@SuppressWarnings({"rawtypes", "unchecked"})
    private int handleQuotedString(String input, int pos, LinkedList linkedList) {
      String quoteChar = input.substring(pos, pos + 1);
      int nextSingleQuotePos = input.indexOf(quoteChar, pos + 1);
      if (nextSingleQuotePos < 0) {
        throw new IllegalArgumentException("Missing an end quote");
      }
      String result = input.substring(pos, nextSingleQuotePos + 1);
      linkedList.add(result);
      return nextSingleQuotePos + 1;
    }
convert in-fix expression to post-fix.

@param tokenizer tokenizer.
@return post-fix expression.
olv-core/src/main/java/pl/otros/logview/accept/query/org/apache/log4j/rule/InFixToPostFix.java