1 /* 2 * Copyright (C) 2018 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 com.squareup.javapoet.MethodSpec.constructorBuilder; 20 import static com.squareup.javapoet.TypeSpec.classBuilder; 21 import static javax.lang.model.element.Modifier.FINAL; 22 import static javax.lang.model.element.Modifier.PRIVATE; 23 import static javax.lang.model.element.Modifier.PUBLIC; 24 25 import com.squareup.javapoet.ClassName; 26 import com.squareup.javapoet.TypeSpec; 27 import dagger.internal.codegen.langmodel.DaggerElements; 28 import dagger.internal.codegen.langmodel.DaggerTypes; 29 import java.util.Optional; 30 import javax.annotation.processing.Filer; 31 import javax.inject.Inject; 32 import javax.lang.model.SourceVersion; 33 import javax.lang.model.element.Element; 34 35 /** 36 * Generates a class that exposes a non-{@code public} {@link 37 * ContributionBinding#mapKeyAnnotation()} @MapKey} annotation. 38 */ 39 final class InaccessibleMapKeyProxyGenerator extends SourceFileGenerator<ContributionBinding> { 40 private final DaggerTypes types; 41 private final DaggerElements elements; 42 43 @Inject InaccessibleMapKeyProxyGenerator( Filer filer, DaggerTypes types, DaggerElements elements, SourceVersion sourceVersion)44 InaccessibleMapKeyProxyGenerator( 45 Filer filer, DaggerTypes types, DaggerElements elements, SourceVersion sourceVersion) { 46 super(filer, elements, sourceVersion); 47 this.types = types; 48 this.elements = elements; 49 } 50 51 @Override nameGeneratedType(ContributionBinding binding)52 ClassName nameGeneratedType(ContributionBinding binding) { 53 return MapKeys.mapKeyProxyClassName(binding); 54 } 55 56 @Override originatingElement(ContributionBinding binding)57 Element originatingElement(ContributionBinding binding) { 58 // a map key is only ever present on bindings that have a binding element 59 return binding.bindingElement().get(); 60 } 61 62 @Override write(ClassName generatedName, ContributionBinding binding)63 Optional<TypeSpec.Builder> write(ClassName generatedName, ContributionBinding binding) { 64 return MapKeys.mapKeyFactoryMethod(binding, types, elements) 65 .map( 66 method -> 67 classBuilder(generatedName) 68 .addModifiers(PUBLIC, FINAL) 69 .addMethod(constructorBuilder().addModifiers(PRIVATE).build()) 70 .addMethod(method)); 71 } 72 } 73