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/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2006-2007, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id$
package scala.collection.jcl;
/** Wraps Java lists.
*
* @author Sean McDirmid
*/
trait BufferWrapper[A] extends Buffer[A] with CollectionWrapper[A] {
def underlying : java.util.List[A];
override def elements : BufferIterator[Int,A] = new IteratorWrapper(underlying.listIterator);
override def remove(idx : Int) = underlying.remove(idx).asInstanceOf[A];
override def add(a : A) = underlying.add(a);
override def add(idx : Int, a : A) = underlying.add(idx,a);
override def addAll(idx : Int, that : Iterable[A]) = that match {
case that : CollectionWrapper[_] => underlying.addAll(idx, that.underlying); {}
case _ => super.addAll(idx, that);
}
override def indexOf(a : A) = {
val result = underlying.indexOf(a);
if (result == -1) None;
else Some(result);
}
override def apply(idx : Int) = underlying.get(idx).asInstanceOf[A];
override def set(idx : Int, a : A) = underlying.set(idx, a).asInstanceOf[A];
override def rangeImpl(from : Option[Int], until : Option[Int]) : Buffer[A] = new Range(from, until);
protected class Range(from : Option[Int], until : Option[Int]) extends super.Range(from,until) with BufferWrapper[A] {
val underlying = {
val fromi = if (from == None) 0 else from.get;
val toi = if (until == None) BufferWrapper.this.size else until.get;
BufferWrapper.this.underlying.subList(fromi, toi);
}
override def elements = super[BufferWrapper].elements;
}
class IteratorWrapper(underlying : java.util.ListIterator[A]) extends MutableIterator.Wrapper[A](underlying) with BufferIterator[Int,A] {
def add(a : A) = underlying.add(a);
def set(a : A) = underlying.set(a);
def hasPrevious = underlying.hasPrevious;
def previous = underlying.previous.asInstanceOf[A];
def previousIndex = underlying.previousIndex;
def nextIndex = underlying.nextIndex;
}
override def length = underlying.size;
}
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