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/*
 * JBoss, Home of Professional Open Source.
 *
 * Copyright 2012 Red Hat, Inc.
 *
 * 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.classfilewriter.annotations;

import org.jboss.classfilewriter.attributes.Attribute;
import org.jboss.classfilewriter.constpool.ConstPool;
import org.jboss.classfilewriter.util.ByteArrayDataOutputStream;
import org.jboss.classfilewriter.util.LazySize;

import java.io.IOException;
import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.List;

/**
 * An annotations attribute
 *
 * @author Stuart Douglas
 *
 */
public class AnnotationsAttribute extends Attribute {

    public enum Type {
        RUNTIME_VISIBLE("RuntimeVisibleAnnotations"), RUNTIME_INVISIBLE("RuntimeInvisibleAnnotations");

        Type(String tag) {
            this.tag = tag;
        }

        private final String tag;

        public String getTag() {
            return tag;
        }
    }

    private final List annotations;

    public AnnotationsAttribute(Type type, ConstPool constPool) {
        super(type.getTag(), constPool);
        this.annotations = new ArrayList();
    }


    @Override
    public void writeData(ByteArrayDataOutputStream stream) throws IOException {
        LazySize sizeMarker = stream.writeSize();
        stream.writeShort(annotations.size());
        for (ClassAnnotation annotation : annotations) {
            annotation.write(stream);
        }
        sizeMarker.markEnd();
    }

    public void addAnnotation(Annotation annotation) {
        annotations.add(AnnotationBuilder.createAnnotation(constPool, annotation));
    }

    public void addAnnotation(ClassAnnotation annotation) {
        annotations.add(annotation);
    }

}




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