unplugged-system/external/dagger2/java/dagger/internal/codegen/writing/MembersInjectionRequestRepresentation.java

87 lines
3.4 KiB
Java

/*
* 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.writing;
import static androidx.room.compiler.processing.XTypeKt.isVoid;
import static androidx.room.compiler.processing.compat.XConverters.toJavac;
import static com.google.common.collect.Iterables.getOnlyElement;
import androidx.room.compiler.processing.XMethodElement;
import com.squareup.javapoet.ClassName;
import com.squareup.javapoet.CodeBlock;
import com.squareup.javapoet.ParameterSpec;
import dagger.assisted.Assisted;
import dagger.assisted.AssistedFactory;
import dagger.assisted.AssistedInject;
import dagger.internal.codegen.binding.ComponentDescriptor.ComponentMethodDescriptor;
import dagger.internal.codegen.binding.MembersInjectionBinding;
import dagger.internal.codegen.javapoet.Expression;
/**
* A binding expression for members injection component methods. See {@link
* MembersInjectionMethods}.
*/
final class MembersInjectionRequestRepresentation extends RequestRepresentation {
private final MembersInjectionBinding binding;
private final MembersInjectionMethods membersInjectionMethods;
@AssistedInject
MembersInjectionRequestRepresentation(
@Assisted MembersInjectionBinding binding, MembersInjectionMethods membersInjectionMethods) {
this.binding = binding;
this.membersInjectionMethods = membersInjectionMethods;
}
@Override
Expression getDependencyExpression(ClassName requestingClass) {
throw new UnsupportedOperationException(binding.toString());
}
// TODO(ronshapiro): This class doesn't need to be a RequestRepresentation, 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) {
XMethodElement methodElement = componentMethod.methodElement();
ParameterSpec parameter =
ParameterSpec.get(toJavac(getOnlyElement(methodElement.getParameters())));
if (binding.injectionSites().isEmpty()) {
return isVoid(methodElement.getReturnType())
? CodeBlock.of("")
: CodeBlock.of("return $N;", parameter);
} else {
ClassName requestingClass = component.name();
return isVoid(methodElement.getReturnType())
? CodeBlock.of("$L;", membersInjectionInvocation(parameter, requestingClass).codeBlock())
: CodeBlock.of(
"return $L;", membersInjectionInvocation(parameter, requestingClass).codeBlock());
}
}
private Expression membersInjectionInvocation(ParameterSpec target, ClassName requestingClass) {
return membersInjectionMethods.getInjectExpression(
binding.key(), CodeBlock.of("$N", target), requestingClass);
}
@AssistedFactory
static interface Factory {
MembersInjectionRequestRepresentation create(MembersInjectionBinding binding);
}
}