Mercurial > jdk8-mips64-public > langtools / annotate
src/share/classes/com/sun/tools/classfile/Code_attribute.java@7708bd6d800d (annotated)
src/share/classes/com/sun/tools/classfile/Code_attribute.java
Tue, 03 Jun 2008 13:26:47 -0700
- author
- jjg
- date
- Tue, 03 Jun 2008 13:26:47 -0700
- changeset 46
- 7708bd6d800d
- child 54
- eaf608c64fec
- permissions
- -rw-r--r--
4075303: Use javap to enquire aboput a specific inner class
4348375: Javap is not internationalized
4459541: "javap -l" shows line numbers as signed short; they should be unsigned
4501660: change diagnostic of -help as 'print this help message and exit'
4776241: unused source file in javap...
4870651: javap should recognize generics, varargs, enum
4876942: javap invoked without args does not print help screen
4880663: javap could output whitespace between class name and opening brace
4975569: javap doesn't print new flag bits
6271787: javap dumps LocalVariableTypeTable attribute in hex, needs to print a table
6305779: javap: support annotations
6439940: Clean up javap implementation
6469569: wrong check of searchpath in JavapEnvironment
6474890: javap does not open .zip files in -classpath
6587786: Javap throws error : "ERROR:Could not find <classname>" for JRE classes
6622215: javap ignores certain relevant access flags
6622216: javap names some attributes incorrectly
6622232: javap gets whitespace confused
6622260: javap prints negative bytes incorrectly in hex
Reviewed-by: ksrini
| jjg@46 | 1 | /* |
| jjg@46 | 2 | * Copyright 2007 Sun Microsystems, Inc. All Rights Reserved. |
| jjg@46 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| jjg@46 | 4 | * |
| jjg@46 | 5 | * This code is free software; you can redistribute it and/or modify it |
| jjg@46 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| jjg@46 | 7 | * published by the Free Software Foundation. Sun designates this |
| jjg@46 | 8 | * particular file as subject to the "Classpath" exception as provided |
| jjg@46 | 9 | * by Sun in the LICENSE file that accompanied this code. |
| jjg@46 | 10 | * |
| jjg@46 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| jjg@46 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| jjg@46 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| jjg@46 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| jjg@46 | 15 | * accompanied this code). |
| jjg@46 | 16 | * |
| jjg@46 | 17 | * You should have received a copy of the GNU General Public License version |
| jjg@46 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| jjg@46 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| jjg@46 | 20 | * |
| jjg@46 | 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| jjg@46 | 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| jjg@46 | 23 | * have any questions. |
| jjg@46 | 24 | */ |
| jjg@46 | 25 | |
| jjg@46 | 26 | package com.sun.tools.classfile; |
| jjg@46 | 27 | |
| jjg@46 | 28 | import java.io.IOException; |
| jjg@46 | 29 | |
| jjg@46 | 30 | /** |
| jjg@46 | 31 | * See JVMS3, section 4.8.3. |
| jjg@46 | 32 | * |
| jjg@46 | 33 | * <p><b>This is NOT part of any API supported by Sun Microsystems. If |
| jjg@46 | 34 | * you write code that depends on this, you do so at your own risk. |
| jjg@46 | 35 | * This code and its internal interfaces are subject to change or |
| jjg@46 | 36 | * deletion without notice.</b> |
| jjg@46 | 37 | */ |
| jjg@46 | 38 | public class Code_attribute extends Attribute { |
| jjg@46 | 39 | public class InvalidIndex extends AttributeException { |
| jjg@46 | 40 | InvalidIndex(int index) { |
| jjg@46 | 41 | this.index = index; |
| jjg@46 | 42 | } |
| jjg@46 | 43 | |
| jjg@46 | 44 | @Override |
