Examples of com.sun.jdi.StackFrame

com.sun.jdi.StackFrame
The state of one method invocation on a thread's call stack. As a thread executes, stack frames are pushed and popped from its call stack as methods are invoked and then return. A StackFrame mirrors one such frame from a target VM at some point in its thread's execution. The call stack is, then, simply a List of StackFrame objects. The call stack can be obtained any time a thread is suspended through a call to {@link ThreadReference#frames}
StackFrames provide access to a method's local variables and their current values.
The lifetime of a StackFrame is very limited. It is available only for suspended threads and becomes invalid once its thread is resumed.
Any method on StackFrame which takes StackFrame as an parameter may throw {@link com.sun.jdi.VMDisconnectedException} if the target VM isdisconnected and the {@link com.sun.jdi.event.VMDisconnectEvent} has been or isavailable to be read from the {@link com.sun.jdi.event.EventQueue}.
Any method on StackFrame which takes StackFrame as an parameter may throw {@link com.sun.jdi.VMOutOfMemoryException} if the target VM has run out of memory. @author Robert Field @author Gordon Hirsch @author James McIlree @since 1.3


        LocalVariable var = (LocalVariable) method.variables().get( 0 );//frame


        ClassType frameType = (ClassType) var.type();


        StackFrame frame = getUnderlyingStackFrame();
        Value value = frame.getValue( var );
        //getThread().getTopStackFrame().get


        //IValue value = jdivar.getValue();
        ObjectReferenceImpl o = (ObjectReferenceImpl) value;

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                                  -1 );
                }
                int newFrames = newSize - oldSize; // number of frames to create, if any
                int depth = oldSize;
                for ( int i = newFrames - 1; i >= 0; i-- ) {
                    StackFrame currentFrame = (StackFrame) frames.get( i );
                    JDIStackFrame customFrame = createCustomFrame( this,
                                                                   depth,
                                                                   currentFrame );


                    fStackFrames.add( 0,
                                      customFrame );


                    depth++;
                }
                int numToRebind = Math.min( newSize,
                                            oldSize ); // number of frames to attempt to rebind
                int offset = newSize - 1;
                for ( depth = 0; depth < numToRebind; depth++ ) {
                    DroolsStackFrame oldFrame = (DroolsStackFrame) fStackFrames.get( offset );
                    StackFrame frame = (StackFrame) frames.get( offset );
                    DroolsStackFrame newFrame = (DroolsStackFrame) oldFrame.bind( frame,
                                                                                  depth );
                    if ( newFrame != oldFrame ) {
                        fStackFrames.set( offset,
                                          newFrame );

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        LocalVariable var = (LocalVariable) method.variables().get( 0 );//frame


        ClassType frameType = (ClassType) var.type();


        StackFrame frame = getUnderlyingStackFrame();
        Value value = frame.getValue( var );
        //getThread().getTopStackFrame().get


        //IValue value = jdivar.getValue();
        ObjectReferenceImpl o = (ObjectReferenceImpl) value;

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        return getLast(eThread);
      
      eStackFrame=getLast(eThread).getStackFrame();
      }
    
    StackFrame stackFrame = frames.get(index);
    
    EStackFrameLocation ret=new EStackFrameLocation();
    ret.setStackFrame(eStackFrame);
    ret.setLineNumber(stackFrame.location().lineNumber());
    
    if(eStackFrame==null)
      {
      eStackFrame=new EStackFrame();
      ret.setStackFrame(eStackFrame);
      eStackFrame.setThread(eThread);
      eStackFrame.setDepth(frames.size()-index);
      eStackFrame.setMethod(createQueryMethod(stackFrame.location().method()));
      
      if(stackFrame.thisObject()!=null)
        eStackFrame.setThisObject(createQueryObjectReference(stackFrame.thisObject()));
      
      index++;
      if(index<frames.size())
        {
        eStackFrame.setPreviousStackFrameLocation(getStackFrameLocation(eThread, frames, index));
        }
      
      try
        {
        eStackFrame.setSourceName(stackFrame.location().sourceName());
        }
      catch (AbsentInformationException e)
        {
        System.out.println(e.getClass().getName() );
        }

