[antlr-interest] Ultimately Frustrated
Raymond J. Schneider
rschneid at bridgewater.edu
Fri Feb 13 20:39:52 PST 2009
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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