1 /* 2 * Copyright (C) 2014 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.binding; 18 19 import static com.google.common.base.Preconditions.checkArgument; 20 import static dagger.internal.codegen.base.ComponentAnnotation.subcomponentAnnotations; 21 import static dagger.internal.codegen.base.ComponentCreatorAnnotation.subcomponentCreatorAnnotations; 22 import static dagger.internal.codegen.extension.DaggerStreams.toImmutableSet; 23 import static dagger.internal.codegen.xprocessing.XElements.hasAnyAnnotation; 24 25 import androidx.room.compiler.processing.XElement; 26 import androidx.room.compiler.processing.XTypeElement; 27 import com.google.common.collect.ImmutableSet; 28 import com.squareup.javapoet.ClassName; 29 import dagger.Component; 30 import dagger.Module; 31 import java.util.Optional; 32 33 /** 34 * Utility methods related to dagger configuration annotations (e.g.: {@link Component} and {@link 35 * Module}). 36 */ 37 public final class ConfigurationAnnotations { 38 getSubcomponentCreator(XTypeElement subcomponent)39 public static Optional<XTypeElement> getSubcomponentCreator(XTypeElement subcomponent) { 40 checkArgument(subcomponent.hasAnyAnnotation(subcomponentAnnotations())); 41 return subcomponent.getEnclosedTypeElements().stream() 42 .filter(ConfigurationAnnotations::isSubcomponentCreator) 43 // TODO(bcorso): Consider doing toOptional() instead since there should be at most 1. 44 .findFirst(); 45 } 46 isSubcomponentCreator(XElement element)47 static boolean isSubcomponentCreator(XElement element) { 48 return hasAnyAnnotation(element, subcomponentCreatorAnnotations()); 49 } 50 51 /** Returns the enclosed types annotated with the given annotation. */ enclosedAnnotatedTypes( XTypeElement typeElement, ImmutableSet<ClassName> annotations)52 public static ImmutableSet<XTypeElement> enclosedAnnotatedTypes( 53 XTypeElement typeElement, ImmutableSet<ClassName> annotations) { 54 return typeElement.getEnclosedTypeElements().stream() 55 .filter(enclosedType -> hasAnyAnnotation(enclosedType, annotations)) 56 .collect(toImmutableSet()); 57 } 58 ConfigurationAnnotations()59 private ConfigurationAnnotations() {} 60 } 61