Struct rustc_trait_selection::traits::project::BoundVarReplacer
source · pub struct BoundVarReplacer<'me, 'tcx> {
infcx: &'me InferCtxt<'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<'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>>
Implementations§
source§impl<'me, 'tcx> BoundVarReplacer<'me, 'tcx>
impl<'me, 'tcx> BoundVarReplacer<'me, 'tcx>
sourcepub fn replace_bound_vars<T: TypeFoldable<TyCtxt<'tcx>>>(
infcx: &'me InferCtxt<'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<TyCtxt<'tcx>>>( infcx: &'me InferCtxt<'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§
source§impl<'tcx> TypeFolder<TyCtxt<'tcx>> for BoundVarReplacer<'_, 'tcx>
impl<'tcx> TypeFolder<TyCtxt<'tcx>> for BoundVarReplacer<'_, 'tcx>
fn interner(&self) -> TyCtxt<'tcx>
fn fold_binder<T: TypeFoldable<TyCtxt<'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>
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>
impl<'me, 'tcx> !UnwindSafe for BoundVarReplacer<'me, 'tcx>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<I, F> FallibleTypeFolder<I> for Fwhere
I: Interner,
F: TypeFolder<I>,
impl<I, F> FallibleTypeFolder<I> for Fwhere I: Interner, F: TypeFolder<I>,
type Error = !
fn interner(&self) -> I
fn try_fold_binder<T>( &mut self, t: <I as Interner>::Binder<T> ) -> Result<<I as Interner>::Binder<T>, !>where T: TypeFoldable<I>, <I as Interner>::Binder<T>: TypeSuperFoldable<I>,
fn try_fold_ty( &mut self, t: <I as Interner>::Ty ) -> Result<<I as Interner>::Ty, !>where <I as Interner>::Ty: TypeSuperFoldable<I>,
fn try_fold_region( &mut self, r: <I as Interner>::Region ) -> Result<<I as Interner>::Region, !>
fn try_fold_const( &mut self, c: <I as Interner>::Const ) -> Result<<I as Interner>::Const, !>where <I as Interner>::Const: TypeSuperFoldable<I>,
fn try_fold_predicate( &mut self, p: <I as Interner>::Predicate ) -> Result<<I as Interner>::Predicate, !>where <I as Interner>::Predicate: TypeSuperFoldable<I>,
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