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1 package org.apache.bcel.classfile; 2 3 /* ==================================================================== 4 * The Apache Software License, Version 1.1 5 * 6 * Copyright (c) 2001 The Apache Software Foundation. All rights 7 * reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in 18 * the documentation and/or other materials provided with the 19 * distribution. 20 * 21 * 3. The end-user documentation included with the redistribution, 22 * if any, must include the following acknowledgment: 23 * "This product includes software developed by the 24 * Apache Software Foundation (http://www.apache.org/)." 25 * Alternately, this acknowledgment may appear in the software itself, 26 * if and wherever such third-party acknowledgments normally appear. 27 * 28 * 4. The names "Apache" and "Apache Software Foundation" and 29 * "Apache BCEL" must not be used to endorse or promote products 30 * derived from this software without prior written permission. For 31 * written permission, please contact apache@apache.org. 32 * 33 * 5. Products derived from this software may not be called "Apache", 34 * "Apache BCEL", nor may "Apache" appear in their name, without 35 * prior written permission of the Apache Software Foundation. 36 * 37 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 38 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 39 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 40 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 41 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 42 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 43 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 44 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 45 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 46 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 47 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 48 * SUCH DAMAGE. 49 * ==================================================================== 50 * 51 * This software consists of voluntary contributions made by many 52 * individuals on behalf of the Apache Software Foundation. For more 53 * information on the Apache Software Foundation, please see 54 * <http://www.apache.org/>;. 55 */ 56 57 import org.apache.bcel.Constants; 58 import java.io.*; 59 60 /*** 61 * This class is derived from <em>Attribute</em> and represents a reference 62 * to a <a href="http://www.inf.fu-berlin.de/~bokowski/pmgjava/index.html">PMG</a> 63 * attribute. 64 * 65 * @version $Id: PMGClass.java,v 1.2 2002/03/11 16:16:35 mdahm Exp $ 66 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 67 * @see Attribute 68 */ 69 public final class PMGClass extends Attribute { 70 private int pmg_class_index, pmg_index; 71 72 /*** 73 * Initialize from another object. Note that both objects use the same 74 * references (shallow copy). Use clone() for a physical copy. 75 */ 76 public PMGClass(PMGClass c) { 77 this(c.getNameIndex(), c.getLength(), c.getPMGIndex(), c.getPMGClassIndex(), 78 c.getConstantPool()); 79 } 80 81 /*** 82 * Construct object from file stream. 83 * @param name_index Index in constant pool to CONSTANT_Utf8 84 * @param length Content length in bytes 85 * @param file Input stream 86 * @param constant_pool Array of constants 87 * @throws IOException 88 */ 89 PMGClass(int name_index, int length, DataInputStream file, 90 ConstantPool constant_pool) throws IOException 91 { 92 this(name_index, length, file.readUnsignedShort(), file.readUnsignedShort(), 93 constant_pool); 94 } 95 96 /*** 97 * @param name_index Index in constant pool to CONSTANT_Utf8 98 * @param length Content length in bytes 99 * @param constant_pool Array of constants 100 * @param PMGClass_index Index in constant pool to CONSTANT_Utf8 101 */ 102 public PMGClass(int name_index, int length, int pmg_index, int pmg_class_index, 103 ConstantPool constant_pool) 104 { 105 super(Constants.ATTR_PMG, name_index, length, constant_pool); 106 this.pmg_index = pmg_index; 107 this.pmg_class_index = pmg_class_index; 108 } 109 110 /*** 111 * Called by objects that are traversing the nodes of the tree implicitely 112 * defined by the contents of a Java class. I.e., the hierarchy of methods, 113 * fields, attributes, etc. spawns a tree of objects. 114 * 115 * @param v Visitor object 116 */ 117 public void accept(Visitor v) { 118 System.err.println("Visiting non-standard PMGClass object"); 119 } 120 121 /*** 122 * Dump source file attribute to file stream in binary format. 123 * 124 * @param file Output file stream 125 * @throws IOException 126 */ 127 public final void dump(DataOutputStream file) throws IOException 128 { 129 super.dump(file); 130 file.writeShort(pmg_index); 131 file.writeShort(pmg_class_index); 132 } 133 134 /*** 135 * @return Index in constant pool of source file name. 136 */ 137 public final int getPMGClassIndex() { return pmg_class_index; } 138 139 /*** 140 * @param PMGClass_index. 141 */ 142 public final void setPMGClassIndex(int pmg_class_index) { 143 this.pmg_class_index = pmg_class_index; 144 } 145 146 /*** 147 * @return Index in constant pool of source file name. 148 */ 149 public final int getPMGIndex() { return pmg_index; } 150 151 /*** 152 * @param PMGClass_index. 153 */ 154 public final void setPMGIndex(int pmg_index) { 155 this.pmg_index = pmg_index; 156 } 157 158 /*** 159 * @return PMG name. 160 */ 161 public final String getPMGName() { 162 ConstantUtf8 c = (ConstantUtf8)constant_pool.getConstant(pmg_index, 163 Constants.CONSTANT_Utf8); 164 return c.getBytes(); 165 } 166 167 /*** 168 * @return PMG class name. 169 */ 170 public final String getPMGClassName() { 171 ConstantUtf8 c = (ConstantUtf8)constant_pool.getConstant(pmg_class_index, 172 Constants.CONSTANT_Utf8); 173 return c.getBytes(); 174 } 175 176 /*** 177 * @return String representation 178 */ 179 public final String toString() { 180 return "PMGClass(" + getPMGName() + ", " + getPMGClassName() + ")"; 181 } 182 183 /*** 184 * @return deep copy of this attribute 185 */ 186 public Attribute copy(ConstantPool constant_pool) { 187 return (PMGClass)clone(); 188 } 189 }

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