Mercurial > hg > blitz_condensed
comparison src/com/go/trove/classfile/ExceptionsAttr.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 21 Mar 2009 11:00:06 +0000 |
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-1:000000000000 | 0:3dc0c5604566 |
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1 /* ==================================================================== | |
2 * Trove - Copyright (c) 1997-2000 Walt Disney Internet Group | |
3 * ==================================================================== | |
4 * The Tea Software License, Version 1.1 | |
5 * | |
6 * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved. | |
7 * | |
8 * Redistribution and use in source and binary forms, with or without | |
9 * modification, are permitted provided that the following conditions | |
10 * are met: | |
11 * | |
12 * 1. Redistributions of source code must retain the above copyright | |
13 * notice, this list of conditions and the following disclaimer. | |
14 * | |
15 * 2. Redistributions in binary form must reproduce the above copyright | |
16 * notice, this list of conditions and the following disclaimer in | |
17 * the documentation and/or other materials provided with the | |
18 * distribution. | |
19 * | |
20 * 3. The end-user documentation included with the redistribution, | |
21 * if any, must include the following acknowledgment: | |
22 * "This product includes software developed by the | |
23 * Walt Disney Internet Group (http://opensource.go.com/)." | |
24 * Alternately, this acknowledgment may appear in the software itself, | |
25 * if and wherever such third-party acknowledgments normally appear. | |
26 * | |
27 * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must | |
28 * not be used to endorse or promote products derived from this | |
29 * software without prior written permission. For written | |
30 * permission, please contact opensource@dig.com. | |
31 * | |
32 * 5. Products derived from this software may not be called "Tea", | |
33 * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet", | |
34 * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior | |
35 * written permission of the Walt Disney Internet Group. | |
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 WALT DISNEY INTERNET GROUP OR ITS | |
41 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
42 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
43 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
44 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
45 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
46 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
47 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
48 * ==================================================================== | |
49 * | |
50 * For more information about Tea, please see http://opensource.go.com/. | |
51 */ | |
52 | |
53 package com.go.trove.classfile; | |
54 | |
55 import java.util.*; | |
56 import java.io.*; | |
57 | |
58 /****************************************************************************** | |
59 * This class corresponds to the Exceptions_attribute structure as defined in | |
60 * section 4.7.5 of <i>The Java Virtual Machine Specification</i>. | |
61 * | |
62 * @author Brian S O'Neill | |
63 * @version | |
64 * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 00/11/27 <!-- $--> | |
65 */ | |
66 class ExceptionsAttr extends Attribute { | |
67 private List mExceptions = new ArrayList(2); | |
68 | |
69 public ExceptionsAttr(ConstantPool cp) { | |
70 super(cp, EXCEPTIONS); | |
71 } | |
72 | |
73 public String[] getExceptions() { | |
74 int size = mExceptions.size(); | |
75 String[] names = new String[size]; | |
76 | |
77 for (int i=0; i<size; i++) { | |
78 names[i] = ((ConstantClassInfo)mExceptions.get(i)).getClassName(); | |
79 } | |
80 | |
81 return names; | |
82 } | |
83 | |
84 public void addException(ConstantClassInfo type) { | |
85 mExceptions.add(type); | |
86 } | |
87 | |
88 public int getLength() { | |
89 return 2 + 2 * mExceptions.size(); | |
90 } | |
91 | |
92 public void writeDataTo(DataOutput dout) throws IOException { | |
93 int size = mExceptions.size(); | |
94 dout.writeShort(size); | |
95 for (int i=0; i<size; i++) { | |
96 ConstantClassInfo info = (ConstantClassInfo)mExceptions.get(i); | |
97 dout.writeShort(info.getIndex()); | |
98 } | |
99 } | |
100 | |
101 static Attribute define(ConstantPool cp, | |
102 String name, | |
103 int length, | |
104 DataInput din) throws IOException { | |
105 | |
106 ExceptionsAttr attr = new ExceptionsAttr(cp); | |
107 | |
108 int size = din.readUnsignedShort(); | |
109 length -= 2; | |
110 | |
111 for (int i=0; i<size; i++) { | |
112 int index = din.readUnsignedShort(); | |
113 length -= 2; | |
114 ConstantClassInfo info = (ConstantClassInfo)cp.getConstant(index); | |
115 attr.addException(info); | |
116 } | |
117 | |
118 if (length > 0) { | |
119 din.skipBytes(length); | |
120 } | |
121 | |
122 return attr; | |
123 } | |
124 } |