Re: ElemApplyTemplates implementation

Hi, Tomas.

Tomas Studva <tstudva@xxxxxxxxx> wrote on 2007-10-10
04:59:28 PM:
> 1,
> In ElemApplyTemplates when matching node against template there is
code
> case DTM.TEXT_NODE:
>
[HZ:  Deleted code]
> 
> There is some default template, sroot.getDefaultTextRule(), but it
is
> not executed and instead direct call to
> dtm.dispatchCharactersEvents(child, rth,false); is performed.
> Why?(optimization?)

Yes, that's an optimization because that particular
template rule is invoked so often.

> 2, In ElemApplyTemplates after template is found, is set on stacks
and
> so on and params are processed, follows code with comment
> // And execute the child templates.
> // Loop through the children of the template,
> // calling execute on
> // each of them.
[HZ:  Deleted code]
> which directly executes children of matched template insted of executing
> template. Why?

It looks to me like somebody - Scott Boag very early on, probably - did
that to eliminate the extra step of recursively invoking the execute method
on the xsl:template element.  I'm guessing it was done that way to
increase the amount of recursive processing that could be done without
causing a Java StackOverflowException.

Thanks,

Henry
------------------------------------------------------------------
Henry Zongaro      XSLT Processors Development
IBM SWS Toronto Lab   T/L 969-6044;  Phone +1 905 413-6044
mailto:zongaro@xxxxxxxxxx