[
https://issues.apache.org/jira/browse/LUCENE-6417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14642111#comment-14642111
]
Uwe Schindler commented on LUCENE-6417:
---------------------------------------
Ah, I would replace the old-style Java 1.0 java.util.Stack by
java.util.ArrayDeque (which is not synchronized). This implements Deque, which
basically a generalization of array-based stack:
{code:java}
Deque<Type> typeStack = new ArrayDeque<>();
{code}
> 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
> Attachments: 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
