bjoernager/rust
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banish hir::GenericBound::LangItemTrait

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This commit is contained in:
Michael Goulet 2023-11-23 04:55:03 +00:00
parent ad00641b74
commit fc010de26b
12 changed files with 68 additions and 135 deletions
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11
compiler/rustc_hir_analysis/src/astconv/bounds.rs
View file

@ -134,17 +134,6 @@ impl<'tcx> dyn AstConv<'tcx> + '_ {
only_self_bounds,
);
}
&hir::GenericBound::LangItemTrait(lang_item, span, hir_id, args) => {
self.instantiate_lang_item_trait_ref(
lang_item,
span,
hir_id,
args,
param_ty,
bounds,
only_self_bounds,
);
}
hir::GenericBound::Outlives(lifetime) => {
let region = self.ast_region_to_region(lifetime, None);
bounds.push_region_bound(

37
compiler/rustc_hir_analysis/src/astconv/mod.rs
View file

@ -791,6 +791,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
self.prohibit_generics(trait_ref.path.segments.split_last().unwrap().1.iter(), |_| {});
self.complain_about_internal_fn_trait(span, trait_def_id, trait_segment, false);
// TODO: inline
self.instantiate_poly_trait_ref_inner(
hir_id,
span,
@ -809,42 +810,6 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
)
}
pub(crate) fn instantiate_lang_item_trait_ref(
&self,
lang_item: hir::LangItem,
span: Span,
hir_id: hir::HirId,
args: &GenericArgs<'_>,
self_ty: Ty<'tcx>,
bounds: &mut Bounds<'tcx>,
only_self_bounds: OnlySelfBounds,
) {
let binding_span = Some(span);
let constness = ty::BoundConstness::NotConst;
let speculative = false;
let trait_ref_span = span;
let trait_def_id = self.tcx().require_lang_item(lang_item, Some(span));
let trait_segment = &hir::PathSegment::invalid();
let infer_args = false;
self.instantiate_poly_trait_ref_inner(
hir_id,
span,
binding_span,
constness,
ty::ImplPolarity::Positive,
bounds,
speculative,
trait_ref_span,
trait_def_id,
trait_segment,
args,
infer_args,
self_ty,
only_self_bounds,
);
}
fn ast_path_to_mono_trait_ref(
&self,
span: Span,

26
compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs
View file

@ -938,32 +938,6 @@ impl<'a, 'tcx> Visitor<'tcx> for BoundVarContext<'a, 'tcx> {
}
}
fn visit_param_bound(&mut self, bound: &'tcx hir::GenericBound<'tcx>) {
match bound {
hir::GenericBound::LangItemTrait(_, _, hir_id, _) => {
// FIXME(jackh726): This is pretty weird. `LangItemTrait` doesn't go
// through the regular poly trait ref code, so we don't get another
// chance to introduce a binder. For now, I'm keeping the existing logic
// of "if there isn't a Binder scope above us, add one", but I
// imagine there's a better way to go about this.
let (binders, scope_type) = self.poly_trait_ref_binder_info();
self.record_late_bound_vars(*hir_id, binders);
let scope = Scope::Binder {
hir_id: *hir_id,
bound_vars: FxIndexMap::default(),
s: self.scope,
scope_type,
where_bound_origin: None,
};
self.with(scope, |this| {
intravisit::walk_param_bound(this, bound);
});
}
_ => intravisit::walk_param_bound(self, bound),
}
}
fn visit_poly_trait_ref(&mut self, trait_ref: &'tcx hir::PolyTraitRef<'tcx>) {
self.visit_poly_trait_ref_inner(trait_ref, NonLifetimeBinderAllowed::Allow);
}