/*
* JBoss, Home of Professional Open Source
* Copyright 2013, Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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 org.jboss.as.weld.util;
import java.lang.annotation.Inherited;
import java.util.ArrayList;
import java.util.List;
import org.jboss.jandex.AnnotationInstance;
import org.jboss.jandex.AnnotationTarget;
import org.jboss.jandex.ClassInfo;
import org.jboss.jandex.DotName;
import com.google.common.base.Function;
import com.google.common.base.Predicate;
/**
* Utilities for working with Jandex indices.
*
* @author Jozef Hartinger
*
*/
public class Indices {
public static final DotName INHERITED_NAME = DotName.createSimple(Inherited.class.getName());
public static final Function<ClassInfo, String> CLASS_INFO_TO_FQCN = new Function<ClassInfo, String>() {
@Override
public String apply(ClassInfo input) {
return input.name().toString();
}
};
public static final Predicate<ClassInfo> ANNOTATION_PREDICATE = new Predicate<ClassInfo>() {
@Override
public boolean apply(ClassInfo input) {
return isAnnotation(input);
}
};
private Indices() {
}
private static final int ANNOTATION = 0x00002000;
public static boolean isAnnotation(ClassInfo clazz) {
return (clazz.flags() & ANNOTATION) != 0;
}
/**
* Determines a list of classes the given annotation instances are defined on. If an annotation instance is not defined on a
* class (e.g. on a member) this annotation instance is not reflected anyhow in the resulting list.
*/
public static List<ClassInfo> getAnnotatedClasses(List<AnnotationInstance> instances) {
List<ClassInfo> result = new ArrayList<ClassInfo>();
for (AnnotationInstance instance : instances) {
AnnotationTarget target = instance.target();
if (target instanceof ClassInfo) {
result.add((ClassInfo) target);
}
}
return result;
}
}