1 /*
2  * Copyright (C) 2020 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.util.kotlin
18 
19 import java.util.Optional
20 
21 /**
22  * If [value] is not null, then returns block(value). Otherwise returns null.
23  */
24 inline fun <T : Any, R> transform(value: T?, block: (T) -> R): R? = value?.let(block)
25 
26 /**
27  * Assists type-checking to unpack a Java Optional into T?
28  */
29 @Suppress("NOTHING_TO_INLINE")
30 inline fun <T> Optional<T>.getOrNull(): T? = orElse(null)
31