[jira] [Created] (UIMA-4517) fixing ArrayOutOfBounds exception when parsing invalid Ruta script

["Renaud Richardet (JIRA)" <de...@uima.apache.org>]

Renaud Richardet created UIMA-4517:
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             Summary: fixing ArrayOutOfBounds exception when parsing invalid Ruta script
                 Key: UIMA-4517
                 URL: https://issues.apache.org/jira/browse/UIMA-4517
             Project: UIMA
          Issue Type: Bug
          Components: ruta
    Affects Versions: 2.3.1ruta
            Reporter: Renaud Richardet
            Priority: Minor
             Fix For: 2.3.1ruta


looking for more informative exception messages when parsing invalid Ruta script

When using Ruta in a non-Workbench setup (in my case, Maven), I don't manage to catch Ruta script errors in a meaningful way. Here is an example:

"aaa\." -> MyAnnotation; // fails because of escaped dot

The thrown error is quite uninformative:

java.lang.ArrayIndexOutOfBoundsException: -1
	at org.apache.uima.ruta.parser.RutaParser.emitErrorMessage(RutaParser.java:365)
	at org.apache.uima.ruta.parser.RutaParser.reportError(RutaParser.java:386)
	at org.antlr.runtime.BaseRecognizer.recoverFromMismatchedToken(BaseRecognizer.java:603)
	at org.antlr.runtime.BaseRecognizer.match(BaseRecognizer.java:115)
	at org.apache.uima.ruta.parser.RutaParser.file_input(RutaParser.java:680)
	at org.apache.uima.ruta.engine.RutaEngine.loadScript(RutaEngine.java:1058)
	at org.apache.uima.ruta.engine.RutaEngine.initializeScript(RutaEngine.java:743)
	...

Here is the code to reproduce: https://github.com/renaud/annotate_ruta_example/tree/ruta_error_message

However, if I paste that script line in the Ruta Workbench, it nicely underlines it in red at the exact location, and even says "Mismatched input". How do I achieve the same programatically (from Java)?



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