scala.actors.remote.FreshNameCreator.scala Maven / Gradle / Ivy
/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2005-2013, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
package scala.actors
package remote
object FreshNameCreator {
protected var counter = 0
protected val counters = new scala.collection.mutable.HashMap[String, Int]
/**
* Create a fresh name with the given prefix. It is guaranteed
* that the returned name has never been returned by a previous
* call to this function (provided the prefix does not end in a digit).
*/
def newName(prefix: String): Symbol = {
val count = counters.get(prefix) match {
case Some(last) => last + 1
case None => 0
}
counters.update(prefix, count)
Symbol(prefix + count)
}
def newName(): Symbol = {
counter += 1
Symbol("$" + counter + "$")
}
}