1/*
2 * Copyright (C) 2018 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 android.service.autofill;
18
19import android.annotation.Nullable;
20import android.view.autofill.AutofillId;
21
22import com.android.internal.util.Preconditions;
23
24/** @hide */
25final class AutofillServiceHelper {
26
27    static AutofillId[] assertValid(@Nullable AutofillId[] ids) {
28        Preconditions.checkArgument(ids != null && ids.length > 0, "must have at least one id");
29        // Can't use Preconditions.checkArrayElementsNotNull() because it throws NPE instead of IAE
30        for (int i = 0; i < ids.length; ++i) {
31            if (ids[i] == null) {
32                throw new IllegalArgumentException("ids[" + i + "] must not be null");
33            }
34        }
35        return ids;
36    }
37
38    private AutofillServiceHelper() {
39        throw new UnsupportedOperationException("contains static members only");
40    }
41}
42