1 /*
2  * Copyright 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 androidx.lifecycle.viewmodel.internal
18 
19 import androidx.lifecycle.ViewModel
20 
21 /**
22  * [JvmViewModelProviders] provides common helper functionalities.
23  *
24  * Kotlin Multiplatform does not support expect class with default implementation yet, so we
25  * extracted the common logic used by all platforms to this internal class.
26  *
27  * @see <a href="https://youtrack.jetbrains.com/issue/KT-20427">KT-20427</a>
28  */
29 internal object JvmViewModelProviders {
30 
31     /**
32      * Creates a new [ViewModel] instance using the no-args constructor if available, otherwise
33      * throws a [RuntimeException].
34      */
35     @Suppress("DocumentExceptions")
createViewModelnull36     fun <T : ViewModel> createViewModel(modelClass: Class<T>): T =
37         try {
38             modelClass.getDeclaredConstructor().newInstance()
39         } catch (e: NoSuchMethodException) {
40             throw RuntimeException("Cannot create an instance of $modelClass", e)
41         } catch (e: InstantiationException) {
42             throw RuntimeException("Cannot create an instance of $modelClass", e)
43         } catch (e: IllegalAccessException) {
44             throw RuntimeException("Cannot create an instance of $modelClass", e)
45         }
46 }
47