I am saying that you should clear up this stuff everywhere first though. Then your best bet is to generate the code with the -debug flag, build it and run it then debug remotely with ANTLRWorks. I also sometimes just use the Java debugger as the generated method names match the rules.
jim > -----Original Message----- > From: Ashutosh Chauhan [mailto:[email protected]] > Sent: Friday, September 23, 2011 12:50 PM > To: Jim Idle > Cc: [email protected] > Subject: Re: [antlr-interest] Different parse tree in 3.1 Vs 3.4 > > Hey Jim, > > Thanks for taking a look. I can see what you are saying, but as far as > I can see those productions will never be used in the test-case I am > having, so those are irrelevant for the problem at hand. > > Thanks, > Ashutosh > > On Fri, Sep 23, 2011 at 12:30, Jim Idle <[email protected]> wrote: > > Try the following: > > > > 1) You have things like: > > > > : KW_RESTRICT > > -> ^(TOK_RESTRICT) > > > > Which are a little pointless - you could just use the existing parser > > token: > > > > : KW_RESTRICT > > > > But writing a single token will not produce a node anyway. > > > > Next, you have things like this: > > > > : > > keyValueProperty (COMMA keyValueProperty)* -> ^(TOK_DBPROPLIST > > keyValueProperty+) > > ; > > > > Which I think will need to be: > > > > : > > k+=keyValueProperty (COMMA k+=keyValueProperty)* -> > > ^(TOK_DBPROPLIST > > $k+) > > ; > > > > Start with that and let's see where you get to. > > > > Jim > > > >> -----Original Message----- > >> From: [email protected] [mailto:antlr-interest- > >> [email protected]] On Behalf Of Ashutosh Chauhan > >> Sent: Friday, September 23, 2011 10:59 AM > >> To: [email protected] > >> Subject: [antlr-interest] Different parse tree in 3.1 Vs 3.4 > >> > >> Hey, > >> > >> I work on Apache Hive project which was using Antlr 3.0.1 till now > >> and its working great. Thank you guys. Now I am trying to port it to > >> 3.4 and I see antlr returning incorrect parse tree in 3.4 which used > >> to be correct in 3.0.1. I tested with 3.1 and thats returning > correct > >> parse tree too. Grammar is defined here: > >> > >> > https://svn.apache.org/repos/asf/hive/trunk/ql/src/java/org/apache/ha > >> do > >> op/hive/ql/parse/Hive.g > >> > >> and test program is: > >> > >> insert overwrite table alter3 partition (pCol1='test_part:', > >> pcol2='test_part:') select col1 from alter3_src ; > >> > >> In 3.0.1 and 3.1 I get following parse tree which is correct > >> (nil(TOK_QUERY (TOK_FROM(TOK_TABREF > >> (TOK_TABNAME(alter3_src))))(TOK_INSERT > >> > (TOK_DESTINATION(TOK_TAB(TOK_TABNAME(alter3))(TOK_PARTSPEC(TOK_PARTVA > >> L( > >> > pCol1)('test_part:'))(TOK_PARTVAL(pcol2)('test_part:')))))(TOK_SELECT > >> (T > >> OK_SELEXPR(TOK_TABLE_OR_COL(col1))))))(null)) > >> > >> whereas in 3.4 I get following parse tree which is incomplete and > >> thus incorrect (nil(TOK_QUERY (TOK_FROM (TOK_TABREF > >> (TOK_TABNAME(alter3_src))))(TOK_INSERT > >> (TOK_DESTINATION(TOK_TAB))(TOK_SELECT (TOK_SELEXPR > >> (TOK_TABLE_OR_COL(col1))))))(<EOF>)) > >> > >> Is there something I should keep in mind while trying to upgrade to > >> 3.4. I was not able to test with 3.2 or 3.3 because of a different > >> problem in ant plugin of antlr because of which I was not able to > >> build. It was failing following stacktrace: > >> > >> Exception in thread "main" java.lang.NoClassDefFoundError: > >> antlr/RecognitionException > >> [java] at org.antlr.Tool.getRootGrammar(Tool.java:551) > >> [java] at org.antlr.Tool.process(Tool.java:422) > >> [java] at org.antlr.Tool.main(Tool.java:91) > >> [java] Caused by: java.lang.ClassNotFoundException: > >> antlr.RecognitionException > >> > >> I will be happy to provide any more information which will help > >> figure out this issue. > >> > >> Thanks for your help, > >> Ashutosh > >> > >> List: http://www.antlr.org/mailman/listinfo/antlr-interest > >> Unsubscribe: > >> http://www.antlr.org/mailman/options/antlr-interest/your- > >> email-address > > > > List: http://www.antlr.org/mailman/listinfo/antlr-interest > > Unsubscribe: > > http://www.antlr.org/mailman/options/antlr-interest/your-email- > address > > List: http://www.antlr.org/mailman/listinfo/antlr-interest Unsubscribe: http://www.antlr.org/mailman/options/antlr-interest/your-email-address -- You received this message because you are subscribed to the Google Groups "il-antlr-interest" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/il-antlr-interest?hl=en.
