| /* |
| * Copyright (C) 2017 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 com.android.car; |
| |
| import static com.android.car.internal.ExcludeFromCodeCoverageGeneratedReport.BOILERPLATE_CODE; |
| |
| import android.util.Pair; |
| import android.util.SparseArray; |
| |
| import com.android.car.internal.ExcludeFromCodeCoverageGeneratedReport; |
| |
| import java.util.stream.IntStream; |
| import java.util.stream.Stream; |
| |
| /** |
| * Helper class that provides Stream abstractions for android.util.SparseArray |
| */ |
| public class SparseArrayStream { |
| public static <E> IntStream keyStream(SparseArray<E> array) { |
| return IntStream.range(0, array.size()).map(array::keyAt); |
| } |
| |
| public static <E> Stream<E> valueStream(SparseArray<E> array) { |
| return IntStream.range(0, array.size()).mapToObj(array::valueAt); |
| } |
| |
| public static <E> Stream<Pair<Integer, E>> pairStream(SparseArray<E> array) { |
| return IntStream.range(0, array.size()).mapToObj( |
| i -> new Pair<>(array.keyAt(i), array.valueAt(i))); |
| } |
| |
| @ExcludeFromCodeCoverageGeneratedReport(reason = BOILERPLATE_CODE, |
| details = "private constructor") |
| private SparseArrayStream() { |
| throw new UnsupportedOperationException("contains only static methods"); |
| } |
| } |