What’s the problem with computing it at compile time?
On Apr 26, 2016, at 6:31 PM, Alex Harui <[email protected]> wrote:
> It calls Language.superGetter
>
> static public function superGetter(clazz:Object, pthis:Object,
> prop:String):Object
> {
> var superClass:Object = clazz.superClass_;
> var superdesc:Object =
> Object.getOwnPropertyDescriptor(superClass,
> prop);
>
> while (superdesc == null)
> {
> superClass = superClass.constructor;
> superClass = superClass.superClass_;
> superdesc =
> Object.getOwnPropertyDescriptor(superClass, prop);
> }
> return superdesc.get.call(pthis);
> }
>
>
> The problem is that if the base class has both a getter and a setter and
> the subclass only defines an override of a setter, you can't just
> Object.defineProperty a setter on the subclass. You must also define a
> function for the getter that calls the base class getter. But, the base
> class may not actually have a getter, the getter may actually be defined
> on some class further up the chain of base classes. So,
> Language.superGetter and superSetter try to look up the function to call
> at runtime.
>
> If we are sure we can compute the function to call at compile time, we
> might be able to avoid the runtime lookup.
>
> -Alex
>
> On 4/26/16, 6:04 AM, "Harbs" <[email protected]> wrote:
>
>> What’s the Javascript output in this case?
>>
>> On Apr 25, 2016, at 6:02 PM, Alex Harui <[email protected]> wrote:
>>
>>> Do you have a better way to do it?
>>>
>>> -Alex
>>>
>>> On 4/25/16, 1:46 AM, "lizhi" <[email protected]> wrote:
>>>
>>>> just see
>>>>
>>>> https://github.com/matrix3d/spriteflexjs/blob/master/test/src/SuperTest.
>>>> as
>>>>
>>>> and see the s1.as s2.as s3.as s4.as
>>>>
>>>> thanks.
>>>>
>>>>
>>>>
>>>> --
>>>> View this message in context:
>>>>
>>>> http://apache-flex-development.2333347.n4.nabble.com/superGetter-very-ve
>>>> ry
>>>> -slow-tp52574.html
>>>> Sent from the Apache Flex Development mailing list archive at
>>>> Nabble.com.
>>>
>>
>
