[XML-SIG] Child nodes and lazy evaluation (Generators)
Thu, 23 Nov 2000 10:57:59 -0700
> This sounds like an excellent utility for a "pull DOM parser", where
> you receive DOM events as you ask for them, out of a queue. In a
> basic "pull DOM parser" though, no real magic is necessary as long as
> you have an incremental parser feeding the DOM builder.
> James Clark's Jade DSSSL processor uses a similar technique for
> manipulating partial groves. Jade had the ability to be parsing the
> source file and doing the transform in parallel, if any node requested
> was not yet parsed, the node request would block until the parser
> thread caught up.
Yes. If Python gets coroutines, this would be pretty simple to implement as
well. As I've mentioned on the 4Suite lists, if some of the facilities from
Stackless were to move into cpython (which seems likely), a _lot_ of
sophistication will become available for XML processing patterns that I think
would put us way ahead of Java, Perl, etc.
Uche Ogbuji Principal Consultant
email@example.com +1 303 583 9900 x 101
Fourthought, Inc. http://Fourthought.com
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Software-engineering, knowledge-management, XML, CORBA, Linux, Python