/*
* Copyright (c) 2012, the Dart project authors.
*
* Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html
*
* 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.google.dart.server.utilities.general;
/**
* The class {@code ObjectUtilities} defines general utility methods that are useful across all
* objects.
*
* @coverage dart.server.utilities
*/
public final class ObjectUtilities {
/**
* Combine two hash codes to make a new one.
*
* @param firstHashCode the first hash code to be combined
* @param secondHashCode the second hash code to be combined
* @return the result of combining the hash codes
*/
public static int combineHashCodes(int firstHashCode, int secondHashCode) {
return firstHashCode * 31 + secondHashCode;
}
/**
* Return {@code true} if the given objects are equal.
*
* @param first the first object being compared
* @param second the second object being compared
* @return {@code true} if the given objects are equal
*/
public static boolean equals(Object first, Object second) {
if (first == null) {
return second == null;
} else if (second == null) {
return false;
}
return first.equals(second);
}
/**
* Prevent the creation of instances of this class.
*/
private ObjectUtilities() {
}
}