public TeamId(string competitionIdentifier, int teamNumber)
{
if (!CompetitionIdentificationValidator.TryGetTeamIdNumberLength(competitionIdentifier, out digitCount))
{
throw new ArgumentOutOfRangeException(nameof(competitionIdentifier));
}
if (teamNumber <= 0 || teamNumber > CompetitionIdentificationValidator.GetMaximumNumericId(digitCount))
{
throw new ArgumentOutOfRangeException(nameof(teamNumber));
}
CompetitionIdentifier = competitionIdentifier;
TeamNumber = teamNumber;
}
public static bool TryParse(string idString, out TeamId teamId)
{
teamId = default(TeamId);
// length must be at least 3: 1 or more chars competition ID, 1 char '-', 1 or more chars numeric ID
if (idString == null || idString.Length < 3)
{
return(false);
}
var competitionIdBuilder = new System.Text.StringBuilder(idString.Length / 2);
string competitionId = null;
int numericId = 0;
int expectedDigitCt = 0;
int receivedDigitCt = 0;
// parser state
int state = 0;
foreach (char c in idString)
{
switch (state)
{
case 0:
// reading competition ID
if (c != '-')
{
competitionIdBuilder.Append(c);
}
else
{
state = 1;
competitionId = competitionIdBuilder.ToString();
if (!CompetitionIdentificationValidator.TryGetTeamIdNumberLength(competitionId, out expectedDigitCt))
{
return(false);
}
}
break;
case 1:
// reading numeric ID
if ('0' <= c && c <= '9')
{
numericId *= 10;
numericId += c - '0';
receivedDigitCt++;
}
else
{
return(false);
}
break;
}
}
if (state == 0 || receivedDigitCt != expectedDigitCt)
{
return(false);
}
teamId = new TeamId(competitionId, numericId, expectedDigitCt);
return(true);
}
public override string ToString()
{
return(string.Format("{0}-{1}", CompetitionIdentifier, TeamNumber.ToString(CompetitionIdentificationValidator.GetFormatString(digitCount))));
}
