bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

Remove PredicateKind::Atom

Browse source
This commit is contained in:
Jack Huey 2020-12-21 22:49:03 -05:00
parent 8a6518427e
commit 8278314a8b
12 changed files with 73 additions and 101 deletions
Download patch file Download diff file Expand all files Collapse all files

78
compiler/rustc_trait_selection/src/traits/fulfill.rs
View file

@ -346,45 +346,47 @@ impl<'a, 'b, 'tcx> FulfillProcessor<'a, 'b, 'tcx> {
let infcx = self.selcx.infcx();
match *obligation.predicate.kind() {
ty::PredicateKind::ForAll(binder) if binder.skip_binder().has_escaping_bound_vars() => {
match binder.skip_binder() {
// Evaluation will discard candidates using the leak check.
// This means we need to pass it the bound version of our
// predicate.
ty::PredicateAtom::Trait(trait_ref, _constness) => {
let trait_obligation = obligation.with(binder.rebind(trait_ref));
self.process_trait_obligation(
obligation,
trait_obligation,
&mut pending_obligation.stalled_on,
)
}
ty::PredicateAtom::Projection(data) => {
let project_obligation = obligation.with(binder.rebind(data));
self.process_projection_obligation(
project_obligation,
&mut pending_obligation.stalled_on,
)
}
ty::PredicateAtom::RegionOutlives(_)
| ty::PredicateAtom::TypeOutlives(_)
| ty::PredicateAtom::WellFormed(_)
| ty::PredicateAtom::ObjectSafe(_)
| ty::PredicateAtom::ClosureKind(..)
| ty::PredicateAtom::Subtype(_)
| ty::PredicateAtom::ConstEvaluatable(..)
| ty::PredicateAtom::ConstEquate(..) => {
let pred = infcx.replace_bound_vars_with_placeholders(binder);
ProcessResult::Changed(mk_pending(vec![
obligation.with(pred.to_predicate(self.selcx.tcx())),
]))
}
ty::PredicateAtom::TypeWellFormedFromEnv(..) => {
bug!("TypeWellFormedFromEnv is only used for Chalk")
}
}
}
ty::PredicateKind::ForAll(binder) => match binder.skip_binder() {
// Evaluation will discard candidates using the leak check.
// This means we need to pass it the bound version of our
// predicate.
ty::PredicateAtom::Trait(trait_ref, _constness) => {
let trait_obligation = obligation.with(binder.rebind(trait_ref));
self.process_trait_obligation(
obligation,
trait_obligation,
&mut pending_obligation.stalled_on,
)
}
ty::PredicateAtom::Projection(data) => {
let project_obligation = obligation.with(binder.rebind(data));
self.process_projection_obligation(
project_obligation,
&mut pending_obligation.stalled_on,
)
}
ty::PredicateAtom::RegionOutlives(_)
| ty::PredicateAtom::TypeOutlives(_)
| ty::PredicateAtom::WellFormed(_)
| ty::PredicateAtom::ObjectSafe(_)
| ty::PredicateAtom::ClosureKind(..)
| ty::PredicateAtom::Subtype(_)
| ty::PredicateAtom::ConstEvaluatable(..)
| ty::PredicateAtom::ConstEquate(..) => {
let pred = infcx.replace_bound_vars_with_placeholders(binder);
ProcessResult::Changed(mk_pending(vec![
obligation.with(pred.to_predicate(self.selcx.tcx())),
]))
}
ty::PredicateAtom::TypeWellFormedFromEnv(..) => {
bug!("TypeWellFormedFromEnv is only used for Chalk")
}
},
ty::PredicateKind::Atom(atom) => match atom {
ty::PredicateAtom::Trait(data, _) => {
let trait_obligation = obligation.with(Binder::dummy(data));