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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2002-2004, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
** $Id$
\* */
package scala.xml;
import scala.collection.immutable;
/** The case class <code>Elem</code> implements the Node trait,
* providing an immutable data object representing an XML element.
*
* @param namespace the namespace code as assigned by NamespaceRegistry
* @param label the element name
* @param attribute the attribute map
* @param child the children of this node
* @author Burak Emir
*/
case class Elem( namespace$$:String, label$$: String, attribute:immutable.Map[String,String], child: Node*) extends Node {
final val namespaceIntern = namespace$$.intern();
final def namespace = namespaceIntern;
final val labelIntern = label$$.intern();
final def label = labelIntern;
final override def typeTag$:Int = 0;
def this(namespace: String, label: String, child: Node*) =
this(namespace, label, Node.NoAttributes, child:_*);
def this(label: String, child: Node*) =
this(Node.EmptyNamespace, label, Node.NoAttributes, child:_*);
/** Return a new element with updated attributes
*
* @param attrs
* @return a new symbol with updated attributes
*/
final def %(attrs: Seq[Pair[String, String]]): Elem = {
var newmap = new immutable.TreeMap[String, String]();
for ( val p <- attribute.elements ) {
newmap = newmap.update( p._1, p._2 )
}
for ( val p <- attrs ) {
newmap = newmap.update( p._1, p._2 )
}
Elem(namespace, label, newmap, child:_*)
}
/** Return a new symbol with updated attribute
*
* @param attr
* @return a new symbol with updated attribute
*/
final def %(attr: Pair[String, String]): Elem = {
var newmap = new immutable.TreeMap[String, String]();
for ( val p <- attribute.elements ) {
newmap = newmap.update( p._1, p._2 )
}
newmap = newmap.update( attr._1, attr._2 );
Elem(namespace, label, newmap, child:_*)
}
}
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