Mercurial > hg > blitz_stable

comparison src/com/go/trove/classfile/ConstantFieldInfo.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 CONSTANT_Fieldref_info structure as defined in
59 * section 4.4.2 of <i>The Java Virtual Machine Specification</i>.
60 *
61 * @author Brian S O'Neill
62 * @version
63 * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 9/07/00 <!-- $-->
64 */
65 public class ConstantFieldInfo extends ConstantInfo {
66 private ConstantClassInfo mParentClass;
67 private ConstantNameAndTypeInfo mNameAndType;
68
69 /**
70 * Will return either a new ConstantFieldInfo object or one already in
71 * the constant pool. If it is a new ConstantFieldInfo, it will be inserted
72 * into the pool.
73 */
74 static ConstantFieldInfo make(ConstantPool cp,
75 ConstantClassInfo parentClass,
76 ConstantNameAndTypeInfo nameAndType) {
77 ConstantInfo ci = new ConstantFieldInfo(parentClass, nameAndType);
78 return (ConstantFieldInfo)cp.addConstant(ci);
79 }
80
81 ConstantFieldInfo(ConstantClassInfo parentClass,
82 ConstantNameAndTypeInfo nameAndType) {
83 super(TAG_FIELD);
84
85 mParentClass = parentClass;
86 mNameAndType = nameAndType;
87 }
88
89 public ConstantClassInfo getParentClass() {
90 return mParentClass;
91 }
92
93 public ConstantNameAndTypeInfo getNameAndType() {
94 return mNameAndType;
95 }
96
97 public int hashCode() {
98 return mNameAndType.hashCode();
99 }
100
101 public boolean equals(Object obj) {
102 if (obj instanceof ConstantFieldInfo) {
103 ConstantFieldInfo other = (ConstantFieldInfo)obj;
104 return (mParentClass.equals(other.mParentClass) &&
105 mNameAndType.equals(other.mNameAndType));
106 }
107
108 return false;
109 }
110
111 public void writeTo(DataOutput dout) throws IOException {
112 super.writeTo(dout);
113 dout.writeShort(mParentClass.getIndex());
114 dout.writeShort(mNameAndType.getIndex());
115 }
116
117 public String toString() {
118 StringBuffer buf = new StringBuffer("CONSTANT_Fieldref_info: ");
119
120 ConstantClassInfo parent = getParentClass();
121
122 buf.append(parent.getClassName());
123 for (int i = parent.getDimensions(); i > 0; i--) {
124 buf.append('[');
125 buf.append(']');
126 }
127
128 ConstantNameAndTypeInfo cnati = getNameAndType();
129
130 buf.append(' ');
131 buf.append(cnati.getName());
132 buf.append(' ');
133 buf.append(cnati.getType());
134
135 return buf.toString();
136 }
137 }