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}