| /** |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.hardware.radio; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.Set; |
| |
| final class Utils { |
| static void writeStringMap(@NonNull Parcel dest, @Nullable Map<String, String> map) { |
| if (map == null) { |
| dest.writeInt(0); |
| return; |
| } |
| dest.writeInt(map.size()); |
| for (Map.Entry<String, String> entry : map.entrySet()) { |
| dest.writeString(entry.getKey()); |
| dest.writeString(entry.getValue()); |
| } |
| } |
| |
| static @NonNull Map<String, String> readStringMap(@NonNull Parcel in) { |
| int size = in.readInt(); |
| Map<String, String> map = new HashMap<>(); |
| while (size-- > 0) { |
| String key = in.readString(); |
| String value = in.readString(); |
| map.put(key, value); |
| } |
| return map; |
| } |
| |
| static <T extends Parcelable> void writeSet(@NonNull Parcel dest, @Nullable Set<T> set) { |
| if (set == null) { |
| dest.writeInt(0); |
| return; |
| } |
| dest.writeInt(set.size()); |
| set.stream().forEach(elem -> dest.writeTypedObject(elem, 0)); |
| } |
| |
| static <T> Set<T> createSet(@NonNull Parcel in, Parcelable.Creator<T> c) { |
| int size = in.readInt(); |
| Set<T> set = new HashSet<>(); |
| while (size-- > 0) { |
| set.add(in.readTypedObject(c)); |
| } |
| return set; |
| } |
| |
| static void writeIntSet(@NonNull Parcel dest, @Nullable Set<Integer> set) { |
| if (set == null) { |
| dest.writeInt(0); |
| return; |
| } |
| dest.writeInt(set.size()); |
| set.stream().forEach(elem -> dest.writeInt(Objects.requireNonNull(elem))); |
| } |
| |
| static Set<Integer> createIntSet(@NonNull Parcel in) { |
| return createSet(in, new Parcelable.Creator<Integer>() { |
| public Integer createFromParcel(Parcel in) { |
| return in.readInt(); |
| } |
| |
| public Integer[] newArray(int size) { |
| return new Integer[size]; |
| } |
| }); |
| } |
| } |