void performValidation(IFile f, IReporter reporter, IStructuredModel model, boolean inBatch) {
    if (model instanceof IDOMModel) {
      IDOMModel domModel = (IDOMModel) model;
      JsTranslationAdapterFactory.setupAdapterFactory(domModel);
      IDOMDocument xmlDoc = domModel.getDocument();
      JsTranslationAdapter translationAdapter =
          (JsTranslationAdapter) xmlDoc.getAdapterFor(IJsTranslation.class);
      // translationAdapter.resourceChanged();
      IJsTranslation translation = translationAdapter.getJsTranslation(false);
      if (!reporter.isCancelled()) {
        translation.setProblemCollectingActive(true);
        translation.reconcileCompilationUnit();
        List problems = translation.getProblems();
        // only update task markers if the model is the same as what's on disk
        boolean updateTasks = !domModel.isDirty() && f != null && f.isAccessible();
        if (updateTasks) {
          // remove old JavaScript task markers
          try {
            IMarker[] foundMarkers =
                f.findMarkers(JAVASCRIPT_TASK_MARKER_TYPE, true, IResource.DEPTH_ONE);
            for (int i = 0; i < foundMarkers.length; i++) {
              foundMarkers[i].delete();
            }
          } catch (CoreException e) {
            Logger.logException(e);
          }
        }

        //				if(!inBatch) reporter.removeAllMessages(this, f);
        // add new messages
        for (int i = 0; i < problems.size() && !reporter.isCancelled(); i++) {
          IProblem problem = (IProblem) problems.get(i);
          IMessage m =
              createMessageFromProblem(problem, f, translation, domModel.getStructuredDocument());
          if (m != null) {
            if (problem.getID() == IProblem.Task) {
              if (updateTasks) {
                // add new JavaScript task marker
                try {
                  IMarker task = f.createMarker(JAVASCRIPT_TASK_MARKER_TYPE);
                  task.setAttribute(IMarker.LINE_NUMBER, new Integer(m.getLineNumber()));
                  task.setAttribute(IMarker.CHAR_START, new Integer(m.getOffset()));
                  task.setAttribute(IMarker.CHAR_END, new Integer(m.getOffset() + m.getLength()));
                  task.setAttribute(IMarker.MESSAGE, m.getText());
                  task.setAttribute(IMarker.USER_EDITABLE, Boolean.FALSE);

                  switch (m.getSeverity()) {
                    case IMessage.HIGH_SEVERITY:
                      {
                        task.setAttribute(IMarker.PRIORITY, new Integer(IMarker.PRIORITY_HIGH));
                        task.setAttribute(IMarker.SEVERITY, new Integer(IMarker.SEVERITY_ERROR));
                      }
                      break;
                    case IMessage.LOW_SEVERITY:
                      {
                        task.setAttribute(IMarker.PRIORITY, new Integer(IMarker.PRIORITY_LOW));
                        task.setAttribute(IMarker.SEVERITY, new Integer(IMarker.SEVERITY_INFO));
                      }
                      break;
                    default:
                      {
                        task.setAttribute(IMarker.PRIORITY, new Integer(IMarker.PRIORITY_NORMAL));
                        task.setAttribute(IMarker.SEVERITY, new Integer(IMarker.SEVERITY_WARNING));
                      }
                  }
                } catch (CoreException e) {
                  Logger.logException(e);
                }
              }
            } else {
              reporter.addMessage(fMessageOriginator, m);
            }
          }
        }
      }
    }
  }