001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     bstefanescu
018 */
019package org.nuxeo.ecm.webengine.jaxrs.scan;
020
021import java.io.IOException;
022import java.util.ArrayList;
023import java.util.List;
024import java.util.Set;
025
026import org.objectweb.asm.AnnotationVisitor;
027import org.objectweb.asm.ClassVisitor;
028import org.objectweb.asm.Opcodes;
029
030/**
031 * @author <a href="mailto:[email protected]">Bogdan Stefanescu</a>
032 */
033public class AnnotationReader extends ClassVisitor {
034
035    protected Set<String> annotations;
036
037    protected List<String> results;
038
039    protected String cname;
040
041    public AnnotationReader(Set<String> annotations) throws IOException {
042        super(Opcodes.ASM5);
043        results = new ArrayList<String>();
044        this.annotations = annotations;
045    }
046
047    public String getClassName() {
048        return cname.replace('/', '.');
049    }
050
051    public String getFileName() {
052        return cname;
053    }
054
055    public List<String> getResults() {
056        return results;
057    }
058
059    public boolean hasResults() {
060        return !results.isEmpty();
061    }
062
063    @Override
064    public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
065        cname = name;
066    }
067
068    @Override
069    public AnnotationVisitor visitAnnotation(String arg0, boolean arg1) {
070        if (annotations.contains(arg0)) {
071            results.add(arg0);
072        }
073        return null;
074    }
075
076}