Re: [Grammatica-users] small problem: ant action always fires

[Per Cederberg]

With some small modifications to your build.xml, this should be
possible to do. I think something like this should work (no time
to test right now... :)

<taskdef name="grammatica"
  classname="net.percederberg.grammatica.ant.GrammaticaTask"
  classpath="grammatica.jar" />

<target name="build-java">
  <uptodate property="subscript.uptodate"
    srcfile="subscript.grammar"
    targetfile="src/subscript/language/grammar/SubscriptParser.java" />
  <antcall target="build-codegen" />
  ...
</target>

<target name="build-codegen" unless="subscript.uptodate">
  <grammatica grammar="subscript.grammar">
    <java dir="src"
      package="subscript.language.grammar"
      public="true" />
  </grammatica>
</target>

The reason for the codegen being run always, is that you didn't
place the <grammatica> task inside a target. That meant that it
was called every time the build file was run.

Cheers,

/Per

On fri, 2005-03-11 at 11:48 -0500, Edwin Olson wrote:
> Hi!
> 
> First off, grammatica is good stuff. I'm using it to build a matlab-like 
> environment, since both octave and matlab have major issues as far as 
> I'm concerned. :)
> 
> I'm working in pure java, and everything's going great, except for a 
> small annoyance: anytime I invoke ant on my build.xml file, the 
> grammatica task "fires" and regenerates its source code. It does this 
> even if the grammar file has not changed, and even if I invoked 'ant 
> clean' (the generated files are then promptly deleted.)
> 
> This isn't a show stopper, but it is fairly annoying. It's entirely 
> possible I'm doing something wrong with my build.xml file, so I've 
> attached it.
> 
> Thanks for any advice,
> 
> -Ed
> 
> 
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