com.hazelcast.util.BitSetUtils Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2018, Hazelcast, Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.util;
import java.util.BitSet;
/**
* Convenient method for BitSet manipulations
*/
public final class BitSetUtils {
private BitSetUtils() {
}
/**
* Returns true if at least one bit on a given position is set.
*
* @param bitSet the {@link BitSet} to modify
* @param indexes the index positions to check
* @return {@code true} if {@link BitSet} contains at least one bit at any position from index which is set,
* otherwise returns {@code false}
*/
public static boolean hasAtLeastOneBitSet(BitSet bitSet, Iterable indexes) {
for (Integer index : indexes) {
if (bitSet.get(index)) {
return true;
}
}
return false;
}
/**
* Returns true if all bits at given {@code indexes} are set.
*
* @param bitSet the {@link BitSet} to modify
* @param indexes the index positions to check
* @return {@code true} if {@link BitSet} all bits at given {@code indexes} are set.
* otherwise returns {@code false}
*/
public static boolean hasAllBitsSet(BitSet bitSet, Iterable indexes) {
for (Integer index : indexes) {
if (!bitSet.get(index)) {
return false;
}
}
return true;
}
/**
* Set all bits on a given positions.
*
* @param bitSet the {@link BitSet} to modify
* @param indexes the index positions to set
*/
public static void setBits(BitSet bitSet, Iterable indexes) {
for (Integer index : indexes) {
bitSet.set(index);
}
}
/**
* Unsets all bits on a given positions.
*
* @param bitSet the {@link BitSet} to modify
* @param indexes the index positions to set
*/
public static void unsetBits(BitSet bitSet, Iterable indexes) {
for (Integer index : indexes) {
bitSet.set(index, false);
}
}
}