You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
2.3 KiB
92 lines
2.3 KiB
/* SimpleSet Copyright (C) 1998-1999 Jochen Hoenicke.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; see the file COPYING. If not, write to
|
|
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*
|
|
* $Id$
|
|
*/
|
|
|
|
package jode.util;
|
|
///#def COLLECTIONS java.util
|
|
import java.util.AbstractSet;
|
|
import java.util.Iterator;
|
|
///#enddef
|
|
|
|
public class SimpleSet extends AbstractSet implements Cloneable
|
|
{
|
|
Object[] elementObjects;
|
|
int count = 0;
|
|
|
|
public SimpleSet() {
|
|
this(2);
|
|
}
|
|
|
|
public SimpleSet(int initialSize) {
|
|
elementObjects = new Object[initialSize];
|
|
}
|
|
|
|
public int size() {
|
|
return count;
|
|
}
|
|
|
|
public boolean add(Object element) {
|
|
if (element == null)
|
|
throw new NullPointerException();
|
|
|
|
for (int i=0; i< count; i++) {
|
|
if (element.equals(elementObjects[i]))
|
|
return false;
|
|
}
|
|
|
|
if (count == elementObjects.length) {
|
|
Object[] newArray = new Object[(count+1)*3/2];
|
|
System.arraycopy(elementObjects,0,newArray,0,count);
|
|
elementObjects = newArray;
|
|
}
|
|
elementObjects[count++] = element;
|
|
return true;
|
|
}
|
|
|
|
public Object clone() {
|
|
try {
|
|
SimpleSet other = (SimpleSet) super.clone();
|
|
other.elementObjects = (Object[]) elementObjects.clone();
|
|
return other;
|
|
} catch (CloneNotSupportedException ex) {
|
|
throw new jode.AssertError("Clone?");
|
|
}
|
|
}
|
|
|
|
public Iterator iterator() {
|
|
return new Iterator() {
|
|
int pos = 0;
|
|
|
|
public boolean hasNext() {
|
|
return pos < count;
|
|
}
|
|
|
|
public Object next() {
|
|
return elementObjects[pos++];
|
|
}
|
|
|
|
public void remove() {
|
|
if (pos < count)
|
|
System.arraycopy(elementObjects, pos,
|
|
elementObjects, pos-1, count - pos);
|
|
count--;
|
|
pos--;
|
|
}
|
|
};
|
|
}
|
|
}
|
|
|