private void benchmarkParse(String file) throws Exception{
String readSource = readFile(new File(getPackagePath(), file));
String source = readSource.toString();
char[] chars = source.toCharArray();
LineMap map = Position.makeLineMap(chars, chars.length, false);
System.err.println(map.hashCode());
ANTLRStringStream input = new ANTLRStringStream(source);
CeylonLexer lexer = new CeylonLexer(input);
CommonTokenStream tokens = new CommonTokenStream(lexer);