Hello,
On Mon, Dec 29, 2008 at 6:00 AM, David Zülke
<david.zue...@bitextender.com> wrote:
> On 25.12.2008, at 06:11, Lars Strojny wrote:
>
>> Hi David,
>>
>> Am Dienstag, den 23.12.2008, 17:02 +0100 schrieb David Zülke:
>> [...]
>>>
>>> This gives a fatal "Call to undefined method DateTime::getAtom()"
>>> $d = new DateTime();
>>> $d->getAtom = Curry::create(array($d, 'format'), DATE_ATOM);
>>> echo $d->getAtom();
>>
>> This is the same as the following:
>>
>> $obj = new stdClass();
>> $obj->method = function() {
>> return "foo";
>> };
>> $obj->method();
>>
>> The first "method" is a property, the call to "method" is - well - a
>> method call. Because PHP separates methods and properties in the class
>> entry structure - and because we have magic methods like __set, __get
>> and __call, there is no efficient and logical way how to search for
>> properties with closure instances when a method is not found. We
>> discussed that before and decided to let closures go out into the wild
>> and think about adding a solution for prototype alike inheritance later.
>
> I realize that, but I guess it's pretty inconsistent, as I can do
> - $func();
> - $func->__invoke();
> - $obj->func->__invoke();
> but not
> - $obj->func();
>
> That was my point; I'm aware of potential reasons for this behavior (like
> what Stas pointed out). Sorry for the confusion ;)
>
> Is it going to be like this forever? Stas said "there is no way to
> distinguish". Isn't that a parser issue that should be gone now with the
> switch to re2c? Wouldn't it be possible to just do a lookup for a property
> that is an object with __invoke if the method was not found?
Well, this is not a parser problem (so re2c, which actually is the
lexer, won't help).
Additionally: looking for a property when a method is not found would
break code relying on __call() to be called on those cases.
Finally, note that you can do that in userland using something looking like:
public function __call($name, $args) { return
call_user_func_array(array($this->$name, "__invoke"), $args); }
Regards,
>
> - David
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>
>
>
--
Etienne Kneuss
http://www.colder.ch
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when they do it from a religious conviction.
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