[incubator-kie-drools-5874] [new-parser] Adapt drlIdentifier to opera…

[tkobayas]

…tor_key and neg_operator_key in DRL6Expressions.g4

Issue:

• https://github.com/apache/incubator-kie-drools/issues/5874

Thanks to https://github.com/apache/incubator-kie-drools/commit/d57c5da8b785bca3f35e6a32297bc3ba7a69843b , this is no longer an issue, so I adapted drlIdentifier and enabled the tests.

[tkobayas]

@yurloc @mariofusco @gitgabrio Please review, Thanks!

[tkobayas]

@yurloc Thank you for pointing out that, and sorry for not finding it beforehand. I'll investigate it.

[tkobayas]

I found that adding ? to relationalExpression solves the issue, but I postpone this fix until we will fix some more remaining test failures so that I can see the potential side-effect easily. Also this issue isn't related to any existing tests.

--- a/drools-drl/drools-drl-parser/src/main/antlr4/org/drools/drl/parser/antlr4/DRL6Expressions.g4
+++ b/drools-drl/drools-drl-parser/src/main/antlr4/org/drools/drl/parser/antlr4/DRL6Expressions.g4
@@ -505,7 +505,7 @@ locals [ BaseDescr lsd ]
                $relationalExpression::lsd = $result;
            }
          }
-  )*
+  )*?
   ;

[mariofusco]

@tkobayas Is this work still pending? If so what is missing?

[tkobayas]

@mariofusco Thanks. I'll come back to work on this. This is relatively low priority. and should not block https://github.com/apache/incubator-kie-drools/pull/5989

[tkobayas]

This is not an immediate problem. Closing.