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Introduce TypeVisitor::BreakTy

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This commit is contained in:
LeSeulArtichaut 2020-11-05 17:30:39 +01:00
parent 30e49a9ead
commit e0f3119103
31 changed files with 157 additions and 128 deletions
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1
compiler/rustc_middle/src/lib.rs
View file

@ -51,6 +51,7 @@
#![feature(half_open_range_patterns)]
#![feature(exclusive_range_pattern)]
#![feature(control_flow_enum)]
#![feature(associated_type_defaults)]
#![recursion_limit = "512"]
#[macro_use]

4
compiler/rustc_middle/src/macros.rs
View file

@ -62,7 +62,7 @@ macro_rules! CloneTypeFoldableImpls {
fn super_visit_with<F: $crate::ty::fold::TypeVisitor<$tcx>>(
&self,
_: &mut F)
-> ::std::ops::ControlFlow<()>
-> ::std::ops::ControlFlow<F::BreakTy>
{
::std::ops::ControlFlow::CONTINUE
}
@ -105,7 +105,7 @@ macro_rules! EnumTypeFoldableImpl {
fn super_visit_with<V: $crate::ty::fold::TypeVisitor<$tcx>>(
&self,
visitor: &mut V,
) -> ::std::ops::ControlFlow<()> {
) -> ::std::ops::ControlFlow<V::BreakTy> {
EnumTypeFoldableImpl!(@VisitVariants(self, visitor) input($($variants)*) output())
}
}

5
compiler/rustc_middle/src/mir/mod.rs
View file

@ -2477,7 +2477,10 @@ impl<'tcx> TypeFoldable<'tcx> for UserTypeProjection {
UserTypeProjection { base, projs }
}
fn super_visit_with<Vs: TypeVisitor<'tcx>>(&self, visitor: &mut Vs) -> ControlFlow<()> {
fn super_visit_with<Vs: TypeVisitor<'tcx>>(
&self,
visitor: &mut Vs,
) -> ControlFlow<Vs::BreakTy> {
self.base.visit_with(visitor)
// Note: there's nothing in `self.proj` to visit.
}

25
compiler/rustc_middle/src/mir/type_foldable.rs
View file

@ -87,7 +87,7 @@ impl<'tcx> TypeFoldable<'tcx> for Terminator<'tcx> {
Terminator { source_info: self.source_info, kind }
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
use crate::mir::TerminatorKind::*;
match self.kind {
@ -144,7 +144,7 @@ impl<'tcx> TypeFoldable<'tcx> for GeneratorKind {
*self
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _: &mut V) -> ControlFlow<V::BreakTy> {
ControlFlow::CONTINUE
}
}
@ -154,7 +154,7 @@ impl<'tcx> TypeFoldable<'tcx> for Place<'tcx> {
Place { local: self.local.fold_with(folder), projection: self.projection.fold_with(folder) }
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.local.visit_with(visitor)?;
self.projection.visit_with(visitor)
}
@ -166,7 +166,7 @@ impl<'tcx> TypeFoldable<'tcx> for &'tcx ty::List<PlaceElem<'tcx>> {
folder.tcx().intern_place_elems(&v)
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.iter().try_for_each(|t| t.visit_with(visitor))
}
}
@ -216,7 +216,7 @@ impl<'tcx> TypeFoldable<'tcx> for Rvalue<'tcx> {
}
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
use crate::mir::Rvalue::*;
match *self {
Use(ref op) => op.visit_with(visitor),
@ -271,7 +271,7 @@ impl<'tcx> TypeFoldable<'tcx> for Operand<'tcx> {
}
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
match *self {
Operand::Copy(ref place) | Operand::Move(ref place) => place.visit_with(visitor),
Operand::Constant(ref c) => c.visit_with(visitor),
@ -295,7 +295,10 @@ impl<'tcx> TypeFoldable<'tcx> for PlaceElem<'tcx> {
}
}
fn super_visit_with<Vs: TypeVisitor<'tcx>>(&self, visitor: &mut Vs) -> ControlFlow<()> {
fn super_visit_with<Vs: TypeVisitor<'tcx>>(
&self,
visitor: &mut Vs,
) -> ControlFlow<Vs::BreakTy> {
use crate::mir::ProjectionElem::*;
match self {
@ -310,7 +313,7 @@ impl<'tcx> TypeFoldable<'tcx> for Field {
fn super_fold_with<F: TypeFolder<'tcx>>(&self, _: &mut F) -> Self {
*self
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _: &mut V) -> ControlFlow<V::BreakTy> {
ControlFlow::CONTINUE
}
}
@ -319,7 +322,7 @@ impl<'tcx> TypeFoldable<'tcx> for GeneratorSavedLocal {
fn super_fold_with<F: TypeFolder<'tcx>>(&self, _: &mut F) -> Self {
*self
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _: &mut V) -> ControlFlow<V::BreakTy> {
ControlFlow::CONTINUE
}
}
@ -328,7 +331,7 @@ impl<'tcx, R: Idx, C: Idx> TypeFoldable<'tcx> for BitMatrix<R, C> {
fn super_fold_with<F: TypeFolder<'tcx>>(&self, _: &mut F) -> Self {
self.clone()
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _: &mut V) -> ControlFlow<V::BreakTy> {
ControlFlow::CONTINUE
}
}
@ -341,7 +344,7 @@ impl<'tcx> TypeFoldable<'tcx> for Constant<'tcx> {
literal: self.literal.fold_with(folder),
}
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.literal.visit_with(visitor)
}
}

