Re: [Grammatica-users] Empty file parsing

[Per Cederberg]

I assume that the comment tokens are marked with %ignore%.
In that case it is not possible to do it with Grammatica,
as all productions must match at least 1 token.

You could do some kind of work-around, though, by ignoring
parse errors on some occations. Perhaps the easiest way
would be to subclass the Tokenizer to set a flag if it
returns a token. In case of parse error, you can then check
the flag to see if the cause was lack of input. Care must
be taken to handle tokenizer exceptions properly though.

I know this isn't an ideal solution. So I've registered a
feature request on the issue:

https://savannah.nongnu.org/bugs/index.php?func=detailitem&item_id=16783

Cheers,

/Per

Leszek Doniec wrote:
> Hello,
>  
> is there any possibility to parse a file that includes only comments? 
> I use grammatica 1.4.
>  
> Thanks for help,
> Leszek Doniec
>
>
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