[CZT-Devel] Re: CZT Parser(s) - Circus extension

[Petra M. <pe...@cs...>]

Hi,

Leo wrote:
> I guess that I need to include another branch in the ant task Petra
> produced to cover circus, is that right? I mean, once I have included
> a new production into the XML files, what are the steps to follow to
> produce the parser class?  ... Just include something like
> 
> <target name="generate-circus-parser" depends="circus-parser, 
> circus-lparser, circus-uparser, circus-parserutils"/>
> 
> (plus the related targets) and then run the ant scripts?

Yes, that's it. :-)

For example, the Circus java_cup source is build by a target like this:

<target name="circus-parser-cup" depends="init">
   <xslt
     in="templates/Parser.xml"
     out="${build.src.circus.dir}/Parser.cup"
     style="${czt.home}/devtools/template2text.xsl">
     <param name="class" expression="Parser"/>
     <param name="package"
            expression="net.sourceforge.czt.parser.circus"/>
     <param name="add" expression="{circus}"/>
   </xslt>
</target>

As you can see, the .cup file is generated by applying the XSL script
devtools/template2text.xsl to the parser/templates/Parser.xml file.
Params "class" and "package" are used to set the class and package name 
of the parser to be generated. I suggest to use a Circus package for 
your parser as shown above.

Param "add" selects the parser version to be generated.  Your parser 
needs, in addition to the Standard Z parser code, all code included in 
<add:circus> tags. It is also possible to have a list of tags that 
should be added as, for example, in "{oz}{tcoz}".

Setting up the build file shouldn't be too difficult. I can do that for 
you if you want.

Cheers,
Petra