[][src]Struct rustc_infer::infer::InferCtxtBuilder

pub struct InferCtxtBuilder<'tcx> {
    tcx: TyCtxt<'tcx>,
    fresh_typeck_results: Option<RefCell<TypeckResults<'tcx>>>,
}

Helper type of a temporary returned by tcx.infer_ctxt(). Necessary because we can't write the following bound: F: for<'b, 'tcx> where 'tcx FnOnce(InferCtxt<'b, 'tcx>).

Fields

tcx: TyCtxt<'tcx>fresh_typeck_results: Option<RefCell<TypeckResults<'tcx>>>

Implementations

impl<'tcx> InferCtxtBuilder<'tcx>[src]

pub fn with_fresh_in_progress_typeck_results(
    self,
    table_owner: LocalDefId
) -> Self
[src]

Used only by rustc_typeck during body type-checking/inference, will initialize in_progress_typeck_results with fresh TypeckResults.

pub fn enter_with_canonical<T, R>(
    &mut self,
    span: Span,
    canonical: &Canonical<'tcx, T>,
    f: impl for<'a> FnOnce(InferCtxt<'a, 'tcx>, T, CanonicalVarValues<'tcx>) -> R
) -> R where
    T: TypeFoldable<'tcx>, 
[src]

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).

pub fn enter<R>(
    &mut self,
    f: impl for<'a> FnOnce(InferCtxt<'a, 'tcx>) -> R
) -> R
[src]

Auto Trait Implementations

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

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

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

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

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

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<'a, T> Captures<'a> for T where
    T: ?Sized
[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> WithConstness for T[src]