package scala.collection
package mutable
import generic._
import scala.collection.parallel.mutable.ParHashMap
@SerialVersionUID(1L)
class HashMap[A, B] private[collection] (contents: HashTable.Contents[A, DefaultEntry[A, B]])
extends Map[A, B]
with MapLike[A, B, HashMap[A, B]]
with HashTable[A, DefaultEntry[A, B]]
with CustomParallelizable[(A, B), ParHashMap[A, B]]
with Serializable
{
initWithContents(contents)
type Entry = DefaultEntry[A, B]
override def empty: HashMap[A, B] = HashMap.empty[A, B]
override def clear() = clearTable()
override def size: Int = tableSize
def this() = this(null)
override def par = new ParHashMap[A, B](hashTableContents)
def get(key: A): Option[B] = {
val e = findEntry(key)
if (e == null) None
else Some(e.value)
}
override def put(key: A, value: B): Option[B] = {
val e = findEntry(key)
if (e == null) { addEntry(new Entry(key, value)); None }
else { val v = e.value; e.value = value; Some(v) }
}
override def update(key: A, value: B): Unit = put(key, value)
override def remove(key: A): Option[B] = {
val e = removeEntry(key)
if (e ne null) Some(e.value)
else None
}
def += (kv: (A, B)): this.type = {
val e = findEntry(kv._1)
if (e == null) addEntry(new Entry(kv._1, kv._2))
else e.value = kv._2
this
}
def -=(key: A): this.type = { removeEntry(key); this }
def iterator = entriesIterator map {e => (e.key, e.value)}
override def foreach[C](f: ((A, B)) => C): Unit = foreachEntry(e => f(e.key, e.value))
override def keySet: collection.Set[A] = new DefaultKeySet {
override def foreach[C](f: A => C) = foreachEntry(e => f(e.key))
}
override def values: collection.Iterable[B] = new DefaultValuesIterable {
override def foreach[C](f: B => C) = foreachEntry(e => f(e.value))
}
override def keysIterator: Iterator[A] = new Iterator[A] {
val iter = entriesIterator
def hasNext = iter.hasNext
def next() = iter.next.key
}
override def valuesIterator: Iterator[B] = new Iterator[B] {
val iter = entriesIterator
def hasNext = iter.hasNext
def next() = iter.next.value
}
def useSizeMap(t: Boolean) = if (t) {
if (!isSizeMapDefined) sizeMapInitAndRebuild
} else sizeMapDisable
private def writeObject(out: java.io.ObjectOutputStream) {
serializeTo(out, _.value)
}
private def readObject(in: java.io.ObjectInputStream) {
init[B](in, new Entry(_, _))
}
}
object HashMap extends MutableMapFactory[HashMap] {
implicit def canBuildFrom[A, B]: CanBuildFrom[Coll, (A, B), HashMap[A, B]] = new MapCanBuildFrom[A, B]
def empty[A, B]: HashMap[A, B] = new HashMap[A, B]
}