    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one
    003 * or more contributor license agreements.  See the NOTICE file
    004 * distributed with this work for additional information
    005 * regarding copyright ownership.  The ASF licenses this file
    006 * to you under the Apache License, Version 2.0 (the
    007 * "License"); you may not use this file except in compliance
    008 * with the License.  You may obtain a copy of the License at
    009 *
    010 *   https://www.apache.org/licenses/LICENSE-2.0
    011 *
    012 * Unless required by applicable law or agreed to in writing,
    013 * software distributed under the License is distributed on an
    014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
    015 * KIND, either express or implied.  See the License for the
    016 * specific language governing permissions and limitations
    017 * under the License.
    018 */
    019package org.apache.bcel.classfile;
    020
    021import java.io.DataOutputStream;
    022import java.io.IOException;
    023
    024/**
    025 * Represents a class element value in an annotation.
    026 *
    027 * @since 6.0
    028 */
    029public class ClassElementValue extends ElementValue {
    030    // For primitive types and string type, this points to the value entry in
    031    // the cpool
    032    // For 'class' this points to the class entry in the cpool
    033    private final int idx;
    034
    035    /**
    036     * Constructs a ClassElementValue.
    037     *
    038     * @param type the type.
    039     * @param idx the index.
    040     * @param cpool the constant pool.
    041     */
    042    public ClassElementValue(final int type, final int idx, final ConstantPool cpool) {
    043        super(type, cpool);
    044        this.idx = idx;
    045    }
    046
    047    @Override
    048    public void dump(final DataOutputStream dos) throws IOException {
    049        dos.writeByte(super.getType()); // u1 kind of value
    050        dos.writeShort(idx);
    051    }
    052
    053    /**
    054     * Gets the class string.
    055     *
    056     * @return the class string.
    057     */
    058    public String getClassString() {
    059        return super.getConstantPool().getConstantUtf8(idx).getBytes();
    060    }
    061
    062    /**
    063     * Gets the index.
    064     *
    065     * @return the index.
    066     */
    067    public int getIndex() {
    068        return idx;
    069    }
    070
    071    @Override
    072    public String stringifyValue() {
    073        return super.getConstantPool().getConstantUtf8(idx).getBytes();
    074    }
    075}