Clover coverage report - brownies library - 1.0-beta-1 Coverage timestamp: 月 8 16 2004 17:14:42 GMT+09:00 FRAMES NO FRAMES |
file stats: | LOC: | 247 |  | Methods: | 6
| NCLOC: | 115 |  | Classes: | 1
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Source file | Conditionals | Statements | Methods | TOTAL
InvocationInfo.java | 55% | 78.3% | 100% | 71.3% |

1 |  |
     /*
2 |  |
      * Joey and its relative products are published under the terms
3 |  |
      * of the Apache Software License.
4 |  |
      */
5 |  |
6 |  |
     package org.asyrinx.brownie.core.lang;
7 |  |
8 |  |
     import java.io.PrintWriter;
9 |  |
     import java.io.StringWriter;
10 |  |
11 |  |
     /**
12 |  |
      * @author akima
13 |  |
      */
14 |  |
     public class InvocationInfo implements java.io.Serializable {
15 |  |
16 |  |
         /**
17 |  |
          * Caller's line number.
18 |  |
          */
19 |  |
         transient String lineNumber;
20 |  |
21 |  |
         /**
22 |  |
          * Caller's file name.
23 |  |
          */
24 |  |
         transient String fileName;
25 |  |
26 |  |
         /**
27 |  |
          * Caller's fully qualified class name.
28 |  |
          */
29 |  |
         transient String className;
30 |  |
31 |  |
         /**
32 |  |
          * Caller's method name.
33 |  |
          */
34 |  |
         transient String methodName;
35 |  |
36 |  |
         // Note that the line.separator property can be looked up even by
37 |  |
         // applets.
38 |  |
         private final static String LINE_SEP = System.getProperty("line.separator");
39 |  |
40 |  |
         private final static int LINE_SEP_LEN = LINE_SEP.length();
41 |  |
42 |  |
         /**
43 |  |
          * All available caller information, in the format
44 |  |
          * <code>fully.qualified.classname.of.caller.methodName(Filename.java:line)</code>
45 |  |
          */
46 |  |
         public String fullInfo;
47 |  |
48 |  |
         private static StringWriter sw = new StringWriter();
49 |  |
50 |  |
         private static PrintWriter pw = new PrintWriter(sw);
51 |  |
52 |  |
         /**
53 |  |
          * When location information is not available the constant <code>NA</code>
54 |  |
          * is returned. Current value of this string constant is <b>? </b>.
55 |  |
          */
56 |  |
         public final static String NA = "?";
57 |  |
58 |  |
         static final long serialVersionUID = -1325822038990805636L;
59 |  |
60 |  |
         // Check if we are running in IBM's visual age.
61 |  |
         static boolean inVisualAge = false;
62 |  |
         static {
63 | 2 |
             try {
64 |  |
                 //Class dummy = Class.forName("com.ibm.uvm.tools.DebugSupport");
65 | 2 |
                 Class.forName("com.ibm.uvm.tools.DebugSupport");
66 | 0 |
                 inVisualAge = true;
67 | 0 |
                 System.out.println("Detected IBM VisualAge environment.");
68 |  |
             } catch (Throwable e) {
69 |  |
                 // nothing to do
70 |  |
             }
71 |  |
         }
72 |  |
73 | 10 |
         public InvocationInfo(String fqnOfCallingClass) {
74 | 10 |
             this(new Exception(), fqnOfCallingClass);
75 |  |
         }
76 |  |
77 |  |
         /**
78 |  |
          * Instantiate location information based on a Throwable. We expect the
79 |  |
          * Throwable <code>t</code>, to be in the format
80 |  |
          *
81 |  |
          * <pre>
82 |  |
          *
83 |  |
          *      java.lang.Throwable
84 |  |
          *      ...
85 |  |
          *      at org.apache.log4j.PatternLayout.format(PatternLayout.java:413)
86 |  |
          *      at org.apache.log4j.FileAppender.doAppend(FileAppender.java:183)
87 |  |
          *      at org.apache.log4j.Category.callAppenders(Category.java:131)
88 |  |
          *      at org.apache.log4j.Category.log(Category.java:512)
89 |  |
          *      at callers.fully.qualified.className.methodName(FileName.java:74)
90 |  |
          *      ...
91 |  |
          *
92 |  |
          * </pre>
93 |  |
          *
94 |  |
          * <p>
95 |  |
          * However, we can also deal with JIT compilers that "lose" the location
96 |  |
          * information, especially between the parentheses.
97 |  |
          *
98 |  |
          */
99 | 10 |
         public InvocationInfo(Throwable t, String fqnOfCallingClass) {
100 | 10 |
             if (t == null)
101 | 0 |
                 return;
102 |  |
103 | 10 |
             String s;
104 |  |
             // Protect against multiple access to sw.
105 | 10 |
             synchronized (sw) {
106 | 10 |
                 t.printStackTrace(pw);
107 | 10 |
                 s = sw.toString();
108 | 10 |
                 sw.getBuffer().setLength(0);
109 |  |
             }
110 |  |
             //System.out.println("s is ["+s+"].");
111 |  |
112 |  |
             //int ibegin, iend;
113 |  |
114 |  |
             // Given the current structure of the package, the line
115 |  |
             // containing "org.apache.log4j.Category." should be printed just
116 |  |
             // before the caller.
117 |  |
118 |  |
             // This method of searching may not be fastest but it's safer
119 |  |
             // than counting the stack depth which is not guaranteed to be
120 |  |
             // constant across JVM implementations.
