106 lines
3.7 KiB
Java
106 lines
3.7 KiB
Java
/*
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* Copyright (C) 2016 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.validation;
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import static dagger.internal.codegen.base.FrameworkTypes.isFrameworkType;
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import static dagger.internal.codegen.validation.BindingElementValidator.AllowsMultibindings.NO_MULTIBINDINGS;
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import static dagger.internal.codegen.validation.BindingElementValidator.AllowsScoping.NO_SCOPING;
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import static dagger.internal.codegen.validation.BindingMethodValidator.Abstractness.MUST_BE_ABSTRACT;
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import static dagger.internal.codegen.validation.BindingMethodValidator.ExceptionSuperclass.NO_EXCEPTIONS;
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import static dagger.internal.codegen.xprocessing.XTypes.isWildcard;
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import androidx.room.compiler.processing.XMethodElement;
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import androidx.room.compiler.processing.XType;
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import com.google.common.collect.ImmutableSet;
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import dagger.internal.codegen.base.MapType;
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import dagger.internal.codegen.base.SetType;
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import dagger.internal.codegen.binding.InjectionAnnotations;
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import dagger.internal.codegen.javapoet.TypeNames;
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import dagger.internal.codegen.langmodel.DaggerTypes;
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import javax.inject.Inject;
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/** A validator for {@link dagger.multibindings.Multibinds} methods. */
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class MultibindsMethodValidator extends BindingMethodValidator {
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/** Creates a validator for {@link dagger.multibindings.Multibinds @Multibinds} methods. */
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@Inject
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MultibindsMethodValidator(
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DaggerTypes types,
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DependencyRequestValidator dependencyRequestValidator,
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InjectionAnnotations injectionAnnotations) {
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super(
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types,
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TypeNames.MULTIBINDS,
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ImmutableSet.of(TypeNames.MODULE, TypeNames.PRODUCER_MODULE),
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dependencyRequestValidator,
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MUST_BE_ABSTRACT,
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NO_EXCEPTIONS,
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NO_MULTIBINDINGS,
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NO_SCOPING,
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injectionAnnotations);
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}
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@Override
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protected ElementValidator elementValidator(XMethodElement method) {
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return new Validator(method);
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}
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private class Validator extends MethodValidator {
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private final XMethodElement method;
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Validator(XMethodElement method) {
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super(method);
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this.method = method;
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}
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@Override
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protected void checkParameters() {
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if (!method.getParameters().isEmpty()) {
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report.addError(bindingMethods("cannot have parameters"));
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}
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}
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/** Adds an error unless the method returns a {@code Map<K, V>} or {@code Set<T>}. */
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@Override
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protected void checkType() {
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if (!isPlainMap(method.getReturnType()) && !isPlainSet(method.getReturnType())) {
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report.addError(bindingMethods("must return Map<K, V> or Set<T>"));
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}
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}
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private boolean isPlainMap(XType returnType) {
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if (!MapType.isMap(returnType)) {
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return false;
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}
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MapType mapType = MapType.from(returnType);
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return !mapType.isRawType()
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&& !isWildcard(mapType.valueType())
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&& !isFrameworkType(mapType.valueType());
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}
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private boolean isPlainSet(XType returnType) {
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if (!SetType.isSet(returnType)) {
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return false;
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}
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SetType setType = SetType.from(returnType);
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return !setType.isRawType()
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&& !isWildcard(setType.elementType())
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&& !isFrameworkType(setType.elementType());
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}
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}
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}
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