Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:40745
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Received-SPF: error (pb1.pair.com: domain chiaraquartet.net from 208.83.222.18 cause and error)
Message-ID: <48E00373.8050407@chiaraquartet.net>
Date: Sun, 28 Sep 2008 17:21:39 -0500
User-Agent: Thunderbird 2.0.0.16 (X11/20080724)
MIME-Version: 1.0
To: Lukas Kahwe Smith <mls@pooteeweet.org>
CC: Guilherme Blanco <guilhermeblanco@gmail.com>, 
 Steph Fox <steph@php.net>,
 Kevin Waterson <kevin@phpro.org>, internals@lists.php.net, 
 Andi Gutmans <andi@php.net>
References: <59.6C.35835.FB3F8D84@pb1.pair.com> <20080924065741.50a30448.kevin@phpro.org> <002701c91dd1$89dad480$3ffc1f3e@foxbox> <bcb7aa500809231617y3305b5bcn18f47630a8124e0d@mail.gmail.com> <CA8D28A3-86A1-477F-B777-93EFC01B71A3@pooteeweet.org>
In-Reply-To: <CA8D28A3-86A1-477F-B777-93EFC01B71A3@pooteeweet.org>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Subject: Re: [PHP-DEV] true namespaces, yet another point of view
From: greg@chiaraquartet.net (Gregory Beaver)

Lukas Kahwe Smith wrote:
> 
> On 24.09.2008, at 01:17, Guilherme Blanco wrote:
> 
>> For those that do not understand very well the explanation of jvlad...
>>
>> He's suggesting to change the class struct to be an scope struct, and
>> have a property that tells if it's a namespace or a class, and reuse
>> the implementation of class which already works very well.
>> The nested support is achieved afai understand through the Adjacency
>> List algorithm... can you confirm this to me?
> 
> 
> or just leave the organization of things to classes (with long class
> names with a nice prefix to prevent collissions) and leave it to
> class_alias() (and equivalent features for functions .. also with the
> option of a compile time aliasing) to handle the aliasing.
> 
> this removes the need for namespaces and use statements, while making it
> possible to make class/function names short (that are long for
> organizational and collision prevention reasons).

Hi,

This approach doesn't work because aliasing with class_alias() does not
allow name conflicts:

<?php
class foo {
function __construct(){echo 'hi',"\n";}}
class_alias('foo', 'XMLReader');
$a = new XMLReader;
?>

results in:

Warning: Cannot redeclare class XMLReader in
/home/cellog/workspace/php5/test.php on line 4

whereas:

<?php
class foo {
function __construct(){echo 'hi',"\n";}}
use ::foo as XMLReader;
$a = new XMLReader;
?>

results in:

hi

Greg