001 /*
002 * Copyright 2007-2008 Sun Microsystems, Inc. All Rights Reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation. Sun designates this
008 * particular file as subject to the "Classpath" exception as provided
009 * by Sun in the LICENSE file that accompanied this code.
010 *
011 * This code is distributed in the hope that it will be useful, but WITHOUT
012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014 * version 2 for more details (a copy is included in the LICENSE file that
015 * accompanied this code).
016 *
017 * You should have received a copy of the GNU General Public License version
018 * 2 along with this work; if not, write to the Free Software Foundation,
019 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020 *
021 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022 * CA 95054 USA or visit www.sun.com if you need additional information or
023 * have any questions.
024 */
025
026 package com.sun.tools.classfile;
027
028 import java.io.IOException;
029
030 /**
031 * See JVMS3, section 4.8.13.
032 *
033 * <p><b>This is NOT part of any API supported by Sun Microsystems. If
034 * you write code that depends on this, you do so at your own risk.
035 * This code and its internal interfaces are subject to change or
036 * deletion without notice.</b>
037 */
038 public class LocalVariableTable_attribute extends Attribute {
039 LocalVariableTable_attribute(ClassReader cr, int name_index, int length) throws IOException {
040 super(name_index, length);
041 local_variable_table_length = cr.readUnsignedShort();
042 local_variable_table = new Entry[local_variable_table_length];
043 for (int i = 0; i < local_variable_table_length; i++)
044 local_variable_table[i] = new Entry(cr);
045 }
046
047 public LocalVariableTable_attribute(ConstantPool constant_pool, Entry[] local_variable_table)
048 throws ConstantPoolException {
049 this(constant_pool.getUTF8Index(Attribute.LocalVariableTable), local_variable_table);
050 }
051
052 public LocalVariableTable_attribute(int name_index, Entry[] local_variable_table) {
053 super(name_index, local_variable_table.length * Entry.length());
054 this.local_variable_table_length = local_variable_table.length;
055 this.local_variable_table = local_variable_table;
056 }
057
058 public <R, D> R accept(Visitor<R, D> visitor, D data) {
059 return visitor.visitLocalVariableTable(this, data);
060 }
061
062 public final int local_variable_table_length;
063 public final Entry[] local_variable_table;
064
065 public static class Entry {
066 Entry(ClassReader cr) throws IOException {
067 start_pc = cr.readUnsignedShort();
068 length = cr.readUnsignedShort();
069 name_index = cr.readUnsignedShort();
070 descriptor_index = cr.readUnsignedShort();
071 index = cr.readUnsignedShort();
072 }
073
074 public static int length() {
075 return 10;
076 }
077
078 public final int start_pc;
079 public final int length;
080 public final int name_index;
081 public final int descriptor_index;
082 public final int index;
083 }
084 }