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Rollup merge of #132344 - compiler-errors:same-thing, r=lcnr

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Merge `HostPolarity` and `BoundConstness`

They're basically the same thing, and I think `BoundConstness` is easier to use.

r? fee1-dead or reassign
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Jubilee 2024-10-30 14:01:38 -07:00 • committed by GitHub
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16 changed files with 66 additions and 81 deletions
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4
compiler/rustc_hir_analysis/src/bounds.rs
View file

@ -84,11 +84,11 @@ impl<'tcx> Bounds<'tcx> {
&mut self,
tcx: TyCtxt<'tcx>,
bound_trait_ref: ty::PolyTraitRef<'tcx>,
host: ty::HostPolarity,
constness: ty::BoundConstness,
span: Span,
) {
if tcx.is_const_trait(bound_trait_ref.def_id()) {
self.clauses.push((bound_trait_ref.to_host_effect_clause(tcx, host), span));
self.clauses.push((bound_trait_ref.to_host_effect_clause(tcx, constness), span));
} else {
tcx.dcx().span_delayed_bug(span, "tried to lower {host:?} bound for non-const trait");
}

10
compiler/rustc_hir_analysis/src/check/compare_impl_item.rs
View file

@ -218,7 +218,7 @@ fn compare_method_predicate_entailment<'tcx>(
tcx.const_conditions(trait_m.def_id).instantiate_own(tcx, trait_to_impl_args),
)
.map(|(trait_ref, _)| {
trait_ref.to_host_effect_clause(tcx, ty::HostPolarity::Maybe)
trait_ref.to_host_effect_clause(tcx, ty::BoundConstness::Maybe)
}),
);
}
@ -272,7 +272,7 @@ fn compare_method_predicate_entailment<'tcx>(
tcx,
cause,
param_env,
const_condition.to_host_effect_clause(tcx, ty::HostPolarity::Maybe),
const_condition.to_host_effect_clause(tcx, ty::BoundConstness::Maybe),
));
}
}
@ -1942,7 +1942,7 @@ fn compare_type_predicate_entailment<'tcx>(
tcx.const_conditions(trait_ty.def_id).instantiate_own(tcx, trait_to_impl_args),
)
.map(|(trait_ref, _)| {
trait_ref.to_host_effect_clause(tcx, ty::HostPolarity::Maybe)
trait_ref.to_host_effect_clause(tcx, ty::BoundConstness::Maybe)
}),
);
}
@ -1985,7 +1985,7 @@ fn compare_type_predicate_entailment<'tcx>(
tcx,
cause,
param_env,
const_condition.to_host_effect_clause(tcx, ty::HostPolarity::Maybe),
const_condition.to_host_effect_clause(tcx, ty::BoundConstness::Maybe),
));
}
}
@ -2091,7 +2091,7 @@ pub(super) fn check_type_bounds<'tcx>(
tcx,
mk_cause(span),
param_env,
c.to_host_effect_clause(tcx, ty::HostPolarity::Maybe),
c.to_host_effect_clause(tcx, ty::BoundConstness::Maybe),
)
}),
);

2
compiler/rustc_hir_analysis/src/check/wfcheck.rs
View file

@ -1388,7 +1388,7 @@ fn check_impl<'tcx>(
ObligationCauseCode::WellFormed(None),
),
wfcx.param_env,
bound.to_host_effect_clause(tcx, ty::HostPolarity::Maybe),
bound.to_host_effect_clause(tcx, ty::BoundConstness::Maybe),
))
}
}

12
compiler/rustc_hir_analysis/src/collect/predicates_of.rs
View file

@ -709,7 +709,7 @@ pub(super) fn assert_only_contains_predicates_from<'tcx>(
match clause.kind().skip_binder() {
ty::ClauseKind::HostEffect(ty::HostEffectPredicate {
trait_ref: _,
host: ty::HostPolarity::Maybe,
constness: ty::BoundConstness::Maybe,
}) => {}
_ => {
bug!(
@ -725,8 +725,8 @@ pub(super) fn assert_only_contains_predicates_from<'tcx>(
match clause.kind().skip_binder() {
ty::ClauseKind::HostEffect(pred) => {
assert_eq!(
pred.host,
ty::HostPolarity::Maybe,
pred.constness,
ty::BoundConstness::Maybe,
"expected `~const` predicate when computing `{filter:?}` \
implied bounds: {clause:?}",
);
@ -936,7 +936,7 @@ pub(super) fn const_conditions<'tcx>(
bounds.push_const_bound(
tcx,
ty::Binder::dummy(ty::TraitRef::identity(tcx, def_id.to_def_id())),
ty::HostPolarity::Maybe,
ty::BoundConstness::Maybe,
DUMMY_SP,
);
@ -956,7 +956,7 @@ pub(super) fn const_conditions<'tcx>(
clause.kind().map_bound(|clause| match clause {
ty::ClauseKind::HostEffect(ty::HostEffectPredicate {
trait_ref,
host: ty::HostPolarity::Maybe,
constness: ty::BoundConstness::Maybe,
}) => trait_ref,
_ => bug!("converted {clause:?}"),
}),
@ -994,7 +994,7 @@ pub(super) fn implied_const_bounds<'tcx>(
clause.kind().map_bound(|clause| match clause {
ty::ClauseKind::HostEffect(ty::HostEffectPredicate {
trait_ref,
host: ty::HostPolarity::Maybe,
constness: ty::BoundConstness::Maybe,
}) => trait_ref,
_ => bug!("converted {clause:?}"),
}),

9
compiler/rustc_hir_analysis/src/hir_ty_lowering/mod.rs
View file

@ -721,7 +721,7 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
bounds.push_const_bound(
tcx,
poly_trait_ref,
ty::HostPolarity::Const,
ty::BoundConstness::Const,
span,
);
}
@ -744,7 +744,12 @@ impl<'tcx> dyn HirTyLowerer<'tcx> + '_ {
PredicateFilter::ConstIfConst | PredicateFilter::SelfConstIfConst => match constness {
hir::BoundConstness::Maybe(span) => {
if polarity == ty::PredicatePolarity::Positive {
bounds.push_const_bound(tcx, poly_trait_ref, ty::HostPolarity::Maybe, span);
bounds.push_const_bound(
tcx,
poly_trait_ref,
ty::BoundConstness::Maybe,
span,
);
}
}
hir::BoundConstness::Always(_) | hir::BoundConstness::Never => {}