bjoernager/rust
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a small wf and clause cleanup

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This commit is contained in:
lcnr 2023-09-29 11:34:50 +02:00
parent c1f86f0bc8
commit a4f6770d83
8 changed files with 58 additions and 64 deletions
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9
compiler/rustc_hir_analysis/src/check/compare_impl_item.rs
View file

@ -16,6 +16,7 @@ use rustc_infer::traits::util;
use rustc_middle::ty::error::{ExpectedFound, TypeError};
use rustc_middle::ty::fold::BottomUpFolder;
use rustc_middle::ty::util::ExplicitSelf;
use rustc_middle::ty::ToPredicate;
use rustc_middle::ty::{
self, GenericArgs, Ty, TypeFoldable, TypeFolder, TypeSuperFoldable, TypeVisitableExt,
};
@ -2279,16 +2280,16 @@ pub(super) fn check_type_bounds<'tcx>(
//
// impl<T> X for T where T: X { type Y = <T as X>::Y; }
}
_ => predicates.push(ty::Clause::from_projection_clause(
tcx,
_ => predicates.push(
ty::Binder::bind_with_vars(
ty::ProjectionPredicate {
projection_ty: tcx.mk_alias_ty(trait_ty.def_id, rebased_args),
term: normalize_impl_ty.into(),
},
bound_vars,
),
)),
)
.to_predicate(tcx),
),
};
ty::ParamEnv::new(tcx.mk_clauses(&predicates), Reveal::UserFacing)
};

14
compiler/rustc_hir_analysis/src/check/wfcheck.rs
View file

@ -1105,11 +1105,11 @@ fn check_associated_type_bounds(wfcx: &WfCheckingCtxt<'_, '_>, item: ty::AssocIt
let wf_obligations =
bounds.instantiate_identity_iter_copied().flat_map(|(bound, bound_span)| {
let normalized_bound = wfcx.normalize(span, None, bound);
traits::wf::predicate_obligations(
traits::wf::clause_obligations(
wfcx.infcx,
wfcx.param_env,
wfcx.body_def_id,
normalized_bound.as_predicate(),
normalized_bound,
bound_span,
)
});
@ -1209,7 +1209,7 @@ fn check_impl<'tcx>(
wfcx.infcx,
wfcx.param_env,
wfcx.body_def_id,
&trait_pred,
trait_pred,
ast_trait_ref.path.span,
item,
);
@ -1418,13 +1418,7 @@ fn check_where_clauses<'tcx>(wfcx: &WfCheckingCtxt<'_, 'tcx>, span: Span, def_id
debug!(?predicates.predicates);
assert_eq!(predicates.predicates.len(), predicates.spans.len());
let wf_obligations = predicates.into_iter().flat_map(|(p, sp)| {
traits::wf::predicate_obligations(
infcx,
wfcx.param_env,
wfcx.body_def_id,
p.as_predicate(),
sp,
)
traits::wf::clause_obligations(infcx, wfcx.param_env, wfcx.body_def_id, p, sp)
});
let obligations: Vec<_> = wf_obligations.chain(default_obligations).collect();
wfcx.register_obligations(obligations);