53
compiler/rustc_middle/src/ty/fold.rs
View file

@ -49,8 +49,8 @@ pub trait TypeFoldable<'tcx>: fmt::Debug + Clone {
self.super_fold_with(folder)
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()>;
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy>;
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.super_visit_with(visitor)
}
@ -161,7 +161,7 @@ impl TypeFoldable<'tcx> for hir::Constness {
fn super_fold_with<F: TypeFolder<'tcx>>(&self, _: &mut F) -> Self {
*self
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _: &mut V) -> ControlFlow<V::BreakTy> {
ControlFlow::CONTINUE
}
}
@ -195,23 +195,25 @@ pub trait TypeFolder<'tcx>: Sized {
}
pub trait TypeVisitor<'tcx>: Sized {
fn visit_binder<T: TypeFoldable<'tcx>>(&mut self, t: &Binder<T>) -> ControlFlow<()> {
type BreakTy = ();
fn visit_binder<T: TypeFoldable<'tcx>>(&mut self, t: &Binder<T>) -> ControlFlow<Self::BreakTy> {
t.super_visit_with(self)
}
fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow<()> {
fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow<Self::BreakTy> {
t.super_visit_with(self)
}
fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow<()> {
fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow<Self::BreakTy> {
r.super_visit_with(self)
}
fn visit_const(&mut self, c: &'tcx ty::Const<'tcx>) -> ControlFlow<()> {
fn visit_const(&mut self, c: &'tcx ty::Const<'tcx>) -> ControlFlow<Self::BreakTy> {
c.super_visit_with(self)
}
fn visit_predicate(&mut self, p: ty::Predicate<'tcx>) -> ControlFlow<()> {
fn visit_predicate(&mut self, p: ty::Predicate<'tcx>) -> ControlFlow<Self::BreakTy> {
p.super_visit_with(self)
}
}
@ -329,14 +331,17 @@ impl<'tcx> TyCtxt<'tcx> {
where
F: FnMut(ty::Region<'tcx>) -> bool,
{
fn visit_binder<T: TypeFoldable<'tcx>>(&mut self, t: &Binder<T>) -> ControlFlow<()> {
fn visit_binder<T: TypeFoldable<'tcx>>(
&mut self,
t: &Binder<T>,
) -> ControlFlow<Self::BreakTy> {
self.outer_index.shift_in(1);
let result = t.as_ref().skip_binder().visit_with(self);
self.outer_index.shift_out(1);
result
}
fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow<()> {
fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow<Self::BreakTy> {
match *r {
ty::ReLateBound(debruijn, _) if debruijn < self.outer_index => {
ControlFlow::CONTINUE
@ -351,7 +356,7 @@ impl<'tcx> TyCtxt<'tcx> {
}
}
fn visit_ty(&mut self, ty: Ty<'tcx>) -> ControlFlow<()> {
fn visit_ty(&mut self, ty: Ty<'tcx>) -> ControlFlow<Self::BreakTy> {
// We're only interested in types involving regions
if ty.flags().intersects(TypeFlags::HAS_FREE_REGIONS) {
ty.super_visit_with(self)
@ -844,14 +849,14 @@ struct HasEscapingVarsVisitor {
}
impl<'tcx> TypeVisitor<'tcx> for HasEscapingVarsVisitor {
fn visit_binder<T: TypeFoldable<'tcx>>(&mut self, t: &Binder<T>) -> ControlFlow<()> {
fn visit_binder<T: TypeFoldable<'tcx>>(&mut self, t: &Binder<T>) -> ControlFlow<Self::BreakTy> {
self.outer_index.shift_in(1);
let result = t.super_visit_with(self);
self.outer_index.shift_out(1);
result
}
fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow<()> {
fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow<Self::BreakTy> {
// If the outer-exclusive-binder is *strictly greater* than
// `outer_index`, that means that `t` contains some content
// bound at `outer_index` or above (because
@ -864,7 +869,7 @@ impl<'tcx> TypeVisitor<'tcx> for HasEscapingVarsVisitor {
}
}
fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow<()> {
fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow<Self::BreakTy> {
// If the region is bound by `outer_index` or anything outside
// of outer index, then it escapes the binders we have
// visited.
@ -875,7 +880,7 @@ impl<'tcx> TypeVisitor<'tcx> for HasEscapingVarsVisitor {
