[new-parser] Broken OOPath expressions

[yurloc]

Parent issue

• Experiment: New DRL parser #5678

Failing tests

• org.drools.model.codegen.execmodel.QueryTest#testQueryWithOOPath
• org.drools.model.codegen.execmodel.OOPathTest

Notes

• Both STANDARD_FROM_DRL and PATTERN_DSL.

Rule code snippet

query listSafeCities
$cities : List() from accumulate (Person ( $city: /address#InternationalAddress[state == "Safecountry"]/city), collectList($city))
end

Error output

### parse : ANTLR4_PARSER_ENABLED = true
line 2:50 no viable alternative at input '(Person ( $city: /'
line 2:50 no viable alternative at input '$city: /'
line 2:50 extraneous input '/' expecting {'unit', 'function', 'global', 'declare', 'rule', 'query', 'when', 'then', 'end', 'and', 'or', 'exists', 'not', 'in', 'from', 'matches', 'memberOf', 'accumulate', 'acc', 'init', 'action', 'reverse', 'result', 'entry-point', 'eval', 'salience', 'enabled', 'no-loop', 'auto-focus', 'lock-on-active', 'refract', 'direct', 'agenda-group', 'activation-group', 'ruleflow-group', 'date-effective', 'date-expires', 'dialect', 'calendars', 'timer', 'duration', 'module', 'open', 'requires', 'exports', 'opens', 'to', 'uses', 'provides', 'with', 'transitive', 'var', 'yield', 'record', 'sealed', 'permits', '(', '?', IDENTIFIER}
line 2:58 mismatched input '#' expecting {'(', '.'}
line 2:129 extraneous input ')' expecting {'unit', 'function', 'global', 'declare', 'rule', 'query', 'when', 'then', 'end', 'and', 'or', 'exists', 'not', 'in', 'from', 'matches', 'memberOf', 'accumulate', 'acc', 'init', 'action', 'reverse', 'result', 'entry-point', 'eval', 'forall', 'salience', 'enabled', 'no-loop', 'auto-focus', 'lock-on-active', 'refract', 'direct', 'agenda-group', 'activation-group', 'ruleflow-group', 'date-effective', 'date-expires', 'dialect', 'calendars', 'timer', 'duration', 'module', 'open', 'requires', 'exports', 'opens', 'to', 'uses', 'provides', 'with', 'transitive', 'var', 'yield', 'record', 'sealed', 'permits', '(', '?', IDENTIFIER}
21:45:06.913 [main] ERROR o.d.d.parser.antlr4.DRLParserWrapper.parse:77 - Exception while creating PackageDescr
java.lang.IllegalStateException: ctx.lhsPattern().size() == 0 : 
	at org.drools.drl.parser.antlr4.DRLVisitorImpl.visitLhsPatternBind(DRLVisitorImpl.java:441)
	at org.drools.drl.parser.antlr4.DRLVisitorImpl.visitLhsPatternBind(DRLVisitorImpl.java:74)
	at org.drools.drl.parser.antlr4.DRLParser$LhsPatternBindContext.accept(DRLParser.java:1961)
	at org.drools.drl.parser.antlr4.DRLVisitorImpl.visitDescrChildren(DRLVisitorImpl.java:795)
	at org.drools.drl.parser.antlr4.DRLVisitorImpl.visitLhsUnary(DRLVisitorImpl.java:775)
	at org.drools.drl.parser.antlr4.DRLVisitorImpl.visitLhsUnary(DRLVisitorImpl.java:74)
	at org.drools.drl.parser.antlr4.DRLParser$LhsUnaryContext.accept(DRLParser.java:1862)
	at org.drools.drl.parser.antlr4.DRLVisitorImpl.visitDescrChildren(DRLVisitorImpl.java:795)
	at org.drools.drl.parser.antlr4.DRLVisitorImpl.lambda$visitQuerydef$4(DRLVisitorImpl.java:307)
	at java.base/java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:273)
	at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
	at org.drools.drl.parser.antlr4.DRLVisitorImpl.visitQuerydef(DRLVisitorImpl.java:308)
	at org.drools.drl.parser.antlr4.DRLVisitorImpl.visitQuerydef(DRLVisitorImpl.java:74)
	at org.drools.drl.parser.antlr4.DRLParser$QuerydefContext.accept(DRLParser.java:1321)
	at org.antlr.v4.runtime.tree.AbstractParseTreeVisitor.visitChildren(AbstractParseTreeVisitor.java:46)
	at org.drools.drl.parser.antlr4.DRLParserBaseVisitor.visitDrlStatementdef(DRLParserBaseVisitor.java:27)
	at org.drools.drl.parser.antlr4.DRLParser$DrlStatementdefContext.accept(DRLParser.java:405)
	at org.drools.drl.parser.antlr4.DRLVisitorImpl.visitDescrChildren(DRLVisitorImpl.java:795)
	at org.drools.drl.parser.antlr4.DRLVisitorImpl.visitCompilationUnit(DRLVisitorImpl.java:91)
	at org.drools.drl.parser.antlr4.DRLVisitorImpl.visitCompilationUnit(DRLVisitorImpl.java:74)
	at org.drools.drl.parser.antlr4.DRLParser$CompilationUnitContext.accept(DRLParser.java:318)
