Annoying warnings with CSharp3 target

Hi,

following our conversations, I've moved to a build where a generic grammar is used to produce language specific grammars, and lexers/parsers are produced programmatically using org.antlr.Tool v 3.5.1.

All is fine except I get annoying warnings when processing grammars for CSharp3 target, such as:
warning(24): template error: context [/outputFile /lexer /lexerRule /lexerRuleLabelDefs] 14:1 no such property or can't access: org.antlr.tool.Rule.charListLabels
Caused by: org.stringtemplate.v4.misc.STNoSuchPropertyException: no such property: org.antlr.tool.Rule.charListLabels
at org.stringtemplate.v4.misc.ObjectModelAdaptor.throwNoSuchProperty(ObjectModelAdaptor.java:106)
at org.stringtemplate.v4.misc.ObjectModelAdaptor.lookupMethod(ObjectModelAdaptor.java:99)
at org.stringtemplate.v4.misc.ObjectModelAdaptor.getProperty(ObjectModelAdaptor.java:67)
at org.stringtemplate.v4.Interpreter.getObjectProperty(Interpreter.java:1158)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:210)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:145)
at org.stringtemplate.v4.Interpreter.writeObject(Interpreter.java:703)
at org.stringtemplate.v4.Interpreter.writeObjectNoOptions(Interpreter.java:635)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:285)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:145)
at org.stringtemplate.v4.Interpreter.writeObject(Interpreter.java:703)
at org.stringtemplate.v4.Interpreter.writeIterator(Interpreter.java:733)
at org.stringtemplate.v4.Interpreter.writeObject(Interpreter.java:708)
at org.stringtemplate.v4.Interpreter.writeObjectWithOptions(Interpreter.java:665)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:292)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:145)
at org.stringtemplate.v4.Interpreter.writeObject(Interpreter.java:703)
at org.stringtemplate.v4.Interpreter.writeObjectNoOptions(Interpreter.java:635)
at org.stringtemplate.v4.Interpreter._exec(Interpreter.java:285)
at org.stringtemplate.v4.Interpreter.exec(Interpreter.java:145)
at org.stringtemplate.v4.ST.write(ST.java:415)
at org.antlr.codegen.CodeGenerator.write(CodeGenerator.java:1296)
at org.antlr.codegen.Target.genRecognizerFile(Target.java:98)
at org.antlr.codegen.CSharp3Target.genRecognizerFile(CSharp3Target.java:109)
at org.antlr.codegen.CodeGenerator.genRecognizer(CodeGenerator.java:459)
at org.antlr.Tool.generateRecognizer(Tool.java:674)
at org.antlr.Tool.process(Tool.java:487)
at presto.generator.ParserProducer.produce(ParserProducer.java:27)
at presto.generator.Application.main(Application.java:36)
Caused by: java.lang.NoSuchFieldException: charListLabels
at java.lang.Class.getField(Class.java:1537)
at org.stringtemplate.v4.misc.ObjectModelAdaptor.lookupMethod(ObjectModelAdaptor.java:88)
... 27 more

warning(24): template error: context [/outputFile /parser /genericParser /rule /returnScope] 1:4 no such property or can't access: null.attributes

Is there something I can do about it ?

Kind regards,

Eric

Reproduce the warnings with org.antlr.Tool 3.5.1, then trace the reported path through CodeGenerator.java, Target.java, CSharp3Target.java, and the StringTemplate contexts. Compare the lexerRule and returnScope processing with the generated grammar input. Done means the CSharp3 generation completes without these template-property warnings.

Written by the indexing model from the issue text.