<!--
  Weaving rule for
    srcML element:     unit
    advice type:       add
    codeModifier type: import
-->
<xsl:stylesheet xmlns:src="http://www.sdml.info/srcML/src" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xw="http://www.pnp-software.com/XWeaver" xmlns:java="http://www.sdml.info/srcML/java" xmlns:xd="http://www.pnp-software.com/XSLTdoc" xmlns:ax="http://control.ee.ethz.ch/XWeaver/AspectX" version="2.0">
                
  
                   <xd:doc type="stylesheet">
    <xd:short>Weaving Rule that adds an import statement to a unit. </xd:short>
    <xd:detail>
      <ul> 
        <li>srcML element:     <code>src:unit</code></li>
        <li>advice type:       <code>add</code></li>
        <li>codeModifier type: <code>java:import</code></li>
      </ul>
      Adds imports to the first possible location of the following choices: 
      <ol>
        <li>Directly before other import statements</li>
        <li>Before first class definition</li>
      </ol>
      <h2>Example</h2>
      <div class="source">
<pre>import util:*;

public class Inventory {
        private int x;
        ...
}</pre>
      </div>
      <h3>Code Modifier</h3>
      <xd:xml>
<codeModifier type="import">
  <text>import test.*;</text>
  <text>import custom.*;</text>
</codeModifier>
      </xd:xml>
      <h3>Modified Code</h3>
      <div class="source">
<pre>import test.*;
import custom.*;
import util:*;

public class Inventory {
        private int x;
        ...
}</pre>
      </div>
     <xd:weaverRuleLinks pointcutType="src:unit" adviceType="add" codeModifierType="import" />
    </xd:detail>
    <xd:cvsId>$Id$</xd:cvsId>
    <xd:author>ibirrer</xd:author>
    <xd:copyright>2004, P&amp;P Software GmbH</xd:copyright>
  </xd:doc>

  
  <!-- Preserve Whitespaces -->
  <xsl:preserve-space elements="*" />
  
  
                   <xd:doc>
    Adds includes to the first possible location of the following choices: 
    <ul>
      <li>Directly before other inlcudes</li>
      <li>After a package declaration</li>
      <li>At the beginning</li>
    </ul>
  </xd:doc>

  <xsl:template match="src:unit[ax:advice[@type='add' and position() = 1]/ax:codeModifier[@type='import']]" mode="weaving">
    <xsl:copy>
      <xsl:copy-of select="@*" />
      <!-- The current advice has to be deleted. Others must be preserved.  -->
      <xsl:copy-of select="ax:advice[position() != 1]" />
      
      <xsl:choose>
        <xsl:when test="java:import">
          <!-- There are other imports. Add new imports directly before them -->
          <xsl:apply-templates select="java:import/preceding-sibling::node()" mode="weaving" />
          <xsl:apply-templates select="java:import" mode="weaving" />
          <xsl:text>
</xsl:text>
          <xsl:copy-of select="xw:getCodeModifierContent(ax:advice/ax:codeModifier)" />
          <xsl:apply-templates select="java:import/following-sibling::node()" mode="weaving" />
        </xsl:when>
        <xsl:when test="java:package_decl">
          <!-- No existing imports in source file, but a package statement found -->
          <xsl:apply-templates select="java:package_decl/preceding-sibling::node()" mode="weaving" />
          <xsl:apply-templates select="java:package_decl" mode="weaving" />
          <xsl:text>
</xsl:text>
          <xsl:copy-of select="xw:getCodeModifierContent(ax:advice/ax:codeModifier)" />
          <xsl:apply-templates select="java:package_decl/following-sibling::node()" mode="weaving" />
        </xsl:when>
        <xsl:otherwise>
          <xsl:copy-of select="xw:getCodeModifierContent(ax:advice/ax:codeModifier)" />
          <xsl:apply-templates mode="weaving" />
        </xsl:otherwise>
      </xsl:choose>
    </xsl:copy>
  </xsl:template>
</xsl:stylesheet>






































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