bjoernager/rust
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shrink ty::PredicateKind again

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This commit is contained in:
lcnr 2021-08-02 08:47:15 +02:00
parent 283e0e670b
commit bc0156bace
12 changed files with 68 additions and 22 deletions
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25
compiler/rustc_middle/src/ty/structural_impls.rs
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@ -1105,3 +1105,28 @@ impl<'tcx> TypeFoldable<'tcx> for ty::Unevaluated<'tcx> {
}
}
}
impl<'tcx> TypeFoldable<'tcx> for ty::Unevaluated<'tcx, ()> {
fn super_fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self {
ty::Unevaluated {
def: self.def,
substs_: Some(self.substs(folder.tcx()).fold_with(folder)),
promoted: self.promoted,
}
}
fn visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
visitor.visit_unevaluated_const(self.expand())
}
fn super_visit_with<V: TypeVisitor<'tcx>>(&self, visitor: &mut V) -> ControlFlow<V::BreakTy> {
if let Some(tcx) = visitor.tcx_for_anon_const_substs() {
self.substs(tcx).visit_with(visitor)
} else if let Some(substs) = self.substs_ {
substs.visit_with(visitor)
} else {
debug!("ignoring default substs of `{:?}`", self.def);
ControlFlow::CONTINUE
}
}
}