[antlr-interest] ant & antlr

[David Penton]

Thank you Matthew.

- Dave -

On Sat, 2003-01-04 at 16:55, Matthew Ford wrote:
> Here is the bit of Ant that I use to compile a translator.  I am not expert
> but this seems to work.  I look at the Parser (or Walker or what ever is
> your toplevel translator file) and retranslate all files if I find it is out
> of date.
> 
> BTW Ant cannot seem to tell if the antlr flags in the build.xml file have
> been updated.  If I change the ${copyGlobalTrace} setting I have to do
> something dramatic (like delete the Parser) to get Ant to retranslate with
> this new setting.
> 
> <target name="checkTranslatorsUpToDate" >
>     <uptodate property="TranslatorsBuild.notRequired"
> targetfile="${translatorsSrc}/CopyGlobalParser.java">
>       <srcfiles dir= "${translatorsSrc}" includes="**/*.g"/>
>     </uptodate>
>   </target>
> 
>   <target name="translate" depends="checkTranslatorsUpToDate"
> unless="TranslatorsBuild.notRequired">
>     <!-- run antlr -->
>     <delete file="${translatorsSrc}/CopyGlobalLexer.java"/>
>     <delete file="${translatorsSrc}/CopyGlobalParser.java"/>
>     <delete>
>      <fileset dir="${translatorsSrc}" includes="*.txt"/>
>      </delete>
> 
>     <antlr target="${translatorsSrc}/CopyGlobalLexer.g"
>         trace="${copyGlobalTrace}">
>       <classpath>
>         <pathelement path="${classpath}/antlr.jar"/>
>       </classpath>
>     </antlr>
> 
>     <antlr target="${translatorsSrc}/CopyGlobalParser.g"
>         trace="${copyGlobalTrace}">
>       <classpath>
>         <pathelement path="${classpath}/antlr.jar"/>
>       </classpath>
>     </antlr>
>   </target>
> 
> matthew
> ----- Original Message -----
> From: "David Penton" <djplists at arrowsash.com>
> To: <antlr-interest at yahoogroups.com>
> Sent: Sunday, January 05, 2003 5:24 AM
> Subject: [antlr-interest] ant & antlr
> 
> 
> > This may properly be a question about ant.  I posted (not cross-posted)
> > a similar question to the ant mailing list, but I suppose I may be more
> > likely to get an answer here than there.
> >
> > The question is, can anyone tell me how to get ant to recognize
> > dependencies on exported/imported token vocabularies?  The antlr task in
> > ant does not seem to know (and perhaps cannot know) that a parser or
> > lexer should be regenerated if its imported token vocabulary changes. Is
> > there a good way to set ant up to handle this?
> >
> > I spent a frustrating hour last night looking for an error in my
> > grammars or input files which turned out to stem from the fact that my
> > lexer was using an outdated input vocabulary, i.e. my parser had changed
> > but ant did not run my lexer grammar through antlr again.
> >
> > Terence, if you read this, I note your recent comment that you hate
> > ant.  I am pretty new to ant, but so far I sure as hell don't love it
> > either.  I'm stuck with it on my project for now, though.
> >
> > - Dave -
> >
> >
> >
> >
> >
> >
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> >
> >
> >
> 
> 
>  
> 
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> 
> 



 

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