}
}
fn visit_const(&mut self, ct: &'tcx ty::Const<'tcx>) -> ControlFlow<()> {
fn visit_const(&mut self, ct: &'tcx ty::Const<'tcx>) -> ControlFlow<Self::BreakTy> {
// we don't have a `visit_infer_const` callback, so we have to
// hook in here to catch this case (annoying...), but
// otherwise we do want to remember to visit the rest of the
@ -887,7 +892,7 @@ impl<'tcx> TypeVisitor<'tcx> for HasEscapingVarsVisitor {
}
}
fn visit_predicate(&mut self, predicate: ty::Predicate<'tcx>) -> ControlFlow<()> {
fn visit_predicate(&mut self, predicate: ty::Predicate<'tcx>) -> ControlFlow<Self::BreakTy> {
if predicate.inner.outer_exclusive_binder > self.outer_index {
ControlFlow::BREAK
} else {
@ -902,7 +907,7 @@ struct HasTypeFlagsVisitor {
}
impl<'tcx> TypeVisitor<'tcx> for HasTypeFlagsVisitor {
fn visit_ty(&mut self, t: Ty<'_>) -> ControlFlow<()> {
fn visit_ty(&mut self, t: Ty<'_>) -> ControlFlow<Self::BreakTy> {
debug!(
"HasTypeFlagsVisitor: t={:?} t.flags={:?} self.flags={:?}",
t,
@ -912,19 +917,19 @@ impl<'tcx> TypeVisitor<'tcx> for HasTypeFlagsVisitor {
if t.flags().intersects(self.flags) { ControlFlow::BREAK } else { ControlFlow::CONTINUE }
}
fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow<()> {
fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow<Self::BreakTy> {
let flags = r.type_flags();
debug!("HasTypeFlagsVisitor: r={:?} r.flags={:?} self.flags={:?}", r, flags, self.flags);
if flags.intersects(self.flags) { ControlFlow::BREAK } else { ControlFlow::CONTINUE }
}
fn visit_const(&mut self, c: &'tcx ty::Const<'tcx>) -> ControlFlow<()> {
fn visit_const(&mut self, c: &'tcx ty::Const<'tcx>) -> ControlFlow<Self::BreakTy> {
let flags = FlagComputation::for_const(c);
debug!("HasTypeFlagsVisitor: c={:?} c.flags={:?} self.flags={:?}", c, flags, self.flags);
if flags.intersects(self.flags) { ControlFlow::BREAK } else { ControlFlow::CONTINUE }
}
fn visit_predicate(&mut self, predicate: ty::Predicate<'tcx>) -> ControlFlow<()> {
fn visit_predicate(&mut self, predicate: ty::Predicate<'tcx>) -> ControlFlow<Self::BreakTy> {
debug!(
"HasTypeFlagsVisitor: predicate={:?} predicate.flags={:?} self.flags={:?}",
predicate, predicate.inner.flags, self.flags
@ -964,14 +969,14 @@ impl LateBoundRegionsCollector {
}
impl<'tcx> TypeVisitor<'tcx> for LateBoundRegionsCollector {
fn visit_binder<T: TypeFoldable<'tcx>>(&mut self, t: &Binder<T>) -> ControlFlow<()> {
fn visit_binder<T: TypeFoldable<'tcx>>(&mut self, t: &Binder<T>) -> ControlFlow<Self::BreakTy> {
self.current_index.shift_in(1);
let result = t.super_visit_with(self);
self.current_index.shift_out(1);
result
}
fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow<()> {
fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow<Self::BreakTy> {
// if we are only looking for "constrained" region, we have to
// ignore the inputs to a projection, as they may not appear
// in the normalized form
@ -984,7 +989,7 @@ impl<'tcx> TypeVisitor<'tcx> for LateBoundRegionsCollector {
t.super_visit_with(self)
}
fn visit_const(&mut self, c: &'tcx ty::Const<'tcx>) -> ControlFlow<()> {
fn visit_const(&mut self, c: &'tcx ty::Const<'tcx>) -> ControlFlow<Self::BreakTy> {
// if we are only looking for "constrained" region, we have to
// ignore the inputs of an unevaluated const, as they may not appear
// in the normalized form
@ -997,7 +1002,7 @@ impl<'tcx> TypeVisitor<'tcx> for LateBoundRegionsCollector {
c.super_visit_with(self)
}
fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow<()> {
fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow<Self::BreakTy> {
if let ty::ReLateBound(debruijn, br) = *r {
if debruijn == self.current_index {
self.regions.insert(br);

