path: root/sources/scala/collection/mutable/HashSet.scala

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2003, LAMP/EPFL                  **
**  __\ \/ /__/ __ |/ /__/ __ |                                         **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
** $Id$
\*                                                                      */

package scala;

/** I promise, there will be some documentation soon! :-) Matthias
 */
class HashSet[A] extends MutableSet[A] with HashTable[A] {

    def contains(elem: A): Boolean = findEntry(elem) match {
        case None => false
        case Some(_) => true
    }

    def add(elem: A): Unit = findEntry(elem) match {
        case None => addEntry(elem);
        case Some(_) =>
    }

    def elements = entries;

    override def clear = {
        initTable(table.length - 1);
        tableSize = 0;
    }

    protected type Entry = A;

    protected def entryKey(e: Entry) = e;
}