/// <summary>
///
/// </summary>
/// <param name="item"></param>
/// <param name="currentResult"></param>
/// <returns></returns>
protected override MatchTerminatorStatus Validate(TSource item, MatchTerminatorResult currentResult)
{
bool result = item.Equals(CurrentTerminator.Current);
if (!result)
{
return(MatchTerminatorStatus.Fail);
}
return(CurrentTerminator.MoveNext() ?
MatchTerminatorStatus.SuccessPartial : MatchTerminatorStatus.Success);
}
/// <summary>
///
/// </summary>
/// <param name="item"></param>
/// <param name="currentResult"></param>
/// <returns></returns>
protected override MatchTerminatorStatus Validate(byte item, MatchTerminatorResult currentResult)
{
bool result = item.Equals(CurrentTerminator.Current);
if (!result)
{
return(MatchTerminatorStatus.Fail);
}
try
{
return(CurrentTerminator.MoveNext() ?
MatchTerminatorStatus.SuccessPartial :
(currentResult.Length == 1 ? MatchTerminatorStatus.SuccessReset : MatchTerminatorStatus.Success));
}
catch (Exception ex)
{
throw ex;
}
}
/// <summary>
///
/// </summary>
/// <param name="item"></param>
/// <param name="currentResult"></param>
/// <returns></returns>
protected override MatchTerminatorStatus Validate(TSource item, MatchTerminatorResult currentResult)
{
bool result = Terminator.Contains(t => t.Equals(item));
return(result ? MatchTerminatorStatus.SuccessPartial : MatchTerminatorStatus.SuccessNoLength);
}
/// <summary>
/// The predicate used to match the source and the match collection. By the default the equals parameter is passed.
/// </summary>
public virtual MatchTerminatorResult Match(IEnumerator <TSource> sourceEnum, Queue <TSource> slidingWindow, long length)
{
MatchTerminatorResult result = new MatchTerminatorResult();
result.Length = 0;
do
{
TSource item;
MatchTerminatorStatus status = MatchTerminatorStatus.Exception;
try
{
item = sourceEnum.Current;
status = mPredicate(item, result);
}
catch (Exception ex)
{
throw ex;
}
try
{
switch (status)
{
case MatchTerminatorStatus.SuccessPartial:
slidingWindow.Enqueue(item);
result.Status = MatchTerminatorStatus.SuccessPartial;
break;
case MatchTerminatorStatus.Success:
case MatchTerminatorStatus.SuccessReset:
case MatchTerminatorStatus.SuccessNoLength:
case MatchTerminatorStatus.SuccessNoLengthReset:
case MatchTerminatorStatus.Fail:
case MatchTerminatorStatus.FailNoLength:
if (CanScan && status == MatchTerminatorStatus.Fail &&
result.Status == MatchTerminatorStatus.NotSet)
{
break;
}
result.Status = status;
if (((status & MatchTerminatorStatus.NoLength) > 0))
{
result.CanContinue = true;
}
else
{
result.Length++;
slidingWindow.Enqueue(item);
result.CanContinue = sourceEnum.MoveNext();
}
//Check whether we have a termination condition.
if ((result.Status & MatchTerminatorStatus.Success) > 0)
{
result.IsTerminator = mPredicateTerminator(result, slidingWindow, item, length);
}
return(result);
case MatchTerminatorStatus.NotSet:
break;
default:
//This shouldn't happen
break;
}
result.Length++;
}
catch (Exception ex)
{
result.Status = MatchTerminatorStatus.Exception;
}
}while (sourceEnum.MoveNext());
result.CanContinue = false;
return(result);
}
/// <summary>
///
/// </summary>
/// <param name="result"></param>
/// <param name="terminator"></param>
/// <param name="currentItem"></param>
/// <param name="length"></param>
/// <returns></returns>
protected virtual bool ValidateTerminator(MatchTerminatorResult result, Queue <TSource> terminator, TSource currentItem, long length)
{
return(false);
}
/// <summary>
///
/// </summary>
/// <param name="item"></param>
/// <param name="currentResult"></param>
/// <returns></returns>
protected virtual MatchTerminatorStatus Validate(TSource item, MatchTerminatorResult currentResult)
{
throw new NotImplementedException("Validate is not implemented.");
}
/// <summary>
///
/// </summary>
/// <param name="result"></param>
/// <param name="terminator"></param>
/// <param name="currentItem"></param>
/// <param name="length"></param>
/// <returns></returns>
protected override bool ValidateTerminator(MatchTerminatorResult result, Queue <TSource> terminator, TSource currentItem, long length)
{
return(result.Length > 0);
}
