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81b6a11 regressed correctness by always bypassing the `next()` method
resolution for built-in iterators, causing incorrect behavior when
`next()` was redefined on built-in prototypes. This change fixes the
issue by storing a flag on built-in prototypes indicating whether
`next()` has ever been redefined.
47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
/*
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* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibJS/Runtime/Iterator.h>
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#include <LibJS/Runtime/Object.h>
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#include <LibJS/Runtime/Set.h>
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namespace JS {
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class SetIterator final : public Object
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, public BuiltinIterator {
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JS_OBJECT(SetIterator, Object);
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GC_DECLARE_ALLOCATOR(SetIterator);
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public:
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static GC::Ref<SetIterator> create(Realm&, Set& set, Object::PropertyKind iteration_kind);
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virtual ~SetIterator() override = default;
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BuiltinIterator* as_builtin_iterator_if_next_is_not_redefined() override
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{
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if (m_next_method_was_redefined)
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return nullptr;
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return this;
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}
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ThrowCompletionOr<void> next(VM&, bool& done, Value& value) override;
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private:
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friend class SetIteratorPrototype;
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explicit SetIterator(Set& set, Object::PropertyKind iteration_kind, Object& prototype);
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virtual void visit_edges(Cell::Visitor&) override;
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GC::Ref<Set> m_set;
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bool m_done { false };
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Object::PropertyKind m_iteration_kind;
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Map::ConstIterator m_iterator;
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};
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}
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