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Java > Open Source Codes > org > aspectj > debugger > request > AbstractStepRequest


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 import com.sun.jdi.request.*;
29 import java.util.*;
30
31 /**
32  * AbstractStopRequest.java
33  *
34  *
35  * Created: Fri Aug 25 11:23:46 2000
36  *
37  * @author <a HREF="mailto:palm@parc.xerox.com"Jeffrey Palm</a>
38  */
39
40 public abstract class AbstractStepRequest extends Request {
41     public AbstractStepRequest (Debugger debugger) {
42         super(debugger);
43     }
44
45     public Object JavaDoc go() throws NoVMException, DebuggerException {
46         EventRequestManager mgr = null;
47         try {
48             mgr = vm().eventRequestManager();
49         } catch (NoVMException nvme) {
50             return null;
51         } catch (NullPointerException JavaDoc npe) {
52             return null;
53         }
54         ThreadReference threadRef = dbg().getStoppedThread();
55         List steps = mgr.stepRequests();
56         for (int i = 0; i < steps.size(); i++) {
57             StepRequest request = (StepRequest) steps.get(i);
58             if (request.thread().equals(threadRef)) {
59                 mgr.deleteEventRequest(request);
60             }
61         }
62         StepRequest request = mgr.createStepRequest(threadRef,
63                                                     getSize(),
64                                                     getDepth());
65         request.putProperty("name", name());
66         request.addCountFilter(1);
67         request.setSuspendPolicy(EventRequest.SUSPEND_ALL);
68         request.enable();
69         dbg().addExcludesTo(request);
70         //vm().resume();
71 //dbg().resume(threadRef);
72 dbg().resumeUntilZero(threadRef);
73         return request;
74     }
75
76     abstract int getDepth();
77     abstract int getSize();
78     abstract String JavaDoc name();
79 }
80
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