pub struct OpportunisticRegionResolver<'a, 'tcx> {
infcx: &'a InferCtxt<'a, 'tcx>,
}Expand description
The opportunistic region resolver opportunistically resolves regions variables to the variable with the least variable id. It is used when normalizing projections to avoid hitting the recursion limit by creating many versions of a predicate for types that in the end have to unify.
If you want to resolve type and const variables as well, call InferCtxt::resolve_vars_if_possible first.
Fields
infcx: &'a InferCtxt<'a, 'tcx>Auto Trait Implementations
impl<'a, 'tcx> !RefUnwindSafe for OpportunisticRegionResolver<'a, 'tcx>
impl<'a, 'tcx> !Send for OpportunisticRegionResolver<'a, 'tcx>
impl<'a, 'tcx> !Sync for OpportunisticRegionResolver<'a, 'tcx>
impl<'a, 'tcx> Unpin for OpportunisticRegionResolver<'a, 'tcx>where
'tcx: 'a,
impl<'a, 'tcx> !UnwindSafe for OpportunisticRegionResolver<'a, 'tcx>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<'tcx, F> FallibleTypeFolder<'tcx> for Fwhere
F: TypeFolder<'tcx>,
impl<'tcx, F> FallibleTypeFolder<'tcx> for Fwhere
F: TypeFolder<'tcx>,
type Error = !
fn tcx(&'a self) -> TyCtxt<'tcx>
fn try_fold_binder<T>(
&mut self,
t: Binder<'tcx, T>
) -> Result<Binder<'tcx, T>, !>where
T: TypeFoldable<'tcx>,
fn try_fold_ty(&mut self, t: Ty<'tcx>) -> Result<Ty<'tcx>, !>
fn try_fold_region(&mut self, r: Region<'tcx>) -> Result<Region<'tcx>, !>
fn try_fold_const(&mut self, c: Const<'tcx>) -> Result<Const<'tcx>, !>
fn try_fold_unevaluated(
&mut self,
c: Unevaluated<'tcx, Option<Promoted>>
) -> Result<Unevaluated<'tcx, Option<Promoted>>, !>
fn try_fold_predicate(
&mut self,
p: Predicate<'tcx>
) -> Result<Predicate<'tcx>, !>
fn try_fold_mir_const(
&mut self,
c: ConstantKind<'tcx>
) -> Result<ConstantKind<'tcx>, !>
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: 8 bytes