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1 /* -*- Mode: JDE; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2  *
3  * This file is part of the debugger and core tools for the AspectJ(tm)
4  * programming language; see http://aspectj.org
5  *
6  * The contents of this file are subject to the Mozilla Public License
7  * Version 1.1 (the "License"); you may not use this file except in
8  * compliance with the License. You may obtain a copy of the License at
9  * either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the
14  * License.
15  *
16  * The Original Code is AspectJ.
17  *
18  * The Initial Developer of the Original Code is Xerox Corporation. Portions
19  * created by Xerox Corporation are Copyright (C) 1999-2002 Xerox Corporation.
20  * All Rights Reserved.
21  */
22
23 package org.aspectj.debugger.request;
24
25 import org.aspectj.debugger.base.*;
26
27 import com.sun.jdi.*;
28
29 /**
30  * Request.java
31  *
32  *
33  * Created: Wed Aug 23 14:06:43 2000
34  *
35  * @author <a HREF="mailto:palm@parc.xerox.com"Jeffrey Palm</a>
36  */
37
38 public abstract class Request {
39
40     protected Debugger debugger;
41
42     protected boolean debug = true;
43     protected void db(Object JavaDoc o) {
44         if (debug)
45             System.out.println("... " + o);
46     }
47
48     public Request(Debugger debugger) {
49         this.debugger = debugger;
50     }
51
52     public Request() {
53         this(null);
54     }
55
56     public abstract Object JavaDoc go() throws NoVMException, DebuggerException;
57
58     public /*abstract*/ String JavaDoc getErrorMessage() {
59         return "no error message";
60     }
61
62     protected VirtualMachine vm() throws NoVMException {
63         return debugger.getVM();
64     }
65
66     protected Debugger dbg() {
67         return debugger;
68     }
69
70     protected AJDebugger ajdbg() {
71         return (AJDebugger) debugger;
72     }
73
74     protected boolean isEmpty(String JavaDoc str) {
75         return str == null || str.trim().equals("");
76     }
77
78     public void setDebugger(Debugger debugger) {
79         this.debugger = debugger;
80     }
81
82     public Debugger getDebugger() {
83         return debugger;
84     }
85 }
86
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