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Reply-To: "l0t3k" <cshmoove@hotmail.com>
References: <49.81.03593.F1463F34@pb1.pair.com> <1355657626.20060215225041@marcus-boerger.de>
Date: Wed, 15 Feb 2006 17:28:15 -0500
Lines: 68
Subject: Re: [PHP-DEV] C Level Iterators and Userland Classes
From: cshmoove@hotmail.com ("l0t3k")


"Marcus Boerger" <helly@php.net> wrote in message 
news:1355657626.20060215225041@marcus-boerger.de...
> Hello l0t3k,
>
>  first of all your question does not make any sense to me whatsoever.
What im trying to allow for is sorting by iterator as well as standard 
arrays, for example :
// assume en_US as default locale

$coll = new Collator("en_US");

$iter = new TextIterator("The rain in Spain drop gently on the Plains", 
TextIterator::WORD);

var_dump( $coll->sort($iter));    // returns the sorted list of words

$expr = new Regex($patttern, $input, $flags);
var_dump($coll->sort($expr, SORT_DESC));    // Sorts matches in descending 
order

> Anyway looking at the code you seem to be using a c-level iterator
> manually instead of using it inside foreach() construct.
see above...

> The first thing i can see is that you use the iterator index while the
> source code (zend_interface.h) says:
>    ulong index; /* private to fe_reset/fe_fetch opcodes */
> Unil now noone tried to emulate this stuff so i am not sure whether this
> is correct or not.
i wrote this more than ayear ago and i remember copying it from engine code.

> The second thing is that you did not use the dtor() handler so you have
> a memory leak.
which dtor handler ?

> To try to answer what i think you want to know: What ever object you use.
> If it implements Traversable or derived its zend_class_entry has a
> get_iterator function that gets you access to an iteator struct and the
> handler table. You should never touch the data member of that iterator
> struct and the handlers are documented. In your case there is no need to
> use handler invalidate_current().

That helps. Thanks a lot....

clayton

> hope this helps
> marcus
>
> Wednesday, February 15, 2006, 6:23:44 PM, you wrote:
>
>> A quick question about using iterators in C code:
>
>> If it sufficient to use the interface gotten from
>> zend_class_entry->get_iterator to handle userland classes  which 
>> implement
>> Iterator ?
>> The attachment is part of code i'm using to do Unicode based collation. 
>> Will
>> this work for userland iterators as well ?
>
>> l0t3k
>
> Best regards,
> Marcus