Mercurial > hg > blitz_stable

comparison src/com/go/trove/classfile/SourceFileAttr.java @ 0:3dc0c5604566

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Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
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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.io.*;
56
57 /******************************************************************************
58 * This class corresponds to the SourceFile_attribute structure as defined
59 * in section 4.7.2 of <i>The Java Virtual Machine Specification</i>.
60 *
61 * @author Brian S O'Neill
62 * @version
63 * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 00/11/27 <!-- $-->
64 * @see ClassFile
65 */
66 class SourceFileAttr extends Attribute {
67 private String mFileName;
68
69 private ConstantUTFInfo mSourcefile;
70
71 public SourceFileAttr(ConstantPool cp, String fileName) {
72 super(cp, SOURCE_FILE);
73
74 mFileName = fileName;
75 mSourcefile = ConstantUTFInfo.make(cp, fileName);
76 }
77
78 /**
79 * Returns the source file name.
80 */
81 public String getFileName() {
82 return mFileName;
83 }
84
85 /**
86 * Returns a constant from the constant pool with the source file name.
87 */
88 public ConstantUTFInfo getFileNameConstant() {
89 return mSourcefile;
90 }
91
92 /**
93 * Returns the length of the source file attribute. (2 bytes)
94 */
95 public int getLength() {
96 return 2;
97 }
98
99 public void writeDataTo(DataOutput dout) throws IOException {
100 dout.writeShort(mSourcefile.getIndex());
101 }
102
103 static Attribute define(ConstantPool cp,
104 String name,
105 int length,
106 DataInput din) throws IOException {
107
108 int index = din.readUnsignedShort();
109 if ((length -= 2) > 0) {
110 din.skipBytes(length);
111 }
112
113 String filename = ((ConstantUTFInfo)cp.getConstant(index)).getValue();
114
115 return new SourceFileAttr(cp, filename);
116 }
117 }