1 /*
2  * Copyright 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package org.conscrypt.util;
18 
19 /**
20  * Compatibility utility for Arrays.
21  */
22 public final class ArrayUtils {
ArrayUtils()23     private ArrayUtils() {
24     }
25 
26     /**
27      * Checks that the range described by {@code offset} and {@code count}
28      * doesn't exceed {@code arrayLength}.
29      *
30      * @hide
31      */
checkOffsetAndCount(int arrayLength, int offset, int count)32     public static final void checkOffsetAndCount(int arrayLength, int offset, int count) {
33         if ((offset | count) < 0 || offset > arrayLength || arrayLength - offset < count) {
34             throw new ArrayIndexOutOfBoundsException("length=" + arrayLength + "; regionStart="
35                     + offset + "; regionLength=" + count);
36         }
37     }
38 }
39