Ashley Rose | a4850c4 | 2019-01-29 18:40:22 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2019 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 android.view.inspector; |
| 18 | |
| 19 | import android.annotation.NonNull; |
| 20 | import android.annotation.Nullable; |
| 21 | |
| 22 | /** |
| 23 | * An inspection companion provider that loads pre-generated inspection companions |
| 24 | * |
| 25 | * @see android.processor.view.inspector.PlatformInspectableProcessor |
| 26 | */ |
| 27 | public class GeneratedInspectionCompanionProvider implements InspectionCompanionProvider { |
| 28 | /** |
| 29 | * The suffix used for the generated class |
| 30 | */ |
| 31 | private static final String COMPANION_SUFFIX = "$$InspectionCompanion"; |
| 32 | |
| 33 | @Override |
| 34 | @Nullable |
| 35 | @SuppressWarnings("unchecked") |
| 36 | public <T> InspectionCompanion<T> provide(@NonNull Class<T> cls) { |
| 37 | final String companionName = cls.getName() + COMPANION_SUFFIX; |
| 38 | |
| 39 | try { |
| 40 | final Class<InspectionCompanion<T>> companionClass = |
| 41 | (Class<InspectionCompanion<T>>) cls.getClassLoader().loadClass(companionName); |
| 42 | return companionClass.newInstance(); |
Ashley Rose | c74a113 | 2019-02-22 18:19:59 -0500 | [diff] [blame] | 43 | } catch (ClassNotFoundException e) { |
Ashley Rose | a4850c4 | 2019-01-29 18:40:22 -0500 | [diff] [blame] | 44 | return null; |
Ashley Rose | c74a113 | 2019-02-22 18:19:59 -0500 | [diff] [blame] | 45 | } catch (IllegalAccessException e) { |
| 46 | throw new RuntimeException(e); |
| 47 | } catch (InstantiationException e) { |
| 48 | Throwable cause = e.getCause(); |
| 49 | if (cause instanceof RuntimeException) throw (RuntimeException) cause; |
| 50 | if (cause instanceof Error) throw (Error) cause; |
| 51 | throw new RuntimeException(cause); |
Ashley Rose | a4850c4 | 2019-01-29 18:40:22 -0500 | [diff] [blame] | 52 | } |
| 53 | } |
| 54 | } |