    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
    023/**
    024 * An annotation's element value pair.
    025 *
    026 * @since 6.0
    027 */
    028public class ElementValuePair {
    029
    030    static final ElementValuePair[] EMPTY_ARRAY = {};
    031
    032    private final ElementValue elementValue;
    033
    034    private final ConstantPool constantPool;
    035
    036    private final int elementNameIndex;
    037
    038    public ElementValuePair(final int elementNameIndex, final ElementValue elementValue, final ConstantPool constantPool) {
    039        this.elementValue = elementValue;
    040        this.elementNameIndex = elementNameIndex;
    041        this.constantPool = constantPool;
    042    }
    043
    044    protected void dump(final DataOutputStream dos) throws IOException {
    045        dos.writeShort(elementNameIndex); // u2 name of the element
    046        elementValue.dump(dos);
    047    }
    048
    049    public int getNameIndex() {
    050        return elementNameIndex;
    051    }
    052
    053    public String getNameString() {
    054        return constantPool.getConstantUtf8(elementNameIndex).getBytes();
    055    }
    056
    057    public final ElementValue getValue() {
    058        return elementValue;
    059    }
    060
    061    public String toShortString() {
    062        final StringBuilder result = new StringBuilder();
    063        result.append(getNameString()).append("=").append(getValue().toShortString());
    064        return result.toString();
    065    }
    066}