[jboss-jira] [JBoss JIRA] Updated: (JBRULES-3002) Invalid comparison operator (=) causes EmptyStackException in DRLParser/ParserHelper

[Mark Proctor (JIRA)]

     [ https://issues.jboss.org/browse/JBRULES-3002?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mark Proctor updated JBRULES-3002:
----------------------------------

    Assignee: Edson Tirelli  (was: Mark Proctor)


> Invalid comparison operator (=) causes EmptyStackException in DRLParser/ParserHelper
> ------------------------------------------------------------------------------------
>
>                 Key: JBRULES-3002
>                 URL: https://issues.jboss.org/browse/JBRULES-3002
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: drools-compiler (expert)
>    Affects Versions: 5.2.0.M2
>            Reporter: Wolfgang Laun
>            Assignee: Edson Tirelli
>
> class Customer {
>     int custid; //...
> }
> rule x
> when
>     $c: Customer( custid = 100 ) // Typo, wanted: "=="
> then end
> [0,0]: Line 47:0 unexpected exception at input 'rule'. Exception: java.util.EmptyStackException. Stack trace:
>  java.util.EmptyStackException
> 	at java.util.Stack.peek(Stack.java:102)
> 	at java.util.Stack.pop(Stack.java:84)
> 	at org.drools.lang.ParserHelper.popParaphrases(ParserHelper.java:409)
> 	at org.drools.lang.ParserHelper.end(ParserHelper.java:723)
> 	at org.drools.lang.DRLParser.rule(DRLParser.java:915)
> 	at org.drools.lang.DRLParser.statement(DRLParser.java:248)
> 	at org.drools.lang.DRLParser.compilationUnit(DRLParser.java:143)
> 	at org.drools.compiler.DrlParser.compile(DrlParser.java:225)
> 	at org.drools.compiler.DrlParser.parse(DrlParser.java:136)
> 	at org.drools.compiler.DrlParser.parse(DrlParser.java:141)
> 	at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:292)
> 	at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:471)
> 	at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)

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