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A library jar that provides APIs for Applications written for the Google Android Platform.
/*
* 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 android.os;
import android.annotation.SystemApi;
import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.stream.IntStream;
/** @hide */
@SystemApi
public class HidlSupport {
/**
* Similar to Objects.deepEquals, but also take care of lists.
* Two objects of HIDL types are considered equal if:
* 1. Both null
* 2. Both non-null, and of the same class, and:
* 2.1 Both are primitive arrays / enum arrays, elements are equal using == check
* 2.2 Both are object arrays, elements are checked recursively
* 2.3 Both are Lists, elements are checked recursively
* 2.4 (If both are collections other than lists or maps, throw an error)
* 2.5 lft.equals(rgt) returns true
* @hide
*/
@SystemApi
public static boolean deepEquals(Object lft, Object rgt) {
if (lft == rgt) {
return true;
}
if (lft == null || rgt == null) {
return false;
}
Class lftClazz = lft.getClass();
Class rgtClazz = rgt.getClass();
if (lftClazz != rgtClazz) {
return false;
}
if (lftClazz.isArray()) {
Class lftElementType = lftClazz.getComponentType();
if (lftElementType != rgtClazz.getComponentType()) {
return false;
}
if (lftElementType.isPrimitive()) {
return Objects.deepEquals(lft, rgt);
}
Object[] lftArray = (Object[])lft;
Object[] rgtArray = (Object[])rgt;
return (lftArray.length == rgtArray.length) &&
IntStream.range(0, lftArray.length).allMatch(
i -> deepEquals(lftArray[i], rgtArray[i]));
}
if (lft instanceof List) {
List