize value in the context of the inference context, yielding a resulting type, or an error if value cannot be normalized. If you don’t care about regions, you should prefer normalize_erasing_regions, which is more efficient.

If the normalization succeeds and is unambiguous, returns back the normalized value along with various outlives relations (in the form of obligations that must be discharged).

N.B., this will eventually be the main means of normalizing, but for now should be used only when we actually know that normalization will succeed, since error reporting and other details are still “under development”.

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impl<'tcx> StructurallyNormalizeExt<'tcx> for At<'_, 'tcx>

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fn structurally_normalize( &self, ty: Ty<'tcx>, fulfill_cx: &mut dyn TraitEngine<'tcx> ) -> Result<Ty<'tcx>, Vec<FulfillmentError<'tcx>>>

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impl<'a, 'tcx> !RefUnwindSafe for At<'a, 'tcx>

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impl<'a, 'tcx> !Send for At<'a, 'tcx>

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impl<'a, 'tcx> !Sync for At<'a, 'tcx>

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impl<'a, 'tcx> Unpin for At<'a, 'tcx>

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impl<'a, 'tcx> !UnwindSafe for At<'a, 'tcx>

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere 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> ToOwned for Twhere 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 Twhere 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 Twhere 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.

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: 24 bytes