public static bool TryParse(string input, IFormatProvider provider, out IsoDuration result, out string errorMessage)
{
errorMessage = null;
var match = IsoRegex.Match(input);
bool success = match.Success;
if (success)
{
var duration = new IsoDuration();
bool negative = match.Groups[1].Success;
duration.IsNegative = negative;
var parser = new ParseField()
{
IsNegative = negative
};
if (errorMessage == null)
{
parser.TryParse(match.Groups[2].Value, provider, x => { duration.Years = x; }, out errorMessage);
}
if (errorMessage == null)
{
parser.TryParse(match.Groups[3].Value, provider, x => { duration.Months = x; }, out errorMessage);
}
if (errorMessage == null)
{
parser.TryParse(match.Groups[4].Value, provider, x => { duration.Weeks = x; }, out errorMessage);
}
if (errorMessage == null)
{
parser.TryParse(match.Groups[5].Value, provider, x => { duration.Days = x; }, out errorMessage);
}
if (errorMessage == null)
{
parser.TryParse(match.Groups[6].Value, provider, x => { duration.Hours = x; }, out errorMessage);
}
if (errorMessage == null)
{
parser.TryParse(match.Groups[7].Value, provider, x => { duration.Minutes = x; }, out errorMessage);
}
if (errorMessage == null)
{
parser.TryParse(match.Groups[8].Value, provider, x => { duration.Seconds = x; }, out errorMessage);
}
if (errorMessage == null)
{
result = duration;
success = true;
}
else
{
result = default(IsoDuration);
success = false;
}
}
else
{
result = default(IsoDuration);
}
return(success);
}
