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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.root;
import com.google.auto.common.MoreElements;
import com.google.auto.value.AutoValue;
import com.squareup.javapoet.ClassName;
import dagger.hilt.processor.internal.ClassNames;
import javax.annotation.processing.ProcessingEnvironment;
import javax.lang.model.element.Element;
import javax.lang.model.element.TypeElement;
/** Metadata for a root element that can trigger the {@link RootProcessor}. */
@AutoValue
abstract class Root {
/**
* Creates the default root for this (test) build compilation.
*
* <p>A default root installs only the global {@code InstallIn} and {@code TestInstallIn}
* dependencies. Test-specific dependencies are not installed in the default root.
*
* <p>The default root is used for two purposes:
*
* <ul>
* <li>To inject {@code EarlyEntryPoint} annotated interfaces.
* <li>To inject tests that only depend on global dependencies
* </ul>
*/
static Root createDefaultRoot(ProcessingEnvironment env) {
TypeElement rootElement =
env.getElementUtils().getTypeElement(ClassNames.DEFAULT_ROOT.canonicalName());
return new AutoValue_Root(rootElement, /*isTestRoot=*/ true);
}
/** Creates a {@plainlink Root root} for the given {@plainlink Element element}. */
static Root create(Element element, ProcessingEnvironment env) {
TypeElement rootElement = MoreElements.asType(element);
return new AutoValue_Root(rootElement, RootType.of(rootElement).isTestRoot());
}
/** Returns the root element that should be used with processing. */
abstract TypeElement element();
/** Returns {@code true} if this is a test root. */
abstract boolean isTestRoot();
/** Returns the class name of the root element. */
ClassName classname() {
return ClassName.get(element());
}
@Override
public final String toString() {
return element().toString();
}
/** Returns {@code true} if this uses the default root. */
boolean isDefaultRoot() {
return classname().equals(ClassNames.DEFAULT_ROOT);
}
}
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