On Wed, Mar 31, 2021 at 06:46:05PM -0000, Liam R. E. Quin
liam(_at_)fromoldbooks(_dot_)org scripsit:
On Wed, 2021-03-31 at 18:26 +0000, Graydon graydon(_at_)marost(_dot_)ca wrote:
How do I get those DEBUG result documents back out of the function?
You probably do need to have your function take a map as an argument.
A sequence of "documents-so-far" is even less elegant when you start
dealing with where to write them out to.
For posterity:
<xd:doc>
<xd:desc>process transformation events in list order with fetched
params</xd:desc>
<xd:param name="initial">the document we're going to transform</xd:param>
<xd:param name="list">the list of transformation event names we need to
process</xd:param>
<xd:param name="results">the accumulating return values of the successive
transform() calls</xd:param>
</xd:doc>
<xsl:function name="local:processList" as="map(*)">
<xsl:param as="document-node()" name="initial" />
<xsl:param as="xs:string*" name="list" />
<xsl:param as="map(*)" name="results" />
<xsl:choose>
<xsl:when test="not(exists($list))">
<!-- no more event names to process, so stop and return what we were
called with -->
<xsl:sequence
select="map:merge((map:entry('processed',$initial),$results))" />
</xsl:when>
<xsl:otherwise>
<!-- we still have events to process -->
<xsl:variable name="temp" as="map(*)" select="transform(
map:merge(
($transformMap(head($list)),
map:entry('source-node', $initial))
)
)"/>
<!-- when we add this transform result, remove the output key because
that will duplicate -->
<xsl:sequence select="
local:processList($temp?output,tail($list),map:merge(($results,map:remove($temp,'output')))
)" />
</xsl:otherwise>
</xsl:choose>
</xsl:function>
Not elegant, but functional.
I think it would be helpful for map:merge() to throw a warning if the
second argument doesn't contain any recognizable option names.
Thanks!
--
Graydon Saunders | graydonish(_at_)gmail(_dot_)com
Þæs oferéode, ðisses swá mæg.
-- Deor ("That passed, so may this.")
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