[antlr-interest] How to rewrite rule with optional terms?

[fridi70 at gmx.de]

Hi,

if have a grammar like this:

op: queryOp ('>' INT)?;

INT: DIGIT+;

fragment
DIGIT: '0'..'9';


I want to rewrite the rule op in a manner that it adds '>' and '0' as children to the root if '>0' is missing.

How can I achieve this? Thanks in advance, fridi

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