[XPS-devel] New Schema Version

[Reid S. <ras...@re...>]

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Hi,

Sorry for the long delay in sending news about XPS. I figured I might as
well wait until I had something worthwhile to say. Much of my time was
taken up with settling in after the move to SF Bay area. That nasty need
for money has kept me away.  Anyway,  I'm back working on XPS as much as
I can.

Tonight I committed all my recent changes (all build on RedHat 7.3).
Here's a summary (in priority order):
        1. src/schemas/XPL.xsd - this is a new schema without all the
           abstract stuff. This is the way the schema will look from now
           on. Its much simpler. Everything's in one file. All the
           elements are concrete (with the exception of a few
           substitution groups for the operators).  I would encourage
           everyone to review this (best with XML Spy) and let me know
           what they think. Hopefully its an improvement. This schema
           will form the foundation for the first version of the
           compiler (which I'm starting on next).  I hope to have an XPL
           validator (can point out syntax/semantic errors) in the next
           couple of months. That should prove to be the first useful
           tool for everyone as it will "almost" compile XPL.  Once that
           is done, I'll plug in the GCC backend to produce code from
           the semantic map. That will probably take a couple more
           months.
        2. src/mem - the first version of this persistent/transient
           memory module has been completed. I've written an initial
           test suite for it and the basics all seem to work. About the
           only pressing thing remaining is testing it for thread
           safety.
        3. src/xvm - I've upgraded the XVM shell. It compiles to a
           program that doesn't do a whole heck of a lot but at least it
           is there. 
        4. src/util & src/test - these basic modules were upgraded and
           tested
        5. configuration - some minor improvements to configure.in, the
           makefiles, bootstrap.sh, templates, etc.
To look at the schema, you can get it from the SourceForge CVS
repository here:

http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/extprosys/src/schemas/XPL.xsd

To try building this (way early) version of XPS (or just looking at it),
you should get the gzipped tarball from:

http://cvs.sourceforge.net/cvstarballs/extprosys-cvsroot.tar.gz

and compile it on RedHat 7.3. Just run "bootstrap.sh" in the top
directory to run the compilation. You'll need ACE 5.2 at a minimum to
successfully compile.

If you're adventurous, try it compiling it on cygwin. It should (mostly)
work, but Its been a while since I tried it. 

As always, if you have questions, feel free to ask.

Best Regards,

Reid.