/**
* Print the faulty source code line and point to the error.
*
* @param pos Buffer index of the error position, must be on current line
*/
private void printErrLine(int pos, PrintWriter writer) {
String line = (source == null ? null : source.getLine(pos));
if (line == null) return;
int col = source.getColumnNumber(pos, false);
printRawLines(writer, line);
for (int i = 0; i < col - 1; i++) {
writer.print((line.charAt(i) == '\t') ? "\t" : " ");
}
writer.println("^");
writer.flush();
}
