101 lines
3.7 KiB
Java
101 lines
3.7 KiB
Java
/*
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* Copyright (C) 2014 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.base;
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import static com.google.common.collect.Sets.immutableEnumSet;
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import static dagger.internal.codegen.extension.DaggerStreams.stream;
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import static dagger.internal.codegen.extension.DaggerStreams.toImmutableSet;
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import static dagger.internal.codegen.extension.DaggerStreams.valuesOf;
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import static java.util.EnumSet.allOf;
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import androidx.room.compiler.processing.XTypeElement;
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import com.google.common.collect.ImmutableSet;
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import com.squareup.javapoet.ClassName;
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import dagger.internal.codegen.javapoet.TypeNames;
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import java.util.Optional;
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/** Enumeration of the different kinds of components. */
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public enum ComponentKind {
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COMPONENT(TypeNames.COMPONENT),
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SUBCOMPONENT(TypeNames.SUBCOMPONENT),
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PRODUCTION_COMPONENT(TypeNames.PRODUCTION_COMPONENT),
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PRODUCTION_SUBCOMPONENT(TypeNames.PRODUCTION_SUBCOMPONENT),
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MODULE(TypeNames.MODULE),
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PRODUCER_MODULE(TypeNames.PRODUCER_MODULE);
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private static final ImmutableSet<ComponentKind> PRODUCER_KINDS =
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ImmutableSet.of(PRODUCTION_COMPONENT, PRODUCTION_SUBCOMPONENT, PRODUCER_MODULE);
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/** Returns the annotations for components of the given kinds. */
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public static ImmutableSet<ClassName> annotationsFor(Iterable<ComponentKind> kinds) {
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return stream(kinds).map(ComponentKind::annotation).collect(toImmutableSet());
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}
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/** Returns the set of component kinds the given {@code element} has annotations for. */
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public static ImmutableSet<ComponentKind> getComponentKinds(XTypeElement element) {
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return valuesOf(ComponentKind.class)
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.filter(kind -> element.hasAnnotation(kind.annotation()))
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.collect(toImmutableSet());
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}
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/**
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* Returns the kind of an annotated element if it is annotated with one of the {@linkplain
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* #annotation() annotations}.
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*
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* @throws IllegalArgumentException if the element is annotated with more than one of the
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* annotations
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*/
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public static Optional<ComponentKind> forAnnotatedElement(XTypeElement element) {
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ImmutableSet<ComponentKind> kinds = getComponentKinds(element);
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if (kinds.size() > 1) {
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throw new IllegalArgumentException(
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element + " cannot be annotated with more than one of " + annotationsFor(kinds));
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}
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return kinds.stream().findAny();
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}
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private final ClassName annotation;
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ComponentKind(ClassName annotation) {
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this.annotation = annotation;
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}
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/** Returns the annotation that marks a component of this kind. */
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public ClassName annotation() {
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return annotation;
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}
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/** Returns the kinds of modules that can be used with a component of this kind. */
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public ImmutableSet<ModuleKind> legalModuleKinds() {
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return isProducer()
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? immutableEnumSet(allOf(ModuleKind.class))
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: immutableEnumSet(ModuleKind.MODULE);
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}
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/** Returns the kinds of subcomponents a component of this kind can have. */
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public ImmutableSet<ComponentKind> legalSubcomponentKinds() {
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return isProducer()
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? immutableEnumSet(PRODUCTION_SUBCOMPONENT)
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: immutableEnumSet(SUBCOMPONENT, PRODUCTION_SUBCOMPONENT);
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}
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/** Returns true if this is a production component. */
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public boolean isProducer() {
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return PRODUCER_KINDS.contains(this);
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}
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}
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