[antlrinterest] How to get rid of useless nodes in AST?
Juancarlo Añez
apalala at gmail.com
Fri Nov 16 05:19:41 PST 2012
Sorry, fired early.
subtract : modulo ('' modulo)* > ^(SUBTRACT modulo (modulo)* ) ;
subtract
:
modulo
( modul
( '' modulo)+ > ^(SUBTRACT modulo+) // you don't need the
parenthesis or the asterisk

() > modulo
)
;
Cheeers,
 JA
On Fri, Nov 16, 2012 at 8:47 AM, Juancarlo Añez <apalala at gmail.com> wrote:
> Jarrod,
>
> Jim is right, but he doesn't make much of an explanation:
>
> subtract : modulo ('' modulo)* > ^(SUBTRACT modulo (modulo)* ) ;
>
>
> To get rid of the unneeded tokens you can write something like:
>
> subtract
> :
>
>
>
>
> On Thu, Nov 15, 2012 at 11:56 PM, Jarrod Roberson <jarrod at vertigrated.com>wrote:
>
>> I asked this question on stackoverflow.com, it has many details and
>> graphics depicting what I am trying to do.
>>
>>
>> http://stackoverflow.com/questions/13409927/howtogetridofuselessnodesfromthisasttree
>>
>> Can anyone help me get rid of these intermediate nodes?
>>
>> 
>> Jarrod Roberson
>>
>> List: http://www.antlr.org/mailman/listinfo/antlrinterest
>> Unsubscribe:
>> http://www.antlr.org/mailman/options/antlrinterest/youremailaddress
>>
>
>
>
> 
> Juancarlo *Añez*
>

Juancarlo *Añez*
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