*/
@Override
ICSSDocument parse() throws IOException
{
final List<ICompilerProblem> problems = new ArrayList<ICompilerProblem>();
final CSSDocument css = CSSDocument.parse(new ANTLRFileStream(cssFileName), problems);
if (!problems.isEmpty())
throw new ProblemParsingCSSRuntimeException(problems);
if (css != null)
return css;
return EMPTY_CSS_DOCUMENT;