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Java > Open Source Codes > soot > jimple > toolkits > pointer > nativemethods > JavaLangThrowableNative


1 /* Soot - a J*va Optimization Framework
2  * Copyright (C) 2003 Feng Qian
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with this library; if not, write to the
16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17  * Boston, MA 02111-1307, USA.
18  */

19
20 /**
21  * Simulates the native method side effects in class java.lang.Throwable
22  *
23  * @author Feng Qian
24  * @author <XXX>
25  */

26
27 package soot.jimple.toolkits.pointer.nativemethods;
28
29 import soot.*;
30 import soot.jimple.toolkits.pointer.representations.*;
31 import soot.jimple.toolkits.pointer.util.*;
32
33 public class JavaLangThrowableNative extends NativeMethodClass {
34     public JavaLangThrowableNative( NativeHelper helper ) { super(helper); }
35
36   /**
37    * Implements the abstract method simulateMethod.
38    * It distributes the request to the corresponding methods
39    * by signatures.
40    */

41   public void simulateMethod(SootMethod method,
42                  ReferenceVariable thisVar,
43                  ReferenceVariable returnVar,
44                  ReferenceVariable params[]){
45
46     String JavaDoc subSignature = method.getSubSignature();
47
48     if (subSignature.equals("java.lang.Throwable fillInStackTrace()")) {
49       java_lang_Throwable_fillInStackTrace(method, thisVar,
50                        returnVar, params);
51       return;
52
53     } else {
54       defaultMethod(method, thisVar, returnVar, params);
55       return;
56
57     }
58   }
59   /************************** java.lang.Throwable *******************/
60   /**
61    * NOTE: this method just fills in the stack state in this throwable
62    * object content.
63    *
64    * public native java.lang.Throwable fillInStackTrace();
65    */

66   public
67     void java_lang_Throwable_fillInStackTrace(SootMethod method,
68                           ReferenceVariable thisVar,
69                           ReferenceVariable returnVar,
70                           ReferenceVariable params[]) {
71     helper.assign(returnVar, thisVar);
72   }
73
74   /**
75    * NO side effects.
76    *
77    * private native void printStackTrace0(java.lang.Object);
78    */

79
80 }
81
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