internal static ParsingResult TryParse(string input, out Interval interval)
{
interval = null;
if (string.IsNullOrWhiteSpace(input))
{
return(ParsingResult.EmptyInputString);
}
var match = ParsingUtilities.Match(input, Patterns);
if (match == null)
{
return(ParsingResult.NotMatched);
}
int halfSteps;
if (!ParsingUtilities.ParseInt(match, HalfStepsGroupName, 0, out halfSteps) ||
!IntervalUtilities.IsIntervalValid(halfSteps))
{
return(ParsingResult.Error(HalfStepsNumberIsOutOfRange));
}
interval = Interval.FromHalfSteps(halfSteps);
return(ParsingResult.Parsed);
}
internal static ParsingResult TryParse(string input, out Interval interval)
{
interval = null;
if (string.IsNullOrWhiteSpace(input))
{
return(ParsingResult.EmptyInputString);
}
var match = ParsingUtilities.Match(input, Patterns, ignoreCase: false);
if (match == null)
{
return(ParsingResult.NotMatched);
}
var intervalQualityGroup = match.Groups[IntervalQualityGroupName];
if (!intervalQualityGroup.Success)
{
int halfSteps;
if (!ParsingUtilities.ParseInt(match, HalfStepsGroupName, 0, out halfSteps) ||
!IntervalUtilities.IsIntervalValid(halfSteps))
{
return(ParsingResult.Error(HalfStepsNumberIsOutOfRange));
}
interval = Interval.FromHalfSteps(halfSteps);
return(ParsingResult.Parsed);
}
var intervalQuality = IntervalQualitiesByLetters[intervalQualityGroup.Value];
int intervalNumber;
if (!ParsingUtilities.ParseInt(match, IntervalNumberGroupName, 0, out intervalNumber) || intervalNumber < 1)
{
return(ParsingResult.Error(IntervalNumberIsOutOfRange));
}
interval = Interval.Get(intervalQuality, intervalNumber);
return(ParsingResult.Parsed);
}
