1 /* 2 * Copyright (C) 2020 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.aliasof; 18 19 import static dagger.internal.codegen.extension.DaggerStreams.toImmutableSet; 20 21 import com.google.common.collect.ImmutableSet; 22 import com.google.common.collect.ImmutableSetMultimap; 23 import com.squareup.javapoet.ClassName; 24 import dagger.hilt.processor.internal.ComponentDescriptor; 25 import dagger.hilt.processor.internal.ProcessorErrors; 26 27 /** 28 * Extracts a multimap of aliases annotated with {@link dagger.hilt.migration.AliasOf} mapping them 29 * to scopes they are alias of. 30 */ 31 public final class AliasOfs { create( ImmutableSet<AliasOfPropagatedDataMetadata> metadatas, ImmutableSet<ComponentDescriptor> componentDescriptors)32 public static AliasOfs create( 33 ImmutableSet<AliasOfPropagatedDataMetadata> metadatas, 34 ImmutableSet<ComponentDescriptor> componentDescriptors) { 35 ImmutableSet<ClassName> defineComponentScopes = 36 componentDescriptors.stream() 37 .flatMap(descriptor -> descriptor.scopes().stream()) 38 .collect(toImmutableSet()); 39 40 ImmutableSetMultimap.Builder<ClassName, ClassName> builder = ImmutableSetMultimap.builder(); 41 metadatas.forEach( 42 metadata -> { 43 ClassName aliasScopeName = metadata.aliasElement().getClassName(); 44 metadata 45 .defineComponentScopeElements() 46 .forEach( 47 defineComponentScope -> { 48 ClassName defineComponentScopeName = defineComponentScope.getClassName(); 49 ProcessorErrors.checkState( 50 defineComponentScopes.contains(defineComponentScopeName), 51 metadata.aliasElement(), 52 "The scope %s cannot be an alias for %s. You can only have aliases of a" 53 + " scope defined directly on a @DefineComponent type.", 54 aliasScopeName, 55 defineComponentScopeName); 56 builder.put(defineComponentScopeName, aliasScopeName); 57 }); 58 }); 59 return new AliasOfs(builder.build()); 60 } 61 62 private final ImmutableSetMultimap<ClassName, ClassName> defineComponentScopeToAliases; 63 AliasOfs(ImmutableSetMultimap<ClassName, ClassName> defineComponentScopeToAliases)64 private AliasOfs(ImmutableSetMultimap<ClassName, ClassName> defineComponentScopeToAliases) { 65 this.defineComponentScopeToAliases = defineComponentScopeToAliases; 66 } 67 getAliasesFor(ClassName defineComponentScope)68 public ImmutableSet<ClassName> getAliasesFor(ClassName defineComponentScope) { 69 return defineComponentScopeToAliases.get(defineComponentScope); 70 } 71 } 72