Re: [xsl] is it possible to simulate <xsl:import> precedence within a single stylesheet file?

["Chris Papademetrious christopher.papademetrious@xxxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Hi Martin,

Thanks for trying the SEF experiment! It sounds like I would lose the ability
to interactively fiddle with the code, which would defeat the purpose of my
exercise. Still, I learned something new today!


Hi Michael,

Thatbs pretty cool how Saxon constructs the global sorted list of templates.
I think the hard part for me to emulate this is parsing the match expressions
in XSLT to compute implicit priority values. But then I thought perhaps the
<xsl:import> precedence might not actually matter much for plugin development,
since (1) later overrides earlier for the same priority, and (2) I typically
specify an explicit higher priority when I override something in the base
processing. So, I decided to punt on precedence emulation now and see what the
next hurdle to fiddling with DiTA-OT processing is.

I wrote a simple stylesheet to inline imported/included XSLT files:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl=http://www.w3.org/1999/XSL/Transform
exclude-result-prefixes="#all" version="3.0">

  <!-- apply multiple processing modes ("inline", "flatten") -->
  <xsl:template match="/">
    <xsl:variable name="result" as="document-node()" select="."/>
    <xsl:variable name="result" as="document-node()">
      <xsl:apply-templates select="$result" mode="inline"/>
    </xsl:variable>
    <xsl:variable name="result" as="document-node()">
      <xsl:apply-templates select="$result" mode="flatten"/>
    </xsl:variable>
    <xsl:sequence select="$result"/>
  </xsl:template>

  <!-- inline imported/included stylesheets -->
  <xsl:mode name="inline" on-no-match="shallow-copy"/>
  <xsl:template match="(xsl:import|xsl:include)[@href]" mode="inline">
    <xsl:variable name="doc" as="document-node()"
select="document(resolve-uri(@href, .))"/>
    <xsl:apply-templates select="$doc" mode="#current"/>
  </xsl:template>

  <!-- flatten nested stylesheets -->
  <xsl:mode name="flatten" on-no-match="shallow-copy"/>
  <xsl:template match="/*//xsl:stylesheet" mode="flatten">
    <xsl:apply-templates select="node()" mode="#current"/>  <!-- unwrap nested
stylesheet elements -->
  </xsl:template>
  <xsl:template match="/xsl:stylesheet" mode="flatten">
    <xsl:copy>
      <xsl:apply-templates select="namespace::*|//xsl:stylesheet/namespace::*"
mode="#current"/>  <!-- pull nested stylesheet namespaces to the top -->
      <xsl:apply-templates select="@*|//xsl:stylesheet/@*" mode="#current"/>
<!-- pull nested stylesheet attributes to the top -->
      <xsl:apply-templates select="node()" mode="#current"/>
    </xsl:copy>
  </xsl:template>

</xsl:stylesheet>

This created a single stylesheet b hooray! But I could not use it in an
XSLT-fiddle because document() calls did not resolve. For example,

<xsl:variable name="variableFiles"
select="document($variableFiles.url)/langlist/lang" as="element(lang)*"/>
<xsl:sequence select="document(., $variableFiles[1])/*/*[@name = $id or @id =
$id]"/>
<xsl:variable name="msgdoc" select="document('platform:/config/messages.xml')"
as="document-node()?"/>
<xsl:variable name="targetDoc" as="document-node()?"
select="document($resourcePart, root(if(exists($baseContextElement)) then
$baseContextElement else $linkElement))"/>

I think this could be handled with some more work in the inliner stylesheet,
but that is a project for a later day. If I get something working, Ibll
reply back here to share it!


  *   Chris


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