* Testing non-existent counter in Lua
@ 2010-06-21 21:41 Jaroslav Hajtmar
2010-06-22 5:55 ` Taco Hoekwater
0 siblings, 1 reply; 4+ messages in thread
From: Jaroslav Hajtmar @ 2010-06-21 21:41 UTC (permalink / raw)
To: mailing list for ConTeXt users
Hi, all.
How do I know (due Lua) that the counter has not been defined in ConTeXt
(through the command newcount)?
I am trying testing :
if tex.count.mycount == nil then...
or
if tex.count.mycount == 'error' then...
then when counter isnt defined due \newcount\mycount, then test ending
with error message.
When counter is defined due
\newcount\mycount,
\mycount=1
then test
if tex.count.mycount == 1 then...
is OK...
Thanx, Jaroslav
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Testing non-existent counter in Lua
2010-06-21 21:41 Testing non-existent counter in Lua Jaroslav Hajtmar
@ 2010-06-22 5:55 ` Taco Hoekwater
2010-06-22 6:35 ` Jaroslav Hajtmar
0 siblings, 1 reply; 4+ messages in thread
From: Taco Hoekwater @ 2010-06-22 5:55 UTC (permalink / raw)
To: hajtmar, mailing list for ConTeXt users
Jaroslav Hajtmar wrote:
> Hi, all.
>
> How do I know (due Lua) that the counter has not been defined in ConTeXt
> (through the command newcount)?
>
> I am trying testing :
>
> if tex.count.mycount == nil then...
>
> or
>
> if tex.count.mycount == 'error' then...
>
> then when counter isnt defined due \newcount\mycount, then test ending
> with error message.
>
> When counter is defined due
> \newcount\mycount,
> \mycount=1
>
> then test
> if tex.count.mycount == 1 then...
if token.command_name(token.create('mycount')) == 'assign_int'
and tex.count.mycount == 1 then
...
end
Best wishes,
Taco
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Testing non-existent counter in Lua
2010-06-22 5:55 ` Taco Hoekwater
@ 2010-06-22 6:35 ` Jaroslav Hajtmar
2010-06-22 8:39 ` Taco Hoekwater
0 siblings, 1 reply; 4+ messages in thread
From: Jaroslav Hajtmar @ 2010-06-22 6:35 UTC (permalink / raw)
To: Taco Hoekwater; +Cc: mailing list for ConTeXt users
Thanx Taco,
can I learn about these things somewhere read more? I tried
luatexref-t.pdf and I didnt in fact guided.
Thanx Jaroslav
Dne 22.6.2010 7:55, Taco Hoekwater napsal(a):
> Jaroslav Hajtmar wrote:
>> Hi, all.
>>
>> How do I know (due Lua) that the counter has not been defined in
>> ConTeXt (through the command newcount)?
>>
>> I am trying testing :
>>
>> if tex.count.mycount == nil then...
>>
>> or
>>
>> if tex.count.mycount == 'error' then...
>>
>> then when counter isnt defined due \newcount\mycount, then test
>> ending with error message.
>>
>> When counter is defined due
>> \newcount\mycount,
>> \mycount=1
>>
>> then test
>> if tex.count.mycount == 1 then...
>
> if token.command_name(token.create('mycount')) == 'assign_int'
> and tex.count.mycount == 1 then
> ...
> end
>
> Best wishes,
> Taco
>
>
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Testing non-existent counter in Lua
2010-06-22 6:35 ` Jaroslav Hajtmar
@ 2010-06-22 8:39 ` Taco Hoekwater
0 siblings, 0 replies; 4+ messages in thread
From: Taco Hoekwater @ 2010-06-22 8:39 UTC (permalink / raw)
To: hajtmar; +Cc: mailing list for ConTeXt users
Jaroslav Hajtmar wrote:
> Thanx Taco,
> can I learn about these things somewhere read more? I tried
> luatexref-t.pdf and I didnt in fact guided.
It is in there, but as it goes in reference manuals, you have
to know what to look for. At this moment, there are no tutorials
or something like that about the token interface (mostly because
I am not quite happy with how it works right now).
Best wishes,
Taco
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 4+ messages in thread
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2010-06-21 21:41 Testing non-existent counter in Lua Jaroslav Hajtmar
2010-06-22 5:55 ` Taco Hoekwater
2010-06-22 6:35 ` Jaroslav Hajtmar
2010-06-22 8:39 ` Taco Hoekwater
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