KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > sun > org > apache > bcel > internal > verifier > NativeVerifier


1 package com.sun.org.apache.bcel.internal.verifier;
2
3 /* ====================================================================
4  * The Apache Software License, Version 1.1
5  *
6  * Copyright (c) 2001 The Apache Software Foundation. All rights
7  * reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted provided that the following conditions
11  * are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution,
22  * if any, must include the following acknowledgment:
23  * "This product includes software developed by the
24  * Apache Software Foundation (http://www.apache.org/)."
25  * Alternately, this acknowledgment may appear in the software itself,
26  * if and wherever such third-party acknowledgments normally appear.
27  *
28  * 4. The names "Apache" and "Apache Software Foundation" and
29  * "Apache BCEL" must not be used to endorse or promote products
30  * derived from this software without prior written permission. For
31  * written permission, please contact apache@apache.org.
32  *
33  * 5. Products derived from this software may not be called "Apache",
34  * "Apache BCEL", nor may "Apache" appear in their name, without
35  * prior written permission of the Apache Software Foundation.
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 APACHE SOFTWARE FOUNDATION OR
41  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
42  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
43  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
44  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
45  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
46  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
47  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
48  * SUCH DAMAGE.
49  * ====================================================================
50  *
51  * This software consists of voluntary contributions made by many
52  * individuals on behalf of the Apache Software Foundation. For more
53  * information on the Apache Software Foundation, please see
54  * <http://www.apache.org/>.
55  */
56
57 /**
58  * The NativeVerifier class implements a _main(String[] args) method that's
59  * roughly compatible to the one in the Verifier class, but that uses the
60  * JVM's internal verifier for its class file verification.
61  * This can be used for comparison runs between the JVM-internal verifier
62  * and JustIce.
63  *
64  * @version $Id: NativeVerifier.java,v 1.1.1.1 2001/10/29 20:00:31 jvanzyl Exp $
65  * @author <A HREF="http://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A>
66  */
67 public abstract class NativeVerifier{
68
69     /**
70      * This class must not be instantiated.
71      */
72     private NativeVerifier(){
73     }
74     
75     /**
76      * Works only on the first argument.
77      */
78     public static void _main(String JavaDoc [] args){
79         if (args.length != 1){
80             System.out.println("Verifier front-end: need exactly one argument.");
81             System.exit(1);
82         }
83
84         int dotclasspos = args[0].lastIndexOf(".class");
85         if (dotclasspos != -1) args[0] = args[0].substring(0,dotclasspos);
86         args[0] = args[0].replace('/','.');
87         //System.out.println(args[0]);
88
89         
90         try{
91             Class.forName(args[0]);
92         }
93         catch(ExceptionInInitializerError JavaDoc eiie){ //subclass of LinkageError!
94 System.out.println("NativeVerifier: ExceptionInInitializerError encountered on '"+args[0]+"'.");
95             System.out.println(eiie);
96             System.exit(1);
97         }
98         catch(LinkageError JavaDoc le){
99             System.out.println("NativeVerifier: LinkageError encountered on '"+args[0]+"'.");
100             System.out.println(le);
101             System.exit(1);
102         }
103         catch(ClassNotFoundException JavaDoc cnfe){
104             System.out.println("NativeVerifier: FILE NOT FOUND: '"+args[0]+"'.");
105             System.exit(1);
106         }
107         catch(Throwable JavaDoc t){
108             System.out.println("NativeVerifier: Unspecified verification error on'"+args[0]+"'.");
109             System.exit(1);
110         }
111         
112         System.out.println("NativeVerifier: Class file '"+args[0]+"' seems to be okay.");
113         System.exit(0);
114
115     }
116 }
117
Popular Tags