r20.cpp

// cl -std:c++20 /permissive- -c r20.cpp
// https://webkit.org/b/234546

template<typename T>
struct RefPtr {
    RefPtr(T* ptr) : m_ptr(ptr) { }
    T* operator->() { return m_ptr; }
    bool operator!() const { return !m_ptr; }
    T* m_ptr;
};

struct Element {
    Element* parentElement();
    bool isSVGElement();
};

template<typename AnimationFunction>
class SVGPropertyAnimator {
public:
    bool computeInheritedCSSPropertyValue(Element& targetElement) const
    {
        RefPtr parent = targetElement.parentElement();
        return !(parent->isSVGElement());
    }

    bool computeInheritedCSSPropertyValue2(Element& targetElement) const
    {
        RefPtr parent = targetElement.parentElement();
        return !parent;
    }
};