Struct rustc_infer::infer::InferCtxtBuilder

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pub struct InferCtxtBuilder<'tcx> {
    tcx: TyCtxt<'tcx>,
    defining_opaque_types: &'tcx List<LocalDefId>,
    considering_regions: bool,
    skip_leak_check: bool,
    intercrate: bool,
    next_trait_solver: bool,
}
Expand description

Used to configure inference contexts before their creation.

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§tcx: TyCtxt<'tcx>§defining_opaque_types: &'tcx List<LocalDefId>§considering_regions: bool§skip_leak_check: bool§intercrate: bool

Whether we are in coherence mode.

§next_trait_solver: bool

Whether we should use the new trait solver in the local inference context, which affects things like which solver is used in predicate_may_hold.

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impl<'tcx> InferCtxtBuilder<'tcx>

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pub fn with_opaque_type_inference(self, defining_anchor: LocalDefId) -> Self

Whenever the InferCtxt should be able to handle defining uses of opaque types, you need to call this function. Otherwise the opaque type will be treated opaquely.

It is only meant to be called in two places, for typeck (via Inherited::build) and for the inference context used in mir borrowck.

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pub fn with_defining_opaque_types( self, defining_opaque_types: &'tcx List<LocalDefId> ) -> Self

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pub fn with_next_trait_solver(self, next_trait_solver: bool) -> Self

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pub fn intercrate(self, intercrate: bool) -> Self

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pub fn ignoring_regions(self) -> Self

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pub fn skip_leak_check(self, skip_leak_check: bool) -> Self

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pub fn build_with_canonical<T>( self, span: Span, canonical: &Canonical<'tcx, T> ) -> (InferCtxt<'tcx>, T, CanonicalVarValues<'tcx>)
where T: TypeFoldable<TyCtxt<'tcx>>,

Given a canonical value C as a starting point, create an inference context that contains each of the bound values within instantiated as a fresh variable. The f closure is invoked with the new infcx, along with the instantiated value V and a instantiation S. This instantiation S maps from the bound values in C to their instantiated values in V (in other words, S(C) = V).

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pub fn build(&mut self) -> InferCtxt<'tcx>

Auto Trait Implementations§

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impl<'tcx> DynSend for InferCtxtBuilder<'tcx>

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impl<'tcx> DynSync for InferCtxtBuilder<'tcx>

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impl<'tcx> Freeze for InferCtxtBuilder<'tcx>

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

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impl<'tcx> !Send for InferCtxtBuilder<'tcx>

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impl<'tcx> !Sync for InferCtxtBuilder<'tcx>

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impl<'tcx> Unpin for InferCtxtBuilder<'tcx>

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impl<'tcx> !UnwindSafe for InferCtxtBuilder<'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<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<'tcx, T> ToPredicate<'tcx, T> for T

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fn to_predicate(self, _tcx: TyCtxt<'tcx>) -> T

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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<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,

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