Tue, 24 Feb 2009 17:48:53 -0800
6498938: Faulty comparison of TypeMirror objects in getElementsAnnotatedWith implementation
Reviewed-by: jjg
1 /*
2 * Copyright 2007-2008 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
26 package com.sun.tools.classfile;
28 import java.io.IOException;
30 /**
31 * See JVMS3, section 4.8.3.
32 *
33 * <p><b>This is NOT part of any API supported by Sun Microsystems. If
34 * you write code that depends on this, you do so at your own risk.
35 * This code and its internal interfaces are subject to change or
36 * deletion without notice.</b>
37 */
38 public class Code_attribute extends Attribute {
39 public class InvalidIndex extends AttributeException {
40 private static final long serialVersionUID = -8904527774589382802L;
41 InvalidIndex(int index) {
42 this.index = index;
43 }
45 @Override
46 public String getMessage() {
47 // i18n
48 return "invalid index " + index + " in Code attribute";
49 }
51 public final int index;
52 }
54 Code_attribute(ClassReader cr, int name_index, int length)
55 throws IOException, ConstantPoolException {
56 super(name_index, length);
57 max_stack = cr.readUnsignedShort();
58 max_locals = cr.readUnsignedShort();
59 code_length = cr.readInt();
60 code = new byte[code_length];
61 cr.readFully(code);
62 exception_table_langth = cr.readUnsignedShort();
63 exception_table = new Exception_data[exception_table_langth];
64 for (int i = 0; i < exception_table_langth; i++)
65 exception_table[i] = new Exception_data(cr);
66 attributes = new Attributes(cr);
67 }
69 public int getByte(int offset) throws InvalidIndex {
70 if (offset < 0 || offset >= code.length)
71 throw new InvalidIndex(offset);
72 return code[offset];
73 }
75 public int getUnsignedByte(int offset) throws InvalidIndex {
76 if (offset < 0 || offset >= code.length)
77 throw new InvalidIndex(offset);
78 return code[offset] & 0xff;
79 }
81 public int getShort(int offset) throws InvalidIndex {
82 if (offset < 0 || offset + 1 >= code.length)
83 throw new InvalidIndex(offset);
84 return (code[offset] << 8) | (code[offset + 1] & 0xFF);
85 }
87 public int getUnsignedShort(int offset) throws InvalidIndex {
88 if (offset < 0 || offset + 1 >= code.length)
89 throw new InvalidIndex(offset);
90 return ((code[offset] << 8) | (code[offset + 1] & 0xFF)) & 0xFFFF;
91 }
93 public int getInt(int offset) throws InvalidIndex {
94 if (offset < 0 || offset + 3 >= code.length)
95 throw new InvalidIndex(offset);
96 return (getShort(offset) << 16) | (getShort(offset + 2) & 0xFFFF);
97 }
99 public <R, D> R accept(Visitor<R, D> visitor, D data) {
100 return visitor.visitCode(this, data);
101 }
103 public final int max_stack;
104 public final int max_locals;
105 public final int code_length;
106 public final byte[] code;
107 public final int exception_table_langth;
108 public final Exception_data[] exception_table;
109 public final Attributes attributes;
111 public class Exception_data {
112 Exception_data(ClassReader cr) throws IOException {
113 start_pc = cr.readUnsignedShort();
114 end_pc = cr.readUnsignedShort();
115 handler_pc = cr.readUnsignedShort();
116 catch_type = cr.readUnsignedShort();
117 }
119 public final int start_pc;
120 public final int end_pc;
121 public final int handler_pc;
122 public final int catch_type;
123 }
124 }