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 
17 package android.service.autofill;
18 
19 import android.annotation.Nullable;
20 import android.view.autofill.AutofillId;
21 
22 import com.android.internal.util.Preconditions;
23 
24 /** @hide */
25 final class AutofillServiceHelper {
26 
assertValid(@ullable AutofillId[] ids)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 
AutofillServiceHelper()38     private AutofillServiceHelper() {
39         throw new UnsupportedOperationException("contains static members only");
40     }
41 }
42