Mercurial > hg > blitz_condensed
comparison src/com/go/trove/classfile/ConstantClassInfo.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.io.*; | |
56 | |
57 /****************************************************************************** | |
58 * This class corresponds to the CONSTANT_Class_info structure as defined in | |
59 * section 4.4.1 of <i>The Java Virtual Machine Specification</i>. | |
60 * | |
61 * @author Brian S O'Neill | |
62 * @version | |
63 * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 01/05/14 <!-- $--> | |
64 */ | |
65 public class ConstantClassInfo extends ConstantInfo { | |
66 private String mClassName; | |
67 private int mDim; | |
68 private TypeDescriptor mType; | |
69 | |
70 private ConstantUTFInfo mNameConstant; | |
71 | |
72 /** | |
73 * Will return either a new ConstantClassInfo object or one already in | |
74 * the constant pool. If it is a new ConstantClassInfo, it will be inserted | |
75 * into the pool. | |
76 */ | |
77 static ConstantClassInfo make(ConstantPool cp, String className) { | |
78 ConstantInfo ci = new ConstantClassInfo(cp, className); | |
79 return (ConstantClassInfo)cp.addConstant(ci); | |
80 } | |
81 | |
82 /** Used to describe an array class. */ | |
83 static ConstantClassInfo make(ConstantPool cp, | |
84 String className, int dim) { | |
85 ConstantInfo ci = new ConstantClassInfo(cp, className, dim); | |
86 return (ConstantClassInfo)cp.addConstant(ci); | |
87 } | |
88 | |
89 static ConstantClassInfo make(ConstantPool cp, | |
90 TypeDescriptor type) { | |
91 ConstantInfo ci = new ConstantClassInfo(cp, type); | |
92 return (ConstantClassInfo)cp.addConstant(ci); | |
93 } | |
94 | |
95 ConstantClassInfo(ConstantUTFInfo nameConstant) { | |
96 super(TAG_CLASS); | |
97 mNameConstant = nameConstant; | |
98 String name = nameConstant.getValue(); | |
99 if (!name.endsWith(";") && !name.startsWith("[")) { | |
100 mClassName = name.replace('/', '.'); | |
101 mDim = 0; | |
102 } | |
103 else { | |
104 TypeDescriptor desc = TypeDescriptor.parseTypeDesc(name); | |
105 mClassName = desc.getClassName(); | |
106 mDim = desc.getDimensions(); | |
107 } | |
108 } | |
109 | |
110 private ConstantClassInfo(ConstantPool cp, String className) { | |
111 super(TAG_CLASS); | |
112 | |
113 mClassName = className; | |
114 mDim = 0; | |
115 | |
116 String desc = className.replace('.', '/'); | |
117 mNameConstant = ConstantUTFInfo.make(cp, desc); | |
118 } | |
119 | |
120 /** Used to describe an array class. */ | |
121 private ConstantClassInfo(ConstantPool cp, String className, int dim) { | |
122 super(TAG_CLASS); | |
123 | |
124 mClassName = className; | |
125 mDim = dim; | |
126 | |
127 String desc; | |
128 if (dim > 0) { | |
129 desc = TypeDescriptor.generate(className, dim); | |
130 } | |
131 else { | |
132 desc = className.replace('.', '/'); | |
133 } | |
134 | |
135 mNameConstant = ConstantUTFInfo.make(cp, desc); | |
136 } | |
137 | |
138 private ConstantClassInfo(ConstantPool cp, TypeDescriptor type) { | |
139 super(TAG_CLASS); | |
140 | |
141 mClassName = type.getClassName(); | |
142 mDim = type.getDimensions(); | |
143 mType = type; | |
144 | |
145 String desc; | |
146 if (mDim > 0) { | |
147 desc = type.toString(); | |
148 } | |
149 else { | |
150 desc = type.getClassName().replace('.', '/'); | |
151 } | |
152 | |
153 mNameConstant = ConstantUTFInfo.make(cp, desc); | |
154 } | |
155 | |
156 public String getClassName() { | |
157 return mClassName; | |
158 } | |
159 | |
160 public int getDimensions() { | |
161 return mDim; | |
162 } | |
163 | |
164 public TypeDescriptor getTypeDescriptor() { | |
165 if (mType == null) { | |
166 mType = new TypeDescriptor(getClassName()); | |
167 | |
168 int dim = getDimensions(); | |
169 if (dim > 0) { | |
170 mType = new TypeDescriptor(mType, dim); | |
171 } | |
172 } | |
173 | |
174 return mType; | |
175 } | |
176 | |
177 public int hashCode() { | |
178 return mClassName.hashCode(); | |
179 } | |
180 | |
181 public boolean equals(Object obj) { | |
182 if (obj instanceof ConstantClassInfo) { | |
183 ConstantClassInfo other = (ConstantClassInfo)obj; | |
184 return mClassName.equals(other.mClassName) && mDim == other.mDim; | |
185 } | |
186 | |
187 return false; | |
188 } | |
189 | |
190 public void writeTo(DataOutput dout) throws IOException { | |
191 super.writeTo(dout); | |
192 dout.writeShort(mNameConstant.getIndex()); | |
193 } | |
194 | |
195 public String toString() { | |
196 StringBuffer buf = new StringBuffer("CONSTANT_Class_info: "); | |
197 buf.append(getClassName()); | |
198 for (int i = getDimensions(); i > 0; i--) { | |
199 buf.append('['); | |
200 buf.append(']'); | |
201 } | |
202 return buf.toString(); | |
203 } | |
204 } |