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/*
* Copyright (C) 2019 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.hilt.processor.internal.aggregateddeps;
import static com.google.auto.common.Visibility.effectiveVisibilityOfElement;
import com.google.auto.common.MoreElements;
import com.google.auto.common.Visibility;
import com.google.auto.value.AutoValue;
import com.squareup.javapoet.ClassName;
import com.squareup.javapoet.TypeName;
import dagger.hilt.processor.internal.ClassNames;
import dagger.hilt.processor.internal.KotlinMetadataUtils;
import dagger.hilt.processor.internal.Processors;
import java.util.Optional;
import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.TypeElement;
import javax.lang.model.util.Elements;
/** PkgPrivateModuleMetadata contains a set of utilities for processing package private modules. */
@AutoValue
public abstract class PkgPrivateMetadata {
/** Returns the public Hilt wrapped type or the type itself if it is already public. */
public static TypeElement publicModule(TypeElement element, Elements elements) {
return publicDep(element, elements, ClassNames.MODULE);
}
/** Returns the public Hilt wrapped type or the type itself if it is already public. */
public static TypeElement publicEarlyEntryPoint(TypeElement element, Elements elements) {
return publicDep(element, elements, ClassNames.EARLY_ENTRY_POINT);
}
private static TypeElement publicDep(
TypeElement element, Elements elements, ClassName annotation) {
return of(elements, element, annotation)
.map(PkgPrivateMetadata::generatedClassName)
.map(ClassName::canonicalName)
.map(elements::getTypeElement)
.orElse(element);
}
private static final String PREFIX = "HiltWrapper_";
/** Returns the base class name of the elemenet. */
TypeName baseClassName() {
return TypeName.get(getTypeElement().asType());
}
/** Returns TypeElement for the module element the metadata object represents */
abstract TypeElement getTypeElement();
/**
* Returns an optional @InstallIn AnnotationMirror for the module element the metadata object
* represents
*/
abstract Optional<AnnotationMirror> getOptionalInstallInAnnotationMirror();
/** Return the Type of this package private element. */
abstract ClassName getAnnotation();
/** Returns the expected genenerated classname for the element the metadata object represents */
final ClassName generatedClassName() {
return Processors.prepend(
Processors.getEnclosedClassName(ClassName.get(getTypeElement())), PREFIX);
}
/**
* Returns an Optional PkgPrivateMetadata requiring Hilt processing, otherwise returns an empty
* Optional.
*/
static Optional<PkgPrivateMetadata> of(
Elements elements, TypeElement element, ClassName annotation) {
// If this is a public element no wrapping is needed
if (effectiveVisibilityOfElement(element) == Visibility.PUBLIC
&& !KotlinMetadataUtils.getMetadataUtil().isVisibilityInternal(element)) {
return Optional.empty();
}
Optional<AnnotationMirror> installIn;
if (Processors.hasAnnotation(element, ClassNames.INSTALL_IN)) {
installIn = Optional.of(Processors.getAnnotationMirror(element, ClassNames.INSTALL_IN));
} else if (Processors.hasAnnotation(element, ClassNames.TEST_INSTALL_IN)) {
installIn = Optional.of(Processors.getAnnotationMirror(element, ClassNames.TEST_INSTALL_IN));
} else {
throw new IllegalStateException(
"Expected element to be annotated with @InstallIn: " + element);
}
if (annotation.equals(ClassNames.MODULE)
) {
// Skip modules that require a module instance. Required by
// dagger (b/31489617)
if (Processors.requiresModuleInstance(elements, MoreElements.asType(element))) {
return Optional.empty();
}
}
return Optional.of(
new AutoValue_PkgPrivateMetadata(MoreElements.asType(element), installIn, annotation));
}
}
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