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Migrate predicates_of and caller_bounds to Clause

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This commit is contained in:
Michael Goulet 2023-06-22 18:17:13 +00:00
parent 36fb58e433
commit fbdef58414
77 changed files with 478 additions and 705 deletions
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6
compiler/rustc_infer/src/infer/canonical/query_response.rs
View file

@ -739,10 +739,8 @@ impl<'tcx> TypeRelatingDelegate<'tcx> for QueryTypeRelatingDelegate<'_, 'tcx> {
self.obligations.push(Obligation {
cause: self.cause.clone(),
param_env: self.param_env,
predicate: ty::Binder::dummy(ty::PredicateKind::Clause(
ty::ClauseKind::RegionOutlives(ty::OutlivesPredicate(sup, sub)),
))
.to_predicate(self.infcx.tcx),
predicate: ty::ClauseKind::RegionOutlives(ty::OutlivesPredicate(sup, sub))
.to_predicate(self.infcx.tcx),
recursion_depth: 0,
});
}

29
compiler/rustc_infer/src/infer/outlives/mod.rs
View file

@ -20,27 +20,18 @@ pub fn explicit_outlives_bounds<'tcx>(
param_env
.caller_bounds()
.into_iter()
.map(ty::Predicate::kind)
.map(ty::Clause::kind)
.filter_map(ty::Binder::no_bound_vars)
.filter_map(move |kind| match kind {
ty::PredicateKind::Clause(ty::ClauseKind::Projection(..))
| ty::PredicateKind::Clause(ty::ClauseKind::Trait(..))
| ty::PredicateKind::Clause(ty::ClauseKind::ConstArgHasType(..))
| ty::PredicateKind::AliasRelate(..)
| ty::PredicateKind::Coerce(..)
| ty::PredicateKind::Subtype(..)
| ty::PredicateKind::Clause(ty::ClauseKind::WellFormed(..))
| ty::PredicateKind::ObjectSafe(..)
| ty::PredicateKind::ClosureKind(..)
| ty::PredicateKind::Clause(ty::ClauseKind::TypeOutlives(..))
| ty::PredicateKind::Clause(ty::ClauseKind::ConstEvaluatable(..))
| ty::PredicateKind::ConstEquate(..)
| ty::PredicateKind::Ambiguous
| ty::PredicateKind::TypeWellFormedFromEnv(..) => None,
ty::PredicateKind::Clause(ty::ClauseKind::RegionOutlives(ty::OutlivesPredicate(
r_a,
r_b,
))) => Some(OutlivesBound::RegionSubRegion(r_b, r_a)),
ty::ClauseKind::RegionOutlives(ty::OutlivesPredicate(r_a, r_b)) => {
Some(OutlivesBound::RegionSubRegion(r_b, r_a))
}
ty::ClauseKind::Trait(_)
| ty::ClauseKind::TypeOutlives(_)
| ty::ClauseKind::Projection(_)
| ty::ClauseKind::ConstArgHasType(_, _)
| ty::ClauseKind::WellFormed(_)
| ty::ClauseKind::ConstEvaluatable(_) => None,
})
}

8
compiler/rustc_infer/src/infer/outlives/verify.rs
View file

@ -223,7 +223,7 @@ impl<'cx, 'tcx> VerifyBoundCx<'cx, 'tcx> {
// parameter environments are already elaborated, so we don't
// have to worry about that.
let c_b = self.param_env.caller_bounds();
let param_bounds = self.collect_outlives_from_predicate_list(erased_ty, c_b.into_iter());
let param_bounds = self.collect_outlives_from_clause_list(erased_ty, c_b.into_iter());
// Next, collect regions we scraped from the well-formedness
// constraints in the fn signature. To do that, we walk the list
@ -307,15 +307,15 @@ impl<'cx, 'tcx> VerifyBoundCx<'cx, 'tcx> {
/// when comparing `ty` for equality, so `ty` must be something
/// that does not involve inference variables and where you
/// otherwise want a precise match.
fn collect_outlives_from_predicate_list(
fn collect_outlives_from_clause_list(
&self,
erased_ty: Ty<'tcx>,
predicates: impl Iterator<Item = ty::Predicate<'tcx>>,
clauses: impl Iterator<Item = ty::Clause<'tcx>>,
) -> impl Iterator<Item = ty::Binder<'tcx, ty::OutlivesPredicate<Ty<'tcx>, ty::Region<'tcx>>>>
{
let tcx = self.tcx;
let param_env = self.param_env;
predicates.filter_map(|p| p.to_opt_type_outlives()).filter(move |outlives_predicate| {
clauses.filter_map(|p| p.as_type_outlives_clause()).filter(move |outlives_predicate| {
super::test_type_match::can_match_erased_ty(
tcx,
param_env,

5
compiler/rustc_infer/src/traits/util.rs
View file

@ -258,7 +258,8 @@ impl<'tcx, O: Elaboratable<'tcx>> Elaborator<'tcx, O> {
pred = pred.without_const(tcx);
}
elaboratable.child_with_derived_cause(
pred.subst_supertrait(tcx, &bound_predicate.rebind(data.trait_ref)),
pred.subst_supertrait(tcx, &bound_predicate.rebind(data.trait_ref))
.as_predicate(),
span,
bound_predicate.rebind(data),
index,
@ -440,7 +441,7 @@ pub fn transitive_bounds_that_define_assoc_item<'tcx>(
tcx.super_predicates_that_define_assoc_item((trait_ref.def_id(), assoc_name));
for (super_predicate, _) in super_predicates.predicates {
let subst_predicate = super_predicate.subst_supertrait(tcx, &trait_ref);
if let Some(binder) = subst_predicate.to_opt_poly_trait_pred() {
if let Some(binder) = subst_predicate.as_trait_clause() {
stack.push(binder.map_bound(|t| t.trait_ref));
}
}