	at org.antlr.v4.runtime.tree.AbstractParseTreeVisitor.visit(AbstractParseTreeVisitor.java:18)
	at org.drools.drl.parser.antlr4.DRLParserHelper.compilationUnitContext2PackageDescr(DRLParserHelper.java:87)
	at org.drools.drl.parser.antlr4.DRLParserWrapper.parse(DRLParserWrapper.java:75)
	at org.drools.drl.parser.antlr4.DRLParserWrapper.parse(DRLParserWrapper.java:55)
	at org.drools.drl.parser.DrlParser.lambda$parse$2(DrlParser.java:189)
	at org.drools.drl.parser.DrlParser.compileWithAntlr4Parser(DrlParser.java:202)
	at org.drools.drl.parser.DrlParser.parse(DrlParser.java:189)
	at org.drools.drl.parser.DrlParser.parse(DrlParser.java:177)
	at org.drools.drl.parser.DrlParser.parse(DrlParser.java:166)
	at org.drools.compiler.builder.impl.resources.DrlResourceHandler.process(DrlResourceHandler.java:55)
	at org.drools.compiler.builder.impl.PackageDescrBuilder.buildResource(PackageDescrBuilder.java:73)
	at org.drools.compiler.builder.impl.PackageDescrBuilder.build(PackageDescrBuilder.java:51)
	at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildPackageDescr(CompositeKnowledgeBuilderImpl.java:173)
	at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:116)
	at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:109)
	at org.drools.compiler.kie.builder.impl.AbstractKieProject.buildKnowledgePackages(AbstractKieProject.java:274)
	at org.drools.compiler.kie.builder.impl.AbstractKieProject.buildKnowledgePackages(AbstractKieProject.java:220)
	at org.drools.compiler.kie.builder.impl.AbstractKieProject.verify(AbstractKieProject.java:84)
	at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildKieProject(KieBuilderImpl.java:285)
	at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildAll(KieBuilderImpl.java:251)
	at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildAll(KieBuilderImpl.java:208)
	at org.drools.model.codegen.execmodel.BaseModelTest.createKieBuilder(BaseModelTest.java:151)
	at org.drools.model.codegen.execmodel.BaseModelTest.createKieBuilder(BaseModelTest.java:132)
	at org.drools.model.codegen.execmodel.BaseModelTest.getKieContainer(BaseModelTest.java:121)
	at org.drools.model.codegen.execmodel.BaseModelTest.getKieContainer(BaseModelTest.java:114)
	at org.drools.model.codegen.execmodel.BaseModelTest.getKieSession(BaseModelTest.java:110)
	at org.drools.model.codegen.execmodel.BaseModelTest.getKieSession(BaseModelTest.java:106)
	at org.drools.model.codegen.execmodel.QueryTest.testQueryWithOOPath(QueryTest.java:300)
21:45:06.913 [main] ERROR o.d.c.k.b.impl.AbstractKieProject.buildKnowledgePackages:280 - Unable to build KieBaseModel:defaultKieBase
[2,50]: no viable alternative at input '(Person ( $city: /'
[2,50]: no viable alternative at input '$city: /'
[2,50]: extraneous input '/' expecting {'unit', 'function', 'global', 'declare', 'rule', 'query', 'when', 'then', 'end', 'and', 'or', 'exists', 'not', 'in', 'from', 'matches', 'memberOf', 'accumulate', 'acc', 'init', 'action', 'reverse', 'result', 'entry-point', 'eval', 'salience', 'enabled', 'no-loop', 'auto-focus', 'lock-on-active', 'refract', 'direct', 'agenda-group', 'activation-group', 'ruleflow-group', 'date-effective', 'date-expires', 'dialect', 'calendars', 'timer', 'duration', 'module', 'open', 'requires', 'exports', 'opens', 'to', 'uses', 'provides', 'with', 'transitive', 'var', 'yield', 'record', 'sealed', 'permits', '(', '?', IDENTIFIER}
[2,58]: mismatched input '#' expecting {'(', '.'}
[2,129]: extraneous input ')' expecting {'unit', 'function', 'global', 'declare', 'rule', 'query', 'when', 'then', 'end', 'and', 'or', 'exists', 'not', 'in', 'from', 'matches', 'memberOf', 'accumulate', 'acc', 'init', 'action', 'reverse', 'result', 'entry-point', 'eval', 'forall', 'salience', 'enabled', 'no-loop', 'auto-focus', 'lock-on-active', 'refract', 'direct', 'agenda-group', 'activation-group', 'ruleflow-group', 'date-effective', 'date-expires', 'dialect', 'calendars', 'timer', 'duration', 'module', 'open', 'requires', 'exports', 'opens', 'to', 'uses', 'provides', 'with', 'transitive', 'var', 'yield', 'record', 'sealed', 'permits', '(', '?', IDENTIFIER}
[0,0]: 
[0,0]: Parser returned a null Package


