RE: Looking for an equivalent to recursion within a fo

This is a piece of code I have in one of my projects:

<xsl:template name="getNameSizeMax">

<xsl:param name="maxSize_" />
<xsl:param name="pos_" />

<xsl:choose>
<xsl:when test="field[$pos_]">
<xsl:variable name="_size" select="string-length(field[$pos_]/@name)" />

<xsl:variable name="_maxSize">
<xsl:choose>
<xsl:when test="number($_size) &gt; number($maxSize_)">
<xsl:value-of select="$_size" />
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$maxSize_" />
</xsl:otherwise>
</xsl:choose>
</xsl:variable>

<xsl:call-template name="getNameSizeMax">
<xsl:with-param name="maxSize_" select="$_maxSize" />
<xsl:with-param name="pos_" select="$pos_ + 1" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$maxSize_" />
</xsl:otherwise>
</xsl:choose>
		
</xsl:template>

My document has a <structure> element which has many <field> elements. Once
I am inside the <structure>, I call the template with maxSize_ = 0 and pos_
= 1, which will return the max name size of all the fields. You should be
able to use a similar logic to do what you want. Basically, instead of using
a for-each loop, I am using a predicate to process the next object in line.

Hope this helps.

EL

-----Original Message-----
From: owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx
[mailto:owner-xsl-list@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Erika Marlow
Sent: Friday, May 30, 2003 5:22 PM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx

Dear List Members:

I have run into a situation where I must increment a counter.  This can be
worked around using recursion and calling a template. However, I need to
increment the counter while I iterate through a node-set.  This would
normally just be a matter of adding another parameter to the template call,
but I have to increment the counter based on a condition while iterating
through the node-set.

The pseudo-code for this particular situation would be something like this:

function process-list-conditionally(list L)
{
  if (not-empty(L))
	for-each(L)
	  if (true)
	 	increment-counter
	  otherwise
		counter
}

Does anyone have any suggestions for how this might be accomplished?  I've
found myself running into recursion within a for loop, which is not
possible.

Thanks for any suggestions.
Erika

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