////////////////////////////////////////////////////////////////////////////
//
// Expression Parsing Functions
//
////////////////////////////////////////////////////////////////////////////
/// <summary>
/// Builds the expression.
/// </summary>
/// <param name="expression">The expression.</param>
protected void BuildExpression(string expression) {
expressionParsed = true;
try {
if (seconds == null) {
seconds = new TreeSet();
}
if (minutes == null) {
minutes = new TreeSet();
}
if (hours == null) {
hours = new TreeSet();
}
if (daysOfMonth == null) {
daysOfMonth = new TreeSet();
}
if (months == null) {
months = new TreeSet();
}
if (daysOfWeek == null) {
daysOfWeek = new TreeSet();
}
if (years == null) {
years = new TreeSet();
}
int exprOn = Second;
#if NET_20
string[] exprsTok = expression.Trim().Split(new char[] { ' ', '\t', '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
#else
string[] exprsTok = expression.Trim().Split(new char[] { ' ', '\t', '\r', '\n' });
#endif
foreach (string exprTok in exprsTok) {
string expr = exprTok.Trim();
if (expr.Length == 0) {
continue;
}
if (exprOn > Year) {
break;
}
// throw an exception if L is used with other days of the month
if (exprOn == DayOfMonth && expr.IndexOf('L') != -1 && expr.Length > 1 && expr.IndexOf(",") >= 0) {
throw new FormatException("Support for specifying 'L' and 'LW' with other days of the month is not implemented");
}
// throw an exception if L is used with other days of the week
if (exprOn == DayOfWeek && expr.IndexOf('L') != -1 && expr.Length > 1 && expr.IndexOf(",") >= 0) {
throw new FormatException("Support for specifying 'L' with other days of the week is not implemented");
}
string[] vTok = expr.Split(',');
foreach (string v in vTok) {
StoreExpressionVals(0, v, exprOn);
}
exprOn++;
}
if (exprOn <= DayOfWeek) {
throw new FormatException("Unexpected end of expression.");
}
if (exprOn <= Year) {
StoreExpressionVals(0, "*", Year);
}
TreeSet dow = GetSet(DayOfWeek);
TreeSet dom = GetSet(DayOfMonth);
// Copying the logic from the UnsupportedOperationException below
bool dayOfMSpec = !dom.Contains(NoSpec);
bool dayOfWSpec = !dow.Contains(NoSpec);
if (dayOfMSpec && !dayOfWSpec) {
// skip
}
else if (dayOfWSpec && !dayOfMSpec) {
// skip
}
else {
throw new FormatException("Support for specifying both a day-of-week AND a day-of-month parameter is not implemented.");
}
}
catch (FormatException) {
throw;
}
catch (Exception e) {
throw new FormatException(string.Format(CultureInfo.InvariantCulture, "Illegal cron expression format ({0})", e));
}
}
/// <summary>
/// Returns a portion of the list whose elements are greater than the limit object parameter.
/// </summary>
/// <param name="limit">The start element of the portion to extract.</param>
/// <returns>The portion of the collection whose elements are greater than the limit object parameter.</returns>
public ISortedSet TailSet(object limit) {
ISortedSet newList = new TreeSet();
int i = 0;
while ((i < Count) && (comparator.Compare(this[i], limit) < 0)) {
i++;
}
for (; i < Count; i++) {
newList.Add(this[i]);
}
return newList;
}