/*

 * reserved comment block

 * DO NOT REMOVE OR ALTER!

 */

/*

 * 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 com.sun.org.apache.bcel.internal.generic;

import java.io.DataOutputStream;

import java.io.IOException;

import com.sun.org.apache.bcel.internal.classfile.ConstantUtf8;

import com.sun.org.apache.bcel.internal.classfile.ElementValue;

import com.sun.org.apache.bcel.internal.classfile.ElementValuePair;

/**

 * @since 6.0

 */

public class ElementValuePairGen

{

    private int nameIdx;

    private final ElementValueGen value;

    private final ConstantPoolGen cpool;

    public ElementValuePairGen(final ElementValuePair nvp, final ConstantPoolGen cpool,

            final boolean copyPoolEntries)

    {

        this.cpool = cpool;

        // J5ASSERT:

        // Could assert nvp.getNameString() points to the same thing as

        // cpool.getConstant(nvp.getNameIndex())

        // if

        // (!nvp.getNameString().equals(((ConstantUtf8)cpool.getConstant(nvp.getNameIndex())).getBytes()))

        // {

        // throw new RuntimeException("envp buggered");

        // }

        if (copyPoolEntries)

        {

            nameIdx = cpool.addUtf8(nvp.getNameString());

        }

        else

        {

            nameIdx = nvp.getNameIndex();

        }

        value = ElementValueGen.copy(nvp.getValue(), cpool, copyPoolEntries);

    }

    /**

     * Retrieve an immutable version of this ElementNameValuePairGen

     */

    public ElementValuePair getElementNameValuePair()

    {

        final ElementValue immutableValue = value.getElementValue();

        return new ElementValuePair(nameIdx, immutableValue, cpool

                .getConstantPool());

    }

    protected ElementValuePairGen(final int idx, final ElementValueGen value,

            final ConstantPoolGen cpool)

    {

        this.nameIdx = idx;

        this.value = value;

        this.cpool = cpool;

    }

    public ElementValuePairGen(final String name, final ElementValueGen value,

            final ConstantPoolGen cpool)

    {

        this.nameIdx = cpool.addUtf8(name);

        this.value = value;

        this.cpool = cpool;

    }

    protected void dump(final DataOutputStream dos) throws IOException

    {

        dos.writeShort(nameIdx); // u2 name of the element

        value.dump(dos);

    }

    public int getNameIndex()

    {

        return nameIdx;

    }

    public final String getNameString()

    {

        // ConstantString cu8 = (ConstantString)cpool.getConstant(nameIdx);

        return ((ConstantUtf8) cpool.getConstant(nameIdx)).getBytes();

    }

    public final ElementValueGen getValue()

    {

        return value;

    }

    @Override

    public String toString()

    {

        return "ElementValuePair:[" + getNameString() + "="

                + value.stringifyValue() + "]";

    }

}