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}