blob: 825758b64bf547fe3151a5ccf6224c31466ff26a (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/* __ *\
** ________ ___ / / ___ Scala API **
** / __/ __// _ | / / / _ | (c) 2003-2006, LAMP/EPFL **
** __\ \/ /__/ __ |/ /__/ __ | **
** /____/\___/_/ |_/____/_/ | | **
** |/ **
\* */
// $Id$
package scala.collection.mutable
/** This class can be used as an adaptor to create mutable maps from
* Java classes that implementat the <code>java.util.Map</code> interface.
*
* @author Matthias Zenger
* @version 1.0, 21/07/2003
*/
class JavaMapAdaptor[A, B](jmap: java.util.Map) extends Map[A, B] {
def size: Int = jmap.size()
def get(key: A): Option[B] =
if (jmap.containsKey(key)) Some(jmap.get(key).asInstanceOf[B]) else None
override def isEmpty: Boolean = jmap.isEmpty()
override def apply(key: A): B = jmap.get(key).asInstanceOf[B]
override def contains(key: A): Boolean = jmap.containsKey(key)
override def isDefinedAt(key: A) = jmap.containsKey(key)
override def keys: Iterator[A] = new Iterator[A] {
val iter = jmap.keySet().iterator()
def hasNext = iter.hasNext()
def next = iter.next().asInstanceOf[A]
}
override def values: Iterator[B] = new Iterator[B] {
val iter = jmap.values().iterator()
def hasNext = iter.hasNext()
def next = iter.next().asInstanceOf[B]
}
def elements: Iterator[{A, B}] = new Iterator[{A, B}] {
val iter = jmap.keySet().iterator()
def hasNext = iter.hasNext()
def next = {
val key = iter.next().asInstanceOf[A]
{key, apply(key)}
}
}
def update(key: A, value: B): Unit = { val x = jmap.put(key, value); }
def -= (key: A): Unit = { val x = jmap.remove(key); }
override def clear(): Unit = jmap.clear()
override def clone(): Map[A, B] = {
val res = new HashMap[A, B]
res ++= this
res
}
}
|
