bool
JavaScriptShared::toDescriptor(JSContext* cx, const PPropertyDescriptor& in,
                               MutableHandle<JSPropertyDescriptor> out)
{
    out.setAttributes(in.attrs());
    if (!fromVariant(cx, in.value(), out.value()))
        return false;
    out.object().set(fromObjectOrNullVariant(cx, in.obj()));

    if (in.getter().type() == GetterSetter::Tuint64_t && !in.getter().get_uint64_t()) {
        out.setGetter(nullptr);
    } else if (in.attrs() & JSPROP_GETTER) {
        Rooted<JSObject*> getter(cx);
        getter = fromObjectVariant(cx, in.getter().get_ObjectVariant());
        if (!getter)
            return false;
        out.setGetter(JS_DATA_TO_FUNC_PTR(JSGetterOp, getter.get()));
    } else {
        out.setGetter(UnknownPropertyStub);
    }

    if (in.setter().type() == GetterSetter::Tuint64_t && !in.setter().get_uint64_t()) {
        out.setSetter(nullptr);
    } else if (in.attrs() & JSPROP_SETTER) {
        Rooted<JSObject*> setter(cx);
        setter = fromObjectVariant(cx, in.setter().get_ObjectVariant());
        if (!setter)
            return false;
        out.setSetter(JS_DATA_TO_FUNC_PTR(JSSetterOp, setter.get()));
    } else {
        out.setSetter(UnknownStrictPropertyStub);
    }

    return true;
}