1 /*
2  * Copyright (C) 2021 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.car.builtin.os;
18 
19 import android.annotation.NonNull;
20 import android.annotation.Nullable;
21 import android.annotation.SystemApi;
22 import android.os.Parcel;
23 import android.util.ArraySet;
24 
25 /**
26  * Helper for {@link Parcel}.
27  *
28  * @hide
29  */
30 @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
31 public final class ParcelHelper {
ParcelHelper()32     private ParcelHelper() {
33         throw new UnsupportedOperationException();
34     }
35 
36     /** Reads array of string from the passed parcel */
37     @Nullable
readStringArray(@onNull Parcel parcel)38     public static String[] readStringArray(@NonNull Parcel parcel) {
39         return parcel.readStringArray();
40     }
41 
42     /** Reads a Blob */
43     @Nullable
readBlob(@onNull Parcel parcel)44     public static byte[] readBlob(@NonNull Parcel parcel) {
45         return parcel.readBlob();
46     }
47 
48     /** Writes the byte array to the Parcel */
writeBlob(@onNull Parcel parcel, @Nullable byte[] b)49     public static void writeBlob(@NonNull Parcel parcel, @Nullable byte[] b) {
50         parcel.writeBlob(b);
51     }
52 
53     /** Reads ArraySet */
54     @Nullable
readArraySet(@onNull Parcel parcel, @Nullable ClassLoader loader)55     public static ArraySet<? extends Object> readArraySet(@NonNull Parcel parcel,
56             @Nullable ClassLoader loader) {
57         return parcel.readArraySet(loader);
58     }
59 
60     /** Writes ArraySet */
writeArraySet(@onNull Parcel parcel, @Nullable ArraySet<? extends Object> val)61     public static void writeArraySet(@NonNull Parcel parcel,
62             @Nullable ArraySet<? extends Object> val) {
63         parcel.writeArraySet(val);
64     }
65 }
66