Step


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33  
34  package edu.rice.cs.drjava.model.debug;
35  
36  import edu.rice.cs.drjava.DrJava;
37  import edu.rice.cs.drjava.config.OptionConstants;
38  import java.util.StringTokenizer  ;
39  
40  import com.sun.jdi.*;
41  import com.sun.jdi.request.*;
42  
43  /** The breakpoint object which has references to its OpenDefinitionsDocument and its StepRequest */
44  public class Step extends DebugAction<StepRequest> implements OptionConstants {
45    private final ThreadReference _thread;
46    private final int _size;
47    private final int _depth;
48  
49    // Java class patterns for which we may not want events
50    private final String  [] _javaExcludes = {"java.*", "javax.*", "sun.*", "com.sun.*", "com.apple.eawt.*", "com.apple.eio.*" };
51  
52    /** @throws IllegalStateException if the document does not have a file */
53    public Step(JPDADebugger manager, int size, int depth)
54      throws DebugException, IllegalStateException   {
55       super (manager);
56      _suspendPolicy = EventRequest.SUSPEND_EVENT_THREAD;
57      _thread = _manager.getCurrentThread();
58      _size = size;
59      _depth = depth;
60      _countFilter = 1; //only step once.
61      _initializeRequests();
62    }
63  
64    //public boolean createRequest(ReferenceType rt) throws DebugException {
65    //  return false;
66    //}
67  
68    /**
69     * Creates an appropriate EventRequest from the EventRequestManager and
70     * stores it in the _request field.
71     * @throws DebugException if the request could not be created.
72     */
73    protected void _createRequests() throws DebugException {
74      boolean stepJava = DrJava.getConfig().getSetting(DEBUG_STEP_JAVA).booleanValue();
75      boolean stepInterpreter = DrJava.getConfig().getSetting(DEBUG_STEP_INTERPRETER).booleanValue();
76      boolean stepDrJava = DrJava.getConfig().getSetting(DEBUG_STEP_DRJAVA).booleanValue();
77      String   exclude = DrJava.getConfig().getSetting(DEBUG_STEP_EXCLUDE);
78  
79      StepRequest request = _manager.getEventRequestManager().
80        createStepRequest(_thread, _size, _depth);
81      if (!stepJava) {
82        for (int i=0; i < _javaExcludes.length; i++) {
83          request.addClassExclusionFilter(_javaExcludes[i]);
84        }
85      }
86      if (!stepInterpreter) {
87        request.addClassExclusionFilter("koala.*");
88      }
89      if (!stepDrJava) {
90        request.addClassExclusionFilter("edu.rice.cs.drjava.*");
91        request.addClassExclusionFilter("edu.rice.cs.util.*");
92      }
93      StringTokenizer   st = new StringTokenizer  (exclude, ",");
94      while (st.hasMoreTokens()) {
95        request.addClassExclusionFilter(st.nextToken().trim());
96      }
97  
98  
99      // Add this request (the only one) to the list
100     _requests.add(request);
101   }
102 
103   public String   toString() { return "Step[thread: " + _thread +  "]"; }
104 }
105
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