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Make TypeFoldable implementors short-circuit on error

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Co-authored-by: Alan Egerton <eggyal@gmail.com>
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LeSeulArtichaut 2021-05-19 13:34:54 +02:00 • committed by Alan Egerton
parent c5f0d0ebb4
commit 6e3fa20b00
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11 changed files with 299 additions and 204 deletions
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10
compiler/rustc_middle/src/mir/mod.rs
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@ -2760,11 +2760,11 @@ impl UserTypeProjection {
TrivialTypeFoldableAndLiftImpls! { ProjectionKind, }
impl<'tcx> TypeFoldable<'tcx> for UserTypeProjection {
fn super_fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Self {
UserTypeProjection {
base: self.base.fold_with(folder),
projs: self.projs.fold_with(folder),
}
fn super_fold_with<F: TypeFolder<'tcx>>(self, folder: &mut F) -> Result<Self, F::Error> {
Ok(UserTypeProjection {
base: self.base.fold_with(folder)?,
projs: self.projs.fold_with(folder)?,
})
}
fn super_visit_with<Vs: TypeVisitor<'tcx>>(