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Date: Wed, 17 May 2006 00:21:35 +0200
Reply-To: Marcus Boerger <helly@php.net>
Message-ID: <1677590447.20060517002135@marcus-boerger.de>
To: Jason Garber <jason@ionzoft.com>
Cc: internals@lists.php.net
In-Reply-To: <1014418169.20060516181322@ionzoft.com>
References: <785810036.20060511193536@ionzoft.com> <44647B7A.2070301@php.net> <932738738.20060513112734@marcus-boerger.de> <837405862.20060513223403@ionzoft.com> <36828701.20060514110529@marcus-boerger.de> <31269879.20060514221212@marcus-boerger.de> <1327845846.20060514222154@marcus-boerger.de> <1562034641.20060516203354@marcus-boerger.de> <7.0.1.0.2.20060516235201.090f10a8@zend.com> <7.0.1.0.2.20060516142654.02c78380@zend.com> <596643859.20060516233753@marcus-boerger.de> <7.0.1.0.2.20060516144030.039abe98@zend.com> <1531743211.20060516234945@marcus-boerger.de> <1014418169.20060516181322@ionzoft.com>
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Subject: Re: [PHP-DEV] private, protected, readonly, public
From: helly@php.net (Marcus Boerger)

Hello Jason,

  i changed from readonly to readable, which means the new keyword makes it
public for any read access, that is:

   private readable $abc;
   - class itself can read and write
   - public for everybody when reading, inside & outside of the class

   protected readable $abc;
   - class itself can read and write
   - sub-class can read and write
   - public for everybody when reading, inside & outside of the class

   public readable $abc;
   - just as public alone

best regards
marcus

Wednesday, May 17, 2006, 12:13:22 AM, you wrote:

> Hello Marcus,

>   Is this correct?

>   
>   private readable $abc;
>   - doesn't make sense.
>   
>   protected readable $abc;
>   - sub-class can read, not write
>   - not visible outside class

>   public readable $abc;
>   - sub-class can read, and write
>   - outside class can read, not write


>   If not, please clarify.
>   Thanks!

> -- 
> Best regards,
>  Jason                            mailto:jason@ionzoft.com

> Tuesday, May 16, 2006, 5:49:45 PM, you wrote:

MB>> Hello Andi,

MB>>   nothing else needs to be fixed. The patch considers a reference as a write
MB>> operation as well as anything else that doesn't identify itself as a read
MB>> operation. And the enforcement itself just means that whatever you define
MB>> besides readable is being ignored for read operations.

MB>> best regards
MB>> marcus

MB>> Tuesday, May 16, 2006, 11:41:31 PM, you wrote:

>>> Where would readable be enforced? Would it try and prevent getting 
>>> references to it? Are there any internal functions/classes which need 
>>> fixing to honor readable?

>>> I think these answers would really be helpful.

>>> Thanks.

>>> Andi

>>> At 02:37 PM 5/16/2006, Marcus Boerger wrote:
>>>>Hello Andi,
>>>>
>>>>   that is why most here already switched to "public readable".
>>>>
>>>>best regards
>>>>marcus
>>>>
>>>>Tuesday, May 16, 2006, 11:31:14 PM, you wrote:
>>>>
>>>> > I can't quite explain it but for me the ability to work-around
>>>> > private with methods which are able to access the private variable,
>>>> > is different than marking a property as read-only but it not being
>>>> > read-only in all semantics. Probably because private variables do
>>>> > often have getters and setters, whereas something which is marked as
>>>> > read-only (like a harddrive) tends to be read-only always.
>>>>
>>>> > Andi
>>>>
>>>> > At 02:08 PM 5/16/2006, Zeev Suraski wrote:
>>>> >>>However, the reason i write this mail is that you said there could be
>>>> >>>problems. Well this is deply integrated  in the handlers and they don't
>>>> >>>let you out. In other words if this stuff is not working then the whole
>>>> >>>PHP 5+ object model is broken. Or in other words, if this is broken alot
>>>> >>>of other stuff regarding object handling is already broken.
>>>> >>
>>>> >>You're probably right about this one.  You can already return a
>>>> >>reference to a private variable today and change it.  Andi - did you
>>>> >>mean something else?
>>>>
>>>>
>>>>
>>>>
>>>>Best regards,
>>>>  Marcus




MB>> Best regards,
MB>>  Marcus




Best regards,
 Marcus