Set Levels on Roots

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public static void rootLevel(Node d) {
    dom = (Document) d;
    setRootLevel(d.getFirstChild());
}
private static int setRootLevel( Node node ){
   int level = 0;
//  String clName = null;
   if (node.hasChildNodes()) {
     <.count root levels inherited from children .>
     String ndName =  node.getNodeName();
     <.block for roots .>
     if( ndName.equals("msqrt") || ndName.equals("mroot") ){
         <.set extra levels for roots .>
         level++;
   } }
   return level;
}

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<..count root levels inherited from children ..>

NodeList children = node.getChildNodes();
int max = 0;
for (int i = 0; i < children.getLength(); i++) {
   Node child = children.item(i);
   if (child.getNodeType() == Node.ELEMENT_NODE) {
     int d = setRootLevel(child);
     if( d > max ){ max = d; }
} }
level += max;

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<..block for roots ..>

if( ndName.equals("msub") || ndName.equals("msup") ||
ndName.equals("msubsup")
) {
return 0;
}

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<..set extra levels for roots ..>

for (int i = 0; i < children.getLength(); i++) {
   Node child = children.item(i);
   if (child.getNodeType() == Node.ELEMENT_NODE) {
     Node cls = child.getAttributes()
                     .getNamedItem("class");
     if (cls != null) {
       String clsName = cls.getNodeValue();
       if( clsName.equals("begin-root")
           || clsName.equals("mid-root")
           || clsName.equals("end-root")
       ){
          insertLevelPrefix(child, level);
} } } }

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10 Set Levels on Roots