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https://issues.apache.org/jira/browse/LUCENE-6417?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jack Conradson updated LUCENE-6417:
-----------------------------------
Attachment: LUCENE-6417.patch
Attached a new patch with the requested changes. All classes should be
package-private now except for VariableContext and the JavascriptCompiler.
> Upgrade ANTLR to version 4.5
> ----------------------------
>
> Key: LUCENE-6417
> URL: https://issues.apache.org/jira/browse/LUCENE-6417
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Jack Conradson
> Assignee: Uwe Schindler
> Attachments: 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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