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Re: Accurate line and column numbers for elements and attribut

  • From: John Snelson <john.snelson@o...>
  • To: Michael Kay <mike@s...>
  • Date: Fri, 06 Jun 2008 23:57:09 +0100

Re:  Accurate line and column numbers for elements and attribut
Michael Kay wrote:
> I don't really accept the arguments about attribute value normalization. I
> think the real reason parsers (and APIs) don't provide more information is
> an obsession with performance, not realizing that for many applications,
> parser performance is not the #1 objective.

That's fair enough - I think I was trying to be more charitable to 
parser writers. Attribute value normalization certainly causes problems 
when trying to parse XPath from an attribute value and give good error 

However I would say that reporting accurate line and column numbers has 
very little to do with performance, as I've been able to write a parser 
with roughly the same performance as expat that does just that.


John Snelson, Oracle Corporation            http://snelson.org.uk/john
Berkeley DB XML:            http://oracle.com/database/berkeley-db/xml
XQilla:                                  http://xqilla.sourceforge.net

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