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
17package org.conscrypt;
18
19/**
20 * Compatibility utility for Arrays.
21 */
22final class ArrayUtils {
23    private ArrayUtils() {}
24
25    /**
26     * Checks that the range described by {@code offset} and {@code count}
27     * doesn't exceed {@code arrayLength}.
28     */
29    static void checkOffsetAndCount(int arrayLength, int offset, int count) {
30        if ((offset | count) < 0 || offset > arrayLength || arrayLength - offset < count) {
31            throw new ArrayIndexOutOfBoundsException("length=" + arrayLength + "; regionStart="
32                    + offset + "; regionLength=" + count);
33        }
34    }
35}
36