    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 */
    017package org.apache.bcel.classfile;
    018
    019import java.io.DataOutputStream;
    020import java.io.IOException;
    021
    022/**
    023 * An annotation's element value pair.
    024 *
    025 * @since 6.0
    026 */
    027public class ElementValuePair {
    028
    029    static final ElementValuePair[] EMPTY_ARRAY = {};
    030
    031    private final ElementValue elementValue;
    032
    033    private final ConstantPool constantPool;
    034
    035    private final int elementNameIndex;
    036
    037    public ElementValuePair(final int elementNameIndex, final ElementValue elementValue, final ConstantPool constantPool) {
    038        this.elementValue = elementValue;
    039        this.elementNameIndex = elementNameIndex;
    040        this.constantPool = constantPool;
    041    }
    042
    043    protected void dump(final DataOutputStream dos) throws IOException {
    044        dos.writeShort(elementNameIndex); // u2 name of the element
    045        elementValue.dump(dos);
    046    }
    047
    048    public int getNameIndex() {
    049        return elementNameIndex;
    050    }
    051
    052    public String getNameString() {
    053        return constantPool.getConstantUtf8(elementNameIndex).getBytes();
    054    }
    055
    056    public final ElementValue getValue() {
    057        return elementValue;
    058    }
    059
    060    public String toShortString() {
    061        final StringBuilder result = new StringBuilder();
    062        result.append(getNameString()).append("=").append(getValue().toShortString());
    063        return result.toString();
    064    }
    065}