| jjg@46 | 45 | public String getMessage() { |
| jjg@46 | 46 | // i18n |
| jjg@46 | 47 | return "invalid index " + index + " in Code attribute"; |
| jjg@46 | 48 | } |
| jjg@46 | 49 | |
| jjg@46 | 50 | public final int index; |
| jjg@46 | 51 | } |
| jjg@46 | 52 | |
| jjg@46 | 53 | Code_attribute(ClassReader cr, int name_index, int length) |
| jjg@46 | 54 | throws IOException, ConstantPoolException { |
| jjg@46 | 55 | super(name_index, length); |
| jjg@46 | 56 | max_stack = cr.readUnsignedShort(); |
| jjg@46 | 57 | max_locals = cr.readUnsignedShort(); |
| jjg@46 | 58 | code_length = cr.readInt(); |
| jjg@46 | 59 | code = new byte[code_length]; |
| jjg@46 | 60 | cr.readFully(code); |
| jjg@46 | 61 | exception_table_langth = cr.readUnsignedShort(); |
| jjg@46 | 62 | exception_table = new Exception_data[exception_table_langth]; |
| jjg@46 | 63 | for (int i = 0; i < exception_table_langth; i++) |
| jjg@46 | 64 | exception_table[i] = new Exception_data(cr); |
| jjg@46 | 65 | attributes = new Attributes(cr); |
| jjg@46 | 66 | } |
| jjg@46 | 67 | |
| jjg@46 | 68 | public int getByte(int offset) throws InvalidIndex { |
| jjg@46 | 69 | if (offset < 0 || offset >= code.length) |
| jjg@46 | 70 | throw new InvalidIndex(offset); |
| jjg@46 | 71 | return code[offset]; |
| jjg@46 | 72 | } |
| jjg@46 | 73 | |
| jjg@46 | 74 | public int getUnsignedByte(int offset) throws InvalidIndex { |
| jjg@46 | 75 | if (offset < 0 || offset >= code.length) |
| jjg@46 | 76 | throw new InvalidIndex(offset); |
| jjg@46 | 77 | return code[offset] & 0xff; |
| jjg@46 | 78 | } |
| jjg@46 | 79 | |
| jjg@46 | 80 | public int getShort(int offset) throws InvalidIndex { |
| jjg@46 | 81 | if (offset < 0 || offset + 1 >= code.length) |
| jjg@46 | 82 | throw new InvalidIndex(offset); |
| jjg@46 | 83 | return (code[offset] << 8) | (code[offset + 1] & 0xFF); |
| jjg@46 | 84 | } |
| jjg@46 | 85 | |
| jjg@46 | 86 | public int getUnsignedShort(int offset) throws InvalidIndex { |
| jjg@46 | 87 | if (offset < 0 || offset + 1 >= code.length) |
| jjg@46 | 88 | throw new InvalidIndex(offset); |
| jjg@46 | 89 | return ((code[offset] << 8) | (code[offset + 1] & 0xFF)) & 0xFFFF; |
| jjg@46 | 90 | } |
| jjg@46 | 91 | |
| jjg@46 | 92 | public int getInt(int offset) throws InvalidIndex { |
| jjg@46 | 93 | if (offset < 0 || offset + 3 >= code.length) |
| jjg@46 | 94 | throw new InvalidIndex(offset); |
| jjg@46 | 95 | return (getShort(offset) << 16) | (getShort(offset + 2) & 0xFFFF); |
| jjg@46 | 96 | } |
| jjg@46 | 97 | |
| jjg@46 | 98 | public <R, D> R accept(Visitor<R, D> visitor, D data) { |
| jjg@46 | 99 | return visitor.visitCode(this, data); |
| jjg@46 | 100 | } |
| jjg@46 | 101 | |
| jjg@46 | 102 | public final int max_stack; |
| jjg@46 | 103 | public final int max_locals; |
| jjg@46 | 104 | public final int code_length; |
| jjg@46 | 105 | public final byte[] code; |
| jjg@46 | 106 | public final int exception_table_langth; |
| jjg@46 | 107 | public final Exception_data[] exception_table; |
| jjg@46 | 108 | public final Attributes attributes; |
| jjg@46 | 109 | |
| jjg@46 | 110 | public class Exception_data { |
| jjg@46 | 111 | Exception_data(ClassReader cr) throws IOException { |
| jjg@46 | 112 | start_pc = cr.readUnsignedShort(); |
| jjg@46 | 113 | end_pc = cr.readUnsignedShort(); |
| jjg@46 | 114 | handler_pc = cr.readUnsignedShort(); |
| jjg@46 | 115 | catch_type = cr.readUnsignedShort(); |
| jjg@46 | 116 | } |
| jjg@46 | 117 | |
| jjg@46 | 118 | public final int start_pc; |
| jjg@46 | 119 | public final int end_pc; |
| jjg@46 | 120 | public final int handler_pc; |
| jjg@46 | 121 | public final int catch_type; |
| jjg@46 | 122 | } |
| jjg@46 | 123 | } |
