pub struct RegionFolder<'a, I>where
I: Interner,{
cx: I,
current_index: DebruijnIndex,
fold_region_fn: &'a mut dyn FnMut(<I as Interner>::Region, DebruijnIndex) -> <I as Interner>::Region,
}Expand description
Folds over the substructure of a type, visiting its component types and all regions that occur free within it.
That is, function pointer types and trait object can introduce
new bound regions which are not visited by this visitors as
they are not free; only regions that occur free will be
visited by fld_r.
Fields§
§cx: I§current_index: DebruijnIndex§fold_region_fn: &'a mut dyn FnMut(<I as Interner>::Region, DebruijnIndex) -> <I as Interner>::RegionImplementations§
Source§impl<'a, I> RegionFolder<'a, I>where
I: Interner,
impl<'a, I> RegionFolder<'a, I>where
I: Interner,
pub fn new( cx: I, fold_region_fn: &'a mut dyn FnMut(<I as Interner>::Region, DebruijnIndex) -> <I as Interner>::Region, ) -> RegionFolder<'a, I>
Trait Implementations§
Source§impl<'a, I> TypeFolder<I> for RegionFolder<'a, I>where
I: Interner,
impl<'a, I> TypeFolder<I> for RegionFolder<'a, I>where
I: Interner,
fn cx(&self) -> I
fn fold_binder<T>(&mut self, t: Binder<I, T>) -> Binder<I, T>where
T: TypeFoldable<I>,
fn fold_region(&mut self, r: <I as Interner>::Region) -> <I as Interner>::Region
fn fold_ty(&mut self, t: <I as Interner>::Ty) -> <I as Interner>::Ty
fn fold_const(&mut self, c: <I as Interner>::Const) -> <I as Interner>::Const
fn fold_predicate( &mut self, p: <I as Interner>::Predicate, ) -> <I as Interner>::Predicate
Auto Trait Implementations§
impl<'a, I> !DynSend for RegionFolder<'a, I>
impl<'a, I> !DynSync for RegionFolder<'a, I>
impl<'a, I> Freeze for RegionFolder<'a, I>where
I: Freeze,
impl<'a, I> !RefUnwindSafe for RegionFolder<'a, I>
impl<'a, I> !Send for RegionFolder<'a, I>
impl<'a, I> !Sync for RegionFolder<'a, I>
impl<'a, I> Unpin for RegionFolder<'a, I>where
I: Unpin,
impl<'a, I> !UnwindSafe for RegionFolder<'a, I>
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<T> Pointable for T
impl<T> Pointable 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,
Layout§
Note: Unable to compute type layout, possibly due to this type having generic parameters. Layout can only be computed for concrete, fully-instantiated types.