| /* |
| * Copyright (C) 2017 The Dagger Authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package dagger.internal.codegen; |
| |
| import static com.google.common.collect.Iterables.getOnlyElement; |
| import static javax.lang.model.type.TypeKind.VOID; |
| |
| import com.squareup.javapoet.ClassName; |
| import com.squareup.javapoet.CodeBlock; |
| import com.squareup.javapoet.ParameterSpec; |
| import dagger.internal.codegen.ComponentDescriptor.ComponentMethodDescriptor; |
| import dagger.internal.codegen.javapoet.Expression; |
| import javax.lang.model.element.ExecutableElement; |
| |
| /** |
| * A binding expression for members injection component methods. See {@link |
| * MembersInjectionMethods}. |
| */ |
| final class MembersInjectionBindingExpression extends BindingExpression { |
| private final MembersInjectionBinding binding; |
| private final MembersInjectionMethods membersInjectionMethods; |
| |
| MembersInjectionBindingExpression( |
| ResolvedBindings resolvedBindings, MembersInjectionMethods membersInjectionMethods) { |
| this.binding = resolvedBindings.membersInjectionBinding().get(); |
| this.membersInjectionMethods = membersInjectionMethods; |
| } |
| |
| @Override |
| Expression getDependencyExpression(ClassName requestingClass) { |
| throw new UnsupportedOperationException(binding.toString()); |
| } |
| |
| // TODO(ronshapiro): This class doesn't need to be a BindingExpression, as |
| // getDependencyExpression() should never be called for members injection methods. It's probably |
| // better suited as a method on MembersInjectionMethods |
| @Override |
| protected CodeBlock getComponentMethodImplementation( |
| ComponentMethodDescriptor componentMethod, ComponentImplementation component) { |
| ExecutableElement methodElement = componentMethod.methodElement(); |
| ParameterSpec parameter = ParameterSpec.get(getOnlyElement(methodElement.getParameters())); |
| |
| if (binding.injectionSites().isEmpty()) { |
| return methodElement.getReturnType().getKind().equals(VOID) |
| ? CodeBlock.of("") |
| : CodeBlock.of("return $N;", parameter); |
| } else { |
| return methodElement.getReturnType().getKind().equals(VOID) |
| ? CodeBlock.of("$L;", membersInjectionInvocation(parameter)) |
| : CodeBlock.of("return $L;", membersInjectionInvocation(parameter)); |
| } |
| } |
| |
| CodeBlock membersInjectionInvocation(ParameterSpec target) { |
| return CodeBlock.of("$N($N)", membersInjectionMethods.getOrCreate(binding.key()), target); |
| } |
| } |