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

[Wolfgang Laun (JIRA)]

Invalid comparison operator (=) causes EmptyStackException in DRLParser/ParserHelper
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                 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: Mark Proctor


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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