match in a set of nodes

dextermagnific · July 11th, 2006, 03:34 AM

Hi,
i have another question :
i have this code :

Code:

<xsl:for-each-group select="*" group-ending-with="if|expr_stmt[expr/call[name=$grab/*[name()='call']]]">

....

<xsl:value-of select="current-group()[name()!='if' and name()!='decl_stmt']" />

i want to add the condition that it must not include the expr_stmt that contain items listed in $grab. unfortunately, i cannot use the same expression ad in group-ending-with because here we use name() and a string must be supplied. i cannot do name()!='expr_stmt'[...] any ideas of how to do that ? i tried the function node() but doesn't seem to work. i don't know its exact behavior.

Thanks in advance.

mhkay · July 11th, 2006, 03:44 AM

IIRC, I came to the conclusion that the reason you were using $grab/*[name()='call'] rather than $grab/call was that you had namespaces in scope that you weren't showing me. Please bite that bullet, and use $grab/x:call where x is bound to the correct namespace.

But I think (more groping in the dark, it's so much easier when people show you the code) that "if" and "expr" and perhaps "decl_stmt" are not in any namespace.

so you should be able to do

<xsl:value-of select="current-group[not (self::if or self::decl_stmt or self::expr_stmt[expr/call[name=$grab/x:call]])]"

Why not write yourself a function:

<xsl:function name="f:final" as="xs:boolean">
  <xsl:param name="n" as="node()"/>
  <xsl:param name="grab" as="element()"/>
  <xsl:sequence select="self::if or expr_stmt[expr/call[name=$grab/x:call]]">
</xsl:function>

then

group-ending-with="f:final(.)"

and you can reuse the function in your value-of test.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference

dextermagnific · July 11th, 2006, 04:09 AM

Hi again and thank you for your response.
the <call> is not bound to any namespace i have :

<xsl:variable name="grab">
  <call>main</call>
  <call>foo2</call>
</xsl:variable>

maybe you're right saying that if, ... are not bound to any namespace. the generated C -> XML file has this header :

<?xml version="1.0" encoding="iso-8859-1" standalone="yes"?>
<unit xmlns="http://www.sdml.info/srcML/src" xmlns:cpp="http://www.sdml.info/srcML/cpp" language="C++">

but in order to process it with XSLT, i had to add a prefix : <x:unit xmlns:x=...>

in my stylesheet, i have :

<xsl:stylesheet
  xmlns="http://www.sdml.info/srcML/src"
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
  xmlns:cpp="http://www.sdml.info/srcML/cpp"
  xmlns:c2sig=""
  version="2.0">

is it right ?
i have a function named c2sig, why should it have a prefix ?

the condition : not (self::if or self::decl_stmt or self::expr_stmt[expr/call[name=$grab/x:call]])] worked fine. thanks a lot again.

mhkay · July 11th, 2006, 04:26 AM

If your stylesheet starts

<xsl:stylesheet
  xmlns="http://www.sdml.info/srcML/src"

and then has

<xsl:variable name="grab">
  <call>main</call>
  <call>foo2</call>
</xsl:variable>

then the <call> elements are in namespace http://www.sdml.info/srcML/src.

All stylesheet functions need to be declared in a namespace to distinguish them from system functions. It's just one of those rules.

Michael Kay
http://www.saxonica.com/
Author, XSLT Programmer's Reference and XPath 2.0 Programmer's Reference