On further investigation, I'm wondering if this is a troublesome line in the 
Antlr debug classes:

https://fisheye2.atlassian.com/browse/antlr/runtime/Java/src/main/java/org/antlr/runtime/debug/RemoteDebugEventSocketListener.java?r=7009#l275

It appears to expect a boolean parameter after a numeric one. I used Wireshark 
and observed that no boolean parameter is being provided by Antlrworks. Would 
it be useful to default to false for this parameter if there is nothing 
provided in terms of providing backward compatibility; I see that the change 
was made as part of 7009:

https://fisheye2.atlassian.com/changelog/antlr/?cs=7009

Kind regards,
Christopher

On 13/12/2010, at 9:55 AM, Christopher Hunt wrote:

> Just out of interest, I reverted to 1.4 and had the same problem. So, while 
> there may be some other problem with 1.4.1, there is probably and issue with 
> my grammar. Here's the grammar so far in case anyone has thoughts (it parses 
> the zoneinfo database (1) - I'll release this to the ANTLR site when 
> finished):
> 
> /*
>  * Copyright 2010 Class Action P/L
>  *
>  * Licensed under the Apache License, Version 2.0 (the "License");
>  * you may not use this file except in compliance with the License.
>  * You may obtain a copy of the License at
>  *
>  *      http://www.apache.org/licenses/LICENSE-2.0
>  *
>  * Unless required by applicable law or agreed to in writing, software
>  * distributed under the License is distributed on an "AS IS" BASIS,
>  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
>  * See the License for the specific language governing permissions and
>  * limitations under the License.
>  */
>  
> grammar Zoneinfo;
> 
> options {
>       output=AST;
>       ASTLabelType=CommonTree;
>       language=Java;
> }
>       
> @header {
>       package com.classactionpl.tz;
> }
> 
> @lexer::header {
>       package com.classactionpl.tz;
> }
> 
> line
>       : (ruleLine | zoneLine | linkLine | NEWLINE)*
>       ;
> 
> ruleLine
>       : 'Rule' ruleName ruleFrom ruleTo ruleType ruleIn ruleOn ruleAt 
> ruleSave ruleLetters NEWLINE
>       ;
> 
> zoneLine
>       : 'Zone' zoneName zoneGmtOffset zoneRules zoneFormat 
>       (zoneUntil NEWLINE+ zoneGmtOffset zoneRules zoneFormat)* 
>       NEWLINE
>       ;
> 
> linkLine
>       : 'Link' linkFrom linkTo NEWLINE
>       ;
> 
> ruleName
>       : ID
>       ;
>       
> ruleFrom
>       : INT | YEAR_MINMAX
>       ;
>       
> ruleTo
>       : INT | YEAR_MINMAX | ONLY_YEAR
>       ;
>       
> ruleType
>       : '-' | YEAR_TYPE
>       ;
>       
> ruleIn
>       : MONTH
>       ;
>       
> ruleOn
>       : INT | LAST_DAY | (DAY_OF_WEEK DAY_COMPARATOR INT)
>       ;
>       
> ruleAt
>       : '-' | (positiveTime TIME_OF_DAY_SUFFIX?)
>       ;
>       
> ruleSave
>       : '-' | positiveTime
>       ;
>       
> ruleLetters
>       : '-' | ID
>       ;
> 
> zoneName
>       : ID
>       ;
> 
> zoneGmtOffset
>       : offset
>       ;
>       
> zoneRules
>       : '-' | positiveTime | ID
>       ;
>       
> zoneFormat
>       : ID ('/' ID)?
>       ;
> 
> zoneUntil
>       : INT (ruleIn (ruleOn ruleAt?)?)?
>       ;
> 
> linkFrom
>       : ID
>       ;
>       
> linkTo
>       : ID
>       ;
>       
> offset
>       : '-'? positiveTime
>       ;
> 
> positiveTime
>       : INT (':' INT (':' INT)?)?
>       ;
> 
> YEAR_MINMAX
>       : 'min' | 'max'
>       ;
> 
> ONLY_YEAR
>       : 'only'
>       ;
>       
> YEAR_TYPE
>       : 'even' | 'odd' | 'uspres' | 'nonpres' | 'nonuspres'
>       ;
> 
> MONTH
>       : 'Jan' 'uary'? 
>       | 'Feb' 'ruary'? 
>       | 'Mar' 'ch'? 
>       | 'Apr' 'il'? 
>       | 'May' 
>       | 'Jun' 'e'? 
>       | 'Jul' 'y'? 
>       | 'Aug' 'ust'? 
>       | 'Sep' 'tember'? 
>       | 'Oct' 'ober'? 
>       | 'Nov' 'ember'? 
>       | 'Dec' 'ember'?
>       ;
> 
> LAST_DAY
>       : 'last' '-'? DAY_OF_WEEK
>       ;
> 
> DAY_OF_WEEK 
>       : 'Sun' 'day'? 
>       | 'Mon' 'day'? 
>       | 'Tue' 'sday'? 
>       | 'Wed' 'nesday'? 
>       | 'Thu' 'rsday'? 
>       | 'Fri' 'day'? 
>       | 'Sat' 'urday'?
>       ;
>       
> DAY_COMPARATOR
>       : '<=' | '>='
>       ;
> 
> TIME_OF_DAY_SUFFIX
>       : 'w' | 's' | 'u' | 'g' | 'z'
>       ;
> 
> INT
>       : ('0'..'9')+
>       ;
> 
> ID
>       : ('a'..'z'|'A'..'Z'|'%')('a'..'z'|'A'..'Z'|'0'..'9'|'%'|'/'|'_'|'-')*
>       ;
> 
> NEWLINE
>       : ('#' ~('\n'|'\r')*)? '\r'? '\n' | EOF
>       ;
> 
> WS
>       : (' ' | '\t') {skip();}
>       ;
> 
> 
> Kind regards,
> Christopher
> 
> (1) http://www.twinsun.com/tz/tz-link.htm
> 
> On 10/12/2010, at 10:08 PM, Christopher Hunt wrote:
> 
>> Hi there,
>> 
>> I'm using Antlrworks v.1.4.1 on Mac OS X 10.6.5 and find that I cannot debug 
>> my grammar, despite all being well via the interpreter.
>> 
>> Here are my steps:
>> 1. Open a grammar
>> 2. Run/Debug...
>> 3. Select a file as input (makes no difference if I use the text option) and 
>> confirm
>> 
>> I then receive the generating/connecting messages and note that a socket 
>> connection is established i.e.:
>> 
>> tcp4       0      0  127.0.0.1.49100        127.0.0.1.60879        
>> ESTABLISHED
>> tcp4      27      0  127.0.0.1.60879        127.0.0.1.49100        
>> ESTABLISHED
>> tcp46      0      0  *.49100                *.*                    LISTEN
>> 
>> Clicking on any of the play buttons (step, step over etc.), appears to do 
>> nothing. The only event shown is "commence". If I stop the debugger I have 
>> to click the stop button twice whereupon it force quits (a single stop 
>> doesn't appear to do anything).
>> 
>> Are there known issues with my configuration?
>> 
>> Thanks for your help.
>> 
>> Kind regards,
>> Christopher
> 


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