2
compiler/rustc_middle/src/ty/mod.rs
View file

@ -1781,7 +1781,7 @@ impl<'tcx> TypeFoldable<'tcx> for ParamEnv<'tcx> {
ParamEnv::new(self.caller_bounds().fold_with(folder), self.reveal().fold_with(folder))
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.caller_bounds().visit_with(visitor)?;
self.reveal().visit_with(visitor)
}

2
compiler/rustc_middle/src/ty/print/pretty.rs
View file

@ -1796,7 +1796,7 @@ impl<F: fmt::Write> FmtPrinter<'_, 'tcx, F> {
{
struct LateBoundRegionNameCollector<'a>(&'a mut FxHashSet<Symbol>);
impl<'tcx> ty::fold::TypeVisitor<'tcx> for LateBoundRegionNameCollector<'_> {
fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow<()> {
fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow<Self::BreakTy> {
if let ty::ReLateBound(_, ty::BrNamed(_, name)) = *r {
self.0.insert(name);
}

54
compiler/rustc_middle/src/ty/structural_impls.rs
View file

@ -729,7 +729,7 @@ impl<'tcx> TypeFoldable<'tcx> for &'tcx ty::AdtDef {
*self
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _visitor: &mut V) -> ControlFlow<V::BreakTy> {
ControlFlow::CONTINUE
}
}
@ -739,7 +739,7 @@ impl<'tcx, T: TypeFoldable<'tcx>, U: TypeFoldable<'tcx>> TypeFoldable<'tcx> for
(self.0.fold_with(folder), self.1.fold_with(folder))
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.0.visit_with(visitor)?;
self.1.visit_with(visitor)
}
@ -752,7 +752,7 @@ impl<'tcx, A: TypeFoldable<'tcx>, B: TypeFoldable<'tcx>, C: TypeFoldable<'tcx>>
(self.0.fold_with(folder), self.1.fold_with(folder), self.2.fold_with(folder))
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.0.visit_with(visitor)?;
self.1.visit_with(visitor)?;
self.2.visit_with(visitor)
@ -778,7 +778,7 @@ impl<'tcx, T: TypeFoldable<'tcx>> TypeFoldable<'tcx> for Rc<T> {
Rc::new((**self).fold_with(folder))
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
(**self).visit_with(visitor)
}
}
@ -788,7 +788,7 @@ impl<'tcx, T: TypeFoldable<'tcx>> TypeFoldable<'tcx> for Arc<T> {
Arc::new((**self).fold_with(folder))
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
(**self).visit_with(visitor)
}
}
@ -799,7 +799,7 @@ impl<'tcx, T: TypeFoldable<'tcx>> TypeFoldable<'tcx> for Box<T> {
box content
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
(**self).visit_with(visitor)
}
}
@ -809,7 +809,7 @@ impl<'tcx, T: TypeFoldable<'tcx>> TypeFoldable<'tcx> for Vec<T> {
self.iter().map(|t| t.fold_with(folder)).collect()
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.iter().try_for_each(|t| t.visit_with(visitor))
}
}
@ -819,7 +819,7 @@ impl<'tcx, T: TypeFoldable<'tcx>> TypeFoldable<'tcx> for Box<[T]> {
self.iter().map(|t| t.fold_with(folder)).collect::<Vec<_>>().into_boxed_slice()
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.iter().try_for_each(|t| t.visit_with(visitor))
}
}
@ -833,11 +833,11 @@ impl<'tcx, T: TypeFoldable<'tcx>> TypeFoldable<'tcx> for ty::Binder<T> {
folder.fold_binder(self)
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.as_ref().skip_binder().visit_with(visitor)
}
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
visitor.visit_binder(self)
}
}
@ -847,7 +847,7 @@ impl<'tcx> TypeFoldable<'tcx> for &'tcx ty::List<ty::ExistentialPredicate<'tcx>>
fold_list(*self, folder, |tcx, v| tcx.intern_existential_predicates(v))
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.iter().try_for_each(|p| p.visit_with(visitor))
}
}
@ -857,7 +857,7 @@ impl<'tcx> TypeFoldable<'tcx> for &'tcx ty::List<Ty<'tcx>> {
fold_list(*self, folder, |tcx, v| tcx.intern_type_list(v))
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.iter().try_for_each(|t| t.visit_with(visitor))
