Struct rustc_infer::infer::resolve::OpportunisticRegionResolver
source · [−]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 normlizing 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>Implementations
sourceimpl<'a, 'tcx> OpportunisticRegionResolver<'a, 'tcx>
impl<'a, 'tcx> OpportunisticRegionResolver<'a, 'tcx>
Trait Implementations
sourceimpl<'a, 'tcx> TypeFolder<'tcx> for OpportunisticRegionResolver<'a, 'tcx>
impl<'a, 'tcx> TypeFolder<'tcx> for OpportunisticRegionResolver<'a, 'tcx>
fn tcx<'b>(&'b self) -> TyCtxt<'tcx>
fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx>
fn fold_region(&mut self, r: Region<'tcx>) -> Region<'tcx>
fn fold_const(&mut self, ct: &'tcx Const<'tcx>) -> &'tcx Const<'tcx>
type Error = !
fn fold_binder<T>(&mut self, t: Binder<'tcx, T>) -> Binder<'tcx, T> where
T: TypeFoldable<'tcx>,
Self: TypeFolder<'tcx, Error = !>,
fn fold_predicate(&mut self, p: Predicate<'tcx>) -> Predicate<'tcx> where
Self: TypeFolder<'tcx, Error = !>,
fn fold_mir_const(&mut self, c: ConstantKind<'tcx>) -> ConstantKind<'tcx> where
Self: TypeFolder<'tcx, Error = !>,
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 T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<'tcx, F> FallibleTypeFolder<'tcx> for F where
F: TypeFolder<'tcx, Error = !>,
impl<'tcx, F> FallibleTypeFolder<'tcx> for F where
F: TypeFolder<'tcx, Error = !>,
pub fn try_fold_binder<T>(
&mut self,
t: Binder<'tcx, T>
) -> Result<Binder<'tcx, T>, <F as TypeFolder<'tcx>>::Error> where
T: TypeFoldable<'tcx>,
pub fn try_fold_ty(
&mut self,
t: &'tcx TyS<'tcx>
) -> Result<&'tcx TyS<'tcx>, <F as TypeFolder<'tcx>>::Error>
pub fn try_fold_region(
&mut self,
r: &'tcx RegionKind
) -> Result<&'tcx RegionKind, <F as TypeFolder<'tcx>>::Error>
pub fn try_fold_const(
&mut self,
c: &'tcx Const<'tcx>
) -> Result<&'tcx Const<'tcx>, <F as TypeFolder<'tcx>>::Error>
pub fn try_fold_predicate(
&mut self,
p: Predicate<'tcx>
) -> Result<Predicate<'tcx>, <F as TypeFolder<'tcx>>::Error>
pub fn try_fold_mir_const(
&mut self,
c: ConstantKind<'tcx>
) -> Result<ConstantKind<'tcx>, <F as TypeFolder<'tcx>>::Error>
impl<'a, T> Captures<'a> for T where
T: ?Sized,
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