java.lang.AssertionError: [Message [id=1, kieBase=defaultKieBase, level=ERROR, path=r0.drl, line=2, column=0
   text=no viable alternative at input '(Person ( $city: /'], Message [id=2, kieBase=defaultKieBase, level=ERROR, path=r0.drl, line=2, column=0
   text=no viable alternative at input '$city: /'], Message [id=3, kieBase=defaultKieBase, level=ERROR, path=r0.drl, line=2, column=0
   text=extraneous input '/' expecting {'unit', 'function', 'global', 'declare', 'rule', 'query', 'when', 'then', 'end', 'and', 'or', 'exists', 'not', 'in', 'from', 'matches', 'memberOf', 'accumulate', 'acc', 'init', 'action', 'reverse', 'result', 'entry-point', 'eval', 'salience', 'enabled', 'no-loop', 'auto-focus', 'lock-on-active', 'refract', 'direct', 'agenda-group', 'activation-group', 'ruleflow-group', 'date-effective', 'date-expires', 'dialect', 'calendars', 'timer', 'duration', 'module', 'open', 'requires', 'exports', 'opens', 'to', 'uses', 'provides', 'with', 'transitive', 'var', 'yield', 'record', 'sealed', 'permits', '(', '?', IDENTIFIER}], Message [id=4, kieBase=defaultKieBase, level=ERROR, path=r0.drl, line=2, column=0
   text=mismatched input '#' expecting {'(', '.'}], Message [id=5, kieBase=defaultKieBase, level=ERROR, path=r0.drl, line=2, column=0
   text=extraneous input ')' expecting {'unit', 'function', 'global', 'declare', 'rule', 'query', 'when', 'then', 'end', 'and', 'or', 'exists', 'not', 'in', 'from', 'matches', 'memberOf', 'accumulate', 'acc', 'init', 'action', 'reverse', 'result', 'entry-point', 'eval', 'forall', 'salience', 'enabled', 'no-loop', 'auto-focus', 'lock-on-active', 'refract', 'direct', 'agenda-group', 'activation-group', 'ruleflow-group', 'date-effective', 'date-expires', 'dialect', 'calendars', 'timer', 'duration', 'module', 'open', 'requires', 'exports', 'opens', 'to', 'uses', 'provides', 'with', 'transitive', 'var', 'yield', 'record', 'sealed', 'permits', '(', '?', IDENTIFIER}], Message [id=6, kieBase=defaultKieBase, level=ERROR, path=r0.drl, line=0, column=0
   text=], Message [id=7, kieBase=defaultKieBase, level=ERROR, path=r0.drl, line=0, column=0
   text=Parser returned a null Package]]

	at org.drools.model.codegen.execmodel.BaseModelTest.createKieBuilder(BaseModelTest.java:157)
	at org.drools.model.codegen.execmodel.BaseModelTest.createKieBuilder(BaseModelTest.java:132)
	at org.drools.model.codegen.execmodel.BaseModelTest.getKieContainer(BaseModelTest.java:121)
	at org.drools.model.codegen.execmodel.BaseModelTest.getKieContainer(BaseModelTest.java:114)
	at org.drools.model.codegen.execmodel.BaseModelTest.getKieSession(BaseModelTest.java:110)
	at org.drools.model.codegen.execmodel.BaseModelTest.getKieSession(BaseModelTest.java:106)
	at org.drools.model.codegen.execmodel.QueryTest.testQueryWithOOPath(QueryTest.java:300)

[tkobayas]

/take

[tkobayas]

Fixed by #5805