pub struct InferCtxtBuilder<'tcx> {
    tcx: TyCtxt<'tcx>,
    defining_use_anchor: DefiningAnchor,
    considering_regions: bool,
    fresh_typeck_results: Option<RefCell<TypeckResults<'tcx>>>,
    normalize_fn_sig_for_diagnostic: Option<Rc<dyn Fn(&InferCtxt<'_, 'tcx>, Binder<'tcx, FnSig<'tcx>>) + 'static>>,
}
Expand description

A temporary returned by tcx.infer_ctxt(). This is necessary for multiple InferCtxt to share the same in_progress_typeck_results without using Rc or something similar.

Fields

tcx: TyCtxt<'tcx>defining_use_anchor: DefiningAnchorconsidering_regions: boolfresh_typeck_results: Option<RefCell<TypeckResults<'tcx>>>normalize_fn_sig_for_diagnostic: Option<Rc<dyn Fn(&InferCtxt<'_, 'tcx>, Binder<'tcx, FnSig<'tcx>>) + 'static>>

Trait Implementations

The “main method” for a canonicalized trait query. Given the canonical key canonical_key, this method will create a new inference context, instantiate the key, and run your operation op. The operation should yield up a result (of type R) as well as a set of trait obligations that must be fully satisfied. These obligations will be processed and the canonical result created.

Returns NoSolution in the event of any error.

(It might be mildly nicer to implement this on TyCtxt, and not InferCtxtBuilder, but that is a bit tricky right now. In part because we would need a for<'tcx> sort of bound for the closure and in part because it is convenient to have 'tcx be free on this function so that we can talk about K: TypeFoldable<'tcx>.)

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: 696 bytes