void loadFromEditor(@NotNull Editor editor) {
    assertDispatchThread();
    LOG.assertTrue(!editor.isDisposed());
    clear();

    PsiDocumentManager documentManager = PsiDocumentManager.getInstance(myProject);
    documentManager.commitDocument(editor.getDocument());
    PsiFile file = documentManager.getPsiFile(editor.getDocument());

    SmartPointerManager smartPointerManager = SmartPointerManager.getInstance(myProject);
    EditorFoldingInfo info = EditorFoldingInfo.get(editor);
    FoldRegion[] foldRegions = editor.getFoldingModel().getAllFoldRegions();
    for (FoldRegion region : foldRegions) {
      if (!region.isValid()) continue;
      PsiElement element = info.getPsiElement(region);
      boolean expanded = region.isExpanded();
      boolean collapseByDefault =
          element != null
              && FoldingPolicy.isCollapseByDefault(element)
              && !FoldingUtil.caretInsideRange(editor, TextRange.create(region));
      if (collapseByDefault == expanded || element == null) {
        FoldingInfo fi = new FoldingInfo(region.getPlaceholderText(), expanded);
        if (element != null) {
          myPsiElements.add(smartPointerManager.createSmartPsiElementPointer(element, file));
          element.putUserData(FOLDING_INFO_KEY, fi);
        } else if (region.isValid()) {
          myRangeMarkers.add(region);
          region.putUserData(FOLDING_INFO_KEY, fi);
        }
      }
    }
  }
 @NotNull
 public String getText() {
   RangeHighlighterEx highlighter = this.highlighter;
   if (highlighter == null) throw new RuntimeException("info not applied yet");
   if (!highlighter.isValid()) return "";
   return highlighter.getDocument().getText(TextRange.create(highlighter));
 }
 public boolean changesRange(TextRange range) {
   if (myAltFullRange != null) {
     return range.intersects(myAltFullRange.getStartOffset(), myAltFullRange.getEndOffset());
   } else if (!myMarkers.isEmpty()) {
     TextRange hostRange =
         TextRange.create(
             myMarkers.get(0).first.getStartOffset(),
             myMarkers.get(myMarkers.size() - 1).first.getEndOffset());
     return range.intersects(hostRange);
   }
   return false;
 }
  private List<PostponedAction> normalizeAndReorderPostponedActions(
      final TreeSet<PostprocessFormattingTask> rangesToProcess, Document document) {
    final List<PostprocessFormattingTask> freeFormatingActions =
        new ArrayList<PostprocessFormattingTask>();
    final List<ReindentTask> indentActions = new ArrayList<ReindentTask>();

    PostprocessFormattingTask accumulatedTask = null;
    Iterator<PostprocessFormattingTask> iterator = rangesToProcess.iterator();
    while (iterator.hasNext()) {
      final PostprocessFormattingTask currentTask = iterator.next();
      if (accumulatedTask == null) {
        accumulatedTask = currentTask;
        iterator.remove();
      } else if (accumulatedTask.getStartOffset() > currentTask.getEndOffset()
          || accumulatedTask.getStartOffset() == currentTask.getEndOffset()
              && !canStickActionsTogether(accumulatedTask, currentTask)) {
        // action can be pushed
        if (accumulatedTask instanceof ReindentTask) {
          indentActions.add((ReindentTask) accumulatedTask);
        } else {
          freeFormatingActions.add(accumulatedTask);
        }

        accumulatedTask = currentTask;
        iterator.remove();
      } else if (accumulatedTask instanceof ReformatTask && currentTask instanceof ReindentTask) {
        // split accumulated reformat range into two
        if (accumulatedTask.getStartOffset() < currentTask.getStartOffset()) {
          final RangeMarker endOfRange =
              document.createRangeMarker(
                  accumulatedTask.getStartOffset(), currentTask.getStartOffset());
          // add heading reformat part
          rangesToProcess.add(new ReformatTask(endOfRange));
          // and manage heading whitespace because formatter does not edit it in previous action
          iterator = rangesToProcess.iterator();
          //noinspection StatementWithEmptyBody
          while (iterator.next().getRange() != currentTask.getRange()) ;
        }
        final RangeMarker rangeToProcess =
            document.createRangeMarker(currentTask.getEndOffset(), accumulatedTask.getEndOffset());
        freeFormatingActions.add(new ReformatWithHeadingWhitespaceTask(rangeToProcess));
        accumulatedTask = currentTask;
        iterator.remove();
      } else {
        if (!(accumulatedTask instanceof ReindentTask)) {
          iterator.remove();

          boolean withLeadingWhitespace =
              accumulatedTask instanceof ReformatWithHeadingWhitespaceTask;
          if (accumulatedTask instanceof ReformatTask
              && currentTask instanceof ReformatWithHeadingWhitespaceTask
              && accumulatedTask.getStartOffset() == currentTask.getStartOffset()) {
            withLeadingWhitespace = true;
          } else if (accumulatedTask instanceof ReformatWithHeadingWhitespaceTask
              && currentTask instanceof ReformatTask
              && accumulatedTask.getStartOffset() < currentTask.getStartOffset()) {
            withLeadingWhitespace = false;
          }
          int newStart = Math.min(accumulatedTask.getStartOffset(), currentTask.getStartOffset());
          int newEnd = Math.max(accumulatedTask.getEndOffset(), currentTask.getEndOffset());
          RangeMarker rangeMarker;

          if (accumulatedTask.getStartOffset() == newStart
              && accumulatedTask.getEndOffset() == newEnd) {
            rangeMarker = accumulatedTask.getRange();
          } else if (currentTask.getStartOffset() == newStart
              && currentTask.getEndOffset() == newEnd) {
            rangeMarker = currentTask.getRange();
          } else {
            rangeMarker = document.createRangeMarker(newStart, newEnd);
          }

          if (withLeadingWhitespace) {
            accumulatedTask = new ReformatWithHeadingWhitespaceTask(rangeMarker);
          } else {
            accumulatedTask = new ReformatTask(rangeMarker);
          }
        } else if (currentTask instanceof ReindentTask) {
          iterator.remove();
        } // TODO[ik]: need to be fixed to correctly process indent inside indent
      }
    }
    if (accumulatedTask != null) {
      if (accumulatedTask instanceof ReindentTask) {
        indentActions.add((ReindentTask) accumulatedTask);
      } else {
        freeFormatingActions.add(accumulatedTask);
      }
    }

    final List<PostponedAction> result = new ArrayList<PostponedAction>();
    Collections.reverse(freeFormatingActions);
    Collections.reverse(indentActions);

    if (!freeFormatingActions.isEmpty()) {
      FormatTextRanges ranges = new FormatTextRanges();
      for (PostprocessFormattingTask action : freeFormatingActions) {
        TextRange range = TextRange.create(action);
        ranges.add(range, action instanceof ReformatWithHeadingWhitespaceTask);
      }
      result.add(new ReformatRangesAction(ranges));
    }

    if (!indentActions.isEmpty()) {
      ReindentRangesAction reindentRangesAction = new ReindentRangesAction();
      for (ReindentTask action : indentActions) {
        reindentRangesAction.add(action.getRange(), action.getOldIndent());
      }
      result.add(reindentRangesAction);
    }

    return result;
  }