[asterisk-users] AEL and swap from macros to contexts

[Pavel Jezek]

Atis Lezdins wrote:
> On Tue, Oct 7, 2008 at 8:45 AM, Pavel Jezek <pavel.jezek at i.cz> wrote:
>   
>> Steve Murphy wrote:
>>     
>>> On Mon, 2008-10-06 at 18:25 +0200, Pavel Jezek wrote:
>>>
>>>       
>>>> Atis Lezdins wrote:
>>>>
>>>>         
>>>>> On Mon, Oct 6, 2008 at 5:21 PM, Pavel Jezek <pavel.jezek at i.cz> wrote:
>>>>>
>>>>>
>>>>>           
>>>>>> Hi, according to discussion on asterisk IRC, where people said, that
>>>>>> macros will be depracated, I tried to migrate from macros to contexts
>>>>>> and Gosub
>>>>>> but if I try to use gosub in extensions.ael, ael compiler complains,
>>>>>> that I shouln't use Gosub app,
>>>>>> but I can't find ael keyword, that will be Gosub equivalent, or can I
>>>>>> ignore this ael warnings? thanks
>>>>>> PJ
>>>>>>
>>>>>>
>>>>>> LOG: lev:3 file:pval.c  line:2521 func: check_pval_item  Warning: file
>>>>>> /etc/asterisk/extensions.ael, line 36-36: application call to Gosub
>>>>>> affects flow of control, and needs to be re-written using AEL if, while,
>>>>>> goto, etc. keywords instead!
>>>>>>
>>>>>>
>>>>>>             
>>>>> Hi,
>>>>>
>>>>> In definition use:
>>>>>
>>>>> macro set_record(A,B) {
>>>>>   // do something
>>>>> }
>>>>>
>>>>> And for calling:
>>>>>
>>>>> &set_record(${CALLERID(NUM)},${EXTEN});
>>>>>
>>>>> It will automatically be translated to GoSub in 1.6, but will remain
>>>>> as Macro in 1.4.
>>>>>
>>>>>
>>>>>           
>>>> yes, I know, but I hear on IRC, that macros will be deprecated and
>>>> suggestion was to move to contexts,
>>>> personaly I would like also move away from macros, because macros have
>>>> some limitations, eg. variable number of arguments isn't possible with
>>>> classic macros,
>>>> macros also require variable to be defined in macro definition (that is
>>>> needless, because I'm referecing to ARG1, ARG2 etc. inside macros)
>>>> so I definitively agree with moving from macros to contexts, only one
>>>> bad thing is compiler warning, when I try to Gosub to context (as macro
>>>> replacement)
>>>> PJ
>>>>
>>>>
>>>>
>>>>         
>>> Pavel--
>>>
>>> Yes, you can ignore the warnings and go ahead and hardcoded gosub calls
>>> into your source. I didn't upgrade 1.4 to use gosub-instead-of-macro
>>> because
>>> the key element ended up being "calling gosub with arguments", which
>>> didn't
>>> make it into 1.4.
>>>
>>> Someday, when you upgrade from 1.4 to 1.6, you will have to change
>>> all your gosub's to use the argument passing feature, if you hardcode
>>> gosubs now. Or, you can backport the gosub-with-arguments feature to
>>> 1.4,
>>> and use 1.6 AEL to compile... which will give you some future
>>> portability
>>> when you do move to 1.6...
>>>
>>> Sorry to make simple things sound so complicated!
>>>
>>> murf
>>>
>>>
>>>       
>> murf, thank you for clear answer,
>> currently, I'm using asterisk trunk (and 1.6 also),
>> do you plan to remove quite confusing AEL warnings, that appears, when I
>> try to hardcode Gosub with arguments into ael dialplan?
>>     
>
> Why would you still want to hardcode them?
>   
because I would like to move completely away from using classic macros, 
because it have some limitations, as I said, variable number of 
arguments passed to macro is example,
so I moving from macros to contexts that do the same functionality and 
haven't limitations that macros have
and if I will have only contexts in ael dialplan I must call it with 
Gosub (I can't call context using &)
PJ

> Please see above sample, you can use prefixing with "and"  (&).
>   

> Regards,
> Atis.
>
>   
>> PJ
>>
>>
>>     
>>>>> Regards,
>>>>> Atis
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>           
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