Source Code Cross Referenced for MemberLoader.java in  » 6.0-JDK-Modules » j2me » jcc » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » 6.0 JDK Modules » j2me » jcc 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *   
003:         *
004:         * Copyright  1990-2007 Sun Microsystems, Inc. All Rights Reserved.
005:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
006:         * 
007:         * This program is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU General Public License version
009:         * 2 only, as published by the Free Software Foundation.
010:         * 
011:         * This program is distributed in the hope that it will be useful, but
012:         * WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014:         * General Public License version 2 for more details (a copy is
015:         * included at /legal/license.txt).
016:         * 
017:         * You should have received a copy of the GNU General Public License
018:         * version 2 along with this work; if not, write to the Free Software
019:         * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020:         * 02110-1301 USA
021:         * 
022:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
023:         * Clara, CA 95054 or visit www.sun.com if you need additional
024:         * information or have any questions.
025:         */
026:
027:        package jcc;
028:
029:        import java.io.PrintStream;
030:        import java.io.InputStream;
031:        import java.io.StreamTokenizer;
032:        import java.io.IOException;
033:        import java.util.Hashtable;
034:        import java.util.Vector;
035:        import java.util.Enumeration;
036:        import util.*;
037:        import components.*;
038:        import util.ClassFile;
039:
040:        /*
041:         * MemberLoader is the Jld subsystem
042:         * which processes the -memberlist option.
043:         * It reads the named file,
044:         * it causes class files to be read if necessary,
045:         * it manipulates the ClassInfo structures
046:         * by marking members to be included.
047:         * and finally it expunges all references to unwanted members.
048:         */
049:
050:        public class MemberLoader {
051:            String fname;
052:            StreamTokenizer in;
053:            ClassFileFinder finder;
054:            ClassReader rdr;
055:
056:            public MemberLoader(ClassReader r, ClassFileFinder f) {
057:                rdr = r;
058:                finder = f;
059:            }
060:
061:            private ClassInfo enterClass(String classname, Vector v) {
062:                ClassInfo ce;
063:                classname = classname.intern();
064:                ce = components.ClassInfo.lookupClass(classname);
065:                if (ce != null)
066:                    return ce;
067:
068:                if (rdr.readClass(classname, finder, v) != 1) {
069:                    //could not find anywhere.
070:                    System.err.println(Localizer.getString(
071:                            "memberloader.could_not_find_class", classname));
072:                    return null; // or worse...
073:                }
074:                ce = (ClassInfo) (v.lastElement());
075:                //
076:                // we know that this was loaded on account of us.
077:                // unlike most classes, this one will start life
078:                // as empty, with no members assumed.
079:                ce.flags &= ~(ClassInfo.INCLUDE_ALL);
080:                ce.clearMemberFlags(ClassMemberInfo.INCLUDE);
081:                return ce;
082:            }
083:
084:            private boolean enterMember(ClassInfo ce, String name) {
085:                if ((ce.flags & ClassInfo.INCLUDE_ALL) != 0) {
086:                    return true; // doesn't matter what we do anyway!
087:                }
088:                ClassMemberInfo t[];
089:                String sig;
090:                // determine if this is data or method by looking
091:                // at the signature, or lack thereof.
092:                int sigstart = name.indexOf('(');
093:                if (sigstart == -1) {
094:                    // this is data.
095:                    // too bad we cannot use the standard procedure
096:                    // that  components/FMIrefConstant.find() uses,
097:                    // but we cannot because the hash ID requires
098:                    // data type signature information, which we lack.
099:                    t = ce.fields;
100:                    sig = null;
101:                } else {
102:                    // this is code.
103:                    //
104:                    sig = name.substring(sigstart);
105:                    name = name.substring(0, sigstart);
106:                    t = ce.methods;
107:                }
108:                int l = t.length;
109:                for (int i = 0; i < l; i++) {
110:                    if (t[i].name.string.equals(name)) {
111:                        if ((sig == null) || sig.equals(t[i].type.string)) {
112:                            t[i].flags |= ClassMemberInfo.INCLUDE;
113:                            return true; // done.
114:                        }
115:                    }
116:                }
117:                System.err.println(Localizer.getString(
118:                        "memberloader.could_not_find_member", ce.className,
119:                        name));
120:                return false;
121:            }
122:
123:            private void openStream(String name) throws IOException {
124:                fname = name;
125:                in = new StreamTokenizer(new java.io.BufferedInputStream(
126:                        new java.io.FileInputStream(fname)));
127:                in.resetSyntax();
128:                in.eolIsSignificant(true);
129:                in.whitespaceChars(0, 0x20);
130:                in.wordChars('!', '~');
131:                in.commentChar('#');
132:                in.ordinaryChar('.');
133:
134:            }
135:
136:            private void oops(String lmsg) throws DataFormatException {
137:                String errmsg = Localizer.getString(
138:                        "memberloader.dependence_file_error_near_line", fname,
139:                        Integer.toString(in.lineno()));
140:                if (lmsg != null) {
141:                    errmsg += Localizer.getString(lmsg);
142:                }
143:                in = null; // when we bail, close the file.
