bjoernager/rust
bjoernager/rust
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Set the default BreakTy to !

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This commit is contained in:
LeSeulArtichaut 2020-11-14 21:46:39 +01:00
parent df6e87cc85
commit 65cdc21f06
7 changed files with 16 additions and 1 deletions
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5
compiler/rustc_middle/src/ty/fold.rs
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@ -148,6 +148,7 @@ pub trait TypeFoldable<'tcx>: fmt::Debug + Clone {
pub struct Visitor<F>(F);
impl<'tcx, F: FnMut(Ty<'tcx>) -> ControlFlow<()>> TypeVisitor<'tcx> for Visitor<F> {
type BreakTy = ();
fn visit_ty(&mut self, ty: Ty<'tcx>) -> ControlFlow<()> {
self.0(ty)
}
@ -195,7 +196,7 @@ pub trait TypeFolder<'tcx>: Sized {
}
pub trait TypeVisitor<'tcx>: Sized {
type BreakTy = ();
type BreakTy = !;
fn visit_binder<T: TypeFoldable<'tcx>>(&mut self, t: &Binder<T>) -> ControlFlow<Self::BreakTy> {
t.super_visit_with(self)
@ -331,6 +332,8 @@ impl<'tcx> TyCtxt<'tcx> {
where
F: FnMut(ty::Region<'tcx>) -> bool,
{
type BreakTy = ();
fn visit_binder<T: TypeFoldable<'tcx>>(
&mut self,
t: &Binder<T>,