Examples of com.sun.jdi.Location

com.sun.jdi.Location
A point within the executing code of the target VM. Locations are used to identify the current position of a suspended thread (analogous to an instruction pointer or program counter register in native programs). They are also used to identify the position at which to set a breakpoint.
The availability of a line number for a location will depend on the level of debugging information available from the target VM.
Several mirror interfaces have locations. Each such mirror extends a {@link Locatable} interface.
Strata
The source information for a Location is dependent on the stratum which is used. A stratum is a source code level within a sequence of translations. For example, say the baz program is written in the programming language "Foo" then translated to the language "Bar" and finally translated into the Java programming language. The Java programming language stratum is named "Java", let's say the other strata are named "Foo" and "Bar". A given location (as viewed by the {@link #sourceName()} and {@link #lineNumber()} methods)might be at line 14 of "baz.foo" in the "Foo" stratum, line 23 of "baz.bar" in the "Bar" stratum and line 71 of the "Java" stratum. Note that while the Java programming language may have only one source file for a reference type, this restriction does not apply to other strata - thus each Location should be consulted to determine its source path. Queries which do not specify a stratum ( {@link #sourceName()}, {@link #sourcePath()} and{@link #lineNumber()}) use the VM's default stratum ( {@link VirtualMachine#getDefaultStratum()}). If the specified stratum (whether explicitly specified by a method parameter or implicitly as the VM's default) is null or is not available in the declaring type, the declaring type's default stratum is used ( {@link #declaringType()}. {@link ReferenceType#defaultStratum() defaultStratum()}). Note that in the normal case, of code that originates as Java programming language source, there will be only one stratum ("Java") and it will be returned as the default. To determine the available strata use {@link ReferenceType#availableStrata()}. @see com.sun.jdi.request.EventRequestManager @see StackFrame @see com.sun.jdi.event.BreakpointEvent @see com.sun.jdi.event.ExceptionEvent @see Locatable @author Robert Field @author Gordon Hirsch @author James McIlree @since 1.3

      setExceptionName(name);
      if (getExclusionClassFilters().length >= 1
          || getInclusionClassFilters().length >= 1
          || filtersIncludeDefaultPackage(fInclusionClassFilters)
          || filtersIncludeDefaultPackage(fExclusionClassFilters)) {
        Location location = ((ExceptionEvent) event).location();
        String typeName = location.declaringType().name();
        boolean defaultPackage = typeName.indexOf('.') == -1;
        boolean included = true;
        String[] filters = getInclusionClassFilters();
        if (filters.length > 0) {
          included = matchesFilters(filters, typeName, defaultPackage);

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        Method method = clazz.concreteMethodByName(getMethodName(),
            getMethodSignature());
        if (method == null) {
          return null;
        }
        Location location = method.location();
        if (location == null || location.codeIndex() == -1) {
          return null;
        }
        BreakpointRequest req = type.virtualMachine()
            .eventRequestManager()
            .createBreakpointRequest(location);

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      return false;
    }
    if (getOriginalStepStackDepth() != getUnderlyingFrameCount()) {
      return false;
    }
    Location origLocation = getOriginalStepLocation();
    if (origLocation == null) {
      return false;
    }
    // We cannot simply check if the two Locations are equal using the
    // equals()
    // method, since this checks the code index within the method. Even if
    // the
    // code indices are different, the line numbers may be the same, in
    // which case
    // we need to do the extra step into.
    Method origMethod = origLocation.method();
    Method currMethod = location.method();
    if (!origMethod.equals(currMethod)) {
      return false;
    }
    if (origLocation.lineNumber() != location.lineNumber()) {
      return false;
    }
    return true;
  }

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        JDIStackFrame top = (JDIStackFrame) getTopStackFrame();
        if (top == null) {
          return;
        }
        setOriginalStepKind(getStepKind());
        Location location = top.getUnderlyingStackFrame().location();
        setOriginalStepLocation(location);
        setOriginalStepStackDepth(computeStackFrames().size());
        setStepRequest(createStepRequest());
        setPendingStepHandler(this);
        addJDIEventListener(this, getStepRequest());

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     *            the request to augment
     */
    protected void attachFiltersToStepRequest(StepRequest request) {


      if (applyStepFilters() && isStepFiltersEnabled()) {
        Location currentLocation = getOriginalStepLocation();
        if (currentLocation == null
            || !JAVA_STRATUM_CONSTANT.equals(currentLocation
                .declaringType().defaultStratum())) {
          return;
        }
        // Removed the fix for bug 5587, to address bug 41510
        // //check if the user has already stopped in a filtered

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     */
    public boolean handleEvent(Event event, JDIDebugTarget target,
        boolean suspendVote, EventSet eventSet) {
      try {
        StepEvent stepEvent = (StepEvent) event;
        Location currentLocation = stepEvent.location();


        if (!target.isStepThruFilters()) {
          if (shouldDoStepReturn()) {
            deleteStepRequest();
            createSecondaryStepRequest(StepRequest.STEP_OUT);

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     *             if an exception occurs
     */
    protected boolean locationShouldBeFiltered(Location location)
        throws DebugException {
      if (applyStepFilters()) {
        Location origLocation = getOriginalStepLocation();
        if (origLocation != null) {
          return !locationIsFiltered(origLocation.method())
              && locationIsFiltered(location.method());
        }
      }
      return false;
    }

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        // mark as invalid
        fDepth = -1;
        fStackFrame = null;
        return null;
      } else if (fDepth == depth) {
        Location location = frame.location();
        Method method = location.method();
        if (method.equals(fLocation.method())) {
          try {
            if (method.declaringType().defaultStratum()
                .equals("Java") || //$NON-NLS-1$
                equals(getSourceName(location),

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        try
        {
            out.println( "Thread: \"" + thread.name() + '"' );
            for ( StackFrame frame : thread.frames() )
            {
                Location location = frame.location();
                StackTraceElement trace = new StackTraceElement( location.declaringType().name(),
                                                                 location.method().name(),
                                                                 sourceFileName( location ),
                                                                 location.lineNumber() );
                out.println( "\tat " + trace );
            }
        }
        catch ( IncompatibleThreadStateException e )
        {

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