1 /* <lambda>null2 * Copyright (C) 2024 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 com.android.systemui.kairos.internal.util 18 19 import java.util.concurrent.ConcurrentHashMap 20 21 internal class ConcurrentNullableHashMap<K : Any, V> 22 private constructor(private val inner: ConcurrentHashMap<K, Any>) { 23 constructor() : this(ConcurrentHashMap()) 24 25 @Suppress("UNCHECKED_CAST") 26 operator fun get(key: K): V? = inner[key]?.takeIf { it !== NullValue } as V? 27 28 @Suppress("UNCHECKED_CAST") 29 fun put(key: K, value: V?): V? = 30 inner.put(key, value ?: NullValue)?.takeIf { it !== NullValue } as V? 31 32 operator fun set(key: K, value: V?) { 33 put(key, value) 34 } 35 36 @Suppress("UNCHECKED_CAST") 37 fun toMap(): Map<K, V> = inner.mapValues { (_, v) -> v.takeIf { it !== NullValue } as V } 38 39 fun clear() { 40 inner.clear() 41 } 42 43 fun isNotEmpty(): Boolean = inner.isNotEmpty() 44 } 45 46 private object NullValue 47