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Rollup merge of #115727 - fee1-dead-contrib:effect-fallback, r=oli-obk

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Implement fallback for effect param

r? `@oli-obk` or `@lcnr`

tracking issue for this ongoing work: https://github.com/rust-lang/rust/issues/110395
This commit is contained in:
Matthias Krüger 2023-09-11 17:03:31 +02:00 • committed by GitHub
commit e7a347baf8
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GPG key ID: 4AEE18F83AFDEB23
26 changed files with 404 additions and 79 deletions
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8
compiler/rustc_middle/src/ty/structural_impls.rs
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@ -138,6 +138,12 @@ impl<'tcx> fmt::Debug for ty::ConstVid<'tcx> {
}
}
impl fmt::Debug for ty::EffectVid<'_> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "?{}e", self.index)
}
}
impl<'tcx> fmt::Debug for ty::TraitRef<'tcx> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
with_no_trimmed_paths!(fmt::Display::fmt(self, f))
@ -253,6 +259,7 @@ impl<'tcx> fmt::Debug for ty::InferConst<'tcx> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
InferConst::Var(var) => write!(f, "{var:?}"),
InferConst::EffectVar(var) => write!(f, "{var:?}"),
InferConst::Fresh(var) => write!(f, "Fresh({var:?})"),
}
}
@ -267,6 +274,7 @@ impl<'tcx> DebugWithInfcx<TyCtxt<'tcx>> for ty::InferConst<'tcx> {
None => write!(f, "{:?}", this.data),
Some(universe) => match *this.data {
Var(vid) => write!(f, "?{}_{}c", vid.index, universe.index()),
EffectVar(vid) => write!(f, "?{}_{}e", vid.index, universe.index()),
Fresh(_) => {
unreachable!()
}