Struct rustc_trait_selection::traits::util::BoundVarReplacer
source · pub struct BoundVarReplacer<'me, 'tcx> {
infcx: &'me InferCtxt<'tcx>,
mapped_regions: FxIndexMap<PlaceholderRegion, BoundRegion>,
mapped_types: FxIndexMap<PlaceholderType, BoundTy>,
mapped_consts: BTreeMap<PlaceholderConst, BoundVar>,
current_index: DebruijnIndex,
universe_indices: &'me mut Vec<Option<UniverseIndex>>,
}
Fields§
§infcx: &'me InferCtxt<'tcx>
§mapped_regions: FxIndexMap<PlaceholderRegion, BoundRegion>
§mapped_types: FxIndexMap<PlaceholderType, BoundTy>
§mapped_consts: BTreeMap<PlaceholderConst, 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, FxIndexMap<PlaceholderRegion, BoundRegion>, FxIndexMap<PlaceholderType, BoundTy>, BTreeMap<PlaceholderConst, BoundVar>)
pub fn replace_bound_vars<T: TypeFoldable<TyCtxt<'tcx>>>( infcx: &'me InferCtxt<'tcx>, universe_indices: &'me mut Vec<Option<UniverseIndex>>, value: T, ) -> (T, FxIndexMap<PlaceholderRegion, BoundRegion>, FxIndexMap<PlaceholderType, BoundTy>, BTreeMap<PlaceholderConst, 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 cx(&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> Freeze for BoundVarReplacer<'me, 'tcx>
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<T, R> CollectAndApply<T, R> for T
impl<T, R> CollectAndApply<T, R> for T
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 cx(&self) -> I
fn try_fold_binder<T>(&mut self, t: Binder<I, T>) -> Result<Binder<I, T>, !>where
T: TypeFoldable<I>,
fn try_fold_ty( &mut self, t: <I as Interner>::Ty, ) -> Result<<I as Interner>::Ty, !>
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, !>
fn try_fold_predicate( &mut self, p: <I as Interner>::Predicate, ) -> Result<<I as Interner>::Predicate, !>
source§impl<T> Filterable for T
impl<T> Filterable for T
source§fn filterable(
self,
filter_name: &'static str,
) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
fn filterable( self, filter_name: &'static str, ) -> RequestFilterDataProvider<T, fn(_: DataRequest<'_>) -> bool>
Creates a filterable data provider with the given name for debugging. Read more
source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§impl<P> IntoQueryParam<P> for P
impl<P> IntoQueryParam<P> for P
fn into_query_param(self) -> P
source§impl<T> MaybeResult<T> for T
impl<T> MaybeResult<T> for T
source§impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
impl<I, T, U> Upcast<I, U> for Twhere
U: UpcastFrom<I, T>,
source§impl<I, T> UpcastFrom<I, T> for T
impl<I, T> UpcastFrom<I, T> for T
fn upcast_from(from: T, _tcx: I) -> T
source§impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
impl<Tcx, T> Value<Tcx> for Twhere
Tcx: DepContext,
default fn from_cycle_error( tcx: Tcx, cycle_error: &CycleError, _guar: ErrorGuaranteed, ) -> T
source§impl<T> WithSubscriber for T
impl<T> WithSubscriber for T
source§fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
source§fn with_current_subscriber(self) -> WithDispatch<Self>
fn with_current_subscriber(self) -> WithDispatch<Self>
impl<'a, T> Captures<'a> for Twhere
T: ?Sized,
impl<T> ErasedDestructor for Twhere
T: 'static,
impl<T> MaybeSendSync for T
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: 160 bytes