4 */ 5 /* 6 * Licensed to the Apache Software Foundation (ASF) under one or more 7 * contributor license agreements. See the NOTICE file distributed with 8 * this work for additional information regarding copyright ownership. 9 * The ASF licenses this file to You under the Apache License, Version 2.0 10 * (the "License"); you may not use this file except in compliance with 11 * the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 */ 21 22 package com.sun.org.apache.bcel.internal.classfile; 23 24 25 import com.sun.org.apache.bcel.internal.Constants; 26 import java.io.*; 27 28 /** 29 * This class is derived from <em>Attribute</em> and declares this class as 30 * `synthetic', i.e., it needs special handling. The JVM specification 31 * states "A class member that does not appear in the source code must be 32 * marked using a Synthetic attribute." It may appear in the ClassFile 33 * attribute table, a field_info table or a method_info table. This class 34 * is intended to be instantiated from the 35 * <em>Attribute.readAttribute()</em> method. 36 * 37 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 38 * @see Attribute 39 */ 40 public final class Synthetic extends Attribute { 41 private byte[] bytes; 42 43 /** 44 * Initialize from another object. Note that both objects use the same 45 * references (shallow copy). Use copy() for a physical copy. 46 */ 47 public Synthetic(Synthetic c) { 48 this(c.getNameIndex(), c.getLength(), c.getBytes(), c.getConstantPool()); 49 } 50 51 /** 52 * @param name_index Index in constant pool to CONSTANT_Utf8, which 53 * should represent the string "Synthetic". 54 * @param length Content length in bytes - should be zero. 55 * @param bytes Attribute contents 56 * @param constant_pool The constant pool this attribute is associated 57 * with. 58 */ 59 public Synthetic(int name_index, int length, byte[] bytes, 60 ConstantPool constant_pool) 61 { 62 super(Constants.ATTR_SYNTHETIC, name_index, length, constant_pool); 63 this.bytes = bytes; 64 } 65 66 /** 67 * Construct object from file stream. 68 * @param name_index Index in constant pool to CONSTANT_Utf8 69 * @param length Content length in bytes 70 * @param file Input stream 71 * @param constant_pool Array of constants 72 * @throws IOException 73 */ 74 Synthetic(int name_index, int length, DataInputStream file, 75 ConstantPool constant_pool) throws IOException 76 { 77 this(name_index, length, (byte [])null, constant_pool); 78 79 if(length > 0) { 80 bytes = new byte[length]; 81 file.readFully(bytes); 82 System.err.println("Synthetic attribute with length > 0"); 83 } 84 } 85 /** 86 * Called by objects that are traversing the nodes of the tree implicitely 87 * defined by the contents of a Java class. I.e., the hierarchy of methods, 88 * fields, attributes, etc. spawns a tree of objects. 89 * 90 * @param v Visitor object 91 */ 92 public void accept(Visitor v) { 93 v.visitSynthetic(this); 94 } 95 /** 96 * Dump source file attribute to file stream in binary format. 97 * 98 * @param file Output file stream 99 * @throws IOException 100 */ 101 public final void dump(DataOutputStream file) throws IOException 102 { 103 super.dump(file); 104 if(length > 0) 105 file.write(bytes, 0, length); 106 } 107 /** 108 * @return data bytes. 109 */ 110 public final byte[] getBytes() { return bytes; } 111 112 /** 113 * @param bytes. 114 */ 115 public final void setBytes(byte[] bytes) { 116 this.bytes = bytes; 117 } 118 119 /** 120 * @return String representation. 121 */ 122 public final String toString() { 123 StringBuffer buf = new StringBuffer("Synthetic"); 124 125 if(length > 0) 126 buf.append(" " + Utility.toHexString(bytes)); 127 128 return buf.toString(); 129 } 130 131 /** 132 * @return deep copy of this attribute 133 */ 134 public Attribute copy(ConstantPool constant_pool) { 135 Synthetic c = (Synthetic)clone(); 136 137 if(bytes != null) 138 c.bytes = (byte[])bytes.clone(); 139 140 c.constant_pool = constant_pool; 141 return c; 142 } 143 } | 4 */ 5 /* 6 * Licensed to the Apache Software Foundation (ASF) under one or more 7 * contributor license agreements. See the NOTICE file distributed with 8 * this work for additional information regarding copyright ownership. 