[mercury-users] Sluggish XML parsing

Michael Day mikeday at corplink.com.au
Sun Dec 24 17:33:38 AEDT 2000

> if you want to find out if higher order code is the culprit you could
> compare with my mercury xml parser:
> ftp://ftp.dcs.shef.ac.uk/home/tomas/xml-0.5.zip
> please report your findings :-)

Hmm, well it compiles a lot faster and runs blisteringly quickly, but a
comparison would not really be valid as it does not appear to do any
checking as to whether a document is well formed.
For example, this:


Is successfully parsed as this:


Which is not correct.

Nonetheless, it's nice that compiling it with -O6 takes minutes rather
than hours - is this particular sluggishness due to all the introduced
preds involved with higher order code? Compiler dudes?


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