}
}
@ -867,7 +867,7 @@ impl<'tcx> TypeFoldable<'tcx> for &'tcx ty::List<ProjectionKind> {
fold_list(*self, folder, |tcx, v| tcx.intern_projs(v))
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.iter().try_for_each(|t| t.visit_with(visitor))
}
}
@ -893,7 +893,7 @@ impl<'tcx> TypeFoldable<'tcx> for ty::instance::Instance<'tcx> {
}
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
use crate::ty::InstanceDef::*;
self.substs.visit_with(visitor)?;
match self.def {
@ -919,7 +919,7 @@ impl<'tcx> TypeFoldable<'tcx> for interpret::GlobalId<'tcx> {
Self { instance: self.instance.fold_with(folder), promoted: self.promoted }
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.instance.visit_with(visitor)
}
}
@ -968,7 +968,7 @@ impl<'tcx> TypeFoldable<'tcx> for Ty<'tcx> {
folder.fold_ty(*self)
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
match self.kind() {
ty::RawPtr(ref tm) => tm.visit_with(visitor),
ty::Array(typ, sz) => {
@ -1010,7 +1010,7 @@ impl<'tcx> TypeFoldable<'tcx> for Ty<'tcx> {
}
}
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
visitor.visit_ty(self)
}
}
@ -1024,11 +1024,11 @@ impl<'tcx> TypeFoldable<'tcx> for ty::Region<'tcx> {
folder.fold_region(*self)
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _visitor: &mut V) -> ControlFlow<V::BreakTy> {
ControlFlow::CONTINUE
}
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
visitor.visit_region(*self)
}
}
@ -1039,11 +1039,11 @@ impl<'tcx> TypeFoldable<'tcx> for ty::Predicate<'tcx> {
folder.tcx().reuse_or_mk_predicate(*self, new)
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
ty::PredicateKind::super_visit_with(&self.inner.kind, visitor)
}
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
visitor.visit_predicate(*self)
}
@ -1061,7 +1061,7 @@ impl<'tcx> TypeFoldable<'tcx> for &'tcx ty::List<ty::Predicate<'tcx>> {
fold_list(*self, folder, |tcx, v| tcx.intern_predicates(v))
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.iter().try_for_each(|p| p.visit_with(visitor))
}
}
@ -1071,7 +1071,7 @@ impl<'tcx, T: TypeFoldable<'tcx>, I: Idx> TypeFoldable<'tcx> for IndexVec<I, T>
self.iter().map(|x| x.fold_with(folder)).collect()
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.iter().try_for_each(|t| t.visit_with(visitor))
}
}
@ -1091,12 +1091,12 @@ impl<'tcx> TypeFoldable<'tcx> for &'tcx ty::Const<'tcx> {
folder.fold_const(*self)
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.ty.visit_with(visitor)?;
self.val.visit_with(visitor)
}
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
visitor.visit_const(self)
}
}
@ -1116,7 +1116,7 @@ impl<'tcx> TypeFoldable<'tcx> for ty::ConstKind<'tcx> {
}
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
match *self {
ty::ConstKind::Infer(ic) => ic.visit_with(visitor),
ty::ConstKind::Param(p) => p.visit_with(visitor),
@ -1134,7 +1134,7 @@ impl<'tcx> TypeFoldable<'tcx> for InferConst<'tcx> {
*self
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, _visitor: &mut V) -> ControlFlow<V::BreakTy> {
ControlFlow::CONTINUE
}
}

4
compiler/rustc_middle/src/ty/subst.rs
View file

@ -160,7 +160,7 @@ impl<'tcx> TypeFoldable<'tcx> for GenericArg<'tcx> {
}
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
match self.unpack() {
GenericArgKind::Lifetime(lt) => lt.visit_with(visitor),
GenericArgKind::Type(ty) => ty.visit_with(visitor),
@ -392,7 +392,7 @@ impl<'tcx> TypeFoldable<'tcx> for SubstsRef<'tcx> {
}
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<()> {
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
self.iter().try_for_each(|t| t.visit_with(visitor))
}
}