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Remove the BoundConstness::NotConst variant

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This commit is contained in:
Michael Goulet
2024-10-20 18:33:59 +00:00
parent bfab34af4c
commit 61ed4cb5b4
7 changed files with 46 additions and 41 deletions
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21
compiler/rustc_hir_analysis/src/bounds.rs
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@@ -51,7 +51,7 @@ impl<'tcx> Bounds<'tcx> {
bound_trait_ref: ty::PolyTraitRef<'tcx>,
span: Span,
polarity: ty::PredicatePolarity,
constness: ty::BoundConstness,
constness: Option<ty::BoundConstness>,
predicate_filter: PredicateFilter,
) {
let clause = (
@@ -88,19 +88,20 @@ impl<'tcx> Bounds<'tcx> {
// associated type of `<T as Tr>` and make sure that the effect is compatible.
let compat_val = match (tcx.def_kind(defining_def_id), constness) {
// FIXME(effects): revisit the correctness of this
(_, ty::BoundConstness::Const) => tcx.consts.false_,
(_, Some(ty::BoundConstness::Const)) => tcx.consts.false_,
// body owners that can have trait bounds
(DefKind::Const | DefKind::Fn | DefKind::AssocFn, ty::BoundConstness::ConstIfConst) => {
tcx.expected_host_effect_param_for_body(defining_def_id)
}
(
DefKind::Const | DefKind::Fn | DefKind::AssocFn,
Some(ty::BoundConstness::ConstIfConst),
) => tcx.expected_host_effect_param_for_body(defining_def_id),
(_, ty::BoundConstness::NotConst) => {
(_, None) => {
if !tcx.is_const_trait(bound_trait_ref.def_id()) {
return;
}
tcx.consts.true_
}
(DefKind::Trait, ty::BoundConstness::ConstIfConst) => {
(DefKind::Trait, Some(ty::BoundConstness::ConstIfConst)) => {
// we are in a trait, where `bound_trait_ref` could be:
// (1) a super trait `trait Foo: ~const Bar`.
// - This generates `<Self as Foo>::Effects: TyCompat<<Self as Bar>::Effects>`
@@ -138,7 +139,7 @@ impl<'tcx> Bounds<'tcx> {
return;
}
(DefKind::Impl { of_trait: true }, ty::BoundConstness::ConstIfConst) => {
(DefKind::Impl { of_trait: true }, Some(ty::BoundConstness::ConstIfConst)) => {
// this is a where clause on an impl header.
// push `<T as Tr>::Effects` into the set for the `Min` bound.
let Some(assoc) = tcx.associated_type_for_effects(bound_trait_ref.def_id()) else {
@@ -172,12 +173,12 @@ impl<'tcx> Bounds<'tcx> {
//
// FIXME(effects) this is equality for now, which wouldn't be helpful for a non-const implementor
// that uses a `Bar` that implements `Trait` with `Maybe` effects.
(DefKind::AssocTy, ty::BoundConstness::ConstIfConst) => {
(DefKind::AssocTy, Some(ty::BoundConstness::ConstIfConst)) => {
// FIXME(effects): implement this
return;
}
// probably illegal in this position.
(_, ty::BoundConstness::ConstIfConst) => {
(_, Some(ty::BoundConstness::ConstIfConst)) => {
tcx.dcx().span_delayed_bug(span, "invalid `~const` encountered");
return;
}