Re: [ZEND-ENGINE-CVS] cvs: ZendEngine2 / zend_closures.c zend_closures.h zend_object_handlers.c /tests closure_033.phpt closure_034.phpt

Hello Dmitry,

  no I mean what the general technology, referred to as prototyping
requires. What in general someone expects when binding a function
to an object. Whether that is what JS does I couldn't count less.
Though on the other hand it is the only prototype language that I
use. Oh and continuing that thought, once again doing something in
a way they know already is a pretty cool trick.

marcus

Sunday, January 11, 2009, 2:48:29 PM, you wrote:

> Do you mean JavaScript like tricks which allow to create new methods by
> assigning closures to object properties?

> As I remember, it was decided not to support it.

> Thanks. Dmitry.

> Marcus Boerger wrote:
>> Hello Dmitry,
>> 
>>   it's what prototyping requires. I just made this behave as expected.
>> 
>> marcus
>> 
>> Sunday, January 11, 2009, 9:09:14 AM, you wrote:
>> 
>>> Hi Marcus,
>> 
>>> I'm wondered where this behavior comes from (It was never proposed or
>>> may be I missed it).
>> 
>>> Now, the simple assignment of closure to property and back changes its
>>> internal $this pointer.
>> 
>>> As result the following example is broken.
>> 
>>> <?php
>>> class A {
>>>         private $a = 0;
>>>         public $bar;
>>>         function foo() {
>>>                 return function() {
>>>                         return $this->a++;
>>>                 };
>>>         }
>>> }
>>> class B {
>>>         public $bar;
>>>         function foo($a) {
>>>                 return $a->foo();
>>>         }
>>> }
>>> $a = new A;
>>> $b = new B;
>>> $f1 = $a->foo();
>>> $f2 = $b->foo($a);
>>> var_dump($f1());
>>> var_dump($f1());
>>> var_dump($f2());
>>> var_dump($f2());
>>> var_dump($f1());
>>> $a->bar = $f1;
>>> $b->bar = $f2;
>>> $f1 = $a->bar;
>>> $f2 = $b->bar;   // REASON OF THE BUG
>>> var_dump($f1());
>>> var_dump($f1());
>>> var_dump($f2()); // BUG
>>> var_dump($f2());
>>> var_dump($f1());
>> ?>>
>> 
>>> Thanks. Dmitry.
>> 
>> 
>>> Marcus Boerger wrote:
>>>> helly         Sat Jan  3 17:46:25 2009 UTC
>>>>
>>>>   Added files:                 
>>>>     /ZendEngine2/tests        closure_033.phpt closure_034.phpt 
>>>>
>>>>   Modified files:              
>>>>     /ZendEngine2      zend_closures.c zend_closures.h zend_object_handlers.c 
>>>>   Log:
>>>>   - Rebind closure when binding to property
>>>>   
>>>>
>> 
>> 
>> 
>> 
>> Best regards,
>>  Marcus
>> 




Best regards,
 Marcus