Detecting Infinite Looping

["W. Eliot Kimber" <eliot@xxxxxxxxxx>]

I'm in the process of implementing HyTime location address resolution. One
of the possible error conditions is a circular reference where one location
address directly or indirectly addresses itself.  This is a reportable
HyTime error, for obvious reasons.  My question is this: how would I go
about detecting such a case in DSSSL? 

My logic constructs a node list by recursively processing each location
address found. How would I compare each new node to the node list at that
point to see if it's already in it (if it's a location address)?

Thanks,

E.
--
<Address HyTime=bibloc>
W. Eliot Kimber, Senior Consulting SGML Engineer
Highland Consulting, a division of ISOGEN International Corp.
2200 N. Lamar St., Suite 230, Dallas, TX 95202.  214.953.0004
www.isogen.com
</Address>


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