pub struct InferCtxtBuilder<'tcx> {
    tcx: TyCtxt<'tcx>,
    defining_use_anchor: DefiningAnchor,
    considering_regions: bool,
    intercrate: bool,
    normalize_fn_sig_for_diagnostic: Option<Lrc<dyn Fn(&InferCtxt<'tcx>, PolyFnSig<'tcx>) -> PolyFnSig<'tcx>>>,
}
Expand description

Used to configure inference contexts before their creation

Fields§

§tcx: TyCtxt<'tcx>§defining_use_anchor: DefiningAnchor§considering_regions: bool§intercrate: bool

Whether we are in coherence mode.

§normalize_fn_sig_for_diagnostic: Option<Lrc<dyn Fn(&InferCtxt<'tcx>, PolyFnSig<'tcx>) -> PolyFnSig<'tcx>>>

Implementations§

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.

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 substitution S. This substitution S maps from the bound values in C to their instantiated values in V (in other words, S(C) = V).

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion 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: 32 bytes