    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 *  Unless required by applicable law or agreed to in writing, software
    012 *  distributed under the License is distributed on an "AS IS" BASIS,
    013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 *  See the License for the specific language governing permissions and
    015 *  limitations under the License.
    016 *
    017 */
    018package org.apache.bcel.generic;
    019
    020import java.io.DataOutputStream;
    021import java.io.IOException;
    022
    023import org.apache.bcel.classfile.ClassElementValue;
    024import org.apache.bcel.classfile.ConstantUtf8;
    025import org.apache.bcel.classfile.ElementValue;
    026
    027/**
    028 * @since 6.0
    029 */
    030public class ClassElementValueGen extends ElementValueGen {
    031    // For primitive types and string type, this points to the value entry in
    032    // the cpool
    033    // For 'class' this points to the class entry in the cpool
    034    private final int idx;
    035
    036    public ClassElementValueGen(final ClassElementValue value, final ConstantPoolGen cpool, final boolean copyPoolEntries) {
    037        super(CLASS, cpool);
    038        if (copyPoolEntries) {
    039            // idx = cpool.addClass(value.getClassString());
    040            idx = cpool.addUtf8(value.getClassString());
    041        } else {
    042            idx = value.getIndex();
    043        }
    044    }
    045
    046    protected ClassElementValueGen(final int typeIdx, final ConstantPoolGen cpool) {
    047        super(ElementValueGen.CLASS, cpool);
    048        this.idx = typeIdx;
    049    }
    050
    051    public ClassElementValueGen(final ObjectType t, final ConstantPoolGen cpool) {
    052        super(ElementValueGen.CLASS, cpool);
    053        // this.idx = cpool.addClass(t);
    054        idx = cpool.addUtf8(t.getSignature());
    055    }
    056
    057    @Override
    058    public void dump(final DataOutputStream dos) throws IOException {
    059        dos.writeByte(super.getElementValueType()); // u1 kind of value
    060        dos.writeShort(idx);
    061    }
    062
    063    public String getClassString() {
    064        final ConstantUtf8 cu8 = (ConstantUtf8) getConstantPool().getConstant(idx);
    065        return cu8.getBytes();
    066        // ConstantClass c = (ConstantClass)getConstantPool().getConstant(idx);
    067        // ConstantUtf8 utf8 =
    068        // (ConstantUtf8)getConstantPool().getConstant(c.getNameIndex());
    069        // return utf8.getBytes();
    070    }
    071
    072    /**
    073     * Return immutable variant of this ClassElementValueGen
    074     */
    075    @Override
    076    public ElementValue getElementValue() {
    077        return new ClassElementValue(super.getElementValueType(), idx, getConstantPool().getConstantPool());
    078    }
    079
    080    public int getIndex() {
    081        return idx;
    082    }
    083
    084    @Override
    085    public String stringifyValue() {
    086        return getClassString();
    087    }
    088}