com.mchange.util.impl.HashIntChecklist Maven / Gradle / Ivy
/*
* Distributed as part of mchange-commons-java 0.2.11
*
* Copyright (C) 2015 Machinery For Change, Inc.
*
* Author: Steve Waldman
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of EITHER:
*
* 1) The GNU Lesser General Public License (LGPL), version 2.1, as
* published by the Free Software Foundation
*
* OR
*
* 2) The Eclipse Public License (EPL), version 1.0
*
* You may choose which license to accept if you wish to redistribute
* or modify this work. You may offer derivatives of this work
* under the license you have chosen, or you may provide the same
* choice of license which you have been offered here.
*
* This software 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.
*
* You should have received copies of both LGPL v2.1 and EPL v1.0
* along with this software; see the files LICENSE-EPL and LICENSE-LGPL.
* If not, the text of these licenses are currently available at
*
* LGPL v2.1: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* EPL v1.0: http://www.eclipse.org/org/documents/epl-v10.php
*
*/
package com.mchange.util.impl;
import com.mchange.util.IntChecklist;
import com.mchange.util.IntEnumeration;
public class HashIntChecklist implements IntChecklist
{
private final static Object DUMMY = new Object();
IntObjectHash ioh = new IntObjectHash();
public void check(int num)
{ioh.put(num, DUMMY);}
public void uncheck(int num)
{ioh.remove(num);}
public boolean isChecked(int num)
{return ioh.containsInt(num);}
public void clear()
{ioh.clear();}
public int countChecked()
{return ioh.getSize();}
public int[] getChecked()
{
synchronized (ioh)
{
int[] out = new int[ioh.getSize()];
IntEnumeration ints = ioh.ints();
for (int i = 0; ints.hasMoreInts(); ++i) out[i] = ints.nextInt();
return out;
}
}
public IntEnumeration checked()
{return ioh.ints();}
}