////////////////////////////////////////////////////////////////////////////
//
// 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();
}
var exprOn = SECOND;
var exprsTok = expression.Trim().Split(new[] { ' ', '\t', '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
foreach (var exprTok in exprsTok)
{
var 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 == DAY_OF_MONTH && 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 == DAY_OF_WEEK && 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");
}
var vTok = expr.Split(',');
foreach (var v in vTok)
{
StoreExpressionVals(0, v, exprOn);
}
exprOn++;
}
if (exprOn <= DAY_OF_WEEK)
{
throw new FormatException("Unexpected end of expression.");
}
if (exprOn <= YEAR)
{
StoreExpressionVals(0, "*", YEAR);
}
var dow = GetSet(DAY_OF_WEEK);
var dom = GetSet(DAY_OF_MONTH);
// Copying the logic from the UnsupportedOperationException below
var dayOfMSpec = !dom.Contains(NO_SPEC);
var dayOfWSpec = !dow.Contains(NO_SPEC);
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();
var i = 0;
while ((i < Count) && (_comparator.Compare(this[i], limit) < 0))
{
i++;
}
for (; i < Count; i++)
{
newList.Add(this[i]);
}
return newList;
}
