dagger.internal.codegen.writing.AssistedInjectionParameters Maven / Gradle / Ivy
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/*
* 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 com.google.common.base.Preconditions.checkArgument;
import static dagger.internal.codegen.extension.DaggerStreams.toImmutableList;
import static dagger.internal.codegen.xprocessing.XElements.asConstructor;
import static dagger.internal.codegen.xprocessing.XElements.asTypeElement;
import androidx.room.compiler.codegen.XParameterSpec;
import androidx.room.compiler.processing.XConstructorElement;
import androidx.room.compiler.processing.XConstructorType;
import androidx.room.compiler.processing.XExecutableParameterElement;
import androidx.room.compiler.processing.XMethodType;
import androidx.room.compiler.processing.XType;
import androidx.room.compiler.processing.XTypeElement;
import com.google.common.collect.ImmutableList;
import dagger.internal.codegen.binding.AssistedInjectionAnnotations;
import dagger.internal.codegen.binding.AssistedInjectionAnnotations.AssistedFactoryMetadata;
import dagger.internal.codegen.binding.Binding;
import dagger.internal.codegen.model.BindingKind;
import dagger.internal.codegen.writing.ComponentImplementation.ShardImplementation;
import dagger.internal.codegen.xprocessing.XParameterSpecs;
import java.util.List;
/** Utility class for generating unique assisted parameter names for a component shard. */
final class AssistedInjectionParameters {
/**
* Returns the list of assisted factory parameters as {@link XParameterSpec}s.
*
* The type of each parameter will be the resolved type given by the binding key, and the name
* of each parameter will be the name given in the {@link
* dagger.assisted.AssistedInject}-annotated constructor.
*/
public static ImmutableList assistedFactoryParameterSpecs(
Binding binding, ShardImplementation shardImplementation) {
checkArgument(binding.kind() == BindingKind.ASSISTED_FACTORY);
XTypeElement factory = asTypeElement(binding.bindingElement().get());
AssistedFactoryMetadata metadata = AssistedFactoryMetadata.create(factory.getType());
XMethodType factoryMethodType =
metadata.factoryMethod().asMemberOf(binding.key().type().xprocessing());
return assistedParameterSpecs(
// Use the order of the parameters from the @AssistedFactory method but use the parameter
// names of the @AssistedInject constructor.
metadata.assistedFactoryAssistedParameters().stream()
.map(metadata.assistedInjectAssistedParametersMap()::get)
.collect(toImmutableList()),
factoryMethodType.getParameterTypes(),
shardImplementation);
}
/**
* Returns the list of assisted parameters as {@link XParameterSpec}s.
*
* The type of each parameter will be the resolved type given by the binding key, and the name
* of each parameter will be the name given in the {@link
* dagger.assisted.AssistedInject}-annotated constructor.
*/
public static ImmutableList assistedParameterSpecs(
Binding binding, ShardImplementation shardImplementation) {
checkArgument(binding.kind() == BindingKind.ASSISTED_INJECTION);
XConstructorElement constructor = asConstructor(binding.bindingElement().get());
XConstructorType constructorType = constructor.asMemberOf(binding.key().type().xprocessing());
return assistedParameterSpecs(
constructor.getParameters(), constructorType.getParameterTypes(), shardImplementation);
}
private static ImmutableList assistedParameterSpecs(
List paramElements,
List paramTypes,
ShardImplementation shardImplementation) {
ImmutableList.Builder assistedParameterSpecs = ImmutableList.builder();
for (int i = 0; i < paramElements.size(); i++) {
XExecutableParameterElement paramElement = paramElements.get(i);
XType paramType = paramTypes.get(i);
if (AssistedInjectionAnnotations.isAssistedParameter(paramElement)) {
assistedParameterSpecs.add(
XParameterSpecs.of(
shardImplementation.getUniqueFieldNameForAssistedParam(paramElement),
paramType.asTypeName()));
}
}
return assistedParameterSpecs.build();
}
private AssistedInjectionParameters() {}
}