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      lastLocations.get(eThread.getName()).getDepth()==frames.size()-index)
      {
      return lastLocations.get(eThread.getName());
      }
    
    StackFrame stackFrame = frames.get(index);
    EStackFrame ret=new EStackFrame();
    ret.setThread(eThread);
    ret.setDepth(frames.size()-index);
    ret.setMethod(createQueryMethod(stackFrame.location().method()));
    
    if(stackFrame.thisObject()!=null)
      ret.setThisObject(createQueryObjectReference(stackFrame.thisObject()));
    
    index++;
    if(index<frames.size())
      {
      ret.setPreviousStackFrame(getStackFrame(eThread, frames, index));

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    List<String> result = new ArrayList<String>();
    SuspendThreadStack threadStack = SuspendThreadStack.getInstance();
    try {
      List<StackFrame> frames = threadRef.frames();
      for (int i=0; i<frames.size(); i++) {
        StackFrame frame = frames.get(i);
        Location loc = frame.location();
        String name = loc.declaringType().name() + "."
            + loc.method().name();
        String frameInfo = name + " line: " + loc.lineNumber();
        if (i == threadStack.getCurFrame()) {
          frameInfo = frameInfo + "  (current frame) ";

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        value = vm.mirrorOf((String)obj);
      } else {
        value = (Value)obj;
      }
      
      StackFrame stackFrame = threadRef.frame(threadStack.getCurFrame());
      LocalVariable localVariable;
      localVariable = stackFrame.visibleVariableByName(name);
      if (localVariable != null) {
        stackFrame.setValue(localVariable, value);
      } else {
        ObjectReference thisObj = stackFrame.thisObject();
        if (thisObj == null) {
          return "can't find field or variable with name '"+name+"'";
        }
        ReferenceType refType = thisObj.referenceType();
        Field field = refType.fieldByName(name);

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  public static String fields() {
    ThreadReference threadRef = checkAndGetCurrentThread();
    SuspendThreadStack threadStack = SuspendThreadStack.getInstance();
    StringBuilder sb = new StringBuilder();
    try {
      StackFrame stackFrame = threadRef.frame(threadStack.getCurFrame());
      ObjectReference thisObj = stackFrame.thisObject();
      Map<Field, Value> values = thisObj.getValues(thisObj.referenceType().visibleFields());
      List<String> fieldNames = new ArrayList<String>();
      for (Field field : values.keySet()) {
        fieldNames.add(field.name());
      }

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  private static Value evalJdiVar(String name) {
    ThreadReference threadRef = checkAndGetCurrentThread();
    try {
      SuspendThreadStack threadStack = SuspendThreadStack.getInstance();
      StackFrame stackFrame = threadRef.frame(threadStack.getCurFrame());
      ObjectReference thisObj = stackFrame.thisObject();
      Value value = findValueInFrame(threadRef, name, thisObj);
      return value;
    } catch (IncompatibleThreadStateException e) {
      throw new ExpressionEvalException("eval expression error, caused by : " + e.getMessage());
    }

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      ObjectReference thisObj)  {
    
    Value value = null;
    try {
      SuspendThreadStack threadStack = SuspendThreadStack.getInstance();
      StackFrame stackFrame = threadRef.frame(threadStack.getCurFrame());
      
      LocalVariable localVariable;
      localVariable = stackFrame.visibleVariableByName(name);
      if (localVariable != null) {
        return stackFrame.getValue(localVariable);
      }
      
      ReferenceType refType = stackFrame.location().declaringType();
      if (thisObj != null ) {
        refType = thisObj.referenceType();
      }
      Field field = refType.fieldByName(name);
      if (field == null ) {

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