private int storeExpressionVals()

in core/src/main/java/com/jetbrains/youtrackdb/internal/core/schedule/CronExpression.java [498:681]

• 174 lines of code
• 68 McCabe index (conditional complexity)

  private int storeExpressionVals(int pos, String s, int type) throws ParseException {

    var incr = 0;
    var i = skipWhiteSpace(pos, s);
    if (i >= s.length()) {
      return i;
    }
    var c = s.charAt(i);
    if ((c >= 'A')
        && (c <= 'Z')
        && (!s.equals("L"))
        && (!s.equals("LW"))
        && (!s.matches("^L-[0-9]*[W]?"))) {
      var sub = s.substring(i, i + 3);
      var sval = -1;
      var eval = -1;
      if (type == MONTH) {
        sval = getMonthNumber(sub) + 1;
        if (sval <= 0) {
          throw new ParseException("Invalid Month value: '" + sub + "'", i);
        }
        if (s.length() > i + 3) {
          c = s.charAt(i + 3);
          if (c == '-') {
            i += 4;
            sub = s.substring(i, i + 3);
            eval = getMonthNumber(sub) + 1;
            if (eval <= 0) {
              throw new ParseException("Invalid Month value: '" + sub + "'", i);
            }
          }
        }
      } else if (type == DAY_OF_WEEK) {
        sval = getDayOfWeekNumber(sub);
        if (sval < 0) {
          throw new ParseException("Invalid Day-of-Week value: '" + sub + "'", i);
        }
        if (s.length() > i + 3) {
          c = s.charAt(i + 3);
          if (c == '-') {
            i += 4;
            sub = s.substring(i, i + 3);
            eval = getDayOfWeekNumber(sub);
            if (eval < 0) {
              throw new ParseException("Invalid Day-of-Week value: '" + sub + "'", i);
            }
          } else if (c == '#') {
            try {
              i += 4;
              nthdayOfWeek = Integer.parseInt(s.substring(i));
              if (nthdayOfWeek < 1 || nthdayOfWeek > 5) {
                throw new Exception();
              }
            } catch (Exception e) {
              LogManager.instance()
                  .error(this, "Exception is suppressed, original exception is ", e);
              //noinspection ThrowInsideCatchBlockWhichIgnoresCaughtException
              throw new ParseException(
                  "A numeric value between 1 and 5 must follow the '#' option", i);
            }
          } else if (c == 'L') {
            lastdayOfWeek = true;
            i++;
          }
        }

      } else {
        throw new ParseException("Illegal characters for this position: '" + sub + "'", i);
      }
      if (eval != -1) {
        incr = 1;
      }
      addToSet(sval, eval, incr, type);
      return (i + 3);
    }

    if (c == '?') {
      i++;
      if ((i + 1) < s.length() && (s.charAt(i) != ' ' && s.charAt(i + 1) != '\t')) {
        throw new ParseException("Illegal character after '?': " + s.charAt(i), i);
      }
      if (type != DAY_OF_WEEK && type != DAY_OF_MONTH) {
        throw new ParseException("'?' can only be specfied for Day-of-Month or Day-of-Week.", i);
      }
      if (type == DAY_OF_WEEK && !lastdayOfMonth) {
        int val = daysOfMonth.last();
        if (val == NO_SPEC_INT) {
          throw new ParseException(
              "'?' can only be specfied for Day-of-Month -OR- Day-of-Week.", i);
        }
      }

      addToSet(NO_SPEC_INT, -1, 0, type);
      return i;
    }

    if (c == '*' || c == '/') {
      if (c == '*' && (i + 1) >= s.length()) {
        addToSet(ALL_SPEC_INT, -1, incr, type);
        return i + 1;
      } else if (c == '/'
          && ((i + 1) >= s.length() || s.charAt(i + 1) == ' ' || s.charAt(i + 1) == '\t')) {
        throw new ParseException("'/' must be followed by an integer", i);
      } else if (c == '*') {
        i++;
      }
      c = s.charAt(i);
      if (c == '/') { // is an increment specified?
        i++;
        if (i >= s.length()) {
          throw new ParseException("Unexpected end of string", i);
        }

        incr = getNumericValue(s, i);

        i++;
        if (incr > 10) {
          i++;
        }
        if (incr > 59 && (type == SECOND || type == MINUTE)) {
          throw new ParseException("Increment > 60 : " + incr, i);
        } else if (incr > 23 && (type == HOUR)) {
          throw new ParseException("Increment > 24 : " + incr, i);
        } else if (incr > 31 && (type == DAY_OF_MONTH)) {
          throw new ParseException("Increment > 31 : " + incr, i);
        } else if (incr > 7 && (type == DAY_OF_WEEK)) {
          throw new ParseException("Increment > 7 : " + incr, i);
        } else if (incr > 12 && (type == MONTH)) {
          throw new ParseException("Increment > 12 : " + incr, i);
        }
      } else {
        incr = 1;
      }

      addToSet(ALL_SPEC_INT, -1, incr, type);
      return i;
    } else if (c == 'L') {
      i++;
      if (type == DAY_OF_MONTH) {
        lastdayOfMonth = true;
      }
      if (type == DAY_OF_WEEK) {
        addToSet(7, 7, 0, type);
      }
      if (type == DAY_OF_MONTH && s.length() > i) {
        c = s.charAt(i);
        if (c == '-') {
          var vs = getValue(0, s, i + 1);
          lastdayOffset = vs.value;
          if (lastdayOffset > 30) {
            throw new ParseException("Offset from last day must be <= 30", i + 1);
          }
          i = vs.pos;
        }
        if (s.length() > i) {
          c = s.charAt(i);
          if (c == 'W') {
            nearestWeekday = true;
            i++;
          }
        }
      }
      return i;
    } else if (c >= '0' && c <= '9') {
      var val = Integer.parseInt(String.valueOf(c));
      i++;
      if (i >= s.length()) {
        addToSet(val, -1, -1, type);
      } else {
        c = s.charAt(i);
        if (c >= '0' && c <= '9') {
          var vs = getValue(val, s, i);
          val = vs.value;
          i = vs.pos;
        }
        i = checkNext(i, s, val, type);
        return i;
      }
    } else {
      throw new ParseException("Unexpected character: " + c, i);
    }

    return i;
  }