/*
* Copyright 2000-2015 JetBrains s.r.o.
*
* 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 consulo.web.gwt.client.util;
/**
* @since 27.03.2012
*/
public class BitUtil {
public static boolean isSet(final byte value, final byte mask) {
assertOneBitMask(mask);
return (value & mask) == mask;
}
public static boolean isSet(final int value, final int mask) {
assertOneBitMask(mask);
return (value & mask) == mask;
}
public static boolean isSet(long flags, long mask) {
assertOneBitMask(mask);
return (flags & mask) == mask;
}
private static void assertOneBitMask(long mask) {
assert (mask & (mask - 1)) == 0 : "Mask must have only one bit set, but got: " + Long.toBinaryString(mask);
}
public static boolean notSet(final int value, final int mask) {
return (value & mask) != mask;
}
/**
* @return {@code value} with the bit corresponding to the {@code mask} set (if setBit is true) or cleared (if setBit is false)
*/
public static byte set(byte value, byte mask, boolean setBit) {
assertOneBitMask(mask);
return (byte)(setBit ? value | mask : value & ~mask);
}
/**
* @return {@code value} with the bit corresponding to the {@code mask} set (if setBit is true) or cleared (if setBit is false)
*/
public static int set(int value, int mask, boolean setBit) {
assertOneBitMask(mask);
return setBit ? value | mask : value & ~mask;
}
/**
* @return {@code value} with the bit corresponding to the {@code mask} set (if setBit is true) or cleared (if setBit is false)
*/
public static long set(long value, long mask, boolean setBit) {
assertOneBitMask(mask);
return setBit ? value | mask : value & ~mask;
}
}