    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.classfile;
    019
    020import java.io.DataOutputStream;
    021import java.io.IOException;
    022
    023import org.apache.bcel.Const;
    024
    025/**
    026 * an annotation's element value pair
    027 *
    028 * @version $Id: ElementValuePair
    029 * @since 6.0
    030 */
    031public class ElementValuePair
    032{
    033    private final ElementValue elementValue;
    034
    035    private final ConstantPool constantPool;
    036
    037    private final int elementNameIndex;
    038
    039    public ElementValuePair(final int elementNameIndex, final ElementValue elementValue,
    040            final ConstantPool constantPool)
    041    {
    042        this.elementValue = elementValue;
    043        this.elementNameIndex = elementNameIndex;
    044        this.constantPool = constantPool;
    045    }
    046
    047    public String getNameString()
    048    {
    049        final ConstantUtf8 c = (ConstantUtf8) constantPool.getConstant(
    050                elementNameIndex, Const.CONSTANT_Utf8);
    051        return c.getBytes();
    052    }
    053
    054    public final ElementValue getValue()
    055    {
    056        return elementValue;
    057    }
    058
    059    public int getNameIndex()
    060    {
    061        return elementNameIndex;
    062    }
    063
    064    public String toShortString()
    065    {
    066        final StringBuilder result = new StringBuilder();
    067        result.append(getNameString()).append("=").append(
    068                getValue().toShortString());
    069        return result.toString();
    070    }
    071
    072    protected void dump(final DataOutputStream dos) throws IOException {
    073        dos.writeShort(elementNameIndex); // u2 name of the element
    074        elementValue.dump(dos);
    075    }
    076}