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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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Uwe Schindler updated LUCENE-6417:
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Attachment: LUCENE-6417-cleanups.patch
I have some cleanups for the ANTLR stuff (build.xml):
- Remove useless regular expressions
- Don't copy-paste always the same, use a patternset for the files to edit
- remove the {.tokens} files after regenerating, they are not needed
- rename the grammar Javascript.g to Javascript.g4 (the ANTLR documentation
suggests g4 for the new grammar files, so editors can detect the type correctly)
> 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-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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