Struct rustc_trait_selection::traits::project::BoundVarReplacer
source · [−]pub struct BoundVarReplacer<'me, 'tcx> {
infcx: &'me InferCtxt<'me, 'tcx>,
mapped_regions: BTreeMap<PlaceholderRegion, BoundRegion>,
mapped_types: BTreeMap<PlaceholderType, BoundTy>,
mapped_consts: BTreeMap<PlaceholderConst<'tcx>, BoundVar>,
current_index: DebruijnIndex,
universe_indices: &'me mut Vec<Option<UniverseIndex>>,
}Fields
infcx: &'me InferCtxt<'me, 'tcx>mapped_regions: BTreeMap<PlaceholderRegion, BoundRegion>mapped_types: BTreeMap<PlaceholderType, BoundTy>mapped_consts: BTreeMap<PlaceholderConst<'tcx>, BoundVar>current_index: DebruijnIndexuniverse_indices: &'me mut Vec<Option<UniverseIndex>>Implementations
sourceimpl<'me, 'tcx> BoundVarReplacer<'me, 'tcx>
impl<'me, 'tcx> BoundVarReplacer<'me, 'tcx>
sourcepub fn replace_bound_vars<T: TypeFoldable<'tcx>>(
infcx: &'me InferCtxt<'me, 'tcx>,
universe_indices: &'me mut Vec<Option<UniverseIndex>>,
value: T
) -> (T, BTreeMap<PlaceholderRegion, BoundRegion>, BTreeMap<PlaceholderType, BoundTy>, BTreeMap<PlaceholderConst<'tcx>, BoundVar>)
pub fn replace_bound_vars<T: TypeFoldable<'tcx>>(
infcx: &'me InferCtxt<'me, 'tcx>,
universe_indices: &'me mut Vec<Option<UniverseIndex>>,
value: T
) -> (T, BTreeMap<PlaceholderRegion, BoundRegion>, BTreeMap<PlaceholderType, BoundTy>, BTreeMap<PlaceholderConst<'tcx>, BoundVar>)
Returns Some if we were able to replace bound vars. If there are any bound vars that
use a binding level above universe_indices.len(), we fail.
fn universe_for(&mut self, debruijn: DebruijnIndex) -> UniverseIndex
Trait Implementations
sourceimpl<'tcx> TypeFolder<'tcx> for BoundVarReplacer<'_, 'tcx>
impl<'tcx> TypeFolder<'tcx> for BoundVarReplacer<'_, 'tcx>
fn tcx<'b>(&'b self) -> TyCtxt<'tcx>
fn fold_binder<T: TypeFoldable<'tcx>>(
&mut self,
t: Binder<'tcx, T>
) -> Binder<'tcx, T>
fn fold_region(&mut self, r: Region<'tcx>) -> Region<'tcx>
fn fold_ty(&mut self, t: Ty<'tcx>) -> Ty<'tcx>
fn fold_const(&mut self, ct: &'tcx Const<'tcx>) -> &'tcx Const<'tcx>
type 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<'me, 'tcx> !RefUnwindSafe for BoundVarReplacer<'me, 'tcx>
impl<'me, 'tcx> !Send for BoundVarReplacer<'me, 'tcx>
impl<'me, 'tcx> !Sync for BoundVarReplacer<'me, 'tcx>
impl<'me, 'tcx> Unpin for BoundVarReplacer<'me, 'tcx> where
'tcx: 'me,
impl<'me, 'tcx> !UnwindSafe for BoundVarReplacer<'me, '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>
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: 96 bytes