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From "Jack Conradson (JIRA)" <>
Subject [jira] [Commented] (LUCENE-6417) Upgrade ANTLR to version 4.5
Date Tue, 04 Aug 2015 22:48:04 GMT


Jack Conradson commented on LUCENE-6417:

Uwe, would it be possible to move the implemented visitor methods from the JavascriptCompiler
into a private static inner class inside of the JavascriptCompiler to hide them properly and
then make all the other public classes package protected either through regexs like we already
do for some of the classes in the build.xml file?  Would this satisfy the requirements of
keeping all the ANTLR methods hidden or is there more that I'm missing?

> Upgrade ANTLR to version 4.5
> ----------------------------
>                 Key: LUCENE-6417
>                 URL:
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Jack Conradson
>            Assignee: Uwe Schindler
>         Attachments: LUCENE-6471.patch, LUCENE-6471.patch, LUCENE-6471.patch
> I would like to upgrade ANTLR from 3.5 to 4.5.  This version adds several features that
will improve the existing grammars.  The main improvement would be the allowance of left-hand
recursion in grammar rules which will reduce the number of rules significantly for expressions.
> This change will require some code refactoring to the existing expressions work.

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