Java 类org.eclipse.xtext.ui.editor.syntaxcoloring.AttributedPosition 实例源码

@Override
public int compare(final AttributedPosition o1, final AttributedPosition o2) {
  if (o1 == null) {
    return o2 == null ? 0 : -1;
  } else if (o2 == null) {
    return 1;
  }
  int res = o1.offset - o2.offset;
  if (res != 0) {
    return res;
  }
  res = o1.length - o2.length;
  if (res != 0) {
    return res;
  }
  if (o1.isDeleted != o2.isDeleted) {
    return o1.isDeleted ? -1 : 1;
  }
  return o1.getHighlighting().hashCode() - o2.getHighlighting().hashCode();
}

/**
 * Reconcile positions based on the AST subtrees
 * 
 * @param subtrees
 *            the AST subtrees
 */
private void reconcilePositions(XtextResource resource) {
    // for (int i= 0, n= subtrees.length; i < n; i++)
    // subtrees[i].accept(fCollector);
    MergingHighlightedPositionAcceptor acceptor = new MergingHighlightedPositionAcceptor(
            calculator);
    acceptor.provideHighlightingFor(resource, this);
    // calculator.provideHighlightingFor(resource, this);
    List<AttributedPosition> oldPositions = removedPositions;
    List<AttributedPosition> newPositions = new ArrayList<AttributedPosition>(
            removedPositionCount);
    for (int i = 0, n = oldPositions.size(); i < n; i++) {
        AttributedPosition current = oldPositions.get(i);
        if (current != null)
            newPositions.add(current);
    }
    removedPositions = newPositions;
}

/**
 * Reconcile positions based on the AST subtrees
 * 
 * @param subtrees
 *            the AST subtrees
 */
private void reconcilePositions(XtextResource resource) {
    // for (int i= 0, n= subtrees.length; i < n; i++)
    // subtrees[i].accept(fCollector);
    MergingHighlightedPositionAcceptor acceptor = new MergingHighlightedPositionAcceptor(
            calculator);
    acceptor.provideHighlightingFor(resource, this);
    // calculator.provideHighlightingFor(resource, this);
    List<AttributedPosition> oldPositions = removedPositions;
    List<AttributedPosition> newPositions = new ArrayList<AttributedPosition>(
            removedPositionCount);
    for (int i = 0, n = oldPositions.size(); i < n; i++) {
        AttributedPosition current = oldPositions.get(i);
        if (current != null)
            newPositions.add(current);
    }
    removedPositions = newPositions;
}

/**
 * Add a position with the given range and highlighting if it does not exist already.
 *
 * @param offset
 *          The range offset
 * @param length
 *          The range length
 * @param highlighting
 *          The highlighting
 */
@Override
public void addPosition(final int offset, final int length, final String... ids) {
  TextAttribute highlighting = ids.length == 1 ? attributeProvider.getAttribute(ids[0]) : attributeProvider.getMergedAttributes(ids);
  AttributedPosition position = presenter.createHighlightedPosition(offset, length, highlighting);
  int idx = positionOrdering.binarySearch(removedPositions, position);
  boolean isExisting = idx >= 0 && removedPositions.get(idx).isEqual(offset, length, highlighting);

  if (isExisting) {
    removedPositions.remove(idx);
  } else {
    addedPositions.add(position);
  }
}

/**
 * Update the presentation.
 * 
 * @param textPresentation
 *            the text presentation
 * @param addedPositions
 *            the added positions
 * @param removedPositions
 *            the removed positions
 */
private void updatePresentation(TextPresentation textPresentation,
        List<AttributedPosition> addedPositions,
        List<AttributedPosition> removedPositions) {
    Runnable runnable = presenter.createUpdateRunnable(textPresentation,
            addedPositions, removedPositions);
    if (runnable == null)
        return;

    Display display = Display.getDefault();
    display.asyncExec(runnable);
}

/**
 * Update the presentation.
 * 
 * @param textPresentation
 *            the text presentation
 * @param addedPositions
 *            the added positions
 * @param removedPositions
 *            the removed positions
 */
private void updatePresentation(TextPresentation textPresentation,
        List<AttributedPosition> addedPositions,
        List<AttributedPosition> removedPositions) {
    Runnable runnable = presenter.createUpdateRunnable(textPresentation,
            addedPositions, removedPositions);
    if (runnable == null)
        return;

    Display display = Display.getDefault();
    display.asyncExec(runnable);
}

/**
 * Update the presentation.
 *
 * @param textPresentation
 *          the text presentation
 * @param addedPositions
 *          the added positions
 * @param removedPositions
 *          the removed positions
 */
private void updatePresentation(final TextPresentation textPresentation, final List<AttributedPosition> addedPositions, final List<AttributedPosition> removedPositions) {
  Runnable runnable = presenter.createUpdateRunnable(textPresentation, addedPositions, removedPositions);
  if (runnable == null) {
    return;
  }

  Display display = getDisplay();
  display.asyncExec(runnable);
}