scala.xml.factory.LoggedNodeFactory.scala Maven / Gradle / Ivy
/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2002-2013, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala
package xml
package factory
/**
* This class logs what the nodefactory is actually doing.
* If you want to see what happens during loading, use it like this:
* {{{
* object testLogged extends App {
* val x = new scala.xml.parsing.NoBindingFactoryAdapter
* with scala.xml.factory.LoggedNodeFactory[scala.xml.Elem] {
* override def log(s: String) = println(s)
* }
*
* Console.println("Start")
* val doc = x.load(new java.net.URL("http://example.com/file.xml"))
* Console.println("End")
* Console.println(doc)
* }
* }}}
*
* @author Burak Emir
* @version 1.0
*/
@deprecated("This trait will be removed.", "2.11")
trait LoggedNodeFactory[A <: Node] extends NodeFactory[A] {
// configuration values
val logNode = true
val logText = false
val logComment = false
val logProcInstr = false
final val NONE = 0
final val CACHE = 1
final val FULL = 2
/** 0 = no logging, 1 = cache hits, 2 = detail */
val logCompressLevel = 1
// methods of NodeFactory
/** logged version of makeNode method */
override def makeNode(pre: String, label: String, attrSeq: MetaData,
scope: NamespaceBinding, children: Seq[Node]): A = {
if (logNode)
log("[makeNode for " + label + "]")
val hash = Utility.hashCode(pre, label, attrSeq.##, scope.##, children)
/*
if(logCompressLevel >= FULL) {
log("[hashcode total:"+hash);
log(" elem name "+uname+" hash "+ ? ));
log(" attrs "+attrSeq+" hash "+attrSeq.hashCode());
log(" children :"+children+" hash "+children.hashCode());
}
*/
if (!cache.get(hash).isEmpty && (logCompressLevel >= CACHE))
log("[cache hit !]")
super.makeNode(pre, label, attrSeq, scope, children)
}
override def makeText(s: String) = {
if (logText)
log("[makeText:\"" + s + "\"]")
super.makeText(s)
}
override def makeComment(s: String): Seq[Comment] = {
if (logComment)
log("[makeComment:\"" + s + "\"]")
super.makeComment(s)
}
override def makeProcInstr(t: String, s: String): Seq[ProcInstr] = {
if (logProcInstr)
log("[makeProcInstr:\"" + t + " " + s + "\"]")
super.makeProcInstr(t, s)
}
def log(msg: String): Unit = {}
}