/*
 * 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
 *
 *   https://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.classfile;

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

/**
 * Represents a class element value in an annotation.
 *
 * @since 6.0
 */
public class ClassElementValue extends ElementValue {
    // For primitive types and string type, this points to the value entry in
    // the cpool
    // For 'class' this points to the class entry in the cpool
    private final int idx;

    /**
     * Constructs a ClassElementValue.
     *
     * @param type the type.
     * @param idx the index.
     * @param cpool the constant pool.
     */
    public ClassElementValue(final int type, final int idx, final ConstantPool cpool) {
        super(type, cpool);
        this.idx = idx;
    }

    @Override
    public void dump(final DataOutputStream dos) throws IOException {
        dos.writeByte(super.getType()); // u1 kind of value
        dos.writeShort(idx);
    }

    /**
     * Gets the class string.
     *
     * @return the class string.
     */
    public String getClassString() {
        return super.getConstantPool().getConstantUtf8(idx).getBytes();
    }

    /**
     * Gets the index.
     *
     * @return the index.
     */
    public int getIndex() {
        return idx;
    }

    @Override
    public String stringifyValue() {
        return super.getConstantPool().getConstantUtf8(idx).getBytes();
    }
}
