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hir_ty: check field visibility while iterating through autoderef candidates

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This commit is contained in:
cynecx 2021-03-20 19:07:23 +01:00
parent 30980396af
commit b1b456c642
1 changed files with 36 additions and 14 deletions
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34
crates/hir_ty/src/infer/expr.rs
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@ -442,27 +442,49 @@ impl<'a> InferenceContext<'a> {
},
)
.find_map(|derefed_ty| {
let def_db = self.db.upcast();
let module = self.resolver.module();
let is_visible = |field_id: &FieldId| {
module
.map(|mod_id| {
self.db.field_visibilities(field_id.parent)[field_id.local_id]
.is_visible_from(def_db, mod_id)
})
.unwrap_or(true)
};
match canonicalized.decanonicalize_ty(derefed_ty.value).interned(&Interner) {
TyKind::Tuple(_, substs) => {
name.as_tuple_index().and_then(|idx| substs.0.get(idx).cloned())
}
TyKind::Adt(AdtId(hir_def::AdtId::StructId(s)), parameters) => {
self.db.struct_data(*s).variant_data.field(name).map(|local_id| {
let local_id = self.db.struct_data(*s).variant_data.field(name)?;
let field = FieldId { parent: (*s).into(), local_id };
let is_visible_in_ctx = is_visible(&field);
self.write_field_resolution(tgt_expr, field);
if is_visible_in_ctx {
Some(
self.db.field_types((*s).into())[field.local_id]
.clone()
.subst(&parameters)
})
.subst(&parameters),
)
} else {
None
}
}
TyKind::Adt(AdtId(hir_def::AdtId::UnionId(u)), parameters) => {
self.db.union_data(*u).variant_data.field(name).map(|local_id| {
let local_id = self.db.union_data(*u).variant_data.field(name)?;
let field = FieldId { parent: (*u).into(), local_id };
let is_visible_in_ctx = is_visible(&field);
self.write_field_resolution(tgt_expr, field);
if is_visible_in_ctx {
Some(
self.db.field_types((*u).into())[field.local_id]
.clone()
.subst(&parameters)
})
.subst(&parameters),
)
} else {
None
}
}
_ => None,
}