[antlr-interest] How to get rid of useless nodes in AST?
apalala at gmail.com
Fri Nov 16 05:19:41 PST 2012
Sorry, fired early.
subtract : modulo ('-' modulo)* -> ^(SUBTRACT modulo (modulo)* ) ;
( '-' modulo)+ -> ^(SUBTRACT modulo+) // you don't need the
parenthesis or the asterisk
() -> modulo
On Fri, Nov 16, 2012 at 8:47 AM, Juancarlo Añez <apalala at gmail.com> wrote:
> 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:
> 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.
>> Can anyone help me get rid of these intermediate nodes?
>> Jarrod Roberson
>> List: http://www.antlr.org/mailman/listinfo/antlr-interest
> Juancarlo *Añez*
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