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LibIDL: Resolve typedefs in UnionType members recursively

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This commit is contained in:
Linus Groh 2022-10-21 00:42:27 +02:00
parent cede752cd1
commit 775c12f60f
1 changed files with 19 additions and 1 deletions
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20
Userland/Libraries/LibIDL/IDLParser.cpp
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@ -1,6 +1,6 @@
/*
* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
* Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
* Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
* Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>
*
@ -835,6 +835,24 @@ static void resolve_typedef(Interface& interface, NonnullRefPtr<Type>& type, Has
return;
for (auto& attribute : it->value.extended_attributes)
extended_attributes->set(attribute.key, attribute.value);
// Recursively resolve typedefs in unions after we resolved the type itself - e.g. for this:
// typedef (A or B) Union1;
// typedef (C or D) Union2;
// typedef (Union1 or Union2) NestedUnion;
// We run:
// - resolve_typedef(NestedUnion) -> NestedUnion gets replaced by UnionType(Union1, Union2)
// - resolve_typedef(Union1) -> Union1 gets replaced by UnionType(A, B)
// - resolve_typedef(Union2) -> Union2 gets replaced by UnionType(C, D)
// So whatever referenced NestedUnion ends up with the following resolved union:
// UnionType(UnionType(A, B), UnionType(C, D))
// Note that flattening unions is handled separately as per the spec.
if (is<UnionType>(*type)) {
auto union_type = static_ptr_cast<UnionType>(type);
auto& member_types = static_cast<Vector<NonnullRefPtr<Type>>&>(union_type->member_types());
for (auto& member_type : member_types)
resolve_typedef(interface, member_type);
}
}
static void resolve_parameters_typedefs(Interface& interface, Vector<Parameter>& parameters)
{