/*
* Copyright 2016 the original author or authors.
*
* 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 org.powermock.utils;
import java.lang.reflect.Array;
/**
*
*/
public class ArrayUtil {
public static <T> T[] addAll(T[] array1, T[] array2) {
if (isEmpty(array1)) {
return clone(array2);
} else if (isEmpty(array2)) {
return clone(array1);
}
int newLength = array1.length + array2.length;
T[] joinedArray = createNewArrayWithSameType(array1, newLength);
System.arraycopy(array1, 0, joinedArray, 0, array1.length);
System.arraycopy(array2, 0, joinedArray, array1.length, array2.length);
return joinedArray;
}
private static <T> boolean isEmpty(T[] a) {
return a == null || a.length == 0;
}
private static <T> T[] clone(T[] array) {
if (array == null) {
return null;
}
return array.clone();
}
@SuppressWarnings("unchecked")
private static <T> T[] createNewArrayWithSameType(T[] arrayPrototype, int newLength) {
return (T[]) Array.newInstance(arrayPrototype[0].getClass(), newLength);
}
}