1 /* 2 * Copyright (C) 2017 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.writing; 18 19 import com.squareup.javapoet.ClassName; 20 import com.squareup.javapoet.CodeBlock; 21 import dagger.assisted.Assisted; 22 import dagger.assisted.AssistedFactory; 23 import dagger.assisted.AssistedInject; 24 import dagger.internal.codegen.binding.ComponentBinding; 25 import dagger.internal.codegen.javapoet.Expression; 26 27 /** A binding expression for the instance of the component itself, i.e. {@code this}. */ 28 final class ComponentInstanceRequestRepresentation extends RequestRepresentation { 29 private final ComponentImplementation componentImplementation; 30 private final ComponentBinding binding; 31 32 @AssistedInject ComponentInstanceRequestRepresentation( @ssisted ComponentBinding binding, ComponentImplementation componentImplementation)33 ComponentInstanceRequestRepresentation( 34 @Assisted ComponentBinding binding, ComponentImplementation componentImplementation) { 35 this.componentImplementation = componentImplementation; 36 this.binding = binding; 37 } 38 39 @Override getDependencyExpression(ClassName requestingClass)40 Expression getDependencyExpression(ClassName requestingClass) { 41 return Expression.create( 42 binding.key().type().xprocessing(), 43 componentImplementation.name().equals(requestingClass) 44 ? CodeBlock.of("this") 45 : componentImplementation.componentFieldReference()); 46 } 47 48 @AssistedFactory 49 static interface Factory { create(ComponentBinding binding)50 ComponentInstanceRequestRepresentation create(ComponentBinding binding); 51 } 52 } 53