public class MyDQLContentFormatterFactory extends ContentFormatterFactory {

	@Inject
	private XtextResource resource;

	public class MyDSLContentFormatter implements IContentFormatter {
		public void format(IDocument document, IRegion region) {

			// if formatting is performed with errors, the code will be destroyed
			if (!resource.getErrors().isEmpty()) {
				return;
			}

			new ContentFormatter().format(document, region);
		}

		public IFormattingStrategy getFormattingStrategy(String contentType) {
			return null;
		}
	}

	@Override
	public IContentFormatter createConfiguredFormatter(SourceViewerConfiguration configuration, ISourceViewer sourceViewer) {
		return new MyDSLContentFormatter();
	}
}

	@Override
	public Class<? extends IContentFormatterFactory> bindIContentFormatterFactory() {
		return MyDQLContentFormatterFactory.class;
	}

public class MyDslNodeModelFormatter extends DefaultNodeModelFormatter {
	
	@Override
	public IFormattedRegion format(ICompositeNode root, int offset, int length) {
		Resource eResource = NodeModelUtils.findActualSemanticObjectFor(root).eResource();
		if (eResource.getErrors().size() > 0) {
			return new FormattedRegion(0, 0, "");
		}
		return super.format(root, offset, length);
	}

}

	public Class<? extends INodeModelFormatter> bindINodeModelFormatter() {
		return MyDslNodeModelFormatter.class;
	}