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: Const<'tcx>) -> Const<'tcx>
fn fold_predicate(&mut self, p: Predicate<'tcx>) -> Predicate<'tcx>
fn fold_unevaluated(
&mut self,
uv: Unevaluated<'tcx, Option<Promoted>>
) -> Unevaluated<'tcx, Option<Promoted>>
fn fold_mir_const(&mut self, c: ConstantKind<'tcx>) -> ConstantKind<'tcx>
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 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: 96 bytes