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https://issues.apache.org/jira/browse/PIG-1618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12930293#action_12930293
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Thejas M Nair commented on PIG-1618:
------------------------------------
Unit tests have passed with javadoc.patch . The javadoc warnings were caused by
absence of antlr jar in javadoc classpath -
{code}
[exec] [javadoc] Constructing Javadoc information...
[exec] [javadoc]
/tmp/patchtestthejas/trunk/src/org/apache/pig/parser/QueryParserFileStream.java:23:
package org.antlr.runtime does not exist
[exec] [javadoc] import org.antlr.runtime.ANTLRFileStream;
[exec] [javadoc] ^
[exec] [javadoc]
/tmp/patchtestthejas/trunk/src/org/apache/pig/parser/QueryParserFileStream.java:29:
cannot find symbol
[exec] [javadoc] symbol: class ANTLRFileStream
[exec] [javadoc] public class QueryParserFileStream extends
ANTLRFileStream {
[exec] [javadoc] ^
{code}
> Switch to new parser generator technology
> -----------------------------------------
>
> Key: PIG-1618
> URL: https://issues.apache.org/jira/browse/PIG-1618
> Project: Pig
> Issue Type: Improvement
> Affects Versions: 0.8.0
> Reporter: Alan Gates
> Assignee: Xuefu Zhang
> Fix For: 0.9.0
>
> Attachments: antlr-3.2.jar, javadoc.patch, NewParser-1.patch,
> NewParser-2.patch
>
>
> There are many bugs in Pig related to the parser, particularly to bad error
> messages. After review of Java CC we feel these will be difficult to address
> using that tool. Also, the .jjt files used by JavaCC are hard to understand
> and maintain.
> ANTLR is being reviewed as the most likely choice to move to, but other
> parsers will be reviewed as well.
> This JIRA will act as an umbrella issue for other parser issues.
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