144:                throw new DataFormatException(errmsg);
145:            }
146:
147:            /*
148:             * Read output of JavaFilter
149:             */
150:            public void readFromFile(String fname, Vector classlist)
151:                    throws DataFormatException, IOException {
152:                int t;
153:                openStream(fname);
154:                while ((t = in.nextToken()) != StreamTokenizer.TT_EOF) {
155:                    /*
156:                     * Process a line of input. It may be empty
157:                     * or contain only a comment.
158:                     * Else there must be a class name.
159:                     * If the class name is followed by a .,
160:                     * then a member name follows. The name
161:                     * will include a signature, if a method is named.
162:                     * No signature is needed for data members.
163:                     */
164:                    if (t == StreamTokenizer.TT_EOL)
165:                        continue;
166:                    String className;
167:                    String memberName;
168:                    String sig;
169:                    if (t != StreamTokenizer.TT_WORD)
170:                        oops("memberloader.missing_classname");
171:                    className = in.sval;
172:                    ClassInfo ce = enterClass(className, classlist);
173:                    if ((t = in.nextToken()) == StreamTokenizer.TT_EOL) {
174:                        continue; // class name only
175:                    }
176:                    if (t != '.') {
177:                        oops("memberloader.syntax_error");
178:                        continue;
179:                    }
180:                    if ((t = in.nextToken()) != StreamTokenizer.TT_WORD) {
181:                        oops("memberloader.malformed_member_name");
182:                        continue;
183:                    }
184:                    memberName = in.sval;
185:                    /*
186:                     * Now that we've read the names, process it.
187:                     */
188:                    if (ce != null)
189:                        enterMember(ce, memberName);
190:
191:                    if (in.nextToken() != StreamTokenizer.TT_EOL)
192:                        oops("memberloader.extra_material");
193:                }
194:                in = null; // close the file.
195:            }
196:
197:            /*
198:             * Traverse the class list.
199:             * Delete unneeded methods!!
200:             */
201:
202:            private int deleteMembers(ClassMemberInfo mlist[]) {
203:                if (mlist == null || mlist.length == 0)
204:                    return 0; // trivial case.
205:                int n = mlist.length;
206:                int ndeleted = 0;
207:                for (int i = 0; i < n; i++) {
208:                    if ((mlist[i].flags & ClassMemberInfo.INCLUDE) == 0) {
209:                        mlist[i].index = -1; // obvious error value.
210:                        mlist[i] = null;
211:                        ndeleted += 1;
212:                    }
213:                }
214:                return ndeleted;
215:            }
216:
217:            private static void copyNonNull(ClassMemberInfo from[],
218:                    ClassMemberInfo to[]) {
219:                int n = from.length;
220:                int j = 0;
221:                for (int i = 0; i < n; i++) {
222:                    if (from[i] != null) {
223:                        from[i].index = j;
224:                        to[j++] = from[i];
225:                    }
226:                }
227:            }
228:
229:            private void loadMembers(ClassInfo ci) {
230:                int ndeleted = deleteMembers(ci.methods);
231:                if (ndeleted != 0) {
232:                    int n = ci.methods.length;
233:                    MethodInfo newlist[] = new MethodInfo[n - ndeleted];
234:                    copyNonNull(ci.methods, newlist);
235:                    ci.methods = newlist;
236:                }
237:                ndeleted = deleteMembers(ci.fields);
238:                if (ndeleted != 0) {
239:                    int n = ci.fields.length;
240:                    FieldInfo newlist[] = new FieldInfo[n - ndeleted];
241:                    copyNonNull(ci.fields, newlist);
242:                    ci.fields = newlist;
243:                }
244:            }
245:
246:            /*
247:             * This is serious!
248:             * Iterate through all our classes.
249:             * Look at all the members
250:             * When I see one that doesn't have isLoaded set,
251:             * just delete it!
252:             */
253:            public void deleteUnwantedMembers(Vector classes) {
254:                Enumeration e = classes.elements();
255:                while (e.hasMoreElements()) {
256:                    ClassInfo ci = (ClassInfo) e.nextElement();
257:                    if ((ci.flags & ClassInfo.INCLUDE_ALL) != 0)
258:                        continue; // a fully-loaded class.
259:                    loadMembers(ci);
260:                }
261:            }
262:
263:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.