Special Grammar not supported

The Special Grammar is not supported. If I try the simple example matcher (m = r.sub.Name in (r.obj.Admins)), I get an error:

com.googlecode.aviator.exception.ExpressionSyntaxErrorException: Syntax error: unexpect token 'in', maybe forget to insert ';' to complete last expression  at 13, lineNumber: 1, token : [type='variable',lexeme='in'],
while parsing expression: `
r_sub.Name in^^^
`
	at com.googlecode.aviator.AviatorEvaluatorInstance.innerCompile(AviatorEvaluatorInstance.java:1494)
	at com.googlecode.aviator.AviatorEvaluatorInstance.access$000(AviatorEvaluatorInstance.java:180)
	at com.googlecode.aviator.AviatorEvaluatorInstance$2.call(AviatorEvaluatorInstance.java:1465)
	at com.googlecode.aviator.AviatorEvaluatorInstance$2.call(AviatorEvaluatorInstance.java:1462)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at com.googlecode.aviator.AviatorEvaluatorInstance.compile(AviatorEvaluatorInstance.java:1449)
	at com.googlecode.aviator.AviatorEvaluatorInstance.compile(AviatorEvaluatorInstance.java:1413)
	at com.googlecode.aviator.AviatorEvaluatorInstance.compile(AviatorEvaluatorInstance.java:1400)
	at org.casbin.jcasbin.main.CoreEnforcer.enforce(CoreEnforcer.java:439)
	at org.casbin.jcasbin.main.CoreEnforcer.enforce(CoreEnforcer.java:546)
        ...

The parsing seems to incorrectly see in as variable and not as operator.

[hsluoyz]

@tangyang9464 can we support in in Java? See: https://casbin.org/docs/en/syntax-for-models#expression-evaluator . Java uses: https://github.com/killme2008/aviatorscript as the expression evaluator. And aviatorscript is evolving faster now. We should send issue to their community for in support.

[github-actions[bot]]

🎉 This issue has been resolved in version 1.13.0 🎉

The release is available on:

• GitHub release
• v1.13.0

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