Re: Labels broken on new ccscript ??

David Sugar <[email protected]> Tue, 12 Sep 2006 18:09:07 -0400
Newsgroups gmane.comp.gnu.bayonne.devel
Message-ID <[email protected]>
There were originally several different ways to do labels in ccscript; 
either in the ::xx or xx: form, explicitly as private and/or public xx 
targets, as well as "function" xx.  In ccscript3, the older forms were 
dropped.  Hence we retained private/public xx for direct labels for goto 
and/or gosub, and function xx exclusively as a target of call.

Test Bayonne wrote:
> When trying to use a label with ccscript3-1.0.9 (used in Bayonne2), it 
> seems that it doesn't work anymore (was fine with the version used for 
> Bayonne1)
> 
> ex: test7.scr
>  echo "start script test6"
>  goto ::alpha
> 
> ::alpha
>  echo "alpha"
>  exit
> 
> When using the builtin testscript application in directory tests
> ./testscript test7
> compiled test7; 5 steps
> start script test6
> ccscript: test7.scr(2): script test7::alpha missing
> ccscript: test7.scr(4): script alpha missing
> alpha
> exiting...
> 
> In the previous version, the corresponding line for the label was stored 
> in an entry of the "index" array when compiling, it isn't true anymore 
> (the index array just contains one entry with the name of the script).
> With the previous version, in
> int ScriptImage::compile(istream *str, char *name, const char *scrname)
> when we identify a label (if(!strncmp(token, "::", 2)),), we break the 
> current loop and go to the compile label.
> With the new version, we set token to "call" and pretoken to "alpha" but 
> we don't go back to the label compile.
> Should we use the labels diffently ? or is it indeed a bug and could we 
> have a patch (the code changed too much to understand what we are 
> supposed to do) ?
> Thanks
> 
> 
> 
> 
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