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