    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.generic;
    020
    021import java.io.DataOutputStream;
    022import java.io.IOException;
    023
    024import org.apache.bcel.classfile.ClassElementValue;
    025import org.apache.bcel.classfile.ConstantUtf8;
    026import org.apache.bcel.classfile.ElementValue;
    027
    028/**
    029 * @since 6.0
    030 */
    031public class ClassElementValueGen extends ElementValueGen {
    032    // For primitive types and string type, this points to the value entry in
    033    // the cpool
    034    // For 'class' this points to the class entry in the cpool
    035    private final int idx;
    036
    037    public ClassElementValueGen(final ClassElementValue value, final ConstantPoolGen cpool, final boolean copyPoolEntries) {
    038        super(CLASS, cpool);
    039        if (copyPoolEntries) {
    040            // idx = cpool.addClass(value.getClassString());
    041            idx = cpool.addUtf8(value.getClassString());
    042        } else {
    043            idx = value.getIndex();
    044        }
    045    }
    046
    047    protected ClassElementValueGen(final int typeIdx, final ConstantPoolGen cpool) {
    048        super(CLASS, cpool);
    049        this.idx = typeIdx;
    050    }
    051
    052    public ClassElementValueGen(final ObjectType t, final ConstantPoolGen cpool) {
    053        super(CLASS, cpool);
    054        // this.idx = cpool.addClass(t);
    055        idx = cpool.addUtf8(t.getSignature());
    056    }
    057
    058    @Override
    059    public void dump(final DataOutputStream dos) throws IOException {
    060        dos.writeByte(super.getElementValueType()); // u1 kind of value
    061        dos.writeShort(idx);
    062    }
    063
    064    public String getClassString() {
    065        final ConstantUtf8 cu8 = (ConstantUtf8) getConstantPool().getConstant(idx);
    066        return cu8.getBytes();
    067        // ConstantClass c = (ConstantClass) getConstantPool().getConstant(idx);
    068        // ConstantUtf8 utf8 =
    069        // (ConstantUtf8) getConstantPool().getConstant(c.getNameIndex());
    070        // return utf8.getBytes();
    071    }
    072
    073    /**
    074     * Return immutable variant of this ClassElementValueGen
    075     */
    076    @Override
    077    public ElementValue getElementValue() {
    078        return new ClassElementValue(super.getElementValueType(), idx, getConstantPool().getConstantPool());
    079    }
    080
    081    public int getIndex() {
    082        return idx;
    083    }
    084
    085    @Override
    086    public String stringifyValue() {
    087        return getClassString();
    088    }
    089}