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.hilt.processor.internal.root; 18 19 import static dagger.internal.codegen.extension.DaggerStreams.toImmutableSet; 20 21 import androidx.room.compiler.processing.XAnnotation; 22 import androidx.room.compiler.processing.XProcessingEnv; 23 import androidx.room.compiler.processing.XTypeElement; 24 import com.google.auto.value.AutoValue; 25 import com.google.auto.value.extension.memoized.Memoized; 26 import com.google.common.collect.ImmutableSet; 27 import dagger.hilt.processor.internal.AggregatedElements; 28 import dagger.hilt.processor.internal.ClassNames; 29 import dagger.hilt.processor.internal.root.ir.AggregatedRootIr; 30 31 /** 32 * Represents the values stored in an {@link dagger.hilt.internal.aggregatedroot.AggregatedRoot}. 33 */ 34 @AutoValue 35 abstract class AggregatedRootMetadata { 36 37 /** Returns the aggregating element */ aggregatingElement()38 public abstract XTypeElement aggregatingElement(); 39 40 /** Returns the element that was annotated with the root annotation. */ rootElement()41 abstract XTypeElement rootElement(); 42 43 /** 44 * Returns the originating root element. In most cases this will be the same as {@link 45 * #rootElement()}. 46 */ originatingRootElement()47 abstract XTypeElement originatingRootElement(); 48 49 /** Returns the root annotation as an element. */ rootAnnotation()50 abstract XTypeElement rootAnnotation(); 51 52 /** Returns whether this root can use a shared component. */ allowsSharingComponent()53 abstract boolean allowsSharingComponent(); 54 55 @Memoized rootType()56 RootType rootType() { 57 return RootType.of(rootElement()); 58 } 59 from(XProcessingEnv env)60 static ImmutableSet<AggregatedRootMetadata> from(XProcessingEnv env) { 61 return from( 62 AggregatedElements.from( 63 ClassNames.AGGREGATED_ROOT_PACKAGE, ClassNames.AGGREGATED_ROOT, env), 64 env); 65 } 66 67 /** Returns metadata for each aggregated element. */ from( ImmutableSet<XTypeElement> aggregatedElements, XProcessingEnv env)68 public static ImmutableSet<AggregatedRootMetadata> from( 69 ImmutableSet<XTypeElement> aggregatedElements, XProcessingEnv env) { 70 return aggregatedElements.stream() 71 .map(aggregatedElement -> create(aggregatedElement, env)) 72 .collect(toImmutableSet()); 73 } 74 toIr(AggregatedRootMetadata metadata)75 public static AggregatedRootIr toIr(AggregatedRootMetadata metadata) { 76 return new AggregatedRootIr( 77 metadata.aggregatingElement().getClassName(), 78 metadata.rootElement().getClassName(), 79 metadata.originatingRootElement().getClassName(), 80 metadata.rootAnnotation().getClassName(), 81 metadata.allowsSharingComponent()); 82 } 83 create(XTypeElement element, XProcessingEnv env)84 private static AggregatedRootMetadata create(XTypeElement element, XProcessingEnv env) { 85 XAnnotation annotation = element.getAnnotation(ClassNames.AGGREGATED_ROOT); 86 87 XTypeElement rootElement = env.requireTypeElement(annotation.getAsString("root")); 88 boolean allowSharingComponent = true; 89 return new AutoValue_AggregatedRootMetadata( 90 element, 91 rootElement, 92 env.requireTypeElement(annotation.getAsString("originatingRoot")), 93 annotation.getAsType("rootAnnotation").getTypeElement(), 94 allowSharingComponent); 95 } 96 } 97