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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2005, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id$
package scala.xml;
/** prefixed attributes always have a non-null namespace
*/
class PrefixedAttribute(val pre: String,
val key: String,
val value: String,
val next: MetaData) extends MetaData {
// verify that value is a proper attribute value (references, no <)
Utility.checkAttributeValue(value) match {
case null => ;
case msg => throw new MalformedAttributeException(msg);
}
/** Returns a copy of this unprefixed attribute with the given
* next field.
*/
def copy(next: MetaData) =
new PrefixedAttribute(pre, key, value, next);
//** duplicates the MetaData (deep copy), not preserving order */
//def deepCopy: MetaData = deepCopy(null);
//** duplicates the MetaData (deep copy), prepending it to tail */
/*
def deepCopy(tail: MetaData): MetaData = {
val md = copy(tail);
if (null == next)
md
else
next.deepCopy(md)
}
*/
def equals1(m: MetaData) =
(m.isPrefixed &&
(m.asInstanceOf[PrefixedAttribute].pre == pre) &&
(m.key == key) && (m.value == value));
def getNamespace(owner: Node) =
owner.getNamespace(pre);
/** forwards the call to next */
def getValue(key: String): String = next.getValue(key);
/** gets attribute value of qualified (prefixed) attribute with given key
*/
def getValue(namespace: String, scope: NamespaceBinding, key: String): String = {
if (key == this.key && scope.getURI(pre) == namespace)
value
else
next.getValue(namespace, scope, key);
}
/** returns true */
final def isPrefixed = true;
override def hashCode() =
pre.hashCode() * 41 + key.hashCode() * 7 + value.hashCode() * 3 + next.hashCode();
def toString1(sb:StringBuffer): Unit = {
sb.append(pre);
sb.append(':');
sb.append(key);
sb.append('=');
Utility.appendQuoted(value, sb);
}
def wellformed(scope: NamespaceBinding): Boolean = {
(null == next.getValue(scope.getURI(pre), scope, key)
&& next.wellformed(scope));
}
}
|
