| /* |
| * Copyright 2019 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.view.inspector; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| |
| /** |
| * An inspection companion provider that finds companions as inner classes or generated code. |
| * |
| * @see android.processor.view.inspector.PlatformInspectableProcessor |
| */ |
| public class StaticInspectionCompanionProvider implements InspectionCompanionProvider { |
| /** |
| * The suffix used for the generated classes and inner classes |
| */ |
| private static final String COMPANION_SUFFIX = "$InspectionCompanion"; |
| |
| @Override |
| @Nullable |
| @SuppressWarnings("unchecked") |
| public <T> InspectionCompanion<T> provide(@NonNull Class<T> cls) { |
| final String companionName = cls.getName() + COMPANION_SUFFIX; |
| |
| try { |
| final Class<InspectionCompanion<T>> companionClass = |
| (Class<InspectionCompanion<T>>) cls.getClassLoader().loadClass(companionName); |
| |
| if (InspectionCompanion.class.isAssignableFrom(companionClass)) { |
| return companionClass.newInstance(); |
| } else { |
| return null; |
| } |
| } catch (ClassNotFoundException e) { |
| return null; |
| } catch (IllegalAccessException e) { |
| throw new RuntimeException(e); |
| } catch (InstantiationException e) { |
| Throwable cause = e.getCause(); |
| if (cause instanceof RuntimeException) throw (RuntimeException) cause; |
| if (cause instanceof Error) throw (Error) cause; |
| throw new RuntimeException(cause); |
| } |
| } |
| } |