DefaultHashCodeBuilder.java
/*
* Java Genetic Algorithm Library (@__identifier__@).
* Copyright (c) @__year__@ Franz Wilhelmstötter
*
* 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.
*
* Author:
* Franz Wilhelmstötter (franz.wilhelmstoetter@gmx.at)
*/
package org.jenetics.internal.util;
import java.util.Arrays;
import org.jenetics.util.HashCodeBuilder;
import org.jenetics.util.Seq;
import org.jenetics.util.arrays;
/**
* @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
* @since 1.0
* @version 1.0 — <em>$Date$</em>
*/
@SuppressWarnings("deprecation")
public final class DefaultHashCodeBuilder
extends HashCodeBuilder
implements Hash
{
private static final int P1 = 47;
private static final int P2 = 103;
private static final int P3 = 1231;
private static final int P4 = 1237;
public DefaultHashCodeBuilder(final Class<?> type) {
super(type);
}
@Override
public DefaultHashCodeBuilder and(final boolean value) {
_hash += value ? P3 : P4; return this;
}
@Override
public DefaultHashCodeBuilder and(final boolean[] values) {
_hash += Arrays.hashCode(values); return this;
}
@Override
public DefaultHashCodeBuilder and(final byte value) {
_hash += P1*value + P2; return this;
}
@Override
public DefaultHashCodeBuilder and(final byte[] values) {
_hash += Arrays.hashCode(values); return this;
}
@Override
public DefaultHashCodeBuilder and(final char value) {
_hash += P1*value + P2; return this;
}
@Override
public DefaultHashCodeBuilder and(final char[] values) {
_hash += Arrays.hashCode(values); return this;
}
@Override
public DefaultHashCodeBuilder and(final short value) {
_hash += P1*value + P2; return this;
}
@Override
public DefaultHashCodeBuilder and(final short[] values) {
_hash += Arrays.hashCode(values); return this;
}
@Override
public DefaultHashCodeBuilder and(final int value) {
_hash += P1*value + P2; return this;
}
@Override
public DefaultHashCodeBuilder and(final int[] values) {
_hash += Arrays.hashCode(values); return this;
}
@Override
public DefaultHashCodeBuilder and(final long value) {
_hash += P1*(int)(value^(value >>> 32)); return this;
}
@Override
public DefaultHashCodeBuilder and(final long[] values) {
_hash += Arrays.hashCode(values); return this;
}
@Override
public DefaultHashCodeBuilder and(final float value) {
_hash += P1*Float.floatToIntBits(value); return this;
}
@Override
public DefaultHashCodeBuilder and(final float[] values) {
_hash += Arrays.hashCode(values); return this;
}
@Override
public DefaultHashCodeBuilder and(final double value) {
long bits = Double.doubleToLongBits(value);
_hash += (int)(bits^(bits >>> 32));
return this;
}
@Override
public DefaultHashCodeBuilder and(final double[] values) {
_hash += Arrays.hashCode(values); return this;
}
@Override
public DefaultHashCodeBuilder and(final Object value) {
_hash += P1*(value == null ? 0 : value.hashCode()) + P2; return this;
}
@Override
public DefaultHashCodeBuilder and(final Object[] values) {
_hash += Arrays.hashCode(values); return this;
}
@Override
public DefaultHashCodeBuilder and(final Seq<?> values) {
_hash += arrays.hashCode(values); return this;
}
}