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LibJS: Stop using a native property for Array lengths

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Specifically, replace it with a specification-based implementation that
overrides the internal methods that interact with the length property
instead.
This commit is contained in:
Idan Horowitz 2021-07-07 03:50:19 +03:00 • committed by Linus Groh
parent fff112c8a3
commit c351b4ad0d
5 changed files with 222 additions and 67 deletions
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13
Userland/Libraries/LibJS/Runtime/Array.h
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@ -18,14 +18,19 @@ public:
static Array* create_from(GlobalObject&, Vector<Value> const&);
explicit Array(Object& prototype);
virtual void initialize(GlobalObject&) override;
virtual ~Array() override;
static Array* typed_this(VM&, GlobalObject&);
virtual Optional<PropertyDescriptor> internal_get_own_property(PropertyName const&) const override;
virtual bool internal_define_own_property(PropertyName const&, PropertyDescriptor const&) override;
virtual bool internal_delete(PropertyName const&) override;
virtual MarkedValueList internal_own_property_keys() const override;
[[nodiscard]] bool length_is_writable() const { return m_length_writable; };
private:
JS_DECLARE_NATIVE_GETTER(length_getter);
JS_DECLARE_NATIVE_SETTER(length_setter);
bool set_length(PropertyDescriptor const&);
bool m_length_writable { true };
};
}