/// <summary>
/// Evalates the ExDate component, and excludes each specified DateTime or
/// Period from the <see cref="Periods"/> collection.
/// </summary>
/// <param name="FromDate">The beginning date of the range to evaluate.</param>
/// <param name="ToDate">The end date of the range to evaluate.</param>
virtual protected void EvaluateExDate(IDateTime referenceDate, DateTime periodStart, DateTime periodEnd)
{
// Handle EXDATEs
if (Recurrable.ExceptionDates != null)
{
foreach (IPeriodList exdate in Recurrable.ExceptionDates)
{
IEvaluator evaluator = exdate.GetService(typeof(IEvaluator)) as IEvaluator;
if (evaluator != null)
{
var periods = evaluator.Evaluate(referenceDate, periodStart, periodEnd, false);
Periods.ExceptWith(periods);
foreach (IPeriod p in periods)
{
// If no time was provided for the ExDate, then it excludes the entire day
if (!p.StartTime.HasTime || (p.EndTime != null && !p.EndTime.HasTime))
{
p.MatchesDateOnly = true;
}
}
}
}
}
}
/// <summary>
/// Evalates the ExDate component, and excludes each specified DateTime or Period from the Periods collection.
/// </summary>
/// <param name="referenceDate"></param>
/// <param name="periodStart">The beginning date of the range to evaluate.</param>
/// <param name="periodEnd">The end date of the range to evaluate.</param>
virtual protected void EvaluateExDate(IDateTime referenceDate, DateTime periodStart, DateTime periodEnd)
{
// Handle EXDATEs
if (Recurrable.ExceptionDates == null)
{
return;
}
foreach (var exdate in Recurrable.ExceptionDates)
{
var evaluator = exdate.GetService(typeof(IEvaluator)) as IEvaluator;
if (evaluator == null)
{
continue;
}
var periods = evaluator.Evaluate(referenceDate, periodStart, periodEnd, false);
foreach (var p in periods.Where(p => !p.StartTime.HasTime || (p.EndTime != null && !p.EndTime.HasTime)))
{
p.MatchesDateOnly = true;
}
Periods.ExceptWith(periods);
}
}
/// <summary>
/// Evaulates the ExRule component, and excludes each specified DateTime from the Periods collection.
/// </summary>
/// <param name="referenceDate"></param>
/// <param name="periodStart">The beginning date of the range to evaluate.</param>
/// <param name="periodEnd">The end date of the range to evaluate.</param>
protected virtual void EvaluateExRule(IDateTime referenceDate, DateTime periodStart, DateTime periodEnd)
{
if (Recurrable.ExceptionRules == null)
{
return;
}
var excluded =
Recurrable.ExceptionRules.Select(rule => rule.GetService(typeof(IEvaluator)) as IEvaluator)
.Where(evaluator => evaluator != null)
.SelectMany(evaluator => evaluator.Evaluate(referenceDate, periodStart, periodEnd, false))
.ToList();
Periods.ExceptWith(excluded);
}
/// <summary>
/// Evaulates the ExRule component, and excludes each specified DateTime
/// from the <see cref="Periods"/> collection.
/// </summary>
/// <param name="FromDate">The beginning date of the range to evaluate.</param>
/// <param name="ToDate">The end date of the range to evaluate.</param>
virtual protected void EvaluateExRule(IDateTime referenceDate, DateTime periodStart, DateTime periodEnd)
{
// Handle EXRULEs
if (Recurrable.ExceptionRules != null)
{
foreach (IRecurrencePattern exrule in Recurrable.ExceptionRules)
{
IEvaluator evaluator = exrule.GetService(typeof(IEvaluator)) as IEvaluator;
if (evaluator != null)
{
var periods = evaluator.Evaluate(referenceDate, periodStart, periodEnd, false);
Periods.ExceptWith(periods);
}
}
}
}
public override HashSet <Period> Evaluate(IDateTime referenceDate, DateTime periodStart, DateTime periodEnd, bool includeReferenceDateInResults)
{
// Evaluate extra time periods, without re-evaluating ones that were already evaluated
if ((EvaluationStartBounds == DateTime.MaxValue && EvaluationEndBounds == DateTime.MinValue) || periodEnd.Equals(EvaluationStartBounds) ||
periodStart.Equals(EvaluationEndBounds))
{
//Exclusions take precedence over inclusions, so build the master set, then subtract the exclusions from it
var rruleOccurrences = EvaluateRRule(referenceDate, periodStart, periodEnd, includeReferenceDateInResults);
if (includeReferenceDateInResults)
{
rruleOccurrences.UnionWith(new [] { new Period(referenceDate), });
}
var rdateOccurrences = EvaluateRDate(referenceDate, periodStart, periodEnd);
var exRuleExclusions = EvaluateExRule(referenceDate, periodStart, periodEnd);
var exDateExclusions = EvaluateExDate(referenceDate, periodStart, periodEnd);
Periods.UnionWith(rruleOccurrences);
Periods.UnionWith(rdateOccurrences);
Periods.ExceptWith(exRuleExclusions);
Periods.ExceptWith(exDateExclusions);
if (EvaluationStartBounds == DateTime.MaxValue || EvaluationStartBounds > periodStart)
{
EvaluationStartBounds = periodStart;
}
if (EvaluationEndBounds == DateTime.MinValue || EvaluationEndBounds < periodEnd)
{
EvaluationEndBounds = periodEnd;
}
}
else
{
if (EvaluationStartBounds != DateTime.MaxValue && periodStart < EvaluationStartBounds)
{
Evaluate(referenceDate, periodStart, EvaluationStartBounds, includeReferenceDateInResults);
}
if (EvaluationEndBounds != DateTime.MinValue && periodEnd > EvaluationEndBounds)
{
Evaluate(referenceDate, EvaluationEndBounds, periodEnd, includeReferenceDateInResults);
}
}
return(Periods);
}
/// <summary>
/// Evalates the ExDate component, and excludes each specified DateTime or Period from the Periods collection.
