RE: [xsl] calculating pow of numbers and a final sum

["Yates, Danny (ANTS)" <danny.yates@xxxxxxxxxx>]

Hi Andreas,

The easiest way to deal with this is with recursion:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
  <xsl:output method="text"/>
  
  <xsl:template match="logging">
    <xsl:if test="child::target[1]">
      <xsl:call-template name="output-targets">
        <xsl:with-param name="nodes" select="child::target"/>
      </xsl:call-template>
    </xsl:if>
  </xsl:template>
  
  <xsl:template name="output-targets">
    <xsl:param name="nodes"/>
    <xsl:param name="pos" select="1"/>
    <xsl:param name="value" select="1"/>
    
    <xsl:choose>
      <xsl:when test="$nodes[$pos]">
        <xsl:text>public static final int </xsl:text>
        <xsl:value-of select="translate($nodes[$pos]/@name, 
                                        'abcdefghijklmnopqrstuvwxyz', 
                                        'ABCDEFGHIJKLMNOPQRSTUVWXYZ')"/>
        <xsl:text> = </xsl:text>
        <xsl:value-of select="$value"/>
        <xsl:text>;&#x0A;</xsl:text>
      
        <xsl:call-template name="output-targets">
          <xsl:with-param name="nodes" select="$nodes"/>
          <xsl:with-param name="pos" select="$pos + 1"/>
          <xsl:with-param name="value" select="$value * 2"/>
        </xsl:call-template>
      </xsl:when>
      <xsl:otherwise>
        <xsl:text>public static final int ALL = </xsl:text>
        <xsl:value-of select="$value"/>
        <xsl:text>;&#x0A;</xsl:text>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>
</xsl:stylesheet>

-----Original Message-----
From: Andreas Mecky [mailto:andreasmecky@xxxxxxxx]
Sent: 22 January 2003 09:06
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: [xsl] calculating pow of numbers and a final sum


Hello everybody,

I am kind of a newbie to this mailing list and I have a problem that keeps
me busy for some time now.
I am working on a code generator for some java classes.
This is my XML:

<?xml version="1.0" ?>
<logging>
  <target name="init"/>
  <target name="debug"/>
  <target name="fatal"/>
</logging>

this should result in:

public static final int INIT = 1;
public static final int DEBUG = 2;
public static final int FATAL = 4;
public static final int ALL = 8;

I can get everything working except the numbers. How can I calculate the
numbers which
are something like counter=2^(pos-1)?
This all entry is generated automatically. At this point I need either to
sum all former values
or do the same calculation as mentioned above.

Some research on google did not helped me out.

Any suggestions?

Thanx in advance

Andreas

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