[Roxygen-devel] roxygen and subclassing? - Error in cdr(preorder.flatten.expression(expression))

[Mark Herzog]

Thank you very much-

That solved the problem.
Mark

-----Original Message-----
From: Manuel J. A. Eugster [mailto:Manuel.Eugster at stat.uni-muenchen.de]
Sent: Sunday, August 23, 2009 12:40 AM
To: Mark Herzog; roxygen-devel at lists.r-forge.r-project.org
Subject: Re: [Roxygen-devel] roxygen and subclassing? - Error in cdr(preorder.flatten.expression(expression))

Hi Mark,

in case of S4 you have to specify the classes, methods, etc in
"full style", e.g.,

setClass("BClass",
   contains=c("BClass"),
   representation=representation(
     s1="character",
     s2="numeric"))

That's because the Roxygen parser is very rudimentary in case of
S4.


Best,

Manuel.



Mark Herzog wrote:
> Hello -
>
>
>
> I am working with the devel source code (S4 support) and receiving the
> following error (includes roxygen call, in case that helps):
>
>
>
>>  roxygenize(package.dir=paste(work.dir,"/release/",sep=""),
>
> + roxygen.dir=paste(work.dir,"/release/pkg.roxygen",sep=""),
>
> + copy.package=FALSE,
>
> + unlink.target=FALSE,
>
> + use.Rd2=TRUE
>
> + )
>
> Error in cdr(preorder.flatten.expression(expression)) :
>
>   CDRing a null list
>
>
>
> After doing some  investigation, I believe it is related to subclassing,
> (e.g. using 'contains' argument within a setClass statement).
>
> Is this something that is not supported yet within roxygen, or am I
> doing something incorrectly? Is there a workaround?
>
> I tried adding #' @nord to the line before the setClass statement, but
> that didn't seem to help.
>
>
>
>>  Sys.info()
>
>                      sysname                      release
>
>                    "Windows"                         "XP"
>
>                      version
>
> "build 2600, Service Pack 3"
>
>                      machine
>
>                        "x86"
>
>>
>
>
>
> Thanks for any insight,
>
> Mark
>
>
>
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> Informatics Division Director
>
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