1 /* 2 * Copyright (C) 2021 The Dagger Authors. 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 dagger.internal.codegen; 18 19 import static androidx.room.compiler.processing.compat.XConverters.toJavac; 20 21 import androidx.room.compiler.processing.XProcessingEnv; 22 import com.google.common.collect.ImmutableSet; 23 import java.util.ServiceLoader; 24 import javax.annotation.processing.ProcessingEnvironment; 25 26 /** A class that loads services for the {@link ComponentProcessor}. */ 27 final class ServiceLoaders { 28 ServiceLoaders()29 private ServiceLoaders() {} 30 31 /** 32 * Returns the loaded services for the given class. 33 */ loadServices(XProcessingEnv processingEnv, Class<T> clazz)34 static <T> ImmutableSet<T> loadServices(XProcessingEnv processingEnv, Class<T> clazz) { 35 return ImmutableSet.copyOf(ServiceLoader.load(clazz, classLoaderFor(processingEnv, clazz))); 36 } 37 classLoaderFor(XProcessingEnv processingEnv, Class<?> clazz)38 private static ClassLoader classLoaderFor(XProcessingEnv processingEnv, Class<?> clazz) { 39 switch (processingEnv.getBackend()) { 40 case JAVAC: 41 return javaClassLoader(toJavac(processingEnv), clazz); 42 case KSP: 43 return clazz.getClassLoader(); 44 } 45 throw new AssertionError("Unexpected backend: " + processingEnv.getBackend()); 46 } 47 javaClassLoader( ProcessingEnvironment javacProcessingEnv, Class<?> clazz)48 private static ClassLoader javaClassLoader( 49 ProcessingEnvironment javacProcessingEnv, Class<?> clazz) { 50 return clazz.getClassLoader(); 51 } 52 } 53