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Remove more Clean trait implementations #100193

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merged 2 commits into from
Aug 6, 2022
Merged

Remove more Clean trait implementations #100193

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ca70ed8
remove Clean trait implementation for hir::GenericBound
GuillaumeGomez Aug 6, 2022
71edb31
remove Clean trait implementation for hir::PolyTraitRef
GuillaumeGomez Aug 6, 2022
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90 changes: 42 additions & 48 deletions src/librustdoc/clean/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -126,40 +126,40 @@ impl<'tcx> Clean<'tcx, Item> for DocModule<'tcx> {
}
}

impl<'tcx> Clean<'tcx, Option<GenericBound>> for hir::GenericBound<'tcx> {
fn clean(&self, cx: &mut DocContext<'tcx>) -> Option<GenericBound> {
Some(match *self {
hir::GenericBound::Outlives(lt) => GenericBound::Outlives(clean_lifetime(lt, cx)),
hir::GenericBound::LangItemTrait(lang_item, span, _, generic_args) => {
let def_id = cx.tcx.require_lang_item(lang_item, Some(span));

let trait_ref = ty::TraitRef::identity(cx.tcx, def_id).skip_binder();

let generic_args = generic_args.clean(cx);
let GenericArgs::AngleBracketed { bindings, .. } = generic_args
else {
bug!("clean: parenthesized `GenericBound::LangItemTrait`");
};
fn clean_generic_bound<'tcx>(
bound: &hir::GenericBound<'tcx>,
cx: &mut DocContext<'tcx>,
) -> Option<GenericBound> {
Some(match *bound {
hir::GenericBound::Outlives(lt) => GenericBound::Outlives(clean_lifetime(lt, cx)),
hir::GenericBound::LangItemTrait(lang_item, span, _, generic_args) => {
let def_id = cx.tcx.require_lang_item(lang_item, Some(span));

let trait_ref = ty::TraitRef::identity(cx.tcx, def_id).skip_binder();

let generic_args = generic_args.clean(cx);
let GenericArgs::AngleBracketed { bindings, .. } = generic_args
else {
bug!("clean: parenthesized `GenericBound::LangItemTrait`");
};

let trait_ = clean_trait_ref_with_bindings(cx, trait_ref, &bindings);
GenericBound::TraitBound(
PolyTrait { trait_, generic_params: vec![] },
hir::TraitBoundModifier::None,
)
let trait_ = clean_trait_ref_with_bindings(cx, trait_ref, &bindings);
GenericBound::TraitBound(
PolyTrait { trait_, generic_params: vec![] },
hir::TraitBoundModifier::None,
)
}
hir::GenericBound::Trait(ref t, modifier) => {
// `T: ~const Destruct` is hidden because `T: Destruct` is a no-op.
if modifier == hir::TraitBoundModifier::MaybeConst
&& cx.tcx.lang_items().destruct_trait() == Some(t.trait_ref.trait_def_id().unwrap())
{
return None;
}
hir::GenericBound::Trait(ref t, modifier) => {
// `T: ~const Destruct` is hidden because `T: Destruct` is a no-op.
if modifier == hir::TraitBoundModifier::MaybeConst
&& cx.tcx.lang_items().destruct_trait()
== Some(t.trait_ref.trait_def_id().unwrap())
{
return None;
}

GenericBound::TraitBound(clean_poly_trait_ref(t, cx), modifier)
}
})
}
GenericBound::TraitBound(clean_poly_trait_ref(t, cx), modifier)
}
})
}

pub(crate) fn clean_trait_ref_with_bindings<'tcx>(
Expand Down Expand Up @@ -207,12 +207,6 @@ fn clean_poly_trait_ref_with_bindings<'tcx>(
)
}

impl<'tcx> Clean<'tcx, GenericBound> for ty::PolyTraitRef<'tcx> {
fn clean(&self, cx: &mut DocContext<'tcx>) -> GenericBound {
clean_poly_trait_ref_with_bindings(cx, *self, &[])
}
}

fn clean_lifetime<'tcx>(lifetime: hir::Lifetime, cx: &mut DocContext<'tcx>) -> Lifetime {
let def = cx.tcx.named_region(lifetime.hir_id);
if let Some(
Expand Down Expand Up @@ -294,14 +288,14 @@ impl<'tcx> Clean<'tcx, Option<WherePredicate>> for hir::WherePredicate<'tcx> {
.collect();
WherePredicate::BoundPredicate {
ty: clean_ty(wbp.bounded_ty, cx),
bounds: wbp.bounds.iter().filter_map(|x| x.clean(cx)).collect(),
bounds: wbp.bounds.iter().filter_map(|x| clean_generic_bound(x, cx)).collect(),
bound_params,
}
}

hir::WherePredicate::RegionPredicate(ref wrp) => WherePredicate::RegionPredicate {
lifetime: clean_lifetime(wrp.lifetime, cx),
bounds: wrp.bounds.iter().filter_map(|x| x.clean(cx)).collect(),
bounds: wrp.bounds.iter().filter_map(|x| clean_generic_bound(x, cx)).collect(),
},