9 * The ASF licenses this file to You under the Apache License, Version 2.0 10 * (the "License"); you may not use this file except in compliance with 11 * the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 */ 21 22 package com.sun.org.apache.bcel.internal.classfile; 23 24 import java.io.DataInput; 25 import java.io.DataOutputStream; 26 import java.io.IOException; 27 28 import com.sun.org.apache.bcel.internal.Const; 29 30 /** 31 * This class is derived from <em>Attribute</em> and declares this class as 32 * `synthetic', i.e., it needs special handling. The JVM specification 33 * states "A class member that does not appear in the source code must be 34 * marked using a Synthetic attribute." It may appear in the ClassFile 35 * attribute table, a field_info table or a method_info table. This class 36 * is intended to be instantiated from the 37 * <em>Attribute.readAttribute()</em> method. 38 * 39 * @version $Id: Synthetic.java 1749603 2016-06-21 20:50:19Z ggregory $ 40 * @see Attribute 41 */ 42 public final class Synthetic extends Attribute { 43 44 private byte[] bytes; 45 46 47 /** 48 * Initialize from another object. Note that both objects use the same 49 * references (shallow copy). Use copy() for a physical copy. 50 */ 51 public Synthetic(final Synthetic c) { 52 this(c.getNameIndex(), c.getLength(), c.getBytes(), c.getConstantPool()); 53 } 54 55 56 /** 57 * @param name_index Index in constant pool to CONSTANT_Utf8, which 58 * should represent the string "Synthetic". 59 * @param length Content length in bytes - should be zero. 60 * @param bytes Attribute contents 61 * @param constant_pool The constant pool this attribute is associated 62 * with. 63 */ 64 public Synthetic(final int name_index, final int length, final byte[] bytes, final ConstantPool constant_pool) { 65 super(Const.ATTR_SYNTHETIC, name_index, length, constant_pool); 66 this.bytes = bytes; 67 } 68 69 70 /** 71 * Construct object from input stream. 72 * 73 * @param name_index Index in constant pool to CONSTANT_Utf8 74 * @param length Content length in bytes 75 * @param input Input stream 76 * @param constant_pool Array of constants 77 * @throws IOException 78 */ 79 Synthetic(final int name_index, final int length, final DataInput input, final ConstantPool constant_pool) 80 throws IOException { 81 this(name_index, length, (byte[]) null, constant_pool); 82 if (length > 0) { 83 bytes = new byte[length]; 84 input.readFully(bytes); 85 System.err.println("Synthetic attribute with length > 0"); 86 } 87 } 88 89 90 /** 91 * Called by objects that are traversing the nodes of the tree implicitely 92 * defined by the contents of a Java class. I.e., the hierarchy of methods, 93 * fields, attributes, etc. spawns a tree of objects. 94 * 95 * @param v Visitor object 96 */ 97 @Override 98 public void accept( final Visitor v ) { 99 v.visitSynthetic(this); 100 } 101 102 103 /** 104 * Dump source file attribute to file stream in binary format. 105 * 106 * @param file Output file stream 107 * @throws IOException 108 */ 109 @Override 110 public final void dump( final DataOutputStream file ) throws IOException { 111 super.dump(file); 112 if (super.getLength() > 0) { 113 file.write(bytes, 0, super.getLength()); 114 } 115 } 116 117 118 /** 119 * @return data bytes. 120 */ 121 public final byte[] getBytes() { 122 return bytes; 123 } 124 125 126 /** 127 * @param bytes 128 */ 129 public final void setBytes( final byte[] bytes ) { 130 this.bytes = bytes; 131 } 132 133 134 /** 135 * @return String representation. 136 */ 137 @Override 138 public final String toString() { 139 final StringBuilder buf = new StringBuilder("Synthetic"); 140 if (super.getLength() > 0) { 141 buf.append(" ").append(Utility.toHexString(bytes)); 142 } 143 return buf.toString(); 144 } 145 146 147 /** 148 * @return deep copy of this attribute 149 */ 150 @Override 151 public Attribute copy( final ConstantPool _constant_pool ) { 152 final Synthetic c = (Synthetic) clone(); 153 if (bytes != null) { 154 c.bytes = new byte[bytes.length]; 155 System.arraycopy(bytes, 0, c.bytes, 0, bytes.length); 156 } 157 c.setConstantPool(_constant_pool); 158 return c; 159 } 160 } |