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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-6417) Upgrade ANTLR to version 4.5
Date Sun, 09 Aug 2015 12:14:45 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-6417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14679120#comment-14679120
] 

ASF subversion and git services commented on LUCENE-6417:
---------------------------------------------------------

Commit 1694880 from [~thetaphi] in branch 'dev/branches/branch_5x'
[ https://svn.apache.org/r1694880 ]

Merged revision(s) 1694876,1694879 from lucene/dev/trunk:
LUCENE-6417: Make JavascriptCompiler completely stateless (thanks to visitor pattern)

> Upgrade ANTLR to version 4.5
> ----------------------------
>
>                 Key: LUCENE-6417
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6417
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/expressions
>            Reporter: Jack Conradson
>            Assignee: Uwe Schindler
>             Fix For: Trunk, 5.4
>
>         Attachments: LUCENE-6417-cleanups.patch, LUCENE-6417.patch, LUCENE-6417.patch,
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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