hir::WherePredicate::EqPredicate(ref wrp) => WherePredicate::EqPredicate {
Expand Down Expand Up @@ -349,7 +343,7 @@ fn clean_poly_trait_predicate<'tcx>(
let poly_trait_ref = pred.map_bound(|pred| pred.trait_ref);
Some(WherePredicate::BoundPredicate {
ty: clean_middle_ty(poly_trait_ref.skip_binder().self_ty(), cx, None),
bounds: vec![poly_trait_ref.clean(cx)],
bounds: vec![clean_poly_trait_ref_with_bindings(cx, poly_trait_ref, &[])],
bound_params: Vec::new(),
})
}
Expand Down Expand Up @@ -531,7 +525,7 @@ fn clean_generic_param<'tcx>(
.bounds_for_param(did)
.filter(|bp| bp.origin != PredicateOrigin::WhereClause)
.flat_map(|bp| bp.bounds)
.filter_map(|x| x.clean(cx))
.filter_map(|x| clean_generic_bound(x, cx))
.collect()
} else {
Vec::new()
Expand Down Expand Up @@ -1041,7 +1035,7 @@ fn clean_trait_item<'tcx>(trait_item: &hir::TraitItem<'tcx>, cx: &mut DocContext
}
hir::TraitItemKind::Type(bounds, Some(default)) => {
let generics = enter_impl_trait(cx, |cx| trait_item.generics.clean(cx));
let bounds = bounds.iter().filter_map(|x| x.clean(cx)).collect();
let bounds = bounds.iter().filter_map(|x| clean_generic_bound(x, cx)).collect();
let item_type = clean_middle_ty(hir_ty_to_ty(cx.tcx, default), cx, None);
AssocTypeItem(
Box::new(Typedef {
Expand All @@ -1054,7 +1048,7 @@ fn clean_trait_item<'tcx>(trait_item: &hir::TraitItem<'tcx>, cx: &mut DocContext
}
hir::TraitItemKind::Type(bounds, None) => {
let generics = enter_impl_trait(cx, |cx| trait_item.generics.clean(cx));
let bounds = bounds.iter().filter_map(|x| x.clean(cx)).collect();
let bounds = bounds.iter().filter_map(|x| clean_generic_bound(x, cx)).collect();
TyAssocTypeItem(Box::new(generics), bounds)
}
};
Expand Down Expand Up @@ -1507,7 +1501,7 @@ pub(crate) fn clean_ty<'tcx>(ty: &hir::Ty<'tcx>, cx: &mut DocContext<'tcx>) -> T
TyKind::OpaqueDef(item_id, _) => {
let item = cx.tcx.hir().item(item_id);
if let hir::ItemKind::OpaqueTy(ref ty) = item.kind {
ImplTrait(ty.bounds.iter().filter_map(|x| x.clean(cx)).collect())
ImplTrait(ty.bounds.iter().filter_map(|x| clean_generic_bound(x, cx)).collect())
} else {
unreachable!()
}
Expand Down Expand Up @@ -1911,7 +1905,7 @@ fn clean_maybe_renamed_item<'tcx>(
kind: ConstantKind::Local { body: body_id, def_id },
}),
ItemKind::OpaqueTy(ref ty) => OpaqueTyItem(OpaqueTy {
bounds: ty.bounds.iter().filter_map(|x| x.clean(cx)).collect(),
bounds: ty.bounds.iter().filter_map(|x| clean_generic_bound(x, cx)).collect(),
generics: ty.generics.clean(cx),
}),
ItemKind::TyAlias(hir_ty, generics) => {
Expand All @@ -1929,7 +1923,7 @@ fn clean_maybe_renamed_item<'tcx>(
}),
ItemKind::TraitAlias(generics, bounds) => TraitAliasItem(TraitAlias {
generics: generics.clean(cx),
bounds: bounds.iter().filter_map(|x| x.clean(cx)).collect(),
bounds: bounds.iter().filter_map(|x| clean_generic_bound(x, cx)).collect(),
}),
ItemKind::Union(ref variant_data, generics) => UnionItem(Union {
generics: generics.clean(cx),
Expand Down Expand Up @@ -1961,7 +1955,7 @@ fn clean_maybe_renamed_item<'tcx>(
def_id,
items,
generics: generics.clean(cx),
bounds: bounds.iter().filter_map(|x| x.clean(cx)).collect(),
bounds: bounds.iter().filter_map(|x| clean_generic_bound(x, cx)).collect(),
})
}
ItemKind::ExternCrate(orig_name) => {
Expand Down Expand Up @@ -2241,7 +2235,7 @@ fn clean_type_binding<'tcx>(
TypeBindingKind::Equality { term: clean_hir_term(term, cx) }
}
hir::TypeBindingKind::Constraint { bounds } => TypeBindingKind::Constraint {
bounds: bounds.iter().filter_map(|b| b.clean(cx)).collect(),
bounds: bounds.iter().filter_map(|b| clean_generic_bound(b, cx)).collect(),
},
},
}
Expand Down