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; 18 19 import static com.google.common.base.Preconditions.checkNotNull; 20 import static dagger.internal.codegen.BindingRequest.bindingRequest; 21 22 import com.squareup.javapoet.ClassName; 23 import com.squareup.javapoet.CodeBlock; 24 import dagger.internal.codegen.FrameworkFieldInitializer.FrameworkInstanceCreationExpression; 25 import dagger.internal.codegen.javapoet.TypeNames; 26 import dagger.model.RequestKind; 27 import dagger.producers.Producer; 28 import java.util.Optional; 29 30 /** An {@link Producer} creation expression for provision bindings. */ 31 final class ProducerFromProviderCreationExpression implements FrameworkInstanceCreationExpression { 32 private final ContributionBinding binding; 33 private final ComponentImplementation componentImplementation; 34 private final ComponentBindingExpressions componentBindingExpressions; 35 ProducerFromProviderCreationExpression( ContributionBinding binding, ComponentImplementation componentImplementation, ComponentBindingExpressions componentBindingExpressions)36 ProducerFromProviderCreationExpression( 37 ContributionBinding binding, 38 ComponentImplementation componentImplementation, 39 ComponentBindingExpressions componentBindingExpressions) { 40 this.binding = checkNotNull(binding); 41 this.componentImplementation = checkNotNull(componentImplementation); 42 this.componentBindingExpressions = checkNotNull(componentBindingExpressions); 43 } 44 45 @Override creationExpression()46 public CodeBlock creationExpression() { 47 return FrameworkType.PROVIDER.to( 48 RequestKind.PRODUCER, 49 componentBindingExpressions 50 .getDependencyExpression( 51 bindingRequest(binding.key(), FrameworkType.PROVIDER), 52 componentImplementation.name()) 53 .codeBlock()); 54 } 55 56 @Override alternativeFrameworkClass()57 public Optional<ClassName> alternativeFrameworkClass() { 58 return Optional.of(TypeNames.PRODUCER); 59 } 60 61 // TODO(ronshapiro): should this have a simple factory if the delegate expression is simple? 62 } 63