Package org.apache.bcel.generic

Source Code of org.apache.bcel.generic.ClassElementValueGen

/*
* 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
*
*      http://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.generic;

import java.io.DataOutputStream;
import java.io.IOException;
import org.apache.bcel.classfile.ElementValue;
import org.apache.bcel.classfile.ConstantUtf8;
import org.apache.bcel.classfile.ClassElementValue;
import org.apache.bcel.generic.ConstantPoolGen;
import org.apache.bcel.generic.ObjectType;
import org.apache.bcel.generic.ElementValueGen;

public class ClassElementValueGen extends ElementValueGen
{
  // 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 int idx;

  protected ClassElementValueGen(int typeIdx, ConstantPoolGen cpool)
  {
    super(ElementValueGen.CLASS, cpool);
    this.idx = typeIdx;
  }

  public ClassElementValueGen(ObjectType t, ConstantPoolGen cpool)
  {
    super(ElementValueGen.CLASS, cpool);
    // this.idx = cpool.addClass(t);
    idx = cpool.addUtf8(t.getSignature());
  }

  /**
   * Return immutable variant of this ClassElementValueGen
   */
  @Override
    public ElementValue getElementValue()
  {
    return new ClassElementValue(type, idx, cpGen.getConstantPool());
  }

  public ClassElementValueGen(ClassElementValue value, ConstantPoolGen cpool,
      boolean copyPoolEntries)
  {
    super(CLASS, cpool);
    if (copyPoolEntries)
    {
      // idx = cpool.addClass(value.getClassString());
      idx = cpool.addUtf8(value.getClassString());
    }
    else
    {
      idx = value.getIndex();
    }
  }

  public int getIndex()
  {
    return idx;
  }

  public String getClassString()
  {
    ConstantUtf8 cu8 = (ConstantUtf8) getConstantPool().getConstant(idx);
    return cu8.getBytes();
    // ConstantClass c = (ConstantClass)getConstantPool().getConstant(idx);
    // ConstantUtf8 utf8 =
    // (ConstantUtf8)getConstantPool().getConstant(c.getNameIndex());
    // return utf8.getBytes();
  }

  @Override
    public String stringifyValue()
  {
    return getClassString();
  }

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