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