Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:11634
Return-Path: <php@hristov.com>
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Delivered-To: mailing list internals@lists.php.net
Received: (qmail 96404 invoked by uid 1010); 29 Jul 2004 22:53:59 -0000
Delivered-To: ezmlm-scan-internals@lists.php.net
Delivered-To: ezmlm-internals@lists.php.net
Received: (qmail 96380 invoked from network); 29 Jul 2004 22:53:58 -0000
Received: from unknown (HELO iko.gotobg.net) (80.168.8.116)
  by pb1.pair.com with SMTP; 29 Jul 2004 22:53:58 -0000
Received: from pd9e61a6e.dip.t-dialin.net ([217.230.26.110] helo=[192.168.0.32])
	by iko.gotobg.net with asmtp (Exim 4.34)
	id 1BqJmm-0004XY-9M
	for internals@lists.php.net; Fri, 30 Jul 2004 01:54:04 +0300
Message-ID: <41099A18.6040004@hristov.com>
Date: Fri, 30 Jul 2004 00:45:12 +0000
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8a2) Gecko/20040627
X-Accept-Language: en-us, en
MIME-Version: 1.0
To:  internals@lists.php.net
References: <20040729021337.73894.qmail@pb1.pair.com> <200407291117.09573.lpedretti@suserver.com> <200407291037.12396.ilia@prohost.org> <41098F91.3000606@hristov.com> <004801c475bd$812f3580$0200a8c0@rusko>
In-Reply-To: <004801c475bd$812f3580$0200a8c0@rusko>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
X-AntiAbuse: This header was added to track abuse, please include it with any abuse report
X-AntiAbuse: Primary Hostname - iko.gotobg.net
X-AntiAbuse: Original Domain - lists.php.net
X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse: Sender Address Domain - hristov.com
X-Source: 
X-Source-Args: 
X-Source-Dir: 
Subject: Re: [PHP-DEV] GOTO operator
From: php@hristov.com (Andrey Hristov)

Paul G wrote:
> ----- Original Message ----- 
> From: "Andrey Hristov" <php@hristov.com>
> To: <ilia@prohost.org>
> Cc: <internals@lists.php.net>
> Sent: Thursday, July 29, 2004 8:00 PM
> Subject: Re: [PHP-DEV] GOTO operator
> 
> 
> --- snip ---
> 
> 
>>Is the average Joe going to write parsers in the everydays work? Probably
> 
> not.
> 
> how about:
> 
> function pseudocode()
> {
>     $a=allocate_resource_z();
>     $b=allocate_resource_y();
> 
>     $res=do_stuff();
>     if(!$res)
>         goto err_out;
> 
>     $c=allocate_resource_x();
>     $res=do_more_stuff();
>     if(!$res)
>         goto err_out;
> 
>     $d=allocate_resource_foo();
>     $res=do_even_more_stuff();
>     if(!$res)
>         goto err_out;
> 
>     return true;
> 
> err_out:
>     free_resouce($a);
>     free_resouce($b);
>     if(isset($c)) free_resouce($c);
>     if(isset($d)) free_resouce($c);
> 
>     return false;
> }

no goto : other implementation

function pseudocode()
{
     $a=allocate_resource_z();
     $b=allocate_resource_y();
     do {
       $res=do_stuff();
       if(!$res) break;

       $c=allocate_resource_x();
       $res=do_more_stuff();
       if(!$res) break;

       $d=allocate_resource_foo();
       $res=do_even_more_stuff();
       if(!$res) break;

       return true;
   } while (0);

    free_resouce($a);
    free_resouce($b);
    if(isset($c)) free_resouce($c);
    if(isset($d)) free_resouce($c);

    return false;
}

andrey