On Mon, Mar 11, 2013 at 10:27 PM, Nikita Popov <nikita....@gmail.com> wrote:
> On Mon, Mar 11, 2013 at 9:50 AM, Dmitry Stogov <dmi...@zend.com> wrote:
>
>> Hi Nikita,
>>
>> The patch looks good. I have just few comments
>>
>> - In ZEND_FE_FETCH handler PLAIN_OBJECT may have only STRING keys. I
>> didn't get why you added unreachable code for INT and NULL.
>>
>
> You are right about the NULL case, that can indeed not occur. But INT is
> possible, e.g. consider this:
>
> <?php
> foreach ((object) ['x','y','z'] as $k => $v) {
> var_dump($k);
> }
>
> this will give you keys int(0), int(1), int(2).
>
Agree. I missed it.
> I'll remove the check for NULL.
>
>
> - At first, I fought, that it might be a good idea to change
>> zend_user_it_get_current_key() to return SUCCESS/FAILURE instead of
>> returning IS_NULL that has a special meaning. But after looking into the
>> FE_FETCH code before the commit I understood where this NULL came from. I
>> know that NULL key may not appear for plain array and objects but I'm not
>> sure about iterators and generators. Now IS_NULL keys may mean that
>> iterator returned it directly IS_NULL or may be it was returned because of
>> some error conditions. Probably it's not a problem. What do you think?
>>
>
> In foreach IS_NULL can't occur in an error condition, because the loop is
> already aborted when get_current_data provides NULL. IS_NULL can only
> happen when its explicitly provided (or handlers are incorrectly coded). I
> think the IS_NULL fallback is mainly important when the iterator is used
> for other things (like a dual it), to be sure that it'll always work. I
> don't think that it's important to distinguish between explicit NULL and
> failure NULL.
>
Agree as well.
> I have one more question: Right now I added the
> zend_hash_get_current_key_zval API in zend_hash.c/h, which is a bit ugly
> because it has a zval dependency (unlike all the other code in there) and
> requires me to forward-declare the zval struct. Would it be better to move
> this somewhere else, e.g. zend_API.c/h? If so, can I still keep the same
> name (with the zend_hash_ prefix)? If I move it to zend_API, I won't be
> able to do the IS_CONSISTENT check anymore, is that a problem?
>
I think we can move zval forward declaration (typedef struct _zval_struct
zval;) from zend.h into zend_type.h.
Thanks. Dmitry.
