/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.bcel.generic;

import java.io.DataOutputStream;
import java.io.IOException;

import org.apache.bcel.classfile.AnnotationElementValue;
import org.apache.bcel.classfile.ElementValue;

/**
 * @since 6.0
 */
public class AnnotationElementValueGen extends ElementValueGen
{
    // For annotation element values, this is the annotation
    private final AnnotationEntryGen a;

    public AnnotationElementValueGen(final AnnotationEntryGen a, final ConstantPoolGen cpool)
    {
        super(ANNOTATION, cpool);
        this.a = a;
    }

    public AnnotationElementValueGen(final int type, final AnnotationEntryGen annotation,
            final ConstantPoolGen cpool)
    {
        super(type, cpool);
        if (type != ANNOTATION) {
            throw new IllegalArgumentException(
                    "Only element values of type annotation can be built with this ctor - type specified: " + type);
        }
        this.a = annotation;
    }

    public AnnotationElementValueGen(final AnnotationElementValue value,
            final ConstantPoolGen cpool, final boolean copyPoolEntries)
    {
        super(ANNOTATION, cpool);
        a = new AnnotationEntryGen(value.getAnnotationEntry(), cpool, copyPoolEntries);
    }

    @Override
    public void dump(final DataOutputStream dos) throws IOException
    {
        dos.writeByte(super.getElementValueType()); // u1 type of value (ANNOTATION == '@')
        a.dump(dos);
    }

    @Override
    public String stringifyValue()
    {
        throw new UnsupportedOperationException("Not implemented yet");
    }

    /**
     * Return immutable variant of this AnnotationElementValueGen
     */
    @Override
    public ElementValue getElementValue()
    {
        return new AnnotationElementValue(super.getElementValueType(),
                a.getAnnotation(),
                getConstantPool().getConstantPool());
    }

    public AnnotationEntryGen getAnnotation()
    {
        return a;
    }
}
