[antlr-interest] getting data from a grammar

Brian Nelson brian at neuesoftware.com
Mon May 4 12:48:37 PDT 2009


This was a small example of a much larger problem. This isn't this 
simple case only, I am processing CSS files and trying to object-ize the 
entire file (rules, declarations, media blocks, etc)

On 5/4/09 12:21 PM, Micha wrote:
> On Monday 04 May 2009 21:08:50 Brian Nelson wrote:
>    
>> The input would be "aa, bb, cc" and I simply want a list of
>> ['aa','bb','cc']. I am not trying to process it, just get the list out
>> of it, ignoring the commas, in a variable I can use.
>>
>>      prog : rone (COMMA rone)*
>>             ;
>>
>>      rone : IDENT;
>>
>>      IDENT: 'a'..'z' ('a'..'z')*;
>>      COMMA: ',';
>>
>>      
>
> for this I would do (in java):
> String idents[] = text.split(",");
>
> then, if needed:
> for (String s: idents) {
> 	if (!s.matches("[a..z]([a..z])*")) throw new Argh();
> }
>
>
>
> cheers
>   Michael
>
>    

-- 
Brian Nelson
Software Engineer, Neue Software

e. brian at neuesoftware.com
c. +1 408 373 8310

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