OVLVisitor.OVLVisitorException, ParseException {
BufferedReader read = new BufferedReader(new InputStreamReader(in));
/* read */
linesRead = 0;
OVLSymbol sym = readOVLSymbol(read);
while (!eof) {
if (sym != null) {
// add symbol to parse tree
sym.apply(parseresult);
}
// read next symbol
sym = readOVLSymbol(read);
}