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66 lines (60 loc) · 2.5 KB
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/**
* Copyright (C) 2010-2011 eBusiness Information, Excilys Group
*
* 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 com.googlecode.androidannotations.annotationprocessor;
import java.lang.annotation.Annotation;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import javax.annotation.processing.AbstractProcessor;
import javax.annotation.processing.Processor;
import javax.tools.Diagnostic;
/**
* Extends {@link AbstractProcessor} to override
* {@link AbstractProcessor#getSupportedAnnotationTypes()}, enabling usage of
* {@link SupportedAnnotationClasses} on a {@link Processor}.
*
* @author Pierre-Yves Ricau
*/
public abstract class AnnotatedAbstractProcessor extends AbstractProcessor {
/**
* If the processor class is annotated with
* {@link SupportedAnnotationClasses} , return an unmodifiable set with the
* set of strings corresponding to the array of classes of the annotation.
* If the class is not so annotated, the
* {@link AbstractProcessor#getSupportedAnnotationTypes()} method is called.
*
* @return the names of the annotation classes supported by this processor,
* or {@link AbstractProcessor#getSupportedAnnotationTypes()} result
* if none
*/
public Set<String> getSupportedAnnotationTypes() {
SupportedAnnotationClasses sac = this.getClass().getAnnotation(SupportedAnnotationClasses.class);
if (sac == null) {
if (isInitialized())
processingEnv.getMessager().printMessage(Diagnostic.Kind.WARNING, "No " + SupportedAnnotationClasses.class.getSimpleName() + " annotation " + "found on " + this.getClass().getName() + ", returning parent method result.");
return super.getSupportedAnnotationTypes();
} else
return arrayToSet(sac.value());
}
private static Set<String> arrayToSet(Class<? extends Annotation>[] array) {
assert array != null;
Set<String> set = new HashSet<String>(array.length);
for (Class<? extends Annotation> c : array) {
set.add(c.getName());
}
return Collections.unmodifiableSet(set);
}
}