121 | 10 |
             int ibegin = s.lastIndexOf(fqnOfCallingClass);
122 | 10 |
             if (ibegin == -1)
123 | 0 |
                 return;
124 |  |
125 | 10 |
             ibegin = s.indexOf(LINE_SEP, ibegin);
126 | 10 |
             if (ibegin == -1)
127 | 0 |
                 return;
128 | 10 |
             ibegin += LINE_SEP_LEN;
129 |  |
130 |  |
             // determine end of line
131 | 10 |
             int iend = s.indexOf(LINE_SEP, ibegin);
132 | 10 |
             if (iend == -1)
133 | 0 |
                 return;
134 |  |
135 |  |
             // VA has a different stack trace format which doesn't
136 |  |
             // need to skip the inital 'at'
137 | 10 |
             if (!inVisualAge) {
138 |  |
                 // back up to first blank character
139 | 10 |
                 ibegin = s.lastIndexOf("at ", iend);
140 | 10 |
                 if (ibegin == -1)
141 | 0 |
                     return;
142 |  |
                 // Add 3 to skip "at ";
143 | 10 |
                 ibegin += 3;
144 |  |
             }
145 |  |
             // everything between is the requested stack item
146 | 10 |
             this.fullInfo = s.substring(ibegin, iend);
147 |  |
         }
148 |  |
149 |  |
         /**
150 |  |
          * Return the fully qualified class name of the caller making the logging
151 |  |
          * request.
152 |  |
          */
153 | 10 |
         public String getClassName() {
154 | 10 |
             if (fullInfo == null)
155 | 0 |
                 return NA;
156 | 10 |
             if (className == null) {
157 |  |
                 // Starting the search from '(' is safer because there is
158 |  |
                 // potentially a dot between the parentheses.
159 | 10 |
                 int iend = fullInfo.lastIndexOf('(');
160 | 10 |
                 if (iend == -1)
161 | 0 |
                     className = NA;
162 |  |
                 else {
163 | 10 |
                     iend = fullInfo.lastIndexOf('.', iend);
164 |  |
165 |  |
                     // This is because a stack trace in VisualAge looks like:
166 |  |
167 |  |
                     //java.lang.RuntimeException
168 |  |
                     //  java.lang.Throwable()
169 |  |
                     //  java.lang.Exception()
170 |  |
                     //  java.lang.RuntimeException()
171 |  |
                     //  void test.test.B.print()
172 |  |
                     //  void test.test.A.printIndirect()
173 |  |
                     //  void test.test.Run.main(java.lang.String [])
174 | 10 |
                     int ibegin = 0;
175 | 10 |
                     if (inVisualAge) {
176 | 0 |
                         ibegin = fullInfo.lastIndexOf(' ', iend) + 1;
177 |  |
                     }
178 |  |
179 | 10 |
                     if (iend == -1)
180 | 0 |
                         className = NA;
181 |  |
                     else
182 | 10 |
                         className = this.fullInfo.substring(ibegin, iend);
183 |  |
                 }
184 |  |
             }
185 | 10 |
             return className;
186 |  |
         }
187 |  |
188 |  |
         /**
189 |  |
          * Return the file name of the caller.
190 |  |
          *
191 |  |
          * <p>
192 |  |
          * This information is not always available.
193 |  |
          */
194 | 5 |
         public String getFileName() {
195 | 5 |
             if (fullInfo == null)
196 | 0 |
                 return NA;
197 |  |
198 | 5 |
             if (fileName == null) {
199 | 5 |
                 int iend = fullInfo.lastIndexOf(':');
200 | 5 |
                 if (iend == -1)
201 | 3 |
                     fileName = NA;
202 |  |
                 else {
203 | 2 |
                     int ibegin = fullInfo.lastIndexOf('(', iend - 1);
204 | 2 |
                     fileName = this.fullInfo.substring(ibegin + 1, iend);
205 |  |
                 }
206 |  |
             }
207 | 5 |
             return fileName;
208 |  |
         }
209 |  |
210 |  |
         /**
211 |  |
          * Returns the line number of the caller.
212 |  |
          *
213 |  |
          * <p>
214 |  |
          * This information is not always available.
215 |  |
          */
216 | 5 |
         public String getLineNumber() {
217 | 5 |
             if (fullInfo == null)
218 | 0 |
                 return NA;
219 |  |
220 | 5 |
             if (lineNumber == null) {
221 | 5 |
                 int iend = fullInfo.lastIndexOf(')');
222 | 5 |
                 int ibegin = fullInfo.lastIndexOf(':', iend - 1);
223 | 5 |
                 if (ibegin == -1)
224 | 3 |
                     lineNumber = NA;
225 |  |
                 else
226 | 2 |
                     lineNumber = this.fullInfo.substring(ibegin + 1, iend);
227 |  |
             }
228 | 5 |
             return lineNumber;
229 |  |
         }
230 |  |
231 |  |
         /**
232 |  |
          * Returns the method name of the caller.
233 |  |
          */
234 | 5 |
         public String getMethodName() {
235 | 5 |
             if (fullInfo == null)
236 | 0 |
                 return NA;
237 | 5 |
             if (methodName == null) {
238 | 5 |
                 int iend = fullInfo.lastIndexOf('(');
239 | 5 |
                 int ibegin = fullInfo.lastIndexOf('.', iend);
240 | 5 |
                 if (ibegin == -1)
241 | 0 |
                     methodName = NA;
242 |  |
                 else
243 | 5 |
                     methodName = this.fullInfo.substring(ibegin + 1, iend);
244 |  |
             }
245 | 5 |
             return methodName;
246 |  |
         }
247 |  |
     }