[antlr-interest] Problem runnign ANTLR

[Jean Bovet]

Yes, this is a problem with ANTLRWorks 1.2.2. Version 1.2.3 will fix  
that. The workaround is to avoid a white space in the path of the  
grammar file.

Jean

On Feb 7, 2009, at 2:32 PM, Terence Parr wrote:

> Hi. Yeah, I remember something about spaces in filenames or pathnames
> causing trouble. Judging from the location the code, it has some
> particular problem. I would search in the list archives to see if you
> can get a hit.
> Ter
> On Feb 7, 2009, at 2:30 PM, Ed Keith wrote:
>
>> I'm not sure what you mean.
>>
>> There are no spaces in the path the antlrworks-1.2.2.jar.
>>
>> My path environment variable has many spaces in it, as I suspect
>> every XP systems does. Microsoft puts many necessary files in
>> directories with spaces in the name (not a good idea IMHO, but they
>> did not ask me). If I removed all spaces from the path I think
>> Windows would crash. I know most of my applications would stop
>> working. If this is what is preventing ANTL from working then I will
>> need to use my Linux box, because ANTLR does not work on windows.
>>
>>  -EdK
>>
>> Ed Keith
>> e_d_k at yahoo.com
>>
>> Blog: edkeith.blogspot.com
>>
>> --- On Sat, 2/7/09, Terence Parr <parrt at cs.usfca.edu> wrote:
>>
>> From: Terence Parr <parrt at cs.usfca.edu>
>> Subject: Re: [antlr-interest] Problem runnign ANTLR
>> To: "Ed Keith" <e_d_k at yahoo.com>
>> Cc: antlr-interest at antlr.org
>> Date: Saturday, February 7, 2009, 5:16 PM
>>
>> space in path?
>> Ter
>> On Feb 7, 2009, at 2:14 PM, Ed Keith wrote:
>>
>>> I am at a machine running Windows XP.
>>>
>>> I downloaded antlrworks-1.2.2.jar and ran it.
>>>
>>> Then I tried to work through the tutorial at http://www.antlr.org/works/help/tutorial/calculator.html
>>> .
>>>
>>> I pasted the Expr grammar into the editor window, selected the
>>> interpreter tab, entered "2+3*4", selected "prog", clicked on the
>>> indicated button. . .
>>>
>>> A message in red appeared at the bottom of the window. It Read
>>> "Errors reported in console", So I clicked on the console tab and
>>> found the following message:
>>>
>>> [16:56:01] java.lang.NullPointerException
>>>    at org.antlr.xjlib.foundation.XJUtils.concatPath(Unknown Source)
>>>    at org.antlr.xjlib.foundation.XJUtils.concatPath(Unknown Source)
>>>    at
>>> org
>>> .antlr
>>> .works
>>> .components.editor.ComponentEditorGrammar.getOutputPath(Unknown
>>> Source)
>>>    at
>>> org
>>> .antlr
>>> .works
>>> .components.editor.ComponentEditorGrammar.getANTLRTool(Unknown
>>> Source)
>>>    at
>>> org
>>> .antlr.works.grammar.engine.GrammarEngineImpl.getANTLRTool(Unknown
>>> Source)
>>>    at
>>> org
>>> .antlr
>>> .works
>>> .grammar.antlr.ANTLRGrammarEngineImpl.createNewGrammar(Unknown
>>> Source)
>>>    at
>>> org
>>> .antlr
>>> .works
>>> .grammar.antlr.ANTLRGrammarEngineImpl.createParserGrammar(Unknown
>>> Source)
>>>    at
>>> org
>>> .antlr
>>> .works
>>> .grammar.antlr.ANTLRGrammarEngineImpl.createCombinedGrammar(Unknown
>>> Source)
>>>    at
>>> org
>>> .antlr
>>> .works.grammar.antlr.ANTLRGrammarEngineImpl.createGrammars(Unknown
>>> Source)
>>>    at
>>> org
>>> .antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.analyze(Unknown
>>> Source)
>>>    at
>>> org.antlr.works.grammar.engine.GrammarEngineImpl.analyze(Unknown
>>> Source)
>>>    at org.antlr.works.interpreter.EditorInterpreter.run(Unknown
>>> Source)
>>>    at java.lang.Thread.run(Unknown Source)
>>>
>>>
>>> A friend who is trying to convince to to give up C++ and move to
>>> Java tells me the main reason I should change is that you do not
>>> need to worry about NULL pointers in Java, looks like he is wrong.
>>>
>>> Can anyone point me to a solution for this problem?
>>>
>>> Thanks in advance,
>>>
>>>   -EdK
>>>
>>>
>>>
>>> Ed Keith
>>> e_d_k at yahoo.com
>>>
>>> Blog: edkeith.blogspot.com
>>>
>>>
>>>
>>>
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>>
>>
>>
>>
>>
>
>
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