/// <summary>
/// Tries to register the value of the specified type for this <see cref="SridItem"/>. The value must be unique in the register
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="value"></param>
public void SetId <T>(T value)
where T : struct, Enum
{
if (Id <T>().HasValue || !SridRegister.TryRegisterId(this, value))
{
throw new InvalidOperationException();
}
}
/// <summary>
/// Gets the registered value of the specified type for this <see cref="SridItem"/>. Users are generally expected to pass their own enum types.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public T?Id <T>() where T : struct, Enum
{
int n = SridRegister.GetIdType <T>();
object v = (n < _idMap.Count) ? _idMap[n] : null;
if (v is T t)
{
return(t);
}
else
{
return(null);
}
}
