[antlr-interest] Ultimately Frustrated

[Robert Soule]

It looks like you are expecting your files to be in the package "test".
I would remove the line "package test;" from your grammar. Alternatively,
you could make a directory "test", and move all the files that expect to
be in the package "test" into the test directory.

On Fri, Feb 13, 2009 at 11:39 PM, Raymond J. Schneider
<rschneid at bridgewater.edu> wrote:
> Doesn't work: (I've tried that! although it seems to reduce the number of errors.  I included the folder's directory if that helps at all)
>  Directory of I:\E
>
> 02/13/2009  09:55 PM    <DIR>          .
> 02/13/2009  09:55 PM    <DIR>          ..
> 01/28/2009  01:38 PM         2,239,854 antlrworks-1.2.2.jar
> 02/13/2009  09:41 PM             1,164 Expr.g
> 10/28/2008  05:08 PM           116,205 antlr-3.1.1-runtime.jar
> 02/13/2009  10:46 PM            13,618 ExprParser.java
> 02/13/2009  10:46 PM               132 Expr.tokens
> 02/13/2009  10:46 PM            13,082 ExprLexer.java
> 02/13/2009  10:55 PM               382 Test.java
>               7 File(s)      2,384,437 bytes
>               2 Dir(s)   3,649,765,376 bytes free
>
> I:\E>javac -classpath .;antlrworks-1.2.2.jar Test.java ExprLexer.java ExprParser
> .java
> .\ExprLexer.java:9: duplicate class: test.ExprLexer
> public class ExprLexer extends Lexer {
>       ^
> Test.java:6: cannot access ExprLexer
> bad class file: .\ExprLexer.java
> file does not contain class ExprLexer
> Please remove or make sure it appears in the correct subdirectory of the classpa
> th.
>        ExprLexer lexer = new ExprLexer(input);
>        ^
> 2 errors
> --
> Ray Schneider,PE, Ph.D
> Associate Professor
> Math and Computer Science
> Bridgewater College
> http://www.bridgewater.edu/~rschneid/
> http://theweedlessgarden.blogspot.com
> ________________________________________
> From: Robert Soule [robert.soule at gmail.com]
> Sent: Friday, February 13, 2009 23:22
> To: Raymond J. Schneider
> Cc: antlr-interest at antlr.org
> Subject: Re: [antlr-interest] Ultimately Frustrated
>
> Hi Raymond,
>
> Try adding "." to your classpath, to include the current directory.
>
> javac -classpath .:antlrworks-1.2.2.jar Test.java ExprLexer.java ExprParser.java
>
> -Robert
>
> On Fri, Feb 13, 2009 at 11:10 PM, Raymond J. Schneider
> <rschneid at bridgewater.edu> wrote:
>> I'm really frustrated with what must be a trivial problem but I seem to be chasing my tail.
>> To try to isolate things I put the antlrworks-1.2.2.jar file in a folder with Expr.g
>> I ran:> java -cp antlrworks-1.2.2.jar org.antlr.Tool Expr.g
>> That generated ExprLexer.java, ExprParser.java, and Expr.tokens
>> So I added to the directory the Test Harness Test.java with the code:
>>
>> ---
>> import org.antlr.runtime.*;
>>
>> public class Test {
>>    public static void main(String[] args) throws Exception {
>>        ANTLRInputStream input = new ANTLRInputStream(System.in);
>>        ExprLexer lexer = new ExprLexer(input);
>>        CommonTokenStream tokens = new CommonTokenStream(lexer);
>>        ExprParser parser = new ExprParser(tokens);
>>        parser.prog();
>>    }
>> }
>> ---
>> Then I tried to compile it with:
>>>javac -cp antlrworks-1.2.2.jar Test.java ExprLexer.java ExprParser.java
>>
>> All the documentation seems to indicate this should work but what I get is:
>> I:\E>javac -classpath antlrworks-1.2.2.jar Test.java ExprLexer.java ExprParser.java
>> Test.java:6: cannot find symbol
>> symbol  : class ExprLexer
>> location: class Test
>>        ExprLexer lexer = new ExprLexer(input);
>>        ^
>> Test.java:6: cannot find symbol
>> symbol  : class ExprLexer
>> location: class Test
>>        ExprLexer lexer = new ExprLexer(input);
>>                              ^
>> Test.java:8: cannot find symbol
>> symbol  : class ExprParser
>> location: class Test
>>        ExprParser parser = new ExprParser(tokens);
>>        ^
>> Test.java:8: cannot find symbol
>> symbol  : class ExprParser
>> location: class Test
>>        ExprParser parser = new ExprParser(tokens);
>>                                ^
>> Note: ExprParser.java uses unchecked or unsafe operations.
>> Note: Recompile with -Xlint:unchecked for details.
>> 4 errors
>>
>> All the .java files are in the same directory
>> Probably some old hand can look at this as identify my error, but I certainly can't seem to.
>> I'd appreciate any help.
>> I can run Expr.g in ANTLRWorks directly but not from the command line.
>>
>> Regards, Ray
>> --
>> Ray Schneider,PE, Ph.D
>> Associate Professor
>> Math and Computer Science
>> Bridgewater College
>> http://www.bridgewater.edu/~rschneid/
>> http://theweedlessgarden.blogspot.com
>>
>>
>> List: http://www.antlr.org/mailman/listinfo/antlr-interest
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>>
>