/// </summary>
/// <param name="referenceDate"></param>
/// <param name="periodStart">The beginning date of the range to evaluate.</param>
/// <param name="periodEnd">The end date of the range to evaluate.</param>
protected virtual void EvaluateExDate(IDateTime referenceDate, DateTime periodStart, DateTime periodEnd)
{
if (Recurrable.ExceptionDates == null || !Recurrable.ExceptionDates.Any())
{
return;
}
var evaluator = Recurrable.ExceptionDates.First().GetService(typeof(IEvaluator)) as IEvaluator;
if (evaluator == null)
{
return;
}
var periods = evaluator.Evaluate(referenceDate, periodStart, periodEnd, true);
Periods.ExceptWith(periods);
}
/// <summary>
/// Evalates the ExDate component, and excludes each specified DateTime or Period from the Periods collection.
/// </summary>
/// <param name="referenceDate"></param>
/// <param name="periodStart">The beginning date of the range to evaluate.</param>
/// <param name="periodEnd">The end date of the range to evaluate.</param>
protected virtual void EvaluateExDate(IDateTime referenceDate, DateTime periodStart, DateTime periodEnd)
{
if (Recurrable.ExceptionDates == null || !Recurrable.ExceptionDates.Any())
{
return;
}
var evaluator = Recurrable.ExceptionDates.First().GetService(typeof(IEvaluator)) as IEvaluator;
if (evaluator == null)
{
return;
}
var periods = evaluator.Evaluate(referenceDate, periodStart, periodEnd, false);
foreach (var p in periods.Where(p => !p.StartTime.HasTime || (p.EndTime != null && !p.EndTime.HasTime)))
{
p.MatchesDateOnly = true;
}
Periods.ExceptWith(periods);
}
public override HashSet <Period> Evaluate(IDateTime referenceDate, DateTime periodStart, DateTime periodEnd, bool includeReferenceDateInResults)
{
Periods.Clear();
var rruleOccurrences = EvaluateRRule(referenceDate, periodStart, periodEnd, includeReferenceDateInResults);
//Only add referenceDate if there are no RecurrenceRules defined
if (includeReferenceDateInResults && (Recurrable.RecurrenceRules == null || !Recurrable.RecurrenceRules.Any()))
{
rruleOccurrences.UnionWith(new[] { new Period(referenceDate), });
}
var rdateOccurrences = EvaluateRDate(referenceDate, periodStart, periodEnd);
var exRuleExclusions = EvaluateExRule(referenceDate, periodStart, periodEnd);
var exDateExclusions = EvaluateExDate(referenceDate, periodStart, periodEnd);
//Exclusions trump inclusions
Periods.UnionWith(rruleOccurrences);
Periods.UnionWith(rdateOccurrences);
Periods.ExceptWith(exRuleExclusions);
Periods.ExceptWith(exDateExclusions);
var dateOverlaps = FindDateOverlaps(exDateExclusions);
Periods.ExceptWith(dateOverlaps);
if (EvaluationStartBounds == DateTime.MaxValue || EvaluationStartBounds > periodStart)
{
EvaluationStartBounds = periodStart;
}
if (EvaluationEndBounds == DateTime.MinValue || EvaluationEndBounds < periodEnd)
{
EvaluationEndBounds = periodEnd;
}
return(Periods);
}
