1 /* 2 * Copyright (C) 2015 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 static com.google.common.base.Preconditions.checkNotNull; 20 import static dagger.internal.codegen.binding.BindingRequest.bindingRequest; 21 import static dagger.internal.codegen.javapoet.CodeBlocks.anonymousProvider; 22 import static dagger.internal.codegen.model.RequestKind.INSTANCE; 23 24 import com.squareup.javapoet.ClassName; 25 import com.squareup.javapoet.CodeBlock; 26 import dagger.assisted.Assisted; 27 import dagger.assisted.AssistedFactory; 28 import dagger.assisted.AssistedInject; 29 import dagger.internal.codegen.binding.BindingRequest; 30 import dagger.internal.codegen.binding.ContributionBinding; 31 import dagger.internal.codegen.javapoet.Expression; 32 import dagger.internal.codegen.writing.FrameworkFieldInitializer.FrameworkInstanceCreationExpression; 33 34 /** 35 * A {@link javax.inject.Provider} creation expression for an anonymous inner class whose 36 * {@code get()} method returns the expression for an instance binding request for its key. 37 */ 38 final class AnonymousProviderCreationExpression 39 implements FrameworkInstanceCreationExpression { 40 private final ContributionBinding binding; 41 private final ComponentRequestRepresentations componentRequestRepresentations; 42 private final ClassName requestingClass; 43 44 @AssistedInject AnonymousProviderCreationExpression( @ssisted ContributionBinding binding, ComponentRequestRepresentations componentRequestRepresentations, ComponentImplementation componentImplementation)45 AnonymousProviderCreationExpression( 46 @Assisted ContributionBinding binding, 47 ComponentRequestRepresentations componentRequestRepresentations, 48 ComponentImplementation componentImplementation) { 49 this.binding = checkNotNull(binding); 50 this.componentRequestRepresentations = componentRequestRepresentations; 51 this.requestingClass = componentImplementation.name(); 52 } 53 54 @Override creationExpression()55 public CodeBlock creationExpression() { 56 BindingRequest instanceExpressionRequest = bindingRequest(binding.key(), INSTANCE); 57 Expression instanceExpression = 58 componentRequestRepresentations.getDependencyExpression( 59 instanceExpressionRequest, 60 // Not a real class name, but the actual requestingClass is an inner class within the 61 // given class, not that class itself. 62 requestingClass.nestedClass("Anonymous")); 63 return anonymousProvider(instanceExpression); 64 } 65 66 @AssistedFactory 67 static interface Factory { create(ContributionBinding binding)68 AnonymousProviderCreationExpression create(ContributionBinding binding); 69 } 70 } 71